testcases/open_posix_testsuite/conformance/interfaces/pthread_mutexattr_settype/3-1.c

/*
 * Copyright (c) 2002, Intel Corporation. All rights reserved.
 * Created by:  bing.wei.liu REMOVE-THIS AT intel DOT com
 * 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_mutexattr_settype()
 *
 * PTHREAD_MUTEX_ERRORCHECK

 * Provides errorchecking.  A thread attempting to relock this mutex without unlocking it
 * first will return with an error.  A thread attempting to unlock a mutex which another
 * thread has locked will return with an error.  A thread attempting to unlock an unlocked
 * mutex will return with an error.
 *
 * Steps:
 * 1.  Initialize a pthread_mutexattr_t object with pthread_mutexattr_init()
 * 2   Set the 'type' of the mutexattr object to PTHREAD_MUTEX_ERRORCHECK.
 * 3.  Create a mutex with that mutexattr object.
 * 4.  Attempt to relock a mutex without unlocking it first.  It should return an error.
 *
 */

#define _XOPEN_SOURCE 600

#include <pthread.h>
#include <stdio.h>
#include <errno.h>
#include "posixtest.h"

int main(void)
{
	pthread_mutex_t mutex;
	pthread_mutexattr_t mta;

	/* Initialize a mutex attributes object */
	if (pthread_mutexattr_init(&mta) != 0) {
		perror("Error at pthread_mutexattr_init()\n");
		return PTS_UNRESOLVED;
	}

	/* Set the 'type' attribute to be PTHREAD_MUTEX_ERRORCHECK  */
	if (pthread_mutexattr_settype(&mta, PTHREAD_MUTEX_ERRORCHECK) != 0) {
		printf("Test FAILED: Error setting the attribute 'type'\n");
		return PTS_FAIL;
	}

	/* Initialize the mutex with that attribute obj. */
	if (pthread_mutex_init(&mutex, &mta) != 0) {
		perror("Error intializing the mutex.\n");
		return PTS_UNRESOLVED;
	}

	/* Lock the mutex. */
	if (pthread_mutex_lock(&mutex) != 0) {
		perror("Error locking the mutex first time around.\n");
		return PTS_UNRESOLVED;
	}

	/* Lock the mutex again.  Here, an error should be returned. */
	if (pthread_mutex_lock(&mutex) == 0) {
		perror
		    ("Test FAILED: Did not return error when locking an already locked mutex.\n");
		return PTS_FAIL;
	}

	/* cleanup */
	pthread_mutex_unlock(&mutex);
	pthread_mutex_destroy(&mutex);

	if (pthread_mutexattr_destroy(&mta) != 0) {
		perror("Error at pthread_mutex_destroy()\n");
		return PTS_UNRESOLVED;
	}

	printf("Test PASSED\n");
	return PTS_PASS;
}