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The API JAR of the XNIO project

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/*
 * JBoss, Home of Professional Open Source
 * Copyright 2011, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.xnio;

import java.nio.Buffer;
import java.nio.ByteBuffer;

/**
 * A simple allocator for buffers.
 *
 * @param  the buffer type
 *
 * @author David M. Lloyd
 */
public interface BufferAllocator {

    /**
     * Allocate a buffer of the given size.
     *
     * @param size the size
     * @return the buffer
     * @throws IllegalArgumentException if the given buffer size is less than zero
     */
    B allocate(int size) throws IllegalArgumentException;

    /**
     * A simple allocator for heap-array-backed byte buffers.
     */
    BufferAllocator BYTE_BUFFER_ALLOCATOR = new BufferAllocator() {
        public ByteBuffer allocate(final int size) {
            return ByteBuffer.allocate(size);
        }
    };

    /**
     * A simple allocator for direct byte buffers.
     */
    BufferAllocator DIRECT_BYTE_BUFFER_ALLOCATOR = new BufferAllocator() {
        public ByteBuffer allocate(final int size) {
            return ByteBuffer.allocateDirect(size);
        }
    };
}