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glibc/nptl/tst-once4.c
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/* Copyright (C) 2003-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. | |
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 | |
<http://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 () | |
#define TIMEOUT 4 | |
#include "../test-skeleton.c" |