1 files changed, 42 insertions, 0 deletions
diff --git a/src/com/android/tv/perf/StartupMeasure.java b/src/com/android/tv/perf/StartupMeasure.java
new file mode 100644
index 00000000..5cf183ca
--- /dev/null
+++ b/src/com/android/tv/perf/StartupMeasure.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+package com.android.tv.perf;
+
+import android.app.Activity;
+import android.app.Application;
+
+/**
+ * Measures App startup. This interface is lightweight to help measure both cold and warm startup
+ * latency. Implementations must not throw any Exception.
+ */
+public interface StartupMeasure {
+
+    /** To be be placed as the first static block in the app's Application class. */
+    void onAppClassLoaded();
+
+    /**
+     * To be placed in your {@link Application#onCreate} to let Performance Monitoring know when
+     * this happen.
+     */
+    void onAppCreate(Application application);
+
+    /**
+     * To be placed in an initialization block of your {@link Activity} to let Performance
+     * Monitoring know when this activity is instantiated. Please note that this initialization
+     * block should be before other initialization blocks (if any) in your activity class.
+     */
+    void onActivityInit();
+}