From 67c04c8744bff60c39ff99603d2e28bf62ff2282 Mon Sep 17 00:00:00 2001 From: "sandholm@chromium.org" Date: Mon, 10 May 2010 09:27:37 +0000 Subject: [PATCH] One element cache for localtime. Review URL: http://codereview.chromium.org/2023005 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4628 ce2b1a6d-e550-0410-aec6-3dcde31c8c00 --- src/date.js | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/src/date.js b/src/date.js index b9e19d6..e780cb8 100644 --- a/src/date.js +++ b/src/date.js @@ -238,7 +238,15 @@ function LocalTime(time) { return time + DaylightSavingsOffset(time) + local_time_offset; } + +var ltcache = { + key: null, + val: null +}; + function LocalTimeNoCheck(time) { + var ltc = ltcache; + if (%_ObjectEquals(time, ltc.key)) return ltc.val; if (time < -MAX_TIME_MS || time > MAX_TIME_MS) { return $NaN; } @@ -252,7 +260,8 @@ function LocalTimeNoCheck(time) { } else { var dst_offset = DaylightSavingsOffset(time); } - return time + local_time_offset + dst_offset; + ltc.key = time; + return (ltc.val = time + local_time_offset + dst_offset); } -- 2.7.4