workaround Mail::Thread memory leak

[public-inbox.git] / lib / PublicInbox / Thread.pm

diff --git a/lib/PublicInbox/Thread.pm b/lib/PublicInbox/Thread.pm
new file mode 100644 (file)
index 0000000..a2553da
--- /dev/null
+++ b/lib/PublicInbox/Thread.pm
@@ -0,0 +1,19 @@
+# subclass Mail::Thread and use this to workaround a memory leak
+# Based on the patch in: https://rt.cpan.org/Public/Bug/Display.html?id=22817
+# License differs from the rest of public-inbox (but is compatible):
+# This library is free software; you can redistribute it and/or modify
+# it under the same terms as Perl itself.
+package PublicInbox::Thread;
+use strict;
+use warnings;
+use base qw(Mail::Thread);
+sub _container_class { 'PublicInbox::Thread::Container' }
+
+package PublicInbox::Thread::Container;
+use strict;
+use warnings;
+use base qw(Mail::Thread::Container);
+use Scalar::Util qw(weaken);
+sub parent { @_ == 2 ? weaken($_[0]->{parent} = $_[1]) : $_[0]->{parent} }
+
+1;