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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 <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
static pthread_once_t once = PTHREAD_ONCE_INIT;
static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
static pthread_barrier_t bar;
static int global;
static int cl_called;
static void
once_handler1 (void)
{
if (pthread_mutex_lock (&mut) != 0)
{
puts ("once_handler1: mutex_lock failed");
exit (1);
}
int r = pthread_barrier_wait (&bar);
if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("once_handler1: barrier_wait failed");
exit (1);
}
pthread_cond_wait (&cond, &mut);
/* We should never get here. */
}
static void
once_handler2 (void)
{
global = 1;
}
static void
cl (void *arg)
{
++cl_called;
}
static void *
tf1 (void *arg)
{
pthread_cleanup_push (cl, NULL);
pthread_once (&once, once_handler1);
pthread_cleanup_pop (0);
/* We should never get here. */
puts ("pthread_once in tf returned");
exit (1);
}
static void *
tf2 (void *arg)
{
pthread_cleanup_push (cl, NULL);
int r = pthread_barrier_wait (&bar);
if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("once_handler2: barrier_wait failed");
exit (1);
}
pthread_cleanup_pop (0);
pthread_once (&once, once_handler2);
return NULL;
}
static int
do_test (void)
{
pthread_t th[2];
if (pthread_barrier_init (&bar, NULL, 2) != 0)
{
puts ("barrier_init failed");
return 1;
}
if (pthread_create (&th[0], NULL, tf1, NULL) != 0)
{
puts ("first create failed");
return 1;
}
int r = pthread_barrier_wait (&bar);
if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("first barrier_wait failed");
return 1;
}
if (pthread_mutex_lock (&mut) != 0)
{
puts ("mutex_lock failed");
return 1;
}
/* We unlock the mutex so that we catch the case where the pthread_cond_wait
call incorrectly resumes and tries to get the mutex. */
if (pthread_mutex_unlock (&mut) != 0)
{
puts ("mutex_unlock failed");
return 1;
}
if (pthread_create (&th[1], NULL, tf2, NULL) != 0)
{
puts ("second create failed");
return 1;
}
r = pthread_barrier_wait (&bar);
if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("second barrier_wait failed");
return 1;
}
/* Give the second thread a chance to reach the pthread_once call. */
sleep (2);
/* Cancel the thread. */
if (pthread_cancel (th[0]) != 0)
{
puts ("cancel failed");
return 1;
}
void *result;
pthread_join (th[0], &result);
if (result != PTHREAD_CANCELED)
{
puts ("first join didn't return PTHREAD_CANCELED");
return 1;
}
puts ("joined first thread");
pthread_join (th[1], &result);
if (result != NULL)
{
puts ("second join didn't return PTHREAD_CANCELED");
return 1;
}
if (global != 1)
{
puts ("global still 0");
return 1;
}
if (cl_called != 1)
{
printf ("cl_called = %d\n", cl_called);
return 1;
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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