1 | /* Copyright (C) 2003-2024 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <error.h> |
19 | #include <pthread.h> |
20 | #include <stdbool.h> |
21 | #include <stdio.h> |
22 | #include <stdlib.h> |
23 | |
24 | |
25 | #define N 10 |
26 | #define ROUNDS 100 |
27 | |
28 | static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; |
29 | static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER; |
30 | static pthread_barrier_t bN1; |
31 | static pthread_barrier_t b2; |
32 | |
33 | |
34 | static void * |
35 | tf (void *p) |
36 | { |
37 | if (pthread_mutex_lock (mutex: &mut) != 0) |
38 | { |
39 | puts (s: "child: 1st mutex_lock failed" ); |
40 | exit (1); |
41 | } |
42 | |
43 | int e = pthread_barrier_wait (barrier: &b2); |
44 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) |
45 | { |
46 | puts (s: "child: 1st barrier_wait failed" ); |
47 | exit (1); |
48 | } |
49 | |
50 | if (pthread_cond_wait (cond: &cond, mutex: &mut) != 0) |
51 | { |
52 | puts (s: "child: cond_wait failed" ); |
53 | exit (1); |
54 | } |
55 | |
56 | if (pthread_mutex_unlock (mutex: &mut) != 0) |
57 | { |
58 | puts (s: "child: mutex_unlock failed" ); |
59 | exit (1); |
60 | } |
61 | |
62 | e = pthread_barrier_wait (barrier: &bN1); |
63 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) |
64 | { |
65 | puts (s: "child: 2nd barrier_wait failed" ); |
66 | exit (1); |
67 | } |
68 | |
69 | return NULL; |
70 | } |
71 | |
72 | |
73 | static int |
74 | do_test (void) |
75 | { |
76 | if (pthread_barrier_init (barrier: &bN1, NULL, N + 1) != 0) |
77 | { |
78 | puts (s: "barrier_init failed" ); |
79 | exit (1); |
80 | } |
81 | |
82 | if (pthread_barrier_init (barrier: &b2, NULL, count: 2) != 0) |
83 | { |
84 | puts (s: "barrier_init failed" ); |
85 | exit (1); |
86 | } |
87 | |
88 | pthread_attr_t at; |
89 | |
90 | if (pthread_attr_init (attr: &at) != 0) |
91 | { |
92 | puts (s: "attr_init failed" ); |
93 | return 1; |
94 | } |
95 | |
96 | if (pthread_attr_setstacksize (attr: &at, stacksize: 1 * 1024 * 1024) != 0) |
97 | { |
98 | puts (s: "attr_setstacksize failed" ); |
99 | return 1; |
100 | } |
101 | |
102 | int r; |
103 | for (r = 0; r < ROUNDS; ++r) |
104 | { |
105 | printf (format: "round %d\n" , r + 1); |
106 | |
107 | int i; |
108 | pthread_t th[N]; |
109 | for (i = 0; i < N; ++i) |
110 | { |
111 | if (pthread_create (newthread: &th[i], attr: &at, start_routine: tf, NULL) != 0) |
112 | { |
113 | puts (s: "create failed" ); |
114 | exit (1); |
115 | } |
116 | |
117 | int e = pthread_barrier_wait (barrier: &b2); |
118 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) |
119 | { |
120 | puts (s: "parent: 1st barrier_wait failed" ); |
121 | exit (1); |
122 | } |
123 | } |
124 | |
125 | if (pthread_mutex_lock (mutex: &mut) != 0) |
126 | { |
127 | puts (s: "parent: mutex_lock failed" ); |
128 | exit (1); |
129 | } |
130 | if (pthread_mutex_unlock (mutex: &mut) != 0) |
131 | { |
132 | puts (s: "parent: mutex_unlock failed" ); |
133 | exit (1); |
134 | } |
135 | |
136 | /* N single signal calls. Without locking. This tests that no |
137 | signal gets lost. */ |
138 | for (i = 0; i < N; ++i) |
139 | if (pthread_cond_signal (cond: &cond) != 0) |
140 | { |
141 | puts (s: "cond_signal failed" ); |
142 | exit (1); |
143 | } |
144 | |
145 | int e = pthread_barrier_wait (barrier: &bN1); |
146 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) |
147 | { |
148 | puts (s: "parent: 2nd barrier_wait failed" ); |
149 | exit (1); |
150 | } |
151 | |
152 | for (i = 0; i < N; ++i) |
153 | if (pthread_join (th: th[i], NULL) != 0) |
154 | { |
155 | puts (s: "join failed" ); |
156 | exit (1); |
157 | } |
158 | } |
159 | |
160 | if (pthread_attr_destroy (attr: &at) != 0) |
161 | { |
162 | puts (s: "attr_destroy failed" ); |
163 | return 1; |
164 | } |
165 | |
166 | return 0; |
167 | } |
168 | |
169 | |
170 | #define TEST_FUNCTION do_test () |
171 | #include "../test-skeleton.c" |
172 | |