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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 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 | 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_NETWORK_QUALITY_ESTIMATOR_H_ | 5 #ifndef NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_ |
6 #define NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_ | 6 #define NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <map> | 10 #include <map> |
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602 | 602 |
603 // Current estimate of the network quality. | 603 // Current estimate of the network quality. |
604 nqe::internal::NetworkQuality network_quality_; | 604 nqe::internal::NetworkQuality network_quality_; |
605 | 605 |
606 // Current effective connection type. It is updated on connection change | 606 // Current effective connection type. It is updated on connection change |
607 // events. It is also updated every time there is network traffic (provided | 607 // events. It is also updated every time there is network traffic (provided |
608 // the last computation was more than | 608 // the last computation was more than |
609 // |effective_connection_type_recomputation_interval_| ago). | 609 // |effective_connection_type_recomputation_interval_| ago). |
610 EffectiveConnectionType effective_connection_type_; | 610 EffectiveConnectionType effective_connection_type_; |
611 | 611 |
612 // Last known value of the wireless signal strength. Set to INT32_MIN if | 612 // Last known value of the wireless signal strength level. If the signal |
613 // unavailable. |signal_strength_dbm_| is reset to INT32_MIN on connection | 613 // strength level is available, the value is set to between 0 and 4, both |
614 // change events. | 614 // inclusive. If the value is unavailable, |signal_strength_| has null value. |
615 int32_t signal_strength_dbm_; | 615 base::Optional<int32_t> signal_strength_; |
616 | 616 |
617 // Minimum and maximum signal strength (in dBm) observed since last connection | 617 // Minimum and maximum signal strength level observed since last connection |
618 // change. Updated on connection change and main frame requests. | 618 // change. Updated on connection change and main frame requests. |
619 int32_t min_signal_strength_since_connection_change_; | 619 base::Optional<int32_t> min_signal_strength_since_connection_change_; |
620 int32_t max_signal_strength_since_connection_change_; | 620 base::Optional<int32_t> max_signal_strength_since_connection_change_; |
621 | 621 |
622 // Stores the qualities of different networks. | 622 // Stores the qualities of different networks. |
623 std::unique_ptr<nqe::internal::NetworkQualityStore> network_quality_store_; | 623 std::unique_ptr<nqe::internal::NetworkQualityStore> network_quality_store_; |
624 | 624 |
625 base::ThreadChecker thread_checker_; | 625 base::ThreadChecker thread_checker_; |
626 | 626 |
627 // Manages the writing of events to the net log. | 627 // Manages the writing of events to the net log. |
628 nqe::internal::EventCreator event_creator_; | 628 nqe::internal::EventCreator event_creator_; |
629 | 629 |
630 // Vector that contains observation sources that should not be used when | 630 // Vector that contains observation sources that should not be used when |
631 // computing the estimate at HTTP layer. | 631 // computing the estimate at HTTP layer. |
632 const std::vector<NetworkQualityObservationSource> | 632 const std::vector<NetworkQualityObservationSource> |
633 disallowed_observation_sources_for_http_; | 633 disallowed_observation_sources_for_http_; |
634 | 634 |
635 // Vector that contains observation sources that should not be used when | 635 // Vector that contains observation sources that should not be used when |
636 // computing the estimate at transport layer. | 636 // computing the estimate at transport layer. |
637 const std::vector<NetworkQualityObservationSource> | 637 const std::vector<NetworkQualityObservationSource> |
638 disallowed_observation_sources_for_transport_; | 638 disallowed_observation_sources_for_transport_; |
639 | 639 |
640 NetLogWithSource net_log_; | 640 NetLogWithSource net_log_; |
641 | 641 |
642 base::WeakPtrFactory<NetworkQualityEstimator> weak_ptr_factory_; | 642 base::WeakPtrFactory<NetworkQualityEstimator> weak_ptr_factory_; |
643 | 643 |
644 DISALLOW_COPY_AND_ASSIGN(NetworkQualityEstimator); | 644 DISALLOW_COPY_AND_ASSIGN(NetworkQualityEstimator); |
645 }; | 645 }; |
646 | 646 |
647 } // namespace net | 647 } // namespace net |
648 | 648 |
649 #endif // NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_ | 649 #endif // NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_ |
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