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/*
dbx_tree: tree database driver for Miranda IM
Copyright 2007-2010 Michael "Protogenes" Kunz,
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.
*/
#pragma once
#include <windows.h>
#include "TLS.h"
#include "stdint.h"
class CMultiReadExclusiveWriteSynchronizer
{
private:
uint64_t volatile m_Sentinel;
HANDLE m_ReadSignal[2];
HANDLE m_WriteSignal;
volatile uint32_t m_Revision;
unsigned int m_WriterID;
unsigned int m_WriteRecursion;
CThreadLocalStorage<CMultiReadExclusiveWriteSynchronizer, unsigned> tls;
public:
CMultiReadExclusiveWriteSynchronizer();
virtual ~CMultiReadExclusiveWriteSynchronizer();
void BeginRead();
void EndRead();
bool BeginWrite();
bool TryBeginWrite();
bool EndWrite();
unsigned int Waiting();
unsigned int WriteRecursionCount() {return m_WriteRecursion;};
};
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