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