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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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_MANAGER_H_ | 5 #ifndef WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_RESERVATION_MANAGER_H_ |
| 6 #define WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_RESERVATION_MANAGER_H_ | 6 #define WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_RESERVATION_MANAGER_H_ |
| 7 | 7 |
| 8 #include <map> | 8 #include <map> |
| 9 #include <utility> | 9 #include <utility> |
| 10 | 10 |
| 11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
| 12 #include "base/callback_forward.h" | 12 #include "base/callback_forward.h" |
| 13 #include "base/files/file.h" | 13 #include "base/files/file.h" |
| 14 #include "base/memory/ref_counted.h" | 14 #include "base/memory/ref_counted.h" |
| 15 #include "base/memory/weak_ptr.h" | 15 #include "base/memory/weak_ptr.h" |
| 16 #include "url/gurl.h" | 16 #include "url/gurl.h" |
| 17 #include "webkit/browser/webkit_storage_browser_export.h" | 17 #include "webkit/browser/storage_export.h" |
| 18 #include "webkit/common/fileapi/file_system_types.h" | 18 #include "webkit/common/fileapi/file_system_types.h" |
| 19 | 19 |
| 20 namespace content { | 20 namespace content { |
| 21 class QuotaReservationManagerTest; | 21 class QuotaReservationManagerTest; |
| 22 } | 22 } |
| 23 | 23 |
| 24 namespace storage { | 24 namespace storage { |
| 25 | 25 |
| 26 class QuotaReservation; | 26 class QuotaReservation; |
| 27 class QuotaReservationBuffer; | 27 class QuotaReservationBuffer; |
| 28 class OpenFileHandle; | 28 class OpenFileHandle; |
| 29 class OpenFileHandleContext; | 29 class OpenFileHandleContext; |
| 30 | 30 |
| 31 class WEBKIT_STORAGE_BROWSER_EXPORT QuotaReservationManager { | 31 class STORAGE_EXPORT QuotaReservationManager { |
| 32 public: | 32 public: |
| 33 // Callback for ReserveQuota. When this callback returns false, ReserveQuota | 33 // Callback for ReserveQuota. When this callback returns false, ReserveQuota |
| 34 // operation should be reverted. | 34 // operation should be reverted. |
| 35 typedef base::Callback<bool(base::File::Error error, int64 delta)> | 35 typedef base::Callback<bool(base::File::Error error, int64 delta)> |
| 36 ReserveQuotaCallback; | 36 ReserveQuotaCallback; |
| 37 | 37 |
| 38 // An abstraction of backing quota system. | 38 // An abstraction of backing quota system. |
| 39 class WEBKIT_STORAGE_BROWSER_EXPORT QuotaBackend { | 39 class STORAGE_EXPORT QuotaBackend { |
| 40 public: | 40 public: |
| 41 QuotaBackend() {} | 41 QuotaBackend() {} |
| 42 virtual ~QuotaBackend() {} | 42 virtual ~QuotaBackend() {} |
| 43 | 43 |
| 44 // Reserves or reclaims |delta| of quota for |origin| and |type| pair. | 44 // Reserves or reclaims |delta| of quota for |origin| and |type| pair. |
| 45 // Reserved quota should be counted as usage, but it should be on-memory | 45 // Reserved quota should be counted as usage, but it should be on-memory |
| 46 // and be cleared by a browser restart. | 46 // and be cleared by a browser restart. |
| 47 // Invokes |callback| upon completion with an error code. | 47 // Invokes |callback| upon completion with an error code. |
| 48 // |callback| should return false if it can't accept the reservation, in | 48 // |callback| should return false if it can't accept the reservation, in |
| 49 // that case, the backend should roll back the reservation. | 49 // that case, the backend should roll back the reservation. |
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| 118 | 118 |
| 119 base::SequenceChecker sequence_checker_; | 119 base::SequenceChecker sequence_checker_; |
| 120 base::WeakPtrFactory<QuotaReservationManager> weak_ptr_factory_; | 120 base::WeakPtrFactory<QuotaReservationManager> weak_ptr_factory_; |
| 121 | 121 |
| 122 DISALLOW_COPY_AND_ASSIGN(QuotaReservationManager); | 122 DISALLOW_COPY_AND_ASSIGN(QuotaReservationManager); |
| 123 }; | 123 }; |
| 124 | 124 |
| 125 } // namespace storage | 125 } // namespace storage |
| 126 | 126 |
| 127 #endif // WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_RESERVATION_MANAGER_H_ | 127 #endif // WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_RESERVATION_MANAGER_H_ |
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