Add sampling profiler
This adds a sampling profiler thread that runs every so often, gathering
profiling data and writing the results to a file in /data/data (specific to
app running). The intention is to use these files as input to the compiler
so that it can determine the best methods to compile.
Bug: 11539952
Change-Id: I0bfbb4146fb7966673c792f017ffac8107b6272d
diff --git a/runtime/locks.cc b/runtime/locks.cc
index 51a40c3..5b462a1 100644
--- a/runtime/locks.cc
+++ b/runtime/locks.cc
@@ -30,6 +30,7 @@
Mutex* Locks::thread_list_lock_ = NULL;
Mutex* Locks::thread_suspend_count_lock_ = NULL;
Mutex* Locks::trace_lock_ = NULL;
+Mutex* Locks::profiler_lock_ = NULL;
Mutex* Locks::unexpected_signal_lock_ = NULL;
void Locks::Init() {
@@ -44,6 +45,7 @@
DCHECK(thread_list_lock_ != NULL);
DCHECK(thread_suspend_count_lock_ != NULL);
DCHECK(trace_lock_ != NULL);
+ DCHECK(profiler_lock_ != NULL);
DCHECK(unexpected_signal_lock_ != NULL);
} else {
logging_lock_ = new Mutex("logging lock", kLoggingLock, true);
@@ -66,6 +68,8 @@
thread_suspend_count_lock_ = new Mutex("thread suspend count lock", kThreadSuspendCountLock);
DCHECK(trace_lock_ == NULL);
trace_lock_ = new Mutex("trace lock", kTraceLock);
+ DCHECK(profiler_lock_ == NULL);
+ profiler_lock_ = new Mutex("profiler lock", kProfilerLock);
DCHECK(unexpected_signal_lock_ == NULL);
unexpected_signal_lock_ = new Mutex("unexpected signal lock", kUnexpectedSignalLock, true);
}