# Copyright (C) 2021 all contributors
# License: AGPL-3.0+
# for PublicInbox::IPC wq_* (work queue) workers
package PublicInbox::WQWorker;
use strict;
use v5.10.1;
use parent qw(PublicInbox::DS);
use PublicInbox::Syscall qw(EPOLLIN EPOLLEXCLUSIVE EPOLLET);
use Errno qw(EAGAIN ECONNRESET);
use IO::Handle (); # blocking
sub new {
my ($cls, $wq, $field) = @_;
my $s2 = $wq->{$field // '-wq_s2'} // die "BUG: no {$field}";
$s2->blocking(0);
my $self = bless { sock => $s2, wq => $wq }, $cls;
$self->SUPER::new($s2, EPOLLEXCLUSIVE|EPOLLIN|EPOLLET);
$self;
}
sub event_step {
my ($self) = @_;
my $n;
do {
$n = $self->{wq}->recv_and_run($self->{sock});
} while ($n);
return if !defined($n) && $! == EAGAIN; # likely
warn "wq worker error: $!\n" if !defined($n) && $! != ECONNRESET;
$self->{wq}->wq_atexit_child if $self->{sock} == $self->{wq}->{-wq_s2};
$self->close; # PublicInbox::DS::close
}
1;