https://tomcat.apache.org/: Interface code to the native connector 
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 *  this work for additional information regarding copyright ownership.
 *  The ASF 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
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package org.apache.tomcat.jni;

import java.nio.ByteBuffer;


Buffer

Author:Mladen Turk
/** Buffer
 *
 * @author Mladen Turk
 */
public class Buffer {

    
Allocate a new ByteBuffer from memory

Params:
  • size – The amount of memory to allocate
Returns:The ByteBuffer with allocated memory
/**
     * Allocate a new ByteBuffer from memory
     * @param size The amount of memory to allocate
     * @return The ByteBuffer with allocated memory
     */
    public static native ByteBuffer malloc(int size);

    
Allocate a new ByteBuffer from memory and set all of the memory to 0

Params:
  • num – Number of elements.
  • size – Length in bytes of each element.
Returns:The ByteBuffer with allocated memory
/**
     * Allocate a new ByteBuffer from memory and set all of the memory to 0
     * @param num Number of elements.
     * @param size Length in bytes of each element.
     * @return The ByteBuffer with allocated memory
     */
    public static native ByteBuffer calloc(int num, int size);

    
Allocate a new ByteBuffer from a pool

Params:
  • p – The pool to allocate from
  • size – The amount of memory to allocate
Returns:The ByteBuffer with allocated memory
/**
     * Allocate a new ByteBuffer from a pool
     * @param p The pool to allocate from
     * @param size The amount of memory to allocate
     * @return The ByteBuffer with allocated memory
     */
    public static native ByteBuffer palloc(long p, int size);

    
Allocate a new ByteBuffer from a pool and set all of the memory to 0

Params:
  • p – The pool to allocate from
  • size – The amount of memory to allocate
Returns:The ByteBuffer with allocated memory
/**
     * Allocate a new ByteBuffer from a pool and set all of the memory to 0
     * @param p The pool to allocate from
     * @param size The amount of memory to allocate
     * @return The ByteBuffer with allocated memory
     */
    public static native ByteBuffer pcalloc(long p, int size);

    
Allocate a new ByteBuffer from already allocated memory.

Allocated memory must be provided from call to the
Stdlib.alloc or Stdlib.calloc methods.

Params:
  • mem – The memory to use
  • size – The amount of memory to use
Returns:The ByteBuffer with attached memory
/**
     * Allocate a new ByteBuffer from already allocated memory.
     * <br>Allocated memory must be provided from call to the
     * Stdlib.alloc or Stdlib.calloc methods.
     * @param mem The memory to use
     * @param size The amount of memory to use
     * @return The ByteBuffer with attached memory
     */
    public static native ByteBuffer create(long mem, int size);

    
Deallocates or frees a memory block used by ByteBuffer

Warning : Call this method only on ByteBuffers
that were created by calling Buffer.alloc or Buffer.calloc.

Params:
  • buf – Previously allocated ByteBuffer to be freed.
/**
     * Deallocates or frees a memory block used by ByteBuffer
     * <br><b>Warning :</b> Call this method only on ByteBuffers
     * that were created by calling Buffer.alloc or Buffer.calloc.
     * @param buf Previously allocated ByteBuffer to be freed.
     */
    public static native void free(ByteBuffer buf);

    
Returns the memory address of the ByteBuffer.

Params:
  • buf – Previously allocated ByteBuffer.
Returns:the memory address
/**
     * Returns the memory address of the ByteBuffer.
     * @param buf Previously allocated ByteBuffer.
     * @return the memory address
     */
    public static native long address(ByteBuffer buf);

    
Returns the allocated memory size of the ByteBuffer.

Params:
  • buf – Previously allocated ByteBuffer.
Returns:the size
/**
     * Returns the allocated memory size of the ByteBuffer.
     * @param buf Previously allocated ByteBuffer.
     * @return the size
     */
    public static native long size(ByteBuffer buf);

}