Merge "Add native tracing API" into mnc-dev

native/android/Android.mk

@@ -16,6 +16,7 @@ LOCAL_SRC_FILES:= \
     obb.cpp \
     sensor.cpp \
     storage_manager.cpp \
+    trace.cpp \
 
 LOCAL_SHARED_LIBRARIES := \
     liblog \

native/android/trace.cpp

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android/trace.h>
+#include <cutils/trace.h>
+
+bool ATrace_isEnabled() {
+    return atrace_is_tag_enabled(ATRACE_TAG_APP);
+}
+
+void ATrace_beginSection(const char* sectionName) {
+    atrace_begin(ATRACE_TAG_APP, sectionName);
+}
+
+void ATrace_endSection() {
+    atrace_end(ATRACE_TAG_APP);
+}