diff --git a/test/micro/org/openjdk/bench/java/util/TestCRC32.java b/test/micro/org/openjdk/bench/java/util/TestCRC32.java new file mode 100644 index 00000000000..241e507a80c --- /dev/null +++ b/test/micro/org/openjdk/bench/java/util/TestCRC32.java @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2021, 2023, 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 java.util.Random; +import java.util.concurrent.TimeUnit; +import java.util.zip.CRC32; +import org.openjdk.jmh.annotations.*; + +@BenchmarkMode(Mode.Throughput) +@OutputTimeUnit(TimeUnit.MILLISECONDS) +@State(Scope.Benchmark) +@Warmup(iterations = 4, time = 2) +@Measurement(iterations = 4, time = 2) +@Fork(value = 3) +public class TestCRC32 { + + private CRC32 crc32; + private Random random; + private byte[] bytes; + + @Param({"64", "128", "256", "512", /* "1024", */ "2048", /* "4096", "8192", */ "16384", /* "32768", */ "65536"}) + private int count; + + public TestCRC32() { + crc32 = new CRC32(); + random = new Random(2147483648L); + bytes = new byte[1000000]; + random.nextBytes(bytes); + } + + @Setup(Level.Iteration) + public void setupBytes() { + crc32.reset(); + } + + @Benchmark + public void testCRC32Update() { + crc32.update(bytes, 0, count); + } +}