mirror of
https://github.com/openjdk/jdk.git
synced 2026-01-28 12:09:14 +00:00
73 lines
2.3 KiB
Java
73 lines
2.3 KiB
Java
/*
|
|
* Copyright (c) 2025, 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 java.nio.CharBuffer;
|
|
import java.util.concurrent.TimeUnit;
|
|
|
|
import org.openjdk.jmh.annotations.Benchmark;
|
|
import org.openjdk.jmh.annotations.Fork;
|
|
import org.openjdk.jmh.annotations.Measurement;
|
|
import org.openjdk.jmh.annotations.Scope;
|
|
import org.openjdk.jmh.annotations.State;
|
|
import org.openjdk.jmh.annotations.Warmup;
|
|
|
|
/**
|
|
* Benchmark for bulk get methods of a {@code CharBuffer} created from a
|
|
* {@code CharSequence}.
|
|
*/
|
|
|
|
@Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
|
|
@Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
|
|
@State(Scope.Benchmark)
|
|
@Fork(1)
|
|
public class StringCharBufferBulkTransfer {
|
|
private static final int LENGTH = 16384;
|
|
|
|
char[] buf = new char[LENGTH];
|
|
CharBuffer cb = CharBuffer.wrap(new String(buf));
|
|
char[] dst = new char[LENGTH];
|
|
CharBuffer cbw = CharBuffer.allocate(LENGTH);
|
|
|
|
@Benchmark
|
|
public void absoluteBulkGet() {
|
|
cb.get(0, dst, 0, dst.length);
|
|
}
|
|
|
|
@Benchmark
|
|
public void relativeBulkGet() {
|
|
cb.get(dst, 0, dst.length);
|
|
cb.position(0);
|
|
}
|
|
|
|
@Benchmark
|
|
public void getChars() {
|
|
cb.getChars(0, LENGTH, dst, 0);
|
|
}
|
|
|
|
@Benchmark
|
|
public void absoluteBulkPut() {
|
|
cbw.put(0, cb, 0, dst.length);
|
|
}
|
|
}
|