russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
94 lines
3.2 KiB
Java
94 lines
3.2 KiB
Java
/*
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* Copyright (c) 2022, 2025, 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.lang.reflect.AccessFlag;
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import java.lang.classfile.ClassElement;
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import java.lang.classfile.ClassModel;
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import java.lang.classfile.ClassFile;
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import java.lang.classfile.FieldModel;
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import org.openjdk.jmh.annotations.*;
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import org.openjdk.jmh.infra.Blackhole;
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public class ReadMetadata extends AbstractCorpusBenchmark {
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@Benchmark
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@BenchmarkMode(Mode.Throughput)
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public void jdkReadName(Blackhole bh) {
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var cc = ClassFile.of();
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for (byte[] bytes : classes) {
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bh.consume(cc.parse(bytes).thisClass().asInternalName());
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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 jdkReadMemberNames(Blackhole bh) {
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var cc = ClassFile.of();
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for (byte[] bytes : classes) {
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var cm = cc.parse(bytes);
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bh.consume(cm.thisClass().asInternalName());
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for (var f : cm.fields()) {
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bh.consume(f.fieldName().stringValue());
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bh.consume(f.fieldType().stringValue());
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}
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for (var m : cm.methods()) {
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bh.consume(m.methodName().stringValue());
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bh.consume(m.methodType().stringValue());
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}
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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 jdkTreeCountFields(Blackhole bh) {
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var cc = ClassFile.of();
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for (byte[] bytes : classes) {
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int count = 0;
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ClassModel cm = cc.parse(bytes);
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for (FieldModel fm : cm.fields())
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if (!fm.flags().has(AccessFlag.PUBLIC)) {
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++count;
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}
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bh.consume(count);
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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 jdkCountFields(Blackhole bh) {
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var cc = ClassFile.of();
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for (byte[] bytes : classes) {
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int count = 0;
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ClassModel cm = cc.parse(bytes);
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for (ClassElement ce : cm) {
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if (ce instanceof FieldModel fm) {
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if (!fm.flags().has(AccessFlag.PUBLIC)) {
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++count;
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}
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}
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}
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bh.consume(count);
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}
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}
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}
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