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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 <stdint.h> | 7 #include <stdint.h> |
| 8 | 8 |
| 9 #include "base/logging.h" | 9 #include "base/logging.h" |
| 10 #include "net/quic/quic_time.h" | 10 #include "net/quic/quic_time.h" |
| 11 #include "net/quic/quic_types.h" | 11 #include "net/quic/quic_types.h" |
| 12 | 12 |
| 13 namespace net { | 13 namespace net { |
| 14 | 14 |
| 15 // Highest number that QuicBandwidth can hold. | 15 // Highest number that QuicBandwidth can hold. |
| 16 const int64 kQuicInfiniteBandwidth = INT64_C(0x7fffffffffffffff); | 16 const int64_t kQuicInfiniteBandwidth = INT64_C(0x7fffffffffffffff); |
| 17 | 17 |
| 18 // static | 18 // static |
| 19 QuicBandwidth QuicBandwidth::Zero() { | 19 QuicBandwidth QuicBandwidth::Zero() { |
| 20 return QuicBandwidth(0); | 20 return QuicBandwidth(0); |
| 21 } | 21 } |
| 22 | 22 |
| 23 // static | 23 // static |
| 24 QuicBandwidth QuicBandwidth::FromBitsPerSecond(int64 bits_per_second) { | 24 QuicBandwidth QuicBandwidth::FromBitsPerSecond(int64_t bits_per_second) { |
| 25 return QuicBandwidth(bits_per_second); | 25 return QuicBandwidth(bits_per_second); |
| 26 } | 26 } |
| 27 | 27 |
| 28 // static | 28 // static |
| 29 QuicBandwidth QuicBandwidth::FromKBitsPerSecond(int64 k_bits_per_second) { | 29 QuicBandwidth QuicBandwidth::FromKBitsPerSecond(int64_t k_bits_per_second) { |
| 30 DCHECK(k_bits_per_second < kQuicInfiniteBandwidth / 1000); | 30 DCHECK(k_bits_per_second < kQuicInfiniteBandwidth / 1000); |
| 31 return QuicBandwidth(k_bits_per_second * 1000); | 31 return QuicBandwidth(k_bits_per_second * 1000); |
| 32 } | 32 } |
| 33 | 33 |
| 34 // static | 34 // static |
| 35 QuicBandwidth QuicBandwidth::FromBytesPerSecond(int64 bytes_per_second) { | 35 QuicBandwidth QuicBandwidth::FromBytesPerSecond(int64_t bytes_per_second) { |
| 36 DCHECK(bytes_per_second < kQuicInfiniteBandwidth / 8); | 36 DCHECK(bytes_per_second < kQuicInfiniteBandwidth / 8); |
| 37 return QuicBandwidth(bytes_per_second * 8); | 37 return QuicBandwidth(bytes_per_second * 8); |
| 38 } | 38 } |
| 39 | 39 |
| 40 // static | 40 // static |
| 41 QuicBandwidth QuicBandwidth::FromKBytesPerSecond(int64 k_bytes_per_second) { | 41 QuicBandwidth QuicBandwidth::FromKBytesPerSecond(int64_t k_bytes_per_second) { |
| 42 DCHECK(k_bytes_per_second < kQuicInfiniteBandwidth / 8000); | 42 DCHECK(k_bytes_per_second < kQuicInfiniteBandwidth / 8000); |
| 43 return QuicBandwidth(k_bytes_per_second * 8000); | 43 return QuicBandwidth(k_bytes_per_second * 8000); |
| 44 } | 44 } |
| 45 | 45 |
| 46 // static | 46 // static |
| 47 QuicBandwidth QuicBandwidth::FromBytesAndTimeDelta(QuicByteCount bytes, | 47 QuicBandwidth QuicBandwidth::FromBytesAndTimeDelta(QuicByteCount bytes, |
| 48 QuicTime::Delta delta) { | 48 QuicTime::Delta delta) { |
| 49 DCHECK_LT(bytes, static_cast<uint64>(kQuicInfiniteBandwidth / | 49 DCHECK_LT(bytes, static_cast<uint64_t>(kQuicInfiniteBandwidth / |
| 50 (8 * kNumMicrosPerSecond))); | 50 (8 * kNumMicrosPerSecond))); |
| 51 int64 bytes_per_second = | 51 int64_t bytes_per_second = |
| 52 (bytes * kNumMicrosPerSecond) / delta.ToMicroseconds(); | 52 (bytes * kNumMicrosPerSecond) / delta.ToMicroseconds(); |
| 53 return QuicBandwidth(bytes_per_second * 8); | 53 return QuicBandwidth(bytes_per_second * 8); |
| 54 } | 54 } |
| 55 | 55 |
| 56 QuicBandwidth::QuicBandwidth(int64 bits_per_second) | 56 QuicBandwidth::QuicBandwidth(int64_t bits_per_second) |
| 57 : bits_per_second_(bits_per_second) { | 57 : bits_per_second_(bits_per_second) { |
| 58 DCHECK_GE(bits_per_second, 0); | 58 DCHECK_GE(bits_per_second, 0); |
| 59 } | 59 } |
| 60 | 60 |
| 61 int64 QuicBandwidth::ToBitsPerSecond() const { | 61 int64_t QuicBandwidth::ToBitsPerSecond() const { |
| 62 return bits_per_second_; | 62 return bits_per_second_; |
| 63 } | 63 } |
| 64 | 64 |
| 65 int64 QuicBandwidth::ToKBitsPerSecond() const { | 65 int64_t QuicBandwidth::ToKBitsPerSecond() const { |
| 66 return bits_per_second_ / 1000; | 66 return bits_per_second_ / 1000; |
| 67 } | 67 } |
| 68 | 68 |
| 69 int64 QuicBandwidth::ToBytesPerSecond() const { | 69 int64_t QuicBandwidth::ToBytesPerSecond() const { |
| 70 return bits_per_second_ / 8; | 70 return bits_per_second_ / 8; |
| 71 } | 71 } |
| 72 | 72 |
| 73 int64 QuicBandwidth::ToKBytesPerSecond() const { | 73 int64_t QuicBandwidth::ToKBytesPerSecond() const { |
| 74 return bits_per_second_ / 8000; | 74 return bits_per_second_ / 8000; |
| 75 } | 75 } |
| 76 | 76 |
| 77 QuicByteCount QuicBandwidth::ToBytesPerPeriod( | 77 QuicByteCount QuicBandwidth::ToBytesPerPeriod( |
| 78 QuicTime::Delta time_period) const { | 78 QuicTime::Delta time_period) const { |
| 79 return ToBytesPerSecond() * time_period.ToMicroseconds() / | 79 return ToBytesPerSecond() * time_period.ToMicroseconds() / |
| 80 kNumMicrosPerSecond; | 80 kNumMicrosPerSecond; |
| 81 } | 81 } |
| 82 | 82 |
| 83 int64 QuicBandwidth::ToKBytesPerPeriod(QuicTime::Delta time_period) const { | 83 int64_t QuicBandwidth::ToKBytesPerPeriod(QuicTime::Delta time_period) const { |
| 84 return ToKBytesPerSecond() * time_period.ToMicroseconds() / | 84 return ToKBytesPerSecond() * time_period.ToMicroseconds() / |
| 85 kNumMicrosPerSecond; | 85 kNumMicrosPerSecond; |
| 86 } | 86 } |
| 87 | 87 |
| 88 bool QuicBandwidth::IsZero() const { | 88 bool QuicBandwidth::IsZero() const { |
| 89 return (bits_per_second_ == 0); | 89 return (bits_per_second_ == 0); |
| 90 } | 90 } |
| 91 | 91 |
| 92 QuicBandwidth QuicBandwidth::Add(const QuicBandwidth& delta) const { | 92 QuicBandwidth QuicBandwidth::Add(const QuicBandwidth& delta) const { |
| 93 return QuicBandwidth(bits_per_second_ + delta.bits_per_second_); | 93 return QuicBandwidth(bits_per_second_ + delta.bits_per_second_); |
| 94 } | 94 } |
| 95 | 95 |
| 96 QuicBandwidth QuicBandwidth::Subtract(const QuicBandwidth& delta) const { | 96 QuicBandwidth QuicBandwidth::Subtract(const QuicBandwidth& delta) const { |
| 97 return QuicBandwidth(bits_per_second_ - delta.bits_per_second_); | 97 return QuicBandwidth(bits_per_second_ - delta.bits_per_second_); |
| 98 } | 98 } |
| 99 | 99 |
| 100 QuicBandwidth QuicBandwidth::Scale(float scale_factor) const { | 100 QuicBandwidth QuicBandwidth::Scale(float scale_factor) const { |
| 101 return QuicBandwidth(static_cast<int64>(bits_per_second_ * scale_factor)); | 101 return QuicBandwidth(static_cast<int64_t>(bits_per_second_ * scale_factor)); |
| 102 } | 102 } |
| 103 | 103 |
| 104 QuicTime::Delta QuicBandwidth::TransferTime(QuicByteCount bytes) const { | 104 QuicTime::Delta QuicBandwidth::TransferTime(QuicByteCount bytes) const { |
| 105 if (bits_per_second_ == 0) { | 105 if (bits_per_second_ == 0) { |
| 106 return QuicTime::Delta::Zero(); | 106 return QuicTime::Delta::Zero(); |
| 107 } | 107 } |
| 108 return QuicTime::Delta::FromMicroseconds(bytes * 8 * kNumMicrosPerSecond / | 108 return QuicTime::Delta::FromMicroseconds(bytes * 8 * kNumMicrosPerSecond / |
| 109 bits_per_second_); | 109 bits_per_second_); |
| 110 } | 110 } |
| 111 | 111 |
| 112 } // namespace net | 112 } // namespace net |
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