| commit | 9820e5b27a8ac4ea426f8e3cddf06445a9e02840 | [log] [tgz] |
|---|---|---|
| author | Yi Kong <yikong@google.com> | Tue Dec 08 13:57:12 2015 +0000 |
| committer | Yi Kong <yikong@google.com> | Wed Dec 09 18:22:13 2015 +0000 |
| tree | 7c411b8abd435011f4bc60deacc3879c37da6638 | |
| parent | 63ef777f7504c991999f58266c0385e87ccd2d55 [diff] |
Rewrite util.format for better performance
OpenJDK uses regular expression to parse the format specifier, which
is expensive both to compile and to execute. Rewriting to manually
parse the specifier reduces formatter benchmark execution time by 45%.
=== Angler a57@1.4GHz ===
benchmark Orig Mod
_Formatter_large 69300 37402
_Formatter_medium 70116 39899
_Formatter_small 68791 37501
Bug: 25887112
Change-Id: I71a94d81c8d8228696c4ca02e60d58552886eaae