290 lines
9.3 KiB
Java
290 lines
9.3 KiB
Java
/*
|
|
* Copyright (c) 2020, 2022, 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.nio;
|
|
|
|
import org.openjdk.jmh.annotations.Benchmark;
|
|
import org.openjdk.jmh.annotations.BenchmarkMode;
|
|
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.Param;
|
|
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 java.nio.*;
|
|
import java.util.concurrent.TimeUnit;
|
|
import static java.nio.ByteOrder.*;
|
|
|
|
/**
|
|
* Benchmark for memory access operations on java.nio.Buffer ( and its views )
|
|
*
|
|
* A large number of variants are covered. The individual benchmarks conform to
|
|
* the following convention:
|
|
* test(Direct|Heap)(Bulk|Loop)(Get|Put)Float(View)?(Swap)?(RO)?
|
|
*
|
|
* This allows to easily run a subset of particular interest. For example:
|
|
* Direct only :- "org.openjdk.bench.java.nio.FloatBuffers.testDirect.*"
|
|
* Bulk only :- "org.openjdk.bench.java.nio.FloatBuffers.test.*Bulk.*"
|
|
* Loop Put Swapped Views: -
|
|
* test(Direct|Heap)(Loop)(Put)Float(View)+(Swap)+"
|
|
*/
|
|
@BenchmarkMode(Mode.AverageTime)
|
|
@Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
|
|
@Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
|
|
@OutputTimeUnit(TimeUnit.NANOSECONDS)
|
|
@State(Scope.Thread)
|
|
@Fork(3)
|
|
public class FloatBuffers {
|
|
|
|
static final int CARRIER_BYTE_WIDTH = 4;
|
|
|
|
@Param({"16", "1024", "131072"})
|
|
private int size;
|
|
|
|
public float floatValue;
|
|
public float[] floatArray;
|
|
|
|
public FloatBuffer heapFloatBuffer;
|
|
public FloatBuffer heapFloatBufferRO;
|
|
public FloatBuffer heapByteBufferAsFloatBufferView;
|
|
public FloatBuffer heapByteBufferAsFloatBufferViewRO;
|
|
public FloatBuffer heapByteBufferAsFloatBufferViewSwap;
|
|
public FloatBuffer heapByteBufferAsFloatBufferViewSwapRO;
|
|
public FloatBuffer directByteBufferAsFloatBufferView;
|
|
public FloatBuffer directByteBufferAsFloatBufferViewRO;
|
|
public FloatBuffer directByteBufferAsFloatBufferViewSwap;
|
|
public FloatBuffer directByteBufferAsFloatBufferViewSwapRO;
|
|
|
|
@Setup
|
|
public void setup() {
|
|
floatArray = new float[size / CARRIER_BYTE_WIDTH];
|
|
|
|
// explicitly allocated heap carrier buffer
|
|
heapFloatBuffer = FloatBuffer.allocate(size / CARRIER_BYTE_WIDTH);
|
|
heapFloatBufferRO = FloatBuffer.allocate(size / CARRIER_BYTE_WIDTH).asReadOnlyBuffer();
|
|
|
|
// ByteBuffer views
|
|
heapByteBufferAsFloatBufferView = ByteBuffer.allocate(size).order(nativeOrder()).asFloatBuffer();
|
|
heapByteBufferAsFloatBufferViewRO = ByteBuffer.allocate(size).order(nativeOrder()).asFloatBuffer().asReadOnlyBuffer();
|
|
directByteBufferAsFloatBufferView = ByteBuffer.allocateDirect(size).order(nativeOrder()).asFloatBuffer();
|
|
directByteBufferAsFloatBufferViewRO = ByteBuffer.allocateDirect(size).order(nativeOrder()).asFloatBuffer().asReadOnlyBuffer();
|
|
|
|
// endianness swapped
|
|
ByteOrder nonNativeOrder = nativeOrder() == BIG_ENDIAN ? LITTLE_ENDIAN : BIG_ENDIAN;
|
|
heapByteBufferAsFloatBufferViewSwap = ByteBuffer.allocate(size).order(nonNativeOrder).asFloatBuffer();
|
|
heapByteBufferAsFloatBufferViewSwapRO = ByteBuffer.allocate(size).order(nonNativeOrder).asFloatBuffer().asReadOnlyBuffer();
|
|
directByteBufferAsFloatBufferViewSwap = ByteBuffer.allocateDirect(size).order(nonNativeOrder).asFloatBuffer();
|
|
directByteBufferAsFloatBufferViewSwapRO = ByteBuffer.allocateDirect(size).order(nonNativeOrder).asFloatBuffer().asReadOnlyBuffer();
|
|
}
|
|
|
|
// ---------------- HELPER METHODS
|
|
|
|
private float innerLoopGetFloat(FloatBuffer buf) {
|
|
float r = 0;
|
|
for (int i = 0; i < buf.capacity(); i++) {
|
|
r += buf.get(i);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
private void innerLoopPutFloat(FloatBuffer buf) {
|
|
for (int i = 0; i < buf.capacity(); i++) {
|
|
buf.put(i, floatValue);
|
|
}
|
|
}
|
|
|
|
// -- Heap___
|
|
|
|
@Benchmark
|
|
public float[] testHeapBulkPutFloat() {
|
|
heapFloatBuffer.put(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public float[] testHeapBulkGetFloat() {
|
|
heapFloatBuffer.get(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public void testHeapLoopPutFloat() {
|
|
innerLoopPutFloat(heapFloatBuffer);
|
|
}
|
|
|
|
@Benchmark
|
|
public float testHeapLoopGetFloat() {
|
|
return innerLoopGetFloat(heapFloatBuffer);
|
|
}
|
|
|
|
// -- Heap_View_Swap_RO
|
|
|
|
@Benchmark
|
|
public float[] testHeapBulkGetFloatViewSwapRO() {
|
|
heapByteBufferAsFloatBufferViewSwapRO.get(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public float testHeapLoopGetFloatViewSwapRO() {
|
|
return innerLoopGetFloat(heapByteBufferAsFloatBufferViewSwapRO);
|
|
}
|
|
|
|
// -- Heap_View_Swap_
|
|
|
|
@Benchmark
|
|
public float[] testHeapBulkPutFloatViewSwap() {
|
|
heapByteBufferAsFloatBufferViewSwap.put(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public float[] testHeapBulkGetFloatViewSwap() {
|
|
heapByteBufferAsFloatBufferViewSwap.get(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public void testHeapLoopPutFloatViewSwap() {
|
|
innerLoopPutFloat(heapByteBufferAsFloatBufferViewSwap);
|
|
}
|
|
|
|
@Benchmark
|
|
public float testHeapLoopGetFloatViewSwap() {
|
|
return innerLoopGetFloat(heapByteBufferAsFloatBufferViewSwap);
|
|
}
|
|
|
|
// -- Heap_View__RO
|
|
|
|
@Benchmark
|
|
public float[] testHeapBulkGetFloatViewRO() {
|
|
heapByteBufferAsFloatBufferViewRO.get(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public float testHeapLoopGetFloatViewRO() {
|
|
return innerLoopGetFloat(heapByteBufferAsFloatBufferViewRO);
|
|
}
|
|
|
|
// -- Heap_View__
|
|
|
|
@Benchmark
|
|
public float[] testHeapBulkPutFloatView() {
|
|
heapByteBufferAsFloatBufferView.put(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public float[] testHeapBulkGetFloatView() {
|
|
heapByteBufferAsFloatBufferView.get(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public void testHeapLoopPutFloatView() {
|
|
innerLoopPutFloat(heapByteBufferAsFloatBufferView);
|
|
}
|
|
|
|
@Benchmark
|
|
public float testHeapLoopGetFloatView() {
|
|
return innerLoopGetFloat(heapByteBufferAsFloatBufferView);
|
|
}
|
|
|
|
// -- Direct_View_Swap_RO
|
|
|
|
@Benchmark
|
|
public float[] testDirectBulkGetFloatViewSwapRO() {
|
|
directByteBufferAsFloatBufferViewSwapRO.get(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public float testDirectLoopGetFloatViewSwapRO() {
|
|
return innerLoopGetFloat(directByteBufferAsFloatBufferViewSwapRO);
|
|
}
|
|
|
|
// -- Direct_View_Swap_
|
|
|
|
@Benchmark
|
|
public float[] testDirectBulkPutFloatViewSwap() {
|
|
directByteBufferAsFloatBufferViewSwap.put(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public float[] testDirectBulkGetFloatViewSwap() {
|
|
directByteBufferAsFloatBufferViewSwap.get(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public void testDirectLoopPutFloatViewSwap() {
|
|
innerLoopPutFloat(directByteBufferAsFloatBufferViewSwap);
|
|
}
|
|
|
|
@Benchmark
|
|
public float testDirectLoopGetFloatViewSwap() {
|
|
return innerLoopGetFloat(directByteBufferAsFloatBufferViewSwap);
|
|
}
|
|
|
|
// -- Direct_View__RO
|
|
|
|
@Benchmark
|
|
public float[] testDirectBulkGetFloatViewRO() {
|
|
directByteBufferAsFloatBufferViewRO.get(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public float testDirectLoopGetFloatViewRO() {
|
|
return innerLoopGetFloat(directByteBufferAsFloatBufferViewRO);
|
|
}
|
|
|
|
// -- Direct_View__
|
|
|
|
@Benchmark
|
|
public float[] testDirectBulkPutFloatView() {
|
|
directByteBufferAsFloatBufferView.put(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public float[] testDirectBulkGetFloatView() {
|
|
directByteBufferAsFloatBufferView.get(0, floatArray);
|
|
return floatArray;
|
|
}
|
|
|
|
@Benchmark
|
|
public void testDirectLoopPutFloatView() {
|
|
innerLoopPutFloat(directByteBufferAsFloatBufferView);
|
|
}
|
|
|
|
@Benchmark
|
|
public float testDirectLoopGetFloatView() {
|
|
return innerLoopGetFloat(directByteBufferAsFloatBufferView);
|
|
}
|
|
}
|