# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1562546787 -7200
# Node ID 7a36b7ac309bbca74ad75edd9cf86db33535ba7d
# Parent  c8c3f2eba8981ad83dcae18f4e69ebee23498f32
util.serialization: Cache default serialization instance (fixes #1389)

Most serialization uses still use the default serialize() and thus
duplicate much of the setup, which negates some of the performance
improvements of the rewrite.

diff -r c8c3f2eba898 -r 7a36b7ac309b util/serialization.lua
--- a/util/serialization.lua	Mon Jul 08 01:17:34 2019 +0200
+++ b/util/serialization.lua	Mon Jul 08 02:46:27 2019 +0200
@@ -272,10 +272,15 @@
 	return ret;
 end
 
+local default = new();
 return {
 	new = new;
 	serialize = function (x, opt)
-		return new(opt)(x);
+		if opt == nil then
+			return default(x);
+		else
+			return new(opt)(x);
+		end
 	end;
 	deserialize = deserialize;
 };