Question

How to call 3 threads sequentially many times? For example: In iteration 1, execution order should be “Thread0->thread1->thread2” then in iteration 2 should be same i.e “Thread0 -> thread1->thread2” and so on. The sample code is just executing 3 threads only once. It is not going to 2nd iteration.

    Thread0 = CreateThread( NULL,0,ThreadProc0, NULL, CREATE_SUSPENDED, &ThreadID);
    Thread1 = CreateThread( NULL,0,ThreadProc1, NULL, CREATE_SUSPENDED, &ThreadID);
    Thread2 = CreateThread( NULL,0,ThreadProc2, NULL, CREATE_SUSPENDED, &ThreadID);

    for(i=0;i<iterations;i++)                //Iterations in calling threads
    {
        ResumeThread(Thread0);
        WaitForSingleObject(Thread0, INFINITE);
        ResumeThread(Thread1);
        WaitForSingleObject(Thread1, INFINITE);
        ResumeThread(Thread2);
        WaitForSingleObject(Thread2, INFINITE);
    }

    // Close thread and semaphore handles

Answer 1

I think you misunderstand the concept. ResumeThread means to re-start the thread, not re-run the thread proc from the beginning. It just resume the proc from where it is stopped previously.

Basically there are two ways.

1. Create new threads in each iteration.
2. Rewrite your thread proc to live “forever” and sync with it using events.

Refer to here: How to restart threads?