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1/* Test sem_timedwait cancellation for uncontended 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 pthread_cleanup_push (cleanup, NULL);
51
52 int e = pthread_barrier_wait (&bar);
53 if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
54 {
55 puts ("error: tf: 1st barrier_wait failed");
56 exit (1);
57 }
58
59 struct timeval tv;
60 (void) gettimeofday (&tv, NULL);
61
62 struct timespec ts;
63 TIMEVAL_TO_TIMESPEC (&tv, &ts);
64
65 /* Timeout in 5 seconds. */
66 ts.tv_sec += 5;
67
68 /* This call should block and be cancelable. */
69 sem_timedwait (&sem, &ts);
70
71 pthread_cleanup_pop (0);
72
73 return NULL;
74}
75
76
77static int
78do_test (void)
79{
80 pthread_t th;
81
82 if (pthread_barrier_init (&bar, NULL, 2) != 0)
83 {
84 puts ("error: barrier_init failed");
85 exit (1);
86 }
87
88 if (sem_init (&sem, 0, 1) != 0)
89 {
90 puts ("error: sem_init failed");
91 exit (1);
92 }
93
94 if (pthread_create (&th, NULL, tf, NULL) != 0)
95 {
96 puts ("error: create failed");
97 exit (1);
98 }
99
100 /* Check whether cancellation is honored even before sem_timedwait does
101 anything. */
102 if (pthread_cancel (th) != 0)
103 {
104 puts ("error: 1st cancel failed");
105 exit (1);
106 }
107
108 int e = pthread_barrier_wait (&bar);
109 if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
110 {
111 puts ("1st barrier_wait failed");
112 exit (1);
113 }
114
115 void *r;
116 if (pthread_join (th, &r) != 0)
117 {
118 puts ("join failed");
119 exit (1);
120 }
121
122 if (r != PTHREAD_CANCELED)
123 {
124 puts ("thread not canceled");
125 exit (1);
126 }
127
128 return 0;
129}
130
131
132#define TEST_FUNCTION do_test ()
133#include "../test-skeleton.c"
134

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