mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-08 14:20:07 +00:00
96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
/* Copyright (C) 2002-2024 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 <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
|
|
static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
|
|
static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
|
|
|
|
|
|
static void *
|
|
tf (void *p)
|
|
{
|
|
int err;
|
|
|
|
err = pthread_mutex_lock (&mut);
|
|
if (err != 0)
|
|
error (EXIT_FAILURE, err, "child: cannot get mutex");
|
|
|
|
puts ("child: got mutex; signalling");
|
|
|
|
pthread_cond_signal (&cond);
|
|
|
|
puts ("child: unlock");
|
|
|
|
err = pthread_mutex_unlock (&mut);
|
|
if (err != 0)
|
|
error (EXIT_FAILURE, err, "child: cannot unlock");
|
|
|
|
puts ("child: done");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
pthread_t th;
|
|
int err;
|
|
|
|
printf ("&cond = %p\n&mut = %p\n", &cond, &mut);
|
|
|
|
puts ("parent: get mutex");
|
|
|
|
err = pthread_mutex_lock (&mut);
|
|
if (err != 0)
|
|
error (EXIT_FAILURE, err, "parent: cannot get mutex");
|
|
|
|
puts ("parent: create child");
|
|
|
|
err = pthread_create (&th, NULL, tf, NULL);
|
|
if (err != 0)
|
|
error (EXIT_FAILURE, err, "parent: cannot create thread");
|
|
|
|
puts ("parent: wait for condition");
|
|
|
|
/* This test will fail on spurious wake-ups, which are allowed; however,
|
|
the current implementation shouldn't produce spurious wake-ups in the
|
|
scenario we are testing here. */
|
|
err = pthread_cond_wait (&cond, &mut);
|
|
if (err != 0)
|
|
error (EXIT_FAILURE, err, "parent: cannot wait fir signal");
|
|
|
|
puts ("parent: got signal");
|
|
|
|
err = pthread_join (th, NULL);
|
|
if (err != 0)
|
|
error (EXIT_FAILURE, err, "parent: failed to join");
|
|
|
|
puts ("done");
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../test-skeleton.c"
|