92 lines
3.1 KiB
Java
92 lines
3.1 KiB
Java
/*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* 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
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package org.apache.tomcat.jni;
|
|
|
|
import java.nio.ByteBuffer;
|
|
|
|
/** Buffer
|
|
*
|
|
* @author Mladen Turk
|
|
*/
|
|
public class Buffer {
|
|
|
|
/**
|
|
* 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
|
|
* @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
|
|
* @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
|
|
* @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.
|
|
* <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
|
|
* <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.
|
|
* @param buf Previously allocated ByteBuffer.
|
|
* @return the memory address
|
|
*/
|
|
public static native long address(ByteBuffer buf);
|
|
|
|
/**
|
|
* Returns the allocated memory size of the ByteBuffer.
|
|
* @param buf Previously allocated ByteBuffer.
|
|
* @return the size
|
|
*/
|
|
public static native long size(ByteBuffer buf);
|
|
|
|
}
|