jdk-24/test/micro/org/openjdk/bench/vm/compiler/Rotation.java
Swati Sharma b438cffdb9 8314085: Fixing scope from benchmark to thread for JMH tests having shared state
Co-authored-by: Vladimir Ivanov <vaivanov@openjdk.org>
Reviewed-by: sviswanathan, ecaspole
2023-10-03 16:01:36 +00:00

109 lines
3.5 KiB
Java

/*
* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2021, Arm Limited. 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
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package org.openjdk.bench.vm.compiler;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.CompilerControl;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Warmup;
import org.openjdk.jmh.infra.Blackhole;
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@State(Scope.Thread)
@Fork(value = 3)
@Measurement(iterations = 5, time = 1000, timeUnit = TimeUnit.MILLISECONDS)
@Warmup(iterations = 5, time = 1000, timeUnit = TimeUnit.MILLISECONDS)
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public class Rotation {
private static final int COUNT = 5000;
@State(Scope.Benchmark)
public static class MyState {
public int xi = 10;
public int yi = 24;
}
@Benchmark
public void xorRotateRight(MyState s, Blackhole blackhole) {
int x = s.xi;
int y = s.yi;
for (int i = 0; i < COUNT; i++) {
y = x ^ ((y >>> 5) | (y << -5));
}
blackhole.consume(y);
}
@Benchmark
public void bicRotateRight(MyState s, Blackhole blackhole) {
int x = s.xi;
int y = s.yi;
for (int i = 0; i < COUNT; i++) {
y = x & (-1 ^ ((y >>> 5) | (y << -5)));
}
blackhole.consume(y);
}
@Benchmark
public void eonRotateRight(MyState s, Blackhole blackhole) {
int x = s.xi;
int y = s.yi;
for (int i = 0; i < COUNT; i++) {
y = x ^ (-1 ^ ((y >>> 5) | (y << -5)));
}
blackhole.consume(y);
}
@Benchmark
public void ornRotateRight(MyState s, Blackhole blackhole) {
int x = s.xi;
int y = s.yi;
for (int i = 0; i < COUNT; i++) {
y = x | (-1 ^ ((y >>> 5) | (y << -5)));
}
blackhole.consume(y);
}
@Benchmark
public void andRotateRight(MyState s, Blackhole blackhole) {
int x = s.xi;
int y = s.yi;
for (int i = 0; i < COUNT; i++) {
y = x & ((y >>> 5) | (y << -5));
}
blackhole.consume(y);
}
}