Java ByteBuffer Clear free(ByteBuffer buffer)

Description

Releases memory held by the given direct ByteBuffer

License

Apache License

Parameter

Parameter	Description
buffer	buffer to free

Declaration

public static void free(ByteBuffer buffer) 

Method Source Code

//package com.java2s;
/*/* w  w  w. j ava  2s .c  o  m*/
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Metamarkets licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import sun.misc.Cleaner;
import sun.nio.ch.DirectBuffer;
import java.nio.ByteBuffer;

public class Main {
    /**
     * Releases memory held by the given direct ByteBuffer
     *
     * @param buffer buffer to free
     */
    public static void free(ByteBuffer buffer) {
        if (buffer.isDirect()) {
            clean((DirectBuffer) buffer);
        }
    }

    private static void clean(DirectBuffer buffer) {
        final Cleaner cleaner = buffer.cleaner();
        if (cleaner != null) {
            cleaner.clean();
        }
    }
}

Related

1. clearRemaining(ByteBuffer buffer)
2. clearRemainingFrame(ByteBuffer buffer, int position)
3. clearString(ByteBuffer buffer)
4. fillBuffer(ReadableByteChannel channel, ByteBuffer buf, boolean clear)
5. free(ByteBuffer buffer)
6. free(ByteBuffer byteBuffer)
7. freeDB(ByteBuffer buffer)
8. freeMemory(ByteBuffer buffer)