76 lines
2.5 KiB
Java
76 lines
2.5 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.tomcat.jni;
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/** Mmap
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*
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* @author Mladen Turk
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*/
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public class Mmap {
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/** MMap opened for reading */
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public static final int APR_MMAP_READ = 1;
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/** MMap opened for writing */
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public static final int APR_MMAP_WRITE = 2;
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/**
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* Create a new mmap'ed file out of an existing APR file.
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* @param file The file turn into an mmap.
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* @param offset The offset into the file to start the data pointer at.
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* @param size The size of the file
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* @param flag bit-wise or of:
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* <PRE>
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* APR_MMAP_READ MMap opened for reading
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* APR_MMAP_WRITE MMap opened for writing
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* </PRE>
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* @param pool The pool to use when creating the mmap.
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* @return The newly created mmap'ed file.
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* @throws Error Error creating memory mapping
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*/
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public static native long create(long file, long offset, long size, int flag, long pool)
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throws Error;
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/**
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* Duplicate the specified MMAP.
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* @param mmap The mmap to duplicate.
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* @param pool The pool to use for new_mmap.
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* @return Duplicated mmap'ed file.
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* @throws Error Error duplicating memory mapping
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*/
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public static native long dup(long mmap, long pool)
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throws Error;
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/**
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* Remove a mmap'ed.
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* @param mm The mmap'ed file.
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* @return the operation status
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*/
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public static native int delete(long mm);
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/**
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* Move the pointer into the mmap'ed file to the specified offset.
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* @param mm The mmap'ed file.
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* @param offset The offset to move to.
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* @return The pointer to the offset specified.
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* @throws Error Error reading file
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*/
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public static native long offset(long mm, long offset)
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throws Error;
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}
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