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>
43 pthread_mutex_t child_mutex;
44
child_thread(void * arg)45 void *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
do_test(int argc,char ** argv)67 int 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