1 files changed, 8 insertions, 4 deletions
diff --git a/lib/PublicInbox/ParentPipe.pm b/lib/PublicInbox/ParentPipe.pm
index ccc0815e..6ef51c1a 100644
--- a/lib/PublicInbox/ParentPipe.pm
+++ b/lib/PublicInbox/ParentPipe.pm
@@ -1,20 +1,24 @@
  # Copyright (C) 2016-2018 all contributors <meta@public-inbox.org>
  # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
-# only for PublicInbox::Daemon
+
+# only for PublicInbox::Daemon, allows worker processes to be
+# notified if the master process dies.
  package PublicInbox::ParentPipe;
  use strict;
  use warnings;
  use base qw(PublicInbox::DS);
  use fields qw(cb);
+use PublicInbox::Syscall qw(EPOLLIN EPOLLONESHOT);
  
  sub new ($$$) {
-        my ($class, $pipe, $cb) = @_;
+        my ($class, $pipe, $worker_quit) = @_;
          my $self = fields::new($class);
-        $self->SUPER::new($pipe, PublicInbox::DS::EPOLLIN());
-        $self->{cb} = $cb;
+        $self->SUPER::new($pipe, EPOLLIN|EPOLLONESHOT);
+        $self->{cb} = $worker_quit;
          $self;
  }
  
+# master process died, time to call worker_quit ourselves
  sub event_step { $_[0]->{cb}->($_[0]) }
  
  1;