1 files changed, 25 insertions, 0 deletions
diff --git a/lib/PublicInbox/EOFpipe.pm b/lib/PublicInbox/EOFpipe.pm
new file mode 100644
index 00000000..77b699a2
--- /dev/null
+++ b/lib/PublicInbox/EOFpipe.pm
@@ -0,0 +1,25 @@
+# Copyright (C) all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+
+package PublicInbox::EOFpipe;
+use v5.12;
+use parent qw(PublicInbox::DS);
+use PublicInbox::Syscall qw(EPOLLIN EPOLLONESHOT $F_SETPIPE_SZ);
+
+sub new {
+        my (undef, $rd, @cb_args) = @_;
+        my $self = bless { cb_args => \@cb_args }, __PACKAGE__;
+        # 4096: page size
+        fcntl($rd, $F_SETPIPE_SZ, 4096) if $F_SETPIPE_SZ;
+        $self->SUPER::new($rd, EPOLLIN|EPOLLONESHOT);
+}
+
+sub event_step {
+        my ($self) = @_;
+        if ($self->do_read(my $buf, 1) == 0) { # auto-closed
+                my ($cb, @args) = @{delete $self->{cb_args}};
+                $cb->(@args);
+        }
+}
+
+1;