3-1.c revision 1b8a2eaac9978e1f9a829e5e38dc39c892c77c75 
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 relock a mutex without unlocking 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	/* Lock the mutex. */
59	if(pthread_mutex_lock(&mutex) != 0 )
60	{
61		perror("Error locking the mutex first time around.\n");
62		return PTS_UNRESOLVED;
63	}
64
65	/* Lock the mutex again.  Here, an error should be returned. */
66	if(pthread_mutex_lock(&mutex) == 0 )
67	{
68		perror("Test FAILED: Did not return error when locking an already locked mutex.\n");
69		return PTS_FAIL;
70	}
71
72	/* cleanup */
73	pthread_mutex_unlock(&mutex);
74	pthread_mutex_destroy(&mutex);
75
76	if(pthread_mutexattr_destroy(&mta) != 0)
77	{
78		perror("Error at pthread_mutex_destroy()\n");
79		return PTS_UNRESOLVED;
80	}
81
82	printf("Test PASSED\n");
83	return PTS_PASS;
84}
85