From 94ae705673cb03045a109041eec9a6704b8a735b Mon Sep 17 00:00:00 2001
From: Eric Wong <e@yhbt.net>
Date: Mon, 31 Aug 2020 04:41:34 +0000
Subject: watch: avoid unnecessary spawning on spam removals

This should further mitigate lock contention problems
when -watch is configured to watch on a Maildir for spam
while performing a large NNTP import.

There is now a small risk a message won't get removed because if
it's in the current (uncommitted) fast-import batch, but
unlikely given the batch size is now only 10 messages.

If a that small window is hit, flipping the \Seen flag
(e.g. marking it unread, and then read again) will trigger
another removal attempt via IMAP or Maildir.
---
 lib/PublicInbox/Import.pm | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'lib/PublicInbox/Import.pm')

diff --git a/lib/PublicInbox/Import.pm b/lib/PublicInbox/Import.pm
index 700b4026..ee5ca2ea 100644
--- a/lib/PublicInbox/Import.pm
+++ b/lib/PublicInbox/Import.pm
@@ -461,6 +461,9 @@ sub init_bare {
 	}
 }
 
+# true if locked and active
+sub active { !!$_[0]->{out} }
+
 sub done {
 	my ($self) = @_;
 	my $w = delete $self->{out} or return;
-- 
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