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gdb: print thread names in thread apply command output

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This makes the thread apply command print the thread's name.  The use
of target_pid_to_str is replaced by thread_target_id_str, which
provides the same output as "info threads".

Before:
(gdb) thread apply 2 bt

Thread 2 (Thread 0x7fd245602700 (LWP 3837)):
[...]

After:
(gdb) thread apply 2 bt

Thread 2 (Thread 0x7fd245602700 (LWP 3837) "HT cleanup"):
[...]

The thread's description header is pre-computed before running the
command since the command may change the selected inferior. This is
not permitted by thread_target_id_str as target_thread_name asserts
that `info->inf == current_inferior ()`.

This situation arises in the `gdb.threads/threadapply.exp` test which
kills and removes the inferior as part of a "thread apply" command.

gdb/ChangeLog:

        * thread.c (thr_try_catch_cmd): Print thread name.
This commit is contained in:
Jérémie Galarneau 2020-02-17 19:08:03 -05:00 committed by Simon Marchi
parent d4c9a4f87d
commit b65ce56541
2 changed files with 14 additions and 6 deletions
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4
gdb/ChangeLog
View File

@ -1,3 +1,7 @@
2020-02-26 Jérémie Galarneau <jeremie.galarneau@efficios.com>
* thread.c (thr_try_catch_cmd): Print thread name.
2020-02-26 Simon Marchi <simon.marchi@efficios.com>
* dwarf2/loc.h (dwarf2_fetch_die_loc_sect_off,

16
gdb/thread.c
View File

@ -1563,6 +1563,14 @@ thr_try_catch_cmd (thread_info *thr, const char *cmd, int from_tty,
const qcs_flags &flags)
{
switch_to_thread (thr);
/* The thread header is computed before running the command since
the command can change the inferior, which is not permitted
by thread_target_id_str. */
std::string thr_header =
string_printf (_("\nThread %s (%s):\n"), print_thread_id (thr),
thread_target_id_str (thr).c_str ());
try
{
std::string cmd_result = execute_command_to_string
@ -1570,9 +1578,7 @@ thr_try_catch_cmd (thread_info *thr, const char *cmd, int from_tty,
if (!flags.silent || cmd_result.length () > 0)
{
if (!flags.quiet)
printf_filtered (_("\nThread %s (%s):\n"),
print_thread_id (thr),
target_pid_to_str (inferior_ptid).c_str ());
printf_filtered ("%s", thr_header.c_str ());
printf_filtered ("%s", cmd_result.c_str ());
}
}
@ -1581,9 +1587,7 @@ thr_try_catch_cmd (thread_info *thr, const char *cmd, int from_tty,
if (!flags.silent)
{
if (!flags.quiet)
printf_filtered (_("\nThread %s (%s):\n"),
print_thread_id (thr),
target_pid_to_str (inferior_ptid).c_str ());
printf_filtered ("%s", thr_header.c_str ());
if (flags.cont)
printf_filtered ("%s\n", ex.what ());
else