OLD | NEW |
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_ | |
OLD | NEW |