The Old New Thing

You can use a file as a synchronization object, too

September 5, 2014 Sep 5, 2014 09/5/14

Raymond Chen

A customer was looking for a synchronization object that had the following properties: Can be placed in a memory-mapped file. Can be used by multiple processes simultaneously. Bonus if it can even be used by different machines simultaneously. Does not leak resources if the file is deleted. It turns out there is already a ...

Aha, I have found a flaw in the logic to detect whether my program is running on 64-bit Windows

September 4, 2014 Sep 4, 2014 09/4/14

Raymond Chen

Some time ago, I described how to detect programmatically whether you are running on 64-bit Windows, and one of the steps of the algorithm was "If you are a 64-bit program, then you are running on 64-bit Windows, because 32-bit Windows cannot run 64-bit programs." Every so often, somebody will claim that they found a flaw in this logic: "...