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Diffstat (limited to 'gdb/gdbserver/linux-low.c')
-rw-r--r--gdb/gdbserver/linux-low.c79
1 files changed, 52 insertions, 27 deletions
diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index 1f7d8d1..cde59a7 100644
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -447,6 +447,8 @@ handle_extended_wait (struct lwp_info **orig_event_lwp, int wstat)
struct thread_info *event_thr = get_lwp_thread (event_lwp);
struct lwp_info *new_lwp;
+ gdb_assert (event_lwp->waitstatus.kind == TARGET_WAITKIND_IGNORE);
+
if ((event == PTRACE_EVENT_FORK) || (event == PTRACE_EVENT_VFORK)
|| (event == PTRACE_EVENT_CLONE))
{
@@ -577,6 +579,12 @@ handle_extended_wait (struct lwp_info **orig_event_lwp, int wstat)
new_lwp->status_pending_p = 1;
new_lwp->status_pending = status;
}
+ else if (report_thread_events)
+ {
+ new_lwp->waitstatus.kind = TARGET_WAITKIND_THREAD_CREATED;
+ new_lwp->status_pending_p = 1;
+ new_lwp->status_pending = status;
+ }
/* Don't report the event. */
return 1;
@@ -2256,25 +2264,22 @@ linux_low_filter_event (int lwpid, int wstat)
{
if (debug_threads)
debug_printf ("LLFE: %d exited.\n", lwpid);
- if (num_lwps (pid_of (thread)) > 1)
+ /* If there is at least one more LWP, then the exit signal was
+ not the end of the debugged application and should be
+ ignored, unless GDB wants to hear about thread exits. */
+ if (report_thread_events
+ || last_thread_of_process_p (pid_of (thread)))
{
-
- /* If there is at least one more LWP, then the exit signal was
- not the end of the debugged application and should be
- ignored. */
- delete_lwp (child);
- return NULL;
+ /* Since events are serialized to GDB core, and we can't
+ report this one right now. Leave the status pending for
+ the next time we're able to report it. */
+ mark_lwp_dead (child, wstat);
+ return child;
}
else
{
- /* This was the last lwp in the process. Since events are
- serialized to GDB core, and we can't report this one
- right now, but GDB core and the other target layers will
- want to be notified about the exit code/signal, leave the
- status pending for the next time we're able to report
- it. */
- mark_lwp_dead (child, wstat);
- return child;
+ delete_lwp (child);
+ return NULL;
}
}
@@ -2617,18 +2622,6 @@ linux_wait_for_event_filtered (ptid_t wait_ptid, ptid_t filter_ptid,
current_thread = event_thread;
- /* Check for thread exit. */
- if (! WIFSTOPPED (*wstatp))
- {
- gdb_assert (last_thread_of_process_p (pid_of (event_thread)));
-
- if (debug_threads)
- debug_printf ("LWP %d is the last lwp of process. "
- "Process %ld exiting.\n",
- pid_of (event_thread), lwpid_of (event_thread));
- return lwpid_of (event_thread);
- }
-
return lwpid_of (event_thread);
}
@@ -2913,6 +2906,30 @@ ignore_event (struct target_waitstatus *ourstatus)
return null_ptid;
}
+/* Convenience function that is called when the kernel reports an exit
+ event. This decides whether to report the event to GDB as a
+ process exit event, a thread exit event, or to suppress the
+ event. */
+
+static ptid_t
+filter_exit_event (struct lwp_info *event_child,
+ struct target_waitstatus *ourstatus)
+{
+ struct thread_info *thread = get_lwp_thread (event_child);
+ ptid_t ptid = ptid_of (thread);
+
+ if (!last_thread_of_process_p (pid_of (thread)))
+ {
+ if (report_thread_events)
+ ourstatus->kind = TARGET_WAITKIND_THREAD_EXITED;
+ else
+ ourstatus->kind = TARGET_WAITKIND_IGNORE;
+
+ delete_lwp (event_child);
+ }
+ return ptid;
+}
+
/* Wait for process, returns status. */
static ptid_t
@@ -3018,6 +3035,9 @@ linux_wait_1 (ptid_t ptid,
}
}
+ if (ourstatus->kind == TARGET_WAITKIND_EXITED)
+ return filter_exit_event (event_child, ourstatus);
+
return ptid_of (current_thread);
}
@@ -3507,6 +3527,9 @@ linux_wait_1 (ptid_t ptid,
debug_exit ();
}
+ if (ourstatus->kind == TARGET_WAITKIND_EXITED)
+ return filter_exit_event (event_child, ourstatus);
+
return ptid_of (current_thread);
}
@@ -3907,6 +3930,8 @@ linux_resume_one_lwp_throw (struct lwp_info *lwp,
if (lwp->stopped == 0)
return;
+ gdb_assert (lwp->waitstatus.kind == TARGET_WAITKIND_IGNORE);
+
fast_tp_collecting = lwp->collecting_fast_tracepoint;
gdb_assert (!stabilizing_threads || fast_tp_collecting);