gecko/js/src/jslock.h
2012-01-11 07:45:55 -08:00

88 lines
2.9 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef jslock_h__
#define jslock_h__
#include "jsapi.h"
#ifdef JS_THREADSAFE
# include "pratom.h"
# include "prlock.h"
# include "prcvar.h"
# include "prthread.h"
# include "prinit.h"
# define JS_ATOMIC_INCREMENT(p) PR_ATOMIC_INCREMENT((PRInt32 *)(p))
# define JS_ATOMIC_DECREMENT(p) PR_ATOMIC_DECREMENT((PRInt32 *)(p))
# define JS_ATOMIC_ADD(p,v) PR_ATOMIC_ADD((PRInt32 *)(p), (PRInt32)(v))
# define JS_ATOMIC_SET(p,v) PR_ATOMIC_SET((PRInt32 *)(p), (PRInt32)(v))
#else /* JS_THREADSAFE */
# define JS_ATOMIC_INCREMENT(p) (++*(p))
# define JS_ATOMIC_DECREMENT(p) (--*(p))
# define JS_ATOMIC_ADD(p,v) (*(p) += (v))
# define JS_ATOMIC_SET(p,v) (*(p) = (v))
#endif /* JS_THREADSAFE */
namespace js {
class AutoAtomicIncrement
{
int32_t *p;
JS_DECL_USE_GUARD_OBJECT_NOTIFIER
public:
AutoAtomicIncrement(int32_t *p JS_GUARD_OBJECT_NOTIFIER_PARAM)
: p(p) {
JS_GUARD_OBJECT_NOTIFIER_INIT;
JS_ATOMIC_INCREMENT(p);
}
~AutoAtomicIncrement() {
JS_ATOMIC_DECREMENT(p);
}
};
} /* namespace js */
#endif /* jslock_h___ */