forked from typetools/jdk
/
ByteArrayInputStreamTransfer.java
103 lines (90 loc) · 3.28 KB
/
ByteArrayInputStreamTransfer.java
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/*
* Copyright (c) 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.io;
import org.openjdk.jmh.annotations.*;
import java.io.*;
import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.TimeUnit;
import java.util.zip.GZIPOutputStream;
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@Fork(2)
@Measurement(iterations = 6, time = 1)
@Warmup(iterations = 4, time = 2)
@State(Scope.Thread)
public class ByteArrayInputStreamTransfer {
@Param({"1024", "102400", "1024000"})
int size;
ByteArrayInputStream is;
final ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
final BufferedOutputStream bufferedBAOS = new BufferedOutputStream(byteArrayOutputStream);
File tempFile;
@Setup(Level.Iteration)
public void prepareData() throws Exception {
byte[] bytes = new byte[size];
ThreadLocalRandom.current().nextBytes(bytes);
is = new ByteArrayInputStream(bytes);
tempFile = File.createTempFile("ByteArrayInputStreamTransfer", "out");
}
@TearDown(Level.Iteration)
public void cleanData() throws Exception {
tempFile.delete();
}
@Setup(Level.Invocation)
public void resetStreams() throws Exception {
is.reset();
bufferedBAOS.flush();
byteArrayOutputStream.reset();
}
@Benchmark
public long transferToBAOS() throws Exception {
return is.transferTo(byteArrayOutputStream);
}
@Benchmark
public OutputStream transferToBufferedBAOS() throws Exception {
is.transferTo(bufferedBAOS);
bufferedBAOS.flush();
return bufferedBAOS;
}
@Benchmark
public OutputStream transferToGZIP() throws IOException {
try (OutputStream os = new GZIPOutputStream(byteArrayOutputStream);) {
is.transferTo(os);
return os;
}
}
@Benchmark
public OutputStream transferToFile() throws IOException {
try (OutputStream os = new FileOutputStream(tempFile);) {
is.transferTo(os);
return os;
}
}
@Benchmark
public OutputStream transferToDataFile() throws IOException {
try (OutputStream os = new DataOutputStream(new FileOutputStream(tempFile));) {
is.transferTo(os);
return os;
}
}
}