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glibc/rt/tst-aio3.c
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/* Test for notification mechanism in lio_listio. | |
Copyright (C) 2000-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <aio.h> | |
#include <signal.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <unistd.h> | |
#include <errno.h> | |
#include <pthread.h> | |
static pthread_barrier_t b; | |
static void | |
thrfct (sigval_t arg) | |
{ | |
int e = pthread_barrier_wait (&b); | |
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) | |
{ | |
puts ("child: barrier_wait failed"); | |
exit (1); | |
} | |
} | |
static int | |
do_test (int argc, char *argv[]) | |
{ | |
char name[] = "/tmp/aio3.XXXXXX"; | |
int fd; | |
struct aiocb *arr[1]; | |
struct aiocb cb; | |
static const char buf[] = "Hello World\n"; | |
fd = mkstemp (name); | |
if (fd == -1) | |
{ | |
printf ("cannot open temp name: %m\n"); | |
return 1; | |
} | |
unlink (name); | |
if (pthread_barrier_init (&b, NULL, 2) != 0) | |
{ | |
puts ("barrier_init failed"); | |
return 1; | |
} | |
arr[0] = &cb; | |
cb.aio_fildes = fd; | |
cb.aio_lio_opcode = LIO_WRITE; | |
cb.aio_reqprio = 0; | |
cb.aio_buf = (void *) buf; | |
cb.aio_nbytes = sizeof (buf) - 1; | |
cb.aio_offset = 0; | |
cb.aio_sigevent.sigev_notify = SIGEV_THREAD; | |
cb.aio_sigevent.sigev_notify_function = thrfct; | |
cb.aio_sigevent.sigev_notify_attributes = NULL; | |
cb.aio_sigevent.sigev_value.sival_ptr = NULL; | |
if (lio_listio (LIO_NOWAIT, arr, 1, NULL) < 0) | |
{ | |
if (errno == ENOSYS) | |
{ | |
puts ("no aio support in this configuration"); | |
return 0; | |
} | |
printf ("lio_listio failed: %m\n"); | |
return 1; | |
} | |
if (aio_suspend ((const struct aiocb *const *) arr, 1, NULL) < 0) | |
{ | |
printf ("aio_suspend failed: %m\n"); | |
return 1; | |
} | |
int e = pthread_barrier_wait (&b); | |
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) | |
{ | |
puts ("parent: barrier_wait failed"); | |
return 1; | |
} | |
puts ("all OK"); | |
return 0; | |
} | |
#include "../test-skeleton.c" |