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| author | Pedro Alves <palves@redhat.com> | 2018-06-21 17:09:31 +0100 |
|---|---|---|
| committer | Pedro Alves <palves@redhat.com> | 2018-06-21 17:09:31 +0100 |
| commit | 00431a78b28f913a9d5c912c49680e39cfd20847 (patch) | |
| tree | a16c50ee1250317f71ff7e8be9d3275bee7f0ecf | |
| parent | 33bab475a6984afedac8a036b3bb40b5555b4127 (diff) | |
| download | gdb-00431a78b28f913a9d5c912c49680e39cfd20847.zip gdb-00431a78b28f913a9d5c912c49680e39cfd20847.tar.gz gdb-00431a78b28f913a9d5c912c49680e39cfd20847.tar.bz2 | |
Use thread_info and inferior pointers more throughout
This is more preparation bits for multi-target support.
In a multi-target scenario, we need to address the case of different
processes/threads running on different targets that happen to have the
same PID/PTID. E.g., we can have both process 123 in target 1, and
process 123 in target 2, while they're in reality different processes
running on different machines. Or maybe we've loaded multiple
instances of the same core file. Etc.
To address this, in my WIP multi-target branch, threads and processes
are uniquely identified by the (process_stratum target_ops *, ptid_t)
and (process_stratum target_ops *, pid) tuples respectively. I.e.,
each process_stratum instance has its own thread/process number space.
As you can imagine, that requires passing around target_ops * pointers
in a number of functions where we're currently passing only a ptid_t
or an int. E.g., when we look up a thread_info object by ptid_t in
find_thread_ptid, the ptid_t alone isn't sufficient.
In many cases though, we already have the thread_info or inferior
pointer handy, but we "lose" it somewhere along the call stack, only
to look it up again by ptid_t/pid. Since thread_info or inferior
objects know their parent target, if we pass around thread_info or
inferior pointers when possible, we avoid having to add extra
target_ops parameters to many functions, and also, we eliminate a
number of by ptid_t/int lookups.
So that's what this patch does. In a bit more detail:
- Changes a number of functions and methods to take a thread_info or
inferior pointer instead of a ptid_t or int parameter.
- Changes a number of structure fields from ptid_t/int to inferior or
thread_info pointers.
- Uses the inferior_thread() function whenever possible instead of
inferior_ptid.
- Uses thread_info pointers directly when possible instead of the
is_running/is_stopped etc. routines that require a lookup.
- A number of functions are eliminated along the way, such as:
int valid_gdb_inferior_id (int num);
int pid_to_gdb_inferior_id (int pid);
int gdb_inferior_id_to_pid (int num);
int in_inferior_list (int pid);
- A few structures and places hold a thread_info pointer across
inferior execution, so now they take a strong reference to the
(refcounted) thread_info object to avoid the thread_info pointer
getting stale. This is done in enable_thread_stack_temporaries and
in the infcall.c code.
- Related, there's a spot in infcall.c where using a RAII object to
handle the refcount would be handy, so a gdb::ref_ptr specialization
for thread_info is added (thread_info_ref, in gdbthread.h), along
with a gdb_ref_ptr policy that works for all refcounted_object types
(in common/refcounted-object.h).
gdb/ChangeLog:
2018-06-21 Pedro Alves <palves@redhat.com>
* ada-lang.h (ada_get_task_number): Take a thread_info pointer
instead of a ptid_t. All callers adjusted.
* ada-tasks.c (ada_get_task_number): Likewise. All callers
adjusted.
(print_ada_task_info, display_current_task_id, task_command_1):
Adjust.
* breakpoint.c (watchpoint_in_thread_scope): Adjust to use
inferior_thread.
(breakpoint_kind): Adjust.
(remove_breakpoints_pid): Rename to ...
(remove_breakpoints_inf): ... this. Adjust to take an inferior
pointer. All callers adjusted.
(bpstat_clear_actions): Use inferior_thread.
(get_bpstat_thread): New.
(bpstat_do_actions): Use it.
(bpstat_check_breakpoint_conditions, bpstat_stop_status): Adjust
to take a thread_info pointer. All callers adjusted.
(set_longjmp_breakpoint_for_call_dummy, set_momentary_breakpoint)
(breakpoint_re_set_thread): Use inferior_thread.
* breakpoint.h (struct inferior): Forward declare.
(bpstat_stop_status): Update.
(remove_breakpoints_pid): Delete.
(remove_breakpoints_inf): New.
* bsd-uthread.c (bsd_uthread_target::wait)
(bsd_uthread_target::update_thread_list): Use find_thread_ptid.
* btrace.c (btrace_add_pc, btrace_enable, btrace_fetch)
(maint_btrace_packet_history_cmd)
(maint_btrace_clear_packet_history_cmd): Adjust.
(maint_btrace_clear_cmd, maint_info_btrace_cmd): Adjust to use
inferior_thread.
* cli/cli-interp.c: Include "inferior.h".
* common/refcounted-object.h (struct
refcounted_object_ref_policy): New.
* compile/compile-object-load.c: Include gdbthread.h.
(store_regs): Use inferior_thread.
* corelow.c (core_target::close): Use current_inferior.
(core_target_open): Adjust to use first_thread_of_inferior and use
the current inferior.
* ctf.c (ctf_target::close): Adjust to use current_inferior.
* dummy-frame.c (dummy_frame_id) <ptid>: Delete, replaced by ...
<thread>: ... this new field. All references adjusted.
(dummy_frame_pop, dummy_frame_discard, register_dummy_frame_dtor):
Take a thread_info pointer instead of a ptid_t.
* dummy-frame.h (dummy_frame_push, dummy_frame_pop)
(dummy_frame_discard, register_dummy_frame_dtor): Take a
thread_info pointer instead of a ptid_t.
* elfread.c: Include "inferior.h".
(elf_gnu_ifunc_resolver_stop, elf_gnu_ifunc_resolver_return_stop):
Use inferior_thread.
* eval.c (evaluate_subexp): Likewise.
* frame.c (frame_pop, has_stack_frames, find_frame_sal): Use
inferior_thread.
* gdb_proc_service.h (struct thread_info): Forward declare.
(struct ps_prochandle) <ptid>: Delete, replaced by ...
<thread>: ... this new field. All references adjusted.
* gdbarch.h, gdbarch.c: Regenerate.
* gdbarch.sh (get_syscall_number): Replace 'ptid' parameter with a
'thread' parameter. All implementations and callers adjusted.
* gdbthread.h (thread_info) <set_running>: New method.
(delete_thread, delete_thread_silent): Take a thread_info pointer
instead of a ptid.
(global_thread_id_to_ptid, ptid_to_global_thread_id): Delete.
(first_thread_of_process): Delete, replaced by ...
(first_thread_of_inferior): ... this new function. All callers
adjusted.
(any_live_thread_of_process): Delete, replaced by ...
(any_live_thread_of_inferior): ... this new function. All callers
adjusted.
(switch_to_thread, switch_to_no_thread): Declare.
(is_executing): Delete.
(enable_thread_stack_temporaries): Update comment.
<enable_thread_stack_temporaries>: Take a thread_info pointer
instead of a ptid_t. Incref the thread.
<~enable_thread_stack_temporaries>: Decref the thread.
<m_ptid>: Delete
<m_thr>: New.
(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
(get_last_thread_stack_temporary)
(value_in_thread_stack_temporaries, can_access_registers_thread):
Take a thread_info pointer instead of a ptid_t. All callers
adjusted.
* infcall.c (get_call_return_value): Use inferior_thread.
(run_inferior_call): Work with thread pointers instead of ptid_t.
(call_function_by_hand_dummy): Work with thread pointers instead
of ptid_t. Use thread_info_ref.
* infcmd.c (proceed_thread_callback): Access thread's state
directly.
(ensure_valid_thread, ensure_not_running): Use inferior_thread,
access thread's state directly.
(continue_command): Use inferior_thread.
(info_program_command): Use find_thread_ptid and access thread
state directly.
(proceed_after_attach_callback): Use thread state directly.
(notice_new_inferior): Take a thread_info pointer instead of a
ptid_t. All callers adjusted.
(exit_inferior): Take an inferior pointer instead of a pid. All
callers adjusted.
(exit_inferior_silent): New.
(detach_inferior): Delete.
(valid_gdb_inferior_id, pid_to_gdb_inferior_id)
(gdb_inferior_id_to_pid, in_inferior_list): Delete.
(detach_inferior_command, kill_inferior_command): Use
find_inferior_id instead of valid_gdb_inferior_id and
gdb_inferior_id_to_pid.
(inferior_command): Use inferior and thread pointers.
* inferior.h (struct thread_info): Forward declare.
(notice_new_inferior): Take a thread_info pointer instead of a
ptid_t. All callers adjusted.
(detach_inferior): Delete declaration.
(exit_inferior, exit_inferior_silent): Take an inferior pointer
instead of a pid. All callers adjusted.
(gdb_inferior_id_to_pid, pid_to_gdb_inferior_id, in_inferior_list)
(valid_gdb_inferior_id): Delete.
* infrun.c (follow_fork_inferior, proceed_after_vfork_done)
(handle_vfork_child_exec_or_exit, follow_exec): Adjust.
(struct displaced_step_inferior_state) <pid>: Delete, replaced by
...
<inf>: ... this new field.
<step_ptid>: Delete, replaced by ...
<step_thread>: ... this new field.
(get_displaced_stepping_state): Take an inferior pointer instead
of a pid. All callers adjusted.
(displaced_step_in_progress_any_inferior): Adjust.
(displaced_step_in_progress_thread): Take a thread pointer instead
of a ptid_t. All callers adjusted.
(displaced_step_in_progress, add_displaced_stepping_state): Take
an inferior pointer instead of a pid. All callers adjusted.
(get_displaced_step_closure_by_addr): Adjust.
(remove_displaced_stepping_state): Take an inferior pointer
instead of a pid. All callers adjusted.
(displaced_step_prepare_throw, displaced_step_prepare)
(displaced_step_fixup): Take a thread pointer instead of a ptid_t.
All callers adjusted.
(start_step_over): Adjust.
(infrun_thread_ptid_changed): Remove bit updating ptids in the
displaced step queue.
(do_target_resume): Adjust.
(fetch_inferior_event): Use inferior_thread.
(context_switch, get_inferior_stop_soon): Take an
execution_control_state pointer instead of a ptid_t. All callers
adjusted.
(switch_to_thread_cleanup): Delete.
(stop_all_threads): Use scoped_restore_current_thread.
* inline-frame.c: Include "gdbthread.h".
(inline_state) <inline_state>: Take a thread pointer instead of a
ptid_t. All callers adjusted.
<ptid>: Delete, replaced by ...
<thread>: ... this new field.
(find_inline_frame_state): Take a thread pointer instead of a
ptid_t. All callers adjusted.
(skip_inline_frames, step_into_inline_frame)
(inline_skipped_frames, inline_skipped_symbol): Take a thread
pointer instead of a ptid_t. All callers adjusted.
* inline-frame.h (skip_inline_frames, step_into_inline_frame)
(inline_skipped_frames, inline_skipped_symbol): Likewise.
* linux-fork.c (delete_checkpoint_command): Adjust to use thread
pointers directly.
* linux-nat.c (get_detach_signal): Likewise.
* linux-thread-db.c (thread_from_lwp): New 'stopped' parameter.
(thread_db_notice_clone): Adjust.
(thread_db_find_new_threads_silently)
(thread_db_find_new_threads_2, thread_db_find_new_threads_1): Take
a thread pointer instead of a ptid_t. All callers adjusted.
* mi/mi-cmd-var.c: Include "inferior.h".
(mi_cmd_var_update_iter): Update to use thread pointers.
* mi/mi-interp.c (mi_new_thread): Update to use the thread's
inferior directly.
(mi_output_running_pid, mi_inferior_count): Delete, bits factored
out to ...
(mi_output_running): ... this new function.
(mi_on_resume_1): Adjust to use it.
(mi_user_selected_context_changed): Adjust to use inferior_thread.
* mi/mi-main.c (proceed_thread): Adjust to use thread pointers
directly.
(interrupt_thread_callback): : Adjust to use thread and inferior
pointers.
* proc-service.c: Include "gdbthread.h".
(ps_pglobal_lookup): Adjust to use the thread's inferior directly.
* progspace-and-thread.c: Include "inferior.h".
* progspace.c: Include "inferior.h".
* python/py-exitedevent.c (create_exited_event_object): Adjust to
hold a reference to an inferior_object.
* python/py-finishbreakpoint.c (bpfinishpy_init): Adjust to use
inferior_thread.
* python/py-inferior.c (struct inferior_object): Give the type a
tag name instead of a typedef.
(python_on_normal_stop): No need to check if the current thread is
listed.
(inferior_to_inferior_object): Change return type to
inferior_object. All callers adjusted.
(find_thread_object): Delete, bits factored out to ...
(thread_to_thread_object): ... this new function.
* python/py-infthread.c (create_thread_object): Use
inferior_to_inferior_object.
(thpy_is_stopped): Use thread pointer directly.
(gdbpy_selected_thread): Use inferior_thread.
* python/py-record-btrace.c (btpy_list_object) <ptid>: Delete
field, replaced with ...
<thread>: ... this new field. All users adjusted.
(btpy_insn_or_gap_new): Drop const.
(btpy_list_new): Take a thread pointer instead of a ptid_t. All
callers adjusted.
* python/py-record.c: Include "gdbthread.h".
(recpy_insn_new, recpy_func_new): Take a thread pointer instead of
a ptid_t. All callers adjusted.
(gdbpy_current_recording): Use inferior_thread.
* python/py-record.h (recpy_record_object) <ptid>: Delete
field, replaced with ...
<thread>: ... this new field. All users adjusted.
(recpy_element_object) <ptid>: Delete
field, replaced with ...
<thread>: ... this new field. All users adjusted.
(recpy_insn_new, recpy_func_new): Take a thread pointer instead of
a ptid_t. All callers adjusted.
* python/py-threadevent.c: Include "gdbthread.h".
(get_event_thread): Use thread_to_thread_object.
* python/python-internal.h (struct inferior_object): Forward
declare.
(find_thread_object, find_inferior_object): Delete declarations.
(thread_to_thread_object, inferior_to_inferior_object): New
declarations.
* record-btrace.c: Include "inferior.h".
(require_btrace_thread): Use inferior_thread.
(record_btrace_frame_sniffer)
(record_btrace_tailcall_frame_sniffer): Use inferior_thread.
(get_thread_current_frame): Use scoped_restore_current_thread and
switch_to_thread.
(get_thread_current_frame): Use thread pointer directly.
(record_btrace_replay_at_breakpoint): Use thread's inferior
pointer directly.
* record-full.c: Include "inferior.h".
* regcache.c: Include "gdbthread.h".
(get_thread_arch_regcache): Use the inferior's address space
directly.
(get_thread_regcache, registers_changed_thread): New.
* regcache.h (get_thread_regcache(thread_info *thread)): New
overload.
(registers_changed_thread): New.
(remote_target) <remote_detach_1>: Swap order of parameters.
(remote_add_thread): <remote_add_thread>: Return the new thread.
(get_remote_thread_info(ptid_t)): New overload.
(remote_target::remote_notice_new_inferior): Use thread pointers
directly.
(remote_target::process_initial_stop_replies): Use
thread_info::set_running.
(remote_target::remote_detach_1, remote_target::detach)
(extended_remote_target::detach): Adjust.
* stack.c (frame_show_address): Use inferior_thread.
* target-debug.h (target_debug_print_thread_info_pp): New.
* target-delegates.c: Regenerate.
* target.c (default_thread_address_space): Delete.
(memory_xfer_partial_1): Use current_inferior.
(target_detach): Use current_inferior.
(target_thread_address_space): Delete.
(generic_mourn_inferior): Use current_inferior.
* target.h (struct target_ops) <thread_address_space>: Delete.
(target_thread_address_space): Delete.
* thread.c (init_thread_list): Use ALL_THREADS_SAFE. Use thread
pointers directly.
(delete_thread_1, delete_thread, delete_thread_silent): Take a
thread pointer instead of a ptid_t. Adjust all callers.
(ptid_to_global_thread_id, global_thread_id_to_ptid): Delete.
(first_thread_of_process): Delete, replaced by ...
(first_thread_of_inferior): ... this new function. All callers
adjusted.
(any_thread_of_process): Rename to ...
(any_thread_of_inferior): ... this, and take an inferior pointer.
(any_live_thread_of_process): Rename to ...
(any_live_thread_of_inferior): ... this, and take an inferior
pointer.
(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
(value_in_thread_stack_temporaries)
(get_last_thread_stack_temporary): Take a thread pointer instead
of a ptid_t. Adjust all callers.
(thread_info::set_running): New.
(validate_registers_access): Use inferior_thread.
(can_access_registers_ptid): Rename to ...
(can_access_registers_thread): ... this, and take a thread
pointer.
(print_thread_info_1): Adjust to compare thread pointers instead
of ptids.
(switch_to_no_thread, switch_to_thread): Make extern.
(scoped_restore_current_thread::~scoped_restore_current_thread):
Use m_thread pointer directly.
(scoped_restore_current_thread::scoped_restore_current_thread):
Use inferior_thread.
(thread_command): Use thread pointer directly.
(thread_num_make_value_helper): Use inferior_thread.
* top.c (execute_command): Use inferior_thread.
* tui/tui-interp.c: Include "inferior.h".
* varobj.c (varobj_create): Use inferior_thread.
(value_of_root_1): Use find_thread_global_id instead of
global_thread_id_to_ptid.
71 files changed, 1198 insertions, 993 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 6345d85..1221a54 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,299 @@ +2018-06-21 Pedro Alves <palves@redhat.com> + + * ada-lang.h (ada_get_task_number): Take a thread_info pointer + instead of a ptid_t. All callers adjusted. + * ada-tasks.c (ada_get_task_number): Likewise. All callers + adjusted. + (print_ada_task_info, display_current_task_id, task_command_1): + Adjust. + * breakpoint.c (watchpoint_in_thread_scope): Adjust to use + inferior_thread. + (breakpoint_kind): Adjust. + (remove_breakpoints_pid): Rename to ... + (remove_breakpoints_inf): ... this. Adjust to take an inferior + pointer. All callers adjusted. + (bpstat_clear_actions): Use inferior_thread. + (get_bpstat_thread): New. + (bpstat_do_actions): Use it. + (bpstat_check_breakpoint_conditions, bpstat_stop_status): Adjust + to take a thread_info pointer. All callers adjusted. + (set_longjmp_breakpoint_for_call_dummy, set_momentary_breakpoint) + (breakpoint_re_set_thread): Use inferior_thread. + * breakpoint.h (struct inferior): Forward declare. + (bpstat_stop_status): Update. + (remove_breakpoints_pid): Delete. + (remove_breakpoints_inf): New. + * bsd-uthread.c (bsd_uthread_target::wait) + (bsd_uthread_target::update_thread_list): Use find_thread_ptid. + * btrace.c (btrace_add_pc, btrace_enable, btrace_fetch) + (maint_btrace_packet_history_cmd) + (maint_btrace_clear_packet_history_cmd): Adjust. + (maint_btrace_clear_cmd, maint_info_btrace_cmd): Adjust to use + inferior_thread. + * cli/cli-interp.c: Include "inferior.h". + * common/refcounted-object.h (struct + refcounted_object_ref_policy): New. + * compile/compile-object-load.c: Include gdbthread.h. + (store_regs): Use inferior_thread. + * corelow.c (core_target::close): Use current_inferior. + (core_target_open): Adjust to use first_thread_of_inferior and use + the current inferior. + * ctf.c (ctf_target::close): Adjust to use current_inferior. + * dummy-frame.c (dummy_frame_id) <ptid>: Delete, replaced by ... + <thread>: ... this new field. All references adjusted. + (dummy_frame_pop, dummy_frame_discard, register_dummy_frame_dtor): + Take a thread_info pointer instead of a ptid_t. + * dummy-frame.h (dummy_frame_push, dummy_frame_pop) + (dummy_frame_discard, register_dummy_frame_dtor): Take a + thread_info pointer instead of a ptid_t. + * elfread.c: Include "inferior.h". + (elf_gnu_ifunc_resolver_stop, elf_gnu_ifunc_resolver_return_stop): + Use inferior_thread. + * eval.c (evaluate_subexp): Likewise. + * frame.c (frame_pop, has_stack_frames, find_frame_sal): Use + inferior_thread. + * gdb_proc_service.h (struct thread_info): Forward declare. + (struct ps_prochandle) <ptid>: Delete, replaced by ... + <thread>: ... this new field. All references adjusted. + * gdbarch.h, gdbarch.c: Regenerate. + * gdbarch.sh (get_syscall_number): Replace 'ptid' parameter with a + 'thread' parameter. All implementations and callers adjusted. + * gdbthread.h (thread_info) <set_running>: New method. + (delete_thread, delete_thread_silent): Take a thread_info pointer + instead of a ptid. + (global_thread_id_to_ptid, ptid_to_global_thread_id): Delete. + (first_thread_of_process): Delete, replaced by ... + (first_thread_of_inferior): ... this new function. All callers + adjusted. + (any_live_thread_of_process): Delete, replaced by ... + (any_live_thread_of_inferior): ... this new function. All callers + adjusted. + (switch_to_thread, switch_to_no_thread): Declare. + (is_executing): Delete. + (enable_thread_stack_temporaries): Update comment. + <enable_thread_stack_temporaries>: Take a thread_info pointer + instead of a ptid_t. Incref the thread. + <~enable_thread_stack_temporaries>: Decref the thread. + <m_ptid>: Delete + <m_thr>: New. + (thread_stack_temporaries_enabled_p, push_thread_stack_temporary) + (get_last_thread_stack_temporary) + (value_in_thread_stack_temporaries, can_access_registers_thread): + Take a thread_info pointer instead of a ptid_t. All callers + adjusted. + * infcall.c (get_call_return_value): Use inferior_thread. + (run_inferior_call): Work with thread pointers instead of ptid_t. + (call_function_by_hand_dummy): Work with thread pointers instead + of ptid_t. Use thread_info_ref. + * infcmd.c (proceed_thread_callback): Access thread's state + directly. + (ensure_valid_thread, ensure_not_running): Use inferior_thread, + access thread's state directly. + (continue_command): Use inferior_thread. + (info_program_command): Use find_thread_ptid and access thread + state directly. + (proceed_after_attach_callback): Use thread state directly. + (notice_new_inferior): Take a thread_info pointer instead of a + ptid_t. All callers adjusted. + (exit_inferior): Take an inferior pointer instead of a pid. All + callers adjusted. + (exit_inferior_silent): New. + (detach_inferior): Delete. + (valid_gdb_inferior_id, pid_to_gdb_inferior_id) + (gdb_inferior_id_to_pid, in_inferior_list): Delete. + (detach_inferior_command, kill_inferior_command): Use + find_inferior_id instead of valid_gdb_inferior_id and + gdb_inferior_id_to_pid. + (inferior_command): Use inferior and thread pointers. + * inferior.h (struct thread_info): Forward declare. + (notice_new_inferior): Take a thread_info pointer instead of a + ptid_t. All callers adjusted. + (detach_inferior): Delete declaration. + (exit_inferior, exit_inferior_silent): Take an inferior pointer + instead of a pid. All callers adjusted. + (gdb_inferior_id_to_pid, pid_to_gdb_inferior_id, in_inferior_list) + (valid_gdb_inferior_id): Delete. + * infrun.c (follow_fork_inferior, proceed_after_vfork_done) + (handle_vfork_child_exec_or_exit, follow_exec): Adjust. + (struct displaced_step_inferior_state) <pid>: Delete, replaced by + ... + <inf>: ... this new field. + <step_ptid>: Delete, replaced by ... + <step_thread>: ... this new field. + (get_displaced_stepping_state): Take an inferior pointer instead + of a pid. All callers adjusted. + (displaced_step_in_progress_any_inferior): Adjust. + (displaced_step_in_progress_thread): Take a thread pointer instead + of a ptid_t. All callers adjusted. + (displaced_step_in_progress, add_displaced_stepping_state): Take + an inferior pointer instead of a pid. All callers adjusted. + (get_displaced_step_closure_by_addr): Adjust. + (remove_displaced_stepping_state): Take an inferior pointer + instead of a pid. All callers adjusted. + (displaced_step_prepare_throw, displaced_step_prepare) + (displaced_step_fixup): Take a thread pointer instead of a ptid_t. + All callers adjusted. + (start_step_over): Adjust. + (infrun_thread_ptid_changed): Remove bit updating ptids in the + displaced step queue. + (do_target_resume): Adjust. + (fetch_inferior_event): Use inferior_thread. + (context_switch, get_inferior_stop_soon): Take an + execution_control_state pointer instead of a ptid_t. All callers + adjusted. + (switch_to_thread_cleanup): Delete. + (stop_all_threads): Use scoped_restore_current_thread. + * inline-frame.c: Include "gdbthread.h". + (inline_state) <inline_state>: Take a thread pointer instead of a + ptid_t. All callers adjusted. + <ptid>: Delete, replaced by ... + <thread>: ... this new field. + (find_inline_frame_state): Take a thread pointer instead of a + ptid_t. All callers adjusted. + (skip_inline_frames, step_into_inline_frame) + (inline_skipped_frames, inline_skipped_symbol): Take a thread + pointer instead of a ptid_t. All callers adjusted. + * inline-frame.h (skip_inline_frames, step_into_inline_frame) + (inline_skipped_frames, inline_skipped_symbol): Likewise. + * linux-fork.c (delete_checkpoint_command): Adjust to use thread + pointers directly. + * linux-nat.c (get_detach_signal): Likewise. + * linux-thread-db.c (thread_from_lwp): New 'stopped' parameter. + (thread_db_notice_clone): Adjust. + (thread_db_find_new_threads_silently) + (thread_db_find_new_threads_2, thread_db_find_new_threads_1): Take + a thread pointer instead of a ptid_t. All callers adjusted. + * mi/mi-cmd-var.c: Include "inferior.h". + (mi_cmd_var_update_iter): Update to use thread pointers. + * mi/mi-interp.c (mi_new_thread): Update to use the thread's + inferior directly. + (mi_output_running_pid, mi_inferior_count): Delete, bits factored + out to ... + (mi_output_running): ... this new function. + (mi_on_resume_1): Adjust to use it. + (mi_user_selected_context_changed): Adjust to use inferior_thread. + * mi/mi-main.c (proceed_thread): Adjust to use thread pointers + directly. + (interrupt_thread_callback): : Adjust to use thread and inferior + pointers. + * proc-service.c: Include "gdbthread.h". + (ps_pglobal_lookup): Adjust to use the thread's inferior directly. + * progspace-and-thread.c: Include "inferior.h". + * progspace.c: Include "inferior.h". + * python/py-exitedevent.c (create_exited_event_object): Adjust to + hold a reference to an inferior_object. + * python/py-finishbreakpoint.c (bpfinishpy_init): Adjust to use + inferior_thread. + * python/py-inferior.c (struct inferior_object): Give the type a + tag name instead of a typedef. + (python_on_normal_stop): No need to check if the current thread is + listed. + (inferior_to_inferior_object): Change return type to + inferior_object. All callers adjusted. + (find_thread_object): Delete, bits factored out to ... + (thread_to_thread_object): ... this new function. + * python/py-infthread.c (create_thread_object): Use + inferior_to_inferior_object. + (thpy_is_stopped): Use thread pointer directly. + (gdbpy_selected_thread): Use inferior_thread. + * python/py-record-btrace.c (btpy_list_object) <ptid>: Delete + field, replaced with ... + <thread>: ... this new field. All users adjusted. + (btpy_insn_or_gap_new): Drop const. + (btpy_list_new): Take a thread pointer instead of a ptid_t. All + callers adjusted. + * python/py-record.c: Include "gdbthread.h". + (recpy_insn_new, recpy_func_new): Take a thread pointer instead of + a ptid_t. All callers adjusted. + (gdbpy_current_recording): Use inferior_thread. + * python/py-record.h (recpy_record_object) <ptid>: Delete + field, replaced with ... + <thread>: ... this new field. All users adjusted. + (recpy_element_object) <ptid>: Delete + field, replaced with ... + <thread>: ... this new field. All users adjusted. + (recpy_insn_new, recpy_func_new): Take a thread pointer instead of + a ptid_t. All callers adjusted. + * python/py-threadevent.c: Include "gdbthread.h". + (get_event_thread): Use thread_to_thread_object. + * python/python-internal.h (struct inferior_object): Forward + declare. + (find_thread_object, find_inferior_object): Delete declarations. + (thread_to_thread_object, inferior_to_inferior_object): New + declarations. + * record-btrace.c: Include "inferior.h". + (require_btrace_thread): Use inferior_thread. + (record_btrace_frame_sniffer) + (record_btrace_tailcall_frame_sniffer): Use inferior_thread. + (get_thread_current_frame): Use scoped_restore_current_thread and + switch_to_thread. + (get_thread_current_frame): Use thread pointer directly. + (record_btrace_replay_at_breakpoint): Use thread's inferior + pointer directly. + * record-full.c: Include "inferior.h". + * regcache.c: Include "gdbthread.h". + (get_thread_arch_regcache): Use the inferior's address space + directly. + (get_thread_regcache, registers_changed_thread): New. + * regcache.h (get_thread_regcache(thread_info *thread)): New + overload. + (registers_changed_thread): New. + (remote_target) <remote_detach_1>: Swap order of parameters. + (remote_add_thread): <remote_add_thread>: Return the new thread. + (get_remote_thread_info(ptid_t)): New overload. + (remote_target::remote_notice_new_inferior): Use thread pointers + directly. + (remote_target::process_initial_stop_replies): Use + thread_info::set_running. + (remote_target::remote_detach_1, remote_target::detach) + (extended_remote_target::detach): Adjust. + * stack.c (frame_show_address): Use inferior_thread. + * target-debug.h (target_debug_print_thread_info_pp): New. + * target-delegates.c: Regenerate. + * target.c (default_thread_address_space): Delete. + (memory_xfer_partial_1): Use current_inferior. + (target_detach): Use current_inferior. + (target_thread_address_space): Delete. + (generic_mourn_inferior): Use current_inferior. + * target.h (struct target_ops) <thread_address_space>: Delete. + (target_thread_address_space): Delete. + * thread.c (init_thread_list): Use ALL_THREADS_SAFE. Use thread + pointers directly. + (delete_thread_1, delete_thread, delete_thread_silent): Take a + thread pointer instead of a ptid_t. Adjust all callers. + (ptid_to_global_thread_id, global_thread_id_to_ptid): Delete. + (first_thread_of_process): Delete, replaced by ... + (first_thread_of_inferior): ... this new function. All callers + adjusted. + (any_thread_of_process): Rename to ... + (any_thread_of_inferior): ... this, and take an inferior pointer. + (any_live_thread_of_process): Rename to ... + (any_live_thread_of_inferior): ... this, and take an inferior + pointer. + (thread_stack_temporaries_enabled_p, push_thread_stack_temporary) + (value_in_thread_stack_temporaries) + (get_last_thread_stack_temporary): Take a thread pointer instead + of a ptid_t. Adjust all callers. + (thread_info::set_running): New. + (validate_registers_access): Use inferior_thread. + (can_access_registers_ptid): Rename to ... + (can_access_registers_thread): ... this, and take a thread + pointer. + (print_thread_info_1): Adjust to compare thread pointers instead + of ptids. + (switch_to_no_thread, switch_to_thread): Make extern. + (scoped_restore_current_thread::~scoped_restore_current_thread): + Use m_thread pointer directly. + (scoped_restore_current_thread::scoped_restore_current_thread): + Use inferior_thread. + (thread_command): Use thread pointer directly. + (thread_num_make_value_helper): Use inferior_thread. + * top.c (execute_command): Use inferior_thread. + * tui/tui-interp.c: Include "inferior.h". + * varobj.c (varobj_create): Use inferior_thread. + (value_of_root_1): Use find_thread_global_id instead of + global_thread_id_to_ptid. + 2018-06-21 Alan Hayward <alan.hayward@arm.com> * regcache.c (readable_regcache::read_part): Avoid memcpy when diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c index 96dc8a1..93b6d41 100644 --- a/gdb/aarch64-linux-tdep.c +++ b/gdb/aarch64-linux-tdep.c @@ -366,9 +366,9 @@ aarch64_stap_parse_special_token (struct gdbarch *gdbarch, static LONGEST aarch64_linux_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) + thread_info *thread) { - struct regcache *regs = get_thread_regcache (ptid); + struct regcache *regs = get_thread_regcache (thread); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); /* The content of register x8. */ diff --git a/gdb/ada-lang.h b/gdb/ada-lang.h index 9dcc5de..90bfa0a 100644 --- a/gdb/ada-lang.h +++ b/gdb/ada-lang.h @@ -401,7 +401,7 @@ extern int valid_task_id (int); extern struct ada_task_info *ada_get_task_info_from_ptid (ptid_t ptid); -extern int ada_get_task_number (ptid_t); +extern int ada_get_task_number (thread_info *thread); typedef void (ada_task_list_iterator_ftype) (struct ada_task_info *task); extern void iterate_over_live_ada_tasks diff --git a/gdb/ada-tasks.c b/gdb/ada-tasks.c index bbc0375..7e57d24 100644 --- a/gdb/ada-tasks.c +++ b/gdb/ada-tasks.c @@ -288,14 +288,14 @@ get_ada_tasks_inferior_data (struct inferior *inf) return data; } -/* Return the task number of the task whose ptid is PTID, or zero +/* Return the task number of the task whose thread is THREAD, or zero if the task could not be found. */ int -ada_get_task_number (ptid_t ptid) +ada_get_task_number (thread_info *thread) { int i; - struct inferior *inf = find_inferior_ptid (ptid); + struct inferior *inf = thread->inf; struct ada_tasks_inferior_data *data; gdb_assert (inf != NULL); @@ -303,7 +303,7 @@ ada_get_task_number (ptid_t ptid) for (i = 0; i < VEC_length (ada_task_info_s, data->task_list); i++) if (ptid_equal (VEC_index (ada_task_info_s, data->task_list, i)->ptid, - ptid)) + thread->ptid)) return i + 1; return 0; /* No matching task found. */ @@ -1125,10 +1125,10 @@ print_ada_task_info (struct ui_out *uiout, /* Print the associated Thread ID. */ if (uiout->is_mi_like_p ()) { - const int thread_id = ptid_to_global_thread_id (task_info->ptid); + thread_info *thread = find_thread_ptid (task_info->ptid); - if (thread_id != 0) - uiout->field_int ("thread-id", thread_id); + if (thread != NULL) + uiout->field_int ("thread-id", thread->global_num); else /* This should never happen unless there is a bug somewhere, but be resilient when that happens. */ @@ -1284,7 +1284,7 @@ info_tasks_command (const char *arg, int from_tty) static void display_current_task_id (void) { - const int current_task = ada_get_task_number (inferior_ptid); + const int current_task = ada_get_task_number (inferior_thread ()); if (current_task == 0) printf_filtered (_("[Current task is unknown]\n")); @@ -1327,12 +1327,13 @@ task_command_1 (const char *taskno_str, int from_tty, struct inferior *inf) computed if target_get_ada_task_ptid has not been implemented for our target (yet). Rather than cause an assertion error in that case, it's nicer for the user to just refuse to perform the task switch. */ - if (!find_thread_ptid (task_info->ptid)) + thread_info *tp = find_thread_ptid (task_info->ptid); + if (tp == NULL) error (_("Unable to compute thread ID for task %d.\n" "Cannot switch to this task."), taskno); - switch_to_thread (task_info->ptid); + switch_to_thread (tp); ada_find_printable_frame (get_selected_frame (NULL)); printf_filtered (_("[Switching to task %d]\n"), taskno); print_stack_frame (get_selected_frame (NULL), diff --git a/gdb/amd64-linux-tdep.c b/gdb/amd64-linux-tdep.c index 521e32a..ef9248d 100644 --- a/gdb/amd64-linux-tdep.c +++ b/gdb/amd64-linux-tdep.c @@ -222,9 +222,9 @@ amd64_linux_sigcontext_addr (struct frame_info *this_frame) static LONGEST amd64_linux_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) + thread_info *thread) { - struct regcache *regcache = get_thread_regcache (ptid); + struct regcache *regcache = get_thread_regcache (thread); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); /* The content of a register. */ gdb_byte buf[8]; diff --git a/gdb/arm-linux-tdep.c b/gdb/arm-linux-tdep.c index eb4e206..264e8ca 100644 --- a/gdb/arm-linux-tdep.c +++ b/gdb/arm-linux-tdep.c @@ -819,9 +819,9 @@ arm_linux_sigreturn_next_pc (struct regcache *regcache, static LONGEST arm_linux_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) + thread_info *thread) { - struct regcache *regs = get_thread_regcache (ptid); + struct regcache *regs = get_thread_regcache (thread); ULONGEST pc; ULONGEST cpsr; diff --git a/gdb/bfin-linux-tdep.c b/gdb/bfin-linux-tdep.c index f84e2e0..e3bbb0f 100644 --- a/gdb/bfin-linux-tdep.c +++ b/gdb/bfin-linux-tdep.c @@ -128,9 +128,9 @@ static const struct tramp_frame bfin_linux_sigframe = static LONGEST bfin_linux_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) + thread_info *thread) { - struct regcache *regcache = get_thread_regcache (ptid); + struct regcache *regcache = get_thread_regcache (thread); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); /* The content of a register. */ gdb_byte buf[4]; diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c index f20bc50..80df193 100644 --- a/gdb/breakpoint.c +++ b/gdb/breakpoint.c @@ -1548,7 +1548,7 @@ watchpoint_in_thread_scope (struct watchpoint *b) return (b->pspace == current_program_space && (ptid_equal (b->watchpoint_thread, null_ptid) || (ptid_equal (inferior_ptid, b->watchpoint_thread) - && !is_executing (inferior_ptid)))); + && !inferior_thread ()->executing))); } /* Set watchpoint B to disp_del_at_next_stop, even including its possible @@ -2408,7 +2408,7 @@ breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) struct thread_info *thr = find_thread_global_id (bl->owner->thread); struct regcache *regcache; - regcache = get_thread_regcache (thr->ptid); + regcache = get_thread_regcache (thr); return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, regcache, addr); @@ -3061,14 +3061,13 @@ Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\ } } -/* Remove breakpoints of process PID. */ +/* Remove breakpoints of inferior INF. */ int -remove_breakpoints_pid (int pid) +remove_breakpoints_inf (inferior *inf) { struct bp_location *bl, **blp_tmp; int val; - struct inferior *inf = find_inferior_pid (pid); ALL_BP_LOCATIONS (bl, blp_tmp) { @@ -4329,16 +4328,12 @@ bpstat_num (bpstat *bsp, int *num) void bpstat_clear_actions (void) { - struct thread_info *tp; bpstat bs; - if (ptid_equal (inferior_ptid, null_ptid)) - return; - - tp = find_thread_ptid (inferior_ptid); - if (tp == NULL) + if (inferior_ptid == null_ptid) return; + thread_info *tp = inferior_thread (); for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) { bs->commands = NULL; @@ -4466,22 +4461,37 @@ bpstat_do_actions_1 (bpstat *bsp) return again; } +/* Helper for bpstat_do_actions. Get the current thread, if there's + one, is alive and has execution. Return NULL otherwise. */ + +static thread_info * +get_bpstat_thread () +{ + if (inferior_ptid == null_ptid || !target_has_execution) + return NULL; + + thread_info *tp = inferior_thread (); + if (tp->state == THREAD_EXITED || tp->executing) + return NULL; + return tp; +} + void bpstat_do_actions (void) { struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); + thread_info *tp; /* Do any commands attached to breakpoint we are stopped at. */ - while (!ptid_equal (inferior_ptid, null_ptid) - && target_has_execution - && !is_exited (inferior_ptid) - && !is_executing (inferior_ptid)) - /* Since in sync mode, bpstat_do_actions may resume the inferior, - and only return when it is stopped at the next breakpoint, we - keep doing breakpoint actions until it returns false to - indicate the inferior was not resumed. */ - if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) - break; + while ((tp = get_bpstat_thread ()) != NULL) + { + /* Since in sync mode, bpstat_do_actions may resume the + inferior, and only return when it is stopped at the next + breakpoint, we keep doing breakpoint actions until it returns + false to indicate the inferior was not resumed. */ + if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) + break; + } discard_cleanups (cleanup_if_error); } @@ -5154,7 +5164,7 @@ bpstat_check_watchpoint (bpstat bs) breakpoint, set BS->stop to 0. */ static void -bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) +bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) { const struct bp_location *bl; struct breakpoint *b; @@ -5184,9 +5194,8 @@ bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) /* If this is a thread/task-specific breakpoint, don't waste cpu evaluating the condition if this isn't the specified thread/task. */ - if ((b->thread != -1 && b->thread != ptid_to_global_thread_id (ptid)) - || (b->task != 0 && b->task != ada_get_task_number (ptid))) - + if ((b->thread != -1 && b->thread != thread->global_num) + || (b->task != 0 && b->task != ada_get_task_number (thread))) { bs->stop = 0; return; @@ -5387,7 +5396,7 @@ build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, bpstat bpstat_stop_status (const address_space *aspace, - CORE_ADDR bp_addr, ptid_t ptid, + CORE_ADDR bp_addr, thread_info *thread, const struct target_waitstatus *ws, bpstat stop_chain) { @@ -5435,7 +5444,7 @@ bpstat_stop_status (const address_space *aspace, b->ops->check_status (bs); if (bs->stop) { - bpstat_check_breakpoint_conditions (bs, ptid); + bpstat_check_breakpoint_conditions (bs, thread); if (bs->stop) { @@ -7316,7 +7325,7 @@ set_longjmp_breakpoint_for_call_dummy (void) new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, &momentary_breakpoint_ops, 1); - new_b->thread = ptid_to_global_thread_id (inferior_ptid); + new_b->thread = inferior_thread ()->global_num; /* Link NEW_B into the chain of RETVAL breakpoints. */ @@ -7356,7 +7365,7 @@ check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) || frame_find_by_id (dummy_b->frame_id) != NULL) continue; - dummy_frame_discard (dummy_b->frame_id, tp->ptid); + dummy_frame_discard (dummy_b->frame_id, tp); while (b->related_breakpoint != b) { @@ -8497,11 +8506,7 @@ set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, b->disposition = disp_donttouch; b->frame_id = frame_id; - /* If we're debugging a multi-threaded program, then we want - momentary breakpoints to be active in only a single thread of - control. */ - if (in_thread_list (inferior_ptid)) - b->thread = ptid_to_global_thread_id (inferior_ptid); + b->thread = inferior_thread ()->global_num; update_global_location_list_nothrow (UGLL_MAY_INSERT); @@ -13923,8 +13928,7 @@ breakpoint_re_set_thread (struct breakpoint *b) { if (b->thread != -1) { - if (in_thread_list (inferior_ptid)) - b->thread = ptid_to_global_thread_id (inferior_ptid); + b->thread = inferior_thread ()->global_num; /* We're being called after following a fork. The new fork is selected as current, and unless this was a vfork will have a diff --git a/gdb/breakpoint.h b/gdb/breakpoint.h index 4223158..3f75aa4 100644 --- a/gdb/breakpoint.h +++ b/gdb/breakpoint.h @@ -40,6 +40,7 @@ struct bpstats; struct bp_location; struct linespec_result; struct linespec_sals; +struct inferior; /* Why are we removing the breakpoint from the target? */ @@ -948,7 +949,7 @@ extern bpstat build_bpstat_chain (const address_space *aspace, commands, FIXME??? fields. */ extern bpstat bpstat_stop_status (const address_space *aspace, - CORE_ADDR pc, ptid_t ptid, + CORE_ADDR pc, thread_info *thread, const struct target_waitstatus *ws, bpstat stop_chain = NULL); @@ -1396,7 +1397,7 @@ extern void insert_breakpoints (void); extern int remove_breakpoints (void); -extern int remove_breakpoints_pid (int pid); +extern int remove_breakpoints_inf (inferior *inf); /* This function can be used to update the breakpoint package's state after an exec() system call has been executed. diff --git a/gdb/bsd-uthread.c b/gdb/bsd-uthread.c index ee2e5ad..6ae673f 100644 --- a/gdb/bsd-uthread.c +++ b/gdb/bsd-uthread.c @@ -419,7 +419,8 @@ bsd_uthread_target::wait (ptid_t ptid, struct target_waitstatus *status, thread_change_ptid (inferior_ptid, ptid); /* Don't let the core see a ptid without a corresponding thread. */ - if (!in_thread_list (ptid) || is_exited (ptid)) + thread_info *thread = find_thread_ptid (ptid); + if (thread == NULL || thread->state == THREAD_EXITED) add_thread (ptid); return ptid; @@ -467,7 +468,8 @@ bsd_uthread_target::update_thread_list () { ptid_t ptid = ptid_build (pid, 0, addr); - if (!in_thread_list (ptid) || is_exited (ptid)) + thread_info *thread = find_thread_ptid (ptid); + if (thread == nullptr || thread->state == THREAD_EXITED) { /* If INFERIOR_PTID doesn't have a tid member yet, then ptid is still the initial thread of the process. Notify GDB diff --git a/gdb/btrace.c b/gdb/btrace.c index b8894a2..35dc90e 100644 --- a/gdb/btrace.c +++ b/gdb/btrace.c @@ -1567,7 +1567,7 @@ btrace_add_pc (struct thread_info *tp) struct regcache *regcache; CORE_ADDR pc; - regcache = get_thread_regcache (tp->ptid); + regcache = get_thread_regcache (tp); pc = regcache_read_pc (regcache); btrace.format = BTRACE_FORMAT_BTS; @@ -1615,7 +1615,7 @@ btrace_enable (struct thread_info *tp, const struct btrace_config *conf) This is not relevant for BTRACE_FORMAT_PT since the trace will already start at the PC at which tracing was enabled. */ if (conf->format != BTRACE_FORMAT_PT - && can_access_registers_ptid (tp->ptid)) + && can_access_registers_thread (tp)) btrace_add_pc (tp); } CATCH (exception, RETURN_MASK_ALL) @@ -1911,7 +1911,7 @@ btrace_fetch (struct thread_info *tp, const struct btrace_cpu *cpu) inferior_ptid = tp->ptid; /* We should not be called on running or exited threads. */ - gdb_assert (can_access_registers_ptid (tp->ptid)); + gdb_assert (can_access_registers_thread (tp)); /* Let's first try to extend the trace we already have. */ if (!btinfo->functions.empty ()) @@ -3231,10 +3231,9 @@ static void maint_btrace_packet_history_cmd (const char *arg, int from_tty) { struct btrace_thread_info *btinfo; - struct thread_info *tp; unsigned int size, begin, end, from, to; - tp = find_thread_ptid (inferior_ptid); + thread_info *tp = find_thread_ptid (inferior_ptid); if (tp == NULL) error (_("No thread.")); @@ -3335,17 +3334,14 @@ maint_btrace_packet_history_cmd (const char *arg, int from_tty) static void maint_btrace_clear_packet_history_cmd (const char *args, int from_tty) { - struct btrace_thread_info *btinfo; - struct thread_info *tp; - if (args != NULL && *args != 0) error (_("Invalid argument.")); - tp = find_thread_ptid (inferior_ptid); - if (tp == NULL) + if (inferior_ptid == null_ptid) error (_("No thread.")); - btinfo = &tp->btrace; + thread_info *tp = inferior_thread (); + btrace_thread_info *btinfo = &tp->btrace; /* Must clear the maint data before - it depends on BTINFO->DATA. */ btrace_maint_clear (btinfo); @@ -3357,15 +3353,13 @@ maint_btrace_clear_packet_history_cmd (const char *args, int from_tty) static void maint_btrace_clear_cmd (const char *args, int from_tty) { - struct thread_info *tp; - if (args != NULL && *args != 0) error (_("Invalid argument.")); - tp = find_thread_ptid (inferior_ptid); - if (tp == NULL) + if (inferior_ptid == null_ptid) error (_("No thread.")); + thread_info *tp = inferior_thread (); btrace_clear (tp); } @@ -3420,16 +3414,16 @@ static void maint_info_btrace_cmd (const char *args, int from_tty) { struct btrace_thread_info *btinfo; - struct thread_info *tp; const struct btrace_config *conf; if (args != NULL && *args != 0) error (_("Invalid argument.")); - tp = find_thread_ptid (inferior_ptid); - if (tp == NULL) + if (inferior_ptid == null_ptid) error (_("No thread.")); + thread_info *tp = inferior_thread (); + btinfo = &tp->btrace; conf = btrace_conf (btinfo); diff --git a/gdb/cli/cli-interp.c b/gdb/cli/cli-interp.c index e12d45b..2aa41d6 100644 --- a/gdb/cli/cli-interp.c +++ b/gdb/cli/cli-interp.c @@ -29,6 +29,7 @@ #include "observable.h" #include "gdbthread.h" #include "thread-fsm.h" +#include "inferior.h" cli_interp_base::cli_interp_base (const char *name) : interp (name) diff --git a/gdb/common/refcounted-object.h b/gdb/common/refcounted-object.h index e9cdc04..a3799d8 100644 --- a/gdb/common/refcounted-object.h +++ b/gdb/common/refcounted-object.h @@ -51,4 +51,20 @@ private: int m_refcount = 0; }; +/* A policy class to interface gdb::ref_ptr with a + refcounted_object. */ + +struct refcounted_object_ref_policy +{ + static void incref (refcounted_object *ptr) + { + ptr->incref (); + } + + static void decref (refcounted_object *ptr) + { + ptr->decref (); + } +}; + #endif /* REFCOUNTED_OBJECT_H */ diff --git a/gdb/compile/compile-object-load.c b/gdb/compile/compile-object-load.c index fac16d7..9b3c51f 100644 --- a/gdb/compile/compile-object-load.c +++ b/gdb/compile/compile-object-load.c @@ -28,6 +28,7 @@ #include "gdbcmd.h" #include "regcache.h" #include "inferior.h" +#include "gdbthread.h" #include "compile.h" #include "block.h" #include "arch-utils.h" @@ -554,8 +555,9 @@ get_regs_type (struct symbol *func_sym, struct objfile *objfile) static void store_regs (struct type *regs_type, CORE_ADDR regs_base) { + thread_info *thread = inferior_thread (); struct gdbarch *gdbarch = target_gdbarch (); - struct regcache *regcache = get_thread_regcache (inferior_ptid); + struct regcache *regcache = get_thread_regcache (thread); int fieldno; for (fieldno = 0; fieldno < TYPE_NFIELDS (regs_type); fieldno++) diff --git a/gdb/corelow.c b/gdb/corelow.c index 2ae233e..ed20b53 100644 --- a/gdb/corelow.c +++ b/gdb/corelow.c @@ -260,11 +260,9 @@ core_target::close () { if (core_bfd) { - int pid = ptid_get_pid (inferior_ptid); inferior_ptid = null_ptid; /* Avoid confusion from thread stuff. */ - if (pid != 0) - exit_inferior_silent (pid); + exit_inferior_silent (current_inferior ()); /* Clear out solib state while the bfd is still open. See comments in clear_solib in solib.c. */ @@ -454,7 +452,7 @@ core_target_open (const char *arg, int from_tty) which was the "main" thread. The latter case shouldn't usually happen, but we're dealing with input here, which can always be broken in different ways. */ - struct thread_info *thread = first_thread_of_process (-1); + thread_info *thread = first_thread_of_inferior (current_inferior ()); if (thread == NULL) { @@ -463,7 +461,7 @@ core_target_open (const char *arg, int from_tty) add_thread_silent (inferior_ptid); } else - switch_to_thread (thread->ptid); + switch_to_thread (thread); } post_create_inferior (target, from_tty); @@ -1175,15 +1175,12 @@ ctf_target_open (const char *dirname, int from_tty) void ctf_target::close () { - int pid; - ctf_destroy (); xfree (trace_dirname); trace_dirname = NULL; - pid = ptid_get_pid (inferior_ptid); inferior_ptid = null_ptid; /* Avoid confusion from thread stuff. */ - exit_inferior_silent (pid); + exit_inferior_silent (current_inferior ()); trace_reset_local_state (); } diff --git a/gdb/dummy-frame.c b/gdb/dummy-frame.c index 82e7251..c6f874a 100644 --- a/gdb/dummy-frame.c +++ b/gdb/dummy-frame.c @@ -37,7 +37,7 @@ struct dummy_frame_id struct frame_id id; /* The thread this dummy_frame relates to. */ - ptid_t ptid; + thread_info *thread; }; /* Return whether dummy_frame_id *ID1 and *ID2 are equal. */ @@ -46,7 +46,7 @@ static int dummy_frame_id_eq (struct dummy_frame_id *id1, struct dummy_frame_id *id2) { - return frame_id_eq (id1->id, id2->id) && ptid_equal (id1->ptid, id2->ptid); + return frame_id_eq (id1->id, id2->id) && id1->thread == id2->thread; } /* List of dummy_frame destructors. */ @@ -89,14 +89,14 @@ static struct dummy_frame *dummy_frame_stack = NULL; void dummy_frame_push (struct infcall_suspend_state *caller_state, - const struct frame_id *dummy_id, ptid_t ptid) + const frame_id *dummy_id, thread_info *thread) { struct dummy_frame *dummy_frame; dummy_frame = XCNEW (struct dummy_frame); dummy_frame->caller_state = caller_state; dummy_frame->id.id = (*dummy_id); - dummy_frame->id.ptid = ptid; + dummy_frame->id.thread = thread; dummy_frame->next = dummy_frame_stack; dummy_frame_stack = dummy_frame; } @@ -130,7 +130,7 @@ pop_dummy_frame_bpt (struct breakpoint *b, void *dummy_voidp) { struct dummy_frame *dummy = (struct dummy_frame *) dummy_voidp; - if (b->thread == ptid_to_global_thread_id (dummy->id.ptid) + if (b->thread == dummy->id.thread->global_num && b->disposition == disp_del && frame_id_eq (b->frame_id, dummy->id.id)) { while (b->related_breakpoint != b) @@ -154,7 +154,7 @@ pop_dummy_frame (struct dummy_frame **dummy_ptr) { struct dummy_frame *dummy = *dummy_ptr; - gdb_assert (ptid_equal (dummy->id.ptid, inferior_ptid)); + gdb_assert (dummy->id.thread == inferior_thread ()); while (dummy->dtor_list != NULL) { @@ -196,16 +196,16 @@ lookup_dummy_frame (struct dummy_frame_id *dummy_id) return NULL; } -/* Find the dummy frame by DUMMY_ID and PTID, and pop it, restoring +/* Find the dummy frame by DUMMY_ID and THREAD, and pop it, restoring program state to that before the frame was created. On return reinit_frame_cache has been called. If the frame isn't found, flag an internal error. */ void -dummy_frame_pop (struct frame_id dummy_id, ptid_t ptid) +dummy_frame_pop (frame_id dummy_id, thread_info *thread) { struct dummy_frame **dp; - struct dummy_frame_id id = { dummy_id, ptid }; + struct dummy_frame_id id = { dummy_id, thread }; dp = lookup_dummy_frame (&id); gdb_assert (dp != NULL); @@ -218,10 +218,10 @@ dummy_frame_pop (struct frame_id dummy_id, ptid_t ptid) free its memory. */ void -dummy_frame_discard (struct frame_id dummy_id, ptid_t ptid) +dummy_frame_discard (struct frame_id dummy_id, thread_info *thread) { struct dummy_frame **dp; - struct dummy_frame_id id = { dummy_id, ptid }; + struct dummy_frame_id id = { dummy_id, thread }; dp = lookup_dummy_frame (&id); if (dp) @@ -231,10 +231,10 @@ dummy_frame_discard (struct frame_id dummy_id, ptid_t ptid) /* See dummy-frame.h. */ void -register_dummy_frame_dtor (struct frame_id dummy_id, ptid_t ptid, +register_dummy_frame_dtor (frame_id dummy_id, thread_info *thread, dummy_frame_dtor_ftype *dtor, void *dtor_data) { - struct dummy_frame_id id = { dummy_id, ptid }; + struct dummy_frame_id id = { dummy_id, thread }; struct dummy_frame **dp, *d; struct dummy_frame_dtor_list *list; @@ -306,7 +306,7 @@ dummy_frame_sniffer (const struct frame_unwind *self, dummy ID, assuming it is a dummy frame. */ struct frame_id this_id = gdbarch_dummy_id (get_frame_arch (this_frame), this_frame); - struct dummy_frame_id dummy_id = { this_id, inferior_ptid }; + struct dummy_frame_id dummy_id = { this_id, inferior_thread () }; /* Use that ID to find the corresponding cache entry. */ for (dummyframe = dummy_frame_stack; @@ -397,7 +397,7 @@ fprint_dummy_frames (struct ui_file *file) fprintf_unfiltered (file, " id="); fprint_frame_id (file, s->id.id); fprintf_unfiltered (file, ", ptid=%s", - target_pid_to_str (s->id.ptid)); + target_pid_to_str (s->id.thread->ptid)); fprintf_unfiltered (file, "\n"); } } diff --git a/gdb/dummy-frame.h b/gdb/dummy-frame.h index cad9960..407f398 100644 --- a/gdb/dummy-frame.h +++ b/gdb/dummy-frame.h @@ -33,8 +33,9 @@ struct frame_unwind; be expanded so that it knowns the lower/upper extent of the dummy frame's code. */ -extern void dummy_frame_push (struct infcall_suspend_state *caller_state, - const struct frame_id *dummy_id, ptid_t ptid); +extern void dummy_frame_push (infcall_suspend_state *caller_state, + const frame_id *dummy_id, + thread_info *thread); /* Pop the dummy frame DUMMY_ID, restoring program state to that before the frame was created. @@ -45,9 +46,9 @@ extern void dummy_frame_push (struct infcall_suspend_state *caller_state, stack, because the other frames may be for different threads, and there's currently no way to tell which stack frame is for which thread. */ -extern void dummy_frame_pop (struct frame_id dummy_id, ptid_t ptid); +extern void dummy_frame_pop (frame_id dummy_id, thread_info *thread); -extern void dummy_frame_discard (struct frame_id dummy_id, ptid_t ptid); +extern void dummy_frame_discard (frame_id dummy_id, thread_info *thread); /* If the PC falls in a dummy frame, return a dummy frame unwinder. */ @@ -58,11 +59,12 @@ extern const struct frame_unwind dummy_frame_unwind; REGISTERS_VALID is 1 for dummy_frame_pop, 0 for dummy_frame_discard. */ typedef void (dummy_frame_dtor_ftype) (void *data, int registers_valid); -/* Call DTOR with DTOR_DATA when DUMMY_ID frame of thread PTID gets discarded. - Dummy frame with DUMMY_ID must exist. Multiple destructors may be - registered, they will be called in the reverse order of registrations - (LIFO). */ -extern void register_dummy_frame_dtor (struct frame_id dummy_id, ptid_t ptid, +/* Call DTOR with DTOR_DATA when DUMMY_ID frame of thread THREAD gets + discarded. Dummy frame with DUMMY_ID must exist. Multiple + destructors may be registered, they will be called in the reverse + order of registrations (LIFO). */ +extern void register_dummy_frame_dtor (frame_id dummy_id, + thread_info *thread, dummy_frame_dtor_ftype *dtor, void *dtor_data); diff --git a/gdb/elfread.c b/gdb/elfread.c index 0d538e6..e11c051 100644 --- a/gdb/elfread.c +++ b/gdb/elfread.c @@ -41,6 +41,7 @@ #include "value.h" #include "infcall.h" #include "gdbthread.h" +#include "inferior.h" #include "regcache.h" #include "bcache.h" #include "gdb_bfd.h" @@ -924,7 +925,7 @@ elf_gnu_ifunc_resolver_stop (struct breakpoint *b) struct frame_info *prev_frame = get_prev_frame (get_current_frame ()); struct frame_id prev_frame_id = get_stack_frame_id (prev_frame); CORE_ADDR prev_pc = get_frame_pc (prev_frame); - int thread_id = ptid_to_global_thread_id (inferior_ptid); + int thread_id = inferior_thread ()->global_num; gdb_assert (b->type == bp_gnu_ifunc_resolver); @@ -971,10 +972,11 @@ elf_gnu_ifunc_resolver_stop (struct breakpoint *b) static void elf_gnu_ifunc_resolver_return_stop (struct breakpoint *b) { + thread_info *thread = inferior_thread (); struct gdbarch *gdbarch = get_frame_arch (get_current_frame ()); struct type *func_func_type = builtin_type (gdbarch)->builtin_func_func; struct type *value_type = TYPE_TARGET_TYPE (func_func_type); - struct regcache *regcache = get_thread_regcache (inferior_ptid); + struct regcache *regcache = get_thread_regcache (thread); struct value *func_func; struct value *value; CORE_ADDR resolved_address, resolved_pc; @@ -74,14 +74,14 @@ evaluate_subexp (struct type *expect_type, struct expression *exp, gdb::optional<enable_thread_stack_temporaries> stack_temporaries; if (*pos == 0 && target_has_execution && exp->language_defn->la_language == language_cplus - && !thread_stack_temporaries_enabled_p (inferior_ptid)) - stack_temporaries.emplace (inferior_ptid); + && !thread_stack_temporaries_enabled_p (inferior_thread ())) + stack_temporaries.emplace (inferior_thread ()); retval = (*exp->language_defn->la_exp_desc->evaluate_exp) (expect_type, exp, pos, noside); if (stack_temporaries.has_value () - && value_in_thread_stack_temporaries (retval, inferior_ptid)) + && value_in_thread_stack_temporaries (retval, inferior_thread ())) retval = value_non_lval (retval); return retval; diff --git a/gdb/fbsd-tdep.c b/gdb/fbsd-tdep.c index e49a9af..455deb1 100644 --- a/gdb/fbsd-tdep.c +++ b/gdb/fbsd-tdep.c @@ -1146,8 +1146,7 @@ fbsd_get_siginfo_type (struct gdbarch *gdbarch) /* Implement the "get_syscall_number" gdbarch method. */ static LONGEST -fbsd_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) +fbsd_get_syscall_number (struct gdbarch *gdbarch, thread_info *thread) { /* FreeBSD doesn't use gdbarch_get_syscall_number since FreeBSD diff --git a/gdb/frame.c b/gdb/frame.c index 450bf3a..1fe882c 100644 --- a/gdb/frame.c +++ b/gdb/frame.c @@ -1050,7 +1050,7 @@ frame_pop (struct frame_info *this_frame) { /* Popping a dummy frame involves restoring more than just registers. dummy_frame_pop does all the work. */ - dummy_frame_pop (get_frame_id (this_frame), inferior_ptid); + dummy_frame_pop (get_frame_id (this_frame), inferior_thread ()); return; } @@ -1622,15 +1622,16 @@ has_stack_frames (void) if (get_traceframe_number () < 0) { /* No current inferior, no frame. */ - if (ptid_equal (inferior_ptid, null_ptid)) + if (inferior_ptid == null_ptid) return 0; + thread_info *tp = inferior_thread (); /* Don't try to read from a dead thread. */ - if (is_exited (inferior_ptid)) + if (tp->state == THREAD_EXITED) return 0; /* ... or from a spinning thread. */ - if (is_executing (inferior_ptid)) + if (tp->executing) return 0; } @@ -2497,7 +2498,7 @@ find_frame_sal (frame_info *frame) if (next_frame) sym = get_frame_function (next_frame); else - sym = inline_skipped_symbol (inferior_ptid); + sym = inline_skipped_symbol (inferior_thread ()); /* If frame is inline, it certainly has symbols. */ gdb_assert (sym); diff --git a/gdb/gdb_proc_service.h b/gdb/gdb_proc_service.h index b5ab0e5..41175a6 100644 --- a/gdb/gdb_proc_service.h +++ b/gdb/gdb_proc_service.h @@ -23,6 +23,8 @@ #include "gregset.h" +struct thread_info; + #ifdef HAVE_PROC_SERVICE_H /* glibc's proc_service.h doesn't wrap itself with extern "C". Need @@ -179,7 +181,7 @@ typedef prfpregset_t gdb_prfpregset_t; struct ps_prochandle { /* The LWP we use for memory reads. */ - ptid_t ptid; + thread_info *thread; }; #endif /* gdb_proc_service.h */ diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c index 558cc55..0c8d8ee 100644 --- a/gdb/gdbarch.c +++ b/gdb/gdbarch.c @@ -4269,13 +4269,13 @@ gdbarch_get_syscall_number_p (struct gdbarch *gdbarch) } LONGEST -gdbarch_get_syscall_number (struct gdbarch *gdbarch, ptid_t ptid) +gdbarch_get_syscall_number (struct gdbarch *gdbarch, thread_info *thread) { gdb_assert (gdbarch != NULL); gdb_assert (gdbarch->get_syscall_number != NULL); if (gdbarch_debug >= 2) fprintf_unfiltered (gdb_stdlog, "gdbarch_get_syscall_number called\n"); - return gdbarch->get_syscall_number (gdbarch, ptid); + return gdbarch->get_syscall_number (gdbarch, thread); } void diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h index 09edcd5..d13672bd 100644 --- a/gdb/gdbarch.h +++ b/gdb/gdbarch.h @@ -1168,8 +1168,8 @@ extern void set_gdbarch_record_special_symbol (struct gdbarch *gdbarch, gdbarch_ extern int gdbarch_get_syscall_number_p (struct gdbarch *gdbarch); -typedef LONGEST (gdbarch_get_syscall_number_ftype) (struct gdbarch *gdbarch, ptid_t ptid); -extern LONGEST gdbarch_get_syscall_number (struct gdbarch *gdbarch, ptid_t ptid); +typedef LONGEST (gdbarch_get_syscall_number_ftype) (struct gdbarch *gdbarch, thread_info *thread); +extern LONGEST gdbarch_get_syscall_number (struct gdbarch *gdbarch, thread_info *thread); extern void set_gdbarch_get_syscall_number (struct gdbarch *gdbarch, gdbarch_get_syscall_number_ftype *get_syscall_number); /* The filename of the XML syscall for this architecture. */ diff --git a/gdb/gdbarch.sh b/gdb/gdbarch.sh index 0a23b1e..c85444d 100755 --- a/gdb/gdbarch.sh +++ b/gdb/gdbarch.sh @@ -904,7 +904,7 @@ M;void;record_special_symbol;struct objfile *objfile, asymbol *sym;objfile, sym # Function for the 'catch syscall' feature. # Get architecture-specific system calls information from registers. -M;LONGEST;get_syscall_number;ptid_t ptid;ptid +M;LONGEST;get_syscall_number;thread_info *thread;thread # The filename of the XML syscall for this architecture. v;const char *;xml_syscall_file;;;0;0;;0;pstring (gdbarch->xml_syscall_file) diff --git a/gdb/gdbthread.h b/gdb/gdbthread.h index 09ea5ba..bd5ab91 100644 --- a/gdb/gdbthread.h +++ b/gdb/gdbthread.h @@ -211,6 +211,9 @@ public: return (refcount () == 0 && !ptid_equal (ptid, inferior_ptid)); } + /* Mark this thread as running and notify observers. */ + void set_running (bool running); + struct thread_info *next = NULL; ptid_t ptid; /* "Actual process id"; In fact, this may be overloaded with @@ -367,6 +370,11 @@ public: struct thread_info *step_over_next = NULL; }; +/* A gdb::ref_ptr pointer to a thread_info. */ + +using thread_info_ref + = gdb::ref_ptr<thread_info, refcounted_object_ref_policy>; + /* Create an empty thread list, or empty the existing one. */ extern void init_thread_list (void); @@ -385,12 +393,12 @@ extern struct thread_info *add_thread_with_info (ptid_t ptid, struct private_thread_info *); /* Delete an existing thread list entry. */ -extern void delete_thread (ptid_t); +extern void delete_thread (thread_info *thread); /* Delete an existing thread list entry, and be quiet about it. Used after the process this thread having belonged to having already exited, for example. */ -extern void delete_thread_silent (ptid_t); +extern void delete_thread_silent (thread_info *thread); /* Delete a step_resume_breakpoint from the thread database. */ extern void delete_step_resume_breakpoint (struct thread_info *); @@ -411,16 +419,6 @@ extern int thread_has_single_step_breakpoint_here (struct thread_info *tp, const address_space *aspace, CORE_ADDR addr); -/* Translate the global integer thread id (GDB's homegrown id, not the - system's) into a "pid" (which may be overloaded with extra thread - information). */ -extern ptid_t global_thread_id_to_ptid (int num); - -/* Translate a 'pid' (which may be overloaded with extra thread - information) into the global integer thread id (GDB's homegrown id, - not the system's). */ -extern int ptid_to_global_thread_id (ptid_t ptid); - /* Returns whether to show inferior-qualified thread IDs, or plain thread numbers. Inferior-qualified IDs are shown whenever we have multiple inferiors, or the only inferior left has number > 1. */ @@ -432,8 +430,7 @@ extern int show_inferior_qualified_tids (void); circular static buffer, NUMCELLS deep. */ const char *print_thread_id (struct thread_info *thr); -/* Boolean test for an already-known pid (which may be overloaded with - extra thread information). */ +/* Boolean test for an already-known ptid. */ extern int in_thread_list (ptid_t ptid); /* Boolean test for an already-known global thread id (GDB's homegrown @@ -450,17 +447,16 @@ struct thread_info *find_thread_global_id (int global_id); struct thread_info *find_thread_by_handle (struct value *thread_handle, struct inferior *inf); -/* Finds the first thread of the inferior given by PID. If PID is -1, - returns the first thread in the list. */ -struct thread_info *first_thread_of_process (int pid); +/* Finds the first thread of the specified inferior. */ +extern thread_info *first_thread_of_inferior (inferior *inf); -/* Returns any thread of process PID, giving preference to the current - thread. */ -extern struct thread_info *any_thread_of_process (int pid); +/* Returns any thread of inferior INF, giving preference to the + current thread. */ +extern thread_info *any_thread_of_inferior (inferior *inf); -/* Returns any non-exited thread of process PID, giving preference to +/* Returns any non-exited thread of inferior INF, giving preference to the current thread, and to not executing threads. */ -extern struct thread_info *any_live_thread_of_process (int pid); +extern thread_info *any_live_thread_of_inferior (inferior *inf); /* Change the ptid of thread OLD_PTID to NEW_PTID. */ void thread_change_ptid (ptid_t old_ptid, ptid_t new_ptid); @@ -496,6 +492,12 @@ extern struct thread_info *iterate_over_threads (thread_callback_func, void *); extern int thread_count (void); +/* Switch context to thread THR. Also sets the STOP_PC global. */ +extern void switch_to_thread (thread_info *thr); + +/* Switch context to no thread selected. */ +extern void switch_to_no_thread (); + /* Switch from one thread to another. Does not read registers and sets STOP_PC to -1. */ extern void switch_to_thread_no_regs (struct thread_info *thread); @@ -549,9 +551,6 @@ extern int is_stopped (ptid_t ptid); thread_info. */ extern void set_executing (ptid_t ptid, int executing); -/* Reports if thread PTID is executing. */ -extern int is_executing (ptid_t ptid); - /* True if any (known or unknown) thread is or may be executing. */ extern int threads_are_executing (void); @@ -653,48 +652,48 @@ extern void delete_exited_threads (void); int pc_in_thread_step_range (CORE_ADDR pc, struct thread_info *thread); -/* Enable storing stack temporaries for thread with id PTID and - disable and clear the stack temporaries on destruction. */ +/* Enable storing stack temporaries for thread THR and disable and + clear the stack temporaries on destruction. Holds a strong + reference to THR. */ class enable_thread_stack_temporaries { public: - explicit enable_thread_stack_temporaries (ptid_t ptid) - : m_ptid (ptid) + explicit enable_thread_stack_temporaries (thread_info *thr) + : m_thr (thr) { - struct thread_info *tp = find_thread_ptid (ptid); + gdb_assert (m_thr != NULL); - gdb_assert (tp != NULL); - tp->stack_temporaries_enabled = true; - tp->stack_temporaries.clear (); + m_thr->incref (); + + m_thr->stack_temporaries_enabled = true; + m_thr->stack_temporaries.clear (); } ~enable_thread_stack_temporaries () { - struct thread_info *tp = find_thread_ptid (m_ptid); + m_thr->stack_temporaries_enabled = false; + m_thr->stack_temporaries.clear (); - if (tp != NULL) - { - tp->stack_temporaries_enabled = false; - tp->stack_temporaries.clear (); - } + m_thr->decref (); } DISABLE_COPY_AND_ASSIGN (enable_thread_stack_temporaries); private: - ptid_t m_ptid; + thread_info *m_thr; }; -extern bool thread_stack_temporaries_enabled_p (ptid_t ptid); +extern bool thread_stack_temporaries_enabled_p (thread_info *tp); -extern void push_thread_stack_temporary (ptid_t ptid, struct value *v); +extern void push_thread_stack_temporary (thread_info *tp, struct value *v); -extern struct value *get_last_thread_stack_temporary (ptid_t); +extern value *get_last_thread_stack_temporary (thread_info *tp); -extern bool value_in_thread_stack_temporaries (struct value *, ptid_t); +extern bool value_in_thread_stack_temporaries (struct value *, + thread_info *thr); /* Add TP to the end of its inferior's pending step-over chain. */ @@ -722,9 +721,9 @@ extern void thread_cancel_execution_command (struct thread_info *thr); executing). */ extern void validate_registers_access (void); -/* Check whether it makes sense to access a register of PTID at this point. +/* Check whether it makes sense to access a register of THREAD at this point. Returns true if registers may be accessed; false otherwise. */ -extern bool can_access_registers_ptid (ptid_t ptid); +extern bool can_access_registers_thread (thread_info *thread); /* Returns whether to show which thread hit the breakpoint, received a signal, etc. and ended up causing a user-visible stop. This is diff --git a/gdb/i386-linux-tdep.c b/gdb/i386-linux-tdep.c index 1919c8b..f5b039b 100644 --- a/gdb/i386-linux-tdep.c +++ b/gdb/i386-linux-tdep.c @@ -559,9 +559,9 @@ i386_linux_get_syscall_number_from_regcache (struct regcache *regcache) static LONGEST i386_linux_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) + thread_info *thread) { - struct regcache *regcache = get_thread_regcache (ptid); + struct regcache *regcache = get_thread_regcache (thread); return i386_linux_get_syscall_number_from_regcache (regcache); } diff --git a/gdb/infcall.c b/gdb/infcall.c index c20ab6f..e1861dc 100644 --- a/gdb/infcall.c +++ b/gdb/infcall.c @@ -422,7 +422,8 @@ static struct value * get_call_return_value (struct call_return_meta_info *ri) { struct value *retval = NULL; - bool stack_temporaries = thread_stack_temporaries_enabled_p (inferior_ptid); + thread_info *thr = inferior_thread (); + bool stack_temporaries = thread_stack_temporaries_enabled_p (thr); if (TYPE_CODE (ri->value_type) == TYPE_CODE_VOID) retval = allocate_value (ri->value_type); @@ -432,7 +433,7 @@ get_call_return_value (struct call_return_meta_info *ri) { retval = value_from_contents_and_address (ri->value_type, NULL, ri->struct_addr); - push_thread_stack_temporary (inferior_ptid, retval); + push_thread_stack_temporary (thr, retval); } else { @@ -458,7 +459,7 @@ get_call_return_value (struct call_return_meta_info *ri) the this pointer, GDB needs the memory address of the value. */ value_force_lval (retval, ri->struct_addr); - push_thread_stack_temporary (inferior_ptid, retval); + push_thread_stack_temporary (thr, retval); } } @@ -586,6 +587,7 @@ run_inferior_call (struct call_thread_fsm *sm, struct gdb_exception caught_error = exception_none; int saved_in_infcall = call_thread->control.in_infcall; ptid_t call_thread_ptid = call_thread->ptid; + inferior *call_thread_inf = call_thread->inf; enum prompt_state saved_prompt_state = current_ui->prompt_state; int was_running = call_thread->state == THREAD_RUNNING; int saved_ui_async = current_ui->async; @@ -637,10 +639,6 @@ run_inferior_call (struct call_thread_fsm *sm, ui_register_input_event_handler (current_ui); current_ui->async = saved_ui_async; - /* At this point the current thread may have changed. Refresh - CALL_THREAD as it could be invalid if its thread has exited. */ - call_thread = find_thread_ptid (call_thread_ptid); - /* If the infcall does NOT succeed, normal_stop will have already finished the thread states. However, on success, normal_stop defers here, so that we can set back the thread states to what @@ -657,7 +655,7 @@ run_inferior_call (struct call_thread_fsm *sm, evaluates true and thus we'll present a user-visible stop is decided elsewhere. */ if (!was_running - && ptid_equal (call_thread_ptid, inferior_ptid) + && call_thread_ptid == inferior_ptid && stop_stack_dummy == STOP_STACK_DUMMY) finish_thread_state (user_visible_resume_ptid (0)); @@ -670,12 +668,11 @@ run_inferior_call (struct call_thread_fsm *sm, of error out of resume()), then we wouldn't need this. */ if (caught_error.reason < 0) { - if (call_thread != NULL) + if (call_thread->state != THREAD_EXITED) breakpoint_auto_delete (call_thread->control.stop_bpstat); } - if (call_thread != NULL) - call_thread->control.in_infcall = saved_in_infcall; + call_thread->control.in_infcall = saved_in_infcall; return caught_error; } @@ -739,7 +736,6 @@ call_function_by_hand_dummy (struct value *function, ptid_t call_thread_ptid; struct gdb_exception e; char name_buf[RAW_FUNCTION_ADDRESS_SIZE]; - bool stack_temporaries = thread_stack_temporaries_enabled_p (inferior_ptid); if (!target_has_execution) noprocess (); @@ -750,6 +746,14 @@ call_function_by_hand_dummy (struct value *function, if (execution_direction == EXEC_REVERSE) error (_("Cannot call functions in reverse mode.")); + /* We're going to run the target, and inspect the thread's state + afterwards. Hold a strong reference so that the pointer remains + valid even if the thread exits. */ + thread_info_ref call_thread + = thread_info_ref::new_reference (inferior_thread ()); + + bool stack_temporaries = thread_stack_temporaries_enabled_p (call_thread.get ()); + frame = get_current_frame (); gdbarch = get_frame_arch (frame); @@ -842,7 +846,7 @@ call_function_by_hand_dummy (struct value *function, { struct value *lastval; - lastval = get_last_thread_stack_temporary (inferior_ptid); + lastval = get_last_thread_stack_temporary (call_thread.get ()); if (lastval != NULL) { CORE_ADDR lastval_addr = value_address (lastval); @@ -1137,9 +1141,9 @@ call_function_by_hand_dummy (struct value *function, /* Everything's ready, push all the info needed to restore the caller (and identify the dummy-frame) onto the dummy-frame stack. */ - dummy_frame_push (caller_state, &dummy_id, inferior_ptid); + dummy_frame_push (caller_state, &dummy_id, call_thread.get ()); if (dummy_dtor != NULL) - register_dummy_frame_dtor (dummy_id, inferior_ptid, + register_dummy_frame_dtor (dummy_id, call_thread.get (), dummy_dtor, dummy_dtor_data); /* Register a clean-up for unwind_on_terminating_exception_breakpoint. */ @@ -1150,20 +1154,17 @@ call_function_by_hand_dummy (struct value *function, If you're looking to implement asynchronous dummy-frames, then just below is the place to chop this function in two.. */ - /* TP is invalid after run_inferior_call returns, so enclose this - in a block so that it's only in scope during the time it's valid. */ { - struct thread_info *tp = inferior_thread (); struct thread_fsm *saved_sm; struct call_thread_fsm *sm; /* Save the current FSM. We'll override it. */ - saved_sm = tp->thread_fsm; - tp->thread_fsm = NULL; + saved_sm = call_thread->thread_fsm; + call_thread->thread_fsm = NULL; /* Save this thread's ptid, we need it later but the thread may have exited. */ - call_thread_ptid = tp->ptid; + call_thread_ptid = call_thread->ptid; /* Run the inferior until it stops. */ @@ -1177,17 +1178,16 @@ call_function_by_hand_dummy (struct value *function, struct_return || hidden_first_param_p, struct_addr); - e = run_inferior_call (sm, tp, real_pc); + e = run_inferior_call (sm, call_thread.get (), real_pc); gdb::observers::inferior_call_post.notify (call_thread_ptid, funaddr); - tp = find_thread_ptid (call_thread_ptid); - if (tp != NULL) + if (call_thread->state != THREAD_EXITED) { /* The FSM should still be the same. */ - gdb_assert (tp->thread_fsm == &sm->thread_fsm); + gdb_assert (call_thread->thread_fsm == &sm->thread_fsm); - if (thread_fsm_finished_p (tp->thread_fsm)) + if (thread_fsm_finished_p (call_thread->thread_fsm)) { struct value *retval; @@ -1195,7 +1195,7 @@ call_function_by_hand_dummy (struct value *function, which runs its destructors and restores the inferior's suspend state, and restore the inferior control state. */ - dummy_frame_pop (dummy_id, call_thread_ptid); + dummy_frame_pop (dummy_id, call_thread.get ()); restore_infcall_control_state (inf_status); /* Get the return value. */ @@ -1203,9 +1203,9 @@ call_function_by_hand_dummy (struct value *function, /* Clean up / destroy the call FSM, and restore the original one. */ - thread_fsm_clean_up (tp->thread_fsm, tp); - thread_fsm_delete (tp->thread_fsm); - tp->thread_fsm = saved_sm; + thread_fsm_clean_up (call_thread->thread_fsm, call_thread.get ()); + thread_fsm_delete (call_thread->thread_fsm); + call_thread->thread_fsm = saved_sm; maybe_remove_breakpoints (); @@ -1216,7 +1216,7 @@ call_function_by_hand_dummy (struct value *function, /* Didn't complete. Restore previous state machine, and handle the error. */ - tp->thread_fsm = saved_sm; + call_thread->thread_fsm = saved_sm; } } @@ -1317,7 +1317,7 @@ When the function is done executing, GDB will silently stop."), /* We must get back to the frame we were before the dummy call. */ - dummy_frame_pop (dummy_id, call_thread_ptid); + dummy_frame_pop (dummy_id, call_thread.get ()); /* We also need to restore inferior status to that before the dummy call. */ @@ -1358,7 +1358,7 @@ When the function is done executing, GDB will silently stop."), { /* We must get back to the frame we were before the dummy call. */ - dummy_frame_pop (dummy_id, call_thread_ptid); + dummy_frame_pop (dummy_id, call_thread.get ()); /* We also need to restore inferior status to that before the dummy call. */ diff --git a/gdb/infcmd.c b/gdb/infcmd.c index 5c5faf7..c6fd9ab 100644 --- a/gdb/infcmd.c +++ b/gdb/infcmd.c @@ -723,10 +723,10 @@ proceed_thread_callback (struct thread_info *thread, void *arg) much. If/when GDB gains a way to tell the target `hold this thread stopped until I say otherwise', then we can optimize this. */ - if (!is_stopped (thread->ptid)) + if (thread->state != THREAD_STOPPED) return 0; - switch_to_thread (thread->ptid); + switch_to_thread (thread); clear_proceed_status (0); proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); return 0; @@ -735,8 +735,8 @@ proceed_thread_callback (struct thread_info *thread, void *arg) static void ensure_valid_thread (void) { - if (ptid_equal (inferior_ptid, null_ptid) - || is_exited (inferior_ptid)) + if (inferior_ptid == null_ptid + || inferior_thread ()->state == THREAD_EXITED) error (_("Cannot execute this command without a live selected thread.")); } @@ -765,7 +765,7 @@ error_is_running (void) static void ensure_not_running (void) { - if (is_running (inferior_ptid)) + if (inferior_thread ()->state == THREAD_RUNNING) error_is_running (); } @@ -855,7 +855,7 @@ continue_command (const char *args, int from_tty) struct thread_info *tp; if (non_stop) - tp = find_thread_ptid (inferior_ptid); + tp = inferior_thread (); else { ptid_t last_ptid; @@ -1148,7 +1148,7 @@ prepare_one_step (struct step_command_fsm *sm) /* Step at an inlined function behaves like "down". */ if (!sm->skip_subroutines - && inline_skipped_frames (inferior_ptid)) + && inline_skipped_frames (tp)) { ptid_t resume_ptid; @@ -1156,7 +1156,7 @@ prepare_one_step (struct step_command_fsm *sm) resume_ptid = user_visible_resume_ptid (1); set_running (resume_ptid, 1); - step_into_inline_frame (inferior_ptid); + step_into_inline_frame (tp); sm->count--; return prepare_one_step (sm); } @@ -2076,7 +2076,6 @@ info_program_command (const char *args, int from_tty) { bpstat bs; int num, stat; - struct thread_info *tp; ptid_t ptid; if (!target_has_execution) @@ -2094,12 +2093,16 @@ info_program_command (const char *args, int from_tty) get_last_target_status (&ptid, &ws); } - if (ptid_equal (ptid, null_ptid) || is_exited (ptid)) + if (ptid == null_ptid) + error (_("No selected thread.")); + + thread_info *tp = find_thread_ptid (ptid); + + if (tp->state == THREAD_EXITED) error (_("Invalid selected thread.")); - else if (is_running (ptid)) + else if (tp->state == THREAD_RUNNING) error (_("Selected thread is running.")); - tp = find_thread_ptid (ptid); bs = tp->control.stop_bpstat; stat = bpstat_num (&bs, &num); @@ -2638,12 +2641,12 @@ proceed_after_attach_callback (struct thread_info *thread, int pid = * (int *) arg; if (ptid_get_pid (thread->ptid) == pid - && !is_exited (thread->ptid) - && !is_executing (thread->ptid) + && thread->state != THREAD_EXITED + && !thread->executing && !thread->stop_requested && thread->suspend.stop_signal == GDB_SIGNAL_0) { - switch_to_thread (thread->ptid); + switch_to_thread (thread); clear_proceed_status (0); proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); } @@ -2773,7 +2776,7 @@ attach_post_wait (const char *args, int from_tty, enum attach_post_wait_mode mod } } - switch_to_thread (lowest->ptid); + switch_to_thread (lowest); } /* Tell the user/frontend where we're stopped. */ @@ -2939,7 +2942,7 @@ attach_command (const char *args, int from_tty) as stopped. */ void -notice_new_inferior (ptid_t ptid, int leave_running, int from_tty) +notice_new_inferior (thread_info *thr, int leave_running, int from_tty) { enum attach_post_wait_mode mode = leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING; @@ -2951,12 +2954,12 @@ notice_new_inferior (ptid_t ptid, int leave_running, int from_tty) /* Avoid reading registers -- we haven't fetched the target description yet. */ - switch_to_thread_no_regs (find_thread_ptid (ptid)); + switch_to_thread_no_regs (thr); /* When we "notice" a new inferior we need to do all the things we would normally do if we had just attached to it. */ - if (is_executing (inferior_ptid)) + if (thr->executing) { struct attach_command_continuation_args *a; struct inferior *inferior = current_inferior (); diff --git a/gdb/inferior.c b/gdb/inferior.c index ec2f985..ab506f6 100644 --- a/gdb/inferior.c +++ b/gdb/inferior.c @@ -144,9 +144,9 @@ delete_thread_of_inferior (struct thread_info *tp, void *data) if (ptid_get_pid (tp->ptid) == arg->pid) { if (arg->silent) - delete_thread_silent (tp->ptid); + delete_thread_silent (tp); else - delete_thread (tp->ptid); + delete_thread (tp); } return 0; @@ -230,10 +230,9 @@ exit_inferior_1 (struct inferior *inftoex, int silent) } void -exit_inferior (int pid) +exit_inferior (inferior *inf) { - struct inferior *inf = find_inferior_pid (pid); - + int pid = inf->pid; exit_inferior_1 (inf, 0); } @@ -246,6 +245,12 @@ exit_inferior_silent (int pid) } void +exit_inferior_silent (inferior *inf) +{ + exit_inferior_1 (inf, 1); +} + +void exit_inferior_num_silent (int num) { struct inferior *inf = find_inferior_id (num); @@ -269,14 +274,6 @@ detach_inferior (inferior *inf) target_pid_to_str (pid_to_ptid (pid))); } -/* See inferior.h. */ - -void -detach_inferior (int pid) -{ - detach_inferior (find_inferior_pid (pid)); -} - void inferior_appeared (struct inferior *inf, int pid) { @@ -295,7 +292,7 @@ discard_all_inferiors (void) for (inf = inferior_list; inf; inf = inf->next) { if (inf->pid != 0) - exit_inferior_silent (inf->pid); + exit_inferior_silent (inf); } } @@ -372,52 +369,6 @@ iterate_over_inferiors (int (*callback) (struct inferior *, void *), } int -valid_gdb_inferior_id (int num) -{ - struct inferior *inf; - - for (inf = inferior_list; inf; inf = inf->next) - if (inf->num == num) - return 1; - - return 0; -} - -int -pid_to_gdb_inferior_id (int pid) -{ - struct inferior *inf; - - for (inf = inferior_list; inf; inf = inf->next) - if (inf->pid == pid) - return inf->num; - - return 0; -} - -int -gdb_inferior_id_to_pid (int num) -{ - struct inferior *inferior = find_inferior_id (num); - if (inferior) - return inferior->pid; - else - return -1; -} - -int -in_inferior_list (int pid) -{ - struct inferior *inf; - - for (inf = inferior_list; inf; inf = inf->next) - if (inf->pid == pid) - return 1; - - return 0; -} - -int have_inferiors (void) { struct inferior *inf; @@ -611,8 +562,6 @@ print_inferior (struct ui_out *uiout, const char *requested_inferiors) static void detach_inferior_command (const char *args, int from_tty) { - struct thread_info *tp; - if (!args || !*args) error (_("Requires argument (inferior id(s) to detach)")); @@ -621,27 +570,27 @@ detach_inferior_command (const char *args, int from_tty) { int num = parser.get_number (); - if (!valid_gdb_inferior_id (num)) + inferior *inf = find_inferior_id (num); + if (inf == NULL) { warning (_("Inferior ID %d not known."), num); continue; } - int pid = gdb_inferior_id_to_pid (num); - if (pid == 0) + if (inf->pid == 0) { warning (_("Inferior ID %d is not running."), num); continue; } - tp = any_thread_of_process (pid); - if (!tp) + thread_info *tp = any_thread_of_inferior (inf); + if (tp == NULL) { warning (_("Inferior ID %d has no threads."), num); continue; } - switch_to_thread (tp->ptid); + switch_to_thread (tp); detach_command (NULL, from_tty); } @@ -650,8 +599,6 @@ detach_inferior_command (const char *args, int from_tty) static void kill_inferior_command (const char *args, int from_tty) { - struct thread_info *tp; - if (!args || !*args) error (_("Requires argument (inferior id(s) to kill)")); @@ -660,27 +607,27 @@ kill_inferior_command (const char *args, int from_tty) { int num = parser.get_number (); - if (!valid_gdb_inferior_id (num)) + inferior *inf = find_inferior_id (num); + if (inf == NULL) { warning (_("Inferior ID %d not known."), num); continue; } - int pid = gdb_inferior_id_to_pid (num); - if (pid == 0) + if (inf->pid == 0) { warning (_("Inferior ID %d is not running."), num); continue; } - tp = any_thread_of_process (pid); - if (!tp) + thread_info *tp = any_thread_of_inferior (inf); + if (tp == NULL) { warning (_("Inferior ID %d has no threads."), num); continue; } - switch_to_thread (tp->ptid); + switch_to_thread (tp); target_kill (); } @@ -702,15 +649,13 @@ inferior_command (const char *args, int from_tty) if (inf->pid != 0) { - if (inf->pid != ptid_get_pid (inferior_ptid)) + if (inf != current_inferior ()) { - struct thread_info *tp; - - tp = any_thread_of_process (inf->pid); - if (!tp) + thread_info *tp = any_thread_of_inferior (inf); + if (tp == NULL) error (_("Inferior has no threads.")); - switch_to_thread (tp->ptid); + switch_to_thread (tp); } gdb::observers::user_selected_context_changed.notify @@ -721,7 +666,7 @@ inferior_command (const char *args, int from_tty) else { set_current_inferior (inf); - switch_to_thread (null_ptid); + switch_to_no_thread (); set_current_program_space (inf->pspace); gdb::observers::user_selected_context_changed.notify @@ -855,7 +800,7 @@ add_inferior_command (const char *args, int from_tty) symbols.q. */ set_current_program_space (inf->pspace); set_current_inferior (inf); - switch_to_thread (null_ptid); + switch_to_no_thread (); exec_file_attach (exec.get (), from_tty); symbol_file_add_main (exec.get (), add_flags); @@ -943,7 +888,7 @@ clone_inferior_command (const char *args, int from_tty) printf_filtered (_("Added inferior %d.\n"), inf->num); set_current_inferior (inf); - switch_to_thread (null_ptid); + switch_to_no_thread (); clone_program_space (pspace, orginf->pspace); } } diff --git a/gdb/inferior.h b/gdb/inferior.h index bd26c8a..3f4d7a5 100644 --- a/gdb/inferior.h +++ b/gdb/inferior.h @@ -32,6 +32,7 @@ struct terminal_info; struct target_desc_info; struct continuation; struct inferior; +struct thread_info; /* For bpstat. */ #include "breakpoint.h" @@ -176,7 +177,7 @@ extern void delete_longjmp_breakpoint_cleanup (void *arg); extern void detach_command (const char *, int); -extern void notice_new_inferior (ptid_t, int, int); +extern void notice_new_inferior (thread_info *, int, int); extern struct value *get_return_value (struct value *function, struct type *value_type); @@ -474,12 +475,9 @@ extern void delete_inferior (struct inferior *todel); /* Delete an existing inferior list entry, due to inferior detaching. */ extern void detach_inferior (inferior *inf); -/* Same as the above, but with the inferior specified by PID. */ -extern void detach_inferior (int pid); +extern void exit_inferior (inferior *inf); -extern void exit_inferior (int pid); - -extern void exit_inferior_silent (int pid); +extern void exit_inferior_silent (inferior *inf); extern void exit_inferior_num_silent (int num); @@ -488,21 +486,6 @@ extern void inferior_appeared (struct inferior *inf, int pid); /* Get rid of all inferiors. */ extern void discard_all_inferiors (void); -/* Translate the integer inferior id (GDB's homegrown id, not the system's) - into a "pid" (which may be overloaded with extra inferior information). */ -extern int gdb_inferior_id_to_pid (int); - -/* Translate a target 'pid' into the integer inferior id (GDB's - homegrown id, not the system's). */ -extern int pid_to_gdb_inferior_id (int pid); - -/* Boolean test for an already-known pid. */ -extern int in_inferior_list (int pid); - -/* Boolean test for an already-known inferior id (GDB's homegrown id, - not the system's). */ -extern int valid_gdb_inferior_id (int num); - /* Search function to lookup an inferior by target 'pid'. */ extern struct inferior *find_inferior_pid (int pid); diff --git a/gdb/infrun.c b/gdb/infrun.c index f455af2..9548f9c 100644 --- a/gdb/infrun.c +++ b/gdb/infrun.c @@ -383,8 +383,6 @@ static int stop_print_frame; static ptid_t target_last_wait_ptid; static struct target_waitstatus target_last_waitstatus; -static void context_switch (ptid_t ptid); - void init_thread_stepping_state (struct thread_info *tss); static const char follow_fork_mode_child[] = "child"; @@ -458,7 +456,7 @@ holding the child stopped. Try \"set detach-on-fork\" or \ if (has_vforked) { /* Keep breakpoints list in sync. */ - remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); + remove_breakpoints_inf (current_inferior ()); } if (print_inferior_events) @@ -689,14 +687,16 @@ follow_fork (void) /* Check if we switched over from WAIT_PTID, since the event was reported. */ - if (!ptid_equal (wait_ptid, minus_one_ptid) - && !ptid_equal (inferior_ptid, wait_ptid)) + if (wait_ptid != minus_one_ptid + && inferior_ptid != wait_ptid) { /* We did. Switch back to WAIT_PTID thread, to tell the target to follow it (in either direction). We'll afterwards refuse to resume, and inform the user what happened. */ - switch_to_thread (wait_ptid); + thread_info *wait_thread + = find_thread_ptid (wait_ptid); + switch_to_thread (wait_thread); should_resume = 0; } } @@ -767,7 +767,8 @@ follow_fork (void) /* If we followed the child, switch to it... */ if (follow_child) { - switch_to_thread (child); + thread_info *child_thr = find_thread_ptid (child); + switch_to_thread (child_thr); /* ... and preserve the stepping state, in case the user was stepping over the fork call. */ @@ -798,8 +799,6 @@ follow_fork (void) /* Reset breakpoints in the child as appropriate. */ follow_inferior_reset_breakpoints (); } - else - switch_to_thread (parent); } } break; @@ -865,9 +864,9 @@ proceed_after_vfork_done (struct thread_info *thread, { int pid = * (int *) arg; - if (ptid_get_pid (thread->ptid) == pid - && is_running (thread->ptid) - && !is_executing (thread->ptid) + if (thread->ptid.pid () == pid + && thread->state == THREAD_RUNNING + && !thread->executing && !thread->stop_requested && thread->suspend.stop_signal == GDB_SIGNAL_0) { @@ -876,7 +875,7 @@ proceed_after_vfork_done (struct thread_info *thread, "infrun: resuming vfork parent thread %s\n", target_pid_to_str (thread->ptid)); - switch_to_thread (thread->ptid); + switch_to_thread (thread); clear_proceed_status (0); proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); } @@ -939,8 +938,8 @@ handle_vfork_child_exec_or_exit (int exec) maybe_restore_thread.emplace (); /* We're letting loose of the parent. */ - tp = any_live_thread_of_process (inf->vfork_parent->pid); - switch_to_thread (tp->ptid); + tp = any_live_thread_of_inferior (inf->vfork_parent); + switch_to_thread (tp); /* We're about to detach from the parent, which implicitly removes breakpoints from its address space. There's a @@ -1130,7 +1129,7 @@ follow_exec (ptid_t ptid, char *exec_file_target) notifications. */ ALL_THREADS_SAFE (th, tmp) if (ptid_get_pid (th->ptid) == pid && !ptid_equal (th->ptid, ptid)) - delete_thread (th->ptid); + delete_thread (th); /* We also need to clear any left over stale state for the leader/event thread. E.g., if there was any step-resume @@ -1485,16 +1484,16 @@ struct displaced_step_inferior_state struct displaced_step_inferior_state *next; /* The process this displaced step state refers to. */ - int pid; + inferior *inf; /* True if preparing a displaced step ever failed. If so, we won't try displaced stepping for this inferior again. */ int failed_before; - /* If this is not null_ptid, this is the thread carrying out a + /* If this is not nullptr, this is the thread carrying out a displaced single-step in process PID. This thread's state will require fixing up once it has completed its step. */ - ptid_t step_ptid; + thread_info *step_thread; /* The architecture the thread had when we stepped it. */ struct gdbarch *step_gdbarch; @@ -1518,14 +1517,14 @@ static struct displaced_step_inferior_state *displaced_step_inferior_states; /* Get the displaced stepping state of process PID. */ static struct displaced_step_inferior_state * -get_displaced_stepping_state (int pid) +get_displaced_stepping_state (inferior *inf) { struct displaced_step_inferior_state *state; for (state = displaced_step_inferior_states; state != NULL; state = state->next) - if (state->pid == pid) + if (state->inf == inf) return state; return NULL; @@ -1542,7 +1541,7 @@ displaced_step_in_progress_any_inferior (void) for (state = displaced_step_inferior_states; state != NULL; state = state->next) - if (!ptid_equal (state->step_ptid, null_ptid)) + if (state->step_thread != nullptr) return 1; return 0; @@ -1552,26 +1551,26 @@ displaced_step_in_progress_any_inferior (void) step. */ static int -displaced_step_in_progress_thread (ptid_t ptid) +displaced_step_in_progress_thread (thread_info *thread) { struct displaced_step_inferior_state *displaced; - gdb_assert (!ptid_equal (ptid, null_ptid)); + gdb_assert (thread != NULL); - displaced = get_displaced_stepping_state (ptid_get_pid (ptid)); + displaced = get_displaced_stepping_state (thread->inf); - return (displaced != NULL && ptid_equal (displaced->step_ptid, ptid)); + return (displaced != NULL && displaced->step_thread == thread); } /* Return true if process PID has a thread doing a displaced step. */ static int -displaced_step_in_progress (int pid) +displaced_step_in_progress (inferior *inf) { struct displaced_step_inferior_state *displaced; - displaced = get_displaced_stepping_state (pid); - if (displaced != NULL && !ptid_equal (displaced->step_ptid, null_ptid)) + displaced = get_displaced_stepping_state (inf); + if (displaced != NULL && displaced->step_thread != nullptr) return 1; return 0; @@ -1582,18 +1581,18 @@ displaced_step_in_progress (int pid) entry, if it already exists. Never returns NULL. */ static struct displaced_step_inferior_state * -add_displaced_stepping_state (int pid) +add_displaced_stepping_state (inferior *inf) { struct displaced_step_inferior_state *state; for (state = displaced_step_inferior_states; state != NULL; state = state->next) - if (state->pid == pid) + if (state->inf == inf) return state; state = XCNEW (struct displaced_step_inferior_state); - state->pid = pid; + state->inf = inf; state->next = displaced_step_inferior_states; displaced_step_inferior_states = state; @@ -1608,11 +1607,12 @@ struct displaced_step_closure* get_displaced_step_closure_by_addr (CORE_ADDR addr) { struct displaced_step_inferior_state *displaced - = get_displaced_stepping_state (ptid_get_pid (inferior_ptid)); + = get_displaced_stepping_state (current_inferior ()); /* If checking the mode of displaced instruction in copy area. */ - if (displaced && !ptid_equal (displaced->step_ptid, null_ptid) - && (displaced->step_copy == addr)) + if (displaced != NULL + && displaced->step_thread != nullptr + && displaced->step_copy == addr) return displaced->step_closure; return NULL; @@ -1621,17 +1621,17 @@ get_displaced_step_closure_by_addr (CORE_ADDR addr) /* Remove the displaced stepping state of process PID. */ static void -remove_displaced_stepping_state (int pid) +remove_displaced_stepping_state (inferior *inf) { struct displaced_step_inferior_state *it, **prev_next_p; - gdb_assert (pid != 0); + gdb_assert (inf != nullptr); it = displaced_step_inferior_states; prev_next_p = &displaced_step_inferior_states; while (it) { - if (it->pid == pid) + if (it->inf == inf) { *prev_next_p = it->next; xfree (it); @@ -1646,7 +1646,7 @@ remove_displaced_stepping_state (int pid) static void infrun_inferior_exit (struct inferior *inf) { - remove_displaced_stepping_state (inf->pid); + remove_displaced_stepping_state (inf); } /* If ON, and the architecture supports it, GDB will use displaced @@ -1681,11 +1681,11 @@ show_can_use_displaced_stepping (struct ui_file *file, int from_tty, static int use_displaced_stepping (struct thread_info *tp) { - struct regcache *regcache = get_thread_regcache (tp->ptid); + struct regcache *regcache = get_thread_regcache (tp); struct gdbarch *gdbarch = regcache->arch (); struct displaced_step_inferior_state *displaced_state; - displaced_state = get_displaced_stepping_state (ptid_get_pid (tp->ptid)); + displaced_state = get_displaced_stepping_state (tp->inf); return (((can_use_displaced_stepping == AUTO_BOOLEAN_AUTO && target_is_non_stop_p ()) @@ -1701,7 +1701,7 @@ static void displaced_step_clear (struct displaced_step_inferior_state *displaced) { /* Indicate that there is no cleanup pending. */ - displaced->step_ptid = null_ptid; + displaced->step_thread = nullptr; delete displaced->step_closure; displaced->step_closure = NULL; @@ -1746,11 +1746,10 @@ displaced_step_dump_bytes (struct ui_file *file, if this instruction can't be displaced stepped. */ static int -displaced_step_prepare_throw (ptid_t ptid) +displaced_step_prepare_throw (thread_info *tp) { struct cleanup *ignore_cleanups; - struct thread_info *tp = find_thread_ptid (ptid); - struct regcache *regcache = get_thread_regcache (ptid); + regcache *regcache = get_thread_regcache (tp); struct gdbarch *gdbarch = regcache->arch (); const address_space *aspace = regcache->aspace (); CORE_ADDR original, copy; @@ -1775,9 +1774,9 @@ displaced_step_prepare_throw (ptid_t ptid) /* We have to displaced step one thread at a time, as we only have access to a single scratch space per inferior. */ - displaced = add_displaced_stepping_state (ptid_get_pid (ptid)); + displaced = add_displaced_stepping_state (tp->inf); - if (!ptid_equal (displaced->step_ptid, null_ptid)) + if (displaced->step_thread != nullptr) { /* Already waiting for a displaced step to finish. Defer this request and place in queue. */ @@ -1785,7 +1784,7 @@ displaced_step_prepare_throw (ptid_t ptid) if (debug_displaced) fprintf_unfiltered (gdb_stdlog, "displaced: deferring step of %s\n", - target_pid_to_str (ptid)); + target_pid_to_str (tp->ptid)); thread_step_over_chain_enqueue (tp); return 0; @@ -1795,13 +1794,14 @@ displaced_step_prepare_throw (ptid_t ptid) if (debug_displaced) fprintf_unfiltered (gdb_stdlog, "displaced: stepping %s now\n", - target_pid_to_str (ptid)); + target_pid_to_str (tp->ptid)); } displaced_step_clear (displaced); - scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); - inferior_ptid = ptid; + scoped_restore_current_thread restore_thread; + + switch_to_thread (tp); original = regcache_read_pc (regcache); @@ -1861,7 +1861,7 @@ displaced_step_prepare_throw (ptid_t ptid) /* Save the information we need to fix things up if the step succeeds. */ - displaced->step_ptid = ptid; + displaced->step_thread = tp; displaced->step_gdbarch = gdbarch; displaced->step_closure = closure; displaced->step_original = original; @@ -1885,13 +1885,13 @@ displaced_step_prepare_throw (ptid_t ptid) attempts at displaced stepping if we get a memory error. */ static int -displaced_step_prepare (ptid_t ptid) +displaced_step_prepare (thread_info *thread) { int prepared = -1; TRY { - prepared = displaced_step_prepare_throw (ptid); + prepared = displaced_step_prepare_throw (thread); } CATCH (ex, RETURN_MASK_ERROR) { @@ -1918,7 +1918,7 @@ displaced_step_prepare (ptid_t ptid) /* Disable further displaced stepping attempts. */ displaced_state - = get_displaced_stepping_state (ptid_get_pid (ptid)); + = get_displaced_stepping_state (thread->inf); displaced_state->failed_before = 1; } END_CATCH @@ -1960,30 +1960,29 @@ displaced_step_restore (struct displaced_step_inferior_state *displaced, -1. If the thread wasn't displaced stepping, return 0. */ static int -displaced_step_fixup (ptid_t event_ptid, enum gdb_signal signal) +displaced_step_fixup (thread_info *event_thread, enum gdb_signal signal) { struct cleanup *old_cleanups; struct displaced_step_inferior_state *displaced - = get_displaced_stepping_state (ptid_get_pid (event_ptid)); + = get_displaced_stepping_state (event_thread->inf); int ret; /* Was any thread of this process doing a displaced step? */ if (displaced == NULL) return 0; - /* Was this event for the pid we displaced? */ - if (ptid_equal (displaced->step_ptid, null_ptid) - || ! ptid_equal (displaced->step_ptid, event_ptid)) + /* Was this event for the thread we displaced? */ + if (displaced->step_thread != event_thread) return 0; old_cleanups = make_cleanup (displaced_step_clear_cleanup, displaced); - displaced_step_restore (displaced, displaced->step_ptid); + displaced_step_restore (displaced, displaced->step_thread->ptid); /* Fixup may need to read memory/registers. Switch to the thread that we're fixing up. Also, target_stopped_by_watchpoint checks the current thread. */ - switch_to_thread (event_ptid); + switch_to_thread (event_thread); /* Did the instruction complete successfully? */ if (signal == GDB_SIGNAL_TRAP @@ -1996,14 +1995,14 @@ displaced_step_fixup (ptid_t event_ptid, enum gdb_signal signal) displaced->step_closure, displaced->step_original, displaced->step_copy, - get_thread_regcache (displaced->step_ptid)); + get_thread_regcache (displaced->step_thread)); ret = 1; } else { /* Since the instruction didn't complete, all we can do is relocate the PC. */ - struct regcache *regcache = get_thread_regcache (event_ptid); + struct regcache *regcache = get_thread_regcache (event_thread); CORE_ADDR pc = regcache_read_pc (regcache); pc = displaced->step_original + (pc - displaced->step_copy); @@ -2013,7 +2012,7 @@ displaced_step_fixup (ptid_t event_ptid, enum gdb_signal signal) do_cleanups (old_cleanups); - displaced->step_ptid = null_ptid; + displaced->step_thread = nullptr; return ret; } @@ -2082,7 +2081,7 @@ start_step_over (void) /* If this inferior already has a displaced step in process, don't start a new one. */ - if (displaced_step_in_progress (ptid_get_pid (tp->ptid))) + if (displaced_step_in_progress (tp->inf)) continue; step_what = thread_still_needs_step_over (tp); @@ -2132,7 +2131,7 @@ start_step_over (void) if (!target_is_non_stop_p () && !step_what) continue; - switch_to_thread (tp->ptid); + switch_to_thread (tp); reset_ecs (ecs, tp); keep_going_pass_signal (ecs); @@ -2179,14 +2178,6 @@ infrun_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid) if (ptid_equal (inferior_ptid, old_ptid)) inferior_ptid = new_ptid; - - for (displaced = displaced_step_inferior_states; - displaced; - displaced = displaced->next) - { - if (ptid_equal (displaced->step_ptid, old_ptid)) - displaced->step_ptid = new_ptid; - } } @@ -2344,7 +2335,7 @@ do_target_resume (ptid_t resume_ptid, int step, enum gdb_signal sig) return to the scratch pad area, which would no longer be valid. */ if (step_over_info_valid_p () - || displaced_step_in_progress (ptid_get_pid (tp->ptid))) + || displaced_step_in_progress (tp->inf)) target_pass_signals (0, NULL); else target_pass_signals ((int) GDB_SIGNAL_LAST, signal_pass); @@ -2549,7 +2540,7 @@ resume_1 (enum gdb_signal sig) && sig == GDB_SIGNAL_0 && !current_inferior ()->waiting_for_vfork_done) { - int prepared = displaced_step_prepare (inferior_ptid); + int prepared = displaced_step_prepare (tp); if (prepared == 0) { @@ -2580,9 +2571,9 @@ resume_1 (enum gdb_signal sig) /* Update pc to reflect the new address from which we will execute instructions due to displaced stepping. */ - pc = regcache_read_pc (get_thread_regcache (inferior_ptid)); + pc = regcache_read_pc (get_thread_regcache (tp)); - displaced = get_displaced_stepping_state (ptid_get_pid (inferior_ptid)); + displaced = get_displaced_stepping_state (tp->inf); step = gdbarch_displaced_step_hw_singlestep (gdbarch, displaced->step_closure); } @@ -2711,7 +2702,7 @@ resume_1 (enum gdb_signal sig) && use_displaced_stepping (tp) && !step_over_info_valid_p ()) { - struct regcache *resume_regcache = get_thread_regcache (tp->ptid); + struct regcache *resume_regcache = get_thread_regcache (tp); struct gdbarch *resume_gdbarch = resume_regcache->arch (); CORE_ADDR actual_pc = regcache_read_pc (resume_regcache); gdb_byte buf[4]; @@ -2919,7 +2910,7 @@ thread_still_needs_step_over_bp (struct thread_info *tp) { if (tp->stepping_over_breakpoint) { - struct regcache *regcache = get_thread_regcache (tp->ptid); + struct regcache *regcache = get_thread_regcache (tp); if (breakpoint_here_p (regcache->aspace (), regcache_read_pc (regcache)) @@ -3186,7 +3177,7 @@ proceed (CORE_ADDR addr, enum gdb_signal siggnal) target_pid_to_str (tp->ptid)); reset_ecs (ecs, tp); - switch_to_thread (tp->ptid); + switch_to_thread (tp); keep_going_pass_signal (ecs); if (!ecs->wait_some_more) error (_("Command aborted.")); @@ -3196,7 +3187,7 @@ proceed (CORE_ADDR addr, enum gdb_signal siggnal) { /* The thread wasn't started, and isn't queued, run it now. */ reset_ecs (ecs, tp); - switch_to_thread (tp->ptid); + switch_to_thread (tp); keep_going_pass_signal (ecs); if (!ecs->wait_some_more) error (_("Command aborted.")); @@ -3524,7 +3515,7 @@ do_target_wait (ptid_t ptid, struct target_waitstatus *status, int options) && (tp->suspend.stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT || tp->suspend.stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT)) { - struct regcache *regcache = get_thread_regcache (tp->ptid); + struct regcache *regcache = get_thread_regcache (tp); struct gdbarch *gdbarch = regcache->arch (); CORE_ADDR pc; int discard = 0; @@ -3587,7 +3578,7 @@ do_target_wait (ptid_t ptid, struct target_waitstatus *status, int options) struct gdbarch *gdbarch; int decr_pc; - regcache = get_thread_regcache (tp->ptid); + regcache = get_thread_regcache (tp); gdbarch = regcache->arch (); decr_pc = gdbarch_decr_pc_after_break (gdbarch); @@ -3631,13 +3622,12 @@ prepare_for_detach (void) { struct inferior *inf = current_inferior (); ptid_t pid_ptid = pid_to_ptid (inf->pid); - struct displaced_step_inferior_state *displaced; - displaced = get_displaced_stepping_state (inf->pid); + displaced_step_inferior_state *displaced = get_displaced_stepping_state (inf); /* Is any thread of this process displaced stepping? If not, there's nothing else to do. */ - if (displaced == NULL || ptid_equal (displaced->step_ptid, null_ptid)) + if (displaced == NULL || displaced->step_thread == nullptr) return; if (debug_infrun) @@ -3646,7 +3636,7 @@ prepare_for_detach (void) scoped_restore restore_detaching = make_scoped_restore (&inf->detaching, true); - while (!ptid_equal (displaced->step_ptid, null_ptid)) + while (displaced->step_thread != nullptr) { struct execution_control_state ecss; struct execution_control_state *ecs; @@ -3798,12 +3788,12 @@ clean_up_just_stopped_threads_fsms (struct execution_control_state *ecs) if (thr == ecs->event_thread) continue; - switch_to_thread (thr->ptid); + switch_to_thread (thr); thread_fsm_clean_up (thr->thread_fsm, thr); } if (ecs->event_thread != NULL) - switch_to_thread (ecs->event_thread->ptid); + switch_to_thread (ecs->event_thread); } } @@ -3990,8 +3980,8 @@ fetch_inferior_event (void *client_data) if (cmd_done && exec_done_display_p - && (ptid_equal (inferior_ptid, null_ptid) - || !is_running (inferior_ptid))) + && (inferior_ptid == null_ptid + || inferior_thread ()->state != THREAD_RUNNING)) printf_unfiltered (_("completed.\n")); } @@ -4049,17 +4039,19 @@ nullify_last_target_wait_ptid (void) /* Switch thread contexts. */ static void -context_switch (ptid_t ptid) +context_switch (execution_control_state *ecs) { - if (debug_infrun && !ptid_equal (ptid, inferior_ptid)) + if (debug_infrun + && ecs->ptid != inferior_ptid + && ecs->event_thread != inferior_thread ()) { fprintf_unfiltered (gdb_stdlog, "infrun: Switching context from %s ", target_pid_to_str (inferior_ptid)); fprintf_unfiltered (gdb_stdlog, "to %s\n", - target_pid_to_str (ptid)); + target_pid_to_str (ecs->ptid)); } - switch_to_thread (ptid); + switch_to_thread (ecs->event_thread); } /* If the target can't tell whether we've hit breakpoints @@ -4145,7 +4137,7 @@ adjust_pc_after_break (struct thread_info *thread, /* If this target does not decrement the PC after breakpoints, then we have nothing to do. */ - regcache = get_thread_regcache (thread->ptid); + regcache = get_thread_regcache (thread); gdbarch = regcache->arch (); decr_pc = gdbarch_decr_pc_after_break (gdbarch); @@ -4253,10 +4245,9 @@ handle_syscall_event (struct execution_control_state *ecs) struct regcache *regcache; int syscall_number; - if (!ptid_equal (ecs->ptid, inferior_ptid)) - context_switch (ecs->ptid); + context_switch (ecs); - regcache = get_thread_regcache (ecs->ptid); + regcache = get_thread_regcache (ecs->event_thread); syscall_number = ecs->ws.value.syscall_number; stop_pc = regcache_read_pc (regcache); @@ -4269,7 +4260,7 @@ handle_syscall_event (struct execution_control_state *ecs) ecs->event_thread->control.stop_bpstat = bpstat_stop_status (regcache->aspace (), - stop_pc, ecs->ptid, &ecs->ws); + stop_pc, ecs->event_thread, &ecs->ws); if (handle_stop_requested (ecs)) return 0; @@ -4313,12 +4304,12 @@ fill_in_stop_func (struct gdbarch *gdbarch, } -/* Return the STOP_SOON field of the inferior pointed at by PTID. */ +/* Return the STOP_SOON field of the inferior pointed at by ECS. */ static enum stop_kind -get_inferior_stop_soon (ptid_t ptid) +get_inferior_stop_soon (execution_control_state *ecs) { - struct inferior *inf = find_inferior_ptid (ptid); + struct inferior *inf = find_inferior_ptid (ecs->ptid); gdb_assert (inf != NULL); return inf->control.stop_soon; @@ -4371,23 +4362,11 @@ THREAD_STOPPED_BY (sw_breakpoint) /* Generate thread_stopped_by_hw_breakpoint. */ THREAD_STOPPED_BY (hw_breakpoint) -/* Cleanups that switches to the PTID pointed at by PTID_P. */ - -static void -switch_to_thread_cleanup (void *ptid_p) -{ - ptid_t ptid = *(ptid_t *) ptid_p; - - switch_to_thread (ptid); -} - /* Save the thread's event and stop reason to process it later. */ static void save_waitstatus (struct thread_info *tp, struct target_waitstatus *ws) { - struct regcache *regcache; - if (debug_infrun) { std::string statstr = target_waitstatus_to_string (ws); @@ -4404,7 +4383,7 @@ save_waitstatus (struct thread_info *tp, struct target_waitstatus *ws) tp->suspend.waitstatus = *ws; tp->suspend.waitstatus_pending_p = 1; - regcache = get_thread_regcache (tp->ptid); + struct regcache *regcache = get_thread_regcache (tp); const address_space *aspace = regcache->aspace (); if (ws->kind == TARGET_WAITKIND_STOPPED @@ -4470,7 +4449,6 @@ stop_all_threads (void) /* We may need multiple passes to discover all threads. */ int pass; int iterations = 0; - ptid_t entry_ptid; struct cleanup *old_chain; gdb_assert (target_is_non_stop_p ()); @@ -4478,11 +4456,10 @@ stop_all_threads (void) if (debug_infrun) fprintf_unfiltered (gdb_stdlog, "infrun: stop_all_threads\n"); - entry_ptid = inferior_ptid; - old_chain = make_cleanup (switch_to_thread_cleanup, &entry_ptid); + scoped_restore_current_thread restore_thread; target_thread_events (1); - make_cleanup (disable_thread_events, NULL); + old_chain = make_cleanup (disable_thread_events, NULL); /* Request threads to stop, and then wait for the stops. Because threads we already know about can spawn more threads while we're @@ -4557,6 +4534,7 @@ stop_all_threads (void) pass = -1; event_ptid = wait_one (&ws); + if (ws.kind == TARGET_WAITKIND_NO_RESUMED) { /* All resumed threads exited. */ @@ -4577,7 +4555,7 @@ stop_all_threads (void) } else { - struct inferior *inf; + inferior *inf; t = find_thread_ptid (event_ptid); if (t == NULL) @@ -4605,7 +4583,7 @@ stop_all_threads (void) t->suspend.waitstatus.kind = TARGET_WAITKIND_IGNORE; t->suspend.waitstatus_pending_p = 0; - if (displaced_step_fixup (t->ptid, GDB_SIGNAL_0) < 0) + if (displaced_step_fixup (t, GDB_SIGNAL_0) < 0) { /* Add it back to the step-over queue. */ if (debug_infrun) @@ -4644,14 +4622,14 @@ stop_all_threads (void) sig = (ws.kind == TARGET_WAITKIND_STOPPED ? ws.value.sig : GDB_SIGNAL_0); - if (displaced_step_fixup (t->ptid, sig) < 0) + if (displaced_step_fixup (t, sig) < 0) { /* Add it back to the step-over queue. */ t->control.trap_expected = 0; thread_step_over_chain_enqueue (t); } - regcache = get_thread_regcache (t->ptid); + regcache = get_thread_regcache (t); t->suspend.stop_pc = regcache_read_pc (regcache); if (debug_infrun) @@ -4770,7 +4748,7 @@ handle_no_resumed (struct execution_control_state *ecs) if (inf->pid == 0) continue; - thread = any_live_thread_of_process (inf->pid); + thread_info *thread = any_live_thread_of_inferior (inf); if (thread == NULL) { if (debug_infrun) @@ -4887,7 +4865,7 @@ handle_inferior_event_1 (struct execution_control_state *ecs) || ecs->ws.value.sig == GDB_SIGNAL_SEGV || ecs->ws.value.sig == GDB_SIGNAL_EMT)) { - struct regcache *regcache = get_thread_regcache (ecs->ptid); + struct regcache *regcache = get_thread_regcache (ecs->event_thread); if (breakpoint_inserted_here_p (regcache->aspace (), regcache_read_pc (regcache))) @@ -4940,8 +4918,7 @@ handle_inferior_event_1 (struct execution_control_state *ecs) case TARGET_WAITKIND_LOADED: if (debug_infrun) fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_LOADED\n"); - if (!ptid_equal (ecs->ptid, inferior_ptid)) - context_switch (ecs->ptid); + context_switch (ecs); /* Ignore gracefully during startup of the inferior, as it might be the shell which has just loaded some objects, otherwise add the symbols for the newly loaded objects. Also ignore at @@ -4949,18 +4926,18 @@ handle_inferior_event_1 (struct execution_control_state *ecs) the full list of libraries once the connection is established. */ - stop_soon = get_inferior_stop_soon (ecs->ptid); + stop_soon = get_inferior_stop_soon (ecs); if (stop_soon == NO_STOP_QUIETLY) { struct regcache *regcache; - regcache = get_thread_regcache (ecs->ptid); + regcache = get_thread_regcache (ecs->event_thread); handle_solib_event (); ecs->event_thread->control.stop_bpstat = bpstat_stop_status (regcache->aspace (), - stop_pc, ecs->ptid, &ecs->ws); + stop_pc, ecs->event_thread, &ecs->ws); if (handle_stop_requested (ecs)) return; @@ -5021,8 +4998,7 @@ handle_inferior_event_1 (struct execution_control_state *ecs) fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_SPURIOUS\n"); if (handle_stop_requested (ecs)) return; - if (!ptid_equal (ecs->ptid, inferior_ptid)) - context_switch (ecs->ptid); + context_switch (ecs); resume (GDB_SIGNAL_0); prepare_to_wait (ecs); return; @@ -5032,8 +5008,7 @@ handle_inferior_event_1 (struct execution_control_state *ecs) fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_THREAD_CREATED\n"); if (handle_stop_requested (ecs)) return; - if (!ptid_equal (ecs->ptid, inferior_ptid)) - context_switch (ecs->ptid); + context_switch (ecs); if (!switch_back_to_stepped_thread (ecs)) keep_going (ecs); return; @@ -5077,8 +5052,7 @@ handle_inferior_event_1 (struct execution_control_state *ecs) } else { - struct regcache *regcache = get_thread_regcache (ecs->ptid); - struct gdbarch *gdbarch = regcache->arch (); + struct gdbarch *gdbarch = current_inferior ()->gdbarch; if (gdbarch_gdb_signal_to_target_p (gdbarch)) { @@ -5125,12 +5099,12 @@ Cannot fill $_exitsignal with the correct signal number.\n")); /* Check whether the inferior is displaced stepping. */ { - struct regcache *regcache = get_thread_regcache (ecs->ptid); + struct regcache *regcache = get_thread_regcache (ecs->event_thread); struct gdbarch *gdbarch = regcache->arch (); /* If checking displaced stepping is supported, and thread ecs->ptid is displaced stepping. */ - if (displaced_step_in_progress_thread (ecs->ptid)) + if (displaced_step_in_progress_thread (ecs->event_thread)) { struct inferior *parent_inf = find_inferior_ptid (ecs->ptid); @@ -5142,7 +5116,7 @@ Cannot fill $_exitsignal with the correct signal number.\n")); has been done. Perform cleanup for parent process here. Note that this operation also cleans up the child process for vfork, because their pages are shared. */ - displaced_step_fixup (ecs->ptid, GDB_SIGNAL_TRAP); + displaced_step_fixup (ecs->event_thread, GDB_SIGNAL_TRAP); /* Start a new step-over in another thread if there's one that needs it. */ start_step_over (); @@ -5150,7 +5124,7 @@ Cannot fill $_exitsignal with the correct signal number.\n")); if (ecs->ws.kind == TARGET_WAITKIND_FORKED) { struct displaced_step_inferior_state *displaced - = get_displaced_stepping_state (ptid_get_pid (ecs->ptid)); + = get_displaced_stepping_state (parent_inf); /* Restore scratch pad for child process. */ displaced_step_restore (displaced, ecs->ws.value.related_pid); @@ -5181,8 +5155,7 @@ Cannot fill $_exitsignal with the correct signal number.\n")); } } - if (!ptid_equal (ecs->ptid, inferior_ptid)) - context_switch (ecs->ptid); + context_switch (ecs); /* Immediately detach breakpoints from the child before there's any chance of letting the user delete breakpoints from the @@ -5210,11 +5183,11 @@ Cannot fill $_exitsignal with the correct signal number.\n")); and not immediately. */ ecs->event_thread->pending_follow = ecs->ws; - stop_pc = regcache_read_pc (get_thread_regcache (ecs->ptid)); + stop_pc = regcache_read_pc (get_thread_regcache (ecs->event_thread)); ecs->event_thread->control.stop_bpstat = bpstat_stop_status (get_current_regcache ()->aspace (), - stop_pc, ecs->ptid, &ecs->ws); + stop_pc, ecs->event_thread, &ecs->ws); if (handle_stop_requested (ecs)) return; @@ -5225,8 +5198,6 @@ Cannot fill $_exitsignal with the correct signal number.\n")); watchpoints, for example, always appear in the bpstat. */ if (!bpstat_causes_stop (ecs->event_thread->control.stop_bpstat)) { - ptid_t parent; - ptid_t child; int should_resume; int follow_child = (follow_fork_mode_string == follow_fork_mode_child); @@ -5235,19 +5206,19 @@ Cannot fill $_exitsignal with the correct signal number.\n")); should_resume = follow_fork (); - parent = ecs->ptid; - child = ecs->ws.value.related_pid; + thread_info *parent = ecs->event_thread; + thread_info *child = find_thread_ptid (ecs->ws.value.related_pid); /* At this point, the parent is marked running, and the child is marked stopped. */ /* If not resuming the parent, mark it stopped. */ if (follow_child && !detach_fork && !non_stop && !sched_multi) - set_running (parent, 0); + parent->set_running (false); /* If resuming the child, mark it running. */ if (follow_child || (!detach_fork && (non_stop || sched_multi))) - set_running (child, 1); + child->set_running (true); /* In non-stop mode, also resume the other branch. */ if (!detach_fork && (non_stop @@ -5288,8 +5259,7 @@ Cannot fill $_exitsignal with the correct signal number.\n")); fprintf_unfiltered (gdb_stdlog, "infrun: TARGET_WAITKIND_VFORK_DONE\n"); - if (!ptid_equal (ecs->ptid, inferior_ptid)) - context_switch (ecs->ptid); + context_switch (ecs); current_inferior ()->waiting_for_vfork_done = 0; current_inferior ()->pspace->breakpoints_not_allowed = 0; @@ -5309,8 +5279,7 @@ Cannot fill $_exitsignal with the correct signal number.\n")); /* Note we can't read registers yet (the stop_pc), because we don't yet know the inferior's post-exec architecture. 'stop_pc' is explicitly read below instead. */ - if (!ptid_equal (ecs->ptid, inferior_ptid)) - switch_to_thread_no_regs (ecs->event_thread); + switch_to_thread_no_regs (ecs->event_thread); /* Do whatever is necessary to the parent branch of the vfork. */ handle_vfork_child_exec_or_exit (1); @@ -5320,7 +5289,7 @@ Cannot fill $_exitsignal with the correct signal number.\n")); stop. */ follow_exec (inferior_ptid, ecs->ws.value.execd_pathname); - stop_pc = regcache_read_pc (get_thread_regcache (ecs->ptid)); + stop_pc = regcache_read_pc (get_thread_regcache (ecs->event_thread)); /* In follow_exec we may have deleted the original thread and created a new one. Make sure that the event thread is the @@ -5329,7 +5298,7 @@ Cannot fill $_exitsignal with the correct signal number.\n")); ecs->event_thread->control.stop_bpstat = bpstat_stop_status (get_current_regcache ()->aspace (), - stop_pc, ecs->ptid, &ecs->ws); + stop_pc, ecs->event_thread, &ecs->ws); /* Note that this may be referenced from inside bpstat_stop_status above, through inferior_has_execd. */ @@ -5385,13 +5354,12 @@ Cannot fill $_exitsignal with the correct signal number.\n")); /* Reverse execution: target ran out of history info. */ /* Switch to the stopped thread. */ - if (!ptid_equal (ecs->ptid, inferior_ptid)) - context_switch (ecs->ptid); + context_switch (ecs); if (debug_infrun) fprintf_unfiltered (gdb_stdlog, "infrun: stopped\n"); delete_just_stopped_threads_single_step_breakpoints (); - stop_pc = regcache_read_pc (get_thread_regcache (inferior_ptid)); + stop_pc = regcache_read_pc (get_thread_regcache (inferior_thread ())); if (handle_stop_requested (ecs)) return; @@ -5516,7 +5484,7 @@ restart_threads (struct thread_info *event_thread) "infrun: restart threads: [%s] continuing\n", target_pid_to_str (tp->ptid)); reset_ecs (ecs, tp); - switch_to_thread (tp->ptid); + switch_to_thread (tp); keep_going_pass_signal (ecs); } } @@ -5544,7 +5512,7 @@ finish_step_over (struct execution_control_state *ecs) { int had_step_over_info; - displaced_step_fixup (ecs->ptid, + displaced_step_fixup (ecs->event_thread, ecs->event_thread->suspend.stop_signal); had_step_over_info = step_over_info_valid_p (); @@ -5582,7 +5550,7 @@ finish_step_over (struct execution_control_state *ecs) another thread has a pending event for this breakpoint too, we'd discard its event (because the breakpoint that originally caused the event was no longer inserted). */ - context_switch (ecs->ptid); + context_switch (ecs); insert_breakpoints (); restart_threads (ecs->event_thread); @@ -5625,7 +5593,7 @@ finish_step_over (struct execution_control_state *ecs) gdb_assert (!tp->executing); - regcache = get_thread_regcache (tp->ptid); + regcache = get_thread_regcache (tp); tp->suspend.stop_pc = regcache_read_pc (regcache); if (debug_infrun) @@ -5683,11 +5651,11 @@ handle_signal_stop (struct execution_control_state *ecs) && ecs->event_thread->suspend.stop_signal == GDB_SIGNAL_TRAP) ecs->event_thread->suspend.stop_signal = GDB_SIGNAL_0; - stop_pc = regcache_read_pc (get_thread_regcache (ecs->ptid)); + stop_pc = regcache_read_pc (get_thread_regcache (ecs->event_thread)); if (debug_infrun) { - struct regcache *regcache = get_thread_regcache (ecs->ptid); + struct regcache *regcache = get_thread_regcache (ecs->event_thread); struct gdbarch *gdbarch = regcache->arch (); scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); @@ -5713,11 +5681,10 @@ handle_signal_stop (struct execution_control_state *ecs) /* This is originated from start_remote(), start_inferior() and shared libraries hook functions. */ - stop_soon = get_inferior_stop_soon (ecs->ptid); + stop_soon = get_inferior_stop_soon (ecs); if (stop_soon == STOP_QUIETLY || stop_soon == STOP_QUIETLY_REMOTE) { - if (!ptid_equal (ecs->ptid, inferior_ptid)) - context_switch (ecs->ptid); + context_switch (ecs); if (debug_infrun) fprintf_unfiltered (gdb_stdlog, "infrun: quietly stopped\n"); stop_print_frame = 1; @@ -5763,10 +5730,10 @@ handle_signal_stop (struct execution_control_state *ecs) if (debug_infrun) fprintf_unfiltered (gdb_stdlog, "infrun: context switch\n"); - context_switch (ecs->ptid); + context_switch (ecs); if (deprecated_context_hook) - deprecated_context_hook (ptid_to_global_thread_id (ecs->ptid)); + deprecated_context_hook (ecs->event_thread->global_num); } /* At this point, get hold of the now-current thread's frame. */ @@ -5779,7 +5746,7 @@ handle_signal_stop (struct execution_control_state *ecs) struct regcache *regcache; CORE_ADDR pc; - regcache = get_thread_regcache (ecs->ptid); + regcache = get_thread_regcache (ecs->event_thread); const address_space *aspace = regcache->aspace (); pc = regcache_read_pc (regcache); @@ -5873,8 +5840,8 @@ handle_signal_stop (struct execution_control_state *ecs) inline function call sites). */ if (ecs->event_thread->control.step_range_end != 1) { - const address_space *aspace = - get_thread_regcache (ecs->ptid)->aspace (); + const address_space *aspace + = get_thread_regcache (ecs->event_thread)->aspace (); /* skip_inline_frames is expensive, so we avoid it if we can determine that the address is one where functions cannot have @@ -5899,7 +5866,7 @@ handle_signal_stop (struct execution_control_state *ecs) &ecs->ws))) { stop_chain = build_bpstat_chain (aspace, stop_pc, &ecs->ws); - skip_inline_frames (ecs->ptid, stop_chain); + skip_inline_frames (ecs->event_thread, stop_chain); /* Re-fetch current thread's frame in case that invalidated the frame cache. */ @@ -5948,7 +5915,7 @@ handle_signal_stop (struct execution_control_state *ecs) handles this event. */ ecs->event_thread->control.stop_bpstat = bpstat_stop_status (get_current_regcache ()->aspace (), - stop_pc, ecs->ptid, &ecs->ws, stop_chain); + stop_pc, ecs->event_thread, &ecs->ws, stop_chain); /* Following in case break condition called a function. */ @@ -6007,7 +5974,7 @@ handle_signal_stop (struct execution_control_state *ecs) /* Re-adjust PC to what the program would see if GDB was not debugging it. */ - regcache = get_thread_regcache (ecs->event_thread->ptid); + regcache = get_thread_regcache (ecs->event_thread); decr_pc = gdbarch_decr_pc_after_break (gdbarch); if (decr_pc != 0) { @@ -6921,7 +6888,7 @@ process_event_stop_test (struct execution_control_state *ecs) if (frame_id_eq (get_frame_id (get_current_frame ()), ecs->event_thread->control.step_frame_id) - && inline_skipped_frames (ecs->ptid)) + && inline_skipped_frames (ecs->event_thread)) { if (debug_infrun) fprintf_unfiltered (gdb_stdlog, @@ -6938,7 +6905,7 @@ process_event_stop_test (struct execution_control_state *ecs) if (call_sal.line == ecs->event_thread->current_line && call_sal.symtab == ecs->event_thread->current_symtab) - step_into_inline_frame (ecs->ptid); + step_into_inline_frame (ecs->event_thread); end_stepping_range (ecs); return; @@ -7195,15 +7162,14 @@ keep_going_stepped_thread (struct thread_info *tp) stepping thread is still alive. For that reason, we need to synchronously query the target now. */ - if (is_exited (tp->ptid) - || !target_thread_alive (tp->ptid)) + if (tp->state == THREAD_EXITED || !target_thread_alive (tp->ptid)) { if (debug_infrun) fprintf_unfiltered (gdb_stdlog, "infrun: not resuming previously " "stepped thread, it has vanished\n"); - delete_thread (tp->ptid); + delete_thread (tp); return 0; } @@ -7212,9 +7178,9 @@ keep_going_stepped_thread (struct thread_info *tp) "infrun: resuming previously stepped thread\n"); reset_ecs (ecs, tp); - switch_to_thread (tp->ptid); + switch_to_thread (tp); - stop_pc = regcache_read_pc (get_thread_regcache (tp->ptid)); + stop_pc = regcache_read_pc (get_thread_regcache (tp)); frame = get_current_frame (); /* If the PC of the thread we were trying to single-step has @@ -7685,7 +7651,7 @@ keep_going_pass_signal (struct execution_control_state *ecs) /* Save the pc before execution, to compare with pc after stop. */ ecs->event_thread->prev_pc - = regcache_read_pc (get_thread_regcache (ecs->ptid)); + = regcache_read_pc (get_thread_regcache (ecs->event_thread)); if (ecs->event_thread->control.trap_expected) { diff --git a/gdb/inline-frame.c b/gdb/inline-frame.c index 3edd5b2..896b000 100644 --- a/gdb/inline-frame.c +++ b/gdb/inline-frame.c @@ -24,6 +24,7 @@ #include "block.h" #include "frame-unwind.h" #include "inferior.h" +#include "gdbthread.h" #include "regcache.h" #include "symtab.h" #include "vec.h" @@ -36,16 +37,15 @@ keep our own list. */ struct inline_state { - inline_state (ptid_t ptid_, int skipped_frames_, CORE_ADDR saved_pc_, + inline_state (thread_info *thread_, int skipped_frames_, CORE_ADDR saved_pc_, symbol *skipped_symbol_) - : ptid (ptid_), skipped_frames (skipped_frames_), saved_pc (saved_pc_), + : thread (thread_), skipped_frames (skipped_frames_), saved_pc (saved_pc_), skipped_symbol (skipped_symbol_) {} /* The thread this data relates to. It should be a currently - stopped thread; we assume thread IDs never change while the - thread is stopped. */ - ptid_t ptid; + stopped thread. */ + thread_info *thread; /* The number of inlined functions we are skipping. Each of these functions can be stepped in to. */ @@ -65,23 +65,23 @@ struct inline_state static std::vector<inline_state> inline_states; -/* Locate saved inlined frame state for PTID, if it exists - and is valid. */ +/* Locate saved inlined frame state for THREAD, if it exists and is + valid. */ static struct inline_state * -find_inline_frame_state (ptid_t ptid) +find_inline_frame_state (thread_info *thread) { auto state_it = std::find_if (inline_states.begin (), inline_states.end (), - [&ptid] (const inline_state &state) + [thread] (const inline_state &state) { - return ptid == state.ptid; + return state.thread == thread; }); if (state_it == inline_states.end ()) return nullptr; inline_state &state = *state_it; - struct regcache *regcache = get_thread_regcache (ptid); + struct regcache *regcache = get_thread_regcache (thread); CORE_ADDR current_pc = regcache_read_pc (regcache); if (current_pc != state.saved_pc) @@ -115,7 +115,7 @@ clear_inline_frame_state (ptid_t ptid) auto it = std::remove_if (inline_states.begin (), inline_states.end (), [pid] (const inline_state &state) { - return pid == state.ptid.pid (); + return pid == state.thread->inf->pid; }); inline_states.erase (it, inline_states.end ()); @@ -126,7 +126,7 @@ clear_inline_frame_state (ptid_t ptid) auto it = std::find_if (inline_states.begin (), inline_states.end (), [&ptid] (const inline_state &state) { - return ptid == state.ptid; + return ptid == state.thread->ptid; }); if (it != inline_states.end ()) @@ -199,7 +199,7 @@ inline_frame_sniffer (const struct frame_unwind *self, const struct block *frame_block, *cur_block; int depth; struct frame_info *next_frame; - struct inline_state *state = find_inline_frame_state (inferior_ptid); + struct inline_state *state = find_inline_frame_state (inferior_thread ()); this_pc = get_frame_address_in_block (this_frame); frame_block = block_for_pc (this_pc); @@ -313,7 +313,7 @@ stopped_by_user_bp_inline_frame (const block *frame_block, bpstat stop_chain) /* See inline-frame.h. */ void -skip_inline_frames (ptid_t ptid, bpstat stop_chain) +skip_inline_frames (thread_info *thread, bpstat stop_chain) { const struct block *frame_block, *cur_block; struct symbol *last_sym = NULL; @@ -356,8 +356,8 @@ skip_inline_frames (ptid_t ptid, bpstat stop_chain) } } - gdb_assert (find_inline_frame_state (ptid) == NULL); - inline_states.emplace_back (ptid, skip_count, this_pc, last_sym); + gdb_assert (find_inline_frame_state (thread) == NULL); + inline_states.emplace_back (thread, skip_count, this_pc, last_sym); if (skip_count != 0) reinit_frame_cache (); @@ -366,9 +366,9 @@ skip_inline_frames (ptid_t ptid, bpstat stop_chain) /* Step into an inlined function by unhiding it. */ void -step_into_inline_frame (ptid_t ptid) +step_into_inline_frame (thread_info *thread) { - struct inline_state *state = find_inline_frame_state (ptid); + inline_state *state = find_inline_frame_state (thread); gdb_assert (state != NULL && state->skipped_frames > 0); state->skipped_frames--; @@ -379,9 +379,9 @@ step_into_inline_frame (ptid_t ptid) frame. */ int -inline_skipped_frames (ptid_t ptid) +inline_skipped_frames (thread_info *thread) { - struct inline_state *state = find_inline_frame_state (ptid); + inline_state *state = find_inline_frame_state (thread); if (state == NULL) return 0; @@ -393,9 +393,9 @@ inline_skipped_frames (ptid_t ptid) the function inlined into the current frame. */ struct symbol * -inline_skipped_symbol (ptid_t ptid) +inline_skipped_symbol (thread_info *thread) { - struct inline_state *state = find_inline_frame_state (ptid); + inline_state *state = find_inline_frame_state (thread); gdb_assert (state != NULL); return state->skipped_symbol; @@ -422,7 +422,7 @@ frame_inlined_callees (struct frame_info *this_frame) they can be stepped into later. If we are unwinding already outer frames from some non-inlined frame this does not apply. */ if (next_frame == NULL) - inline_count += inline_skipped_frames (inferior_ptid); + inline_count += inline_skipped_frames (inferior_thread ()); return inline_count; } diff --git a/gdb/inline-frame.h b/gdb/inline-frame.h index d66ad44..84cfe63 100644 --- a/gdb/inline-frame.h +++ b/gdb/inline-frame.h @@ -36,7 +36,7 @@ extern const struct frame_unwind inline_frame_unwind; user's perspective. GDB will stop "in" the inlined frame instead of the caller. */ -void skip_inline_frames (ptid_t ptid, struct bpstats *stop_chain); +void skip_inline_frames (thread_info *thread, struct bpstats *stop_chain); /* Forget about any hidden inlined functions in PTID, which is new or about to be resumed. If PTID is minus_one_ptid, forget about all @@ -46,17 +46,17 @@ void clear_inline_frame_state (ptid_t ptid); /* Step into an inlined function by unhiding it. */ -void step_into_inline_frame (ptid_t ptid); +void step_into_inline_frame (thread_info *thread); /* Return the number of hidden functions inlined into the current frame. */ -int inline_skipped_frames (ptid_t ptid); +int inline_skipped_frames (thread_info *thread); /* If one or more inlined functions are hidden, return the symbol for the function inlined into the current frame. */ -struct symbol *inline_skipped_symbol (ptid_t ptid); +struct symbol *inline_skipped_symbol (thread_info *thread); /* Return the number of functions inlined into THIS_FRAME. Some of the callees may not have associated frames (see diff --git a/gdb/linux-fork.c b/gdb/linux-fork.c index 0ae213c..ae5a04b 100644 --- a/gdb/linux-fork.c +++ b/gdb/linux-fork.c @@ -535,10 +535,11 @@ Please switch to another checkpoint before deleting the current one")); /* If fi->parent_ptid is not a part of lwp but it's a part of checkpoint list, waitpid the ptid. - If fi->parent_ptid is a part of lwp and it is stoped, waitpid the + If fi->parent_ptid is a part of lwp and it is stopped, waitpid the ptid. */ - if ((!find_thread_ptid (pptid) && find_fork_ptid (pptid)) - || (find_thread_ptid (pptid) && is_stopped (pptid))) + thread_info *parent = find_thread_ptid (pptid); + if ((parent == NULL && find_fork_ptid (pptid)) + || (parent != NULL && parent->state == THREAD_STOPPED)) { if (inferior_call_waitpid (pptid, ptid_get_pid (ptid))) warning (_("Unable to wait pid %s"), target_pid_to_str (ptid)); diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c index a07f41c..af38a2a 100644 --- a/gdb/linux-nat.c +++ b/gdb/linux-nat.c @@ -1006,7 +1006,7 @@ exit_lwp (struct lwp_info *lp) if (print_thread_events) printf_unfiltered (_("[%s exited]\n"), target_pid_to_str (lp->ptid)); - delete_thread (lp->ptid); + delete_thread (th); } delete_lwp (lp->ptid); @@ -1298,27 +1298,26 @@ get_detach_signal (struct lwp_info *lp) signo = GDB_SIGNAL_0; /* a pending ptrace event, not a real signal. */ else if (lp->status) signo = gdb_signal_from_host (WSTOPSIG (lp->status)); - else if (target_is_non_stop_p () && !is_executing (lp->ptid)) + else { struct thread_info *tp = find_thread_ptid (lp->ptid); - if (tp->suspend.waitstatus_pending_p) - signo = tp->suspend.waitstatus.value.sig; - else - signo = tp->suspend.stop_signal; - } - else if (!target_is_non_stop_p ()) - { - struct target_waitstatus last; - ptid_t last_ptid; - - get_last_target_status (&last_ptid, &last); - - if (ptid_get_lwp (lp->ptid) == ptid_get_lwp (last_ptid)) + if (target_is_non_stop_p () && !tp->executing) { - struct thread_info *tp = find_thread_ptid (lp->ptid); + if (tp->suspend.waitstatus_pending_p) + signo = tp->suspend.waitstatus.value.sig; + else + signo = tp->suspend.stop_signal; + } + else if (!target_is_non_stop_p ()) + { + struct target_waitstatus last; + ptid_t last_ptid; + + get_last_target_status (&last_ptid, &last); - signo = tp->suspend.stop_signal; + if (ptid_get_lwp (lp->ptid) == ptid_get_lwp (last_ptid)) + signo = tp->suspend.stop_signal; } } @@ -1801,7 +1800,8 @@ linux_handle_syscall_trap (struct lwp_info *lp, int stopping) { struct target_waitstatus *ourstatus = &lp->waitstatus; struct gdbarch *gdbarch = target_thread_architecture (lp->ptid); - int syscall_number = (int) gdbarch_get_syscall_number (gdbarch, lp->ptid); + thread_info *thread = find_thread_ptid (lp->ptid); + int syscall_number = (int) gdbarch_get_syscall_number (gdbarch, thread); if (stopping) { diff --git a/gdb/linux-thread-db.c b/gdb/linux-thread-db.c index 192e087..e6a5381 100644 --- a/gdb/linux-thread-db.c +++ b/gdb/linux-thread-db.c @@ -210,8 +210,9 @@ struct thread_db_info bookkeeping. */ struct thread_db_info *thread_db_list; -static void thread_db_find_new_threads_1 (ptid_t ptid); -static void thread_db_find_new_threads_2 (ptid_t ptid, int until_no_new); +static void thread_db_find_new_threads_1 (thread_info *stopped); +static void thread_db_find_new_threads_2 (thread_info *stopped, + bool until_no_new); static void check_thread_signals (void); @@ -376,10 +377,11 @@ thread_db_err_str (td_err_e err) } } -/* Fetch the user-level thread id of PTID. */ +/* Fetch the user-level thread id of PTID. STOPPED is a stopped + thread that we can use to access memory. */ static struct thread_info * -thread_from_lwp (ptid_t ptid) +thread_from_lwp (thread_info *stopped, ptid_t ptid) { td_thrhandle_t th; td_thrinfo_t ti; @@ -397,7 +399,7 @@ thread_from_lwp (ptid_t ptid) info = get_thread_db_info (ptid_get_pid (ptid)); /* Access an lwp we know is stopped. */ - info->proc_handle.ptid = ptid; + info->proc_handle.thread = stopped; err = info->td_ta_map_lwp2thr_p (info->thread_agent, ptid_get_lwp (ptid), &th); if (err != TD_OK) @@ -427,11 +429,13 @@ thread_db_notice_clone (ptid_t parent, ptid_t child) if (info == NULL) return 0; - thread_from_lwp (child); + thread_info *stopped = find_thread_ptid (parent); - /* If we do not know about the main thread yet, this would be a good - time to find it. */ - thread_from_lwp (parent); + thread_from_lwp (stopped, child); + + /* If we do not know about the main thread's pthread info yet, this + would be a good time to find it. */ + thread_from_lwp (stopped, parent); return 1; } @@ -482,12 +486,12 @@ inferior_has_bug (const char *ver_symbol, int ver_major_min, int ver_minor_min) otherwise. */ static int -thread_db_find_new_threads_silently (ptid_t ptid) +thread_db_find_new_threads_silently (thread_info *stopped) { TRY { - thread_db_find_new_threads_2 (ptid, 1); + thread_db_find_new_threads_2 (stopped, true); } CATCH (except, RETURN_MASK_ERROR) @@ -823,7 +827,7 @@ try_thread_db_load_1 (struct thread_db_info *info) CHK (TDB_VERBOSE_DLSYM (info, td_ta_new)); /* Initialize the structure that identifies the child process. */ - info->proc_handle.ptid = inferior_ptid; + info->proc_handle.thread = inferior_thread (); /* Now attempt to open a connection to the thread library. */ err = info->td_ta_new_p (&info->proc_handle, &info->thread_agent); @@ -887,16 +891,17 @@ try_thread_db_load_1 (struct thread_db_info *info) { struct lwp_info *lp; int pid = ptid_get_pid (inferior_ptid); + thread_info *curr_thread = inferior_thread (); linux_stop_and_wait_all_lwps (); ALL_LWPS (lp) if (ptid_get_pid (lp->ptid) == pid) - thread_from_lwp (lp->ptid); + thread_from_lwp (curr_thread, lp->ptid); linux_unstop_all_lwps (); } - else if (thread_db_find_new_threads_silently (inferior_ptid) != 0) + else if (thread_db_find_new_threads_silently (inferior_thread ()) != 0) { /* Even if libthread_db initializes, if the thread list is corrupted, we'd not manage to list any threads. Better reject this @@ -1397,7 +1402,7 @@ thread_db_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus, } /* Fill in the thread's user-level thread id and status. */ - thread_from_lwp (ptid); + thread_from_lwp (find_thread_ptid (ptid), ptid); return ptid; } @@ -1425,7 +1430,6 @@ find_new_threads_callback (const td_thrhandle_t *th_p, void *data) { td_thrinfo_t ti; td_err_e err; - ptid_t ptid; struct thread_info *tp; struct callback_data *cb_data = (struct callback_data *) data; struct thread_db_info *info = cb_data->info; @@ -1476,7 +1480,7 @@ find_new_threads_callback (const td_thrhandle_t *th_p, void *data) return 0; } - ptid = ptid_build (info->pid, ti.ti_lid, 0); + ptid_t ptid (info->pid, ti.ti_lid); tp = find_thread_ptid (ptid); if (tp == NULL || tp->priv == NULL) record_thread (info, tp, ptid, th_p, &ti); @@ -1539,16 +1543,16 @@ find_new_threads_once (struct thread_db_info *info, int iteration, searches in a row do not discover any new threads. */ static void -thread_db_find_new_threads_2 (ptid_t ptid, int until_no_new) +thread_db_find_new_threads_2 (thread_info *stopped, bool until_no_new) { td_err_e err = TD_OK; struct thread_db_info *info; int i, loop; - info = get_thread_db_info (ptid_get_pid (ptid)); + info = get_thread_db_info (stopped->ptid.pid ()); /* Access an lwp we know is stopped. */ - info->proc_handle.ptid = ptid; + info->proc_handle.thread = stopped; if (until_no_new) { @@ -1571,9 +1575,9 @@ thread_db_find_new_threads_2 (ptid_t ptid, int until_no_new) } static void -thread_db_find_new_threads_1 (ptid_t ptid) +thread_db_find_new_threads_1 (thread_info *stopped) { - thread_db_find_new_threads_2 (ptid, 0); + thread_db_find_new_threads_2 (stopped, 0); } /* Implement the to_update_thread_list target method for this @@ -1598,7 +1602,7 @@ thread_db_target::update_thread_list () if (info == NULL) continue; - thread = any_live_thread_of_process (inf->pid); + thread = any_live_thread_of_inferior (inf); if (thread == NULL || thread->executing) continue; @@ -1616,7 +1620,7 @@ thread_db_target::update_thread_list () if (target_has_execution_1 (thread->ptid)) continue; - thread_db_find_new_threads_1 (thread->ptid); + thread_db_find_new_threads_1 (thread); } /* Give the beneath target a chance to do extra processing. */ @@ -1706,7 +1710,7 @@ thread_db_target::get_thread_local_address (ptid_t ptid, /* We may not have discovered the thread yet. */ if (thread_info != NULL && thread_info->priv == NULL) - thread_info = thread_from_lwp (ptid); + thread_info = thread_from_lwp (thread_info, ptid); if (thread_info != NULL && thread_info->priv != NULL) { diff --git a/gdb/mi/mi-cmd-var.c b/gdb/mi/mi-cmd-var.c index 38c59c7..08e360c 100644 --- a/gdb/mi/mi-cmd-var.c +++ b/gdb/mi/mi-cmd-var.c @@ -31,6 +31,7 @@ #include "gdbthread.h" #include "mi-parse.h" #include "common/gdb_optional.h" +#include "inferior.h" extern unsigned int varobjdebug; /* defined in varobj.c. */ @@ -600,22 +601,21 @@ static void mi_cmd_var_update_iter (struct varobj *var, void *data_pointer) { struct mi_cmd_var_update *data = (struct mi_cmd_var_update *) data_pointer; - int thread_id, thread_stopped; + bool thread_stopped; - thread_id = varobj_get_thread_id (var); + int thread_id = varobj_get_thread_id (var); - if (thread_id == -1 - && (ptid_equal (inferior_ptid, null_ptid) - || is_stopped (inferior_ptid))) - thread_stopped = 1; + if (thread_id == -1) + { + thread_stopped = (inferior_ptid == null_ptid + || inferior_thread ()->state == THREAD_STOPPED); + } else { - struct thread_info *tp = find_thread_global_id (thread_id); + thread_info *tp = find_thread_global_id (thread_id); - if (tp) - thread_stopped = is_stopped (tp->ptid); - else - thread_stopped = 1; + thread_stopped = (tp == NULL + || tp->state == THREAD_STOPPED); } if (thread_stopped diff --git a/gdb/mi/mi-interp.c b/gdb/mi/mi-interp.c index ebc899f..a12329f 100644 --- a/gdb/mi/mi-interp.c +++ b/gdb/mi/mi-interp.c @@ -328,10 +328,6 @@ mi_interp::pre_command_loop () static void mi_new_thread (struct thread_info *t) { - struct inferior *inf = find_inferior_ptid (t->ptid); - - gdb_assert (inf); - SWITCH_THRU_ALL_UIS () { struct mi_interp *mi = as_mi_interp (top_level_interpreter ()); @@ -344,7 +340,7 @@ mi_new_thread (struct thread_info *t) fprintf_unfiltered (mi->event_channel, "thread-created,id=\"%d\",group-id=\"i%d\"", - t->global_num, inf->num); + t->global_num, t->inf->num); gdb_flush (mi->event_channel); } } @@ -658,7 +654,7 @@ mi_on_normal_stop_1 (struct bpstats *bs, int print_frame) else mi_uiout->field_string ("stopped-threads", "all"); - core = target_core_of_thread (inferior_ptid); + core = target_core_of_thread (tp->ptid); if (core != -1) mi_uiout->field_int ("core", core); } @@ -939,11 +935,9 @@ mi_breakpoint_modified (struct breakpoint *b) } } -static int -mi_output_running_pid (struct thread_info *info, void *arg) +static void +mi_output_running (struct thread_info *thread) { - ptid_t *ptid = (ptid_t *) arg; - SWITCH_THRU_ALL_UIS () { struct mi_interp *mi = as_mi_interp (top_level_interpreter ()); @@ -951,25 +945,10 @@ mi_output_running_pid (struct thread_info *info, void *arg) if (mi == NULL) continue; - if (ptid_get_pid (*ptid) == ptid_get_pid (info->ptid)) - fprintf_unfiltered (mi->raw_stdout, - "*running,thread-id=\"%d\"\n", - info->global_num); + fprintf_unfiltered (mi->raw_stdout, + "*running,thread-id=\"%d\"\n", + thread->global_num); } - - return 0; -} - -static int -mi_inferior_count (struct inferior *inf, void *arg) -{ - if (inf->pid != 0) - { - int *count_p = (int *) arg; - (*count_p)++; - } - - return 0; } static void @@ -994,24 +973,37 @@ mi_on_resume_1 (struct mi_interp *mi, ptid_t ptid) else if (ptid_is_pid (ptid)) { int count = 0; + inferior *inf; /* Backwards compatibility. If there's only one inferior, output "all", otherwise, output each resumed thread individually. */ - iterate_over_inferiors (mi_inferior_count, &count); + ALL_INFERIORS (inf) + if (inf->pid != 0) + { + count++; + if (count > 1) + break; + } if (count == 1) fprintf_unfiltered (mi->raw_stdout, "*running,thread-id=\"all\"\n"); else - iterate_over_threads (mi_output_running_pid, &ptid); + { + thread_info *tp; + inferior *curinf = current_inferior (); + + ALL_NON_EXITED_THREADS (tp) + if (tp->inf == curinf) + mi_output_running (tp); + } } else { - struct thread_info *ti = find_thread_ptid (ptid); + thread_info *ti = find_thread_ptid (ptid); gdb_assert (ti); - fprintf_unfiltered (mi->raw_stdout, "*running,thread-id=\"%d\"\n", - ti->global_num); + mi_output_running (ti); } if (!running_result_record_printed && mi_proceeded) @@ -1234,7 +1226,10 @@ mi_user_selected_context_changed (user_selected_what selection) if (mi_suppress_notification.user_selected_context) return; - tp = find_thread_ptid (inferior_ptid); + if (inferior_ptid != null_ptid) + tp = inferior_thread (); + else + tp = NULL; SWITCH_THRU_ALL_UIS () { diff --git a/gdb/mi/mi-main.c b/gdb/mi/mi-main.c index 14b3e68..2177abd 100644 --- a/gdb/mi/mi-main.c +++ b/gdb/mi/mi-main.c @@ -243,13 +243,13 @@ mi_cmd_exec_jump (const char *args, char **argv, int argc) static void proceed_thread (struct thread_info *thread, int pid) { - if (!is_stopped (thread->ptid)) + if (thread->state != THREAD_STOPPED) return; if (pid != 0 && ptid_get_pid (thread->ptid) != pid) return; - switch_to_thread (thread->ptid); + switch_to_thread (thread); clear_proceed_status (0); proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); } @@ -345,7 +345,7 @@ interrupt_thread_callback (struct thread_info *thread, void *arg) { int pid = *(int *)arg; - if (!is_running (thread->ptid)) + if (thread->state != THREAD_RUNNING) return 0; if (ptid_get_pid (thread->ptid) != pid) @@ -409,21 +409,16 @@ run_one_inferior (struct inferior *inf, void *arg) if (inf->pid != 0) { - if (inf->pid != ptid_get_pid (inferior_ptid)) - { - struct thread_info *tp; - - tp = any_thread_of_process (inf->pid); - if (!tp) - error (_("Inferior has no threads.")); + thread_info *tp = any_thread_of_inferior (inf); + if (tp == NULL) + error (_("Inferior has no threads.")); - switch_to_thread (tp->ptid); - } + switch_to_thread (tp); } else { set_current_inferior (inf); - switch_to_thread (null_ptid); + switch_to_no_thread (); set_current_program_space (inf->pspace); } mi_execute_cli_command (run_cmd, async_p, @@ -492,7 +487,7 @@ find_thread_of_process (struct thread_info *ti, void *p) { int pid = *(int *)p; - if (ptid_get_pid (ti->ptid) == pid && !is_exited (ti->ptid)) + if (ptid_get_pid (ti->ptid) == pid && ti->state != THREAD_EXITED) return 1; return 0; @@ -540,7 +535,7 @@ mi_cmd_target_detach (const char *command, char **argv, int argc) if (!tp) error (_("Thread group is empty")); - switch_to_thread (tp->ptid); + switch_to_thread (tp); } detach_command (NULL, 0); @@ -1771,8 +1766,11 @@ mi_cmd_remove_inferior (const char *command, char **argv, int argc) set_current_inferior (new_inferior); if (new_inferior->pid != 0) - tp = any_thread_of_process (new_inferior->pid); - switch_to_thread (tp ? tp->ptid : null_ptid); + tp = any_thread_of_inferior (new_inferior); + if (tp != NULL) + switch_to_thread (tp); + else + switch_to_no_thread (); set_current_program_space (new_inferior->pspace); } @@ -2058,22 +2056,25 @@ mi_cmd_execute (struct mi_parse *parse) provide --thread if it wishes to operate on a specific thread. */ if (inf->pid != 0) - tp = any_live_thread_of_process (inf->pid); - switch_to_thread (tp ? tp->ptid : null_ptid); + tp = any_live_thread_of_inferior (inf); + if (tp != NULL) + switch_to_thread (tp); + else + switch_to_no_thread (); set_current_program_space (inf->pspace); } if (parse->thread != -1) { - struct thread_info *tp = find_thread_global_id (parse->thread); + thread_info *tp = find_thread_global_id (parse->thread); - if (!tp) + if (tp == NULL) error (_("Invalid thread id: %d"), parse->thread); - if (is_exited (tp->ptid)) + if (tp->state == THREAD_EXITED) error (_("Thread id: %d has terminated"), parse->thread); - switch_to_thread (tp->ptid); + switch_to_thread (tp); } if (parse->frame != -1) diff --git a/gdb/mips-linux-tdep.c b/gdb/mips-linux-tdep.c index 30d5feb..71183d7 100644 --- a/gdb/mips-linux-tdep.c +++ b/gdb/mips-linux-tdep.c @@ -1314,9 +1314,9 @@ mips_linux_syscall_next_pc (struct frame_info *frame) static LONGEST mips_linux_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) + thread_info *thread) { - struct regcache *regcache = get_thread_regcache (ptid); + struct regcache *regcache = get_thread_regcache (thread); struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); int regsize = register_size (gdbarch, MIPS_V0_REGNUM); diff --git a/gdb/ppc-linux-tdep.c b/gdb/ppc-linux-tdep.c index 9f4c1fc..f585e5a 100644 --- a/gdb/ppc-linux-tdep.c +++ b/gdb/ppc-linux-tdep.c @@ -803,9 +803,9 @@ ppc_linux_trap_reg_p (struct gdbarch *gdbarch) r0 register. When the function fails, it returns -1. */ static LONGEST ppc_linux_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) + thread_info *thread) { - struct regcache *regcache = get_thread_regcache (ptid); + struct regcache *regcache = get_thread_regcache (thread); struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); diff --git a/gdb/proc-service.c b/gdb/proc-service.c index 8afa667..04867d2 100644 --- a/gdb/proc-service.c +++ b/gdb/proc-service.c @@ -21,6 +21,7 @@ #include "gdbcore.h" #include "inferior.h" +#include "gdbthread.h" #include "symtab.h" #include "target.h" #include "regcache.h" @@ -73,7 +74,7 @@ ps_xfer_memory (const struct ps_prochandle *ph, psaddr_t addr, int ret; CORE_ADDR core_addr = ps_addr_to_core_addr (addr); - inferior_ptid = ph->ptid; + inferior_ptid = ph->thread->ptid; if (write) ret = target_write_memory (core_addr, buf, len); @@ -92,7 +93,7 @@ ps_err_e ps_pglobal_lookup (struct ps_prochandle *ph, const char *obj, const char *name, psaddr_t *sym_addr) { - struct inferior *inf = find_inferior_ptid (ph->ptid); + inferior *inf = ph->thread->inf; scoped_restore_current_program_space restore_pspace; @@ -131,9 +132,7 @@ ps_pdwrite (struct ps_prochandle *ph, psaddr_t addr, ps_err_e ps_lgetregs (struct ps_prochandle *ph, lwpid_t lwpid, prgregset_t gregset) { - ptid_t ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0); - struct regcache *regcache - = get_thread_arch_regcache (ptid, target_gdbarch ()); + struct regcache *regcache = get_thread_regcache (ph->thread); target_fetch_registers (regcache, -1); fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); @@ -147,9 +146,7 @@ ps_lgetregs (struct ps_prochandle *ph, lwpid_t lwpid, prgregset_t gregset) ps_err_e ps_lsetregs (struct ps_prochandle *ph, lwpid_t lwpid, const prgregset_t gregset) { - ptid_t ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0); - struct regcache *regcache - = get_thread_arch_regcache (ptid, target_gdbarch ()); + struct regcache *regcache = get_thread_regcache (ph->thread); supply_gregset (regcache, (const gdb_gregset_t *) gregset); target_store_registers (regcache, -1); @@ -163,9 +160,7 @@ ps_lsetregs (struct ps_prochandle *ph, lwpid_t lwpid, const prgregset_t gregset) ps_err_e ps_lgetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, gdb_prfpregset_t *fpregset) { - ptid_t ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0); - struct regcache *regcache - = get_thread_arch_regcache (ptid, target_gdbarch ()); + struct regcache *regcache = get_thread_regcache (ph->thread); target_fetch_registers (regcache, -1); fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); @@ -180,9 +175,7 @@ ps_err_e ps_lsetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, const gdb_prfpregset_t *fpregset) { - ptid_t ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0); - struct regcache *regcache - = get_thread_arch_regcache (ptid, target_gdbarch ()); + struct regcache *regcache = get_thread_regcache (ph->thread); supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); target_store_registers (regcache, -1); @@ -196,7 +189,7 @@ ps_lsetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, pid_t ps_getpid (struct ps_prochandle *ph) { - return ptid_get_pid (ph->ptid); + return ptid_get_pid (ph->thread->ptid); } void diff --git a/gdb/progspace-and-thread.c b/gdb/progspace-and-thread.c index 27d626b..0542271 100644 --- a/gdb/progspace-and-thread.c +++ b/gdb/progspace-and-thread.c @@ -17,6 +17,7 @@ #include "defs.h" #include "progspace-and-thread.h" +#include "inferior.h" /* See progspace-and-thread.h */ @@ -27,17 +28,17 @@ switch_to_program_space_and_thread (program_space *pspace) if (inf != NULL && inf->pid != 0) { - thread_info *tp = any_live_thread_of_process (inf->pid); + thread_info *tp = any_live_thread_of_inferior (inf); if (tp != NULL) { - switch_to_thread (tp->ptid); + switch_to_thread (tp); /* Switching thread switches pspace implicitly. We're done. */ return; } } - switch_to_thread (null_ptid); + switch_to_no_thread (); set_current_program_space (pspace); } diff --git a/gdb/progspace.c b/gdb/progspace.c index 9954a19..ca6b02f 100644 --- a/gdb/progspace.c +++ b/gdb/progspace.c @@ -24,6 +24,7 @@ #include "gdbcore.h" #include "solib.h" #include "gdbthread.h" +#include "inferior.h" /* The last program space number assigned. */ int last_program_space_num = 0; diff --git a/gdb/python/py-exitedevent.c b/gdb/python/py-exitedevent.c index 4f861e3..6a7c9f5 100644 --- a/gdb/python/py-exitedevent.c +++ b/gdb/python/py-exitedevent.c @@ -39,10 +39,10 @@ create_exited_event_object (const LONGEST *exit_code, struct inferior *inf) return NULL; } - gdbpy_ref<> inf_obj (inferior_to_inferior_object (inf)); + gdbpy_ref<inferior_object> inf_obj (inferior_to_inferior_object (inf)); if (inf_obj == NULL || evpy_add_attribute (exited_event.get (), "inferior", - inf_obj.get ()) < 0) + (PyObject *) inf_obj.get ()) < 0) return NULL; return exited_event.release (); diff --git a/gdb/python/py-finishbreakpoint.c b/gdb/python/py-finishbreakpoint.c index b3978f7..c33b7dd 100644 --- a/gdb/python/py-finishbreakpoint.c +++ b/gdb/python/py-finishbreakpoint.c @@ -221,14 +221,15 @@ bpfinishpy_init (PyObject *self, PyObject *args, PyObject *kwargs) if (PyErr_Occurred ()) return -1; - thread = ptid_to_global_thread_id (inferior_ptid); - if (thread == 0) + if (inferior_ptid == null_ptid) { PyErr_SetString (PyExc_ValueError, _("No thread currently selected.")); return -1; } + thread = inferior_thread ()->global_num; + if (internal) { internal_bp = PyObject_IsTrue (internal); diff --git a/gdb/python/py-inferior.c b/gdb/python/py-inferior.c index d199aaa..9f09ae9 100644 --- a/gdb/python/py-inferior.c +++ b/gdb/python/py-inferior.c @@ -35,7 +35,7 @@ struct threadlist_entry { struct threadlist_entry *next; }; -typedef struct +struct inferior_object { PyObject_HEAD @@ -48,7 +48,7 @@ typedef struct /* Number of threads in the list. */ int nthreads; -} inferior_object; +}; extern PyTypeObject inferior_object_type CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("inferior_object"); @@ -207,7 +207,8 @@ python_new_objfile (struct objfile *objfile) representing INFERIOR. If the object has already been created, return it and increment the reference count, otherwise, create it. Return NULL on failure. */ -PyObject * + +inferior_object * inferior_to_inferior_object (struct inferior *inferior) { inferior_object *inf_obj; @@ -232,7 +233,7 @@ inferior_to_inferior_object (struct inferior *inferior) /* We are returning a new reference. */ Py_INCREF ((PyObject *)inf_obj); - return (PyObject *) inf_obj; + return inf_obj; } /* Called when a new inferior is created. Notifies any Python event @@ -248,7 +249,7 @@ python_new_inferior (struct inferior *inf) if (evregpy_no_listeners_p (gdb_py_events.new_inferior)) return; - gdbpy_ref<> inf_obj (inferior_to_inferior_object (inf)); + gdbpy_ref<inferior_object> inf_obj (inferior_to_inferior_object (inf)); if (inf_obj == NULL) { gdbpy_print_stack (); @@ -257,7 +258,8 @@ python_new_inferior (struct inferior *inf) gdbpy_ref<> event (create_event_object (&new_inferior_event_object_type)); if (event == NULL - || evpy_add_attribute (event.get (), "inferior", inf_obj.get ()) < 0 + || evpy_add_attribute (event.get (), "inferior", + (PyObject *) inf_obj.get ()) < 0 || evpy_emit_event (event.get (), gdb_py_events.new_inferior) < 0) gdbpy_print_stack (); } @@ -275,7 +277,7 @@ python_inferior_deleted (struct inferior *inf) if (evregpy_no_listeners_p (gdb_py_events.inferior_deleted)) return; - gdbpy_ref<> inf_obj (inferior_to_inferior_object (inf)); + gdbpy_ref<inferior_object> inf_obj (inferior_to_inferior_object (inf)); if (inf_obj == NULL) { gdbpy_print_stack (); @@ -284,7 +286,8 @@ python_inferior_deleted (struct inferior *inf) gdbpy_ref<> event (create_event_object (&inferior_deleted_event_object_type)); if (event == NULL - || evpy_add_attribute (event.get (), "inferior", inf_obj.get ()) < 0 + || evpy_add_attribute (event.get (), "inferior", + (PyObject *) inf_obj.get ()) < 0 || evpy_emit_event (event.get (), gdb_py_events.inferior_deleted) < 0) gdbpy_print_stack (); } @@ -298,28 +301,22 @@ find_inferior_object (int pid) struct inferior *inf = find_inferior_pid (pid); if (inf) - return inferior_to_inferior_object (inf); + return (PyObject *) inferior_to_inferior_object (inf); return NULL; } thread_object * -find_thread_object (ptid_t ptid) +thread_to_thread_object (thread_info *thr) { - int pid; - struct threadlist_entry *thread; - - pid = ptid_get_pid (ptid); - if (pid == 0) - return NULL; - - gdbpy_ref<> inf_obj (find_inferior_object (pid)); + gdbpy_ref<inferior_object> inf_obj (inferior_to_inferior_object (thr->inf)); if (inf_obj == NULL) return NULL; - for (thread = ((inferior_object *)(inf_obj.get ()))->threads; thread; + for (threadlist_entry *thread = inf_obj->threads; + thread != NULL; thread = thread->next) - if (ptid_equal (thread->thread_obj->thread->ptid, ptid)) + if (thread->thread_obj->thread == thr) return thread->thread_obj; return NULL; @@ -374,7 +371,7 @@ delete_thread_object (struct thread_info *tp, int ignore) gdbpy_enter enter_py (python_gdbarch, python_language); gdbpy_ref<inferior_object> inf_obj - ((inferior_object *) find_inferior_object (ptid_get_pid (tp->ptid))); + ((inferior_object *) inferior_to_inferior_object (tp->inf)); if (inf_obj == NULL) return; @@ -466,12 +463,12 @@ static int build_inferior_list (struct inferior *inf, void *arg) { PyObject *list = (PyObject *) arg; - gdbpy_ref<> inferior (inferior_to_inferior_object (inf)); + gdbpy_ref<inferior_object> inferior (inferior_to_inferior_object (inf)); - if (inferior == NULL) + if (inferior == NULL) return 0; - return PyList_Append (list, inferior.get ()) ? 1 : 0; + return PyList_Append (list, (PyObject *) inferior.get ()) ? 1 : 0; } /* Implementation of gdb.inferiors () -> (gdb.Inferior, ...). @@ -848,7 +845,7 @@ infpy_thread_from_thread_handle (PyObject *self, PyObject *args, PyObject *kw) thread_info = find_thread_by_handle (val, inf_obj->inferior); if (thread_info != NULL) { - result = (PyObject *) find_thread_object (thread_info->ptid); + result = (PyObject *) thread_to_thread_object (thread_info); if (result != NULL) Py_INCREF (result); } @@ -910,7 +907,7 @@ py_free_inferior (struct inferior *inf, void *datum) PyObject * gdbpy_selected_inferior (PyObject *self, PyObject *args) { - return inferior_to_inferior_object (current_inferior ()); + return (PyObject *) inferior_to_inferior_object (current_inferior ()); } int diff --git a/gdb/python/py-infthread.c b/gdb/python/py-infthread.c index 9ed18a3..9b90ad5 100644 --- a/gdb/python/py-infthread.c +++ b/gdb/python/py-infthread.c @@ -46,7 +46,7 @@ create_thread_object (struct thread_info *tp) return NULL; thread_obj->thread = tp; - thread_obj->inf_obj = find_inferior_object (ptid_get_pid (tp->ptid)); + thread_obj->inf_obj = (PyObject *) inferior_to_inferior_object (tp->inf); return thread_obj; } @@ -179,7 +179,7 @@ thpy_switch (PyObject *self, PyObject *args) TRY { - switch_to_thread (thread_obj->thread->ptid); + switch_to_thread (thread_obj->thread); } CATCH (except, RETURN_MASK_ALL) { @@ -200,7 +200,7 @@ thpy_is_stopped (PyObject *self, PyObject *args) THPY_REQUIRE_VALID (thread_obj); - if (is_stopped (thread_obj->thread->ptid)) + if (thread_obj->thread->state == THREAD_STOPPED) Py_RETURN_TRUE; Py_RETURN_FALSE; @@ -216,7 +216,7 @@ thpy_is_running (PyObject *self, PyObject *args) THPY_REQUIRE_VALID (thread_obj); - if (is_running (thread_obj->thread->ptid)) + if (thread_obj->thread->state == THREAD_RUNNING) Py_RETURN_TRUE; Py_RETURN_FALSE; @@ -232,7 +232,7 @@ thpy_is_exited (PyObject *self, PyObject *args) THPY_REQUIRE_VALID (thread_obj); - if (is_exited (thread_obj->thread->ptid)) + if (thread_obj->thread->state == THREAD_EXITED) Py_RETURN_TRUE; Py_RETURN_FALSE; @@ -283,13 +283,15 @@ gdbpy_create_ptid_object (ptid_t ptid) PyObject * gdbpy_selected_thread (PyObject *self, PyObject *args) { - PyObject *thread_obj; - - thread_obj = (PyObject *) find_thread_object (inferior_ptid); - if (thread_obj) + if (inferior_ptid != null_ptid) { - Py_INCREF (thread_obj); - return thread_obj; + PyObject *thread_obj + = (PyObject *) thread_to_thread_object (inferior_thread ()); + if (thread_obj != NULL) + { + Py_INCREF (thread_obj); + return thread_obj; + } } Py_RETURN_NONE; diff --git a/gdb/python/py-record-btrace.c b/gdb/python/py-record-btrace.c index d78df7f..057475e 100644 --- a/gdb/python/py-record-btrace.c +++ b/gdb/python/py-record-btrace.c @@ -43,7 +43,7 @@ typedef struct { PyObject_HEAD /* The thread this list belongs to. */ - ptid_t ptid; + thread_info *thread; /* The first index being part of this list. */ Py_ssize_t first; @@ -82,7 +82,7 @@ btrace_insn_from_recpy_insn (const PyObject * const pyobject) } obj = (const recpy_element_object *) pyobject; - tinfo = find_thread_ptid (obj->ptid); + tinfo = obj->thread; if (tinfo == NULL || btrace_is_empty (tinfo)) { @@ -125,7 +125,7 @@ btrace_func_from_recpy_func (const PyObject * const pyobject) } obj = (const recpy_element_object *) pyobject; - tinfo = find_thread_ptid (obj->ptid); + tinfo = obj->thread; if (tinfo == NULL || btrace_is_empty (tinfo)) { @@ -153,7 +153,7 @@ btrace_func_from_recpy_func (const PyObject * const pyobject) gdb.RecordInstruction or gdb.RecordGap object for it accordingly. */ static PyObject * -btpy_insn_or_gap_new (const thread_info *tinfo, Py_ssize_t number) +btpy_insn_or_gap_new (thread_info *tinfo, Py_ssize_t number) { btrace_insn_iterator iter; int err_code; @@ -172,13 +172,13 @@ btpy_insn_or_gap_new (const thread_info *tinfo, Py_ssize_t number) return recpy_gap_new (err_code, err_string, number); } - return recpy_insn_new (tinfo->ptid, RECORD_METHOD_BTRACE, number); + return recpy_insn_new (tinfo, RECORD_METHOD_BTRACE, number); } /* Create a new gdb.BtraceList object. */ static PyObject * -btpy_list_new (ptid_t ptid, Py_ssize_t first, Py_ssize_t last, Py_ssize_t step, +btpy_list_new (thread_info *thread, Py_ssize_t first, Py_ssize_t last, Py_ssize_t step, PyTypeObject *element_type) { btpy_list_object * const obj = PyObject_New (btpy_list_object, @@ -187,7 +187,7 @@ btpy_list_new (ptid_t ptid, Py_ssize_t first, Py_ssize_t last, Py_ssize_t step, if (obj == NULL) return NULL; - obj->ptid = ptid; + obj->thread = thread; obj->first = first; obj->last = last; obj->step = step; @@ -344,7 +344,7 @@ recpy_bt_func_level (PyObject *self, void *closure) if (func == NULL) return NULL; - tinfo = find_thread_ptid (((recpy_element_object *) self)->ptid); + tinfo = ((recpy_element_object *) self)->thread; return PyInt_FromLong (tinfo->btrace.level + func->level); } @@ -383,7 +383,7 @@ recpy_bt_func_instructions (PyObject *self, void *closure) if (len == 0) len = 1; - return btpy_list_new (((recpy_element_object *) self)->ptid, + return btpy_list_new (((recpy_element_object *) self)->thread, func->insn_offset, func->insn_offset + len, 1, &recpy_insn_type); } @@ -402,7 +402,7 @@ recpy_bt_func_up (PyObject *self, void *closure) if (func->up == 0) Py_RETURN_NONE; - return recpy_func_new (((recpy_element_object *) self)->ptid, + return recpy_func_new (((recpy_element_object *) self)->thread, RECORD_METHOD_BTRACE, func->up); } @@ -420,7 +420,7 @@ recpy_bt_func_prev (PyObject *self, void *closure) if (func->prev == 0) Py_RETURN_NONE; - return recpy_func_new (((recpy_element_object *) self)->ptid, + return recpy_func_new (((recpy_element_object *) self)->thread, RECORD_METHOD_BTRACE, func->prev); } @@ -438,7 +438,7 @@ recpy_bt_func_next (PyObject *self, void *closure) if (func->next == 0) Py_RETURN_NONE; - return recpy_func_new (((recpy_element_object *) self)->ptid, + return recpy_func_new (((recpy_element_object *) self)->thread, RECORD_METHOD_BTRACE, func->next); } @@ -474,9 +474,9 @@ btpy_list_item (PyObject *self, Py_ssize_t index) number = obj->first + (obj->step * index); if (obj->element_type == &recpy_insn_type) - return recpy_insn_new (obj->ptid, RECORD_METHOD_BTRACE, number); + return recpy_insn_new (obj->thread, RECORD_METHOD_BTRACE, number); else - return recpy_func_new (obj->ptid, RECORD_METHOD_BTRACE, number); + return recpy_func_new (obj->thread, RECORD_METHOD_BTRACE, number); } /* Implementation of BtraceList.__getitem__ (self, slice) -> BtraceList. */ @@ -506,7 +506,7 @@ btpy_list_slice (PyObject *self, PyObject *value) &step, &slicelength)) return NULL; - return btpy_list_new (obj->ptid, obj->first + obj->step * start, + return btpy_list_new (obj->thread, obj->first + obj->step * start, obj->first + obj->step * stop, obj->step * step, obj->element_type); } @@ -524,7 +524,7 @@ btpy_list_position (PyObject *self, PyObject *value) if (list_obj->element_type != Py_TYPE (value)) return -1; - if (!ptid_equal (list_obj->ptid, obj->ptid)) + if (list_obj->thread != obj->thread) return -1; if (index < list_obj->first || index > list_obj->last) @@ -590,7 +590,7 @@ btpy_list_richcompare (PyObject *self, PyObject *other, int op) switch (op) { case Py_EQ: - if (ptid_equal (obj1->ptid, obj2->ptid) + if (obj1->thread == obj2->thread && obj1->element_type == obj2->element_type && obj1->first == obj2->first && obj1->last == obj2->last @@ -600,7 +600,7 @@ btpy_list_richcompare (PyObject *self, PyObject *other, int op) Py_RETURN_FALSE; case Py_NE: - if (!ptid_equal (obj1->ptid, obj2->ptid) + if (obj1->thread != obj2->thread || obj1->element_type != obj2->element_type || obj1->first != obj2->first || obj1->last != obj2->last @@ -633,7 +633,7 @@ PyObject * recpy_bt_format (PyObject *self, void *closure) { const recpy_record_object * const record = (recpy_record_object *) self; - const struct thread_info * const tinfo = find_thread_ptid (record->ptid); + const struct thread_info * const tinfo = record->thread; const struct btrace_config * config; if (tinfo == NULL) @@ -654,7 +654,7 @@ PyObject * recpy_bt_replay_position (PyObject *self, void *closure) { const recpy_record_object * const record = (recpy_record_object *) self; - const struct thread_info * const tinfo = find_thread_ptid (record->ptid); + thread_info * tinfo = record->thread; if (tinfo == NULL) Py_RETURN_NONE; @@ -673,7 +673,7 @@ PyObject * recpy_bt_begin (PyObject *self, void *closure) { const recpy_record_object * const record = (recpy_record_object *) self; - struct thread_info * const tinfo = find_thread_ptid (record->ptid); + thread_info *const tinfo = record->thread; struct btrace_insn_iterator iterator; if (tinfo == NULL) @@ -695,7 +695,7 @@ PyObject * recpy_bt_end (PyObject *self, void *closure) { const recpy_record_object * const record = (recpy_record_object *) self; - struct thread_info * const tinfo = find_thread_ptid (record->ptid); + thread_info *const tinfo = record->thread; struct btrace_insn_iterator iterator; if (tinfo == NULL) @@ -717,7 +717,7 @@ PyObject * recpy_bt_instruction_history (PyObject *self, void *closure) { const recpy_record_object * const record = (recpy_record_object *) self; - struct thread_info * const tinfo = find_thread_ptid (record->ptid); + thread_info *const tinfo = record->thread; struct btrace_insn_iterator iterator; unsigned long first = 0; unsigned long last = 0; @@ -736,7 +736,7 @@ recpy_bt_instruction_history (PyObject *self, void *closure) btrace_insn_end (&iterator, &tinfo->btrace); last = btrace_insn_number (&iterator); - return btpy_list_new (record->ptid, first, last, 1, &recpy_insn_type); + return btpy_list_new (tinfo, first, last, 1, &recpy_insn_type); } /* Implementation of @@ -746,7 +746,7 @@ PyObject * recpy_bt_function_call_history (PyObject *self, void *closure) { const recpy_record_object * const record = (recpy_record_object *) self; - struct thread_info * const tinfo = find_thread_ptid (record->ptid); + thread_info *const tinfo = record->thread; struct btrace_call_iterator iterator; unsigned long first = 0; unsigned long last = 0; @@ -765,7 +765,7 @@ recpy_bt_function_call_history (PyObject *self, void *closure) btrace_call_end (&iterator, &tinfo->btrace); last = btrace_call_number (&iterator); - return btpy_list_new (record->ptid, first, last, 1, &recpy_func_type); + return btpy_list_new (tinfo, first, last, 1, &recpy_func_type); } /* Implementation of BtraceRecord.goto (self, BtraceInstruction) -> None. */ @@ -774,7 +774,7 @@ PyObject * recpy_bt_goto (PyObject *self, PyObject *args) { const recpy_record_object * const record = (recpy_record_object *) self; - struct thread_info * const tinfo = find_thread_ptid (record->ptid); + thread_info *const tinfo = record->thread; const recpy_element_object *obj; if (tinfo == NULL || btrace_is_empty (tinfo)) diff --git a/gdb/python/py-record.c b/gdb/python/py-record.c index 9437cfb..b203786 100644 --- a/gdb/python/py-record.c +++ b/gdb/python/py-record.c @@ -23,6 +23,7 @@ #include "py-record-btrace.h" #include "py-record-full.h" #include "target.h" +#include "gdbthread.h" /* Python Record type. */ @@ -176,7 +177,7 @@ recpy_end (PyObject *self, void* closure) /* Create a new gdb.RecordInstruction object. */ PyObject * -recpy_insn_new (ptid_t ptid, enum record_method method, Py_ssize_t number) +recpy_insn_new (thread_info *thread, enum record_method method, Py_ssize_t number) { recpy_element_object * const obj = PyObject_New (recpy_element_object, &recpy_insn_type); @@ -184,7 +185,7 @@ recpy_insn_new (ptid_t ptid, enum record_method method, Py_ssize_t number) if (obj == NULL) return NULL; - obj->ptid = ptid; + obj->thread = thread; obj->method = method; obj->number = number; @@ -272,7 +273,7 @@ recpy_insn_is_speculative (PyObject *self, void *closure) /* Create a new gdb.RecordFunctionSegment object. */ PyObject * -recpy_func_new (ptid_t ptid, enum record_method method, Py_ssize_t number) +recpy_func_new (thread_info *thread, enum record_method method, Py_ssize_t number) { recpy_element_object * const obj = PyObject_New (recpy_element_object, &recpy_func_type); @@ -280,7 +281,7 @@ recpy_func_new (ptid_t ptid, enum record_method method, Py_ssize_t number) if (obj == NULL) return NULL; - obj->ptid = ptid; + obj->thread = thread; obj->method = method; obj->number = number; @@ -405,7 +406,7 @@ recpy_element_richcompare (PyObject *self, PyObject *other, int op) switch (op) { case Py_EQ: - if (ptid_equal (obj1->ptid, obj2->ptid) + if (obj1->thread == obj2->thread && obj1->method == obj2->method && obj1->number == obj2->number) Py_RETURN_TRUE; @@ -413,7 +414,7 @@ recpy_element_richcompare (PyObject *self, PyObject *other, int op) Py_RETURN_FALSE; case Py_NE: - if (!ptid_equal (obj1->ptid, obj2->ptid) + if (obj1->thread != obj2->thread || obj1->method != obj2->method || obj1->number != obj2->number) Py_RETURN_TRUE; @@ -626,8 +627,8 @@ gdbpy_current_recording (PyObject *self, PyObject *args) Py_RETURN_NONE; ret = PyObject_New (recpy_record_object, &recpy_record_type); - ret->ptid = inferior_ptid; - ret->method = target_record_method (inferior_ptid); + ret->thread = inferior_thread (); + ret->method = target_record_method (ret->thread->ptid); return (PyObject *) ret; } diff --git a/gdb/python/py-record.h b/gdb/python/py-record.h index 254ba9e..a24916d 100644 --- a/gdb/python/py-record.h +++ b/gdb/python/py-record.h @@ -29,8 +29,8 @@ typedef struct { PyObject_HEAD - /* The ptid this object refers to. */ - ptid_t ptid; + /* The thread this object refers to. */ + thread_info *thread; /* The current recording method. */ enum record_method method; @@ -43,8 +43,8 @@ typedef struct { PyObject_HEAD - /* The ptid this object refers to. */ - ptid_t ptid; + /* The thread this object refers to. */ + thread_info *thread; /* The current recording method. */ enum record_method method; @@ -60,11 +60,11 @@ extern PyTypeObject recpy_insn_type; extern PyTypeObject recpy_func_type; /* Create a new gdb.RecordInstruction object. */ -extern PyObject *recpy_insn_new (ptid_t ptid, enum record_method method, +extern PyObject *recpy_insn_new (thread_info *thread, enum record_method method, Py_ssize_t number); /* Create a new gdb.RecordFunctionSegment object. */ -extern PyObject *recpy_func_new (ptid_t ptid, enum record_method method, +extern PyObject *recpy_func_new (thread_info *thread, enum record_method method, Py_ssize_t number); /* Create a new gdb.RecordGap object. */ diff --git a/gdb/python/py-threadevent.c b/gdb/python/py-threadevent.c index 968a157..d6aa946 100644 --- a/gdb/python/py-threadevent.c +++ b/gdb/python/py-threadevent.c @@ -18,6 +18,7 @@ #include "defs.h" #include "py-event.h" #include "infrun.h" +#include "gdbthread.h" /* thread events can either be thread specific or process wide. If gdb is running in non-stop mode then the event is thread specific, otherwise @@ -31,10 +32,10 @@ static PyObject *get_event_thread (void) static PyObject * get_event_thread (void) { - PyObject *thread = NULL; + PyObject *thread; if (non_stop) - thread = (PyObject *) find_thread_object (inferior_ptid); + thread = (PyObject *) thread_to_thread_object (inferior_thread ()); else thread = Py_None; diff --git a/gdb/python/python-internal.h b/gdb/python/python-internal.h index 495655e..c4f0e21 100644 --- a/gdb/python/python-internal.h +++ b/gdb/python/python-internal.h @@ -440,6 +440,8 @@ typedef struct PyObject *inf_obj; } thread_object; +struct inferior_object; + extern struct cmd_list_element *set_python_list; extern struct cmd_list_element *show_python_list; @@ -532,10 +534,9 @@ PyObject *gdbpy_lookup_objfile (PyObject *self, PyObject *args, PyObject *kw); PyObject *gdbarch_to_arch_object (struct gdbarch *gdbarch); thread_object *create_thread_object (struct thread_info *tp); -thread_object *find_thread_object (ptid_t ptid) - CPYCHECKER_RETURNS_BORROWED_REF; -PyObject *find_inferior_object (int pid); -PyObject *inferior_to_inferior_object (struct inferior *inferior); +thread_object *thread_to_thread_object (thread_info *thr) + CPYCHECKER_RETURNS_BORROWED_REF; +inferior_object *inferior_to_inferior_object (inferior *inf); const struct block *block_object_to_block (PyObject *obj); struct symbol *symbol_object_to_symbol (PyObject *obj); diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c index f3bf68c..12d98d4 100644 --- a/gdb/record-btrace.c +++ b/gdb/record-btrace.c @@ -39,6 +39,7 @@ #include "event-loop.h" #include "inf-loop.h" #include "vec.h" +#include "inferior.h" #include <algorithm> static const target_info record_btrace_target_info = { @@ -244,14 +245,13 @@ record_btrace_get_cpu (void) static struct thread_info * require_btrace_thread (void) { - struct thread_info *tp; - DEBUG ("require"); - tp = find_thread_ptid (inferior_ptid); - if (tp == NULL) + if (inferior_ptid == null_ptid) error (_("No thread.")); + thread_info *tp = inferior_thread (); + validate_registers_access (); btrace_fetch (tp, record_btrace_get_cpu ()); @@ -1778,8 +1778,7 @@ record_btrace_frame_sniffer (const struct frame_unwind *self, struct frame_info *next; /* THIS_FRAME does not contain a reference to its thread. */ - tp = find_thread_ptid (inferior_ptid); - gdb_assert (tp != NULL); + tp = inferior_thread (); bfun = NULL; next = get_next_frame (this_frame); @@ -1845,7 +1844,7 @@ record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) return 0; - tinfo = find_thread_ptid (inferior_ptid); + tinfo = inferior_thread (); if (btrace_find_call_by_number (&it, &tinfo->btrace, callee->up) == 0) return 0; @@ -1977,9 +1976,11 @@ get_thread_current_frame (struct thread_info *tp) ptid_t old_inferior_ptid; int executing; - /* Set INFERIOR_PTID, which is implicitly used by get_current_frame. */ - old_inferior_ptid = inferior_ptid; - inferior_ptid = tp->ptid; + /* Set current thread, which is implicitly used by + get_current_frame. */ + scoped_restore_current_thread restore_thread; + + switch_to_thread (tp); /* Clear the executing flag to allow changes to the current frame. We are not actually running, yet. We just started a reverse execution @@ -1988,8 +1989,8 @@ get_thread_current_frame (struct thread_info *tp) For the former, EXECUTING is true and we're in wait, about to move the thread. Since we need to recompute the stack, we temporarily set EXECUTING to flase. */ - executing = is_executing (inferior_ptid); - set_executing (inferior_ptid, 0); + executing = tp->executing; + set_executing (inferior_ptid, false); frame = NULL; TRY @@ -2001,9 +2002,6 @@ get_thread_current_frame (struct thread_info *tp) /* Restore the previous execution state. */ set_executing (inferior_ptid, executing); - /* Restore the previous inferior_ptid. */ - inferior_ptid = old_inferior_ptid; - throw_exception (except); } END_CATCH @@ -2011,9 +2009,6 @@ get_thread_current_frame (struct thread_info *tp) /* Restore the previous execution state. */ set_executing (inferior_ptid, executing); - /* Restore the previous inferior_ptid. */ - inferior_ptid = old_inferior_ptid; - return frame; } @@ -2073,7 +2068,7 @@ record_btrace_start_replaying (struct thread_info *tp) btinfo->replay = replay; /* Make sure we're not using any stale registers. */ - registers_changed_ptid (tp->ptid); + registers_changed_thread (tp); /* The current frame with replaying - computed via btrace unwind. */ frame = get_thread_current_frame (tp); @@ -2090,7 +2085,7 @@ record_btrace_start_replaying (struct thread_info *tp) xfree (btinfo->replay); btinfo->replay = NULL; - registers_changed_ptid (tp->ptid); + registers_changed_thread (tp); throw_exception (except); } @@ -2112,7 +2107,7 @@ record_btrace_stop_replaying (struct thread_info *tp) btinfo->replay = NULL; /* Make sure we're not leaving any stale registers. */ - registers_changed_ptid (tp->ptid); + registers_changed_thread (tp); } /* Stop replaying TP if it is at the end of its execution history. */ @@ -2334,7 +2329,6 @@ record_btrace_replay_at_breakpoint (struct thread_info *tp) struct btrace_insn_iterator *replay; struct btrace_thread_info *btinfo; const struct btrace_insn *insn; - struct inferior *inf; btinfo = &tp->btrace; replay = btinfo->replay; @@ -2346,11 +2340,7 @@ record_btrace_replay_at_breakpoint (struct thread_info *tp) if (insn == NULL) return 0; - inf = find_inferior_ptid (tp->ptid); - if (inf == NULL) - return 0; - - return record_check_stopped_by_breakpoint (inf->aspace, insn->pc, + return record_check_stopped_by_breakpoint (tp->inf->aspace, insn->pc, &btinfo->stop_reason); } @@ -2664,7 +2654,7 @@ record_btrace_target::wait (ptid_t ptid, struct target_waitstatus *status, record_btrace_clear_histories (&eventing->btrace); /* We moved the replay position but did not update registers. */ - registers_changed_ptid (eventing->ptid); + registers_changed_thread (eventing); DEBUG ("wait ended by thread %s (%s): %s", print_thread_id (eventing), @@ -2782,7 +2772,7 @@ record_btrace_target::thread_alive (ptid_t ptid) { /* We don't add or remove threads during replay. */ if (record_is_replaying (minus_one_ptid)) - return find_thread_ptid (ptid) != NULL; + return true; /* Forward the request. */ return this->beneath ()->thread_alive (ptid); @@ -2809,7 +2799,7 @@ record_btrace_set_replay (struct thread_info *tp, return; *btinfo->replay = *it; - registers_changed_ptid (tp->ptid); + registers_changed_thread (tp); } /* Start anew from the new replay position. */ diff --git a/gdb/record-full.c b/gdb/record-full.c index 6465ab5..23bab31 100644 --- a/gdb/record-full.c +++ b/gdb/record-full.c @@ -21,6 +21,7 @@ #include "gdbcmd.h" #include "regcache.h" #include "gdbthread.h" +#include "inferior.h" #include "event-top.h" #include "completer.h" #include "arch-utils.h" diff --git a/gdb/regcache.c b/gdb/regcache.c index 536322b..1bc4f0d 100644 --- a/gdb/regcache.c +++ b/gdb/regcache.c @@ -19,6 +19,7 @@ #include "defs.h" #include "inferior.h" +#include "gdbthread.h" #include "target.h" #include "gdbarch.h" #include "gdbcmd.h" @@ -390,10 +391,18 @@ get_thread_regcache (ptid_t ptid) return get_thread_arch_regcache (ptid, current_thread_arch); } +/* See regcache.h. */ + +struct regcache * +get_thread_regcache (thread_info *thread) +{ + return get_thread_regcache (thread->ptid); +} + struct regcache * get_current_regcache (void) { - return get_thread_regcache (inferior_ptid); + return get_thread_regcache (inferior_thread ()); } /* See common/common-regcache.h. */ @@ -466,6 +475,14 @@ registers_changed_ptid (ptid_t ptid) } } +/* See regcache.h. */ + +void +registers_changed_thread (thread_info *thread) +{ + registers_changed_ptid (thread->ptid); +} + void registers_changed (void) { diff --git a/gdb/regcache.h b/gdb/regcache.h index 5e96a7a..983137f 100644 --- a/gdb/regcache.h +++ b/gdb/regcache.h @@ -30,6 +30,10 @@ struct address_space; extern struct regcache *get_current_regcache (void); extern struct regcache *get_thread_regcache (ptid_t ptid); + +/* Get the regcache of THREAD. */ +extern struct regcache *get_thread_regcache (thread_info *thread); + extern struct regcache *get_thread_arch_regcache (ptid_t, struct gdbarch *); extern struct regcache *get_thread_arch_aspace_regcache (ptid_t, struct gdbarch *, @@ -349,6 +353,7 @@ public: static void regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid); protected: regcache (gdbarch *gdbarch, const address_space *aspace_); + static std::forward_list<regcache *> current_regcache; private: @@ -401,6 +406,10 @@ public: extern void registers_changed (void); extern void registers_changed_ptid (ptid_t); +/* Indicate that registers of THREAD may have changed, so invalidate + the cache. */ +extern void registers_changed_thread (thread_info *thread); + /* An abstract base class for register dump. */ class register_dump diff --git a/gdb/remote.c b/gdb/remote.c index 7cef0cf..3b54715 100644 --- a/gdb/remote.c +++ b/gdb/remote.c @@ -737,7 +737,7 @@ public: /* Remote specific methods. */ ptid_t ptid); static void open_1 (const char *name, int from_tty, int extended_p); void start_remote (int from_tty, int extended_p); - void remote_detach_1 (int from_tty, struct inferior *inf); + void remote_detach_1 (struct inferior *inf, int from_tty); char *append_resumption (char *p, char *endp, ptid_t ptid, int step, gdb_signal siggnal); @@ -758,7 +758,7 @@ public: /* Remote specific methods. */ void process_initial_stop_replies (int from_tty); - void remote_add_thread (ptid_t ptid, bool running, bool executing); + thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing); void btrace_sync_conf (const btrace_config *conf); @@ -2374,11 +2374,12 @@ remote_target::remote_add_inferior (int fake_pid_p, int pid, int attached, } static remote_thread_info *get_remote_thread_info (thread_info *thread); +static remote_thread_info *get_remote_thread_info (ptid_t ptid); /* Add thread PTID to GDB's thread list. Tag it as executing/running according to RUNNING. */ -void +thread_info * remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing) { struct remote_state *rs = get_remote_state (); @@ -2398,6 +2399,8 @@ remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing) get_remote_thread_info (thread)->vcont_resumed = executing; set_executing (ptid, executing); set_running (ptid, running); + + return thread; } /* Come here when we learn about a thread id from the remote target. @@ -2418,7 +2421,8 @@ remote_target::remote_notice_new_inferior (ptid_t currthread, int executing) /* If this is a new thread, add it to GDB's thread list. If we leave it up to WFI to do this, bad things will happen. */ - if (in_thread_list (currthread) && is_exited (currthread)) + thread_info *tp = find_thread_ptid (currthread); + if (tp != NULL && tp->state == THREAD_EXITED) { /* We're seeing an event on a thread id we knew had exited. This has to be a new thread reusing the old id. Add it. */ @@ -2464,7 +2468,7 @@ remote_target::remote_notice_new_inferior (ptid_t currthread, int executing) extended-remote which already was debugging an inferior, we may not know about it yet. Add it before adding its child thread, so notifications are emitted in a sensible order. */ - if (!in_inferior_list (ptid_get_pid (currthread))) + if (find_inferior_pid (ptid_get_pid (currthread)) == NULL) { struct remote_state *rs = get_remote_state (); int fake_pid_p = !remote_multi_process_p (rs); @@ -2474,7 +2478,8 @@ remote_target::remote_notice_new_inferior (ptid_t currthread, int executing) } /* This is really a new thread. Add it. */ - remote_add_thread (currthread, running, executing); + thread_info *new_thr + = remote_add_thread (currthread, running, executing); /* If we found a new inferior, let the common code do whatever it needs to with it (e.g., read shared libraries, insert @@ -2485,7 +2490,7 @@ remote_target::remote_notice_new_inferior (ptid_t currthread, int executing) struct remote_state *rs = get_remote_state (); if (!rs->starting_up) - notice_new_inferior (currthread, executing, 0); + notice_new_inferior (new_thr, executing, 0); } } } @@ -2503,14 +2508,11 @@ get_remote_thread_info (thread_info *thread) return static_cast<remote_thread_info *> (thread->priv.get ()); } -/* Return PTID's private thread data, creating it if necessary. */ - static remote_thread_info * get_remote_thread_info (ptid_t ptid) { - struct thread_info *info = find_thread_ptid (ptid); - - return get_remote_thread_info (info); + thread_info *thr = find_thread_ptid (ptid); + return get_remote_thread_info (thr); } /* Call this function as a result of @@ -3773,7 +3775,7 @@ remote_target::update_thread_list () if (!context.contains_thread (tp->ptid)) { /* Not found. */ - delete_thread (tp->ptid); + delete_thread (tp); } } @@ -3795,7 +3797,8 @@ remote_target::update_thread_list () remote_notice_new_inferior (item.ptid, executing); - remote_thread_info *info = get_remote_thread_info (item.ptid); + thread_info *tp = find_thread_ptid (item.ptid); + remote_thread_info *info = get_remote_thread_info (tp); info->core = item.core; info->extra = std::move (item.extra); info->name = std::move (item.name); @@ -3846,11 +3849,9 @@ remote_target::extra_thread_info (thread_info *tp) if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) { - struct thread_info *info = find_thread_ptid (tp->ptid); - - if (info != NULL && info->priv != NULL) + if (tp->priv != NULL) { - const std::string &extra = get_remote_thread_info (info)->extra; + const std::string &extra = get_remote_thread_info (tp)->extra; return !extra.empty () ? extra.c_str () : NULL; } else @@ -4329,7 +4330,7 @@ print_one_stopped_thread (struct thread_info *thread) { struct target_waitstatus *ws = &thread->suspend.waitstatus; - switch_to_thread (thread->ptid); + switch_to_thread (thread); stop_pc = get_frame_pc (get_current_frame ()); set_current_sal_from_frame (get_current_frame ()); @@ -4432,9 +4433,8 @@ remote_target::process_initial_stop_replies (int from_tty) if (non_stop) { - thread = any_live_thread_of_process (inf->pid); - notice_new_inferior (thread->ptid, - thread->state == THREAD_RUNNING, + thread = any_live_thread_of_inferior (inf); + notice_new_inferior (thread, thread->state == THREAD_RUNNING, from_tty); } } @@ -4455,7 +4455,7 @@ remote_target::process_initial_stop_replies (int from_tty) if (inf->needs_setup) { - thread = any_live_thread_of_process (inf->pid); + thread = any_live_thread_of_inferior (inf); switch_to_thread_no_regs (thread); setup_inferior (0); } @@ -4471,7 +4471,7 @@ remote_target::process_initial_stop_replies (int from_tty) first = thread; if (!non_stop) - set_running (thread->ptid, 0); + thread->set_running (false); else if (thread->state != THREAD_STOPPED) continue; @@ -5654,11 +5654,10 @@ remote_target::remote_detach_pid (int pid) one. */ void -remote_target::remote_detach_1 (int from_tty, inferior *inf) +remote_target::remote_detach_1 (inferior *inf, int from_tty) { int pid = ptid_get_pid (inferior_ptid); struct remote_state *rs = get_remote_state (); - struct thread_info *tp = find_thread_ptid (inferior_ptid); int is_fork_parent; if (!target_has_execution) @@ -5673,6 +5672,8 @@ remote_target::remote_detach_1 (int from_tty, inferior *inf) if (from_tty && !rs->extended && number_of_live_inferiors () == 1) puts_filtered (_("Ending remote debugging.\n")); + struct thread_info *tp = find_thread_ptid (inferior_ptid); + /* Check to see if we are detaching a fork parent. Note that if we are detaching a fork child, tp == NULL. */ is_fork_parent = (tp != NULL @@ -5694,20 +5695,20 @@ remote_target::remote_detach_1 (int from_tty, inferior *inf) else { inferior_ptid = null_ptid; - detach_inferior (pid); + detach_inferior (current_inferior ()); } } void remote_target::detach (inferior *inf, int from_tty) { - remote_detach_1 (from_tty, inf); + remote_detach_1 (inf, from_tty); } void extended_remote_target::detach (inferior *inf, int from_tty) { - remote_detach_1 (from_tty, inf); + remote_detach_1 (inf, from_tty); } /* Target follow-fork function for remote targets. On entry, and @@ -5851,7 +5852,7 @@ extended_remote_target::attach (const char *args, int from_tty) /* Get list of threads. */ update_thread_list (); - thread = first_thread_of_process (pid); + thread = first_thread_of_inferior (current_inferior ()); if (thread) inferior_ptid = thread->ptid; else diff --git a/gdb/s390-linux-tdep.c b/gdb/s390-linux-tdep.c index cd840c8..d9ac40b 100644 --- a/gdb/s390-linux-tdep.c +++ b/gdb/s390-linux-tdep.c @@ -557,9 +557,9 @@ static const struct frame_unwind s390_sigtramp_frame_unwind = { static LONGEST s390_linux_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) + thread_info *thread) { - struct regcache *regs = get_thread_regcache (ptid); + struct regcache *regs = get_thread_regcache (thread); struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); ULONGEST pc; diff --git a/gdb/sparc-linux-tdep.c b/gdb/sparc-linux-tdep.c index 00f4513..0933a44 100644 --- a/gdb/sparc-linux-tdep.c +++ b/gdb/sparc-linux-tdep.c @@ -274,9 +274,9 @@ sparc_linux_write_pc (struct regcache *regcache, CORE_ADDR pc) static LONGEST sparc32_linux_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) + thread_info *thread) { - struct regcache *regcache = get_thread_regcache (ptid); + struct regcache *regcache = get_thread_regcache (thread); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); /* The content of a register. */ gdb_byte buf[4]; diff --git a/gdb/sparc64-linux-tdep.c b/gdb/sparc64-linux-tdep.c index 8810c80..6451ffd 100644 --- a/gdb/sparc64-linux-tdep.c +++ b/gdb/sparc64-linux-tdep.c @@ -282,9 +282,9 @@ sparc64_linux_write_pc (struct regcache *regcache, CORE_ADDR pc) static LONGEST sparc64_linux_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) + thread_info *thread) { - struct regcache *regcache = get_thread_regcache (ptid); + struct regcache *regcache = get_thread_regcache (thread); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); /* The content of a register. */ gdb_byte buf[8]; diff --git a/gdb/stack.c b/gdb/stack.c index 97ebc8b..9426d4f 100644 --- a/gdb/stack.c +++ b/gdb/stack.c @@ -134,7 +134,7 @@ frame_show_address (struct frame_info *frame, if (sal.line != 0 && sal.pc == 0 && sal.end == 0) { if (get_next_frame (frame) == NULL) - gdb_assert (inline_skipped_frames (inferior_ptid) > 0); + gdb_assert (inline_skipped_frames (inferior_thread ()) > 0); else gdb_assert (get_frame_type (get_next_frame (frame)) == INLINE_FRAME); return 0; diff --git a/gdb/target-debug.h b/gdb/target-debug.h index 5f3001b..534e429 100644 --- a/gdb/target-debug.h +++ b/gdb/target-debug.h @@ -182,6 +182,8 @@ target_debug_do_print (plongest (X)) #define target_debug_print_thread_info_p(X) \ target_debug_do_print (host_address_to_string (X)) +#define target_debug_print_thread_info_pp(X) \ + target_debug_do_print (host_address_to_string (X)) static void target_debug_print_struct_target_waitstatus_p (struct target_waitstatus *status) diff --git a/gdb/target.c b/gdb/target.c index a1fe8f9..a082957 100644 --- a/gdb/target.c +++ b/gdb/target.c @@ -1128,7 +1128,7 @@ memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, return TARGET_XFER_E_IO; if (!ptid_equal (inferior_ptid, null_ptid)) - inf = find_inferior_ptid (inferior_ptid); + inf = current_inferior (); else inf = NULL; @@ -2025,12 +2025,10 @@ target_pre_inferior (int from_tty) static int dispose_inferior (struct inferior *inf, void *args) { - struct thread_info *thread; - - thread = any_thread_of_process (inf->pid); - if (thread) + thread_info *thread = any_thread_of_inferior (inf); + if (thread != NULL) { - switch_to_thread (thread->ptid); + switch_to_thread (thread); /* Core inferiors actually should be detached, not killed. */ if (target_has_execution) @@ -2087,8 +2085,8 @@ target_detach (inferior *inf, int from_tty) ; else /* If we're in breakpoints-always-inserted mode, have to remove - them before detaching. */ - remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); + breakpoints before detaching. */ + remove_breakpoints_inf (current_inferior ()); prepare_for_detach (); @@ -3252,9 +3250,8 @@ target_announce_detach (int from_tty) void generic_mourn_inferior (void) { - ptid_t ptid; + inferior *inf = current_inferior (); - ptid = inferior_ptid; inferior_ptid = null_ptid; /* Mark breakpoints uninserted in case something tries to delete a @@ -3262,11 +3259,8 @@ generic_mourn_inferior (void) fail, since the inferior is long gone). */ mark_breakpoints_out (); - if (!ptid_equal (ptid, null_ptid)) - { - int pid = ptid_get_pid (ptid); - exit_inferior (pid); - } + if (inf->pid != 0) + exit_inferior (inf); /* Note this wipes step-resume breakpoints, so needs to be done after exit_inferior, which ends up referencing the step-resume diff --git a/gdb/thread.c b/gdb/thread.c index f5a29f5..2b471cd 100644 --- a/gdb/thread.c +++ b/gdb/thread.c @@ -220,16 +220,12 @@ set_thread_exited (thread_info *tp, int silent) void init_thread_list (void) { - struct thread_info *tp, *tpnext; + struct thread_info *tp, *tmp; highest_thread_num = 0; - if (!thread_list) - return; - - for (tp = thread_list; tp; tp = tpnext) + ALL_THREADS_SAFE (tp, tmp) { - tpnext = tp->next; if (tp->deletable ()) delete tp; else @@ -285,28 +281,28 @@ add_thread_silent (ptid_t ptid) if (inferior_ptid == ptid) { - tp = new_thread (inf, null_ptid); + thread_info *new_thr = new_thread (inf, null_ptid); /* Make switch_to_thread not read from the thread. */ - tp->state = THREAD_EXITED; - switch_to_thread (null_ptid); + new_thr->state = THREAD_EXITED; + switch_to_no_thread (); /* Now we can delete it. */ - delete_thread (ptid); + delete_thread (tp); /* Now reset its ptid, and reswitch inferior_ptid to it. */ - tp->ptid = ptid; - tp->state = THREAD_STOPPED; - switch_to_thread (ptid); + new_thr->ptid = ptid; + new_thr->state = THREAD_STOPPED; + switch_to_thread (new_thr); - gdb::observers::new_thread.notify (tp); + gdb::observers::new_thread.notify (new_thr); /* All done. */ - return tp; + return new_thr; } else /* Just go ahead and delete it. */ - delete_thread (ptid); + delete_thread (tp); } tp = new_thread (inf, ptid); @@ -436,17 +432,18 @@ thread_step_over_chain_remove (struct thread_info *tp) step_over_chain_remove (&step_over_queue_head, tp); } -/* Delete thread PTID. If SILENT, don't notify the observer of this +/* Delete thread TP. If SILENT, don't notify the observer of this exit. */ + static void -delete_thread_1 (ptid_t ptid, int silent) +delete_thread_1 (thread_info *thr, bool silent) { struct thread_info *tp, *tpprev; tpprev = NULL; for (tp = thread_list; tp; tpprev = tp, tp = tp->next) - if (tp->ptid == ptid) + if (tp == thr) break; if (!tp) @@ -468,20 +465,21 @@ delete_thread_1 (ptid_t ptid, int silent) delete tp; } -/* Delete thread PTID and notify of thread exit. If this is - inferior_ptid, don't actually delete it, but tag it as exited and - do the notification. If PTID is the user selected thread, clear +/* Delete thread THREAD and notify of thread exit. If this is the + current thread, don't actually delete it, but tag it as exited and + do the notification. If this is the user selected thread, clear it. */ + void -delete_thread (ptid_t ptid) +delete_thread (thread_info *thread) { - delete_thread_1 (ptid, 0 /* not silent */); + delete_thread_1 (thread, false /* not silent */); } void -delete_thread_silent (ptid_t ptid) +delete_thread_silent (thread_info *thread) { - delete_thread_1 (ptid, 1 /* silent */); + delete_thread_1 (thread, true /* silent */); } struct thread_info * @@ -602,29 +600,6 @@ valid_global_thread_id (int global_id) } int -ptid_to_global_thread_id (ptid_t ptid) -{ - struct thread_info *tp; - - for (tp = thread_list; tp; tp = tp->next) - if (tp->ptid == ptid) - return tp->global_num; - - return 0; -} - -ptid_t -global_thread_id_to_ptid (int global_id) -{ - struct thread_info *thread = find_thread_global_id (global_id); - - if (thread) - return thread->ptid; - else - return minus_one_ptid; -} - -int in_thread_list (ptid_t ptid) { struct thread_info *tp; @@ -636,51 +611,50 @@ in_thread_list (ptid_t ptid) return 0; /* Never heard of 'im. */ } -/* Finds the first thread of the inferior given by PID. If PID is -1, - return the first thread in the list. */ +/* Finds the first thread of the inferior. */ -struct thread_info * -first_thread_of_process (int pid) +thread_info * +first_thread_of_inferior (inferior *inf) { struct thread_info *tp, *ret = NULL; for (tp = thread_list; tp; tp = tp->next) - if (pid == -1 || ptid_get_pid (tp->ptid) == pid) + if (tp->inf == inf) if (ret == NULL || tp->global_num < ret->global_num) ret = tp; return ret; } -struct thread_info * -any_thread_of_process (int pid) +thread_info * +any_thread_of_inferior (inferior *inf) { struct thread_info *tp; - gdb_assert (pid != 0); + gdb_assert (inf->pid != 0); /* Prefer the current thread. */ - if (ptid_get_pid (inferior_ptid) == pid) + if (inf == current_inferior ()) return inferior_thread (); ALL_NON_EXITED_THREADS (tp) - if (ptid_get_pid (tp->ptid) == pid) + if (tp->inf == inf) return tp; return NULL; } -struct thread_info * -any_live_thread_of_process (int pid) +thread_info * +any_live_thread_of_inferior (inferior *inf) { struct thread_info *curr_tp = NULL; struct thread_info *tp; struct thread_info *tp_executing = NULL; - gdb_assert (pid != 0); + gdb_assert (inf != NULL && inf->pid != 0); /* Prefer the current thread if it's not executing. */ - if (ptid_get_pid (inferior_ptid) == pid) + if (inferior_ptid != null_ptid && current_inferior () == inf) { /* If the current thread is dead, forget it. If it's not executing, use it. Otherwise, still choose it (below), but @@ -693,7 +667,7 @@ any_live_thread_of_process (int pid) } ALL_NON_EXITED_THREADS (tp) - if (ptid_get_pid (tp->ptid) == pid) + if (tp->inf == inf) { if (!tp->executing) return tp; @@ -731,7 +705,7 @@ prune_threads (void) ALL_THREADS_SAFE (tp, tmp) { if (!thread_alive (tp)) - delete_thread (tp->ptid); + delete_thread (tp); } } @@ -745,18 +719,16 @@ delete_exited_threads (void) ALL_THREADS_SAFE (tp, tmp) { if (tp->state == THREAD_EXITED) - delete_thread (tp->ptid); + delete_thread (tp); } } /* Return true value if stack temporaies are enabled for the thread - with id PTID. */ + TP. */ bool -thread_stack_temporaries_enabled_p (ptid_t ptid) +thread_stack_temporaries_enabled_p (thread_info *tp) { - struct thread_info *tp = find_thread_ptid (ptid); - if (tp == NULL) return false; else @@ -766,22 +738,18 @@ thread_stack_temporaries_enabled_p (ptid_t ptid) /* Push V on to the stack temporaries of the thread with id PTID. */ void -push_thread_stack_temporary (ptid_t ptid, struct value *v) +push_thread_stack_temporary (thread_info *tp, struct value *v) { - struct thread_info *tp = find_thread_ptid (ptid); - gdb_assert (tp != NULL && tp->stack_temporaries_enabled); tp->stack_temporaries.push_back (v); } /* Return true if VAL is among the stack temporaries of the thread - with id PTID. Return false otherwise. */ + TP. Return false otherwise. */ bool -value_in_thread_stack_temporaries (struct value *val, ptid_t ptid) +value_in_thread_stack_temporaries (struct value *val, thread_info *tp) { - struct thread_info *tp = find_thread_ptid (ptid); - gdb_assert (tp != NULL && tp->stack_temporaries_enabled); for (value *v : tp->stack_temporaries) if (v == val) @@ -793,11 +761,10 @@ value_in_thread_stack_temporaries (struct value *val, ptid_t ptid) /* Return the last of the stack temporaries for thread with id PTID. Return NULL if there are no stack temporaries for the thread. */ -struct value * -get_last_thread_stack_temporary (ptid_t ptid) +value * +get_last_thread_stack_temporary (thread_info *tp) { struct value *lastval = NULL; - struct thread_info *tp = find_thread_ptid (ptid); gdb_assert (tp != NULL); if (!tp->stack_temporaries.empty ()) @@ -870,6 +837,15 @@ set_running_thread (struct thread_info *tp, int running) return started; } +/* See gdbthread.h. */ + +void +thread_info::set_running (bool running) +{ + if (set_running_thread (this, running)) + gdb::observers::target_resumed.notify (this->ptid); +} + void set_running (ptid_t ptid, int running) { @@ -1049,8 +1025,10 @@ validate_registers_access (void) if (inferior_ptid == null_ptid) error (_("No thread selected.")); + thread_info *tp = inferior_thread (); + /* Don't try to read from a dead thread. */ - if (is_exited (inferior_ptid)) + if (tp->state == THREAD_EXITED) error (_("The current thread has terminated")); /* ... or from a spinning thread. FIXME: This isn't actually fully @@ -1058,25 +1036,25 @@ validate_registers_access (void) at the prompt) when a thread is not executing for some internal reason, but is marked running from the user's perspective. E.g., the thread is waiting for its turn in the step-over queue. */ - if (is_executing (inferior_ptid)) + if (tp->executing) error (_("Selected thread is running.")); } /* See gdbthread.h. */ bool -can_access_registers_ptid (ptid_t ptid) +can_access_registers_thread (thread_info *thread) { /* No thread, no registers. */ - if (ptid == null_ptid) + if (thread == NULL) return false; /* Don't try to read from a dead thread. */ - if (is_exited (ptid)) + if (thread->state == THREAD_EXITED) return false; /* ... or from a spinning thread. FIXME: see validate_registers_access. */ - if (is_executing (ptid)) + if (thread->executing) return false; return true; @@ -1139,13 +1117,19 @@ print_thread_info_1 (struct ui_out *uiout, const char *requested_threads, int show_global_ids) { struct thread_info *tp; - ptid_t current_ptid; const char *extra_info, *name, *target_id; struct inferior *inf; int default_inf_num = current_inferior ()->num; update_thread_list (); - current_ptid = inferior_ptid; + + /* Whether we saw any thread. */ + bool any_thread = false; + /* Whether the current thread is exited. */ + bool current_exited = false; + + thread_info *current_thread = (inferior_ptid != null_ptid + ? inferior_thread () : NULL); { /* For backward compatibility, we make a list for MI. A table is @@ -1160,7 +1144,7 @@ print_thread_info_1 (struct ui_out *uiout, const char *requested_threads, { int n_threads = 0; - for (tp = thread_list; tp; tp = tp->next) + ALL_THREADS (tp) { if (!should_print_thread (requested_threads, default_inf_num, global_ids, pid, tp)) @@ -1198,6 +1182,10 @@ print_thread_info_1 (struct ui_out *uiout, const char *requested_threads, { int core; + any_thread = true; + if (tp == current_thread && tp->state == THREAD_EXITED) + current_exited = true; + if (!should_print_thread (requested_threads, default_inf_num, global_ids, pid, tp)) continue; @@ -1206,7 +1194,7 @@ print_thread_info_1 (struct ui_out *uiout, const char *requested_threads, if (!uiout->is_mi_like_p ()) { - if (tp->ptid == current_ptid) + if (tp == current_thread) uiout->field_string ("current", "*"); else uiout->field_skip ("current"); @@ -1259,7 +1247,7 @@ print_thread_info_1 (struct ui_out *uiout, const char *requested_threads, { /* The switch below puts us at the top of the stack (leaf frame). */ - switch_to_thread (tp->ptid); + switch_to_thread (tp); print_stack_frame (get_selected_frame (NULL), /* For MI output, print frame level. */ uiout->is_mi_like_p (), @@ -1287,20 +1275,14 @@ print_thread_info_1 (struct ui_out *uiout, const char *requested_threads, if (pid == -1 && requested_threads == NULL) { - if (uiout->is_mi_like_p () - && inferior_ptid != null_ptid) - { - int num = ptid_to_global_thread_id (inferior_ptid); + if (uiout->is_mi_like_p () && inferior_ptid != null_ptid) + uiout->field_int ("current-thread-id", current_thread->global_num); - gdb_assert (num != 0); - uiout->field_int ("current-thread-id", num); - } - - if (inferior_ptid != null_ptid && is_exited (inferior_ptid)) + if (inferior_ptid != null_ptid && current_exited) uiout->message ("\n\ The current thread <Thread ID %s> has terminated. See `help thread'.\n", print_thread_id (inferior_thread ())); - else if (thread_list != NULL && inferior_ptid == null_ptid) + else if (any_thread && inferior_ptid == null_ptid) uiout->message ("\n\ No selected thread. See `help thread'.\n"); } @@ -1349,9 +1331,9 @@ switch_to_thread_no_regs (struct thread_info *thread) stop_pc = ~(CORE_ADDR) 0; } -/* Switch to no thread selected. */ +/* See gdbthread.h. */ -static void +void switch_to_no_thread () { if (inferior_ptid == null_ptid) @@ -1362,9 +1344,9 @@ switch_to_no_thread () stop_pc = ~(CORE_ADDR) 0; } -/* Switch from one thread to another. */ +/* See gdbthread.h. */ -static void +void switch_to_thread (thread_info *thr) { gdb_assert (thr != NULL); @@ -1381,18 +1363,16 @@ switch_to_thread (thread_info *thr) internal event. */ if (thr->state != THREAD_EXITED && !thr->executing) - stop_pc = regcache_read_pc (get_thread_regcache (thr->ptid)); + stop_pc = regcache_read_pc (get_thread_regcache (thr)); } -/* See gdbthread.h. */ +/* See common/common-gdbthread.h. */ void switch_to_thread (ptid_t ptid) { - if (ptid == null_ptid) - switch_to_no_thread (); - else - switch_to_thread (find_thread_ptid (ptid)); + thread_info *thr = find_thread_ptid (ptid); + switch_to_thread (thr); } static void @@ -1476,7 +1456,7 @@ scoped_restore_current_thread::~scoped_restore_current_thread () changed, so we have to recheck it here. */ if (inferior_ptid != null_ptid && m_was_stopped - && is_stopped (inferior_ptid) + && m_thread->state == THREAD_STOPPED && target_has_registers && target_has_stack && target_has_memory) @@ -1494,11 +1474,9 @@ scoped_restore_current_thread::scoped_restore_current_thread () if (inferior_ptid != null_ptid) { - thread_info *tp = find_thread_ptid (inferior_ptid); + thread_info *tp = inferior_thread (); struct frame_info *frame; - gdb_assert (tp != NULL); - m_was_stopped = tp->state == THREAD_STOPPED; if (m_was_stopped && target_has_registers @@ -1638,7 +1616,7 @@ thread_apply_all_command (const char *cmd, int from_tty) for (thread_info *thr : thr_list_cpy) if (thread_alive (thr)) { - switch_to_thread (thr->ptid); + switch_to_thread (thr); printf_filtered (_("\nThread %s (%s):\n"), print_thread_id (thr), target_pid_to_str (inferior_ptid)); @@ -1725,7 +1703,7 @@ thread_apply_command (const char *tidlist, int from_tty) continue; } - switch_to_thread (tp->ptid); + switch_to_thread (tp); printf_filtered (_("\nThread %s (%s):\n"), print_thread_id (tp), target_pid_to_str (inferior_ptid)); @@ -1747,7 +1725,7 @@ thread_command (const char *tidstr, int from_tty) { struct thread_info *tp = inferior_thread (); - if (is_exited (inferior_ptid)) + if (tp->state == THREAD_EXITED) printf_filtered (_("[Current thread is %s (%s) (exited)]\n"), print_thread_id (tp), target_pid_to_str (inferior_ptid)); @@ -1871,7 +1849,7 @@ thread_select (const char *tidstr, thread_info *tp) if (!thread_alive (tp)) error (_("Thread ID %s has terminated."), tidstr); - switch_to_thread (tp->ptid); + switch_to_thread (tp); annotate_thread_changed (); @@ -1954,15 +1932,18 @@ update_thread_list (void) static struct value * thread_num_make_value_helper (struct gdbarch *gdbarch, int global) { - struct thread_info *tp = find_thread_ptid (inferior_ptid); int int_val; - if (tp == NULL) + if (inferior_ptid == null_ptid) int_val = 0; - else if (global) - int_val = tp->global_num; else - int_val = tp->per_inf_num; + { + thread_info *tp = inferior_thread (); + if (global) + int_val = tp->global_num; + else + int_val = tp->per_inf_num; + } return value_from_longest (builtin_type (gdbarch)->builtin_int, int_val); } @@ -646,7 +646,7 @@ execute_command (const char *p, int from_tty) we just finished executing did not resume the inferior's execution. If it did resume the inferior, we will do that check after the inferior stopped. */ - if (has_stack_frames () && !is_running (inferior_ptid)) + if (has_stack_frames () && inferior_thread ()->state != THREAD_RUNNING) check_frame_language_change (); discard_cleanups (cleanup_if_error); @@ -1505,15 +1505,14 @@ static int kill_or_detach (struct inferior *inf, void *args) { struct qt_args *qt = (struct qt_args *) args; - struct thread_info *thread; if (inf->pid == 0) return 0; - thread = any_thread_of_process (inf->pid); + thread_info *thread = any_thread_of_inferior (inf); if (thread != NULL) { - switch_to_thread (thread->ptid); + switch_to_thread (thread); /* Leave core files alone. */ if (target_has_execution) diff --git a/gdb/tracefile-tfile.c b/gdb/tracefile-tfile.c index 28abdcd..0dd9d5f 100644 --- a/gdb/tracefile-tfile.c +++ b/gdb/tracefile-tfile.c @@ -615,14 +615,11 @@ tfile_interp_line (char *line, struct uploaded_tp **utpp, void tfile_target::close () { - int pid; - if (trace_fd < 0) return; - pid = ptid_get_pid (inferior_ptid); inferior_ptid = null_ptid; /* Avoid confusion from thread stuff. */ - exit_inferior_silent (pid); + exit_inferior_silent (current_inferior ()); ::close (trace_fd); trace_fd = -1; diff --git a/gdb/tui/tui-interp.c b/gdb/tui/tui-interp.c index aa5e328..acc8f03 100644 --- a/gdb/tui/tui-interp.c +++ b/gdb/tui/tui-interp.c @@ -33,6 +33,7 @@ #include "infrun.h" #include "observable.h" #include "gdbthread.h" +#include "inferior.h" /* Set to 1 when the TUI mode must be activated when we first start gdb. */ diff --git a/gdb/varobj.c b/gdb/varobj.c index a0df485..0244141 100644 --- a/gdb/varobj.c +++ b/gdb/varobj.c @@ -356,7 +356,7 @@ varobj_create (const char *objname, error (_("Failed to find the specified frame")); var->root->frame = get_frame_id (fi); - var->root->thread_id = ptid_to_global_thread_id (inferior_ptid); + var->root->thread_id = inferior_thread ()->global_num; old_id = get_frame_id (get_selected_frame (NULL)); select_frame (fi); } @@ -2122,11 +2122,11 @@ value_of_root_1 (struct varobj **var_handle) } else { - ptid_t ptid = global_thread_id_to_ptid (var->root->thread_id); + thread_info *thread = find_thread_global_id (var->root->thread_id); - if (!ptid_equal (minus_one_ptid, ptid)) + if (thread != NULL) { - switch_to_thread (ptid); + switch_to_thread (thread); within_scope = check_scope (var); } } |