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/*
* 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;
/** Mmap
*
* @author Mladen Turk
*/
public class Mmap {
/** MMap opened for reading */
public static final int APR_MMAP_READ = 1;
/** MMap opened for writing */
public static final int APR_MMAP_WRITE = 2;
/**
* Create a new mmap'ed file out of an existing APR file.
* @param file The file turn into an mmap.
* @param offset The offset into the file to start the data pointer at.
* @param size The size of the file
* @param flag bit-wise or of:
* <PRE>
* APR_MMAP_READ MMap opened for reading
* APR_MMAP_WRITE MMap opened for writing
* </PRE>
* @param pool The pool to use when creating the mmap.
* @return The newly created mmap'ed file.
*/
public static native long create(long file, long offset, long size, int flag, long pool)
throws Error;
/**
* Duplicate the specified MMAP.
* @param mmap The mmap to duplicate.
* @param pool The pool to use for new_mmap.
* @return Duplicated mmap'ed file.
*/
public static native long dup(long mmap, long pool)
throws Error;
/**
* Remove a mmap'ed.
* @param mm The mmap'ed file.
*/
public static native int delete(long mm);
/**
* Move the pointer into the mmap'ed file to the specified offset.
* @param mm The mmap'ed file.
* @param offset The offset to move to.
* @return The pointer to the offset specified.
*/
public static native long offset(long mm, long offset)
throws Error;
}
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