Yabin Cui b8320b8021 Don't abort when failed to write tracing message.
Also make the code thread-safe with lock.

Bug: 20666100
Change-Id: I0f331a617b75280f36179c187418450230d713ef
(cherry picked from commit 166112531558a1d4ea179c29147f27db7045db22)
2015-07-23 12:24:42 -07:00
..
2015-06-04 14:51:26 -07:00
2015-06-04 14:51:26 -07:00
2015-06-30 16:21:34 +01:00
2015-06-16 11:08:01 -07:00
2015-05-08 09:36:03 -07:00