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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 #ifndef WEBKIT_FILEAPI_SYNCABLE_LOCAL_FILE_CHANGE_TRACKER_H_ | 5 #ifndef WEBKIT_FILEAPI_SYNCABLE_LOCAL_FILE_CHANGE_TRACKER_H_ |
| 6 #define WEBKIT_FILEAPI_SYNCABLE_LOCAL_FILE_CHANGE_TRACKER_H_ | 6 #define WEBKIT_FILEAPI_SYNCABLE_LOCAL_FILE_CHANGE_TRACKER_H_ |
| 7 | 7 |
| 8 #include <deque> | 8 #include <deque> |
| 9 #include <map> | 9 #include <map> |
| 10 #include <string> | 10 #include <string> |
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| 32 // Tracks local file changes for cloud-backed file systems. | 32 // Tracks local file changes for cloud-backed file systems. |
| 33 // All methods must be called on the file_task_runner given to the constructor. | 33 // All methods must be called on the file_task_runner given to the constructor. |
| 34 // Owned by FileSystemContext. | 34 // Owned by FileSystemContext. |
| 35 class WEBKIT_STORAGE_EXPORT LocalFileChangeTracker | 35 class WEBKIT_STORAGE_EXPORT LocalFileChangeTracker |
| 36 : public FileUpdateObserver, | 36 : public FileUpdateObserver, |
| 37 public FileChangeObserver { | 37 public FileChangeObserver { |
| 38 public: | 38 public: |
| 39 // |file_task_runner| must be the one where the observee file operations run. | 39 // |file_task_runner| must be the one where the observee file operations run. |
| 40 // (So that we can make sure DB operations are done before actual update | 40 // (So that we can make sure DB operations are done before actual update |
| 41 // happens) | 41 // happens) |
| 42 LocalFileChangeTracker(const FilePath& base_path, | 42 LocalFileChangeTracker(const base::FilePath& base_path, |
| 43 base::SequencedTaskRunner* file_task_runner); | 43 base::SequencedTaskRunner* file_task_runner); |
| 44 virtual ~LocalFileChangeTracker(); | 44 virtual ~LocalFileChangeTracker(); |
| 45 | 45 |
| 46 // FileUpdateObserver overrides. | 46 // FileUpdateObserver overrides. |
| 47 virtual void OnStartUpdate(const FileSystemURL& url) OVERRIDE; | 47 virtual void OnStartUpdate(const FileSystemURL& url) OVERRIDE; |
| 48 virtual void OnUpdate(const FileSystemURL& url, int64 delta) OVERRIDE {} | 48 virtual void OnUpdate(const FileSystemURL& url, int64 delta) OVERRIDE {} |
| 49 virtual void OnEndUpdate(const FileSystemURL& url) OVERRIDE; | 49 virtual void OnEndUpdate(const FileSystemURL& url) OVERRIDE; |
| 50 | 50 |
| 51 // FileChangeObserver overrides. | 51 // FileChangeObserver overrides. |
| 52 virtual void OnCreateFile(const FileSystemURL& url) OVERRIDE; | 52 virtual void OnCreateFile(const FileSystemURL& url) OVERRIDE; |
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| 133 // This can be accessed on any threads (with num_changes_lock_). | 133 // This can be accessed on any threads (with num_changes_lock_). |
| 134 int64 num_changes_; | 134 int64 num_changes_; |
| 135 mutable base::Lock num_changes_lock_; | 135 mutable base::Lock num_changes_lock_; |
| 136 | 136 |
| 137 DISALLOW_COPY_AND_ASSIGN(LocalFileChangeTracker); | 137 DISALLOW_COPY_AND_ASSIGN(LocalFileChangeTracker); |
| 138 }; | 138 }; |
| 139 | 139 |
| 140 } // namespace fileapi | 140 } // namespace fileapi |
| 141 | 141 |
| 142 #endif // WEBKIT_FILEAPI_SYNCABLE_LOCAL_FILE_CHANGE_TRACKER_H_ | 142 #endif // WEBKIT_FILEAPI_SYNCABLE_LOCAL_FILE_CHANGE_TRACKER_H_ |
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