! Aware to Perl: How do I open a file without blocking?

How do I open a file without blocking?

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You need to use the O_NDELAY or O_NONBLOCK flag from the Fcntl module in conjunction with sysopen():

    use Fcntl;
    sysopen(FH, "/tmp/somefile", O_WRONLY|O_NDELAY|O_CREAT, 0644)
    or die "can't open /tmp/somefile: $!":

Source: Perl FAQ: Files and Formats
Copyright: Copyright (c) 1997 Tom Christiansen and Nathan Torkington.

(Corrections, notes, and links courtesy of RocketAware.com)

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