1 | /* Test sem_timedwait cancellation for uncontended case. |
2 | Copyright (C) 2003-2024 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
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, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <errno.h> |
20 | #include <pthread.h> |
21 | #include <semaphore.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_barrier_t bar; |
30 | static sem_t sem; |
31 | |
32 | |
33 | static void |
34 | cleanup (void *arg) |
35 | { |
36 | static int ncall; |
37 | |
38 | if (++ncall != 1) |
39 | { |
40 | puts (s: "second call to cleanup" ); |
41 | exit (1); |
42 | } |
43 | } |
44 | |
45 | |
46 | static void * |
47 | tf (void *arg) |
48 | { |
49 | pthread_cleanup_push (cleanup, NULL); |
50 | |
51 | int e = pthread_barrier_wait (barrier: &bar); |
52 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) |
53 | { |
54 | puts (s: "error: tf: 1st barrier_wait failed" ); |
55 | exit (1); |
56 | } |
57 | |
58 | struct timeval tv; |
59 | (void) gettimeofday (tv: &tv, NULL); |
60 | |
61 | struct timespec ts; |
62 | TIMEVAL_TO_TIMESPEC (&tv, &ts); |
63 | |
64 | /* Timeout in 5 seconds. */ |
65 | ts.tv_sec += 5; |
66 | |
67 | /* This call should block and be cancelable. */ |
68 | sem_timedwait (sem: &sem, abstime: &ts); |
69 | |
70 | pthread_cleanup_pop (0); |
71 | |
72 | return NULL; |
73 | } |
74 | |
75 | |
76 | static int |
77 | do_test (void) |
78 | { |
79 | pthread_t th; |
80 | |
81 | if (pthread_barrier_init (barrier: &bar, NULL, count: 2) != 0) |
82 | { |
83 | puts (s: "error: barrier_init failed" ); |
84 | exit (1); |
85 | } |
86 | |
87 | if (sem_init (sem: &sem, pshared: 0, value: 1) != 0) |
88 | { |
89 | puts (s: "error: sem_init failed" ); |
90 | exit (1); |
91 | } |
92 | |
93 | if (pthread_create (newthread: &th, NULL, start_routine: tf, NULL) != 0) |
94 | { |
95 | puts (s: "error: create failed" ); |
96 | exit (1); |
97 | } |
98 | |
99 | /* Check whether cancellation is honored even before sem_timedwait does |
100 | anything. */ |
101 | if (pthread_cancel (th: th) != 0) |
102 | { |
103 | puts (s: "error: 1st cancel failed" ); |
104 | exit (1); |
105 | } |
106 | |
107 | int e = pthread_barrier_wait (barrier: &bar); |
108 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) |
109 | { |
110 | puts (s: "1st barrier_wait failed" ); |
111 | exit (1); |
112 | } |
113 | |
114 | void *r; |
115 | if (pthread_join (th: th, thread_return: &r) != 0) |
116 | { |
117 | puts (s: "join failed" ); |
118 | exit (1); |
119 | } |
120 | |
121 | if (r != PTHREAD_CANCELED) |
122 | { |
123 | puts (s: "thread not canceled" ); |
124 | exit (1); |
125 | } |
126 | |
127 | return 0; |
128 | } |
129 | |
130 | |
131 | #define TEST_FUNCTION do_test () |
132 | #include "../test-skeleton.c" |
133 | |