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/* Copyright (C) 2003-2021 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 <errno.h>
#include <pthread.h>
#include <semaphore.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static int do_test (void);
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
static pthread_t receiver;
static sem_t sem;
static pthread_barrier_t b;
static void
handler (int sig)
{
if (sig != SIGUSR1)
{
write_message ("wrong signal\n");
_exit (1);
}
if (pthread_self () != receiver)
{
write_message ("not the intended receiver\n");
_exit (1);
}
if (sem_post (&sem) != 0)
{
write_message ("sem_post failed\n");
_exit (1);
}
}
static void *
tf (void *a)
{
int e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("child: barrier_wait failed");
exit (1);
}
return NULL;
}
int
do_test (void)
{
struct sigaction sa;
sigemptyset (&sa.sa_mask);
sa.sa_flags = 0;
sa.sa_handler = handler;
if (sigaction (SIGUSR1, &sa, NULL) != 0)
{
puts ("sigaction failed");
exit (1);
}
#define N 20
if (pthread_barrier_init (&b, NULL, N + 1) != 0)
{
puts ("barrier_init failed");
exit (1);
}
pthread_attr_t a;
if (pthread_attr_init (&a) != 0)
{
puts ("attr_init failed");
exit (1);
}
if (pthread_attr_setstacksize (&a, 1 * 1024 * 1024) != 0)
{
puts ("attr_setstacksize failed");
return 1;
}
pthread_t th[N];
int i;
for (i = 0; i < N; ++i)
if (pthread_create (&th[i], &a, tf, NULL) != 0)
{
puts ("create failed");
exit (1);
}
if (pthread_attr_destroy (&a) != 0)
{
puts ("attr_destroy failed");
exit (1);
}
if (sem_init (&sem, 0, 0) != 0)
{
puts ("sem_init failed");
exit (1);
}
for (i = 0; i < N * 10; ++i)
{
receiver = th[i % N];
if (pthread_kill (receiver, SIGUSR1) != 0)
{
puts ("kill failed");
exit (1);
}
if (TEMP_FAILURE_RETRY (sem_wait (&sem)) != 0)
{
puts ("sem_wait failed");
exit (1);
}
}
int e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("barrier_wait failed");
exit (1);
}
for (i = 0; i < N; ++i)
if (pthread_join (th[i], NULL) != 0)
{
puts ("join failed");
exit (1);
}
return 0;
}
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