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/*
* Copyright (C) 2001-2006 Jacek Sieka, arnetheduck on gmail point com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if !defined(CRITICAL_SECTION_H)
#define CRITICAL_SECTION_H
#pragma once
class CriticalSection
{
public:
void enter() throw() {
EnterCriticalSection(&cs);
}
void leave() throw() {
LeaveCriticalSection(&cs);
}
CriticalSection() throw() {
InitializeCriticalSection(&cs);
}
~CriticalSection() throw() {
DeleteCriticalSection(&cs);
}
private:
CRITICAL_SECTION cs;
CriticalSection(const CriticalSection&);
CriticalSection& operator=(const CriticalSection&);
};
template<class T>
class LockBase {
public:
LockBase(T& aCs) throw() : cs(aCs) { cs.enter(); }
~LockBase() throw() { cs.leave(); }
private:
LockBase& operator=(const LockBase&);
T& cs;
};
typedef LockBase<CriticalSection> Lock;
/*
template<class T = CriticalSection>
class RWLock
{
public:
RWLock() throw() : cs(), readers(0) { }
~RWLock() throw() { }
void enterRead() throw() {
cs.enter();
InterlockedIncrement(&readers);
cs.leave();
}
void leaveRead() throw() {
InterlockedDecrement(&readers);
}
void enterWrite() throw() {
cs.enter();
while(readers > 0) {
::Sleep(1);
}
}
void leaveWrite() {
cs.leave();
}
private:
T cs;
volatile long readers;
};
template<class T = CriticalSection>
class RLock {
public:
RLock(RWLock<T>& aRwl) throw() : rwl(aRwl) { rwl.enterRead(); }
~RLock() throw() { rwl.leaveRead(); }
private:
RLock& operator=(const RLock&);
RWLock<T>& rwl;
};
template<class T = CriticalSection>
class WLock {
public:
WLock(RWLock<T>& aRwl) throw() : rwl(aRwl) { rwl.enterWrite(); }
~WLock() throw() { rwl.leaveWrite(); }
private:
WLock& operator=(const WLock&);
RWLock<T>& rwl;
};
*/
#endif // !defined(CRITICAL_SECTION_H)
/**
* @file
* $Id: CriticalSection.h,v 1.20 2006/03/05 10:17:03 bigmuscle Exp $
*/
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