128 lines
3.9 KiB
Java
128 lines
3.9 KiB
Java
/*
|
|
* Copyright (c) 2020, 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.net;
|
|
|
|
import java.io.IOException;
|
|
import java.net.StandardProtocolFamily;
|
|
import java.net.UnixDomainSocketAddress;
|
|
import java.nio.ByteBuffer;
|
|
import java.nio.channels.ClosedChannelException;
|
|
import java.nio.channels.ServerSocketChannel;
|
|
import java.nio.channels.SocketChannel;
|
|
import java.nio.file.*;
|
|
import java.util.concurrent.TimeUnit;
|
|
import java.util.concurrent.atomic.AtomicInteger;
|
|
|
|
import org.openjdk.jmh.annotations.*;
|
|
|
|
/**
|
|
* Tests the overheads of I/O API.
|
|
* This test is known to depend heavily on network conditions and paltform.
|
|
*/
|
|
@BenchmarkMode(Mode.Throughput)
|
|
@OutputTimeUnit(TimeUnit.MILLISECONDS)
|
|
@State(Scope.Thread)
|
|
@Warmup(iterations = 5, time = 1)
|
|
@Measurement(iterations = 5, time = 1)
|
|
@Fork(value = 3)
|
|
public class UnixSocketChannelReadWrite {
|
|
|
|
private ServerSocketChannel ssc;
|
|
private SocketChannel s1, s2;
|
|
private ReadThread rt;
|
|
private ByteBuffer bb = ByteBuffer.allocate(1);
|
|
|
|
private static volatile String tempDir;
|
|
private static final AtomicInteger count = new AtomicInteger(0);
|
|
private volatile Path socket;
|
|
|
|
static {
|
|
try {
|
|
Path p = Files.createTempDirectory("readWriteTest");
|
|
tempDir = p.toString();
|
|
} catch (IOException e) {
|
|
tempDir = null;
|
|
}
|
|
}
|
|
|
|
private ServerSocketChannel getServerSocketChannel() throws IOException {
|
|
int next = count.incrementAndGet();
|
|
socket = Paths.get(tempDir, Integer.toString(next));
|
|
UnixDomainSocketAddress addr = UnixDomainSocketAddress.of(socket);
|
|
ServerSocketChannel c = ServerSocketChannel.open(StandardProtocolFamily.UNIX);
|
|
c.bind(addr);
|
|
return c;
|
|
}
|
|
|
|
@Setup(Level.Trial)
|
|
public void beforeRun() throws IOException {
|
|
ssc = getServerSocketChannel();
|
|
s1 = SocketChannel.open(ssc.getLocalAddress());
|
|
s2 = ssc.accept();
|
|
|
|
rt = new ReadThread(s2);
|
|
rt.start();
|
|
|
|
bb.put((byte) 47);
|
|
bb.flip();
|
|
}
|
|
|
|
@TearDown(Level.Trial)
|
|
public void afterRun() throws IOException, InterruptedException {
|
|
s1.close();
|
|
s2.close();
|
|
ssc.close();
|
|
Files.delete(socket);
|
|
Files.delete(Path.of(tempDir));
|
|
rt.join();
|
|
}
|
|
|
|
@Benchmark
|
|
public void test() throws IOException {
|
|
s1.write(bb);
|
|
bb.flip();
|
|
}
|
|
|
|
static class ReadThread extends Thread {
|
|
private SocketChannel sc;
|
|
|
|
public ReadThread(SocketChannel s2) {
|
|
this.sc = s2;
|
|
}
|
|
|
|
public void run() {
|
|
try {
|
|
ByteBuffer bb = ByteBuffer.allocate(1);
|
|
while (sc.read(bb) > 0) {
|
|
bb.flip();
|
|
}
|
|
} catch (ClosedChannelException ex) {
|
|
// shutdown time
|
|
} catch (IOException e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|