BlockGuardOs.java revision 52724d3ebd4ccaaa4b9f5576e329d4272cde8ea9 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * 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
17package libcore.io;
18
19import dalvik.system.BlockGuard;
20import java.io.FileDescriptor;
21
22/**
23 * Informs BlockGuard of any activity it should be aware of.
24 */
25public class BlockGuardOs extends ForwardingOs {
26    public BlockGuardOs(Os os) {
27        super(os);
28    }
29
30    public void fdatasync(FileDescriptor fd) throws ErrnoException {
31        BlockGuard.getThreadPolicy().onWriteToDisk();
32        os.fdatasync(fd);
33    }
34
35    public void fsync(FileDescriptor fd) throws ErrnoException {
36        BlockGuard.getThreadPolicy().onWriteToDisk();
37        os.fsync(fd);
38    }
39}
40