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authorPedro Alves <palves@redhat.com>2015-08-06 18:22:58 +0100
committerPedro Alves <palves@redhat.com>2015-08-07 17:26:20 +0100
commitbfedc46af315dc6484295699c35e05040d76d700 (patch)
tree8d40b327d379d576de014e255b096d2e5e32ae7e /gdb/target-delegates.c
parentd55007b58352c0b5fd2817e003b6dcf4e3ee4c07 (diff)
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Fix interrupt-noterm.exp on targets always in non-stop
With "maint set target-non-stop on" we get: @@ -66,13 +66,16 @@ Continuing. interrupt (gdb) PASS: gdb.base/interrupt-noterm.exp: interrupt -Program received signal SIGINT, Interrupt. -PASS: gdb.base/interrupt-noterm.exp: inferior received SIGINT -testcase src/gdb/testsuite/gdb.base/interrupt-noterm.exp completed in 0 seconds +[process 12119] #1 stopped. +0x0000003615ebc6d0 in __nanosleep_nocancel () at ../sysdeps/unix/syscall-template.S:81 +81 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS) +FAIL: gdb.base/interrupt-noterm.exp: inferior received SIGINT (timeout) +testcase src/gdb/testsuite/gdb.base/interrupt-noterm.exp completed in 10 seconds That is, we get "[$thread] #1 stopped" instead of SIGINT. The issue is that we don't currently distinguish send "interrupt/ctrl-c" to target terminal vs "stop/pause" thread well; both cases go through "target_stop". And then, the native Linux backend (linux-nat.c) implements target_stop with SIGSTOP in non-stop mode, and SIGINT in all-stop mode. Since "maint set target-non-stop on" forces the backend to be always running in non-stop mode, even though the user-visible behavior is "set non-stop" is "off", "interrupt" causes a SIGSTOP instead of the SIGINT the test expects. Fix this by introducing a target_interrupt method to use in the "interrupt/ctrl-c" case, so "set non-stop off" can always work the same irrespective of "maint set target-non-stop on/off". I'm explictly considering changing the "set non-stop on" behavior as out of scope here. Most of the patch is an across-the-board rename of to_stop hook implementations to to_interrupt. The only targets where something more than a rename is being done are linux-nat.c and remote.c, which are the only targets that support async, and thus are the only ones the core side calls target_stop on. gdb/ChangeLog: 2015-08-07 Pedro Alves <palves@redhat.com> * darwin-nat.c (darwin_stop): Rename to ... (darwin_interrupt): ... this. (_initialize_darwin_inferior): Adjust. * gnu-nat.c (gnu_stop): Delete. (gnu_target): Don't install gnu_stop. * inf-ptrace.c (inf_ptrace_stop): Rename to ... (inf_ptrace_interrupt): ... this. (inf_ptrace_target): Adjust. * infcmd.c (interrupt_target_1): Use target_interrupt instead of target_stop. * linux-nat (linux_nat_stop): Rename to ... (linux_nat_interrupt): ... this. (linux_nat_stop): Reimplement. (linux_nat_add_target): Install linux_nat_interrupt. * nto-procfs.c (nto_interrupt_twice): Rename to ... (nto_handle_sigint_twice): ... this. (nto_interrupt): Rename to ... (nto_handle_sigint): ... this. Call target_interrupt instead of target_stop. (procfs_wait): Adjust. (procfs_stop): Rename to ... (procfs_interrupt): ... this. (init_procfs_targets): Adjust. * procfs.c (procfs_stop): Rename to ... (procfs_interrupt): ... this. (procfs_target): Adjust. * remote-m32r-sdi.c (m32r_stop): Rename to ... (m32r_interrupt): ... this. (init_m32r_ops): Adjust. * remote-sim.c (gdbsim_stop_inferior): Rename to ... (gdbsim_interrupt_inferior): ... this. (gdbsim_stop): Rename to ... (gdbsim_interrupt): ... this. (gdbsim_cntrl_c): Adjust. (init_gdbsim_ops): Adjust. * remote.c (sync_remote_interrupt): Adjust comments. (remote_stop_as): Rename to ... (remote_interrupt_as): ... this. (remote_stop): Adjust comment. (remote_interrupt): New function. (init_remote_ops): Install remote_interrupt. * target.c (target_interrupt): New function. * target.h (struct target_ops) <to_interrupt>: New field. (target_interrupt): New declaration. * windows-nat.c (windows_stop): Rename to ... (windows_interrupt): ... this. * target-delegates.c: Regenerate.
Diffstat (limited to 'gdb/target-delegates.c')
-rw-r--r--gdb/target-delegates.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/gdb/target-delegates.c b/gdb/target-delegates.c
index 64b86c2..892cf9d 100644
--- a/gdb/target-delegates.c
+++ b/gdb/target-delegates.c
@@ -1537,6 +1537,30 @@ debug_stop (struct target_ops *self, ptid_t arg1)
}
static void
+delegate_interrupt (struct target_ops *self, ptid_t arg1)
+{
+ self = self->beneath;
+ self->to_interrupt (self, arg1);
+}
+
+static void
+tdefault_interrupt (struct target_ops *self, ptid_t arg1)
+{
+}
+
+static void
+debug_interrupt (struct target_ops *self, ptid_t arg1)
+{
+ fprintf_unfiltered (gdb_stdlog, "-> %s->to_interrupt (...)\n", debug_target.to_shortname);
+ debug_target.to_interrupt (&debug_target, arg1);
+ fprintf_unfiltered (gdb_stdlog, "<- %s->to_interrupt (", debug_target.to_shortname);
+ target_debug_print_struct_target_ops_p (&debug_target);
+ fputs_unfiltered (", ", gdb_stdlog);
+ target_debug_print_ptid_t (arg1);
+ fputs_unfiltered (")\n", gdb_stdlog);
+}
+
+static void
delegate_rcmd (struct target_ops *self, const char *arg1, struct ui_file *arg2)
{
self = self->beneath;
@@ -4016,6 +4040,8 @@ install_delegators (struct target_ops *ops)
ops->to_thread_name = delegate_thread_name;
if (ops->to_stop == NULL)
ops->to_stop = delegate_stop;
+ if (ops->to_interrupt == NULL)
+ ops->to_interrupt = delegate_interrupt;
if (ops->to_rcmd == NULL)
ops->to_rcmd = delegate_rcmd;
if (ops->to_pid_to_exec_file == NULL)
@@ -4253,6 +4279,7 @@ install_dummy_methods (struct target_ops *ops)
ops->to_extra_thread_info = tdefault_extra_thread_info;
ops->to_thread_name = tdefault_thread_name;
ops->to_stop = tdefault_stop;
+ ops->to_interrupt = tdefault_interrupt;
ops->to_rcmd = default_rcmd;
ops->to_pid_to_exec_file = tdefault_pid_to_exec_file;
ops->to_log_command = tdefault_log_command;
@@ -4402,6 +4429,7 @@ init_debug_target (struct target_ops *ops)
ops->to_extra_thread_info = debug_extra_thread_info;
ops->to_thread_name = debug_thread_name;
ops->to_stop = debug_stop;
+ ops->to_interrupt = debug_interrupt;
ops->to_rcmd = debug_rcmd;
ops->to_pid_to_exec_file = debug_pid_to_exec_file;
ops->to_log_command = debug_log_command;