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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "base/files/file_path_watcher.h" | 5 #include "base/files/file_path_watcher.h" |
| 6 | 6 |
| 7 #include <errno.h> | 7 #include <errno.h> |
| 8 #include <string.h> | 8 #include <string.h> |
| 9 #include <sys/inotify.h> | 9 #include <sys/inotify.h> |
| 10 #include <sys/ioctl.h> | 10 #include <sys/ioctl.h> |
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| 105 bool is_dir); | 105 bool is_dir); |
| 106 | 106 |
| 107 protected: | 107 protected: |
| 108 virtual ~FilePathWatcherImpl() {} | 108 virtual ~FilePathWatcherImpl() {} |
| 109 | 109 |
| 110 private: | 110 private: |
| 111 // Start watching |path| for changes and notify |delegate| on each change. | 111 // Start watching |path| for changes and notify |delegate| on each change. |
| 112 // Returns true if watch for |path| has been added successfully. | 112 // Returns true if watch for |path| has been added successfully. |
| 113 virtual bool Watch(const FilePath& path, | 113 virtual bool Watch(const FilePath& path, |
| 114 bool recursive, | 114 bool recursive, |
| 115 const FilePathWatcher::Callback& callback) OVERRIDE; | 115 const FilePathWatcher::Callback& callback) override; |
| 116 | 116 |
| 117 // Cancel the watch. This unregisters the instance with InotifyReader. | 117 // Cancel the watch. This unregisters the instance with InotifyReader. |
| 118 virtual void Cancel() OVERRIDE; | 118 virtual void Cancel() override; |
| 119 | 119 |
| 120 // Cleans up and stops observing the message_loop() thread. | 120 // Cleans up and stops observing the message_loop() thread. |
| 121 virtual void CancelOnMessageLoopThread() OVERRIDE; | 121 virtual void CancelOnMessageLoopThread() override; |
| 122 | 122 |
| 123 // Deletion of the FilePathWatcher will call Cancel() to dispose of this | 123 // Deletion of the FilePathWatcher will call Cancel() to dispose of this |
| 124 // object in the right thread. This also observes destruction of the required | 124 // object in the right thread. This also observes destruction of the required |
| 125 // cleanup thread, in case it quits before Cancel() is called. | 125 // cleanup thread, in case it quits before Cancel() is called. |
| 126 virtual void WillDestroyCurrentMessageLoop() OVERRIDE; | 126 virtual void WillDestroyCurrentMessageLoop() override; |
| 127 | 127 |
| 128 // Inotify watches are installed for all directory components of |target_|. A | 128 // Inotify watches are installed for all directory components of |target_|. A |
| 129 // WatchEntry instance holds the watch descriptor for a component and the | 129 // WatchEntry instance holds the watch descriptor for a component and the |
| 130 // subdirectory for that identifies the next component. If a symbolic link | 130 // subdirectory for that identifies the next component. If a symbolic link |
| 131 // is being watched, the target of the link is also kept. | 131 // is being watched, the target of the link is also kept. |
| 132 struct WatchEntry { | 132 struct WatchEntry { |
| 133 explicit WatchEntry(const FilePath::StringType& dirname) | 133 explicit WatchEntry(const FilePath::StringType& dirname) |
| 134 : watch(InotifyReader::kInvalidWatch), | 134 : watch(InotifyReader::kInvalidWatch), |
| 135 subdir(dirname) {} | 135 subdir(dirname) {} |
| 136 | 136 |
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| 660 return watches_[watches_.size() - 1].subdir.empty(); | 660 return watches_[watches_.size() - 1].subdir.empty(); |
| 661 } | 661 } |
| 662 | 662 |
| 663 } // namespace | 663 } // namespace |
| 664 | 664 |
| 665 FilePathWatcher::FilePathWatcher() { | 665 FilePathWatcher::FilePathWatcher() { |
| 666 impl_ = new FilePathWatcherImpl(); | 666 impl_ = new FilePathWatcherImpl(); |
| 667 } | 667 } |
| 668 | 668 |
| 669 } // namespace base | 669 } // namespace base |
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