| /* |
| * Copyright (C) 2016 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 androidx.test.InstrumentationRegistry; |
| import androidx.test.filters.LargeTest; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| @RunWith(AndroidJUnit4.class) |
| @LargeTest |
| public class ParcelObtainPerfTest { |
| private static final int ITERATIONS = 1_000_000; |
| |
| @Test |
| public void timeContention_01() throws Exception { |
| timeContention(1); |
| } |
| |
| @Test |
| public void timeContention_04() throws Exception { |
| timeContention(4); |
| } |
| |
| @Test |
| public void timeContention_16() throws Exception { |
| timeContention(16); |
| } |
| |
| private static void timeContention(int numThreads) throws Exception { |
| final long start = SystemClock.elapsedRealtime(); |
| { |
| final ObtainThread[] threads = new ObtainThread[numThreads]; |
| for (int i = 0; i < numThreads; i++) { |
| final ObtainThread thread = new ObtainThread(ITERATIONS / numThreads); |
| thread.start(); |
| threads[i] = thread; |
| } |
| for (int i = 0; i < numThreads; i++) { |
| threads[i].join(); |
| } |
| } |
| final long duration = SystemClock.elapsedRealtime() - start; |
| |
| final Bundle results = new Bundle(); |
| results.putLong("duration", duration); |
| InstrumentationRegistry.getInstrumentation().sendStatus(0, results); |
| } |
| |
| public static class ObtainThread extends Thread { |
| public int iterations; |
| |
| public ObtainThread(int iterations) { |
| this.iterations = iterations; |
| } |
| |
| @Override |
| public void run() { |
| while (iterations-- > 0) { |
| final Parcel data = Parcel.obtain(); |
| final Parcel reply = Parcel.obtain(); |
| try { |
| data.writeInt(32); |
| reply.writeInt(32); |
| } finally { |
| reply.recycle(); |
| data.recycle(); |
| } |
| } |
| } |
| } |
| } |