Mutex

　　1. mutex "critical zone" between different processes, cross-process

#include " the stdafx.h " 
#include <WINDOWS.H> int main ( int argc, char * the argv []) 
{ // create a mutex 
    HANDLE g_hMutex the CreateMutex = (NULL, FALSE, (LPCWSTR) " the XYZ " ) ; // Create out whether a second parameter signal
                                                                // wait signal (token)     the WaitForSingleObject (g_hMutex, of INFINITE);
     for ( int I = 0 ; I < 10 ; I ++ ) 
    { 
        Sleep ( 1000


    

 );
        the printf ( " the Y thread B process:% D \ n- " , I); 
    } 
    // release the token (signal) 
    the ReleaseMutex (g_hMutex); 

    return  0 ; 
}

Examples of anti-mutex to open:

// mutex .cpp: Defines the entry point console application.
//
 
#include " the stdafx.h " 
#include <WINDOWS.H> int main () 
{ // create a mutex 
    HANDLE g_hMutex the CreateMutex = (NULL, FALSE, (LPCWSTR) " to prevent multiple open " ); // first Create two parameters are signaled out
     // wait signal (token) 
    DWORD dwRet = the GetLastError ();
     iF (g_hMutex) 
    { iF (ERROR_ALREADY_EXISTS == dwRet) 
        { 
            the CloseHandle (g_hMutex); return 0 ; 
        } 
    }


    

        
             

    the else 
    { 
        the printf ( " creation fails, the program exits \ n-! " ); 
        the CloseHandle (g_hMutex); 
        return  0 ; 
    } 

    for ( int I = 0 ; I < 10 ; I ++ ) 

    { 
        Sleep ( 1000 ); 
        the printf ( " A Process thread X: D% \ n- " , I); 
    } 


    return  0 ; 
}