1/* Test for notification mechanism in lio_listio.
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#include <pthread.h>
26
27static pthread_barrier_t b;
28
29
30static void
31thrfct (sigval_t arg)
32{
33 int e = pthread_barrier_wait (barrier: &b);
34 if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
35 {
36 puts (s: "child: barrier_wait failed");
37 exit (1);
38 }
39}
40
41
42static int
43do_test (int argc, char *argv[])
44{
45 char name[] = "/tmp/aio3.XXXXXX";
46 int fd;
47 struct aiocb *arr[1];
48 struct aiocb cb;
49 static const char buf[] = "Hello World\n";
50
51 fd = mkstemp (template: name);
52 if (fd == -1)
53 {
54 printf (format: "cannot open temp name: %m\n");
55 return 1;
56 }
57
58 unlink (name: name);
59
60 if (pthread_barrier_init (barrier: &b, NULL, count: 2) != 0)
61 {
62 puts (s: "barrier_init failed");
63 return 1;
64 }
65
66 arr[0] = &cb;
67
68 cb.aio_fildes = fd;
69 cb.aio_lio_opcode = LIO_WRITE;
70 cb.aio_reqprio = 0;
71 cb.aio_buf = (void *) buf;
72 cb.aio_nbytes = sizeof (buf) - 1;
73 cb.aio_offset = 0;
74 cb.aio_sigevent.sigev_notify = SIGEV_THREAD;
75 cb.aio_sigevent.sigev_notify_function = thrfct;
76 cb.aio_sigevent.sigev_notify_attributes = NULL;
77 cb.aio_sigevent.sigev_value.sival_ptr = NULL;
78
79 if (lio_listio (LIO_NOWAIT, list: arr, nent: 1, NULL) < 0)
80 {
81 if (errno == ENOSYS)
82 {
83 puts (s: "no aio support in this configuration");
84 return 0;
85 }
86 printf (format: "lio_listio failed: %m\n");
87 return 1;
88 }
89
90 if (aio_suspend (list: (const struct aiocb *const *) arr, nent: 1, NULL) < 0)
91 {
92 printf (format: "aio_suspend failed: %m\n");
93 return 1;
94 }
95
96 int e = pthread_barrier_wait (barrier: &b);
97 if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
98 {
99 puts (s: "parent: barrier_wait failed");
100 return 1;
101 }
102
103 puts (s: "all OK");
104
105 return 0;
106}
107
108#include "../test-skeleton.c"
109

source code of glibc/rt/tst-aio3.c