shm.h

这是一个完整的图书馆供销存管理系统

/***************************************************************************
                          shm.h  -  description
                             -------------------
    begin                : Fri Jul 20 2001
    copyright            : (C) 2001 by Mark
    email                : [e-mail]
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/


#ifndef SHM_H
#define SHM_H

#include <sys/ipc.h>
#include <sys/shm.h>

#include <tinycxx/exception.h>


class CShm
{
public:
	CShm(key_t tKey, int iSize, int iMode = 0600);
	virtual ~CShm();
	
	void GetShm(int iMode = 0600);
	void AttachShm();
	void DetachShm();
	void RemoveShm();
	bool IfCreate() { return m_bCreate; }
	void InitShm();
	
protected:
	const key_t m_tShmKey;
	const int m_iShmSize;
	int m_iShmId;
	char* m_pchShm;
	int m_bCreate;
};

#endif