1 /* 2 * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.virtual.bench; 24 25 import org.openjdk.jmh.annotations.Benchmark; 26 import org.openjdk.jmh.annotations.Scope; 27 import org.openjdk.jmh.annotations.State; 28 import org.openjdk.jmh.annotations.Warmup; 29 30 import org.graalvm.compiler.microbenchmarks.graal.GraalBenchmark; 31 32 public class PartialEscapeBench extends GraalBenchmark { 33 34 private static class Thing { 35 final int id; 36 final String name; 37 38 Thing(int id, String name) { 39 this.id = id; 40 this.name = name; 41 } 42 } 43 44 @State(Scope.Thread) 45 public static class ThingsCache { 46 47 private Thing[] cache = new Thing[100]; 48 49 public Thing getOrAdd(Thing input) { 50 if (cache[input.id] == null) { 51 cache[input.id] = input; 52 } 53 return cache[input.id]; 54 } 55 } 56 57 @Benchmark 58 @Warmup(iterations = 30) 59 public String benchPartialEscape(ThingsCache cache) { 60 Thing thing = cache.getOrAdd(new Thing(42, "the answer!")); 61 return thing.name; 62 } 63 }