| /* |
| * Copyright 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.libcore; |
| |
| import android.perftests.utils.BenchmarkState; |
| import android.perftests.utils.PerfStatusReporter; |
| import android.test.suitebuilder.annotation.LargeTest; |
| |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| /** Compares various kinds of method invocation. */ |
| @RunWith(AndroidJUnit4.class) |
| @LargeTest |
| public class MethodInvocationPerfTest { |
| @Rule public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter(); |
| |
| interface I { |
| void emptyInterface(); |
| } |
| |
| static class C implements I { |
| private int mField; |
| |
| private int getField() { |
| return mField; |
| } |
| |
| public void timeInternalGetter(BenchmarkState state) { |
| int result = 0; |
| while (state.keepRunning()) { |
| result = getField(); |
| } |
| } |
| |
| public void timeInternalFieldAccess(BenchmarkState state) { |
| int result = 0; |
| while (state.keepRunning()) { |
| result = mField; |
| } |
| } |
| |
| public static void emptyStatic() {} |
| |
| public void emptyVirtual() {} |
| |
| public void emptyInterface() {} |
| } |
| |
| public void timeInternalGetter() { |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| new C().timeInternalGetter(state); |
| } |
| |
| public void timeInternalFieldAccess() { |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| new C().timeInternalFieldAccess(state); |
| } |
| |
| // Test an intrinsic. |
| @Test |
| public void timeStringLength() { |
| int result = 0; |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| result = "hello, world!".length(); |
| } |
| } |
| |
| @Test |
| public void timeEmptyStatic() { |
| C c = new C(); |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| c.emptyStatic(); |
| } |
| } |
| |
| @Test |
| public void timeEmptyVirtual() { |
| C c = new C(); |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| c.emptyVirtual(); |
| } |
| } |
| |
| @Test |
| public void timeEmptyInterface() { |
| I c = new C(); |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| c.emptyInterface(); |
| } |
| } |
| |
| public static class Inner { |
| private int mI; |
| |
| private void privateMethod() { |
| ++mI; |
| } |
| |
| protected void protectedMethod() { |
| ++mI; |
| } |
| |
| public void publicMethod() { |
| ++mI; |
| } |
| |
| void packageMethod() { |
| ++mI; |
| } |
| |
| final void finalPackageMethod() { |
| ++mI; |
| } |
| } |
| |
| @Test |
| public void timePrivateInnerPublicMethod() { |
| Inner inner = new Inner(); |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| inner.publicMethod(); |
| } |
| } |
| |
| @Test |
| public void timePrivateInnerProtectedMethod() { |
| Inner inner = new Inner(); |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| inner.protectedMethod(); |
| } |
| } |
| |
| @Test |
| public void timePrivateInnerPrivateMethod() { |
| Inner inner = new Inner(); |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| inner.privateMethod(); |
| } |
| } |
| |
| @Test |
| public void timePrivateInnerPackageMethod() { |
| Inner inner = new Inner(); |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| inner.packageMethod(); |
| } |
| } |
| |
| @Test |
| public void timePrivateInnerFinalPackageMethod() { |
| Inner inner = new Inner(); |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| inner.finalPackageMethod(); |
| } |
| } |
| } |