commit a09fe118b1a5eb876ddaa2620965c4a8fb8b007c
author Brigid Smith <brigidsmith@google.com> Mon Jul 21 15:38:06 2014 -0700
committer Elliott Hughes <enh@google.com> Tue Jul 29 09:41:44 2014 -0700
tree f78839671bc7135e47ef11b9c9c0dcebbdf46463
parent 1a5db57d5a0f633a83f20e667a4698757a63413e

Added a bionic systrace class and tracing to pthread_mutex.cpp.

bionic_systrace.h contains an implementation of tracing that
can be used with systrace.py and its associated viewer.  pthread_mutex
now uses this tracing to track pthread_mutex contention, which can be
enabled by using the "bionic" command line option to systrace.

Bug: 15116468

(cherry picked from commit a406ee6d5f616192e9a13afad6ac6a9969814fc1)

Change-Id: Ic98fc303689fe9384974150d0d258c50806a55e4

libc/Android.mk

diff --git a/libc/Android.mk b/libc/Android.mk
index 1fb5e84..0487a8f 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -94,6 +94,7 @@
     bionic/access.cpp \
     bionic/assert.cpp \
     bionic/atof.cpp \
+    bionic/bionic_systrace.cpp \
     bionic/bionic_time_conversions.cpp \
     bionic/brk.cpp \
     bionic/c16rtomb.cpp \