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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 // QuicBandwidth represents a bandwidth, stored in bits per second resolution. | 5 // QuicBandwidth represents a bandwidth, stored in bits per second resolution. |
| 6 | 6 |
| 7 #ifndef NET_QUIC_QUIC_BANDWIDTH_H_ | 7 #ifndef NET_QUIC_QUIC_BANDWIDTH_H_ |
| 8 #define NET_QUIC_QUIC_BANDWIDTH_H_ | 8 #define NET_QUIC_QUIC_BANDWIDTH_H_ |
| 9 | 9 |
| 10 #include "base/basictypes.h" | 10 #include <stdint.h> |
| 11 |
| 11 #include "base/compiler_specific.h" | 12 #include "base/compiler_specific.h" |
| 12 #include "net/quic/quic_time.h" | 13 #include "net/quic/quic_time.h" |
| 13 | 14 |
| 14 namespace net { | 15 namespace net { |
| 15 | 16 |
| 16 typedef uint64 QuicByteCount; | 17 typedef uint64_t QuicByteCount; |
| 17 typedef uint64 QuicPacketCount; | 18 typedef uint64_t QuicPacketCount; |
| 18 | 19 |
| 19 class NET_EXPORT_PRIVATE QuicBandwidth { | 20 class NET_EXPORT_PRIVATE QuicBandwidth { |
| 20 public: | 21 public: |
| 21 // Creates a new QuicBandwidth with an internal value of 0. | 22 // Creates a new QuicBandwidth with an internal value of 0. |
| 22 static QuicBandwidth Zero(); | 23 static QuicBandwidth Zero(); |
| 23 | 24 |
| 24 // Create a new QuicBandwidth holding the bits per second. | 25 // Create a new QuicBandwidth holding the bits per second. |
| 25 static QuicBandwidth FromBitsPerSecond(int64 bits_per_second); | 26 static QuicBandwidth FromBitsPerSecond(int64_t bits_per_second); |
| 26 | 27 |
| 27 // Create a new QuicBandwidth holding the kilo bits per second. | 28 // Create a new QuicBandwidth holding the kilo bits per second. |
| 28 static QuicBandwidth FromKBitsPerSecond(int64 k_bits_per_second); | 29 static QuicBandwidth FromKBitsPerSecond(int64_t k_bits_per_second); |
| 29 | 30 |
| 30 // Create a new QuicBandwidth holding the bytes per second. | 31 // Create a new QuicBandwidth holding the bytes per second. |
| 31 static QuicBandwidth FromBytesPerSecond(int64 bytes_per_second); | 32 static QuicBandwidth FromBytesPerSecond(int64_t bytes_per_second); |
| 32 | 33 |
| 33 // Create a new QuicBandwidth holding the kilo bytes per second. | 34 // Create a new QuicBandwidth holding the kilo bytes per second. |
| 34 static QuicBandwidth FromKBytesPerSecond(int64 k_bytes_per_second); | 35 static QuicBandwidth FromKBytesPerSecond(int64_t k_bytes_per_second); |
| 35 | 36 |
| 36 // Create a new QuicBandwidth based on the bytes per the elapsed delta. | 37 // Create a new QuicBandwidth based on the bytes per the elapsed delta. |
| 37 static QuicBandwidth FromBytesAndTimeDelta(QuicByteCount bytes, | 38 static QuicBandwidth FromBytesAndTimeDelta(QuicByteCount bytes, |
| 38 QuicTime::Delta delta); | 39 QuicTime::Delta delta); |
| 39 | 40 |
| 40 int64 ToBitsPerSecond() const; | 41 int64_t ToBitsPerSecond() const; |
| 41 | 42 |
| 42 int64 ToKBitsPerSecond() const; | 43 int64_t ToKBitsPerSecond() const; |
| 43 | 44 |
| 44 int64 ToBytesPerSecond() const; | 45 int64_t ToBytesPerSecond() const; |
| 45 | 46 |
| 46 int64 ToKBytesPerSecond() const; | 47 int64_t ToKBytesPerSecond() const; |
| 47 | 48 |
| 48 QuicByteCount ToBytesPerPeriod(QuicTime::Delta time_period) const; | 49 QuicByteCount ToBytesPerPeriod(QuicTime::Delta time_period) const; |
| 49 | 50 |
| 50 int64 ToKBytesPerPeriod(QuicTime::Delta time_period) const; | 51 int64_t ToKBytesPerPeriod(QuicTime::Delta time_period) const; |
| 51 | 52 |
| 52 bool IsZero() const; | 53 bool IsZero() const; |
| 53 | 54 |
| 54 QuicBandwidth Add(const QuicBandwidth& delta) const WARN_UNUSED_RESULT; | 55 QuicBandwidth Add(const QuicBandwidth& delta) const WARN_UNUSED_RESULT; |
| 55 | 56 |
| 56 QuicBandwidth Subtract(const QuicBandwidth& delta) const WARN_UNUSED_RESULT; | 57 QuicBandwidth Subtract(const QuicBandwidth& delta) const WARN_UNUSED_RESULT; |
| 57 | 58 |
| 58 QuicBandwidth Scale(float scale_factor) const WARN_UNUSED_RESULT; | 59 QuicBandwidth Scale(float scale_factor) const WARN_UNUSED_RESULT; |
| 59 | 60 |
| 60 QuicTime::Delta TransferTime(QuicByteCount bytes) const; | 61 QuicTime::Delta TransferTime(QuicByteCount bytes) const; |
| 61 | 62 |
| 62 private: | 63 private: |
| 63 explicit QuicBandwidth(int64 bits_per_second); | 64 explicit QuicBandwidth(int64_t bits_per_second); |
| 64 int64 bits_per_second_; | 65 int64_t bits_per_second_; |
| 65 }; | 66 }; |
| 66 | 67 |
| 67 // Non-member relational operators for QuicBandwidth. | 68 // Non-member relational operators for QuicBandwidth. |
| 68 inline bool operator==(QuicBandwidth lhs, QuicBandwidth rhs) { | 69 inline bool operator==(QuicBandwidth lhs, QuicBandwidth rhs) { |
| 69 return lhs.ToBitsPerSecond() == rhs.ToBitsPerSecond(); | 70 return lhs.ToBitsPerSecond() == rhs.ToBitsPerSecond(); |
| 70 } | 71 } |
| 71 inline bool operator!=(QuicBandwidth lhs, QuicBandwidth rhs) { | 72 inline bool operator!=(QuicBandwidth lhs, QuicBandwidth rhs) { |
| 72 return !(lhs == rhs); | 73 return !(lhs == rhs); |
| 73 } | 74 } |
| 74 inline bool operator<(QuicBandwidth lhs, QuicBandwidth rhs) { | 75 inline bool operator<(QuicBandwidth lhs, QuicBandwidth rhs) { |
| 75 return lhs.ToBitsPerSecond() < rhs.ToBitsPerSecond(); | 76 return lhs.ToBitsPerSecond() < rhs.ToBitsPerSecond(); |
| 76 } | 77 } |
| 77 inline bool operator>(QuicBandwidth lhs, QuicBandwidth rhs) { | 78 inline bool operator>(QuicBandwidth lhs, QuicBandwidth rhs) { |
| 78 return rhs < lhs; | 79 return rhs < lhs; |
| 79 } | 80 } |
| 80 inline bool operator<=(QuicBandwidth lhs, QuicBandwidth rhs) { | 81 inline bool operator<=(QuicBandwidth lhs, QuicBandwidth rhs) { |
| 81 return !(rhs < lhs); | 82 return !(rhs < lhs); |
| 82 } | 83 } |
| 83 inline bool operator>=(QuicBandwidth lhs, QuicBandwidth rhs) { | 84 inline bool operator>=(QuicBandwidth lhs, QuicBandwidth rhs) { |
| 84 return !(lhs < rhs); | 85 return !(lhs < rhs); |
| 85 } | 86 } |
| 86 | 87 |
| 87 } // namespace net | 88 } // namespace net |
| 88 #endif // NET_QUIC_QUIC_BANDWIDTH_H_ | 89 #endif // NET_QUIC_QUIC_BANDWIDTH_H_ |
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