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Side by Side Diff: net/nqe/throughput_analyzer.h

Issue 2899453002: Pass parsed network quality estimator params when constructing NQE (Closed)
Patch Set: Rebased Created 3 years, 6 months ago
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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
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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_
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