1.cpp

来自「进程通信与进程同步机制实践 有三个进程R、M、P」· C++ 代码 · 共 25 行

#include<iostream.h>
#include<windows.h>
#include<windowsx.h>
void main()
{
	HANDLE hFileMap = CreateFileMapping((HANDLE)0xFFFFFFFF, NULL, PAGE_READWRITE, 0,323,"my_file");
    if(hFileMap == NULL)
    {
      cout<<"文件映射错! "<<endl;
      return ;
	}
	PVOID pvFile = MapViewOfFile(hFileMap,FILE_MAP_WRITE,0,0,0);
    char* p=(char*)pvFile;
	*p=0;
	*(p+1)=0;
	*(p+2)=0;
	UnmapViewOfFile(pvFile);
    HANDLE srSemaphore = CreateSemaphore(NULL,10,10,"my_sr");
	HANDLE smSemaphore = CreateSemaphore(NULL,0,10,"my_sm");
	HANDLE spSemaphore = CreateSemaphore(NULL,0,10,"my_sp");
	HANDLE mutex = CreateSemaphore(NULL,1,1,"my_mutex");
    cout<<"建立成功:"<<endl;
	char shuru;
	cin>>shuru;
}