--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/micro/org/openjdk/bench/java/util/ImmutableColls.java Wed Jan 09 01:06:19 2019 +0100
@@ -0,0 +1,257 @@
+/*
+ * Copyright (c) 2019 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.
+ *
+ * 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.bench.java.util;
+
+import org.openjdk.jmh.annotations.*;
+import org.openjdk.jmh.infra.Blackhole;
+
+import java.util.*;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Micros for the various collections implemented in
+ * java.util.ImmutableCollections
+ */
+@State(Scope.Benchmark)
+@OutputTimeUnit(TimeUnit.MICROSECONDS)
+public class ImmutableColls {
+
+ public static String[] STRINGS = {"hi", "all", "of", "you"};
+
+ public static List<String> l0 = List.of();
+ public static List<String> l1 = List.of(Arrays.copyOf(STRINGS, 1));
+ public static List<String> l2 = List.of(Arrays.copyOf(STRINGS, 2));
+ public static List<String> l3 = List.of(Arrays.copyOf(STRINGS, 3));
+ public static List<String> l4 = List.of(Arrays.copyOf(STRINGS, 4));
+
+ public static Set<String> s0 = Set.copyOf(l0);
+ public static Set<String> s1 = Set.copyOf(l1);
+ public static Set<String> s2 = Set.copyOf(l2);
+ public static Set<String> s3 = Set.copyOf(l3);
+ public static Set<String> s4 = Set.copyOf(l4);
+
+ public static Map<String, String> m0 = Map.of();
+ public static Map<String, String> m1 = Map.of(STRINGS[0], STRINGS[0]);
+ public static Map<String, String> m2 = Map.of(STRINGS[0], STRINGS[0],
+ STRINGS[1], STRINGS[1]);
+ public static Map<String, String> m3 = Map.of(STRINGS[0], STRINGS[0],
+ STRINGS[1], STRINGS[1],
+ STRINGS[2], STRINGS[2]);
+ public static Map<String, String> m4 = Map.of(STRINGS[0], STRINGS[0],
+ STRINGS[1], STRINGS[1],
+ STRINGS[2], STRINGS[2],
+ STRINGS[3], STRINGS[3]);
+
+ public static List<String> a0 = new ArrayList<>(l0);
+ public static List<String> a1 = new ArrayList<>(l1);
+ public static List<String> a2 = new ArrayList<>(l2);
+ public static List<String> a3 = new ArrayList<>(l3);
+ public static List<String> a4 = new ArrayList<>(l4);
+
+ public static final List<String> fl0 = List.of();
+ public static final List<String> fl1 = List.copyOf(l1);
+ public static final List<String> fl2 = List.copyOf(l2);
+ public static final List<String> fl3 = List.copyOf(l3);
+ public static final List<String> fl4 = List.copyOf(l4);
+
+ public static final List<String> fsl0 = fl0.subList(0, 0);
+ public static final List<String> fsl1 = fl2.subList(1, 2);
+ public static final List<String> fsl2 = fl3.subList(0, 2);
+ public static final List<String> fsl3 = fl4.subList(0, 3);
+
+ public static final Set<String> fs0 = Set.copyOf(l0);
+ public static final Set<String> fs1 = Set.copyOf(l1);
+ public static final Set<String> fs2 = Set.copyOf(l2);
+ public static final Set<String> fs3 = Set.copyOf(l3);
+ public static final Set<String> fs4 = Set.copyOf(l4);
+
+ public static final Map<String, String> fm0 = Map.copyOf(m0);
+ public static final Map<String, String> fm1 = Map.copyOf(m1);
+ public static final Map<String, String> fm2 = Map.copyOf(m2);
+ public static final Map<String, String> fm3 = Map.copyOf(m3);
+ public static final Map<String, String> fm4 = Map.copyOf(m4);
+
+ public static final List<String> fa0 = new ArrayList<>(l0);
+ public static final List<String> fa1 = new ArrayList<>(l1);
+ public static final List<String> fa2 = new ArrayList<>(l2);
+ public static final List<String> fa3 = new ArrayList<>(l3);
+ public static final List<String> fa4 = new ArrayList<>(l4);
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public int sumSizesList() {
+ return sizeOf(l0) +
+ sizeOf(l1) +
+ sizeOf(l2) +
+ sizeOf(l3) +
+ sizeOf(l4);
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public int finalSumSizesList() {
+ return sizeOf(fl0) +
+ sizeOf(fl1) +
+ sizeOf(fl2) +
+ sizeOf(fl3) +
+ sizeOf(fl4);
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public int sumSizesArrayList() {
+ return sizeOf2(a0) +
+ sizeOf2(a1) +
+ sizeOf2(a2) +
+ sizeOf2(a3) +
+ sizeOf2(a4);
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public int finalSumSizesArrayList() {
+ return sizeOf2(fa0) +
+ sizeOf2(fa1) +
+ sizeOf2(fa2) +
+ sizeOf2(fa3) +
+ sizeOf2(fa4);
+ }
+
+ public int sizeOf2(List<String> list) {
+ return list.size();
+ }
+
+ public int sizeOf(List<String> list) {
+ return list.size();
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public int getFromList() {
+ return get(l1, 0).length() +
+ get(l2, 1).length() +
+ get(l3, 2).length() +
+ get(l4, 3).length();
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public int finalGetFromList() {
+ return get(fl1, 0).length() +
+ get(fl2, 1).length() +
+ get(fl3, 2).length() +
+ get(fl4, 3).length();
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public void toArrayFromSet(Blackhole bh) {
+ bh.consume(fs4.toArray());
+ bh.consume(s1.toArray());
+ bh.consume(s3.toArray());
+ bh.consume(fs2.toArray());
+ bh.consume(s0.toArray());
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public void toArrayFromMap(Blackhole bh) {
+ bh.consume(fm4.entrySet().toArray());
+ bh.consume(m1.entrySet().toArray());
+ bh.consume(m3.entrySet().toArray());
+ bh.consume(fm2.entrySet().toArray());
+ bh.consume(m0.entrySet().toArray());
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public void toArrayFromList(Blackhole bh) {
+ bh.consume(fl4.toArray());
+ bh.consume(fl1.toArray());
+ bh.consume(l3.toArray());
+ bh.consume(l0.toArray());
+ bh.consume(fsl3.toArray());
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public void toTypedArrayFromSet(Blackhole bh) {
+ bh.consume(fs4.toArray(new String[0]));
+ bh.consume(s1.toArray(new String[0]));
+ bh.consume(s3.toArray(new String[0]));
+ bh.consume(fs2.toArray(new String[0]));
+ bh.consume(s0.toArray(new String[0]));
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public void toTypedArrayFromMap(Blackhole bh) {
+ bh.consume(fm4.entrySet().toArray(new Map.Entry[0]));
+ bh.consume(m1.entrySet().toArray(new Map.Entry[0]));
+ bh.consume(m3.entrySet().toArray(new Map.Entry[0]));
+ bh.consume(fm2.entrySet().toArray(new Map.Entry[0]));
+ bh.consume(m0.entrySet().toArray(new Map.Entry[0]));
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public void toTypedArrayFromList(Blackhole bh) {
+ bh.consume(fl4.toArray(new String[0]));
+ bh.consume(fl1.toArray(new String[0]));
+ bh.consume(l3.toArray(new String[0]));
+ bh.consume(l0.toArray(new String[0]));
+ bh.consume(fsl3.toArray(new String[0]));
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public void copyOfLists(Blackhole bh) {
+ bh.consume(List.copyOf(fl1));
+ bh.consume(List.copyOf(fl4));
+ bh.consume(List.copyOf(fsl2));
+ bh.consume(List.copyOf(fsl3));
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public int finalGetFromArrayList() {
+ return get2(fa1, 0).length() +
+ get2(fa2, 1).length() +
+ get2(fa3, 2).length() +
+ get2(fa4, 3).length();
+ }
+
+ public String get2(List<String> list, int idx) {
+ return list.get(idx);
+ }
+
+ public String get(List<String> list, int idx) {
+ return list.get(idx);
+ }
+
+ @Benchmark
+ @CompilerControl(CompilerControl.Mode.DONT_INLINE)
+ public Set<String> createSetOf() {
+ return Set.of(STRINGS);
+ }
+}