| /* |
| * 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 static org.junit.Assert.assertNotNull; |
| |
| import android.perftests.utils.BenchmarkState; |
| import android.perftests.utils.PerfStatusReporter; |
| |
| import androidx.test.filters.LargeTest; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import com.android.internal.os.KernelCpuThreadReader; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| /** |
| * Performance tests collecting per-thread CPU data. |
| */ |
| @RunWith(AndroidJUnit4.class) |
| @LargeTest |
| public class KernelCpuThreadReaderPerfTest { |
| @Rule |
| public final PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter(); |
| |
| private final KernelCpuThreadReader mKernelCpuThreadReader = |
| KernelCpuThreadReader.create(8, uid -> 1000 <= uid && uid < 2000, 0); |
| |
| @Test |
| public void timeReadCurrentProcessCpuUsage() { |
| final BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| assertNotNull(mKernelCpuThreadReader); |
| while (state.keepRunning()) { |
| this.mKernelCpuThreadReader.getCurrentProcessCpuUsage(); |
| } |
| } |
| } |