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olegwtf/gist:68e859016c2602ac4342b4c8e2a93b25

Last active November 11, 2016 10:42
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gistfile1.pm
package ScriptLock;
use strict;
use FindBin;
use Fcntl ':flock';
my $fh;
sub import {
return if $fh;
open $fh, '<', "$FindBin::Bin/$FindBin::Script"
or die "open: $!";
flock $fh, LOCK_EX|LOCK_NB
or die "flock: $!";
}
1;
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