CSingleLock Waiting Threads Execute in Order?

Hello everyone,

I have an application where multiple threads get passed to a processing method from a port. This method creates a CSingleLock on a CMutex object to ensure that only one thread executes at a time. Is there a way to ensure that the threads execute in the same order that they call the method?

IE - if there are 5 threads waiting on the same CMutex is there a way to ensure that the next thread that obtains the CMutex will be the first one that started waiting?

Apr 7 '11 #1

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✓ answered by hype261

I don't believe this is possible because the Operating System decides when threads get processor time.

Why can't you just use a basic queue in this case? If only one thread can execute in the processing method at a time then having a mutex and locking threading seems to be wasteful. Maybe there is a lot of processing going on before the thread gets passed to the processing method,

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hype261

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Apr 8 '11 #2

Ian Simpson

So I suppose you mean doing something like this.

Expand|Select|Wrap|Line Numbers

 
Service_Processor::process_response(Message_Object* msg)

{

   thread_queue.push(GetCurrentThread());

   if (thread_queue.size() > 0)

   {

      SuspendThread();

   }

   //Execute some callbacks or processing

   thread_queue.pop();

   if (thread_queue.size() > 0)

   {

      thread_queue.pop().Resume();

   }

}

this is just the first idea that came to mind. I have no idea if it would work or not.

Apr 8 '11 #3

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CSingleLock Waiting Threads Execute in Order?

✓ answered by hype261

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