[30/31] Centralize "[Thread ...exited]" notifications
Commit Message
Currently, each target backend is responsible for printing "[Thread
...exited]" before deleting a thread. This leads to unnecessary
differences between targets, like e.g. with the remote target, we
never print such messages, even though we do print "[New Thread ...]".
E.g., debugging the gdb.threads/attach-many-short-lived-threads.exp
with gdbserver, letting it run for a bit, and then pressing Ctrl-C, we
currently see:
(gdb) c
Continuing.
^C[New Thread 3850398.3887449]
[New Thread 3850398.3887500]
[New Thread 3850398.3887551]
[New Thread 3850398.3887602]
[New Thread 3850398.3887653]
...
Thread 1 "attach-many-sho" received signal SIGINT, Interrupt.
0x00007ffff7e6a23f in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7fffffffda80, rem=rem@entry=0x7fffffffda80)
at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
78 in ../sysdeps/unix/sysv/linux/clock_nanosleep.c
(gdb)
Above, we only see "New Thread" notifications, even though threads
were deleted.
After this patch, we'll see:
(gdb) c
Continuing.
^C[Thread 3558643.3577053 exited]
[Thread 3558643.3577104 exited]
[Thread 3558643.3577155 exited]
[Thread 3558643.3579603 exited]
...
[New Thread 3558643.3597415]
[New Thread 3558643.3600015]
[New Thread 3558643.3599965]
...
Thread 1 "attach-many-sho" received signal SIGINT, Interrupt.
0x00007ffff7e6a23f in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7fffffffda80, rem=rem@entry=0x7fffffffda80)
at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
78 in ../sysdeps/unix/sysv/linux/clock_nanosleep.c
(gdb) q
This commit fixes this by moving the thread exit printing to common
code instead, triggered from within delete_thread (or rather,
set_thread_exited).
There's one wrinkle, though. While most targest want to print:
[Thread ... exited]
the Windows target wants to print:
[Thread ... exited with code <exit_code>]
... and sometimes wants to suppress the notification for the main
thread. To address that, this commits adds a delete_thread_with_code
function, only used by that target (so far).
Change-Id: I06ec07b7c51527872a9713dd11cf7867b50fc5ff
---
gdb/annotate.c | 4 +++-
gdb/breakpoint.c | 4 +++-
gdb/fbsd-nat.c | 3 ---
gdb/gdbthread.h | 22 +++++++++++++----
gdb/inferior.c | 2 +-
gdb/inferior.h | 2 ++
gdb/linux-nat.c | 11 +++------
gdb/mi/mi-interp.c | 8 +++++--
gdb/netbsd-nat.c | 4 ----
gdb/observable.h | 11 +++++----
gdb/procfs.c | 6 -----
gdb/python/py-inferior.c | 4 +++-
gdb/thread.c | 51 ++++++++++++++++++++++++++++++----------
gdb/windows-nat.c | 16 ++++---------
14 files changed, 89 insertions(+), 59 deletions(-)
Comments
Pedro Alves <pedro@palves.net> writes:
> Currently, each target backend is responsible for printing "[Thread
> ...exited]" before deleting a thread. This leads to unnecessary
> differences between targets, like e.g. with the remote target, we
> never print such messages, even though we do print "[New Thread ...]".
>
> E.g., debugging the gdb.threads/attach-many-short-lived-threads.exp
> with gdbserver, letting it run for a bit, and then pressing Ctrl-C, we
> currently see:
>
> (gdb) c
> Continuing.
> ^C[New Thread 3850398.3887449]
> [New Thread 3850398.3887500]
> [New Thread 3850398.3887551]
> [New Thread 3850398.3887602]
> [New Thread 3850398.3887653]
> ...
>
> Thread 1 "attach-many-sho" received signal SIGINT, Interrupt.
> 0x00007ffff7e6a23f in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7fffffffda80, rem=rem@entry=0x7fffffffda80)
> at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
> 78 in ../sysdeps/unix/sysv/linux/clock_nanosleep.c
> (gdb)
>
> Above, we only see "New Thread" notifications, even though threads
> were deleted.
>
> After this patch, we'll see:
>
> (gdb) c
> Continuing.
> ^C[Thread 3558643.3577053 exited]
> [Thread 3558643.3577104 exited]
> [Thread 3558643.3577155 exited]
> [Thread 3558643.3579603 exited]
> ...
> [New Thread 3558643.3597415]
> [New Thread 3558643.3600015]
> [New Thread 3558643.3599965]
> ...
>
> Thread 1 "attach-many-sho" received signal SIGINT, Interrupt.
> 0x00007ffff7e6a23f in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7fffffffda80, rem=rem@entry=0x7fffffffda80)
> at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
> 78 in ../sysdeps/unix/sysv/linux/clock_nanosleep.c
> (gdb) q
>
>
> This commit fixes this by moving the thread exit printing to common
> code instead, triggered from within delete_thread (or rather,
> set_thread_exited).
>
> There's one wrinkle, though. While most targest want to print:
>
> [Thread ... exited]
>
> the Windows target wants to print:
>
> [Thread ... exited with code <exit_code>]
>
> ... and sometimes wants to suppress the notification for the main
> thread. To address that, this commits adds a delete_thread_with_code
> function, only used by that target (so far).
You mention gdb.threads/attach-many-short-lived-threads.exp as an
example, but I don't think that test actually fails due to this issue,
right?
It might be worth mentioning gdb.threads/thread-specific-bp.exp, that is
a test script that should actually start passing after this commit.
Thanks,
Andrew
>
> Change-Id: I06ec07b7c51527872a9713dd11cf7867b50fc5ff
> ---
> gdb/annotate.c | 4 +++-
> gdb/breakpoint.c | 4 +++-
> gdb/fbsd-nat.c | 3 ---
> gdb/gdbthread.h | 22 +++++++++++++----
> gdb/inferior.c | 2 +-
> gdb/inferior.h | 2 ++
> gdb/linux-nat.c | 11 +++------
> gdb/mi/mi-interp.c | 8 +++++--
> gdb/netbsd-nat.c | 4 ----
> gdb/observable.h | 11 +++++----
> gdb/procfs.c | 6 -----
> gdb/python/py-inferior.c | 4 +++-
> gdb/thread.c | 51 ++++++++++++++++++++++++++++++----------
> gdb/windows-nat.c | 16 ++++---------
> 14 files changed, 89 insertions(+), 59 deletions(-)
>
> diff --git a/gdb/annotate.c b/gdb/annotate.c
> index 33805dcdb30..b45384ddb15 100644
> --- a/gdb/annotate.c
> +++ b/gdb/annotate.c
> @@ -233,7 +233,9 @@ annotate_thread_changed (void)
> /* Emit notification on thread exit. */
>
> static void
> -annotate_thread_exited (struct thread_info *t, int silent)
> +annotate_thread_exited (thread_info *t,
> + gdb::optional<ULONGEST> exit_code,
> + bool /* silent */)
> {
> if (annotation_level > 1)
> {
> diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
> index f0276a963c0..0736231e470 100644
> --- a/gdb/breakpoint.c
> +++ b/gdb/breakpoint.c
> @@ -3237,7 +3237,9 @@ remove_breakpoints (void)
> that thread. */
>
> static void
> -remove_threaded_breakpoints (struct thread_info *tp, int silent)
> +remove_threaded_breakpoints (thread_info *tp,
> + gdb::optional<ULONGEST> exit_code,
> + bool /* silent */)
> {
> for (breakpoint *b : all_breakpoints_safe ())
> {
> diff --git a/gdb/fbsd-nat.c b/gdb/fbsd-nat.c
> index 1aec75050ae..3d1e742f4e3 100644
> --- a/gdb/fbsd-nat.c
> +++ b/gdb/fbsd-nat.c
> @@ -1300,9 +1300,6 @@ fbsd_nat_target::wait_1 (ptid_t ptid, struct target_waitstatus *ourstatus,
> {
> fbsd_lwp_debug_printf ("deleting thread for LWP %u",
> pl.pl_lwpid);
> - if (print_thread_events)
> - gdb_printf (_("[%s exited]\n"),
> - target_pid_to_str (wptid).c_str ());
> low_delete_thread (thr);
> delete_thread (thr);
> }
> diff --git a/gdb/gdbthread.h b/gdb/gdbthread.h
> index 43e9d6ea484..7ab02873f17 100644
> --- a/gdb/gdbthread.h
> +++ b/gdb/gdbthread.h
> @@ -636,16 +636,30 @@ extern struct thread_info *add_thread_with_info (process_stratum_target *targ,
>
> /* Delete thread THREAD and notify of thread exit. If the thread is
> currently not deletable, don't actually delete it but still tag it
> - as exited and do the notification. */
> -extern void delete_thread (struct thread_info *thread);
> + as exited and do the notification. EXIT_CODE is the thread's exit
> + code. If SILENT, don't actually notify the CLI. THREAD must not
> + be NULL or an assertion will fail. */
> +extern void delete_thread_with_exit_code (thread_info *thread,
> + ULONGEST exit_code,
> + bool silent = false);
> +
> +/* Delete thread THREAD and notify of thread exit. If the thread is
> + currently not deletable, don't actually delete it but still tag it
> + as exited and do the notification. THREAD must not be NULL or an
> + assertion will fail. */
> +extern void delete_thread (thread_info *thread);
>
> /* Like delete_thread, but be quiet about it. Used when the process
> this thread belonged to has already exited, for example. */
> extern void delete_thread_silent (struct thread_info *thread);
>
> /* Mark the thread exited, but don't delete it or remove it from the
> - inferior thread list. */
> -extern void set_thread_exited (thread_info *tp, bool silent);
> + inferior thread list. EXIT_CODE is the thread's exit code, if
> + available. If SILENT, then don't inform the CLI about the
> + exit. */
> +extern void set_thread_exited (thread_info *tp,
> + gdb::optional<ULONGEST> exit_code = {},
> + bool silent = false);
>
> /* Delete a step_resume_breakpoint from the thread database. */
> extern void delete_step_resume_breakpoint (struct thread_info *);
> diff --git a/gdb/inferior.c b/gdb/inferior.c
> index eacb65ec1d7..834eabdf2ca 100644
> --- a/gdb/inferior.c
> +++ b/gdb/inferior.c
> @@ -174,7 +174,7 @@ inferior::clear_thread_list ()
> {
> threads_debug_printf ("deleting thread %s",
> thr->ptid.to_string ().c_str ());
> - set_thread_exited (thr, true);
> + set_thread_exited (thr, {}, true);
> if (thr->deletable ())
> delete thr;
> });
> diff --git a/gdb/inferior.h b/gdb/inferior.h
> index 07d9527a802..cf3f1275cc1 100644
> --- a/gdb/inferior.h
> +++ b/gdb/inferior.h
> @@ -628,6 +628,8 @@ extern void detach_inferior (inferior *inf);
>
> extern void exit_inferior (inferior *inf);
>
> +/* Like exit_inferior, but be quiet -- don't announce the exit of the
> + inferior's threads to the CLI. */
> extern void exit_inferior_silent (inferior *inf);
>
> extern void exit_inferior_num_silent (int num);
> diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
> index 75f81edf20a..acf5fd3f1b1 100644
> --- a/gdb/linux-nat.c
> +++ b/gdb/linux-nat.c
> @@ -916,15 +916,10 @@ linux_nat_switch_fork (ptid_t new_ptid)
> static void
> exit_lwp (struct lwp_info *lp, bool del_thread = true)
> {
> - struct thread_info *th = find_thread_ptid (linux_target, lp->ptid);
> -
> - if (th)
> + if (del_thread)
> {
> - if (print_thread_events)
> - gdb_printf (_("[%s exited]\n"),
> - target_pid_to_str (lp->ptid).c_str ());
> -
> - if (del_thread)
> + thread_info *th = find_thread_ptid (linux_target, lp->ptid);
> + if (th != nullptr)
> delete_thread (th);
> }
>
> diff --git a/gdb/mi/mi-interp.c b/gdb/mi/mi-interp.c
> index 3cc2462f672..189dd1f302f 100644
> --- a/gdb/mi/mi-interp.c
> +++ b/gdb/mi/mi-interp.c
> @@ -68,7 +68,9 @@ static void mi_on_normal_stop (struct bpstat *bs, int print_frame);
> static void mi_on_no_history (void);
>
> static void mi_new_thread (struct thread_info *t);
> -static void mi_thread_exit (struct thread_info *t, int silent);
> +static void mi_thread_exit (thread_info *t,
> + gdb::optional<ULONGEST> exit_code,
> + bool silent);
> static void mi_record_changed (struct inferior*, int, const char *,
> const char *);
> static void mi_inferior_added (struct inferior *inf);
> @@ -351,8 +353,10 @@ mi_new_thread (struct thread_info *t)
> }
> }
>
> +/* Observer for the thread_exit notification. */
> +
> static void
> -mi_thread_exit (struct thread_info *t, int silent)
> +mi_thread_exit (thread_info *t, gdb::optional<ULONGEST> exit_code, bool silent)
> {
> SWITCH_THRU_ALL_UIS ()
> {
> diff --git a/gdb/netbsd-nat.c b/gdb/netbsd-nat.c
> index aa16a6cc5bd..9674baeb846 100644
> --- a/gdb/netbsd-nat.c
> +++ b/gdb/netbsd-nat.c
> @@ -625,10 +625,6 @@ nbsd_nat_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
> {
> /* NetBSD does not store an LWP exit status. */
> ourstatus->set_thread_exited (0);
> -
> - if (print_thread_events)
> - gdb_printf (_("[%s exited]\n"),
> - target_pid_to_str (wptid).c_str ());
> }
>
> /* The GDB core expects that the rest of the threads are running. */
> diff --git a/gdb/observable.h b/gdb/observable.h
> index 1103c5c98a6..a4ab4f1e38f 100644
> --- a/gdb/observable.h
> +++ b/gdb/observable.h
> @@ -126,10 +126,13 @@ extern observable<struct objfile */* objfile */> free_objfile;
> /* The thread specified by T has been created. */
> extern observable<struct thread_info */* t */> new_thread;
>
> -/* The thread specified by T has exited. The SILENT argument
> - indicates that gdb is removing the thread from its tables without
> - wanting to notify the user about it. */
> -extern observable<struct thread_info */* t */, int /* silent */> thread_exit;
> +/* The thread specified by T has exited. EXIT_CODE is the thread's
> + exit code, if available. The SILENT argument indicates that GDB is
> + removing the thread from its tables without wanting to notify the
> + CLI about it. */
> +extern observable<thread_info */* t */,
> + gdb::optional<ULONGEST> /* exit_code */,
> + bool /* silent */> thread_exit;
>
> /* An explicit stop request was issued to PTID. If PTID equals
> minus_one_ptid, the request applied to all threads. If
> diff --git a/gdb/procfs.c b/gdb/procfs.c
> index ffc26c8fb9e..7d0e6e9a4c9 100644
> --- a/gdb/procfs.c
> +++ b/gdb/procfs.c
> @@ -2115,9 +2115,6 @@ procfs_target::wait (ptid_t ptid, struct target_waitstatus *status,
> case PR_SYSENTRY:
> if (what == SYS_lwp_exit)
> {
> - if (print_thread_events)
> - gdb_printf (_("[%s exited]\n"),
> - target_pid_to_str (retval).c_str ());
> delete_thread (find_thread_ptid (this, retval));
> target_continue_no_signal (ptid);
> goto wait_again;
> @@ -2222,9 +2219,6 @@ procfs_target::wait (ptid_t ptid, struct target_waitstatus *status,
> }
> else if (what == SYS_lwp_exit)
> {
> - if (print_thread_events)
> - gdb_printf (_("[%s exited]\n"),
> - target_pid_to_str (retval).c_str ());
> delete_thread (find_thread_ptid (this, retval));
> status->set_spurious ();
> return retval;
> diff --git a/gdb/python/py-inferior.c b/gdb/python/py-inferior.c
> index 4d5e09db680..be5597c4a2e 100644
> --- a/gdb/python/py-inferior.c
> +++ b/gdb/python/py-inferior.c
> @@ -360,7 +360,9 @@ add_thread_object (struct thread_info *tp)
> }
>
> static void
> -delete_thread_object (struct thread_info *tp, int ignore)
> +delete_thread_object (thread_info *tp,
> + gdb::optional<ULONGEST> /* exit_code */,
> + bool /* silent */)
> {
> if (!gdb_python_initialized)
> return;
> diff --git a/gdb/thread.c b/gdb/thread.c
> index 2ca3a867d8c..7ab30562fd3 100644
> --- a/gdb/thread.c
> +++ b/gdb/thread.c
> @@ -192,7 +192,8 @@ clear_thread_inferior_resources (struct thread_info *tp)
> /* See gdbthread.h. */
>
> void
> -set_thread_exited (thread_info *tp, bool silent)
> +set_thread_exited (thread_info *tp, gdb::optional<ULONGEST> exit_code,
> + bool silent)
> {
> /* Dead threads don't need to step-over. Remove from chain. */
> if (thread_is_in_step_over_chain (tp))
> @@ -211,7 +212,22 @@ set_thread_exited (thread_info *tp, bool silent)
> if (proc_target != nullptr)
> proc_target->maybe_remove_resumed_with_pending_wait_status (tp);
>
> - gdb::observers::thread_exit.notify (tp, silent);
> + if (!silent && print_thread_events)
> + {
> + if (exit_code.has_value ())
> + {
> + gdb_printf (_("[%s exited with code %s]\n"),
> + target_pid_to_str (tp->ptid).c_str (),
> + pulongest (*exit_code));
> + }
> + else
> + {
> + gdb_printf (_("[%s exited]\n"),
> + target_pid_to_str (tp->ptid).c_str ());
> + }
> + }
> +
> + gdb::observers::thread_exit.notify (tp, exit_code, silent);
>
> /* Tag it as exited. */
> tp->state = THREAD_EXITED;
> @@ -468,20 +484,22 @@ global_thread_step_over_chain_remove (struct thread_info *tp)
> global_thread_step_over_list.erase (it);
> }
>
> -/* Delete the thread referenced by THR. If SILENT, don't notify
> - the observer of this exit.
> -
> - THR must not be NULL or a failed assertion will be raised. */
> +/* Helper for the different delete_thread variants. */
>
> static void
> -delete_thread_1 (thread_info *thr, bool silent)
> +delete_thread_1 (thread_info *thr, gdb::optional<ULONGEST> exit_code,
> + bool silent)
> {
> gdb_assert (thr != nullptr);
>
> - threads_debug_printf ("deleting thread %s, silent = %d",
> - thr->ptid.to_string ().c_str (), silent);
> + threads_debug_printf ("deleting thread %s, exit_code = %s, silent = %d",
> + thr->ptid.to_string ().c_str (),
> + (exit_code.has_value ()
> + ? pulongest (*exit_code)
> + : "<none>"),
> + silent);
>
> - set_thread_exited (thr, silent);
> + set_thread_exited (thr, exit_code, silent);
>
> if (!thr->deletable ())
> {
> @@ -497,16 +515,25 @@ delete_thread_1 (thread_info *thr, bool silent)
>
> /* See gdbthread.h. */
>
> +void
> +delete_thread_with_exit_code (thread_info *thread, ULONGEST exit_code,
> + bool silent)
> +{
> + delete_thread_1 (thread, exit_code, false /* not silent */);
> +}
> +
> +/* See gdbthread.h. */
> +
> void
> delete_thread (thread_info *thread)
> {
> - delete_thread_1 (thread, false /* not silent */);
> + delete_thread_1 (thread, {}, false /* not silent */);
> }
>
> void
> delete_thread_silent (thread_info *thread)
> {
> - delete_thread_1 (thread, true /* silent */);
> + delete_thread_1 (thread, {}, true /* not silent */);
> }
>
> struct thread_info *
> diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
> index ee4e78bdabf..2764fc694b3 100644
> --- a/gdb/windows-nat.c
> +++ b/gdb/windows-nat.c
> @@ -611,21 +611,13 @@ windows_nat_target::delete_thread (ptid_t ptid, DWORD exit_code,
>
> id = ptid.lwp ();
>
> - /* Emit a notification about the thread being deleted.
> -
> - Note that no notification was printed when the main thread
> + /* Note that no notification was printed when the main thread
> was created, and thus, unless in verbose mode, we should be
> symmetrical, and avoid that notification for the main thread
> here as well. */
> -
> - if (info_verbose)
> - gdb_printf ("[Deleting %s]\n", target_pid_to_str (ptid).c_str ());
> - else if (print_thread_events && !main_thread_p)
> - gdb_printf (_("[%s exited with code %u]\n"),
> - target_pid_to_str (ptid).c_str (),
> - (unsigned) exit_code);
> -
> - ::delete_thread (find_thread_ptid (this, ptid));
> + bool silent = (main_thread_p && !info_verbose);
> + thread_info *todel = find_thread_ptid (this, ptid);
> + delete_thread_with_exit_code (todel, exit_code, silent);
>
> auto iter = std::find_if (windows_process.thread_list.begin (),
> windows_process.thread_list.end (),
> --
> 2.36.0
Pedro Alves <pedro@palves.net> writes:
> Currently, each target backend is responsible for printing "[Thread
> ...exited]" before deleting a thread. This leads to unnecessary
> differences between targets, like e.g. with the remote target, we
> never print such messages, even though we do print "[New Thread ...]".
>
> E.g., debugging the gdb.threads/attach-many-short-lived-threads.exp
> with gdbserver, letting it run for a bit, and then pressing Ctrl-C, we
> currently see:
I'm currently writing some tests that run into this issue, and I needed
a bug-id to use in the XFAIL messages. I've created PR gdb/30129 for
this issue:
https://sourceware.org/bugzilla/show_bug.cgi?id=30129
Thanks,
Andrew
>
> (gdb) c
> Continuing.
> ^C[New Thread 3850398.3887449]
> [New Thread 3850398.3887500]
> [New Thread 3850398.3887551]
> [New Thread 3850398.3887602]
> [New Thread 3850398.3887653]
> ...
>
> Thread 1 "attach-many-sho" received signal SIGINT, Interrupt.
> 0x00007ffff7e6a23f in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7fffffffda80, rem=rem@entry=0x7fffffffda80)
> at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
> 78 in ../sysdeps/unix/sysv/linux/clock_nanosleep.c
> (gdb)
>
> Above, we only see "New Thread" notifications, even though threads
> were deleted.
>
> After this patch, we'll see:
>
> (gdb) c
> Continuing.
> ^C[Thread 3558643.3577053 exited]
> [Thread 3558643.3577104 exited]
> [Thread 3558643.3577155 exited]
> [Thread 3558643.3579603 exited]
> ...
> [New Thread 3558643.3597415]
> [New Thread 3558643.3600015]
> [New Thread 3558643.3599965]
> ...
>
> Thread 1 "attach-many-sho" received signal SIGINT, Interrupt.
> 0x00007ffff7e6a23f in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7fffffffda80, rem=rem@entry=0x7fffffffda80)
> at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
> 78 in ../sysdeps/unix/sysv/linux/clock_nanosleep.c
> (gdb) q
>
>
> This commit fixes this by moving the thread exit printing to common
> code instead, triggered from within delete_thread (or rather,
> set_thread_exited).
>
> There's one wrinkle, though. While most targest want to print:
>
> [Thread ... exited]
>
> the Windows target wants to print:
>
> [Thread ... exited with code <exit_code>]
>
> ... and sometimes wants to suppress the notification for the main
> thread. To address that, this commits adds a delete_thread_with_code
> function, only used by that target (so far).
>
> Change-Id: I06ec07b7c51527872a9713dd11cf7867b50fc5ff
> ---
> gdb/annotate.c | 4 +++-
> gdb/breakpoint.c | 4 +++-
> gdb/fbsd-nat.c | 3 ---
> gdb/gdbthread.h | 22 +++++++++++++----
> gdb/inferior.c | 2 +-
> gdb/inferior.h | 2 ++
> gdb/linux-nat.c | 11 +++------
> gdb/mi/mi-interp.c | 8 +++++--
> gdb/netbsd-nat.c | 4 ----
> gdb/observable.h | 11 +++++----
> gdb/procfs.c | 6 -----
> gdb/python/py-inferior.c | 4 +++-
> gdb/thread.c | 51 ++++++++++++++++++++++++++++++----------
> gdb/windows-nat.c | 16 ++++---------
> 14 files changed, 89 insertions(+), 59 deletions(-)
>
> diff --git a/gdb/annotate.c b/gdb/annotate.c
> index 33805dcdb30..b45384ddb15 100644
> --- a/gdb/annotate.c
> +++ b/gdb/annotate.c
> @@ -233,7 +233,9 @@ annotate_thread_changed (void)
> /* Emit notification on thread exit. */
>
> static void
> -annotate_thread_exited (struct thread_info *t, int silent)
> +annotate_thread_exited (thread_info *t,
> + gdb::optional<ULONGEST> exit_code,
> + bool /* silent */)
> {
> if (annotation_level > 1)
> {
> diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
> index f0276a963c0..0736231e470 100644
> --- a/gdb/breakpoint.c
> +++ b/gdb/breakpoint.c
> @@ -3237,7 +3237,9 @@ remove_breakpoints (void)
> that thread. */
>
> static void
> -remove_threaded_breakpoints (struct thread_info *tp, int silent)
> +remove_threaded_breakpoints (thread_info *tp,
> + gdb::optional<ULONGEST> exit_code,
> + bool /* silent */)
> {
> for (breakpoint *b : all_breakpoints_safe ())
> {
> diff --git a/gdb/fbsd-nat.c b/gdb/fbsd-nat.c
> index 1aec75050ae..3d1e742f4e3 100644
> --- a/gdb/fbsd-nat.c
> +++ b/gdb/fbsd-nat.c
> @@ -1300,9 +1300,6 @@ fbsd_nat_target::wait_1 (ptid_t ptid, struct target_waitstatus *ourstatus,
> {
> fbsd_lwp_debug_printf ("deleting thread for LWP %u",
> pl.pl_lwpid);
> - if (print_thread_events)
> - gdb_printf (_("[%s exited]\n"),
> - target_pid_to_str (wptid).c_str ());
> low_delete_thread (thr);
> delete_thread (thr);
> }
> diff --git a/gdb/gdbthread.h b/gdb/gdbthread.h
> index 43e9d6ea484..7ab02873f17 100644
> --- a/gdb/gdbthread.h
> +++ b/gdb/gdbthread.h
> @@ -636,16 +636,30 @@ extern struct thread_info *add_thread_with_info (process_stratum_target *targ,
>
> /* Delete thread THREAD and notify of thread exit. If the thread is
> currently not deletable, don't actually delete it but still tag it
> - as exited and do the notification. */
> -extern void delete_thread (struct thread_info *thread);
> + as exited and do the notification. EXIT_CODE is the thread's exit
> + code. If SILENT, don't actually notify the CLI. THREAD must not
> + be NULL or an assertion will fail. */
> +extern void delete_thread_with_exit_code (thread_info *thread,
> + ULONGEST exit_code,
> + bool silent = false);
> +
> +/* Delete thread THREAD and notify of thread exit. If the thread is
> + currently not deletable, don't actually delete it but still tag it
> + as exited and do the notification. THREAD must not be NULL or an
> + assertion will fail. */
> +extern void delete_thread (thread_info *thread);
>
> /* Like delete_thread, but be quiet about it. Used when the process
> this thread belonged to has already exited, for example. */
> extern void delete_thread_silent (struct thread_info *thread);
>
> /* Mark the thread exited, but don't delete it or remove it from the
> - inferior thread list. */
> -extern void set_thread_exited (thread_info *tp, bool silent);
> + inferior thread list. EXIT_CODE is the thread's exit code, if
> + available. If SILENT, then don't inform the CLI about the
> + exit. */
> +extern void set_thread_exited (thread_info *tp,
> + gdb::optional<ULONGEST> exit_code = {},
> + bool silent = false);
>
> /* Delete a step_resume_breakpoint from the thread database. */
> extern void delete_step_resume_breakpoint (struct thread_info *);
> diff --git a/gdb/inferior.c b/gdb/inferior.c
> index eacb65ec1d7..834eabdf2ca 100644
> --- a/gdb/inferior.c
> +++ b/gdb/inferior.c
> @@ -174,7 +174,7 @@ inferior::clear_thread_list ()
> {
> threads_debug_printf ("deleting thread %s",
> thr->ptid.to_string ().c_str ());
> - set_thread_exited (thr, true);
> + set_thread_exited (thr, {}, true);
> if (thr->deletable ())
> delete thr;
> });
> diff --git a/gdb/inferior.h b/gdb/inferior.h
> index 07d9527a802..cf3f1275cc1 100644
> --- a/gdb/inferior.h
> +++ b/gdb/inferior.h
> @@ -628,6 +628,8 @@ extern void detach_inferior (inferior *inf);
>
> extern void exit_inferior (inferior *inf);
>
> +/* Like exit_inferior, but be quiet -- don't announce the exit of the
> + inferior's threads to the CLI. */
> extern void exit_inferior_silent (inferior *inf);
>
> extern void exit_inferior_num_silent (int num);
> diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
> index 75f81edf20a..acf5fd3f1b1 100644
> --- a/gdb/linux-nat.c
> +++ b/gdb/linux-nat.c
> @@ -916,15 +916,10 @@ linux_nat_switch_fork (ptid_t new_ptid)
> static void
> exit_lwp (struct lwp_info *lp, bool del_thread = true)
> {
> - struct thread_info *th = find_thread_ptid (linux_target, lp->ptid);
> -
> - if (th)
> + if (del_thread)
> {
> - if (print_thread_events)
> - gdb_printf (_("[%s exited]\n"),
> - target_pid_to_str (lp->ptid).c_str ());
> -
> - if (del_thread)
> + thread_info *th = find_thread_ptid (linux_target, lp->ptid);
> + if (th != nullptr)
> delete_thread (th);
> }
>
> diff --git a/gdb/mi/mi-interp.c b/gdb/mi/mi-interp.c
> index 3cc2462f672..189dd1f302f 100644
> --- a/gdb/mi/mi-interp.c
> +++ b/gdb/mi/mi-interp.c
> @@ -68,7 +68,9 @@ static void mi_on_normal_stop (struct bpstat *bs, int print_frame);
> static void mi_on_no_history (void);
>
> static void mi_new_thread (struct thread_info *t);
> -static void mi_thread_exit (struct thread_info *t, int silent);
> +static void mi_thread_exit (thread_info *t,
> + gdb::optional<ULONGEST> exit_code,
> + bool silent);
> static void mi_record_changed (struct inferior*, int, const char *,
> const char *);
> static void mi_inferior_added (struct inferior *inf);
> @@ -351,8 +353,10 @@ mi_new_thread (struct thread_info *t)
> }
> }
>
> +/* Observer for the thread_exit notification. */
> +
> static void
> -mi_thread_exit (struct thread_info *t, int silent)
> +mi_thread_exit (thread_info *t, gdb::optional<ULONGEST> exit_code, bool silent)
> {
> SWITCH_THRU_ALL_UIS ()
> {
> diff --git a/gdb/netbsd-nat.c b/gdb/netbsd-nat.c
> index aa16a6cc5bd..9674baeb846 100644
> --- a/gdb/netbsd-nat.c
> +++ b/gdb/netbsd-nat.c
> @@ -625,10 +625,6 @@ nbsd_nat_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
> {
> /* NetBSD does not store an LWP exit status. */
> ourstatus->set_thread_exited (0);
> -
> - if (print_thread_events)
> - gdb_printf (_("[%s exited]\n"),
> - target_pid_to_str (wptid).c_str ());
> }
>
> /* The GDB core expects that the rest of the threads are running. */
> diff --git a/gdb/observable.h b/gdb/observable.h
> index 1103c5c98a6..a4ab4f1e38f 100644
> --- a/gdb/observable.h
> +++ b/gdb/observable.h
> @@ -126,10 +126,13 @@ extern observable<struct objfile */* objfile */> free_objfile;
> /* The thread specified by T has been created. */
> extern observable<struct thread_info */* t */> new_thread;
>
> -/* The thread specified by T has exited. The SILENT argument
> - indicates that gdb is removing the thread from its tables without
> - wanting to notify the user about it. */
> -extern observable<struct thread_info */* t */, int /* silent */> thread_exit;
> +/* The thread specified by T has exited. EXIT_CODE is the thread's
> + exit code, if available. The SILENT argument indicates that GDB is
> + removing the thread from its tables without wanting to notify the
> + CLI about it. */
> +extern observable<thread_info */* t */,
> + gdb::optional<ULONGEST> /* exit_code */,
> + bool /* silent */> thread_exit;
>
> /* An explicit stop request was issued to PTID. If PTID equals
> minus_one_ptid, the request applied to all threads. If
> diff --git a/gdb/procfs.c b/gdb/procfs.c
> index ffc26c8fb9e..7d0e6e9a4c9 100644
> --- a/gdb/procfs.c
> +++ b/gdb/procfs.c
> @@ -2115,9 +2115,6 @@ procfs_target::wait (ptid_t ptid, struct target_waitstatus *status,
> case PR_SYSENTRY:
> if (what == SYS_lwp_exit)
> {
> - if (print_thread_events)
> - gdb_printf (_("[%s exited]\n"),
> - target_pid_to_str (retval).c_str ());
> delete_thread (find_thread_ptid (this, retval));
> target_continue_no_signal (ptid);
> goto wait_again;
> @@ -2222,9 +2219,6 @@ procfs_target::wait (ptid_t ptid, struct target_waitstatus *status,
> }
> else if (what == SYS_lwp_exit)
> {
> - if (print_thread_events)
> - gdb_printf (_("[%s exited]\n"),
> - target_pid_to_str (retval).c_str ());
> delete_thread (find_thread_ptid (this, retval));
> status->set_spurious ();
> return retval;
> diff --git a/gdb/python/py-inferior.c b/gdb/python/py-inferior.c
> index 4d5e09db680..be5597c4a2e 100644
> --- a/gdb/python/py-inferior.c
> +++ b/gdb/python/py-inferior.c
> @@ -360,7 +360,9 @@ add_thread_object (struct thread_info *tp)
> }
>
> static void
> -delete_thread_object (struct thread_info *tp, int ignore)
> +delete_thread_object (thread_info *tp,
> + gdb::optional<ULONGEST> /* exit_code */,
> + bool /* silent */)
> {
> if (!gdb_python_initialized)
> return;
> diff --git a/gdb/thread.c b/gdb/thread.c
> index 2ca3a867d8c..7ab30562fd3 100644
> --- a/gdb/thread.c
> +++ b/gdb/thread.c
> @@ -192,7 +192,8 @@ clear_thread_inferior_resources (struct thread_info *tp)
> /* See gdbthread.h. */
>
> void
> -set_thread_exited (thread_info *tp, bool silent)
> +set_thread_exited (thread_info *tp, gdb::optional<ULONGEST> exit_code,
> + bool silent)
> {
> /* Dead threads don't need to step-over. Remove from chain. */
> if (thread_is_in_step_over_chain (tp))
> @@ -211,7 +212,22 @@ set_thread_exited (thread_info *tp, bool silent)
> if (proc_target != nullptr)
> proc_target->maybe_remove_resumed_with_pending_wait_status (tp);
>
> - gdb::observers::thread_exit.notify (tp, silent);
> + if (!silent && print_thread_events)
> + {
> + if (exit_code.has_value ())
> + {
> + gdb_printf (_("[%s exited with code %s]\n"),
> + target_pid_to_str (tp->ptid).c_str (),
> + pulongest (*exit_code));
> + }
> + else
> + {
> + gdb_printf (_("[%s exited]\n"),
> + target_pid_to_str (tp->ptid).c_str ());
> + }
> + }
> +
> + gdb::observers::thread_exit.notify (tp, exit_code, silent);
>
> /* Tag it as exited. */
> tp->state = THREAD_EXITED;
> @@ -468,20 +484,22 @@ global_thread_step_over_chain_remove (struct thread_info *tp)
> global_thread_step_over_list.erase (it);
> }
>
> -/* Delete the thread referenced by THR. If SILENT, don't notify
> - the observer of this exit.
> -
> - THR must not be NULL or a failed assertion will be raised. */
> +/* Helper for the different delete_thread variants. */
>
> static void
> -delete_thread_1 (thread_info *thr, bool silent)
> +delete_thread_1 (thread_info *thr, gdb::optional<ULONGEST> exit_code,
> + bool silent)
> {
> gdb_assert (thr != nullptr);
>
> - threads_debug_printf ("deleting thread %s, silent = %d",
> - thr->ptid.to_string ().c_str (), silent);
> + threads_debug_printf ("deleting thread %s, exit_code = %s, silent = %d",
> + thr->ptid.to_string ().c_str (),
> + (exit_code.has_value ()
> + ? pulongest (*exit_code)
> + : "<none>"),
> + silent);
>
> - set_thread_exited (thr, silent);
> + set_thread_exited (thr, exit_code, silent);
>
> if (!thr->deletable ())
> {
> @@ -497,16 +515,25 @@ delete_thread_1 (thread_info *thr, bool silent)
>
> /* See gdbthread.h. */
>
> +void
> +delete_thread_with_exit_code (thread_info *thread, ULONGEST exit_code,
> + bool silent)
> +{
> + delete_thread_1 (thread, exit_code, false /* not silent */);
> +}
> +
> +/* See gdbthread.h. */
> +
> void
> delete_thread (thread_info *thread)
> {
> - delete_thread_1 (thread, false /* not silent */);
> + delete_thread_1 (thread, {}, false /* not silent */);
> }
>
> void
> delete_thread_silent (thread_info *thread)
> {
> - delete_thread_1 (thread, true /* silent */);
> + delete_thread_1 (thread, {}, true /* not silent */);
> }
>
> struct thread_info *
> diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
> index ee4e78bdabf..2764fc694b3 100644
> --- a/gdb/windows-nat.c
> +++ b/gdb/windows-nat.c
> @@ -611,21 +611,13 @@ windows_nat_target::delete_thread (ptid_t ptid, DWORD exit_code,
>
> id = ptid.lwp ();
>
> - /* Emit a notification about the thread being deleted.
> -
> - Note that no notification was printed when the main thread
> + /* Note that no notification was printed when the main thread
> was created, and thus, unless in verbose mode, we should be
> symmetrical, and avoid that notification for the main thread
> here as well. */
> -
> - if (info_verbose)
> - gdb_printf ("[Deleting %s]\n", target_pid_to_str (ptid).c_str ());
> - else if (print_thread_events && !main_thread_p)
> - gdb_printf (_("[%s exited with code %u]\n"),
> - target_pid_to_str (ptid).c_str (),
> - (unsigned) exit_code);
> -
> - ::delete_thread (find_thread_ptid (this, ptid));
> + bool silent = (main_thread_p && !info_verbose);
> + thread_info *todel = find_thread_ptid (this, ptid);
> + delete_thread_with_exit_code (todel, exit_code, silent);
>
> auto iter = std::find_if (windows_process.thread_list.begin (),
> windows_process.thread_list.end (),
> --
> 2.36.0
On 2023-02-04 4:05 p.m., Andrew Burgess wrote:
> You mention gdb.threads/attach-many-short-lived-threads.exp as an
> example, but I don't think that test actually fails due to this issue,
> right?
Right.
> It might be worth mentioning gdb.threads/thread-specific-bp.exp, that is
> a test script that should actually start passing after this commit.
>
Meanwhile, this:
commit 89702edd933a5595557bcd9cc4a0dcc3262226d4
Author: Tom de Vries <tdevries@suse.de>
AuthorDate: Thu Mar 9 12:31:26 2023 +0100
Commit: Tom de Vries <tdevries@suse.de>
CommitDate: Thu Mar 9 12:31:26 2023 +0100
[gdb/testsuite] Fix gdb.threads/thread-specific-bp.exp on native-gdbserver
fixed that test in a different way, so this series no longer has an
effect there.
Your tests for PR gdb/30129 have since gone in too, so I'm referring to
those instead, and also removing their kfails, of course.
Below's the updated patch. I've also pushed the whole series to the
users/palves/step-over-thread-exit-v3.1
branch, for your convenience.
Let me know what you think.
From 9ec64120f3208d2ef4294e261e8641184d1bf2b9 Mon Sep 17 00:00:00 2001
From: Pedro Alves <pedro@palves.net>
Date: Tue, 21 Jun 2022 19:30:48 +0100
Subject: [PATCH] Centralize "[Thread ...exited]" notifications
Currently, each target backend is responsible for printing "[Thread
...exited]" before deleting a thread. This leads to unnecessary
differences between targets, like e.g. with the remote target, we
never print such messages, even though we do print "[New Thread ...]".
E.g., debugging the gdb.threads/attach-many-short-lived-threads.exp
with gdbserver, letting it run for a bit, and then pressing Ctrl-C, we
currently see:
(gdb) c
Continuing.
^C[New Thread 3850398.3887449]
[New Thread 3850398.3887500]
[New Thread 3850398.3887551]
[New Thread 3850398.3887602]
[New Thread 3850398.3887653]
...
Thread 1 "attach-many-sho" received signal SIGINT, Interrupt.
0x00007ffff7e6a23f in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7fffffffda80, rem=rem@entry=0x7fffffffda80)
at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
78 in ../sysdeps/unix/sysv/linux/clock_nanosleep.c
(gdb)
Above, we only see "New Thread" notifications, even though threads
were deleted.
After this patch, we'll see:
(gdb) c
Continuing.
^C[Thread 3558643.3577053 exited]
[Thread 3558643.3577104 exited]
[Thread 3558643.3577155 exited]
[Thread 3558643.3579603 exited]
...
[New Thread 3558643.3597415]
[New Thread 3558643.3600015]
[New Thread 3558643.3599965]
...
Thread 1 "attach-many-sho" received signal SIGINT, Interrupt.
0x00007ffff7e6a23f in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7fffffffda80, rem=rem@entry=0x7fffffffda80)
at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
78 in ../sysdeps/unix/sysv/linux/clock_nanosleep.c
(gdb) q
This commit fixes this by moving the thread exit printing to common
code instead, triggered from within delete_thread (or rather,
set_thread_exited).
There's one wrinkle, though. While most targest want to print:
[Thread ... exited]
the Windows target wants to print:
[Thread ... exited with code <exit_code>]
... and sometimes wants to suppress the notification for the main
thread. To address that, this commits adds a delete_thread_with_code
function, only used by that target (so far).
The fact that remote is missing thread exited messages is PR
remote/30129, and kfailed in gdb.threads/thread-bp-deleted.exp and
gdb.mi/mi-thread-bp-deleted.exp. This commit removes the now
unnecessary kfails (and kpasses) from those testcases, switching to
simpler gdb_assert instead.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=30129
Change-Id: I06ec07b7c51527872a9713dd11cf7867b50fc5ff
---
gdb/annotate.c | 4 +-
gdb/breakpoint.c | 4 +-
gdb/fbsd-nat.c | 3 --
gdb/gdbthread.h | 22 ++++++--
gdb/inferior.c | 2 +-
gdb/inferior.h | 2 +
gdb/linux-nat.c | 11 ++--
gdb/mi/mi-interp.c | 8 ++-
gdb/netbsd-nat.c | 4 --
gdb/observable.h | 11 ++--
gdb/procfs.c | 6 ---
gdb/python/py-inferior.c | 4 +-
gdb/testsuite/gdb.mi/mi-thread-bp-deleted.exp | 18 ++-----
.../gdb.threads/thread-bp-deleted.exp | 12 +----
gdb/thread.c | 51 ++++++++++++++-----
gdb/windows-nat.c | 16 ++----
16 files changed, 95 insertions(+), 83 deletions(-)
diff --git a/gdb/annotate.c b/gdb/annotate.c
index 60fe6ccd5c2..a24841f7c0d 100644
--- a/gdb/annotate.c
+++ b/gdb/annotate.c
@@ -233,7 +233,9 @@ annotate_thread_changed (void)
/* Emit notification on thread exit. */
static void
-annotate_thread_exited (struct thread_info *t, int silent)
+annotate_thread_exited (thread_info *t,
+ gdb::optional<ULONGEST> exit_code,
+ bool /* silent */)
{
if (annotation_level > 1)
{
diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
index a42d26fd25a..25c98919d94 100644
--- a/gdb/breakpoint.c
+++ b/gdb/breakpoint.c
@@ -3243,7 +3243,9 @@ remove_breakpoints (void)
that thread. */
static void
-remove_threaded_breakpoints (struct thread_info *tp, int silent)
+remove_threaded_breakpoints (thread_info *tp,
+ gdb::optional<ULONGEST> exit_code,
+ bool /* silent */)
{
for (breakpoint *b : all_breakpoints_safe ())
{
diff --git a/gdb/fbsd-nat.c b/gdb/fbsd-nat.c
index 27d2fe45092..612ebcc924f 100644
--- a/gdb/fbsd-nat.c
+++ b/gdb/fbsd-nat.c
@@ -1300,9 +1300,6 @@ fbsd_nat_target::wait_1 (ptid_t ptid, struct target_waitstatus *ourstatus,
{
fbsd_lwp_debug_printf ("deleting thread for LWP %u",
pl.pl_lwpid);
- if (print_thread_events)
- gdb_printf (_("[%s exited]\n"),
- target_pid_to_str (wptid).c_str ());
low_delete_thread (thr);
delete_thread (thr);
}
diff --git a/gdb/gdbthread.h b/gdb/gdbthread.h
index 79dedb23d4d..905ed8bddd5 100644
--- a/gdb/gdbthread.h
+++ b/gdb/gdbthread.h
@@ -636,16 +636,30 @@ extern struct thread_info *add_thread_with_info (process_stratum_target *targ,
/* Delete thread THREAD and notify of thread exit. If the thread is
currently not deletable, don't actually delete it but still tag it
- as exited and do the notification. */
-extern void delete_thread (struct thread_info *thread);
+ as exited and do the notification. EXIT_CODE is the thread's exit
+ code. If SILENT, don't actually notify the CLI. THREAD must not
+ be NULL or an assertion will fail. */
+extern void delete_thread_with_exit_code (thread_info *thread,
+ ULONGEST exit_code,
+ bool silent = false);
+
+/* Delete thread THREAD and notify of thread exit. If the thread is
+ currently not deletable, don't actually delete it but still tag it
+ as exited and do the notification. THREAD must not be NULL or an
+ assertion will fail. */
+extern void delete_thread (thread_info *thread);
/* Like delete_thread, but be quiet about it. Used when the process
this thread belonged to has already exited, for example. */
extern void delete_thread_silent (struct thread_info *thread);
/* Mark the thread exited, but don't delete it or remove it from the
- inferior thread list. */
-extern void set_thread_exited (thread_info *tp, bool silent);
+ inferior thread list. EXIT_CODE is the thread's exit code, if
+ available. If SILENT, then don't inform the CLI about the
+ exit. */
+extern void set_thread_exited (thread_info *tp,
+ gdb::optional<ULONGEST> exit_code = {},
+ bool silent = false);
/* Delete a step_resume_breakpoint from the thread database. */
extern void delete_step_resume_breakpoint (struct thread_info *);
diff --git a/gdb/inferior.c b/gdb/inferior.c
index 80d53bb4e81..ee710964249 100644
--- a/gdb/inferior.c
+++ b/gdb/inferior.c
@@ -223,7 +223,7 @@ inferior::clear_thread_list ()
{
threads_debug_printf ("deleting thread %s",
thr->ptid.to_string ().c_str ());
- set_thread_exited (thr, true);
+ set_thread_exited (thr, {}, true);
if (thr->deletable ())
delete thr;
});
diff --git a/gdb/inferior.h b/gdb/inferior.h
index d64e7cc015c..4c2d0505a91 100644
--- a/gdb/inferior.h
+++ b/gdb/inferior.h
@@ -697,6 +697,8 @@ extern void detach_inferior (inferior *inf);
extern void exit_inferior (inferior *inf);
+/* Like exit_inferior, but be quiet -- don't announce the exit of the
+ inferior's threads to the CLI. */
extern void exit_inferior_silent (inferior *inf);
extern void exit_inferior_num_silent (int num);
diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index 043c9a0489c..dcd5d07728d 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -916,15 +916,10 @@ linux_nat_switch_fork (ptid_t new_ptid)
static void
exit_lwp (struct lwp_info *lp, bool del_thread = true)
{
- struct thread_info *th = find_thread_ptid (linux_target, lp->ptid);
-
- if (th)
+ if (del_thread)
{
- if (print_thread_events)
- gdb_printf (_("[%s exited]\n"),
- target_pid_to_str (lp->ptid).c_str ());
-
- if (del_thread)
+ thread_info *th = find_thread_ptid (linux_target, lp->ptid);
+ if (th != nullptr)
delete_thread (th);
}
diff --git a/gdb/mi/mi-interp.c b/gdb/mi/mi-interp.c
index e1244f3df43..dd1dc3126eb 100644
--- a/gdb/mi/mi-interp.c
+++ b/gdb/mi/mi-interp.c
@@ -68,7 +68,9 @@ static void mi_on_normal_stop (struct bpstat *bs, int print_frame);
static void mi_on_no_history (void);
static void mi_new_thread (struct thread_info *t);
-static void mi_thread_exit (struct thread_info *t, int silent);
+static void mi_thread_exit (thread_info *t,
+ gdb::optional<ULONGEST> exit_code,
+ bool silent);
static void mi_record_changed (struct inferior*, int, const char *,
const char *);
static void mi_inferior_added (struct inferior *inf);
@@ -345,8 +347,10 @@ mi_new_thread (struct thread_info *t)
}
}
+/* Observer for the thread_exit notification. */
+
static void
-mi_thread_exit (struct thread_info *t, int silent)
+mi_thread_exit (thread_info *t, gdb::optional<ULONGEST> exit_code, bool silent)
{
SWITCH_THRU_ALL_UIS ()
{
diff --git a/gdb/netbsd-nat.c b/gdb/netbsd-nat.c
index 37f2fa49b0b..133a3cf788f 100644
--- a/gdb/netbsd-nat.c
+++ b/gdb/netbsd-nat.c
@@ -625,10 +625,6 @@ nbsd_nat_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
{
/* NetBSD does not store an LWP exit status. */
ourstatus->set_thread_exited (0);
-
- if (print_thread_events)
- gdb_printf (_("[%s exited]\n"),
- target_pid_to_str (wptid).c_str ());
}
/* The GDB core expects that the rest of the threads are running. */
diff --git a/gdb/observable.h b/gdb/observable.h
index efd0446e168..d6be15348d5 100644
--- a/gdb/observable.h
+++ b/gdb/observable.h
@@ -126,10 +126,13 @@ extern observable<struct objfile */* objfile */> free_objfile;
/* The thread specified by T has been created. */
extern observable<struct thread_info */* t */> new_thread;
-/* The thread specified by T has exited. The SILENT argument
- indicates that gdb is removing the thread from its tables without
- wanting to notify the user about it. */
-extern observable<struct thread_info */* t */, int /* silent */> thread_exit;
+/* The thread specified by T has exited. EXIT_CODE is the thread's
+ exit code, if available. The SILENT argument indicates that GDB is
+ removing the thread from its tables without wanting to notify the
+ CLI about it. */
+extern observable<thread_info */* t */,
+ gdb::optional<ULONGEST> /* exit_code */,
+ bool /* silent */> thread_exit;
/* An explicit stop request was issued to PTID. If PTID equals
minus_one_ptid, the request applied to all threads. If
diff --git a/gdb/procfs.c b/gdb/procfs.c
index 741e62a2402..a8a50c4ddc5 100644
--- a/gdb/procfs.c
+++ b/gdb/procfs.c
@@ -2115,9 +2115,6 @@ procfs_target::wait (ptid_t ptid, struct target_waitstatus *status,
case PR_SYSENTRY:
if (what == SYS_lwp_exit)
{
- if (print_thread_events)
- gdb_printf (_("[%s exited]\n"),
- target_pid_to_str (retval).c_str ());
delete_thread (find_thread_ptid (this, retval));
target_continue_no_signal (ptid);
goto wait_again;
@@ -2222,9 +2219,6 @@ procfs_target::wait (ptid_t ptid, struct target_waitstatus *status,
}
else if (what == SYS_lwp_exit)
{
- if (print_thread_events)
- gdb_printf (_("[%s exited]\n"),
- target_pid_to_str (retval).c_str ());
delete_thread (find_thread_ptid (this, retval));
status->set_spurious ();
return retval;
diff --git a/gdb/python/py-inferior.c b/gdb/python/py-inferior.c
index 8b21f28afbe..5bb9d6a9fdc 100644
--- a/gdb/python/py-inferior.c
+++ b/gdb/python/py-inferior.c
@@ -360,7 +360,9 @@ add_thread_object (struct thread_info *tp)
}
static void
-delete_thread_object (struct thread_info *tp, int ignore)
+delete_thread_object (thread_info *tp,
+ gdb::optional<ULONGEST> /* exit_code */,
+ bool /* silent */)
{
if (!gdb_python_initialized)
return;
diff --git a/gdb/testsuite/gdb.mi/mi-thread-bp-deleted.exp b/gdb/testsuite/gdb.mi/mi-thread-bp-deleted.exp
index 0ebca924801..6830991cc81 100644
--- a/gdb/testsuite/gdb.mi/mi-thread-bp-deleted.exp
+++ b/gdb/testsuite/gdb.mi/mi-thread-bp-deleted.exp
@@ -233,19 +233,11 @@ foreach_mi_ui_mode mode {
exp_continue
}
- # The output has arrived! Check how we did. There are other bugs
- # that come into play here which change what output we'll see.
- if { $saw_mi_thread_exited && $saw_mi_bp_deleted \
- && $saw_cli_thread_exited \
- && $saw_cli_bp_deleted } {
- kpass "gdb/30129" $gdb_test_name
- } elseif { $saw_mi_thread_exited && $saw_mi_bp_deleted \
- && !$saw_cli_thread_exited \
- && $saw_cli_bp_deleted } {
- kfail "gdb/30129" $gdb_test_name
- } else {
- fail "$gdb_test_name"
- }
+ # The output has arrived! Check how we did.
+ gdb_assert { $saw_mi_thread_exited && $saw_mi_bp_deleted \
+ && $saw_cli_thread_exited \
+ && $saw_cli_bp_deleted } \
+ $gdb_test_name
}
}
diff --git a/gdb/testsuite/gdb.threads/thread-bp-deleted.exp b/gdb/testsuite/gdb.threads/thread-bp-deleted.exp
index 019bdddee81..92178ff838b 100644
--- a/gdb/testsuite/gdb.threads/thread-bp-deleted.exp
+++ b/gdb/testsuite/gdb.threads/thread-bp-deleted.exp
@@ -155,17 +155,7 @@ if {$is_remote} {
exp_continue
}
- # When PR gdb/30129 is fixed then this can all be collapsed down
- # into a single gdb_assert call. This is split out like this
- # because the SAW_BP_DELETED part is working, and we want to
- # spot if that stops working.
- if { $saw_thread_exited && $saw_bp_deleted } {
- kpass "gdb/30129" $gdb_test_name
- } elseif {!$saw_thread_exited && $saw_bp_deleted} {
- kfail "gdb/30129" $gdb_test_name
- } else {
- fail $gdb_test_name
- }
+ gdb_assert { $saw_thread_exited && $saw_bp_deleted } $gdb_test_name
}
}
} else {
diff --git a/gdb/thread.c b/gdb/thread.c
index 0c5039530b0..d6b3f074e78 100644
--- a/gdb/thread.c
+++ b/gdb/thread.c
@@ -193,7 +193,8 @@ clear_thread_inferior_resources (struct thread_info *tp)
/* See gdbthread.h. */
void
-set_thread_exited (thread_info *tp, bool silent)
+set_thread_exited (thread_info *tp, gdb::optional<ULONGEST> exit_code,
+ bool silent)
{
/* Dead threads don't need to step-over. Remove from chain. */
if (thread_is_in_step_over_chain (tp))
@@ -212,7 +213,22 @@ set_thread_exited (thread_info *tp, bool silent)
if (proc_target != nullptr)
proc_target->maybe_remove_resumed_with_pending_wait_status (tp);
- gdb::observers::thread_exit.notify (tp, silent);
+ if (!silent && print_thread_events)
+ {
+ if (exit_code.has_value ())
+ {
+ gdb_printf (_("[%s exited with code %s]\n"),
+ target_pid_to_str (tp->ptid).c_str (),
+ pulongest (*exit_code));
+ }
+ else
+ {
+ gdb_printf (_("[%s exited]\n"),
+ target_pid_to_str (tp->ptid).c_str ());
+ }
+ }
+
+ gdb::observers::thread_exit.notify (tp, exit_code, silent);
/* Tag it as exited. */
tp->state = THREAD_EXITED;
@@ -469,20 +485,22 @@ global_thread_step_over_chain_remove (struct thread_info *tp)
global_thread_step_over_list.erase (it);
}
-/* Delete the thread referenced by THR. If SILENT, don't notify
- the observer of this exit.
-
- THR must not be NULL or a failed assertion will be raised. */
+/* Helper for the different delete_thread variants. */
static void
-delete_thread_1 (thread_info *thr, bool silent)
+delete_thread_1 (thread_info *thr, gdb::optional<ULONGEST> exit_code,
+ bool silent)
{
gdb_assert (thr != nullptr);
- threads_debug_printf ("deleting thread %s, silent = %d",
- thr->ptid.to_string ().c_str (), silent);
+ threads_debug_printf ("deleting thread %s, exit_code = %s, silent = %d",
+ thr->ptid.to_string ().c_str (),
+ (exit_code.has_value ()
+ ? pulongest (*exit_code)
+ : "<none>"),
+ silent);
- set_thread_exited (thr, silent);
+ set_thread_exited (thr, exit_code, silent);
if (!thr->deletable ())
{
@@ -498,16 +516,25 @@ delete_thread_1 (thread_info *thr, bool silent)
/* See gdbthread.h. */
+void
+delete_thread_with_exit_code (thread_info *thread, ULONGEST exit_code,
+ bool silent)
+{
+ delete_thread_1 (thread, exit_code, false /* not silent */);
+}
+
+/* See gdbthread.h. */
+
void
delete_thread (thread_info *thread)
{
- delete_thread_1 (thread, false /* not silent */);
+ delete_thread_1 (thread, {}, false /* not silent */);
}
void
delete_thread_silent (thread_info *thread)
{
- delete_thread_1 (thread, true /* silent */);
+ delete_thread_1 (thread, {}, true /* not silent */);
}
struct thread_info *
diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
index 26ad04b27be..03123e777eb 100644
--- a/gdb/windows-nat.c
+++ b/gdb/windows-nat.c
@@ -612,21 +612,13 @@ windows_nat_target::delete_thread (ptid_t ptid, DWORD exit_code,
id = ptid.lwp ();
- /* Emit a notification about the thread being deleted.
-
- Note that no notification was printed when the main thread
+ /* Note that no notification was printed when the main thread
was created, and thus, unless in verbose mode, we should be
symmetrical, and avoid that notification for the main thread
here as well. */
-
- if (info_verbose)
- gdb_printf ("[Deleting %s]\n", target_pid_to_str (ptid).c_str ());
- else if (print_thread_events && !main_thread_p)
- gdb_printf (_("[%s exited with code %u]\n"),
- target_pid_to_str (ptid).c_str (),
- (unsigned) exit_code);
-
- ::delete_thread (find_thread_ptid (this, ptid));
+ bool silent = (main_thread_p && !info_verbose);
+ thread_info *todel = find_thread_ptid (this, ptid);
+ delete_thread_with_exit_code (todel, exit_code, silent);
auto iter = std::find_if (windows_process.thread_list.begin (),
windows_process.thread_list.end (),
base-commit: 2562954ede66f32bff7d985e752b8052c2ae5775
prerequisite-patch-id: bbc9918ac5f79de07a29f34ec072794d270f942d
prerequisite-patch-id: c0bc5b4f99193bb50cb31f551673de1808dcda35
prerequisite-patch-id: ab0838f2bc02931d7e830abe23833e7a8224442c
prerequisite-patch-id: f00d4a73e58c28ff2e92e7bfd5f644503de81054
prerequisite-patch-id: cc6043ae4b28f0c93f798c5864393509d793ab28
prerequisite-patch-id: 254a23b7d7cec889924daaf288304494c93fe1aa
prerequisite-patch-id: b1fe92da846e52cce1e9f13498cf668c5cdd6ee4
prerequisite-patch-id: 775dbe2e67b84cb4fcbcf1a1d787135ffed616ce
prerequisite-patch-id: b93a162a108b255e818453c05f2fe0301bbf05a3
prerequisite-patch-id: ea5513927a9e5e2ed866004a5a4d49fd6aff4f73
prerequisite-patch-id: 9792772eeaeb80692bfea4ab089a57b371b1979c
prerequisite-patch-id: 4e5f0e4dbbf8aeba626e23d37e6d31ed815385dc
prerequisite-patch-id: 8a36a3aaa1a67508b457e0531babe6202e91bbd2
prerequisite-patch-id: 4ff7d91769a04054d9dd04827017b37d57ec6aca
prerequisite-patch-id: 6615810ee06c2bd62885ac620dd693e851ab9c21
prerequisite-patch-id: f4a22f1604e46c73ab3847459af3b77ec36f8ff8
prerequisite-patch-id: b836d8555b80b08b380405d9bd1d2724f750dc8e
prerequisite-patch-id: dc3c3f4f4a1d30557b636c8c7cefc5dc2cb8fa97
prerequisite-patch-id: 7941c40b2bc5d5b7384a376f0733a7bbb1646484
prerequisite-patch-id: b8261218aa0bb0a40ae72a72ee24ad8c01efce9a
prerequisite-patch-id: ab8af04341457c6db4c0bff3d85b0adec2113970
prerequisite-patch-id: 084b68a90f8fdd2cfe667a1cbe0c8b171b4551f3
prerequisite-patch-id: a05d1cc3d645a3765fad072cf93d7d803442dba4
prerequisite-patch-id: 64b5e99813b6507ee9d6adec09746227eb3a006b
prerequisite-patch-id: 0d2098a7d10285588614db649783d013684f55a8
prerequisite-patch-id: ad7e5efca7c9e2160caf5ce216e347146b7d6c93
prerequisite-patch-id: 39c82dddeb7135a8a5dcfeeda3f5990d1564f845
prerequisite-patch-id: 4d3f5c603d36dc2df7b9363021044fdab0b60c90
prerequisite-patch-id: 25d7d10e191b1b7310e2c95a787a1b48286302b8
Andrew Burgess <aburgess@redhat.com> writes:
> Pedro Alves <pedro@palves.net> writes:
>
>> Currently, each target backend is responsible for printing "[Thread
>> ...exited]" before deleting a thread. This leads to unnecessary
>> differences between targets, like e.g. with the remote target, we
>> never print such messages, even though we do print "[New Thread ...]".
>>
>> E.g., debugging the gdb.threads/attach-many-short-lived-threads.exp
>> with gdbserver, letting it run for a bit, and then pressing Ctrl-C, we
>> currently see:
>
> I'm currently writing some tests that run into this issue, and I needed
> a bug-id to use in the XFAIL messages. I've created PR gdb/30129 for
> this issue:
>
> https://sourceware.org/bugzilla/show_bug.cgi?id=30129
With the commit message updated to mention the bug-id and (some) of the
tests fixed by this commit, this looks good.
Reviewed-By: Andrew Burgess <aburgess@redhat.com>
Thanks,
Andrew
@@ -233,7 +233,9 @@ annotate_thread_changed (void)
/* Emit notification on thread exit. */
static void
-annotate_thread_exited (struct thread_info *t, int silent)
+annotate_thread_exited (thread_info *t,
+ gdb::optional<ULONGEST> exit_code,
+ bool /* silent */)
{
if (annotation_level > 1)
{
@@ -3237,7 +3237,9 @@ remove_breakpoints (void)
that thread. */
static void
-remove_threaded_breakpoints (struct thread_info *tp, int silent)
+remove_threaded_breakpoints (thread_info *tp,
+ gdb::optional<ULONGEST> exit_code,
+ bool /* silent */)
{
for (breakpoint *b : all_breakpoints_safe ())
{
@@ -1300,9 +1300,6 @@ fbsd_nat_target::wait_1 (ptid_t ptid, struct target_waitstatus *ourstatus,
{
fbsd_lwp_debug_printf ("deleting thread for LWP %u",
pl.pl_lwpid);
- if (print_thread_events)
- gdb_printf (_("[%s exited]\n"),
- target_pid_to_str (wptid).c_str ());
low_delete_thread (thr);
delete_thread (thr);
}
@@ -636,16 +636,30 @@ extern struct thread_info *add_thread_with_info (process_stratum_target *targ,
/* Delete thread THREAD and notify of thread exit. If the thread is
currently not deletable, don't actually delete it but still tag it
- as exited and do the notification. */
-extern void delete_thread (struct thread_info *thread);
+ as exited and do the notification. EXIT_CODE is the thread's exit
+ code. If SILENT, don't actually notify the CLI. THREAD must not
+ be NULL or an assertion will fail. */
+extern void delete_thread_with_exit_code (thread_info *thread,
+ ULONGEST exit_code,
+ bool silent = false);
+
+/* Delete thread THREAD and notify of thread exit. If the thread is
+ currently not deletable, don't actually delete it but still tag it
+ as exited and do the notification. THREAD must not be NULL or an
+ assertion will fail. */
+extern void delete_thread (thread_info *thread);
/* Like delete_thread, but be quiet about it. Used when the process
this thread belonged to has already exited, for example. */
extern void delete_thread_silent (struct thread_info *thread);
/* Mark the thread exited, but don't delete it or remove it from the
- inferior thread list. */
-extern void set_thread_exited (thread_info *tp, bool silent);
+ inferior thread list. EXIT_CODE is the thread's exit code, if
+ available. If SILENT, then don't inform the CLI about the
+ exit. */
+extern void set_thread_exited (thread_info *tp,
+ gdb::optional<ULONGEST> exit_code = {},
+ bool silent = false);
/* Delete a step_resume_breakpoint from the thread database. */
extern void delete_step_resume_breakpoint (struct thread_info *);
@@ -174,7 +174,7 @@ inferior::clear_thread_list ()
{
threads_debug_printf ("deleting thread %s",
thr->ptid.to_string ().c_str ());
- set_thread_exited (thr, true);
+ set_thread_exited (thr, {}, true);
if (thr->deletable ())
delete thr;
});
@@ -628,6 +628,8 @@ extern void detach_inferior (inferior *inf);
extern void exit_inferior (inferior *inf);
+/* Like exit_inferior, but be quiet -- don't announce the exit of the
+ inferior's threads to the CLI. */
extern void exit_inferior_silent (inferior *inf);
extern void exit_inferior_num_silent (int num);
@@ -916,15 +916,10 @@ linux_nat_switch_fork (ptid_t new_ptid)
static void
exit_lwp (struct lwp_info *lp, bool del_thread = true)
{
- struct thread_info *th = find_thread_ptid (linux_target, lp->ptid);
-
- if (th)
+ if (del_thread)
{
- if (print_thread_events)
- gdb_printf (_("[%s exited]\n"),
- target_pid_to_str (lp->ptid).c_str ());
-
- if (del_thread)
+ thread_info *th = find_thread_ptid (linux_target, lp->ptid);
+ if (th != nullptr)
delete_thread (th);
}
@@ -68,7 +68,9 @@ static void mi_on_normal_stop (struct bpstat *bs, int print_frame);
static void mi_on_no_history (void);
static void mi_new_thread (struct thread_info *t);
-static void mi_thread_exit (struct thread_info *t, int silent);
+static void mi_thread_exit (thread_info *t,
+ gdb::optional<ULONGEST> exit_code,
+ bool silent);
static void mi_record_changed (struct inferior*, int, const char *,
const char *);
static void mi_inferior_added (struct inferior *inf);
@@ -351,8 +353,10 @@ mi_new_thread (struct thread_info *t)
}
}
+/* Observer for the thread_exit notification. */
+
static void
-mi_thread_exit (struct thread_info *t, int silent)
+mi_thread_exit (thread_info *t, gdb::optional<ULONGEST> exit_code, bool silent)
{
SWITCH_THRU_ALL_UIS ()
{
@@ -625,10 +625,6 @@ nbsd_nat_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
{
/* NetBSD does not store an LWP exit status. */
ourstatus->set_thread_exited (0);
-
- if (print_thread_events)
- gdb_printf (_("[%s exited]\n"),
- target_pid_to_str (wptid).c_str ());
}
/* The GDB core expects that the rest of the threads are running. */
@@ -126,10 +126,13 @@ extern observable<struct objfile */* objfile */> free_objfile;
/* The thread specified by T has been created. */
extern observable<struct thread_info */* t */> new_thread;
-/* The thread specified by T has exited. The SILENT argument
- indicates that gdb is removing the thread from its tables without
- wanting to notify the user about it. */
-extern observable<struct thread_info */* t */, int /* silent */> thread_exit;
+/* The thread specified by T has exited. EXIT_CODE is the thread's
+ exit code, if available. The SILENT argument indicates that GDB is
+ removing the thread from its tables without wanting to notify the
+ CLI about it. */
+extern observable<thread_info */* t */,
+ gdb::optional<ULONGEST> /* exit_code */,
+ bool /* silent */> thread_exit;
/* An explicit stop request was issued to PTID. If PTID equals
minus_one_ptid, the request applied to all threads. If
@@ -2115,9 +2115,6 @@ procfs_target::wait (ptid_t ptid, struct target_waitstatus *status,
case PR_SYSENTRY:
if (what == SYS_lwp_exit)
{
- if (print_thread_events)
- gdb_printf (_("[%s exited]\n"),
- target_pid_to_str (retval).c_str ());
delete_thread (find_thread_ptid (this, retval));
target_continue_no_signal (ptid);
goto wait_again;
@@ -2222,9 +2219,6 @@ procfs_target::wait (ptid_t ptid, struct target_waitstatus *status,
}
else if (what == SYS_lwp_exit)
{
- if (print_thread_events)
- gdb_printf (_("[%s exited]\n"),
- target_pid_to_str (retval).c_str ());
delete_thread (find_thread_ptid (this, retval));
status->set_spurious ();
return retval;
@@ -360,7 +360,9 @@ add_thread_object (struct thread_info *tp)
}
static void
-delete_thread_object (struct thread_info *tp, int ignore)
+delete_thread_object (thread_info *tp,
+ gdb::optional<ULONGEST> /* exit_code */,
+ bool /* silent */)
{
if (!gdb_python_initialized)
return;
@@ -192,7 +192,8 @@ clear_thread_inferior_resources (struct thread_info *tp)
/* See gdbthread.h. */
void
-set_thread_exited (thread_info *tp, bool silent)
+set_thread_exited (thread_info *tp, gdb::optional<ULONGEST> exit_code,
+ bool silent)
{
/* Dead threads don't need to step-over. Remove from chain. */
if (thread_is_in_step_over_chain (tp))
@@ -211,7 +212,22 @@ set_thread_exited (thread_info *tp, bool silent)
if (proc_target != nullptr)
proc_target->maybe_remove_resumed_with_pending_wait_status (tp);
- gdb::observers::thread_exit.notify (tp, silent);
+ if (!silent && print_thread_events)
+ {
+ if (exit_code.has_value ())
+ {
+ gdb_printf (_("[%s exited with code %s]\n"),
+ target_pid_to_str (tp->ptid).c_str (),
+ pulongest (*exit_code));
+ }
+ else
+ {
+ gdb_printf (_("[%s exited]\n"),
+ target_pid_to_str (tp->ptid).c_str ());
+ }
+ }
+
+ gdb::observers::thread_exit.notify (tp, exit_code, silent);
/* Tag it as exited. */
tp->state = THREAD_EXITED;
@@ -468,20 +484,22 @@ global_thread_step_over_chain_remove (struct thread_info *tp)
global_thread_step_over_list.erase (it);
}
-/* Delete the thread referenced by THR. If SILENT, don't notify
- the observer of this exit.
-
- THR must not be NULL or a failed assertion will be raised. */
+/* Helper for the different delete_thread variants. */
static void
-delete_thread_1 (thread_info *thr, bool silent)
+delete_thread_1 (thread_info *thr, gdb::optional<ULONGEST> exit_code,
+ bool silent)
{
gdb_assert (thr != nullptr);
- threads_debug_printf ("deleting thread %s, silent = %d",
- thr->ptid.to_string ().c_str (), silent);
+ threads_debug_printf ("deleting thread %s, exit_code = %s, silent = %d",
+ thr->ptid.to_string ().c_str (),
+ (exit_code.has_value ()
+ ? pulongest (*exit_code)
+ : "<none>"),
+ silent);
- set_thread_exited (thr, silent);
+ set_thread_exited (thr, exit_code, silent);
if (!thr->deletable ())
{
@@ -497,16 +515,25 @@ delete_thread_1 (thread_info *thr, bool silent)
/* See gdbthread.h. */
+void
+delete_thread_with_exit_code (thread_info *thread, ULONGEST exit_code,
+ bool silent)
+{
+ delete_thread_1 (thread, exit_code, false /* not silent */);
+}
+
+/* See gdbthread.h. */
+
void
delete_thread (thread_info *thread)
{
- delete_thread_1 (thread, false /* not silent */);
+ delete_thread_1 (thread, {}, false /* not silent */);
}
void
delete_thread_silent (thread_info *thread)
{
- delete_thread_1 (thread, true /* silent */);
+ delete_thread_1 (thread, {}, true /* not silent */);
}
struct thread_info *
@@ -611,21 +611,13 @@ windows_nat_target::delete_thread (ptid_t ptid, DWORD exit_code,
id = ptid.lwp ();
- /* Emit a notification about the thread being deleted.
-
- Note that no notification was printed when the main thread
+ /* Note that no notification was printed when the main thread
was created, and thus, unless in verbose mode, we should be
symmetrical, and avoid that notification for the main thread
here as well. */
-
- if (info_verbose)
- gdb_printf ("[Deleting %s]\n", target_pid_to_str (ptid).c_str ());
- else if (print_thread_events && !main_thread_p)
- gdb_printf (_("[%s exited with code %u]\n"),
- target_pid_to_str (ptid).c_str (),
- (unsigned) exit_code);
-
- ::delete_thread (find_thread_ptid (this, ptid));
+ bool silent = (main_thread_p && !info_verbose);
+ thread_info *todel = find_thread_ptid (this, ptid);
+ delete_thread_with_exit_code (todel, exit_code, silent);
auto iter = std::find_if (windows_process.thread_list.begin (),
windows_process.thread_list.end (),