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1 /* | |
2 * Licensed to the Apache Software Foundation (ASF) under one or more | |
3 * contributor license agreements. See the NOTICE file distributed with | |
4 * this work for additional information regarding copyright ownership. | |
5 * The ASF licenses this file to You under the Apache License, Version 2.0 | |
6 * (the "License"); you may not use this file except in compliance with | |
7 * the License. You may obtain a copy of the License at | |
8 * | |
9 * http://www.apache.org/licenses/LICENSE-2.0 | |
10 * | |
11 * Unless required by applicable law or agreed to in writing, software | |
12 * distributed under the License is distributed on an "AS IS" BASIS, | |
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 * See the License for the specific language governing permissions and | |
15 * limitations under the License. | |
16 */ | |
17 | |
18 package org.apache.tomcat.jni; | |
19 | |
20 /** Mmap | |
21 * | |
22 * @author Mladen Turk | |
23 */ | |
24 public class Mmap { | |
25 /** MMap opened for reading */ | |
26 public static final int APR_MMAP_READ = 1; | |
27 /** MMap opened for writing */ | |
28 public static final int APR_MMAP_WRITE = 2; | |
29 | |
30 | |
31 /** | |
32 * Create a new mmap'ed file out of an existing APR file. | |
33 * @param file The file turn into an mmap. | |
34 * @param offset The offset into the file to start the data pointer at. | |
35 * @param size The size of the file | |
36 * @param flag bit-wise or of: | |
37 * <PRE> | |
38 * APR_MMAP_READ MMap opened for reading | |
39 * APR_MMAP_WRITE MMap opened for writing | |
40 * </PRE> | |
41 * @param pool The pool to use when creating the mmap. | |
42 * @return The newly created mmap'ed file. | |
43 */ | |
44 public static native long create(long file, long offset, long size, int flag
, long pool) | |
45 throws Error; | |
46 | |
47 /** | |
48 * Duplicate the specified MMAP. | |
49 * @param mmap The mmap to duplicate. | |
50 * @param pool The pool to use for new_mmap. | |
51 * @return Duplicated mmap'ed file. | |
52 */ | |
53 public static native long dup(long mmap, long pool) | |
54 throws Error; | |
55 | |
56 /** | |
57 * Remove a mmap'ed. | |
58 * @param mm The mmap'ed file. | |
59 */ | |
60 public static native int delete(long mm); | |
61 | |
62 /** | |
63 * Move the pointer into the mmap'ed file to the specified offset. | |
64 * @param mm The mmap'ed file. | |
65 * @param offset The offset to move to. | |
66 * @return The pointer to the offset specified. | |
67 */ | |
68 public static native long offset(long mm, long offset) | |
69 throws Error; | |
70 | |
71 } | |
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