142 lines
3.8 KiB
Java
142 lines
3.8 KiB
Java
/*
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* Copyright (c) 2014, 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.vm.lang;
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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.Scope;
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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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import java.util.concurrent.TimeUnit;
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/**
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* Tests throwing exceptions.
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*/
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@BenchmarkMode(Mode.AverageTime)
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@OutputTimeUnit(TimeUnit.NANOSECONDS)
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@State(Scope.Thread)
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@Warmup(iterations = 4, time = 2)
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@Measurement(iterations = 4, time = 2)
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@Fork(value = 3)
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public class Throw {
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public static boolean alwaysTrue = true;
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private static Object nullObject = null;
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public Object useObject = new Object();
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@Benchmark
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public void throwSyncException(Blackhole bh) {
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try {
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throwingMethod();
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} catch (Exception ex) {
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bh.consume(useObject);
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}
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}
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@Benchmark
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public void throwASyncException(Blackhole bh) {
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try {
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throwNullpointer();
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} catch (Exception ex) {
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bh.consume(useObject);
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}
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}
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@Benchmark
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public void throwSyncExceptionUseException(Blackhole bh) {
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try {
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throwingMethod();
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} catch (Exception ex) {
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bh.consume(ex);
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}
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}
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@Benchmark
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public void throwSyncExceptionUseMessage(Blackhole bh) {
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try {
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throwingMethod();
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} catch (Exception ex) {
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bh.consume(ex.getMessage());
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}
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}
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@Benchmark
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public void throwSyncExceptionUseStacktrace(Blackhole bh) {
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try {
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throwingMethod();
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} catch (Exception ex) {
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bh.consume(ex.getStackTrace());
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}
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}
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@Benchmark
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public void throwWith16Frames(Blackhole bh) {
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try {
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throwingMethod(16);
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} catch (Exception ex) {
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bh.consume(useObject);
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}
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}
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@Benchmark
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public void throwWith32Frames(Blackhole bh) {
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try {
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throwingMethod(32);
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} catch (Exception ex) {
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bh.consume(useObject);
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}
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}
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@Benchmark
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public void throwWith64Frames(Blackhole bh) {
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try {
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throwingMethod(64);
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} catch (Exception ex) {
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bh.consume(useObject);
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}
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}
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public void throwingMethod() throws Exception {
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if (alwaysTrue) {
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throw new Exception();
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}
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}
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public void throwingMethod(int i) throws Exception {
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if (i == 0) {
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throw new Exception();
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}
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throwingMethod(i - 1);
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}
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public void throwNullpointer() {
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nullObject.hashCode();
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}
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}
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