1/* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements.  See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License.  You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17// BEGIN android-note
18// address length was changed from long to int for performance reasons.
19// END android-note
20
21package org.apache.harmony.luni.platform;
22
23public class MappedPlatformAddress extends PlatformAddress {
24
25    MappedPlatformAddress(int address, long size) {
26        super(address, size);
27    }
28
29    public final void mmapLoad() {
30        memorySpy.rangeCheck(this, 0, (int) size * SIZEOF_JBYTE);
31        osMemory.load(osaddr, size);
32    }
33
34    public final boolean mmapIsLoaded() {
35        memorySpy.rangeCheck(this, 0, (int) size * SIZEOF_JBYTE);
36        return osMemory.isLoaded(osaddr, size);
37    }
38
39    public final void mmapFlush() {
40        memorySpy.rangeCheck(this, 0, (int) size * SIZEOF_JBYTE);
41        osMemory.flush(osaddr, size);
42    }
43
44    public final void free(){
45        if(memorySpy.free(this)){
46            osMemory.unmap(osaddr, size);
47        }
48    }
49
50    public PlatformAddress duplicate(){
51        return PlatformAddressFactory.mapOn(osaddr, size);
52    }
53
54    public final PlatformAddress offsetBytes(int offset) {
55        return PlatformAddressFactory.mapOn(osaddr + offset, size - offset);
56    }
57    // BEGIN android-removed
58    // public final PlatformAddress offsetBytes(long offset) {
59    //     return PlatformAddressFactory.mapOn(osaddr + offset, size - offset);
60    // }
61    // END android-removed
62}
63