| // Copyright (c) 2022, 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.cf.varhandle; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotSame; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assume.assumeTrue; |
| |
| import com.android.tools.r8.JdkClassFileProvider; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.TestRuntime.CfVm; |
| import com.android.tools.r8.ToolHelper; |
| import com.android.tools.r8.ToolHelper.DexVm.Version; |
| import com.android.tools.r8.examples.jdk9.VarHandle; |
| import com.android.tools.r8.graph.DexMethod; |
| import com.android.tools.r8.graph.DexString; |
| import com.android.tools.r8.references.MethodReference; |
| import com.android.tools.r8.references.Reference; |
| import com.android.tools.r8.synthesis.SyntheticItemsTestUtils; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.IntBox; |
| import com.android.tools.r8.utils.ZipUtils; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.google.common.collect.ImmutableList; |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameter; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public abstract class VarHandleDesugaringTestBase extends TestBase { |
| |
| @Parameter(0) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters() |
| .withCfRuntimesStartingFromIncluding(CfVm.JDK9) |
| // Running on 4.0.4 and 4.4.4 needs to be checked. Output seems correct, but at the |
| // same time there are VFY errors on stderr. |
| .withDexRuntimesStartingFromExcluding(Version.V4_4_4) |
| .withAllApiLevels() |
| .build(); |
| } |
| |
| protected abstract String getMainClass(); |
| |
| protected List<String> getKeepRules() { |
| return ImmutableList.of(""); |
| } |
| |
| protected abstract List<String> getJarEntries(); |
| |
| protected abstract String getExpectedOutputForReferenceImplementation(); |
| |
| protected String getExpectedOutputForDesugaringImplementation() { |
| return getExpectedOutputForReferenceImplementation(); |
| } |
| |
| protected String getExpectedOutputForArtImplementation() { |
| return getExpectedOutputForReferenceImplementation(); |
| } |
| |
| @Test |
| public void testReference() throws Throwable { |
| // The tests for weakCompareAndSet might fail on the JVM, as the tests do not account for |
| // possible spurious failures but expect it to behave like compareAndSet (which is what the |
| // desugared implementation does. |
| assumeTrue(parameters.isCfRuntime() && parameters.asCfRuntime().isNewerThanOrEqual(CfVm.JDK9)); |
| testForJvm() |
| .addProgramFiles(VarHandle.jar()) |
| .run(parameters.getRuntime(), getMainClass()) |
| .assertSuccessWithOutput(getExpectedOutputForReferenceImplementation()); |
| } |
| |
| private List<byte[]> getProgramClassFileData() { |
| return getJarEntries().stream() |
| .map( |
| entry -> { |
| try { |
| return ZipUtils.readSingleEntry(VarHandle.jar(), entry); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| }) |
| .collect(Collectors.toList()); |
| } |
| |
| private boolean willDesugarVarHandle() { |
| return parameters.isDexRuntime() && parameters.getApiLevel().isLessThan(AndroidApiLevel.T); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| IntBox unsafeCompareAndSwapInt = new IntBox(); |
| IntBox unsafeCompareAndSwapLong = new IntBox(); |
| IntBox unsafeCompareAndSwapObject = new IntBox(); |
| DexString compareAndSwapInt = inspector.getFactory().createString("compareAndSwapInt"); |
| DexString compareAndSwapLong = inspector.getFactory().createString("compareAndSwapLong"); |
| DexString compareAndSwapObject = inspector.getFactory().createString("compareAndSwapObject"); |
| // Right now we only expect one backport coming out of DesugarVarHandle - the backport with |
| // forwarding of Unsafe.compareAndSwapObject. |
| MethodReference firstBackportFromDesugarVarHandle = |
| SyntheticItemsTestUtils.syntheticBackportWithForwardingMethod( |
| Reference.classFromDescriptor("Lcom/android/tools/r8/DesugarVarHandle;"), |
| 0, |
| Reference.method( |
| Reference.classFromDescriptor("Lsun/misc/Unsafe;"), |
| "compareAndSwapObject", |
| ImmutableList.of( |
| Reference.typeFromDescriptor("Ljava/lang/Object;"), |
| Reference.LONG, |
| Reference.typeFromDescriptor("Ljava/lang/Object;"), |
| Reference.typeFromDescriptor("Ljava/lang/Object;")), |
| Reference.BOOL)); |
| inspector.forAllClasses( |
| clazz -> { |
| clazz.forAllMethods( |
| method -> { |
| method |
| .instructions() |
| .forEach( |
| instruction -> { |
| if (instruction.isInvoke()) { |
| DexMethod target = instruction.getMethod(); |
| if (target.getHolderType() == inspector.getFactory().unsafeType) { |
| if (target.getName() == compareAndSwapInt |
| || target.getName() == compareAndSwapLong) { |
| // All compareAndSwapInt and compareAndSwapLong stay on |
| // DesugarVarHandle. |
| assertSame( |
| clazz.getDexProgramClass().getType(), |
| inspector.getFactory().desugarVarHandleType); |
| unsafeCompareAndSwapInt.incrementIf( |
| target.getName() == compareAndSwapInt); |
| unsafeCompareAndSwapLong.incrementIf( |
| target.getName() == compareAndSwapLong); |
| } else if (target.getName() == compareAndSwapObject) { |
| // compareAndSwapObject is not on DesugarVarHandle - it must be |
| // backported. |
| assertNotSame( |
| clazz.getDexProgramClass().getType(), |
| inspector.getFactory().desugarVarHandleType); |
| assertEquals( |
| clazz.getFinalReference(), |
| firstBackportFromDesugarVarHandle.getHolderClass()); |
| assertEquals(1, clazz.allMethods().size()); |
| assertEquals( |
| firstBackportFromDesugarVarHandle, |
| clazz.allMethods().iterator().next().getFinalReference()); |
| unsafeCompareAndSwapObject.increment(); |
| } |
| } |
| } |
| }); |
| }); |
| }); |
| if (willDesugarVarHandle()) { |
| assertEquals(8, unsafeCompareAndSwapInt.get()); |
| assertEquals(10, unsafeCompareAndSwapLong.get()); |
| assertEquals(1, unsafeCompareAndSwapObject.get()); |
| } else { |
| assertEquals(0, unsafeCompareAndSwapInt.get()); |
| assertEquals(0, unsafeCompareAndSwapLong.get()); |
| assertEquals(0, unsafeCompareAndSwapObject.get()); |
| } |
| } |
| |
| // TODO(b/247076137: Also turn on VarHandle desugaring for R8 tests. |
| @Test |
| public void testD8() throws Throwable { |
| assumeTrue(parameters.isDexRuntime()); |
| testForD8(parameters.getBackend()) |
| .addProgramClassFileData(getProgramClassFileData()) |
| .setMinApi(parameters.getApiLevel()) |
| .addOptionsModification(options -> options.enableVarHandleDesugaring = true) |
| .run(parameters.getRuntime(), getMainClass()) |
| .applyIf( |
| parameters.isDexRuntime() |
| && parameters.asDexRuntime().getVersion().isOlderThanOrEqual(Version.V4_4_4), |
| // TODO(b/247076137): Running on 4.0.4 and 4.4.4 needs to be checked. Output seems |
| // correct, but at the same time there are VFY errors on stderr. |
| r -> r.assertFailureWithErrorThatThrows(NoSuchFieldException.class), |
| r -> |
| r.assertSuccessWithOutput( |
| parameters.getApiLevel().isGreaterThanOrEqualTo(AndroidApiLevel.T) |
| && parameters.getDexRuntimeVersion().isNewerThanOrEqual(Version.V13_0_0) |
| ? getExpectedOutputForArtImplementation() |
| : getExpectedOutputForDesugaringImplementation())) |
| .inspect(this::inspect); |
| } |
| |
| @Test |
| public void testR8() throws Throwable { |
| testForR8(parameters.getBackend()) |
| .applyIf( |
| parameters.isDexRuntime(), |
| // Use android.jar from Android T to get the VarHandle type. |
| b -> b.addLibraryFiles(ToolHelper.getAndroidJar(AndroidApiLevel.T)), |
| // Use system JDK to have references types including StringConcatFactory. |
| b -> b.addLibraryProvider(JdkClassFileProvider.fromSystemJdk())) |
| .addProgramClassFileData(getProgramClassFileData()) |
| .addOptionsModification(options -> options.enableVarHandleDesugaring = true) |
| .setMinApi(parameters.getApiLevel()) |
| .addKeepMainRule(getMainClass()) |
| .addKeepRules(getKeepRules()) |
| .run(parameters.getRuntime(), getMainClass()) |
| .applyIf( |
| parameters.isDexRuntime() |
| && parameters.asDexRuntime().getVersion().isOlderThanOrEqual(Version.V4_4_4), |
| // TODO(b/247076137): Running on 4.0.4 and 4.4.4 needs to be checked. Output seems |
| // correct, but at the same time there are VFY errors on stderr. |
| r -> r.assertFailureWithErrorThatThrows(NoSuchFieldException.class), |
| r -> |
| r.assertSuccessWithOutput( |
| parameters.isDexRuntime() |
| && parameters.getApiLevel().isGreaterThanOrEqualTo(AndroidApiLevel.T) |
| && parameters.getDexRuntimeVersion().isNewerThanOrEqual(Version.V13_0_0) |
| ? getExpectedOutputForArtImplementation() |
| : (parameters.isDexRuntime() |
| ? getExpectedOutputForDesugaringImplementation() |
| : getExpectedOutputForReferenceImplementation()))); |
| } |
| } |
