syncobject.h

来自「虚拟打印机」· C头文件 代码 · 共 60 行

/*
 *
 * syncobject.h
 *
 *
   Copyright (C) 2006 Michael H. Overlin

   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
   
   Contact at [e-mail]
 */

#ifndef SYNCOBJECT_H
#define SYNCOBJECT_H

#include <windows.h>


class SynchronizedObject {
public:
	SynchronizedObject(void)  { ::InitializeCriticalSection(& m_cs); }
	~SynchronizedObject() { ::DeleteCriticalSection(& m_cs); }

	// NOTE:  TO ENSURE THAT EVERY Lock WILL BE FOLLOWED BY AN UnLock
	//        AND AVOID THREAD DEADLOCK, THESE MEMBER CALLS SHOULD BE PROTECTED BY try/finally BLOCKS:
	// synObj.Lock();
	// __try {
	//     *** YOUR CODE THAT USES "synObj" ***
	// } __finally {
	//     synObj.UnLock();
	// }
	//  ------ OR ------
	// synObj.Lock();
	// try {
	//     *** YOUR CODE THAT USES "synObj" ***
	// } catch(...) {
	//     synObj.UnLock();
	//	   throw;
	// }
	// UnLock();

	void Lock(void) { ::EnterCriticalSection(& m_cs);  }
	void UnLock(void) { ::LeaveCriticalSection(& m_cs); }
private:
	::CRITICAL_SECTION m_cs;
};

#endif