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- // Copyright 2016 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "net/nqe/network_quality.h"
- namespace net::nqe::internal {
- base::TimeDelta InvalidRTT() {
- return base::Milliseconds(INVALID_RTT_THROUGHPUT);
- }
- NetworkQuality::NetworkQuality()
- : NetworkQuality(InvalidRTT(), InvalidRTT(), INVALID_RTT_THROUGHPUT) {
- VerifyValueCorrectness();
- DETACH_FROM_SEQUENCE(sequence_checker_);
- }
- NetworkQuality::NetworkQuality(const base::TimeDelta& http_rtt,
- const base::TimeDelta& transport_rtt,
- int32_t downstream_throughput_kbps)
- : http_rtt_(http_rtt),
- transport_rtt_(transport_rtt),
- downstream_throughput_kbps_(downstream_throughput_kbps) {
- VerifyValueCorrectness();
- DETACH_FROM_SEQUENCE(sequence_checker_);
- }
- NetworkQuality::NetworkQuality(const NetworkQuality& other)
- : NetworkQuality(other.http_rtt_,
- other.transport_rtt_,
- other.downstream_throughput_kbps_) {
- VerifyValueCorrectness();
- DETACH_FROM_SEQUENCE(sequence_checker_);
- }
- NetworkQuality::~NetworkQuality() = default;
- NetworkQuality& NetworkQuality::operator=(const NetworkQuality& other) {
- http_rtt_ = other.http_rtt_;
- transport_rtt_ = other.transport_rtt_;
- downstream_throughput_kbps_ = other.downstream_throughput_kbps_;
- VerifyValueCorrectness();
- DETACH_FROM_SEQUENCE(sequence_checker_);
- return *this;
- }
- bool NetworkQuality::operator==(const NetworkQuality& other) const {
- DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
- return http_rtt_ == other.http_rtt_ &&
- transport_rtt_ == other.transport_rtt_ &&
- downstream_throughput_kbps_ == other.downstream_throughput_kbps_;
- }
- bool NetworkQuality::IsFaster(const NetworkQuality& other) const {
- DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
- return (http_rtt() == InvalidRTT() || other.http_rtt() == InvalidRTT() ||
- http_rtt() <= other.http_rtt()) &&
- (transport_rtt() == InvalidRTT() ||
- other.transport_rtt() == InvalidRTT() ||
- transport_rtt() <= other.transport_rtt()) &&
- (downstream_throughput_kbps() == INVALID_RTT_THROUGHPUT ||
- other.downstream_throughput_kbps() == INVALID_RTT_THROUGHPUT ||
- downstream_throughput_kbps() >= other.downstream_throughput_kbps());
- }
- void NetworkQuality::VerifyValueCorrectness() const {
- DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
- DCHECK_LE(INVALID_RTT_THROUGHPUT, http_rtt_.InMilliseconds());
- DCHECK_LE(INVALID_RTT_THROUGHPUT, transport_rtt_.InMilliseconds());
- DCHECK_LE(INVALID_RTT_THROUGHPUT, downstream_throughput_kbps_);
- }
- } // namespace net::nqe::internal
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