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/* $MidnightBSD$ */ |
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/* |
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* Copyright (c) 2003 Sergey Osokin <osa@FreeBSD.org.ru>. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* This product includes software developed by Sergey Osokin. |
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* 4. Neither the name of the author nor the names of any co-contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY SERGEY OSOKIN AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* $FreeBSD: stable/10/lib/libthr/thread/thr_concurrency.c 157457 2006-04-04 02:57:49Z davidxu $ |
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*/ |
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|
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#include "namespace.h" |
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#include <errno.h> |
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#include <pthread.h> |
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#include "un-namespace.h" |
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|
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#include "thr_private.h" |
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|
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static int current_concurrency = 0; |
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|
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__weak_reference(_pthread_getconcurrency, pthread_getconcurrency); |
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__weak_reference(_pthread_setconcurrency, pthread_setconcurrency); |
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|
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int |
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_pthread_getconcurrency(void) |
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{ |
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return current_concurrency; |
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} |
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|
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int |
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_pthread_setconcurrency(int new_level) |
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{ |
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int ret; |
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|
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if (new_level < 0) { |
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ret = EINVAL; |
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} else { |
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current_concurrency = new_level; |
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ret = 0; |
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} |
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return (ret); |
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} |
