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1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef COMPONENTS_DATA_USAGE_CORE_DATA_USE_AMORTIZER_H_ | |
6 #define COMPONENTS_DATA_USAGE_CORE_DATA_USE_AMORTIZER_H_ | |
7 | |
8 #include <stdint.h> | |
9 | |
10 #include "base/callback.h" | |
11 #include "base/memory/scoped_ptr.h" | |
12 | |
13 namespace data_usage { | |
14 | |
15 struct DataUse; | |
16 | |
17 // Class that takes in DataUse and amortizes any extra data usage overhead | |
18 // across DataUse objects. | |
19 class DataUseAmortizer { | |
20 public: | |
21 typedef base::Callback<void(scoped_ptr<DataUse>)> DataUseConsumerCallback; | |
22 | |
23 virtual ~DataUseAmortizer() {} | |
24 | |
25 // Amortizes overhead into |data_use|, then passes the it to |callback| once | |
26 // amortization is complete. Amortizers that perform buffering may combine | |
27 // together |data_use| objects with the same |callback| if the |data_use| | |
28 // objects are identical in all ways but their byte counts. | |
29 virtual void AmortizeDataUse(scoped_ptr<DataUse> data_use, | |
30 const DataUseConsumerCallback& callback) = 0; | |
31 | |
32 // Notifies the DataUseAmortizer that some extra bytes have happened that | |
bengr
2015/11/10 18:12:51
Be clearer than "have happened."
sclittle
2015/11/11 02:10:08
Done.
| |
33 // aren't associated with any DataUse objects (e.g. off-the-record traffic). | |
34 virtual void OnExtraBytes(int64_t extra_tx_bytes, int64_t extra_rx_bytes) = 0; | |
35 }; | |
36 | |
37 } // namespace data_usage | |
38 | |
39 #endif // COMPONENTS_DATA_USAGE_CORE_DATA_USE_AMORTIZER_H_ | |
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