note
zentara
<i>I haven't been able to find good examples of using ForkManager to read a file a line-at-a-time and then doing something with those lines. </i><p>
This isn't exactly your scenario, but it may help get you going.
<c>
#!/usr/bin/perl
use warnings;
use strict;
use Parallel::ForkManager;
my $dir = shift || '.';
my @dirs = get_sub_dirs($dir);
my $max_tasks = 3;
my $pm = new Parallel::ForkManager($max_tasks);
$|++;
my $start = time();
for my $dir (@dirs) {
my $pid = $pm->start and next;
printf "Begin processing $dir at %d secs.....\n", time() - $start;
#push all the $dir/files into @ARGV and search through them
#line by line
@ARGV = <$dir/*>;
while (<ARGV>) {
close ARGV if eof;
#find some search term, using "perl" for example
if( $_ =~ /perl/)
{
print "$ARGV: $. :$_\n";
$pm->finish;
goto END;
}
}
END:
printf ".... $dir done at %d secs!\n", time() - $start;
$pm->finish;
}
print " all done\n";
exit;
##########################################################
sub get_sub_dirs {
my $dir = shift;
opendir my $dh, $dir or die "Error: $!";
my @dirs = grep { -d $_ } readdir $dh;
@dirs = grep !/^\.\.?$/, @dirs;
closedir $dh;
return @dirs;
}
</c>
<!-- Node text goes above. Div tags should contain sig only -->
<div class="pmsig"><div class="pmsig-131741">
<hr />
I'm not really a human, but I play one on earth.<br>
[id://630805] ................... <a href=http://zentara.net/japh.html> flash japh </a>
</div></div>
994602
994602