It really depends on your operating system. In most Unix variants, this will only tell you if a process with the given pid exists in the process table, not whether it's doing anything. In other words, it will return true unless and until the process in question exits.

I'm not sure if it's the same on Win32, but I suspect it is.

In reply to Re: kill 0 always true by VSarkiss
in thread kill 0 always true by Xxaxx

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