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1 | /* Copyright (C) 2004 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. | |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2004. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library 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 the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
19 | ||
20 | #include <errno.h> | |
21 | #include <pthread.h> | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <unistd.h> | |
26 | #include <sys/time.h> | |
27 | ||
28 | ||
29 | static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; | |
30 | static pthread_mutex_t mut = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; | |
31 | static pthread_mutex_t mut2 = PTHREAD_MUTEX_INITIALIZER; | |
32 | ||
33 | static void * | |
34 | tf (void *p) | |
35 | { | |
36 | if (pthread_mutex_lock (&mut) != 0) | |
37 | { | |
38 | printf ("%s: 1st mutex_lock failed\n", __func__); | |
39 | exit (1); | |
40 | } | |
41 | if (pthread_mutex_lock (&mut) != 0) | |
42 | { | |
43 | printf ("%s: 2nd mutex_lock failed\n", __func__); | |
44 | exit (1); | |
45 | } | |
46 | if (pthread_mutex_lock (&mut) != 0) | |
47 | { | |
48 | printf ("%s: 3rd mutex_lock failed\n", __func__); | |
49 | exit (1); | |
50 | } | |
51 | ||
52 | if (pthread_mutex_unlock (&mut2) != 0) | |
53 | { | |
54 | printf ("%s: mutex_unlock failed\n", __func__); | |
55 | exit (1); | |
56 | } | |
57 | ||
58 | struct timeval tv; | |
59 | gettimeofday (&tv, NULL); | |
60 | struct timespec ts; | |
61 | TIMEVAL_TO_TIMESPEC (&tv, &ts); | |
62 | ts.tv_sec += p == NULL ? 100 : 1; | |
63 | ||
64 | int err = pthread_cond_timedwait (&cond, &mut, &ts); | |
65 | if ((err != 0 && p == NULL) || (err != ETIMEDOUT && p != NULL)) | |
66 | { | |
67 | printf ("%s: cond_wait failed\n", __func__); | |
68 | exit (1); | |
69 | } | |
70 | ||
71 | if (pthread_mutex_unlock (&mut) != 0) | |
72 | { | |
73 | printf ("%s: 1st mutex_unlock failed\n", __func__); | |
74 | exit (1); | |
75 | } | |
76 | if (pthread_mutex_unlock (&mut) != 0) | |
77 | { | |
78 | printf ("%s: 2nd mutex_unlock failed\n", __func__); | |
79 | exit (1); | |
80 | } | |
81 | if (pthread_mutex_unlock (&mut) != 0) | |
82 | { | |
83 | printf ("%s: 3rd mutex_unlock failed\n", __func__); | |
84 | exit (1); | |
85 | } | |
86 | ||
87 | puts ("child: done"); | |
88 | ||
89 | return NULL; | |
90 | } | |
91 | ||
92 | ||
93 | static int | |
94 | do_test (void) | |
95 | { | |
96 | if (pthread_mutex_lock (&mut2) != 0) | |
97 | { | |
98 | puts ("1st mutex_lock failed"); | |
99 | return 1; | |
100 | } | |
101 | ||
102 | puts ("parent: create 1st child"); | |
103 | ||
104 | pthread_t th; | |
105 | int err = pthread_create (&th, NULL, tf, NULL); | |
106 | if (err != 0) | |
107 | { | |
108 | printf ("parent: cannot 1st create thread: %s\n", strerror (err)); | |
109 | return 1; | |
110 | } | |
111 | ||
112 | /* We have to synchronize with the child. */ | |
113 | if (pthread_mutex_lock (&mut2) != 0) | |
114 | { | |
115 | puts ("2nd mutex_lock failed"); | |
116 | return 1; | |
117 | } | |
118 | ||
119 | /* Give the child to reach to pthread_cond_wait. */ | |
120 | sleep (1); | |
121 | ||
122 | if (pthread_cond_signal (&cond) != 0) | |
123 | { | |
124 | puts ("cond_signal failed"); | |
125 | return 1; | |
126 | } | |
127 | ||
128 | err = pthread_join (th, NULL); | |
129 | if (err != 0) | |
130 | { | |
131 | printf ("parent: failed to join: %s\n", strerror (err)); | |
132 | return 1; | |
133 | } | |
134 | ||
135 | ||
136 | puts ("parent: create 2nd child"); | |
137 | ||
138 | err = pthread_create (&th, NULL, tf, (void *) 1l); | |
139 | if (err != 0) | |
140 | { | |
141 | printf ("parent: cannot 2nd create thread: %s\n", strerror (err)); | |
142 | return 1; | |
143 | } | |
144 | ||
145 | err = pthread_join (th, NULL); | |
146 | if (err != 0) | |
147 | { | |
148 | printf ("parent: failed to join: %s\n", strerror (err)); | |
149 | return 1; | |
150 | } | |
151 | ||
152 | puts ("done"); | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
157 | ||
158 | #define TEST_FUNCTION do_test () | |
159 | #define TIMEOUT 6 | |
160 | #include "../test-skeleton.c" |