mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
2a8a8a8461
2003-02-10 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/i386/pthread_once.S (clear_once_control): Fix clearing of control variable. * Makefile (tests): Add tst-once3. * tst-once3.c: New file.
142 lines
3.0 KiB
C
142 lines
3.0 KiB
C
/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
|
|
|
|
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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <pthread.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
|
|
|
|
#define N 100
|
|
|
|
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 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 *
|
|
tf (void *arg)
|
|
{
|
|
pthread_once (&once, once_handler1);
|
|
|
|
/* We should never get here. */
|
|
puts ("pthread_once in tf returned");
|
|
exit (1);
|
|
}
|
|
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
pthread_t th;
|
|
|
|
if (pthread_barrier_init (&bar, NULL, 2) != 0)
|
|
{
|
|
puts ("barrier_init failed");
|
|
exit (1);
|
|
}
|
|
|
|
if (pthread_create (&th, NULL, tf, NULL) != 0)
|
|
{
|
|
puts ("first create failed");
|
|
exit (1);
|
|
}
|
|
|
|
int r = pthread_barrier_wait (&bar);
|
|
if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD)
|
|
{
|
|
puts ("barrier_wait failed");
|
|
exit (1);
|
|
}
|
|
|
|
if (pthread_mutex_lock (&mut) != 0)
|
|
{
|
|
puts ("mutex_lock failed");
|
|
exit (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");
|
|
exit (1);
|
|
}
|
|
|
|
/* Cancel the thread. */
|
|
if (pthread_cancel (th) != 0)
|
|
{
|
|
puts ("cancel failed");
|
|
exit (1);
|
|
}
|
|
|
|
void *result;
|
|
pthread_join (th, &result);
|
|
if (result != PTHREAD_CANCELED)
|
|
{
|
|
puts ("join didn't return PTHREAD_CANCELED");
|
|
exit (1);
|
|
}
|
|
|
|
pthread_once (&once, once_handler2);
|
|
|
|
if (global != 1)
|
|
{
|
|
puts ("global still 0");
|
|
exit (1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define TEST_FUNCTION do_test ()
|
|
#define TIMEOUT 4
|
|
#include "../test-skeleton.c"
|