1/* Test for timeout handling.
2 Copyright (C) 2000-2022 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 <aio.h>
20#include <errno.h>
21#include <stdio.h>
22#include <unistd.h>
23#include <sys/time.h>
24
25
26#define TEST_FUNCTION do_test ()
27static int
28do_test (void)
29{
30 struct aiocb *arr[1];
31 struct aiocb cb;
32 char buf[100];
33 struct timeval before;
34 struct timeval after;
35 struct timespec timeout;
36 int fd[2];
37 int result = 0;
38
39 if (pipe (pipedes: fd) != 0)
40 {
41 printf (format: "cannot create pipe: %m\n");
42 return 1;
43 }
44
45 arr[0] = &cb;
46
47 cb.aio_fildes = fd[0];
48 cb.aio_lio_opcode = LIO_WRITE;
49 cb.aio_reqprio = 0;
50 cb.aio_buf = (void *) buf;
51 cb.aio_nbytes = sizeof (buf) - 1;
52 cb.aio_offset = 0;
53 cb.aio_sigevent.sigev_notify = SIGEV_NONE;
54
55 /* Try to read from stdin where nothing will be available. */
56 if (aio_read (aiocbp: arr[0]) < 0)
57 {
58 if (errno == ENOSYS)
59 {
60 puts (s: "no aio support in this configuration");
61 return 0;
62 }
63 printf (format: "aio_read failed: %m\n");
64 return 1;
65 }
66
67 /* Get the current time. */
68 gettimeofday (tv: &before, NULL);
69
70 /* Wait for input which is unsuccessful and therefore the function will
71 time out. */
72 timeout.tv_sec = 3;
73 timeout.tv_nsec = 0;
74 if (aio_suspend (list: (const struct aiocb *const*) arr, nent: 1, timeout: &timeout) != -1)
75 {
76 puts (s: "aio_suspend() didn't return -1");
77 result = 1;
78 }
79 else if (errno != EAGAIN)
80 {
81 puts (s: "error not set to EAGAIN");
82 result = 1;
83 }
84 else
85 {
86 gettimeofday (tv: &after, NULL);
87 if (after.tv_sec < before.tv_sec + 1)
88 {
89 puts (s: "timeout came too early");
90 result = 1;
91 }
92 }
93
94 return result;
95}
96
97#include "../test-skeleton.c"
98

source code of glibc/rt/tst-aio6.c