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Re: Problem breaking loop (with close button) in main thread [message #59041 is a reply to message #59040]

Wed, 19 October 2022 02:42

Lance is currently offline

Lance
Messages: 527
Registered: March 2007

Contributor

In the loop (by goto, there is an implicit loop), if you call ProcessEvent, which gives chance for Paint() who will call this function one more time and stuck in the same [b]WaitForSingleEvent[b] failure, and it will call [b]ProcessEvents[b] in its waiting loop, ... it goes on until stack is exhausted. I might be wrong, but that's my gut's feeling why adding ProcessEvent doesn't work for you.

I would add some check like this:

DWORD GuiAcquireMutex(HANDLE hMutex, DWORD dwTimeout)
{
  static int inthecall;

  if( inthecall )
       return ERROR_IN_CALL; // define this value yourself
  ++inthecall;
  if(hMutex == INVALID_HANDLE_VALUE)
   return ERROR_INVALID_HANDLE;
 
 long long llNow;
 long long llStart        = GetMilliTime();
 long long llEnd          = llStart + (long long) dwTimeout;
 DWORD     dwShortTimeout = 1000;        // 1 second
 DWORD     dwLastError;
 DWORD     dwWaitResult;
   ....

Make sure you --inthecall; in all branches before leaving the function.

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[Message index]

		Problem breaking loop (with close button) in main thread By: awksed on Tue, 18 October 2022 17:19
		Re: Problem breaking loop (with close button) in main thread By: Lance on Tue, 18 October 2022 19:15
		Re: Problem breaking loop (with close button) in main thread By: Lance on Tue, 18 October 2022 20:09
		Re: Problem breaking loop (with close button) in main thread By: awksed on Wed, 19 October 2022 01:11
		Re: Problem breaking loop (with close button) in main thread By: Lance on Wed, 19 October 2022 02:21
		Re: Problem breaking loop (with close button) in main thread By: Lance on Wed, 19 October 2022 02:42
		Re: Problem breaking loop (with close button) in main thread By: awksed on Wed, 19 October 2022 20:56
		Re: Problem breaking loop (with close button) in main thread By: Lance on Thu, 20 October 2022 01:04
		Re: Problem breaking loop (with close button) in main thread By: Oblivion on Thu, 20 October 2022 20:10
		Re: Problem breaking loop (with close button) in main thread By: Lance on Thu, 20 October 2022 21:49

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