93 lines
3.1 KiB
Java
93 lines
3.1 KiB
Java
/*
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* Copyright (c) 2022, 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.java.lang;
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import java.io.FilterOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.PrintStream;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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import java.util.concurrent.TimeUnit;
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import java.util.stream.IntStream;
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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.OutputTimeUnit;
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import org.openjdk.jmh.annotations.Param;
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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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/**
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* Benchmarks for java.lang.StackTraceElement
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*/
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@State(value = Scope.Benchmark)
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@BenchmarkMode(Mode.AverageTime)
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@OutputTimeUnit(TimeUnit.NANOSECONDS)
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@Warmup(iterations = 5, time = 1)
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@Measurement(iterations = 5, time = 1)
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@Fork(3)
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public class StackTraceElementBench {
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private StackTraceElement element;
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private Throwable throwable;
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@Setup
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public void setup() {
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StackTraceElement[] elements = IntStream.range(0, 500)
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.mapToObj(i -> new StackTraceElement(
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"classloader" + i,
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"module" + i,
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"version" + i,
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"class" + i,
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"method" + i,
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"file" + i + ".java",
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i))
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.toArray(StackTraceElement[]::new);
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this.element = elements[0];
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this.throwable = new RuntimeException("benchmark") {
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@Override
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public synchronized Throwable fillInStackTrace() {
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setStackTrace(elements);
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return this;
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}
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};
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}
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@Benchmark
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public String toString() {
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return element.toString();
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}
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@Benchmark
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public String printStackTrace() {
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StringWriter sw = new StringWriter();
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throwable.printStackTrace(new PrintWriter(sw));
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return sw.toString();
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}
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}
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