/*All right reserved awinsyspro.com 2019*/
/*Mutex application in thread Synchronization*/
/*This example demonstrate printing odd and even number*/
#include<Windows.h>
#include<iostream>
using namespace std;
//Global Handle for Mutex
HANDLE hMutex = NULL;
//Global variable
int gCount = 1;
//STEP-3 Thread function for odd and even numbers
DWORD WINAPI ThreadFunEven(LPVOID lpParam)
{
       while (gCount<10)
       {
         //Mutex lock
         WaitForSingleObject(hMutex, INFINITE);
         //Critical Section Code
        if (gCount%2==0)
         {
             cout << "Even - " << gCount++ << endl;
          }
         //Mutex unlock
         ReleaseMutex(hMutex);
     }//while-loop
  return 0;
}
DWORD WINAPI ThreadFunOdd(LPVOID lpParam)
{
       while (gCount<10)
       {
             //Mutex lock
            WaitForSingleObject(hMutex, INFINITE);
           //Critical Section Code
           if (gCount % 2 == 1)
            {
              cout << "odd - " << gCount++ << endl;
             }
           //Mutex unlock
          ReleaseMutex(hMutex);
      }//while-loop
    return 0;
}
int main()
{
    //Local Variable
     HANDLE hThread1 = NULL;
     HANDLE hThread2 = NULL;
     //STEP-1 Create Mutex function
     hMutex = CreateMutex(
                      NULL,//Mutex Security Attribute
                     FALSE,//ownership
                    NULL);//mutex name
      if (NULL == hMutex)
       {
          cout << "Mutex Creation Failed" << endl;
          cout << "Error No - " << GetLastError() << endl;
        }
       cout << "Mutex Creation Success" << endl;
  //STEP-2 Create two thread function for odd and even
      hThread1 = CreateThread(
              NULL,          //Security Attribute
              0,             //Default Stack Size
              &ThreadFunEven,//ThreadStart Address
              NULL,          //Parameter
              0,            //Flags
              0);           //ThreadID

        hThread2 = CreateThread(
                  NULL,          //Security Attribute
                  0,             //Default Stack Size
                  &ThreadFunOdd,//ThreadStart Address
                  NULL,         //Parameter
                  0,           //Flags
                  0);         //ThreadID
    //STEP-4 CloseHandle for thread1 & Thread2
     CloseHandle(hThread1);
     CloseHandle(hThread2);
     system("PAUSE");
      return 0;
}