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 <errno.h>
19#include <semaphore.h>
20#include <signal.h>
21#include <stdio.h>
22#include <unistd.h>
23
24
25static void
26handler (int sig)
27{
28 struct sigaction sa;
29
30 sa.sa_handler = SIG_DFL;
31 sa.sa_flags = 0;
32 sigemptyset (&sa.sa_mask);
33
34 sigaction (SIGALRM, act: &sa, NULL);
35
36 /* Rearm the timer. */
37 alarm (1);
38}
39
40
41static int
42do_test (void)
43{
44 sem_t s;
45 struct sigaction sa;
46
47 sa.sa_handler = handler;
48 sa.sa_flags = 0;
49 sigemptyset (&sa.sa_mask);
50
51 sigaction (SIGALRM, act: &sa, NULL);
52
53 if (sem_init (sem: &s, pshared: 0, value: 0) == -1)
54 {
55 puts (s: "init failed");
56 return 1;
57 }
58
59 /* Set an alarm for 1 second. The wrapper will expect this. */
60 alarm (1);
61
62 int res = sem_wait (sem: &s);
63 if (res == 0)
64 {
65 puts (s: "wait succeeded");
66 return 1;
67 }
68 if (res != -1 || errno != EINTR)
69 {
70 puts (s: "wait didn't fail with EINTR");
71 return 1;
72 }
73
74 return 0;
75}
76
77#define TEST_FUNCTION do_test ()
78#include "../test-skeleton.c"
79

source code of glibc/sysdeps/pthread/tst-sem6.c