| /* |
| * 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. |
| */ |
| public static native long address(ByteBuffer buf); |
| |
| /** |
| * Returns the allocated memory size of the ByteBuffer. |
| * @param buf Previously allocated ByteBuffer. |
| */ |
| public static native long size(ByteBuffer buf); |
| |
| } |