1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // Cross platform methods for FilePathWatcher. See the various platform
6 // specific implementation files, too.
7 
8 #include "base/files/file_path_watcher.h"
9 
10 #include "base/logging.h"
11 #include "base/message_loop/message_loop.h"
12 #include "build/build_config.h"
13 
14 #if defined(OS_MACOSX) && !defined(OS_IOS)
15 #include "base/mac/mac_util.h"
16 #endif
17 
18 namespace base {
19 
~FilePathWatcher()20 FilePathWatcher::~FilePathWatcher() {
21   impl_->Cancel();
22 }
23 
24 // static
CancelWatch(const scoped_refptr<PlatformDelegate> & delegate)25 void FilePathWatcher::CancelWatch(
26     const scoped_refptr<PlatformDelegate>& delegate) {
27   delegate->CancelOnMessageLoopThread();
28 }
29 
30 // static
RecursiveWatchAvailable()31 bool FilePathWatcher::RecursiveWatchAvailable() {
32 #if defined(OS_MACOSX) && !defined(OS_IOS)
33   // FSEvents isn't available on iOS and is broken on OSX 10.6 and earlier.
34   // See http://crbug.com/54822#c31
35   return mac::IsOSLionOrLater();
36 #elif defined(OS_WIN) || defined(OS_LINUX) || defined(OS_ANDROID)
37   return true;
38 #else
39   return false;
40 #endif
41 }
42 
PlatformDelegate()43 FilePathWatcher::PlatformDelegate::PlatformDelegate(): cancelled_(false) {
44 }
45 
~PlatformDelegate()46 FilePathWatcher::PlatformDelegate::~PlatformDelegate() {
47   DCHECK(is_cancelled());
48 }
49 
Watch(const FilePath & path,bool recursive,const Callback & callback)50 bool FilePathWatcher::Watch(const FilePath& path,
51                             bool recursive,
52                             const Callback& callback) {
53   DCHECK(path.IsAbsolute());
54   return impl_->Watch(path, recursive, callback);
55 }
56 
57 }  // namespace base
58