86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/*-
|
|
* Copyright (c) 2006, David Xu <davidxu@freebsd.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice unmodified, this list of conditions, and the following
|
|
* disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
*/
|
|
#include <pthread.h>
|
|
#include <stdio.h>
|
|
|
|
#define NLOOPS 10
|
|
|
|
pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
|
|
pthread_cond_t cv = PTHREAD_COND_INITIALIZER;
|
|
|
|
int wake;
|
|
int stop;
|
|
|
|
void *
|
|
thr_routine(void *arg)
|
|
{
|
|
pthread_mutex_lock(&m);
|
|
while (wake == 0)
|
|
pthread_cond_wait(&cv, &m);
|
|
pthread_mutex_unlock(&m);
|
|
|
|
while (stop == 0)
|
|
pthread_yield();
|
|
return (NULL);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
pthread_t td;
|
|
int i;
|
|
void *result;
|
|
|
|
pthread_setconcurrency(1);
|
|
for (i = 0; i < NLOOPS; ++i) {
|
|
stop = 0;
|
|
wake = 0;
|
|
|
|
pthread_create(&td, NULL, thr_routine, NULL);
|
|
sleep(1);
|
|
printf("trying: %d\n", i);
|
|
pthread_mutex_lock(&m);
|
|
wake = 1;
|
|
pthread_cond_signal(&cv);
|
|
pthread_cancel(td);
|
|
pthread_mutex_unlock(&m);
|
|
stop = 1;
|
|
result = NULL;
|
|
pthread_join(td, &result);
|
|
if (result == PTHREAD_CANCELED) {
|
|
printf("the condition variable implementation does not\n"
|
|
"conform to SUSv3, a thread unblocked from\n"
|
|
"condition variable still can be canceled.\n");
|
|
return (1);
|
|
}
|
|
}
|
|
|
|
printf("OK\n");
|
|
return (0);
|
|
}
|