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Re: I want to launch two subroutines at once

by integral (Hermit)
on Feb 18, 2003 at 15:26 UTC ( #236274=note: print w/ replies, xml ) Need Help??

in reply to I want to launch two subroutines at once

The solution I can immediately think of is to create the activity bar (the 'monitoring process') first, and have it create the other as the child so that it knows its pid and can establish ipc structures before/after the fork. Something like the code below could be used.

pipe my $read, my $write; if (my $pid = fork()) { # monitor process close $write; read $read and update progress } else { close $read; while (1) { do stuff; print $write "status"; } }
This code does only creates the one other process however, so if you really want two subprocesses created you have to wrap it in another fork.

integral, resident of freenode's #perl

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Re: Re: I want to launch two subroutines at once
by juo (Curate) on Feb 18, 2003 at 16:39 UTC

    I have tried this code on Perl 5.6 - Windows 2000 and it generates Dr watson. Looks like Fork is not made for Windows 2000.

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