Add perf tests for LooperStats
Test: n/a
Change-Id: I97e290398ca67d3fda0ffeae723c2cb2d0bc10f3
diff --git a/apct-tests/perftests/core/src/android/os/LooperStatsPerfTest.java b/apct-tests/perftests/core/src/android/os/LooperStatsPerfTest.java
new file mode 100644
index 0000000..0f880b7
--- /dev/null
+++ b/apct-tests/perftests/core/src/android/os/LooperStatsPerfTest.java
@@ -0,0 +1,96 @@
+/*
+ * 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 android.os;
+
+
+import android.perftests.utils.BenchmarkState;
+import android.perftests.utils.PerfStatusReporter;
+import android.support.test.filters.LargeTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import com.android.internal.os.CachedDeviceState;
+import com.android.internal.os.LooperStats;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+
+/**
+ * Performance tests for {@link LooperStats}.
+ */
+@RunWith(AndroidJUnit4.class)
+@LargeTest
+public class LooperStatsPerfTest {
+ private static final int DISTINCT_MESSAGE_COUNT = 1000;
+
+ @Rule
+ public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();
+ private LooperStats mStats;
+ private CachedDeviceState mDeviceState;
+ private HandlerThread mThread;
+ private Message[] mMessages = new Message[DISTINCT_MESSAGE_COUNT];
+
+ @Before
+ public void setUp() {
+ mStats = new LooperStats(1, DISTINCT_MESSAGE_COUNT - 1);
+ mDeviceState = new CachedDeviceState(false, false);
+ mStats.setDeviceState(mDeviceState.getReadonlyClient());
+ // The tests are all single-threaded. HandlerThread is created to allow creating Handlers.
+ mThread = new HandlerThread("UnusedThread");
+ mThread.start();
+ for (int i = 0; i < DISTINCT_MESSAGE_COUNT; i++) {
+ mMessages[i] = mThread.getThreadHandler().obtainMessage(i);
+ }
+ }
+
+ @After
+ public void tearDown() {
+ mThread.quit();
+ }
+
+ @Test
+ public void timeHundredPercentSampling() {
+ mStats.setSamplingInterval(1);
+ runScenario();
+ }
+
+ @Test
+ public void timeOnePercentSampling() {
+ mStats.setSamplingInterval(100);
+ runScenario();
+ }
+
+ @Test
+ public void timeCollectionDisabled() {
+ // We do not collect data on charger.
+ mDeviceState.setCharging(true);
+ runScenario();
+ }
+
+ private void runScenario() {
+ final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
+ while (state.keepRunning()) {
+ for (int i = 0; i < DISTINCT_MESSAGE_COUNT; i++) {
+ Object token = mStats.messageDispatchStarting();
+ mStats.messageDispatched(token, mMessages[i]);
+ }
+ }
+ }
+}