| // Copyright (c) 2019, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.ir.optimize.inliner.sync; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.CoreMatchers.not; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.google.common.collect.ImmutableList; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class InlinerMonitorEnterValuesThresholdTest extends TestBase { |
| |
| private final TestParameters parameters; |
| private final int threshold; |
| |
| @Parameters(name = "{0}, threshold: {1}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| getTestParameters().withAllRuntimesAndApiLevels().build(), ImmutableList.of(2, 3)); |
| } |
| |
| public InlinerMonitorEnterValuesThresholdTest(TestParameters parameters, int threshold) { |
| this.parameters = parameters; |
| this.threshold = threshold; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(TestClass.class) |
| .addKeepMainRule(TestClass.class) |
| .addOptionsModification(options -> options.inliningMonitorEnterValuesAllowance = threshold) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(this::inspect) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("Hello world!"); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| ClassSubject classSubject = inspector.clazz(TestClass.class); |
| assertThat(classSubject, isPresent()); |
| assertThat(classSubject.mainMethod(), isPresent()); |
| assertThat(classSubject.uniqueMethodWithName("m1"), not(isPresent())); |
| assertThat(classSubject.uniqueMethodWithName("m2"), not(isPresent())); |
| if (threshold == 2) { |
| assertThat(classSubject.uniqueMethodWithName("m3"), isPresent()); |
| } else { |
| assert threshold == 3; |
| assertThat(classSubject.uniqueMethodWithName("m3"), not(isPresent())); |
| } |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| synchronized (TestClass.class) { |
| // Method m1() contributes with 1 extra monitor-enter value and should therefore always be |
| // inlined since the threshold is 2 or 3. |
| m1(); |
| |
| // Method m2() contributes with no extra monitor-enter values since it uses TestClass.class |
| // as a lock, which is already used as a lock in the enclosing class. Therefore, m2() should |
| // always be inlined. |
| m2(); |
| |
| // Method m3() contributes with 1 extra monitor-enter value and should therefore only be |
| // inlined if the threshold is 3. |
| m3(); |
| } |
| } |
| |
| private static void m1() { |
| synchronized (new Object()) { |
| System.out.print("Hello"); |
| } |
| } |
| |
| private static synchronized void m2() { |
| System.out.print(" world"); |
| } |
| |
| private static void m3() { |
| synchronized (new Object()) { |
| System.out.println("!"); |
| } |
| } |
| } |
| } |