mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-28 13:31:13 +00:00
124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
/* Test that pthread_kill succeeds during thread exit.
|
|
Copyright (C) 2021-2023 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/>. */
|
|
|
|
/* This test verifies that pthread_kill for a thread that is exiting
|
|
succeeds (with or without actually delivering the signal). */
|
|
|
|
#include <array_length.h>
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <support/xsignal.h>
|
|
#include <support/xthread.h>
|
|
#include <unistd.h>
|
|
|
|
/* Set to true by timeout_thread_function when the test should
|
|
terminate. */
|
|
static bool timeout;
|
|
|
|
static void *
|
|
timeout_thread_function (void *unused)
|
|
{
|
|
usleep (1000 * 1000);
|
|
__atomic_store_n (&timeout, true, __ATOMIC_RELAXED);
|
|
return NULL;
|
|
}
|
|
|
|
/* Used to synchronize the sending threads with the target thread and
|
|
main thread. */
|
|
static pthread_barrier_t barrier_1;
|
|
static pthread_barrier_t barrier_2;
|
|
|
|
/* The target thread to which signals are to be sent. */
|
|
static pthread_t target_thread;
|
|
|
|
/* Set by the main thread to true after timeout has been set to
|
|
true. */
|
|
static bool exiting;
|
|
|
|
static void *
|
|
sender_thread_function (void *unused)
|
|
{
|
|
while (true)
|
|
{
|
|
/* Wait until target_thread has been initialized. The target
|
|
thread and main thread participate in this barrier. */
|
|
xpthread_barrier_wait (&barrier_1);
|
|
|
|
if (exiting)
|
|
break;
|
|
|
|
xpthread_kill (target_thread, SIGUSR1);
|
|
|
|
/* Communicate that the signal has been sent. The main thread
|
|
participates in this barrier. */
|
|
xpthread_barrier_wait (&barrier_2);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void *
|
|
target_thread_function (void *unused)
|
|
{
|
|
target_thread = pthread_self ();
|
|
xpthread_barrier_wait (&barrier_1);
|
|
return NULL;
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
xsignal (SIGUSR1, SIG_IGN);
|
|
|
|
pthread_t thr_timeout = xpthread_create (NULL, timeout_thread_function, NULL);
|
|
|
|
pthread_t threads[4];
|
|
xpthread_barrier_init (&barrier_1, NULL, array_length (threads) + 2);
|
|
xpthread_barrier_init (&barrier_2, NULL, array_length (threads) + 1);
|
|
|
|
for (int i = 0; i < array_length (threads); ++i)
|
|
threads[i] = xpthread_create (NULL, sender_thread_function, NULL);
|
|
|
|
while (!__atomic_load_n (&timeout, __ATOMIC_RELAXED))
|
|
{
|
|
xpthread_create (NULL, target_thread_function, NULL);
|
|
|
|
/* Wait for the target thread to be set up and signal sending to
|
|
start. */
|
|
xpthread_barrier_wait (&barrier_1);
|
|
|
|
/* Wait for signal sending to complete. */
|
|
xpthread_barrier_wait (&barrier_2);
|
|
|
|
xpthread_join (target_thread);
|
|
}
|
|
|
|
exiting = true;
|
|
|
|
/* Signal the sending threads to exit. */
|
|
xpthread_create (NULL, target_thread_function, NULL);
|
|
xpthread_barrier_wait (&barrier_1);
|
|
|
|
for (int i = 0; i < array_length (threads); ++i)
|
|
xpthread_join (threads[i]);
|
|
xpthread_join (thr_timeout);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|