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/* -*- 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 ***** */
/*
** RCCondition - C++ wrapper around NSPR's PRCondVar
**
** Conditions have a notion of timeouts. A thread that waits on a condition
** will resume execution when the condition is notified OR when a specified
** interval of time has expired.
**
** Most applications don't adjust the timeouts on conditions. The literature
** would argue that all threads waiting on a single condition must have the
** same semantics. But if an application wishes to modify the timeout with
** (perhaps) each wait call, that modification should be done consistantly
** and under protection of the condition's associated lock.
**
** The default timeout is infinity.
*/
#if defined(_RCCOND_H)
#else
#define _RCCOND_H
#include "rclock.h"
#include "rcbase.h"
#include "rcinrval.h"
struct PRCondVar;
class PR_IMPLEMENT(RCCondition): public RCBase
{
public:
RCCondition(RCLock*); /* associates CV with a lock and infinite tmo */
virtual ~RCCondition();
virtual PRStatus Wait(); /* applies object's current timeout */
virtual PRStatus Notify(); /* perhaps ready one thread */
virtual PRStatus Broadcast(); /* perhaps ready many threads */
virtual PRStatus SetTimeout(const RCInterval&);
/* set object's current timeout value */
private:
PRCondVar *cv;
RCInterval timeout;
RCCondition();
RCCondition(const RCCondition&);
void operator=(const RCCondition&);
public:
RCInterval GetTimeout() const;
}; /* RCCondition */
inline RCCondition::RCCondition(): RCBase() { }
inline RCCondition::RCCondition(const RCCondition&): RCBase() { }
inline void RCCondition::operator=(const RCCondition&) { }
#endif /* defined(_RCCOND_H) */
/* RCCond.h */
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