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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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_BROWSER_FILEAPI_QUOTA_QUOTA_RESERVATION_BUFFER_H_ | 5 #include "storage/browser/fileapi/quota/quota_reservation_buffer.h" |
| 6 #define WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_RESERVATION_BUFFER_H_ | |
| 7 | |
| 8 #include <map> | |
| 9 | |
| 10 #include "base/basictypes.h" | |
| 11 #include "base/files/file.h" | |
| 12 #include "base/files/file_path.h" | |
| 13 #include "base/memory/ref_counted.h" | |
| 14 #include "base/memory/weak_ptr.h" | |
| 15 #include "url/gurl.h" | |
| 16 #include "webkit/browser/storage_browser_export.h" | |
| 17 #include "webkit/common/fileapi/file_system_types.h" | |
| 18 | |
| 19 namespace storage { | |
| 20 | |
| 21 class QuotaReservation; | |
| 22 class OpenFileHandle; | |
| 23 class OpenFileHandleContext; | |
| 24 class QuotaReservationManager; | |
| 25 | |
| 26 // QuotaReservationBuffer manages QuotaReservation instances. All consumed | |
| 27 // quota and leaked quota by associated QuotaReservation will be staged in | |
| 28 // QuotaReservationBuffer, and will be committed on a modified file is closed. | |
| 29 // The instance keeps alive while any associated QuotaReservation or | |
| 30 // OpenFileHandle alive. | |
| 31 // This class is usually manipulated only via OpenFileHandle and | |
| 32 // QuotaReservation. | |
| 33 class QuotaReservationBuffer : public base::RefCounted<QuotaReservationBuffer> { | |
| 34 public: | |
| 35 QuotaReservationBuffer( | |
| 36 base::WeakPtr<QuotaReservationManager> reservation_manager, | |
| 37 const GURL& origin, | |
| 38 FileSystemType type); | |
| 39 | |
| 40 scoped_refptr<QuotaReservation> CreateReservation(); | |
| 41 scoped_ptr<OpenFileHandle> GetOpenFileHandle( | |
| 42 QuotaReservation* reservation, | |
| 43 const base::FilePath& platform_path); | |
| 44 void CommitFileGrowth(int64 quota_consumption, int64 usage_delta); | |
| 45 void DetachOpenFileHandleContext(OpenFileHandleContext* context); | |
| 46 void PutReservationToBuffer(int64 size); | |
| 47 | |
| 48 QuotaReservationManager* reservation_manager() { | |
| 49 return reservation_manager_.get(); | |
| 50 } | |
| 51 | |
| 52 const GURL& origin() const { return origin_; } | |
| 53 FileSystemType type() const { return type_; } | |
| 54 | |
| 55 private: | |
| 56 friend class base::RefCounted<QuotaReservationBuffer>; | |
| 57 virtual ~QuotaReservationBuffer(); | |
| 58 | |
| 59 static bool DecrementDirtyCount( | |
| 60 base::WeakPtr<QuotaReservationManager> reservation_manager, | |
| 61 const GURL& origin, | |
| 62 FileSystemType type, | |
| 63 base::File::Error error, | |
| 64 int64 delta); | |
| 65 | |
| 66 typedef std::map<base::FilePath, OpenFileHandleContext*> | |
| 67 OpenFileHandleContextByPath; | |
| 68 | |
| 69 // Not owned. The destructor of OpenFileHandler should erase itself from | |
| 70 // |open_files_|. | |
| 71 OpenFileHandleContextByPath open_files_; | |
| 72 | |
| 73 base::WeakPtr<QuotaReservationManager> reservation_manager_; | |
| 74 | |
| 75 GURL origin_; | |
| 76 storage::FileSystemType type_; | |
| 77 | |
| 78 int64 reserved_quota_; | |
| 79 | |
| 80 base::SequenceChecker sequence_checker_; | |
| 81 | |
| 82 DISALLOW_COPY_AND_ASSIGN(QuotaReservationBuffer); | |
| 83 }; | |
| 84 | |
| 85 } // namespace storage | |
| 86 | |
| 87 #endif // WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_RESERVATION_BUFFER_H_ | |
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