From b00e85c55392ddf0593b681d7187e4c4e158568e Mon Sep 17 00:00:00 2001
From: minima <minima>
Date: Tue, 29 Oct 2002 15:35:29 +0000
Subject: [PATCH] flush lru cache on reload

---
 Changes        | 1 +
 perl/Chain.pm  | 7 +++++++
 perl/Prefix.pm | 7 ++++---
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/Changes b/Changes
index 9418f1f6..62800dd0 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,7 @@
 1. make sh/log et al a bit more efficient.
 2. fix dupe message in dx.
 3. update cty.dat to the latest, add k8T, K8O to KH8 and TX5BTY to FO/A
+4. clear cache on reload of prefixes
 25Oct02=======================================================================
 1. remove the dupefile automatically if it becomes corrupted
 2. instrument the startup slightly more
diff --git a/perl/Chain.pm b/perl/Chain.pm
index c4fa99a7..c065d17a 100644
--- a/perl/Chain.pm
+++ b/perl/Chain.pm
@@ -156,6 +156,13 @@ sub count
 	return $count;
 }
 
+sub close
+{
+	my $base = shift;
+	$base->flush;
+	$base->[PREV] = $base->[NEXT] = undef;
+}
+
 1;
 __END__
 # Below is the stub of documentation for your module. You better edit it!
diff --git a/perl/Prefix.pm b/perl/Prefix.pm
index 5733ff02..6f1c1f29 100644
--- a/perl/Prefix.pm
+++ b/perl/Prefix.pm
@@ -31,9 +31,7 @@ $db = undef;					# the DB_File handle
 %prefix_loc = ();				# the meat of the info
 %pre = ();						# the prefix list
 $hits = $misses = $matchtotal = 1;		# cache stats
-$lrusize = 2000;				# size of prefix LRU cache
-
-$lru = LRU->newbase('Prefix', $lrusize);
+$lrusize = 1000;				# size of prefix LRU cache
 
 sub load
 {
@@ -43,6 +41,8 @@ sub load
 		untie %pre;
 		%pre = ();
 		%prefix_loc = ();
+		$lru->close if $lru;
+		undef $lru;
 	}
 
 	# tie the main prefix database
@@ -50,6 +50,7 @@ sub load
 	my $out = $@ if $@;
 	do "$main::data/prefix_data.pl" if !$out;
 	$out = $@ if $@;
+	$lru = LRU->newbase('Prefix', $lrusize);
 
  	return $out;
 }
-- 
2.34.1