1/******************************************************************************
2 *
3 *   Copyright © International Business Machines  Corp., 2008
4 *
5 *   This program is free software;  you can redistribute it and/or modify
6 *   it under the terms of the GNU General Public License as published by
7 *   the Free Software Foundation; either version 2 of the License, or
8 *   (at your option) any later version.
9 *
10 *   This program is distributed in the hope that it will be useful,
11 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
12 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
13 *   the GNU General Public License for more details.
14 *
15 *   You should have received a copy of the GNU General Public License
16 *   along with this program;  if not, write to the Free Software
17 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 *
19 * NAME
20 *      testpi-5.c
21 *
22 * DESCRIPTION
23 *      This testcase verifies if a thread can lock the priority inheritance
24 *      mutex multiple times.
25 *
26 * USAGE:
27 *      Use run_auto.sh script in current directory to build and run test.
28 *
29 * AUTHOR
30 *
31 *
32 * HISTORY
33 *      2010-04-22 Code cleanup by Gowrishankar
34 *
35 *
36 *****************************************************************************/
37
38#include <stdio.h>
39#include <pthread.h>
40#include <string.h>
41#include <unistd.h>
42#include <librttest.h>
43pthread_mutex_t child_mutex;
44
45void *child_thread(void *arg)
46{
47	int ret;
48
49	ret = pthread_mutex_lock(&child_mutex);
50	if (ret != 0)
51		printf("child thread: Failed to lock child_mutex: %d\n", ret);
52	else
53		printf("child_thread: got lock\n");
54
55	sleep(2);
56
57	printf("child_thread: Trying to get lock 2nd time\n");
58	ret = pthread_mutex_lock(&child_mutex);
59	if (ret != 0)
60		printf("child thread: Failed to lock child_mutex: %d\n", ret);
61	else
62		printf("child_thread: got lock 2nd time !!\n");
63
64	return NULL;
65}
66
67int do_test(int argc, char **argv)
68{
69	pthread_mutexattr_t mutexattr;
70	int retc, protocol;
71
72#if HAS_PRIORITY_INHERIT
73
74	if (pthread_mutexattr_init(&mutexattr) != 0)
75		printf("Failed to init mutexattr\n");
76
77	if (pthread_mutexattr_setprotocol(&mutexattr,
78					  PTHREAD_PRIO_INHERIT) != 0)
79		printf("Can't set protocol prio inherit\n");
80
81	if (pthread_mutexattr_getprotocol(&mutexattr, &protocol) != 0)
82		printf("Can't get mutexattr protocol\n");
83	else
84		printf("protocol in mutexattr is %d\n", protocol);
85
86	retc = pthread_mutex_init(&child_mutex, &mutexattr);
87	if (retc != 0)
88		printf("Failed to init mutex: %d\n", retc);
89
90	create_other_thread(child_thread, NULL);
91	join_threads();
92
93	return 0;
94#else
95	return 1;
96#endif
97}
98
99#include "test-skeleton.c"
100