extindex: speed up Xapian cleanup in --gc

Avoiding repeated SQL statements brings --gc down to 2-3 minutes
from around 10.  We'll also add some checkpoints around over and
xref3 cleanups.

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/PublicInbox/SearchIdx.pm b/lib/PublicInbox/SearchIdx.pm
index 78db329d..bebe904b 100644
--- a/lib/PublicInbox/SearchIdx.pm
+++ b/lib/PublicInbox/SearchIdx.pm
@@ -650,8 +650,11 @@ sub xdb_remove_quiet {
         begin_txn_lazy($self);
         my $xdb = $self->{xdb} // die 'BUG: missing {xdb}';
         eval { $xdb->delete_document($docid) };
+        ++$self->{-quiet_rm} unless $@;
 }
 
+sub nr_quiet_rm { delete($_[0]->{-quiet_rm}) // 0 }
+
 sub index_git_blob_id {
         my ($doc, $pfx, $objid) = @_;