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[GR-58468] Load lambda types in the application layer
PullRequest: graal/18883
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substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/lambda/LambdaParser.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,164 @@ | ||
| /* | ||
| * Copyright (c) 2024, 2024, Oracle and/or its affiliates. All rights reserved. | ||
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| * | ||
| * This code is free software; you can redistribute it and/or modify it | ||
| * under the terms of the GNU General Public License version 2 only, as | ||
| * published by the Free Software Foundation. Oracle designates this | ||
| * particular file as subject to the "Classpath" exception as provided | ||
| * by Oracle in the LICENSE file that accompanied this code. | ||
| * | ||
| * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| * version 2 for more details (a copy is included in the LICENSE file that | ||
| * accompanied this code). | ||
| * | ||
| * You should have received a copy of the GNU General Public License version | ||
| * 2 along with this work; if not, write to the Free Software Foundation, | ||
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| * | ||
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| * or visit www.oracle.com if you need additional information or have any | ||
| * questions. | ||
| */ | ||
| package com.oracle.svm.hosted.lambda; | ||
|
|
||
| import java.lang.reflect.Member; | ||
| import java.util.Arrays; | ||
| import java.util.stream.Stream; | ||
|
|
||
| import com.oracle.graal.pointsto.phases.NoClassInitializationPlugin; | ||
| import com.oracle.graal.pointsto.util.GraalAccess; | ||
| import com.oracle.svm.util.ClassUtil; | ||
|
|
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| import jdk.graal.compiler.debug.DebugContext; | ||
| import jdk.graal.compiler.java.BytecodeParser; | ||
| import jdk.graal.compiler.java.GraphBuilderPhase; | ||
| import jdk.graal.compiler.java.LambdaUtils; | ||
| import jdk.graal.compiler.nodes.ConstantNode; | ||
| import jdk.graal.compiler.nodes.StructuredGraph; | ||
| import jdk.graal.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration; | ||
| import jdk.graal.compiler.nodes.graphbuilderconf.IntrinsicContext; | ||
| import jdk.graal.compiler.nodes.graphbuilderconf.InvocationPlugins; | ||
| import jdk.graal.compiler.nodes.spi.CoreProviders; | ||
| import jdk.graal.compiler.options.OptionValues; | ||
| import jdk.graal.compiler.phases.OptimisticOptimizations; | ||
| import jdk.graal.compiler.phases.tiers.HighTierContext; | ||
| import jdk.graal.compiler.printer.GraalDebugHandlersFactory; | ||
| import jdk.graal.compiler.replacements.MethodHandlePlugin; | ||
| import jdk.vm.ci.meta.Constant; | ||
| import jdk.vm.ci.meta.JavaConstant; | ||
| import jdk.vm.ci.meta.ResolvedJavaField; | ||
| import jdk.vm.ci.meta.ResolvedJavaMethod; | ||
| import jdk.vm.ci.meta.ResolvedJavaType; | ||
|
|
||
| public class LambdaParser { | ||
| /** | ||
| * Create a {@link StructuredGraph} using {@link LambdaGraphBuilderPhase.LambdaBytecodeParser}, | ||
| * a simple {@link BytecodeParser}. | ||
| */ | ||
| @SuppressWarnings("try") | ||
| public static StructuredGraph createMethodGraph(ResolvedJavaMethod method, OptionValues options) { | ||
| GraphBuilderPhase lambdaParserPhase = new LambdaParser.LambdaGraphBuilderPhase(); | ||
| DebugContext.Description description = new DebugContext.Description(method, ClassUtil.getUnqualifiedName(method.getClass()) + ":" + method.getName()); | ||
| DebugContext debug = new DebugContext.Builder(options, new GraalDebugHandlersFactory(GraalAccess.getOriginalSnippetReflection())).description(description).build(); | ||
|
|
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| HighTierContext context = new HighTierContext(GraalAccess.getOriginalProviders(), null, OptimisticOptimizations.NONE); | ||
| StructuredGraph graph = new StructuredGraph.Builder(debug.getOptions(), debug) | ||
| .method(method) | ||
| .recordInlinedMethods(false) | ||
| .build(); | ||
| try (DebugContext.Scope ignored = debug.scope("ParsingToMaterializeLambdas")) { | ||
| lambdaParserPhase.apply(graph, context); | ||
| } catch (Throwable e) { | ||
| throw debug.handle(e); | ||
| } | ||
| return graph; | ||
| } | ||
|
|
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| public static Stream<? extends ResolvedJavaMethod> allExecutablesDeclaredInClass(ResolvedJavaType t) { | ||
| return Stream.concat(Stream.concat( | ||
| Arrays.stream(t.getDeclaredMethods(false)), | ||
| Arrays.stream(t.getDeclaredConstructors(false))), | ||
| t.getClassInitializer() == null ? Stream.empty() : Stream.of(t.getClassInitializer())); | ||
| } | ||
|
|
||
| /** | ||
| * Get the lambda class in the constant if it is a {@code DirectMethodHandle}, by getting the | ||
| * declaring class of the {@code member} field. | ||
| */ | ||
| public static Class<?> getLambdaClassFromConstantNode(ConstantNode constantNode) { | ||
| Constant constant = constantNode.getValue(); | ||
| Class<?> lambdaClass = getLambdaClassFromMemberField(constant); | ||
|
|
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| if (lambdaClass == null) { | ||
| return null; | ||
| } | ||
|
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| return LambdaUtils.isLambdaClass(lambdaClass) ? lambdaClass : null; | ||
| } | ||
|
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| private static Class<?> getLambdaClassFromMemberField(Constant constant) { | ||
| ResolvedJavaType constantType = GraalAccess.getOriginalProviders().getMetaAccess().lookupJavaType((JavaConstant) constant); | ||
|
|
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| if (constantType == null) { | ||
| return null; | ||
| } | ||
|
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| ResolvedJavaField[] fields = constantType.getInstanceFields(true); | ||
| ResolvedJavaField targetField = null; | ||
| for (ResolvedJavaField field : fields) { | ||
| if (field.getName().equals("member")) { | ||
| targetField = field; | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| if (targetField == null) { | ||
| return null; | ||
| } | ||
|
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| JavaConstant fieldValue = GraalAccess.getOriginalProviders().getConstantReflection().readFieldValue(targetField, (JavaConstant) constant); | ||
| Member memberField = GraalAccess.getOriginalProviders().getSnippetReflection().asObject(Member.class, fieldValue); | ||
| return memberField.getDeclaringClass(); | ||
| } | ||
|
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| static class LambdaGraphBuilderPhase extends GraphBuilderPhase { | ||
| LambdaGraphBuilderPhase() { | ||
| super(buildLambdaParserConfig()); | ||
| } | ||
|
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| LambdaGraphBuilderPhase(GraphBuilderConfiguration config) { | ||
| super(config); | ||
| } | ||
|
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| private static GraphBuilderConfiguration buildLambdaParserConfig() { | ||
| GraphBuilderConfiguration.Plugins plugins = new GraphBuilderConfiguration.Plugins(new InvocationPlugins()); | ||
| plugins.setClassInitializationPlugin(new NoClassInitializationPlugin()); | ||
| plugins.prependNodePlugin(new MethodHandlePlugin(GraalAccess.getOriginalProviders().getConstantReflection().getMethodHandleAccess(), false)); | ||
| return GraphBuilderConfiguration.getDefault(plugins).withEagerResolving(true); | ||
| } | ||
|
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| @Override | ||
| public GraphBuilderPhase copyWithConfig(GraphBuilderConfiguration config) { | ||
| return new LambdaGraphBuilderPhase(config); | ||
| } | ||
|
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| static class LambdaBytecodeParser extends BytecodeParser { | ||
| protected LambdaBytecodeParser(Instance graphBuilderInstance, StructuredGraph graph, BytecodeParser parent, ResolvedJavaMethod method, int entryBCI, IntrinsicContext intrinsicContext) { | ||
| super(graphBuilderInstance, graph, parent, method, entryBCI, intrinsicContext); | ||
| } | ||
| } | ||
|
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| @Override | ||
| protected Instance createInstance(CoreProviders providers, GraphBuilderConfiguration instanceGBConfig, OptimisticOptimizations optimisticOpts, IntrinsicContext initialIntrinsicContext) { | ||
| return new Instance(providers, instanceGBConfig, optimisticOpts, initialIntrinsicContext) { | ||
| @Override | ||
| protected BytecodeParser createBytecodeParser(StructuredGraph graph, BytecodeParser parent, ResolvedJavaMethod method, int entryBCI, IntrinsicContext intrinsicContext) { | ||
| return new LambdaBytecodeParser(this, graph, parent, method, entryBCI, intrinsicContext); | ||
| } | ||
| }; | ||
| } | ||
| } | ||
| } |
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