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/* Test for notification mechanism in lio_listio.
Copyright (C) 2000-2020 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
<https://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"
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