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#! /usr/bin/perl
use strict;
use warnings;
use Fcntl qw/:flock/;
use File::Temp qw/tempfile/;
use Test::More tests => 4;
use Parallel::Prefork;
my $reaped = 0;
my $pm = Parallel::Prefork->new({
max_workers => 30,
fork_delay => 0,
on_child_reap => sub {
$reaped++;
}
});
my ($fh, $filename) = tempfile;
syswrite $fh, '0', 1;
close $fh;
my $manager_pid = $$;
until ($pm->signal_received) {
$pm->start and next;
open my $fh, '+<', $filename
or die "failed to open temporary file: $filename: ";
flock $fh, LOCK_EX;
sysread $fh, my $worker_count, 10;
$worker_count++;
seek $fh, 0, 0;
syswrite $fh, $worker_count, length($worker_count);
flock $fh, LOCK_UN;
close $fh;
my $rcv = 0;
local $SIG{TERM} = sub { $rcv++ };
if ($worker_count == $pm->max_workers) {
kill 'TERM', $manager_pid;
}
sleep(100) while $rcv * 10 < $worker_count;
$pm->finish;
}
is $pm->wait_all_children(1), 20, 'should reap one worker.';
$pm->signal_all_children('TERM');
is $pm->wait_all_children(1), 10, 'should reap one worker.';
$pm->signal_all_children('TERM');
$pm->wait_all_children();
is $pm->num_workers, 0, 'all workers reaped.';
is($reaped, $pm->max_workers, "properly called on_child_reap callback");
unlink $filename;
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