Kai Liu ef602f6275 Misc cleanup on performance branch
Summary:

Did some trivial stuffs:

* Add more comments;
* fix compiler's warning messages (uninitialized variables).
* etc

Test Plan:

make check
2014-01-17 14:26:29 -08:00
..
2013-11-01 14:31:35 -07:00
2013-11-01 14:31:35 -07:00
2013-12-04 16:35:48 -08:00
2013-12-04 16:35:48 -08:00
2013-11-06 14:11:52 -08:00