C++进程共享数据封装成类实例
本文实例讲述了C++进程共享数据封装成类的方法，分享给大家供大家参考。具体方法如下：
ShareMemory.cpp源文件如下：
#include"ShareMemory.h"
CShareMemory::CShareMemory(const char*pszMapName,intnFileSize,BOOLbServer):m_hFileMap(NULL),m_pBuffer(NULL)
{
if(bServer)//是服务端，就创建
{
m_hFileMap=::CreateFileMapping(INVALID_HANDLE_VALUE,NULL,PAGE_EXECUTE_READWRITE,0,nFileSize,pszMapName);
}
else//否则就打开
{
m_hFileMap=::OpenFileMapping(FILE_MAP_ALL_ACCESS,FALSE,pszMapName);
}
//把它映射到内存
m_pBuffer=::MapViewOfFile(m_hFileMap,FILE_MAP_ALL_ACCESS,0,0,0);
}
CShareMemory::~CShareMemory(void)
{
::UnmapViewOfFile(m_pBuffer);
::CloseHandle(m_hFileMap);
}
ShareMemory.h头文件如下：
#pragmaonce
#include<Windows.h>
classCShareMemory
{
public:
CShareMemory(const char*pszMapName,intnFileSize=0,BOOLbServer=FALSE);
~CShareMemory(void);
//属性
LPVOIDGetBuffer()const
{
returnm_pBuffer;
}
//实现
private:
HANDLEm_hFileMap;
LPVOIDm_pBuffer;
};
使用时用法如下：
服务端：
#include"ShareMemory.h"
intmain(intargc,char*argv[])
{
//进程间内存共享
LPCTSTRlpName="hello";
LPCTSTRlpContent="123456";
CShareMemory*pShareMemory=newCShareMemory(lpName,20,FALSE);
LPVOIDlpBase=pShareMemory->GetBuffer();
strcpy((char*)lpBase,lpContent);
printf("%s\n",(char*)pShareMemory->GetBuffer());
getchar();
return0;
}
客户端：
#include"ShareMemory.h"
intmain(intargc,char*argv[])
{
//进程间内存共享
LPCTSTRlpName="hello";
LPCTSTRlpContent="123456";
CShareMemory*pShareMemory=newCShareMemory(lpName,20,FALSE);
printf("%s\n",(char*)pShareMemory->GetBuffer());
getchar();
return0;
}
希望本文所述对大家的C++程序设计有所帮助。