117 lines
4.0 KiB
Java
117 lines
4.0 KiB
Java
/*
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* Copyright (c) 2023, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.openjdk.bench.jdk.classfile;
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import java.io.IOException;
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import java.net.URI;
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import java.nio.file.FileSystems;
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import java.nio.file.Files;
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import java.lang.classfile.ClassModel;
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import java.lang.classfile.ClassTransform;
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import java.lang.classfile.ClassFile;
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import java.lang.classfile.CodeBuilder;
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import java.lang.classfile.CodeElement;
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import java.lang.classfile.CodeTransform;
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import java.lang.classfile.CompoundElement;
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import org.openjdk.jmh.annotations.Benchmark;
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import org.openjdk.jmh.annotations.BenchmarkMode;
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import org.openjdk.jmh.annotations.Fork;
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import org.openjdk.jmh.annotations.Measurement;
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import org.openjdk.jmh.annotations.Mode;
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import org.openjdk.jmh.annotations.Scope;
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import org.openjdk.jmh.annotations.Setup;
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import org.openjdk.jmh.annotations.State;
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import org.openjdk.jmh.annotations.Warmup;
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import org.openjdk.jmh.infra.Blackhole;
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/**
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* ClassFileBenchmark
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*/
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@Warmup(iterations = 3)
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@Measurement(iterations = 5)
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@Fork(value = 1, jvmArgs = {
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"--enable-preview"})
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@State(Scope.Benchmark)
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public class ClassfileBenchmark {
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private byte[] benchBytes;
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private ClassModel benchModel;
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private ClassFile sharedCP, newCP;
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private ClassTransform threeLevelNoop;
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private ClassTransform addNOP;
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@Setup
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public void setup() throws IOException {
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benchBytes = Files.readAllBytes(
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FileSystems.getFileSystem(URI.create("jrt:/"))
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.getPath("modules/java.base/java/util/AbstractMap.class"));
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sharedCP = ClassFile.of();
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newCP = ClassFile.of(ClassFile.ConstantPoolSharingOption.NEW_POOL);
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benchModel = ClassFile.of().parse(benchBytes);
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threeLevelNoop = ClassTransform.transformingMethodBodies(CodeTransform.ACCEPT_ALL);
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addNOP = ClassTransform.transformingMethodBodies(new CodeTransform() {
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@Override
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public void atStart(CodeBuilder cob) {
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cob.nop();
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}
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@Override
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public void accept(CodeBuilder cob, CodeElement coe) {
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cob.with(coe);
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}
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});
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//expand the model
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consume(benchModel);
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}
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@Benchmark
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@BenchmarkMode(Mode.Throughput)
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public void parse(Blackhole bh) {
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consume(sharedCP.parse(benchBytes));
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}
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private static void consume(CompoundElement<?> parent) {
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parent.forEach(e -> {
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if (e instanceof CompoundElement<?> ce) consume(ce);
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});
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}
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@Benchmark
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@BenchmarkMode(Mode.Throughput)
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public void transformWithSharedCP(Blackhole bh) {
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bh.consume(sharedCP.transformClass(benchModel, threeLevelNoop));
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}
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@Benchmark
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@BenchmarkMode(Mode.Throughput)
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public void transformWithNewCP(Blackhole bh) {
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bh.consume(newCP.transformClass(benchModel, threeLevelNoop));
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}
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@Benchmark
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@BenchmarkMode(Mode.Throughput)
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public void transformWithAddedNOP(Blackhole bh) {
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bh.consume(sharedCP.transformClass(benchModel, addNOP));
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}
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}
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