sharemem.h

包含客户和服务器的升级程序,在linux下可以运行的.

/*
 * Copyright (C) 2006, Binary Ma
 * Licence: GNU GPL 1991 - version 2
 * Bug report: [e-mail]
*/

#ifndef __LIB_SHAREMEM
	#define __LIB_SHAREMEM 1

#include <string>
using namespace std;

class memmap
{
public:	
	memmap( const char* file, off_t length = -1 );
	~memmap();
	int size();

	char* map;

private:
	off_t map_size;
};

class share
{
public:
	share( int size, const char* name );
	share( int size );
	~share();
	
	char* share_open();
	int share_close( bool force = false );
	int error();

private:
	void init_tmpfs();
	int id;
	string name;
	char* buf;
	int size;
	bool create;
	const char* mnt;
	int eno;
};
#endif