com.esotericsoftware.kryo.util.FastestStreamFactory Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of kryo-slf4j-shaded Show documentation
Fork of Esoteric Software's Kryo built by Nathan Sweet that replaces Minlog with slf4j as the logging facade. This contains the shaded reflectasm jar to prevent conflicts with other versions of asm.
The newest version!
/* Copyright (c) 2008, Nathan Sweet
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
 * conditions are met:
 * 
 * - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
 * disclaimer in the documentation and/or other materials provided with the distribution.
 * - Neither the name of Esoteric Software nor the names of its contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */

package com.esotericsoftware.kryo.util;

import java.io.InputStream;
import java.io.OutputStream;

import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.StreamFactory;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import com.esotericsoftware.kryo.io.UnsafeInput;
import com.esotericsoftware.kryo.io.UnsafeOutput;

/**
 * This StreamFactory tries to provide fastest possible Input/Output streams on a given platform.
 * It may return sun.misc.Unsafe based implementations of streams, which are
 * very fast, but not portable across platforms.
 * 
 * @author Roman Levenstein 
 *
 */
public class FastestStreamFactory implements StreamFactory {
	
	static private boolean isUnsafe = UnsafeUtil.unsafe() != null;

	@Override
	public Input getInput() {
		return (isUnsafe)? new UnsafeInput() : new Input();
	}

	@Override
	public Input getInput(int bufferSize) {
		return (isUnsafe)? new UnsafeInput(bufferSize) : new Input(bufferSize);
	}

	@Override
	public Input getInput(byte[] buffer) {
		return (isUnsafe)? new UnsafeInput(buffer) : new Input(buffer);
	}

	@Override
	public Input getInput(byte[] buffer, int offset, int count) {
		return (isUnsafe)? new UnsafeInput(buffer, offset, count) : new Input(buffer, offset, count);
	}

	@Override
	public Input getInput(InputStream inputStream) {
		return (isUnsafe)? new UnsafeInput(inputStream) : new Input(inputStream);
	}

	@Override
	public Input getInput(InputStream inputStream, int bufferSize) {
		return (isUnsafe)? new UnsafeInput(inputStream, bufferSize) : new Input(inputStream, bufferSize);
	}

	@Override
	public Output getOutput() {
		return (isUnsafe)? new UnsafeOutput() : new Output();
	}

	@Override
	public Output getOutput(int bufferSize) {
		return (isUnsafe)? new UnsafeOutput(bufferSize) : new Output(bufferSize);
	}

	@Override
	public Output getOutput(int bufferSize, int maxBufferSize) {
		return (isUnsafe)? new UnsafeOutput(bufferSize, maxBufferSize) : new Output(bufferSize, maxBufferSize);
	}

	@Override
	public Output getOutput(byte[] buffer) {
		return (isUnsafe)? new UnsafeOutput(buffer) : new Output(buffer);
	}

	@Override
	public Output getOutput(byte[] buffer, int maxBufferSize) {
		return (isUnsafe)? new UnsafeOutput(buffer, maxBufferSize) : new Output(buffer, maxBufferSize);
	}

	@Override
	public Output getOutput(OutputStream outputStream) {
		return (isUnsafe)? new UnsafeOutput(outputStream) : new Output(outputStream);
	}

	@Override
	public Output getOutput(OutputStream outputStream, int bufferSize) {
		return (isUnsafe)? new UnsafeOutput(outputStream, bufferSize) : new Output(outputStream, bufferSize);
	}

	@Override
	public void setKryo(Kryo kryo) {
		// Only use Unsafe-based streams if this Kryo instance supports it
		//isUnsafe = UnsafeUtil.unsafe() != null && kryo.getUnsafe();
	}

}