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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 <error.h>
#include <pthread.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#define N 10
#define ROUNDS 100
static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
static pthread_barrier_t bN1;
static pthread_barrier_t b2;
static void *
tf (void *p)
{
if (pthread_mutex_lock (&mut) != 0)
{
puts ("child: 1st mutex_lock failed");
exit (1);
}
int e = pthread_barrier_wait (&b2);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("child: 1st barrier_wait failed");
exit (1);
}
if (pthread_cond_wait (&cond, &mut) != 0)
{
puts ("child: cond_wait failed");
exit (1);
}
if (pthread_mutex_unlock (&mut) != 0)
{
puts ("child: mutex_unlock failed");
exit (1);
}
e = pthread_barrier_wait (&bN1);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("child: 2nd barrier_wait failed");
exit (1);
}
return NULL;
}
static int
do_test (void)
{
if (pthread_barrier_init (&bN1, NULL, N + 1) != 0)
{
puts ("barrier_init failed");
exit (1);
}
if (pthread_barrier_init (&b2, NULL, 2) != 0)
{
puts ("barrier_init failed");
exit (1);
}
pthread_attr_t at;
if (pthread_attr_init (&at) != 0)
{
puts ("attr_init failed");
return 1;
}
if (pthread_attr_setstacksize (&at, 1 * 1024 * 1024) != 0)
{
puts ("attr_setstacksize failed");
return 1;
}
int r;
for (r = 0; r < ROUNDS; ++r)
{
printf ("round %d\n", r + 1);
int i;
pthread_t th[N];
for (i = 0; i < N; ++i)
{
if (pthread_create (&th[i], &at, tf, NULL) != 0)
{
puts ("create failed");
exit (1);
}
int e = pthread_barrier_wait (&b2);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("parent: 1st barrier_wait failed");
exit (1);
}
}
if (pthread_mutex_lock (&mut) != 0)
{
puts ("parent: mutex_lock failed");
exit (1);
}
if (pthread_mutex_unlock (&mut) != 0)
{
puts ("parent: mutex_unlock failed");
exit (1);
}
/* N single signal calls. Without locking. This tests that no
signal gets lost. */
for (i = 0; i < N; ++i)
if (pthread_cond_signal (&cond) != 0)
{
puts ("cond_signal failed");
exit (1);
}
int e = pthread_barrier_wait (&bN1);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("parent: 2nd barrier_wait failed");
exit (1);
}
for (i = 0; i < N; ++i)
if (pthread_join (th[i], NULL) != 0)
{
puts ("join failed");
exit (1);
}
}
if (pthread_attr_destroy (&at) != 0)
{
puts ("attr_destroy failed");
return 1;
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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