1 /* 2 * Copyright (c) 2016, 2019, 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.openjdk.bench.valhalla.sandbox.corelibs.corelibs.mapprotos; 24 25 import org.openjdk.jmh.annotations.Benchmark; 26 import org.openjdk.jmh.annotations.Setup; 27 import org.openjdk.jmh.annotations.TearDown; 28 29 import org.openjdk.jmh.infra.Blackhole; 30 31 import java.util.Arrays; 32 import java.util.Collections; 33 import java.util.HashMap; 34 import java.util.Map; 35 import java.util.function.IntFunction; 36 37 public class GetX extends MapBase { 38 39 IntFunction<Map<Integer, Integer>> mapSupplier; 40 Map<Integer, Integer> map; 41 Integer[] mixed; 42 43 @Setup 44 public void setup() { 45 super.init(size); 46 try { 47 Class<?> mapClass = Class.forName(mapType); 48 mapSupplier = (s) -> newInstance(mapClass, s); 49 } catch (Exception ex) { 50 System.out.printf("%s: %s%n", mapType, ex.getMessage()); 51 return; 52 } 53 54 map = mapSupplier.apply(size); 55 for (Integer k : keys) { 56 map.put(k, k); 57 } 58 59 mixed = new Integer[size]; 60 System.arraycopy(keys, 0, mixed, 0, size / 2); 61 System.arraycopy(nonKeys, 0, mixed, size / 2, size / 2); 62 Collections.shuffle(Arrays.asList(mixed), rnd); 63 } 64 65 @TearDown 66 public void teardown() { 67 super.TearDown(map); 68 } 69 70 Map<Integer, Integer> newInstance(Class<?> mapClass, int size) { 71 try { 72 return (Map<Integer, Integer>)mapClass.getConstructor(int.class).newInstance(size); 73 } catch (Exception ex) { 74 throw new RuntimeException("failed", ex); 75 } 76 } 77 78 @Benchmark 79 public void getHit(Blackhole bh) { 80 Integer[] keys = this.keys; 81 Map<Integer, Integer> map = this.map; 82 for (Integer k : keys) { 83 bh.consume(map.get(k)); 84 } 85 } 86 87 @Benchmark 88 public void getMix(Blackhole bh) { 89 Integer[] keys = this.mixed; 90 Map<Integer, Integer> map = this.map; 91 for (Integer k : keys) { 92 bh.consume(map.get(k)); 93 } 94 } 95 96 }