001/*
002 * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.virtual.bench;
024
025import org.openjdk.jmh.annotations.*;
026
027public class PartialEscapeBench {
028
029    private static class Thing {
030        final int id;
031        final String name;
032
033        Thing(int id, String name) {
034            this.id = id;
035            this.name = name;
036        }
037    }
038
039    @State(Scope.Thread)
040    public static class ThingsCache {
041
042        private Thing[] cache = new Thing[100];
043
044        public Thing getOrAdd(Thing input) {
045            if (cache[input.id] == null) {
046                cache[input.id] = input;
047            }
048            return cache[input.id];
049        }
050    }
051
052    @Benchmark
053    @Warmup(iterations = 30)
054    public String benchPartialEscape(ThingsCache cache) {
055        Thing thing = cache.getOrAdd(new Thing(42, "the answer!"));
056        return thing.name;
057    }
058}