进程间通信——共享内存(CreateFileMapping+MapViewOfFile) Windows

代码比较少，直接贴代码。发送端和接收端的代码基本相同。
发送端

// ShareMemory_Send.cpp : Defines the entry point for the console application. //#include "stdafx.h" #include BOOL Send() { //创建FileMapping对象 HANDLE hMapObject = CreateFileMapping(INVALID_HANDLE_VALUE,NULL,PAGE_READWRITE,0,0x1000,TEXT("shared")); if (NULL == hMapObject) { printf("创建文件映像失败\n"); return FALSE; } //将FileMapping对象映射到自己的进程 HANDLE hMapView = MapViewOfFile(hMapObject,FILE_MAP_WRITE,0,0,0); if (NULL == hMapView) { printf("内存映射失败\n"); return FALSE; } //写入数据 memset((char*)hMapView,0,0x1000); strcpy((char*)hMapView,"Test shared memory."); return TRUE; } int main(int argc, char* argv[]) { Send(); return 0; }

接收端

// ShareMemory_Recv.cpp : Defines the entry point for the console application. //#include "stdafx.h" #include BOOL Recv() { //创建FileMapping对象 HANDLE hMapObject = CreateFileMapping(INVALID_HANDLE_VALUE,NULL,PAGE_READWRITE,0,0x1000,TEXT("shared")); if (NULL == hMapObject) { printf("共享内存失败\n"); return FALSE; } //将FileMapping对象映射到自己的进程 HANDLE hMapView = MapViewOfFile(hMapObject,FILE_MAP_WRITE,0,0,0); if (NULL == hMapView) { printf("内存映射失败\n"); return FALSE; } //读取数据 char szBuffer[0x1000] = {0}; memcpy(szBuffer,hMapView,0x1000); printf("%s\n",szBuffer); return TRUE; }int main(int argc, char* argv[]) { Recv(); return 0; }

运行结果先让发送端程序跑起来，不要结束，否则FileMapping会被释放。