a03a3a43bb
Co-authored-by: Vladimir Ivanov <vaivanov@openjdk.org> Reviewed-by: ecaspole, sviswanathan, mli
124 lines
3.9 KiB
Java
124 lines
3.9 KiB
Java
/*
|
|
* Copyright (c) 2020, 2021, Red Hat Inc. 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.io;
|
|
|
|
import org.openjdk.jmh.annotations.*;
|
|
|
|
import java.io.*;
|
|
import java.util.concurrent.TimeUnit;
|
|
|
|
@BenchmarkMode(Mode.AverageTime)
|
|
@OutputTimeUnit(TimeUnit.MICROSECONDS)
|
|
@Fork(2)
|
|
@Measurement(iterations = 6, time = 1)
|
|
@Warmup(iterations=4, time = 2)
|
|
@State(Scope.Thread)
|
|
public class DataOutputStreamTest {
|
|
|
|
public enum BasicType {CHAR, SHORT, INT, STRING}
|
|
@Param({"CHAR", "SHORT", "INT", "STRING"}) BasicType basicType;
|
|
|
|
@Param({"4096"}) int size;
|
|
final ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(size);
|
|
File f;
|
|
String outputString;
|
|
FileOutputStream fileOutputStream;
|
|
DataOutput bufferedFileStream, rawFileStream, byteArrayStream;
|
|
|
|
@Setup(Level.Trial)
|
|
public void setup() throws Exception {
|
|
f = File.createTempFile("DataOutputStreamTest","out");
|
|
fileOutputStream = new FileOutputStream(f);
|
|
byteArrayStream = new DataOutputStream(byteArrayOutputStream);
|
|
rawFileStream = new DataOutputStream(fileOutputStream);
|
|
bufferedFileStream = new DataOutputStream(new BufferedOutputStream(fileOutputStream));
|
|
outputString = new String(new byte[size]);
|
|
}
|
|
|
|
public void writeChars(DataOutput dataOutput)
|
|
throws Exception {
|
|
for (int i = 0; i < size; i += 2) {
|
|
dataOutput.writeChar(i);
|
|
}
|
|
}
|
|
|
|
public void writeShorts(DataOutput dataOutput)
|
|
throws Exception {
|
|
for (int i = 0; i < size; i += 2) {
|
|
dataOutput.writeShort(i);
|
|
}
|
|
}
|
|
|
|
public void writeInts(DataOutput dataOutput)
|
|
throws Exception {
|
|
for (int i = 0; i < size; i += 4) {
|
|
dataOutput.writeInt(i);
|
|
}
|
|
}
|
|
|
|
public void writeString(DataOutput dataOutput)
|
|
throws Exception {
|
|
dataOutput.writeChars(outputString);
|
|
}
|
|
|
|
public void write(DataOutput dataOutput)
|
|
throws Exception {
|
|
switch (basicType) {
|
|
case CHAR:
|
|
writeChars(dataOutput);
|
|
break;
|
|
case SHORT:
|
|
writeShorts(dataOutput);
|
|
break;
|
|
case INT:
|
|
writeInts(dataOutput);
|
|
break;
|
|
case STRING:
|
|
writeString(dataOutput);
|
|
break;
|
|
}
|
|
}
|
|
|
|
@Benchmark
|
|
public void dataOutputStreamOverByteArray() throws Exception {
|
|
byteArrayOutputStream.reset();
|
|
write(byteArrayStream);
|
|
byteArrayOutputStream.flush();
|
|
}
|
|
|
|
@Benchmark
|
|
public void dataOutputStreamOverRawFileStream() throws Exception {
|
|
fileOutputStream.getChannel().position(0);
|
|
write(rawFileStream);
|
|
fileOutputStream.flush();
|
|
}
|
|
|
|
@Benchmark
|
|
public void dataOutputStreamOverBufferedFileStream() throws Exception{
|
|
fileOutputStream.getChannel().position(0);
|
|
write(bufferedFileStream);
|
|
fileOutputStream.flush();
|
|
}
|
|
}
|