support: Add support_wait_for_thread_exit
This commit is contained in:
parent
6090a4a1b3
commit
032d74eaf6
|
@ -83,9 +83,10 @@ libsupport-routines = \
|
|||
support_test_compare_blob \
|
||||
support_test_compare_failure \
|
||||
support_test_compare_string \
|
||||
support_write_file_string \
|
||||
support_test_main \
|
||||
support_test_verify_impl \
|
||||
support_wait_for_thread_exit \
|
||||
support_write_file_string \
|
||||
temp_file \
|
||||
timespec \
|
||||
timespec-time64 \
|
||||
|
|
|
@ -174,6 +174,10 @@ timer_t support_create_timer (uint64_t sec, long int nsec, bool repeat,
|
|||
/* Disable the timer TIMER. */
|
||||
void support_delete_timer (timer_t timer);
|
||||
|
||||
/* Wait until all threads except the current thread have exited (as
|
||||
far as the kernel is concerned). */
|
||||
void support_wait_for_thread_exit (void);
|
||||
|
||||
struct support_stack
|
||||
{
|
||||
void *stack;
|
||||
|
|
|
@ -0,0 +1,72 @@
|
|||
/* Wait until all threads except the current thread has exited.
|
||||
Copyright (C) 2021 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <dirent.h>
|
||||
#include <errno.h>
|
||||
#include <string.h>
|
||||
#include <support/check.h>
|
||||
#include <support/support.h>
|
||||
#include <unistd.h>
|
||||
|
||||
void
|
||||
support_wait_for_thread_exit (void)
|
||||
{
|
||||
#ifdef __linux__
|
||||
DIR *proc_self_task = opendir ("/proc/self/task");
|
||||
TEST_VERIFY_EXIT (proc_self_task != NULL);
|
||||
|
||||
while (true)
|
||||
{
|
||||
errno = 0;
|
||||
struct dirent *e = readdir (proc_self_task);
|
||||
if (e == NULL && errno != 0)
|
||||
FAIL_EXIT1 ("readdir: %m");
|
||||
if (e == NULL)
|
||||
{
|
||||
/* Only the main thread remains. Testing may continue. */
|
||||
closedir (proc_self_task);
|
||||
return;
|
||||
}
|
||||
|
||||
if (strcmp (e->d_name, ".") == 0 || strcmp (e->d_name, "..") == 0)
|
||||
continue;
|
||||
|
||||
int task_tid = atoi (e->d_name);
|
||||
if (task_tid <= 0)
|
||||
FAIL_EXIT1 ("Invalid /proc/self/task entry: %s", e->d_name);
|
||||
|
||||
if (task_tid == gettid ())
|
||||
/* The current thread. Keep scanning for other
|
||||
threads. */
|
||||
continue;
|
||||
|
||||
/* task_tid does not refer to this thread here, i.e., there is
|
||||
another running thread. */
|
||||
|
||||
/* Small timeout to give the thread a chance to exit. */
|
||||
usleep (50 * 1000);
|
||||
|
||||
/* Start scanning the directory from the start. */
|
||||
rewinddir (proc_self_task);
|
||||
}
|
||||
#else
|
||||
/* Use a large timeout because we cannot verify that the thread has
|
||||
exited. */
|
||||
usleep (5 * 1000 * 1000);
|
||||
#endif
|
||||
}
|
Loading…
Reference in New Issue