Remove unused macro.
[dragonfly.git] / lib / libthread_xu / thread / thr_concurrency.c
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1/*
2 * Copyright (c) 2003 Daniel M. Eischen <deischen@freebsd.org>
3 * Copyright (c) 2003 Sergey Osokin <osa@freebsd.org.ru>.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Neither the name of the author nor the names of any co-contributors
12 * may be used to endorse or promote products derived from this software
13 * without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: src/lib/libpthread/thread/thr_concurrency.c,v 1.8 2004/03/14 05:24:27 bde Exp $
960dc1b5 28 * $DragonFly: src/lib/libthread_xu/thread/thr_concurrency.c,v 1.2 2005/02/21 13:40:54 davidxu Exp $
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29 */
30#include <errno.h>
31#include <pthread.h>
32#include <sys/types.h>
33#include <sys/sysctl.h>
34
35#include "thr_private.h"
36
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37static int level = 0;
38
39__weak_reference(_pthread_getconcurrency, pthread_getconcurrency);
40__weak_reference(_pthread_setconcurrency, pthread_setconcurrency);
41
42int
43_pthread_getconcurrency(void)
44{
45 return (level);
46}
47
48int
49_pthread_setconcurrency(int new_level)
50{
51 if (new_level < 0)
52 return (EINVAL);
53 level = new_level;
54 return 0;
55}