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/*
* Copyright (c) 2002, Intel Corporation. All rights reserved.
* This file is licensed under the GPL license. For the full content
* of this license, see the COPYING file at the top level of this
* source tree.
* Test pthread_spin_destroy(pthread_spinlock_t *lock) may fail if:
*
* [EBUSY] The implementation has detected an attempt to
* initialize or destroy a spin lock while it is in use
* (for example, while being used in a pthread_spin_lock()
* call) by another thread.
*
* Note: This test will always pass
*
* Steps:
* 1. Initialize a pthread_spinlock_t object 'spinlock' with
* pthread_spin_init()
* 2. Main thread lock 'spinlock', should get the lock
* 3. Create a child thread. The thread call pthread_spin_destroy()
*/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <string.h>
#include "posixtest.h"
static pthread_spinlock_t spinlock;
static void *fn_chld(void *arg)
{
int rc = 0;
printf("child: destroy spin lock\n");
rc = pthread_spin_destroy(&spinlock);
if (rc == EBUSY) {
printf("child: correctly got EBUSY\n");
printf("Test PASSED\n");
} else {
printf("child: got return code %d, %s\n", rc, strerror(rc));
printf
("Test PASSED: *Note: Did not return EBUSY when destroying a spinlock already in use, but standard says 'may' fail\n");
}
exit(PTS_PASS);
}
int main(void)
{
pthread_t child_thread;
if (pthread_spin_init(&spinlock, PTHREAD_PROCESS_PRIVATE) != 0) {
printf("main: Error at pthread_spin_init()\n");
return PTS_UNRESOLVED;
}
printf("main: attempt spin lock\n");
/* We should get the lock */
if (pthread_spin_lock(&spinlock) != 0) {
printf("main cannot get spin lock when no one owns the lock\n");
return PTS_UNRESOLVED;
}
printf("main: acquired spin lock\n");
printf("main: create thread\n");
if (pthread_create(&child_thread, NULL, fn_chld, NULL) != 0) {
printf("main: Error creating child thread\n");
return PTS_UNRESOLVED;
}
/* Wait for thread to end execution */
pthread_join(child_thread, NULL);
return PTS_PASS;
}
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