进程通信 - 共享内存

0x01 核心代码

发送端代码：					
					
HANDLE hMapObject;					
HANDLE hMapView;					
					
//创建FileMapping对象					
hMapObject = CreateFileMapping((HANDLE)0xFFFFFFFF,NULL,PAGE_READWRITE,0,0x1000,TEXT("shared"));					
if(!hMapObject)					
{					
	MessageBox(NULL,TEXT("共享内存失败"),TEXT("Error"),MB_OK);				
	return FALSE;				
}					
//将FileMapping对象映射到自己的进程					
hMapView = MapViewOfFile(hMapObject,FILE_MAP_WRITE,0,0,0);					
if(!hMapView)					
{					
	MessageBox(NULL,TEXT("内存映射失败"),TEXT("Error"),MB_OK);				
	return FALSE;				
}					
//向共享内存写入数据					
strcpy((char*)hMapView,"Test Shared Memery");					
					
					
接收端代码：					
					
HANDLE hMapObject;					
HANDLE hMapView;					
					
//创建FileMapping对象					
hMapObject = CreateFileMapping((HANDLE)0xFFFFFFFF,NULL,PAGE_READWRITE,0,0x1000,TEXT("shared"));					
if(!hMapObject)					
{					
	MessageBox(NULL,TEXT("共享内存失败"),TEXT("Error"),MB_OK);				
	return FALSE;				
}					
//将FileMapping对象映射到自己的进程					
hMapView = MapViewOfFile(hMapObject,FILE_MAP_WRITE,0,0,0);					
if(!hMapView)					
{					
	MessageBox(NULL,TEXT("内存映射失败"),TEXT("Error"),MB_OK);				
	return FALSE;				
}					
//从共享内存读取数据					
TCHAR szBuffer[0x1000] = {0};					
memcpy(szBuffer,hMapView,10);					
					

0x02 项目测试实例

进程通信 - 共享内存.rar

0x03 总结

掌握内存通信的几个函数就好

CreateFileMapping
MapViewOfFile