mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 06:20:06 +00:00
67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
/* C11 threads call_once test.
|
|
Copyright (C) 2018-2023 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 <threads.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
|
|
#include <support/check.h>
|
|
|
|
/* Flag that controls the first thread access. */
|
|
static once_flag flag = ONCE_FLAG_INIT;
|
|
|
|
static int value = 0;
|
|
|
|
static void
|
|
do_once (void)
|
|
{
|
|
value++;
|
|
}
|
|
|
|
static int
|
|
func (void* data)
|
|
{
|
|
call_once (&flag, do_once);
|
|
thrd_exit (thrd_success);
|
|
}
|
|
|
|
#define N 20
|
|
|
|
int
|
|
do_test (void)
|
|
{
|
|
thrd_t ids[N];
|
|
|
|
for (int i = 0; i < N; ++i)
|
|
{
|
|
if (thrd_create (&ids[i], func, NULL) != thrd_success)
|
|
FAIL_EXIT1 ("thrd_create failed");
|
|
}
|
|
|
|
/* Join threads. */
|
|
for (int i = 0; i < N; ++i)
|
|
{
|
|
if (thrd_join (ids[i], NULL) != thrd_success)
|
|
FAIL_EXIT1 ("thrd_join failed");
|
|
}
|
|
|
|
return (value != 1);
|
|
}
|
|
|
|
#include <support/test-driver.c>
|