tree c10491cebcf0b69c99aa0e8ed56611a50d0080b4
parent bf0cf4e22d594db03c1dcef57fd18d3ae038eefb
author Mark Salyzyn <salyzyn@google.com> 1476109662 -0700
committer Mark Salyzyn <salyzyn@google.com> 1476395022 +0000

liblog: __android_log_pmsg_file_write() cleanup

__android_log_pmsg_file_write() will open /dev/pmsg0 if not
already, and will close it if we opened it.

Added atomic access to the android_log_context as insurance.

Fortify and correct pmsg tests.

Test: gTest liblog-unit-tests --gtest_filter=liblog.__android_log_pmsg_file_*
Bug: 31958686
Change-Id: I2cf6f971b6968938f471fda67367efe20dae3004