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688903eb | 1 | /* Copyright (C) 2004-2018 Free Software Foundation, Inc. |
73f7c32c UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Jakub Jelinek <jakub@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 | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
73f7c32c UD |
18 | |
19 | #include <pthread.h> | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <unistd.h> | |
24 | ||
25 | #define N 10 | |
26 | #define ROUNDS 1000 | |
27 | static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; | |
28 | static pthread_cond_t cond2 = PTHREAD_COND_INITIALIZER; | |
29 | static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER; | |
30 | static pthread_barrier_t b; | |
31 | static int count; | |
32 | ||
33 | static void * | |
34 | tf (void *p) | |
35 | { | |
36 | int i; | |
37 | for (i = 0; i < ROUNDS; ++i) | |
38 | { | |
39 | pthread_mutex_lock (&mut); | |
40 | ||
41 | if (++count == N) | |
42 | pthread_cond_signal (&cond2); | |
43 | ||
44 | #ifdef TIMED | |
45 | struct timeval tv; | |
46 | gettimeofday (&tv, NULL); | |
47 | struct timespec ts; | |
f76c8499 | 48 | /* Wait three seconds. */ |
73f7c32c UD |
49 | ts.tv_sec = tv.tv_sec + 3; |
50 | ts.tv_nsec = tv.tv_usec * 1000; | |
51 | pthread_cond_timedwait (&cond, &mut, &ts); | |
52 | #else | |
53 | pthread_cond_wait (&cond, &mut); | |
54 | #endif | |
55 | ||
56 | pthread_mutex_unlock (&mut); | |
57 | ||
58 | int err = pthread_barrier_wait (&b); | |
59 | if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) | |
60 | { | |
61 | puts ("child: barrier_wait failed"); | |
62 | exit (1); | |
63 | } | |
64 | ||
65 | err = pthread_barrier_wait (&b); | |
66 | if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) | |
67 | { | |
68 | puts ("child: barrier_wait failed"); | |
69 | exit (1); | |
70 | } | |
71 | } | |
72 | ||
73 | return NULL; | |
74 | } | |
75 | ||
76 | ||
77 | static int | |
78 | do_test (void) | |
79 | { | |
80 | if (pthread_barrier_init (&b, NULL, N + 1) != 0) | |
81 | { | |
82 | puts ("barrier_init failed"); | |
83 | return 1; | |
84 | } | |
85 | ||
86 | pthread_mutex_lock (&mut); | |
87 | ||
88 | int i, j, err; | |
89 | pthread_t th[N]; | |
90 | for (i = 0; i < N; ++i) | |
91 | if ((err = pthread_create (&th[i], NULL, tf, NULL)) != 0) | |
92 | { | |
93 | printf ("cannot create thread %d: %s\n", i, strerror (err)); | |
94 | return 1; | |
95 | } | |
96 | ||
97 | for (i = 0; i < ROUNDS; ++i) | |
98 | { | |
ed19993b TR |
99 | /* Make sure we discard spurious wake-ups. */ |
100 | do | |
101 | pthread_cond_wait (&cond2, &mut); | |
102 | while (count != N); | |
73f7c32c UD |
103 | |
104 | if (i & 1) | |
105 | pthread_mutex_unlock (&mut); | |
106 | ||
107 | if (i & 2) | |
108 | pthread_cond_broadcast (&cond); | |
109 | else if (i & 4) | |
110 | for (j = 0; j < N; ++j) | |
111 | pthread_cond_signal (&cond); | |
112 | else | |
113 | { | |
114 | for (j = 0; j < (i / 8) % N; ++j) | |
115 | pthread_cond_signal (&cond); | |
116 | pthread_cond_broadcast (&cond); | |
117 | } | |
118 | ||
119 | if ((i & 1) == 0) | |
120 | pthread_mutex_unlock (&mut); | |
121 | ||
122 | err = pthread_cond_destroy (&cond); | |
123 | if (err) | |
124 | { | |
125 | printf ("pthread_cond_destroy failed: %s\n", strerror (err)); | |
126 | return 1; | |
127 | } | |
128 | ||
129 | /* Now clobber the cond variable which has been successfully | |
130 | destroyed above. */ | |
131 | memset (&cond, (char) i, sizeof (cond)); | |
132 | ||
133 | err = pthread_barrier_wait (&b); | |
134 | if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) | |
135 | { | |
136 | puts ("parent: barrier_wait failed"); | |
137 | return 1; | |
138 | } | |
139 | ||
140 | pthread_mutex_lock (&mut); | |
141 | ||
142 | err = pthread_barrier_wait (&b); | |
143 | if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) | |
144 | { | |
145 | puts ("parent: barrier_wait failed"); | |
146 | return 1; | |
147 | } | |
148 | ||
149 | count = 0; | |
150 | err = pthread_cond_init (&cond, NULL); | |
151 | if (err) | |
152 | { | |
153 | printf ("pthread_cond_init failed: %s\n", strerror (err)); | |
154 | return 1; | |
155 | } | |
156 | } | |
157 | ||
158 | for (i = 0; i < N; ++i) | |
159 | if ((err = pthread_join (th[i], NULL)) != 0) | |
160 | { | |
161 | printf ("failed to join thread %d: %s\n", i, strerror (err)); | |
162 | return 1; | |
163 | } | |
164 | ||
165 | puts ("done"); | |
166 | ||
167 | return 0; | |
168 | } | |
169 | ||
170 | ||
171 | #define TEST_FUNCTION do_test () | |
172 | #include "../test-skeleton.c" |