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1/* Test sem_timedwait cancellation for contended case.
2 Copyright (C) 2003-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
19
20#include <errno.h>
21#include <pthread.h>
22#include <semaphore.h>
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <unistd.h>
27#include <sys/time.h>
28
29
30static pthread_barrier_t bar;
31static sem_t sem;
32
33
34static void
35cleanup (void *arg)
36{
37 static int ncall;
38
39 if (++ncall != 1)
40 {
41 puts ("second call to cleanup");
42 exit (1);
43 }
44}
45
46
47static void *
48tf (void *arg)
49{
50 int e;
51
52 pthread_cleanup_push (cleanup, NULL);
53
54 e = pthread_barrier_wait (&bar);
55 if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
56 {
57 puts ("error: tf: 1st barrier_wait failed");
58 exit (1);
59 }
60
61 struct timeval tv;
62 (void) gettimeofday (&tv, NULL);
63
64 struct timespec ts;
65 TIMEVAL_TO_TIMESPEC (&tv, &ts);
66
67 /* Timeout in 5 seconds. */
68 ts.tv_sec += 5;
69
70 /* This call should block and be cancelable. */
71 errno = 0;
72 e = sem_timedwait (&sem, &ts);
73
74 pthread_cleanup_pop (0);
75
76 return NULL;
77}
78
79
80static int
81do_test (void)
82{
83 pthread_t th;
84
85 if (pthread_barrier_init (&bar, NULL, 2) != 0)
86 {
87 puts ("error: barrier_init failed");
88 exit (1);
89 }
90
91 if (sem_init (&sem, 0, 0) != 0)
92 {
93 puts ("error: sem_init failed");
94 exit (1);
95 }
96
97 if (pthread_create (&th, NULL, tf, NULL) != 0)
98 {
99 puts ("error: create failed");
100 exit (1);
101 }
102
103 int e = pthread_barrier_wait (&bar);
104 if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
105 {
106 puts ("error: 1st barrier_wait failed");
107 exit (1);
108 }
109
110 /* Give the child a chance to go to sleep in sem_wait. */
111 sleep (1);
112
113 /* Check whether cancellation is honored when waiting in sem_timedwait. */
114 if (pthread_cancel (th) != 0)
115 {
116 puts ("error: 1st cancel failed");
117 exit (1);
118 }
119
120 void *r;
121 if (pthread_join (th, &r) != 0)
122 {
123 puts ("error: join failed");
124 exit (1);
125 }
126
127 if (r != PTHREAD_CANCELED)
128 {
129 puts ("error: thread not canceled");
130 exit (1);
131 }
132
133 return 0;
134}
135
136
137#define TEST_FUNCTION do_test ()
138#include "../test-skeleton.c"
139

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