// 2002/07/05
// awzzz
// SFMMem.h: interface for the CSFMServer class.
//
//
#if !defined(AFX_SFMSERVER_H__2D76A439_6388_4B07_AE7A_C82F458642ED__INCLUDED_)
#define AFX_SFMSERVER_H__2D76A439_6388_4B07_AE7A_C82F458642ED__INCLUDED_
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#define DEFAULT_FILENAME NULL
#define DEFAULT_MAPNAME "TestShareMemory"
#define DEFAULT_MAPSIZE (0x0FFF + 1)
// Shared FileMap Server
// 使用说明
// 1.
// 创建CSFMServer对象
// CSFMServer(char *szFileName, char *szMapName, DWORD dwSize);
// Create(char *szFileName, char *szMapName, DWORD dwSize);
// 参数1:NULL或指定的文件(将创建或打开并读写/麻烦)
// 参数2:要创建的共享内存对象名
// 参数3:要创建的共享内存对象大小
// 2.
// 本地使用内存
// LPVOID GetBuffer()
// 返回共享内存地址
//
// 自动销毁
class CSFMServer
{
public:
CSFMServer();
virtual ~CSFMServer();
CSFMServer(char *szFileName, char *szMapName, DWORD dwSize);
HANDLE m_hMutex;
protected:
HANDLE m_hFile;
HANDLE m_hFileMap;
LPVOID m_lpFileMapBuffer;
string m_strMutexName;
char *m_pFileName;
char *m_pMapName;
DWORD m_dwSize;
int m_iCreateFlag;
private:
void Init();
void Destory();
public:
void Create(char *szFileName, char *szMapName, DWORD dwSize);
LPVOID GetBuffer();
DWORD GetSize();
};
// Shared FileMap Client
// 使用说明
// 1.
// 创建CSFMClient对象
// CSFMClient(DWORD dwAccess, char *szMapName);
// Open(DWORD dwAccess, char *szMapName);
// 参数1:共享内存对象访问方式(FILE_MAP_READ|FILE_MAP_WRITE)
// 参数2:共享内存对象名
// 2.
// 本地使用内存
// LPVOID GetBuffer()
// 返回共享内存地址
//
// 自动销毁
class CSFMClient
{
public:
CSFMClient();
virtual ~CSFMClient();
CSFMClient(DWORD dwAccess, char *szMapName,DWORD size);
HANDLE m_hMutex;
protected:
HANDLE m_hFileMap;
LPVOID m_lpFileMapBuffer;
string m_strMutexName;
char *m_pMapName;
DWORD m_dwSize;//共享缓冲区的大小
int m_iOpenFlag;
private:
void Init();
void Destory();
public:
void Open(DWORD dwAccess, char *szMapName);
LPVOID GetBuffer();
DWORD GetSize();
};
#endif // !defined(AFX_SFMSERVER_H__2D76A439_6388_4B07_AE7A_C82F458642ED__INCLUDED_)
// SFMMem.cpp: implementation of the CSFMServer class.
//
//
#include "stdafx.h"
#include "SFMMem.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
/
// Construction/Destruction(服务器端,创建共享缓冲区,共享缓冲区读取写入数据)
/
CSFMServer::CSFMServer()
{
Init();
//创建共享缓冲区
Create(DEFAULT_FILENAME, DEFAULT_MAPNAME, DEFAULT_MAPSIZE);
}
CSFMServer::~CSFMServer()
{
Destory();
}
CSFMServer::CSFMServer(char *szFileName, char *szMapName, DWORD dwSize)
{
Init();
//创建共享缓冲区
Create(szFileName, szMapName, dwSize);
//Create(DEFAULT_FILENAME, DEFAULT_MAPNAME, DEFAULT_MAPSIZE);
}
void CSFMServer::Init()
{
m_hFile = NULL;
m_hFileMap = NULL;
m_lpFileMapBuffer = NULL;
m_pFileName = NULL;
m_pMapName = NULL;
m_dwSize = 0;
m_iCreateFlag = 0;
}
void CSFMServer::Destory()
{
if (m_lpFileMapBuffer)
{
if (!UnmapViewOfFile(m_lpFileMapBuffer))
{
printf("Server UnmapViewOfFile失败!rn");
}
m_lpFileMapBuffer = NULL;
}
if (m_hFileMap)
{
if (!CloseHandle(m_hFileMap))
{
printf("Server CloseHandle 关闭映射文件句柄失败!rn");
}
m_hFileMap = NULL;
}
if (m_hFile && m_hFile != INVALID_HANDLE_VALUE)
{
if (!CloseHandle(m_hFile))
{
printf("Server CloseHandle 关闭互斥体句柄失败!rn");
}
m_hFile = NULL;
}
if (m_pFileName)
{
free(m_pFileName);
m_pFileName = NULL;
}
if (m_pMapName)
{
free(m_pMapName);
m_pMapName = NULL;
}
Init();
}
//创建共享缓冲区
void CSFMServer::Create(char *szFileName, char *szMapName, DWORD dwSize)
{
if (m_iCreateFlag)
{
Destory();
}
if (szFileName)
{
m_pFileName = _strdup(szFileName);
}
else
{
m_pFileName = NULL;
}
if (szMapName)
{
m_pMapName = _strdup(szMapName);
m_strMutexName=szMapName;
m_strMutexName+="mutex";
}
else
{
m_pMapName = _strdup(DEFAULT_MAPNAME);
m_strMutexName=DEFAULT_MAPNAME;
m_strMutexName+="mutex";
}
if (dwSize > 0)
{
m_dwSize = dwSize;
}
else
{
m_dwSize = DEFAULT_MAPSIZE;
}
if (m_pFileName)
{
// file
m_hFile = CreateFile(
m_pFileName,
GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE,
NULL,
OPEN_ALWAYS,//OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL
);
}
else
{
// system
m_hFile = (HANDLE)0xFFFFFFFF;
}
DWORD error;
//OutputDebugString((LPCSTR)m_hFile);
//error=GetLastError();
if (m_hFile)
{
m_hFileMap = CreateFileMapping(
m_hFile,
NULL,
PAGE_READWRITE,
0,
m_dwSize,
m_pMapName
);
//OutputDebugString((LPCSTR)m_hFile);
//使只有一个CSFMServer对象能操作内存对象(郝兴峰修改)
if (m_hFileMap != NULL)
{
error=GetLastError();
if ( ERROR_ALREADY_EXISTS == error)//如果已经存在了,就不要创建操作了。
{
m_hMutex=OpenMutex(SYNCHRONIZE,FALSE,m_strMutexName.c_str());
}
else
{
m_hMutex=CreateMutex(NULL,FALSE,m_strMutexName.c_str());
}
}
else
{
printf("Server CreateFileMapping失败!rn");
}
}
else
{
printf("Server CreateFile 失败!rn");
}
if (m_hFileMap)
{
m_lpFileMapBuffer = MapViewOfFile(
m_hFileMap,
FILE_MAP_ALL_ACCESS,//FILE_MAP_WRITE|FILE_MAP_READ,
0,
0,
0//m_dwSize改成0,在这里把它改为0,和读取写入的程序一样。郝兴峰修改09.11.13
);
if (NULL==m_lpFileMapBuffer)
{
printf("Server MapViewOfFile 失败!rn");
}
}
memset(m_lpFileMapBuffer,'',m_dwSize);//设置共享内存中的数据为0
m_iCreateFlag = 1;
}
//获取共享缓冲区的首指针
LPVOID CSFMServer::GetBuffer()
{
return (m_lpFileMapBuffer)?(m_lpFileMapBuffer):(NULL);
}
//获取共享缓冲区的大小
DWORD CSFMServer::GetSize()
{
return m_dwSize;
}
// Construction/Destruction (客户端,打开共享缓冲区,读取写入共享缓冲区的数据)
CSFMClient::CSFMClient()
{
Init();
//打开共享缓冲区
Open(FILE_MAP_ALL_ACCESS, DEFAULT_MAPNAME);
}
CSFMClient::~CSFMClient()
{
Destory();
}
CSFMClient::CSFMClient(DWORD dwAccess, char *szMapName,DWORD isizemap)
{
Init();
m_dwSize=isizemap;
//打开共享缓冲区
Open(dwAccess, szMapName);
}
void CSFMClient::Open(DWORD dwAccess, char *szMapName)
{
if (m_iOpenFlag)
Destory();
if (szMapName)
{
m_pMapName = _strdup(szMapName);
m_strMutexName=szMapName;
m_strMutexName+="mutex";
}
else
{
m_pMapName = _strdup(DEFAULT_MAPNAME);
m_strMutexName=DEFAULT_MAPNAME;
m_strMutexName+="mutex";
}
try
{
m_hFileMap = OpenFileMapping(
FILE_MAP_ALL_ACCESS,
FALSE,
m_pMapName
);
if (m_hFileMap)
{
m_lpFileMapBuffer = MapViewOfFile(
m_hFileMap,
FILE_MAP_ALL_ACCESS,
0,
0,
0//hxf修改,把0改成m_dwSize。把m_dwSize改成0,和上面的创建性质一样、郝兴峰,09.11.13
);
if (NULL==m_lpFileMapBuffer)
{
printf("Client MapViewOfFile失败!rn");
}
m_hMutex=OpenMutex(SYNCHRONIZE,FALSE,m_strMutexName.c_str());
}
else
{
printf("Client OpenFileMapping失败!rn");
}
}
catch (exception &e)
{
printf("Client MapViewOfFile或者Client OpenFileMapping异常rn");
printf("%srn",e.what());
}
m_iOpenFlag = 1;
}
void CSFMClient::Init()
{
m_hFileMap = NULL;
m_lpFileMapBuffer = NULL;
m_hMutex=NULL;
m_pMapName = NULL;
m_dwSize=0;
m_iOpenFlag = 0;
}
void CSFMClient::Destory()
{
if (m_lpFileMapBuffer)
{
if (!UnmapViewOfFile(m_lpFileMapBuffer))
{
printf("Client UnmapViewOfFile 失败!rn");
}
m_lpFileMapBuffer = NULL;
}
if (m_hFileMap)
{
if(!CloseHandle(m_hFileMap))
{
printf("Client 关闭映射文件句柄失败!rn");
}
m_hFileMap = NULL;
}
if (m_pMapName)
{
free(m_pMapName);
m_pMapName = NULL;
}
if (m_hMutex)
{
if (!CloseHandle(m_hMutex))
{
printf("Client 关闭互斥体句柄失败!rn");
}
m_hMutex=NULL;
}
Init();
}
LPVOID CSFMClient::GetBuffer()
{
return (m_lpFileMapBuffer)?(m_lpFileMapBuffer):(NULL);
}
//这里可能有点问题
DWORD CSFMClient::GetSize()
{
// unnable use
return m_dwSize;
}
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