290 lines
9.1 KiB
Java
290 lines
9.1 KiB
Java
/*
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* Copyright (c) 2020, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.openjdk.bench.java.nio;
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import org.openjdk.jmh.annotations.Benchmark;
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import org.openjdk.jmh.annotations.BenchmarkMode;
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import org.openjdk.jmh.annotations.Fork;
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import org.openjdk.jmh.annotations.Measurement;
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import org.openjdk.jmh.annotations.Mode;
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import org.openjdk.jmh.annotations.OutputTimeUnit;
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import org.openjdk.jmh.annotations.Param;
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import org.openjdk.jmh.annotations.Scope;
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import org.openjdk.jmh.annotations.Setup;
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import org.openjdk.jmh.annotations.State;
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import org.openjdk.jmh.annotations.Warmup;
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import java.nio.*;
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import java.util.concurrent.TimeUnit;
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import static java.nio.ByteOrder.*;
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/**
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* Benchmark for memory access operations on java.nio.Buffer ( and its views )
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*
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* A large number of variants are covered. The individual benchmarks conform to
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* the following convention:
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* test(Direct|Heap)(Bulk|Loop)(Get|Put)Long(View)?(Swap)?(RO)?
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*
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* This allows to easily run a subset of particular interest. For example:
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* Direct only :- "org.openjdk.bench.java.nio.LongBuffers.testDirect.*"
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* Bulk only :- "org.openjdk.bench.java.nio.LongBuffers.test.*Bulk.*"
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* Loop Put Swapped Views: -
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* test(Direct|Heap)(Loop)(Put)Long(View)+(Swap)+"
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*/
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@BenchmarkMode(Mode.AverageTime)
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@Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
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@Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
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@OutputTimeUnit(TimeUnit.NANOSECONDS)
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@State(Scope.Thread)
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@Fork(3)
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public class LongBuffers {
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static final int CARRIER_BYTE_WIDTH = 8;
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@Param({"16", "1024", "131072"})
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private int size;
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public long longValue;
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public long[] longArray;
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public LongBuffer heapLongBuffer;
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public LongBuffer heapLongBufferRO;
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public LongBuffer heapByteBufferAsLongBufferView;
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public LongBuffer heapByteBufferAsLongBufferViewRO;
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public LongBuffer heapByteBufferAsLongBufferViewSwap;
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public LongBuffer heapByteBufferAsLongBufferViewSwapRO;
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public LongBuffer directByteBufferAsLongBufferView;
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public LongBuffer directByteBufferAsLongBufferViewRO;
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public LongBuffer directByteBufferAsLongBufferViewSwap;
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public LongBuffer directByteBufferAsLongBufferViewSwapRO;
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@Setup
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public void setup() {
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longArray = new long[size / CARRIER_BYTE_WIDTH];
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// explicitly allocated heap carrier buffer
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heapLongBuffer = LongBuffer.allocate(size / CARRIER_BYTE_WIDTH);
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heapLongBufferRO = LongBuffer.allocate(size / CARRIER_BYTE_WIDTH).asReadOnlyBuffer();
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// ByteBuffer views
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heapByteBufferAsLongBufferView = ByteBuffer.allocate(size).order(nativeOrder()).asLongBuffer();
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heapByteBufferAsLongBufferViewRO = ByteBuffer.allocate(size).order(nativeOrder()).asLongBuffer().asReadOnlyBuffer();
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directByteBufferAsLongBufferView = ByteBuffer.allocateDirect(size).order(nativeOrder()).asLongBuffer();
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directByteBufferAsLongBufferViewRO = ByteBuffer.allocateDirect(size).order(nativeOrder()).asLongBuffer().asReadOnlyBuffer();
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// endianness swapped
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ByteOrder nonNativeOrder = nativeOrder() == BIG_ENDIAN ? LITTLE_ENDIAN : BIG_ENDIAN;
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heapByteBufferAsLongBufferViewSwap = ByteBuffer.allocate(size).order(nonNativeOrder).asLongBuffer();
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heapByteBufferAsLongBufferViewSwapRO = ByteBuffer.allocate(size).order(nonNativeOrder).asLongBuffer().asReadOnlyBuffer();
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directByteBufferAsLongBufferViewSwap = ByteBuffer.allocateDirect(size).order(nonNativeOrder).asLongBuffer();
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directByteBufferAsLongBufferViewSwapRO = ByteBuffer.allocateDirect(size).order(nonNativeOrder).asLongBuffer().asReadOnlyBuffer();
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}
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// ---------------- HELPER METHODS
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private long innerLoopGetLong(LongBuffer buf) {
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long r = 0;
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for (int i = 0; i < buf.capacity(); i++) {
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r += buf.get(i);
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}
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return r;
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}
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private void innerLoopPutLong(LongBuffer buf) {
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for (int i = 0; i < buf.capacity(); i++) {
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buf.put(i, longValue);
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}
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}
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// -- Heap___
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@Benchmark
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public long[] testHeapBulkPutLong() {
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heapLongBuffer.put(0, longArray);
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return longArray;
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}
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@Benchmark
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public long[] testHeapBulkGetLong() {
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heapLongBuffer.get(0, longArray);
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return longArray;
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}
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@Benchmark
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public void testHeapLoopPutLong() {
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innerLoopPutLong(heapLongBuffer);
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}
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@Benchmark
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public long testHeapLoopGetLong() {
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return innerLoopGetLong(heapLongBuffer);
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}
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// -- Heap_View_Swap_RO
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@Benchmark
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public long[] testHeapBulkGetLongViewSwapRO() {
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heapByteBufferAsLongBufferViewSwapRO.get(0, longArray);
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return longArray;
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}
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@Benchmark
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public long testHeapLoopGetLongViewSwapRO() {
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return innerLoopGetLong(heapByteBufferAsLongBufferViewSwapRO);
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}
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// -- Heap_View_Swap_
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@Benchmark
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public long[] testHeapBulkPutLongViewSwap() {
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heapByteBufferAsLongBufferViewSwap.put(0, longArray);
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return longArray;
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}
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@Benchmark
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public long[] testHeapBulkGetLongViewSwap() {
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heapByteBufferAsLongBufferViewSwap.get(0, longArray);
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return longArray;
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}
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@Benchmark
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public void testHeapLoopPutLongViewSwap() {
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innerLoopPutLong(heapByteBufferAsLongBufferViewSwap);
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}
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@Benchmark
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public long testHeapLoopGetLongViewSwap() {
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return innerLoopGetLong(heapByteBufferAsLongBufferViewSwap);
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}
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// -- Heap_View__RO
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@Benchmark
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public long[] testHeapBulkGetLongViewRO() {
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heapByteBufferAsLongBufferViewRO.get(0, longArray);
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return longArray;
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}
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@Benchmark
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public long testHeapLoopGetLongViewRO() {
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return innerLoopGetLong(heapByteBufferAsLongBufferViewRO);
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}
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// -- Heap_View__
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@Benchmark
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public long[] testHeapBulkPutLongView() {
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heapByteBufferAsLongBufferView.put(0, longArray);
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return longArray;
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}
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@Benchmark
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public long[] testHeapBulkGetLongView() {
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heapByteBufferAsLongBufferView.get(0, longArray);
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return longArray;
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}
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@Benchmark
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public void testHeapLoopPutLongView() {
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innerLoopPutLong(heapByteBufferAsLongBufferView);
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}
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@Benchmark
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public long testHeapLoopGetLongView() {
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return innerLoopGetLong(heapByteBufferAsLongBufferView);
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}
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// -- Direct_View_Swap_RO
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@Benchmark
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public long[] testDirectBulkGetLongViewSwapRO() {
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directByteBufferAsLongBufferViewSwapRO.get(0, longArray);
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return longArray;
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}
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@Benchmark
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public long testDirectLoopGetLongViewSwapRO() {
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return innerLoopGetLong(directByteBufferAsLongBufferViewSwapRO);
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}
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// -- Direct_View_Swap_
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@Benchmark
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public long[] testDirectBulkPutLongViewSwap() {
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directByteBufferAsLongBufferViewSwap.put(0, longArray);
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return longArray;
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}
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@Benchmark
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public long[] testDirectBulkGetLongViewSwap() {
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directByteBufferAsLongBufferViewSwap.get(0, longArray);
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return longArray;
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}
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@Benchmark
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public void testDirectLoopPutLongViewSwap() {
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innerLoopPutLong(directByteBufferAsLongBufferViewSwap);
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}
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@Benchmark
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public long testDirectLoopGetLongViewSwap() {
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return innerLoopGetLong(directByteBufferAsLongBufferViewSwap);
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}
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// -- Direct_View__RO
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@Benchmark
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public long[] testDirectBulkGetLongViewRO() {
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directByteBufferAsLongBufferViewRO.get(0, longArray);
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return longArray;
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}
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@Benchmark
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public long testDirectLoopGetLongViewRO() {
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return innerLoopGetLong(directByteBufferAsLongBufferViewRO);
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}
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// -- Direct_View__
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@Benchmark
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public long[] testDirectBulkPutLongView() {
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directByteBufferAsLongBufferView.put(0, longArray);
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return longArray;
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}
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@Benchmark
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public long[] testDirectBulkGetLongView() {
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directByteBufferAsLongBufferView.get(0, longArray);
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return longArray;
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}
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@Benchmark
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public void testDirectLoopPutLongView() {
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innerLoopPutLong(directByteBufferAsLongBufferView);
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}
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@Benchmark
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public long testDirectLoopGetLongView() {
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return innerLoopGetLong(directByteBufferAsLongBufferView);
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}
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}
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