blob: 9e20ef04c7f7dea8182138619564da961c9ce203 [file] [log] [blame] [edit]
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 the Netscape Portable Runtime (NSPR).
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either 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 ***** */
/*
** C++ access to NSPR locks (PRLock)
*/
#if defined(_RCLOCK_H)
#else
#define _RCLOCK_H
#include "rcbase.h"
#include <prlock.h>
class PR_IMPLEMENT(RCLock): public RCBase
{
public:
RCLock();
virtual ~RCLock();
void Acquire(); /* non-reentrant */
void Release(); /* should be by owning thread */
friend class RCCondition;
private:
RCLock(const RCLock&); /* can't do that */
void operator=(const RCLock&); /* nor that */
PRLock *lock;
}; /* RCLock */
/*
** Class: RCEnter
**
** In scope locks. You can only allocate them on the stack. The language
** will insure that they get released (by calling the destructor) when
** the thread leaves scope, even if via an exception.
*/
class PR_IMPLEMENT(RCEnter)
{
public:
~RCEnter(); /* releases the lock */
RCEnter(RCLock*); /* acquires the lock */
private:
RCLock *lock;
RCEnter();
RCEnter(const RCEnter&);
void operator=(const RCEnter&);
void *operator new(PRSize) { return NULL; }
void operator delete(void*) { }
}; /* RCEnter */
inline RCEnter::RCEnter(RCLock* ml) { lock = ml; lock->Acquire(); }
inline RCEnter::~RCEnter() { lock->Release(); lock = NULL; }
#endif /* defined(_RCLOCK_H) */
/* RCLock.h */