多进程间的互斥对象通信

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代码程序进程1：

#include<iostream>#include <Windows.h>#include <process.h>//使用进程using namespace std;HANDLE hMutex;//定义一个句柄给互斥对象使用DWORD WINAPI Mythread(LPVOID lp1){   char ct1;   WaitForSingleObject(hMutex,INFINITE);   cout<<"Get Mutex"<<endl;   cout<<"Please input the control charater:";   while(1)   {      cin>>ct1;      if(ct1=='q'||ct1=='Q')      {          cout<<"Finished"<<endl;          break;      }      else          cout<<"Please input again:"<<endl;   }   ReleaseMutex(hMutex);   cout<<"Release the Mutex"<<endl;   cout<<"Come to your turn:"<<endl;   return 0;}int main(int argc,char* argv[]){  HANDLE hHandle;  DWORD dw1;  hMutex=CreateMutex(NULL,      FALSE,     "MyMutexObject");//有名的互斥对象，可用于进程间的同步//检查互斥变量是否创建成功，严格；来说，每次都要在程序中检查这种  if(hMutex==NULL)  {      cout<<"CreateMutex error :"<<GetLastError();      CloseHandle(hMutex);//关闭互斥变量的句柄  }  else  {     if(GetLastError()==ERROR_ALREADY_EXISTS)     {         cout<<"Mutex has been created!"<<endl;     }     else     {         cout<<"createMutex successfully"<<endl;     }     hHandle=CreateThread(NULL,0,Mythread,NULL,0,&dw1);     cout<<"create worker handle"<<endl;  }  Sleep(70000);  CloseHandle(hHandle);  CloseHandle(hMutex);  return 0;}

进程2：

include <iostream>#include <Windows.h>#include <process.h>using namespace std;HANDLE hMutex;DWORD WINAPI MyThread(LPVOID lp){   WaitForSingleObject(hMutex,INFINITE);   cout<<"Get the Mutex"<<endl;   cout<<"Hello!everyone come to my turn"<<endl;   ReleaseMutex(hMutex);   cout<<"Release the mutex"<<endl;   return 0;}int main(int argc,char *argv[]){    DWORD dw;    hMutex=OpenMutex(MUTEX_ALL_ACCESS,FALSE,"MyMutexObject");    if(hMutex==NULL)    {        cout<<"OpenMutex error:"<<endl;        CloseHandle(hMutex);    }    else    {      if (GetLastError()==ERROR_ALREADY_EXISTS)      {          cout<<"Mutex has been opened"<<endl;      }      else          cout<<"Open Mutex successfully"<<endl;    HANDLE hHandle=CreateThread(NULL,0,MyThread,NULL,0,&dw);    CloseHandle(hHandle);//得把句柄关闭放在这儿，不然会提示句柄没有初始化      cout<<"create worker Mutex "<<endl;    }    Sleep(70000);//把时间用的很长，便于操作得到反应    CloseHandle(hMutex);    //CloseHandle();    return 0;}

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