| /* |
| * Copyright 2000-2005 The Apache Software Foundation |
| * |
| * Licensed 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; |
| |
| /** Stdlib |
| * |
| * @author Mladen Turk |
| * @version $Revision$, $Date$ |
| */ |
| |
| public class Stdlib { |
| |
| /** |
| * Read from plain memory |
| * @param dst Destination byte array |
| * @param src Source memory address |
| * @param sz Number of bytes to copy. |
| */ |
| public static native boolean memread(byte [] dst, long src, int sz); |
| |
| /** |
| * Write to plain memory |
| * @param dst Destination memory address |
| * @param src Source byte array |
| * @param sz Number of bytes to copy. |
| */ |
| public static native boolean memwrite(long dst, byte [] src, int sz); |
| |
| /** |
| * Sets buffers to a specified character |
| * @param dst Destination memory address |
| * @param c Character to set. |
| * @param sz Number of characters. |
| */ |
| public static native boolean memset(long dst, int c, int sz); |
| |
| /** |
| * Allocates memory blocks. |
| * @param sz Bytes to allocate. |
| */ |
| public static native long malloc(int sz); |
| |
| /** |
| * Reallocate memory blocks. |
| * @param mem Pointer to previously allocated memory block. |
| * @param sz New size in bytes. |
| */ |
| public static native long realloc(long mem, int sz); |
| |
| /** |
| * Allocates an array in memory with elements initialized to 0. |
| * @param num Number of elements. |
| * @param sz Length in bytes of each element. |
| */ |
| public static native long calloc(long num, int sz); |
| |
| /** |
| * Deallocates or frees a memory block. |
| * @param mem Previously allocated memory block to be freed. |
| */ |
| public static native void free(long mem); |
| |
| /** |
| * Get current process pid. |
| * @return current pid or < 1 in case of error. |
| */ |
| public static native int getpid(); |
| |
| /** |
| * Get current process parent pid. |
| * @return parent pid or < 1 in case of error. |
| */ |
| public static native int getppid(); |
| |
| } |