Question

I have this piece of code in a secondary thread:

DWORD result = WaitForSingleObject(myhandle,10000);
if(result == WAIT_OBJECT_0){
    AfxMessageBox(_T(...));
}
else if(result  == WAIT_TIMEOUT){

    AfxMessageBox(_T("Timeout"));
}

Sometimes, not always, the timeout will get called almost as soon as the WaitForSingleObject is called (not even 1s delay).

Am I doing something wrong ? Any suggestions for more stable alternatives ?

---

EDIT:

myhandle is created inside a class constructor as:

myhandle = CreateEvent(NULL,FALSE,FALSE,_T("myhandle"));

it would get called by another function:

SetEvent(myhandle);

The point is it works when I do the SetEvent, the problem is that it sometimes times out as soon as the WaitForSingleObject is called, even though it should wait 10s.

Answer 1

Took awhile but the problem actually was that the program sometimes did multiple calls to WaitForSingleObject. So it’s a previous call that is timing out.

Solution is to use WaitForMultipleObjects and set a cancelling event in the case it is known that the first event won’t be set, so the timer is cancelled before is it re-invoked.