1 files changed, 12 insertions, 5 deletions
diff --git a/lib/PublicInbox/ParentPipe.pm b/lib/PublicInbox/ParentPipe.pm
index ccc0815e..2e2abb5f 100644
--- a/lib/PublicInbox/ParentPipe.pm
+++ b/lib/PublicInbox/ParentPipe.pm
@@ -1,20 +1,27 @@
  # 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;
  }
  
-sub event_step { $_[0]->{cb}->($_[0]) }
+# master process died, time to call worker_quit ourselves
+sub event_step {
+        $_[0]->close; # PublicInbox::DS::close
+        $_[0]->{cb}->();
+}
  
  1;