Contrary to popular belief, IPC::Open3 does not use fork under Win32. If indeed your open3() even comes from that module (you didn't say).

And I see no hints as to what $main->fileevent is. It looks vaguely like an interface to 4-argument select. If so, then you probably don't know that 4-argument select in Win32 only works on sockets and so can't be used on pipes like you are trying to do there.

        - tye (but my friends call me "Tye")

In reply to (tye)Re: Win32 fork using open3 by tye
in thread Win32 fork using open3 by NaSe77

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