/* * Copyright (c) 2018, 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 org.openjdk; import org.openjdk.jmh.annotations.*; import java.io.IOException; import java.util.jar.*; @State(Scope.Benchmark) public class Attributes { java.util.jar.Attributes attrs = new java.util.jar.Attributes(); public static String attr; static { attr = new StringBuilder("fooo").append(System.nanoTime()).toString(); } @Benchmark public String get() { return attrs.getValue(attr); } @Benchmark public String getClassPath() { return attrs.getValue("Class-Path"); } @Benchmark public String putClassPath() { return attrs.putValue("Class-Path", attr); } @Benchmark public String putAttr() { return attrs.putValue(attr, attr); } @Benchmark public Object stressAdd(org.openjdk.jmh.infra.Blackhole bh) { StringBuilder sb = new StringBuilder("foo"); sb.append(java.util.concurrent.ThreadLocalRandom.current().nextInt()); String s = sb.toString(); java.util.jar.Attributes a = new java.util.jar.Attributes(); a.putValue(s, attr); return a; } }