| OLD | NEW |
| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 NET_NQE_THROUGHPUT_ANALYZER_H_ | 5 #ifndef NET_NQE_THROUGHPUT_ANALYZER_H_ |
| 6 #define NET_NQE_THROUGHPUT_ANALYZER_H_ | 6 #define NET_NQE_THROUGHPUT_ANALYZER_H_ |
| 7 | 7 |
| 8 #include <stdint.h> | 8 #include <stdint.h> |
| 9 | 9 |
| 10 #include "base/callback.h" | 10 #include "base/callback.h" |
| 11 #include "base/containers/hash_tables.h" | 11 #include "base/containers/hash_tables.h" |
| 12 #include "base/macros.h" | 12 #include "base/macros.h" |
| 13 #include "base/memory/ref_counted.h" | 13 #include "base/memory/ref_counted.h" |
| 14 #include "base/threading/thread_checker.h" | 14 #include "base/threading/thread_checker.h" |
| 15 #include "base/time/time.h" | 15 #include "base/time/time.h" |
| 16 #include "net/base/net_export.h" | 16 #include "net/base/net_export.h" |
| 17 | 17 |
| 18 namespace { | 18 namespace { |
| 19 typedef base::Callback<void(int32_t)> ThroughputObservationCallback; | 19 typedef base::Callback<void(int32_t)> ThroughputObservationCallback; |
| 20 } | 20 } |
| 21 | 21 |
| 22 namespace base { | 22 namespace base { |
| 23 class SingleThreadTaskRunner; | 23 class SingleThreadTaskRunner; |
| 24 } | 24 } |
| 25 | 25 |
| 26 namespace net { | 26 namespace net { |
| 27 | 27 |
| 28 class NetworkQualityEstimatorParams; |
| 28 class URLRequest; | 29 class URLRequest; |
| 29 | 30 |
| 30 namespace nqe { | 31 namespace nqe { |
| 31 | 32 |
| 32 namespace internal { | 33 namespace internal { |
| 33 | 34 |
| 34 class NetworkQualityEstimatorParams; | |
| 35 | |
| 36 // Makes throughput observations. Polls NetworkActivityMonitor | 35 // Makes throughput observations. Polls NetworkActivityMonitor |
| 37 // (TrafficStats on Android) to count number of bits received over throughput | 36 // (TrafficStats on Android) to count number of bits received over throughput |
| 38 // observation windows in accordance with the following rules: | 37 // observation windows in accordance with the following rules: |
| 39 // (1) A new window of observation begins any time a URL request header is | 38 // (1) A new window of observation begins any time a URL request header is |
| 40 // about to be sent, or a request completes or is destroyed. | 39 // about to be sent, or a request completes or is destroyed. |
| 41 // (2) A request is "active" if its headers are sent, but it hasn't completed, | 40 // (2) A request is "active" if its headers are sent, but it hasn't completed, |
| 42 // and "local" if destined to local host. If at any time during a | 41 // and "local" if destined to local host. If at any time during a |
| 43 // throughput observation window there is an active, local request, the | 42 // throughput observation window there is an active, local request, the |
| 44 // window is discarded. | 43 // window is discarded. |
| 45 // (3) If less than 32KB is received over the network during a window of | 44 // (3) If less than 32KB is received over the network during a window of |
| (...skipping 136 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 182 DISALLOW_COPY_AND_ASSIGN(ThroughputAnalyzer); | 181 DISALLOW_COPY_AND_ASSIGN(ThroughputAnalyzer); |
| 183 }; | 182 }; |
| 184 | 183 |
| 185 } // namespace internal | 184 } // namespace internal |
| 186 | 185 |
| 187 } // namespace nqe | 186 } // namespace nqe |
| 188 | 187 |
| 189 } // namespace net | 188 } // namespace net |
| 190 | 189 |
| 191 #endif // NET_NQE_THROUGHPUT_ANALYZER_H_ | 190 #endif // NET_NQE_THROUGHPUT_ANALYZER_H_ |
| OLD | NEW |