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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "net/quic/quic_time.h" | |
| 6 | |
| 7 #include <limits> | |
| 8 | |
| 9 #include "base/logging.h" | |
| 10 | |
| 11 namespace net { | |
| 12 | |
| 13 uint64_t QuicWallTime::ToUNIXSeconds() const { | |
| 14 return microseconds_ / 1000000; | |
| 15 } | |
| 16 | |
| 17 uint64_t QuicWallTime::ToUNIXMicroseconds() const { | |
| 18 return microseconds_; | |
| 19 } | |
| 20 | |
| 21 bool QuicWallTime::IsAfter(QuicWallTime other) const { | |
| 22 return microseconds_ > other.microseconds_; | |
| 23 } | |
| 24 | |
| 25 bool QuicWallTime::IsBefore(QuicWallTime other) const { | |
| 26 return microseconds_ < other.microseconds_; | |
| 27 } | |
| 28 | |
| 29 bool QuicWallTime::IsZero() const { | |
| 30 return microseconds_ == 0; | |
| 31 } | |
| 32 | |
| 33 QuicTime::Delta QuicWallTime::AbsoluteDifference(QuicWallTime other) const { | |
| 34 uint64_t d; | |
| 35 | |
| 36 if (microseconds_ > other.microseconds_) { | |
| 37 d = microseconds_ - other.microseconds_; | |
| 38 } else { | |
| 39 d = other.microseconds_ - microseconds_; | |
| 40 } | |
| 41 | |
| 42 if (d > static_cast<uint64_t>(std::numeric_limits<int64_t>::max())) { | |
| 43 d = std::numeric_limits<int64_t>::max(); | |
| 44 } | |
| 45 return QuicTime::Delta::FromMicroseconds(d); | |
| 46 } | |
| 47 | |
| 48 QuicWallTime QuicWallTime::Add(QuicTime::Delta delta) const { | |
| 49 uint64_t microseconds = microseconds_ + delta.ToMicroseconds(); | |
| 50 if (microseconds < microseconds_) { | |
| 51 microseconds = std::numeric_limits<uint64_t>::max(); | |
| 52 } | |
| 53 return QuicWallTime(microseconds); | |
| 54 } | |
| 55 | |
| 56 // TODO(ianswett) Test this. | |
| 57 QuicWallTime QuicWallTime::Subtract(QuicTime::Delta delta) const { | |
| 58 uint64_t microseconds = microseconds_ - delta.ToMicroseconds(); | |
| 59 if (microseconds > microseconds_) { | |
| 60 microseconds = 0; | |
| 61 } | |
| 62 return QuicWallTime(microseconds); | |
| 63 } | |
| 64 | |
| 65 } // namespace net | |
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