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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 #include "net/quic/quic_bandwidth.h" | 5 #include "net/quic/quic_bandwidth.h" |
| 6 | 6 |
| 7 #include "base/logging.h" | 7 #include "base/logging.h" |
| 8 #include "base/time/time.h" | 8 #include "base/time/time.h" |
| 9 | 9 |
| 10 namespace net { | 10 namespace net { |
| (...skipping 28 matching lines...) Expand all Loading... |
| 39 DCHECK(k_bytes_per_second < kQuicInfiniteBandwidth / 8000); | 39 DCHECK(k_bytes_per_second < kQuicInfiniteBandwidth / 8000); |
| 40 return QuicBandwidth(k_bytes_per_second * 8000); | 40 return QuicBandwidth(k_bytes_per_second * 8000); |
| 41 } | 41 } |
| 42 | 42 |
| 43 // static | 43 // static |
| 44 QuicBandwidth QuicBandwidth::FromBytesAndTimeDelta(QuicByteCount bytes, | 44 QuicBandwidth QuicBandwidth::FromBytesAndTimeDelta(QuicByteCount bytes, |
| 45 QuicTime::Delta delta) { | 45 QuicTime::Delta delta) { |
| 46 DCHECK_LT(bytes, | 46 DCHECK_LT(bytes, |
| 47 static_cast<uint64>(kQuicInfiniteBandwidth / | 47 static_cast<uint64>(kQuicInfiniteBandwidth / |
| 48 (8 * base::Time::kMicrosecondsPerSecond))); | 48 (8 * base::Time::kMicrosecondsPerSecond))); |
| 49 int64 bytes_per_second = (bytes * base::Time::kMicrosecondsPerSecond) / | 49 int64 bytes_per_second = |
| 50 delta.ToMicroseconds(); | 50 (bytes * base::Time::kMicrosecondsPerSecond) / delta.ToMicroseconds(); |
| 51 return QuicBandwidth(bytes_per_second * 8); | 51 return QuicBandwidth(bytes_per_second * 8); |
| 52 } | 52 } |
| 53 | 53 |
| 54 QuicBandwidth::QuicBandwidth(int64 bits_per_second) | 54 QuicBandwidth::QuicBandwidth(int64 bits_per_second) |
| 55 : bits_per_second_(bits_per_second) { | 55 : bits_per_second_(bits_per_second) { |
| 56 DCHECK_GE(bits_per_second, 0); | 56 DCHECK_GE(bits_per_second, 0); |
| 57 } | 57 } |
| 58 | 58 |
| 59 int64 QuicBandwidth::ToBitsPerSecond() const { | 59 int64 QuicBandwidth::ToBitsPerSecond() const { |
| 60 return bits_per_second_; | 60 return bits_per_second_; |
| 61 } | 61 } |
| 62 | 62 |
| 63 int64 QuicBandwidth::ToKBitsPerSecond() const { | 63 int64 QuicBandwidth::ToKBitsPerSecond() const { |
| 64 return bits_per_second_ / 1000; | 64 return bits_per_second_ / 1000; |
| 65 } | 65 } |
| 66 | 66 |
| 67 int64 QuicBandwidth::ToBytesPerSecond() const { | 67 int64 QuicBandwidth::ToBytesPerSecond() const { |
| 68 return bits_per_second_ / 8; | 68 return bits_per_second_ / 8; |
| 69 } | 69 } |
| 70 | 70 |
| 71 int64 QuicBandwidth::ToKBytesPerSecond() const { | 71 int64 QuicBandwidth::ToKBytesPerSecond() const { |
| 72 return bits_per_second_ / 8000; | 72 return bits_per_second_ / 8000; |
| 73 } | 73 } |
| 74 | 74 |
| 75 QuicByteCount QuicBandwidth::ToBytesPerPeriod( | 75 QuicByteCount QuicBandwidth::ToBytesPerPeriod( |
| 76 QuicTime::Delta time_period) const { | 76 QuicTime::Delta time_period) const { |
| 77 return ToBytesPerSecond() * time_period.ToMicroseconds() / | 77 return ToBytesPerSecond() * time_period.ToMicroseconds() / |
| 78 base::Time::kMicrosecondsPerSecond; | 78 base::Time::kMicrosecondsPerSecond; |
| 79 } | 79 } |
| 80 | 80 |
| 81 int64 QuicBandwidth::ToKBytesPerPeriod(QuicTime::Delta time_period) const { | 81 int64 QuicBandwidth::ToKBytesPerPeriod(QuicTime::Delta time_period) const { |
| 82 return ToKBytesPerSecond() * time_period.ToMicroseconds() / | 82 return ToKBytesPerSecond() * time_period.ToMicroseconds() / |
| 83 base::Time::kMicrosecondsPerSecond; | 83 base::Time::kMicrosecondsPerSecond; |
| 84 } | 84 } |
| 85 | 85 |
| 86 bool QuicBandwidth::IsZero() const { | 86 bool QuicBandwidth::IsZero() const { |
| 87 return (bits_per_second_ == 0); | 87 return (bits_per_second_ == 0); |
| 88 } | 88 } |
| 89 | 89 |
| 90 QuicBandwidth QuicBandwidth::Add(const QuicBandwidth& delta) const { | 90 QuicBandwidth QuicBandwidth::Add(const QuicBandwidth& delta) const { |
| 91 return QuicBandwidth(bits_per_second_ + delta.bits_per_second_); | 91 return QuicBandwidth(bits_per_second_ + delta.bits_per_second_); |
| 92 } | 92 } |
| 93 | 93 |
| 94 QuicBandwidth QuicBandwidth::Subtract(const QuicBandwidth& delta) const { | 94 QuicBandwidth QuicBandwidth::Subtract(const QuicBandwidth& delta) const { |
| 95 return QuicBandwidth(bits_per_second_ - delta.bits_per_second_); | 95 return QuicBandwidth(bits_per_second_ - delta.bits_per_second_); |
| 96 } | 96 } |
| 97 | 97 |
| 98 QuicBandwidth QuicBandwidth::Scale(float scale_factor) const { | 98 QuicBandwidth QuicBandwidth::Scale(float scale_factor) const { |
| 99 return QuicBandwidth(bits_per_second_ * scale_factor); | 99 return QuicBandwidth(bits_per_second_ * scale_factor); |
| 100 } | 100 } |
| 101 | 101 |
| 102 QuicTime::Delta QuicBandwidth::TransferTime(QuicByteCount bytes) const { | 102 QuicTime::Delta QuicBandwidth::TransferTime(QuicByteCount bytes) const { |
| 103 return QuicTime::Delta::FromMicroseconds( | 103 return QuicTime::Delta::FromMicroseconds( |
| 104 bytes * 8 * base::Time::kMicrosecondsPerSecond / bits_per_second_); | 104 bytes * 8 * base::Time::kMicrosecondsPerSecond / bits_per_second_); |
| 105 } | 105 } |
| 106 | 106 |
| 107 } // namespace net | 107 } // namespace net |
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