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/* Check if the thread created by POSIX timer using SIGEV_THREAD is
cancellable.
Copyright (C) 2020-2023 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/>. */
#include <stdio.h>
#include <time.h>
#include <signal.h>
#include <unistd.h>
#include <stdbool.h>
#include <support/check.h>
#include <support/test-driver.h>
#include <support/xthread.h>
static pthread_barrier_t barrier;
#define VALUE1_INITIAL 0
static __thread unsigned int value1 = VALUE1_INITIAL;
#define VALUE2_INITIAL 0xdeadbeef
static __thread unsigned int value2 = VALUE2_INITIAL;
static int cl_called = 0;
static void
cl (void *arg)
{
cl_called++;
xpthread_barrier_wait (&barrier); /* 1 */
}
static void
thread_handler (union sigval sv)
{
/* Check if thread state is correctly reset after a pthread_exit. */
TEST_COMPARE (value1, VALUE1_INITIAL);
TEST_COMPARE (value2, VALUE2_INITIAL);
value1 = VALUE2_INITIAL;
value2 = VALUE1_INITIAL;
xpthread_barrier_wait (&barrier); /* 0 */
pthread_cleanup_push (cl, NULL);
pthread_exit (NULL);
pthread_cleanup_pop (0);
}
static int
do_test (void)
{
struct sigevent sev = {
.sigev_notify = SIGEV_THREAD,
.sigev_notify_function = &thread_handler,
};
timer_t timerid;
TEST_COMPARE (timer_create (CLOCK_REALTIME, &sev, &timerid), 0);
xpthread_barrier_init (&barrier, NULL, 2);
struct itimerspec trigger = { { 0, 1000000 }, { 0, 1000000 } };
TEST_COMPARE (timer_settime (timerid, 0, &trigger, NULL), 0);
enum { TIMERS_TO_CHECK = 4 };
for (int i = 0; i < TIMERS_TO_CHECK; i++)
{
/* Check the thread local values. */
xpthread_barrier_wait (&barrier); /* 0 */
xpthread_barrier_wait (&barrier); /* 1 */
}
TEST_COMPARE (cl_called, TIMERS_TO_CHECK);
return 0;
}
/* A stall in cancellation is a regression. */
#include <support/test-driver.c>
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