I have some long running batch-oriented CGI programs and I want to prevent multiple instances of the program from running at the same time. On unix, I'd hit this nail with the "flock" hammer, but I happen to be working on a windows server. I'm wondering: What's the "best" way to implement this mutual exclusion on windows, and, secondly, is "flock" safe and secure on windows? Many thanks.

In reply to mutual exclusion and file locking on windows by fredt

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