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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 // QuicTime represents one point in time, stored in microsecond resolution. | 5 // QuicTime represents one point in time, stored in microsecond resolution. |
| 6 // QuicTime is monotonically increasing, even across system clock adjustments. | 6 // QuicTime is monotonically increasing, even across system clock adjustments. |
| 7 // The epoch (time 0) of QuicTime is unspecified. | 7 // The epoch (time 0) of QuicTime is unspecified. |
| 8 // | 8 // |
| 9 // This implementation wraps the classes base::TimeTicks and base::TimeDelta. | 9 // This implementation wraps the classes base::TimeTicks and base::TimeDelta. |
| 10 | 10 |
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| 74 friend class QuicTime; | 74 friend class QuicTime; |
| 75 friend class QuicClock; | 75 friend class QuicClock; |
| 76 }; | 76 }; |
| 77 | 77 |
| 78 explicit QuicTime(base::TimeTicks ticks); | 78 explicit QuicTime(base::TimeTicks ticks); |
| 79 | 79 |
| 80 // Creates a new QuicTime with an internal value of 0. IsInitialized() | 80 // Creates a new QuicTime with an internal value of 0. IsInitialized() |
| 81 // will return false for these times. | 81 // will return false for these times. |
| 82 static QuicTime Zero(); | 82 static QuicTime Zero(); |
| 83 | 83 |
| 84 // Creates a new QuicTime with an infinite time. |
| 85 static QuicTime Infinite(); |
| 86 |
| 84 // Returns the later time of time1 and time2. | 87 // Returns the later time of time1 and time2. |
| 85 static QuicTime Max(QuicTime time1, QuicTime time2); | 88 static QuicTime Max(QuicTime time1, QuicTime time2); |
| 86 | 89 |
| 87 // Produce the internal value to be used when logging. This value | 90 // Produce the internal value to be used when logging. This value |
| 88 // represents the number of microseconds since some epoch. It may | 91 // represents the number of microseconds since some epoch. It may |
| 89 // be the UNIX epoch on some platforms. On others, it may | 92 // be the UNIX epoch on some platforms. On others, it may |
| 90 // be a CPU ticks based value. | 93 // be a CPU ticks based value. |
| 91 int64 ToDebuggingValue() const; | 94 int64 ToDebuggingValue() const; |
| 92 | 95 |
| 93 bool IsInitialized() const; | 96 bool IsInitialized() const; |
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| 184 inline bool operator<=(QuicTime lhs, QuicTime rhs) { | 187 inline bool operator<=(QuicTime lhs, QuicTime rhs) { |
| 185 return !(rhs < lhs); | 188 return !(rhs < lhs); |
| 186 } | 189 } |
| 187 inline bool operator>=(QuicTime lhs, QuicTime rhs) { | 190 inline bool operator>=(QuicTime lhs, QuicTime rhs) { |
| 188 return !(lhs < rhs); | 191 return !(lhs < rhs); |
| 189 } | 192 } |
| 190 | 193 |
| 191 } // namespace net | 194 } // namespace net |
| 192 | 195 |
| 193 #endif // NET_QUIC_QUIC_TIME_H_ | 196 #endif // NET_QUIC_QUIC_TIME_H_ |
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