1/* Test for completion thread 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 <signal.h>
21#include <stdio.h>
22#include <stdlib.h>
23#include <unistd.h>
24#include <errno.h>
25
26#define MY_SIVAL 27
27
28volatile sig_atomic_t flag;
29
30
31static void
32callback (sigval_t s)
33{
34 flag = s.sival_int;
35}
36
37static int
38wait_flag (void)
39{
40 while (flag == 0)
41 {
42 puts (s: "Sleeping...");
43 sleep (seconds: 1);
44 }
45
46 if (flag != MY_SIVAL)
47 {
48 printf (format: "signal handler received wrong signal, flag is %d\n", flag);
49 return 1;
50 }
51
52 return 0;
53}
54
55
56static int
57do_test (int argc, char *argv[])
58{
59 char name[] = "/tmp/aio5.XXXXXX";
60 int fd;
61 struct aiocb *arr[1];
62 struct aiocb cb;
63 static const char buf[] = "Hello World\n";
64 struct sigevent ev;
65
66 fd = mkstemp (template: name);
67 if (fd == -1)
68 {
69 printf (format: "cannot open temp name: %m\n");
70 return 1;
71 }
72
73 unlink (name: name);
74
75 arr[0] = &cb;
76
77 cb.aio_fildes = fd;
78 cb.aio_lio_opcode = LIO_WRITE;
79 cb.aio_reqprio = 0;
80 cb.aio_buf = (void *) buf;
81 cb.aio_nbytes = sizeof (buf) - 1;
82 cb.aio_offset = 0;
83 cb.aio_sigevent.sigev_notify = SIGEV_THREAD;
84 cb.aio_sigevent.sigev_notify_function = callback;
85 cb.aio_sigevent.sigev_notify_attributes = NULL;
86 cb.aio_sigevent.sigev_value.sival_int = MY_SIVAL;
87
88 ev.sigev_notify = SIGEV_THREAD;
89 ev.sigev_notify_function = callback;
90 ev.sigev_notify_attributes = NULL;
91 ev.sigev_value.sival_int = MY_SIVAL;
92
93 /* First use aio_write. */
94 if (aio_write (aiocbp: arr[0]) < 0)
95 {
96 if (errno == ENOSYS)
97 {
98 puts (s: "no aio support in this configuration");
99 return 0;
100 }
101 printf (format: "aio_write failed: %m\n");
102 return 1;
103 }
104
105 if (wait_flag ())
106 return 1;
107
108 puts (s: "aio_write OK");
109
110 flag = 0;
111 /* Again with lio_listio. */
112 if (lio_listio (LIO_NOWAIT, list: arr, nent: 1, sig: &ev) < 0)
113 {
114 printf (format: "lio_listio failed: %m\n");
115 return 1;
116 }
117
118 if (wait_flag ())
119 return 1;
120
121 puts (s: "all OK");
122
123 return 0;
124}
125
126#include "../test-skeleton.c"
127

source code of glibc/rt/tst-aio5.c