3-3.c revision c911fa64e3ec4bb25012a36ebdd2ad8f747d9ea8 
1/*
2 * Copyright (c) 2002, Intel Corporation. All rights reserved.
3 * Created by:  bing.wei.liu REMOVE-THIS AT intel DOT com
4 * This file is licensed under the GPL license.  For the full content
5 * of this license, see the COPYING file at the top level of this
6 * source tree.
7
8 * Test pthread_mutexattr_settype()
9 *
10  PTHREAD_MUTEX_ERRORCHECK
11
12  Provides errorchecking.  A thread attempting to relock this mutex without unlocking it
13  first will return with an error.  A thread attempting to unlock a mutex which another
14  thread has locked will return with an error.  A thread attempting to unlock an unlocked
15  mutex will return with an error.
16 *
17 * Steps:
18 * 1.  Initialize a pthread_mutexattr_t object with pthread_mutexattr_init()
19 * 2   Set the 'type' of the mutexattr object to PTHREAD_MUTEX_ERRORCHECK.
20 * 3.  Create a mutex with that mutexattr object.
21 * 4.  Attempt to unlock it without locking it first.  It should return an error.
22 *
23 */
24
25#define _XOPEN_SOURCE 600
26
27#include <pthread.h>
28#include <stdio.h>
29#include <errno.h>
30#include "posixtest.h"
31
32int main()
33{
34	pthread_mutex_t mutex;
35	pthread_mutexattr_t mta;
36
37	/* Initialize a mutex attributes object */
38	if(pthread_mutexattr_init(&mta) != 0)
39	{
40		perror("Error at pthread_mutexattr_init()\n");
41		return PTS_UNRESOLVED;
42	}
43
44	 /* Set the 'type' attribute to be PTHREAD_MUTEX_ERRORCHECK  */
45	if(pthread_mutexattr_settype(&mta, PTHREAD_MUTEX_ERRORCHECK) != 0)
46	{
47		printf("Test FAILED: Error setting the attribute 'type'\n");
48		return PTS_FAIL;
49	}
50
51	/* Initialize the mutex with that attribute obj. */
52	if(pthread_mutex_init(&mutex, &mta) != 0)
53	{
54		perror("Error intializing the mutex.\n");
55		return PTS_UNRESOLVED;
56	}
57
58	/* Unlock an already unlocked mutex.  Here, an error should be returned. */
59	if(pthread_mutex_unlock(&mutex) == 0 )
60	{
61		perror("Test FAILED: Did not return error when unlocking an already unlocked mutex.\n");
62		return PTS_FAIL;
63	}
64
65	printf("Test PASSED\n");
66	return PTS_PASS;
67}
68