quic_time.cc revision b2df76ea8fec9e32f6f3718986dba0d95315b29c 
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 "base/logging.h"
8
9namespace net {
10
11// Highest number of microseconds that DateTimeOffset can hold.
12const int64 kQuicInfiniteTimeUs = GG_INT64_C(0x7fffffffffffffff) / 10;
13
14QuicTime::Delta::Delta(base::TimeDelta delta)
15    : delta_(delta) {
16}
17
18// static
19QuicTime::Delta QuicTime::Delta::Zero() {
20  return QuicTime::Delta::FromMicroseconds(0);
21}
22
23// static
24QuicTime::Delta QuicTime::Delta::Infinite() {
25  return QuicTime::Delta::FromMicroseconds(kQuicInfiniteTimeUs);
26}
27
28// static
29QuicTime::Delta QuicTime::Delta::FromSeconds(int64 seconds) {
30  return QuicTime::Delta(base::TimeDelta::FromSeconds(seconds));
31}
32
33// static
34QuicTime::Delta QuicTime::Delta::FromMilliseconds(int64 ms) {
35  return QuicTime::Delta(base::TimeDelta::FromMilliseconds(ms));
36}
37
38// static
39QuicTime::Delta QuicTime::Delta::FromMicroseconds(int64 us) {
40  return QuicTime::Delta(base::TimeDelta::FromMicroseconds(us));
41}
42
43int64 QuicTime::Delta::ToSeconds() const {
44  return delta_.InSeconds();
45}
46
47int64 QuicTime::Delta::ToMilliseconds() const {
48  return delta_.InMilliseconds();
49}
50
51int64 QuicTime::Delta::ToMicroseconds() const {
52  return delta_.InMicroseconds();
53}
54
55QuicTime::Delta QuicTime::Delta::Add(const Delta& delta) const {
56  return QuicTime::Delta::FromMicroseconds(ToMicroseconds() +
57                                           delta.ToMicroseconds());
58}
59
60QuicTime::Delta QuicTime::Delta::Subtract(const Delta& delta) const {
61  return QuicTime::Delta::FromMicroseconds(ToMicroseconds() -
62                                           delta.ToMicroseconds());
63}
64
65bool QuicTime::Delta::IsZero() const {
66  return delta_.InMicroseconds() == 0;
67}
68
69bool QuicTime::Delta::IsInfinite() const {
70  return delta_.InMicroseconds() == kQuicInfiniteTimeUs;
71}
72
73// static
74QuicTime QuicTime::Zero() {
75  return QuicTime(base::TimeTicks());
76}
77
78QuicTime::QuicTime(base::TimeTicks ticks)
79    : ticks_(ticks) {
80}
81
82int64 QuicTime::ToDebuggingValue() const {
83  return (ticks_ - base::TimeTicks()).InMicroseconds();
84}
85
86bool QuicTime::IsInitialized() const {
87  return ticks_ != base::TimeTicks();
88}
89
90QuicTime QuicTime::Add(const Delta& delta) const {
91  return QuicTime(ticks_ + delta.delta_);
92}
93
94QuicTime QuicTime::Subtract(const Delta& delta) const {
95  return QuicTime(ticks_ - delta.delta_);
96}
97
98QuicTime::Delta QuicTime::Subtract(const QuicTime& other) const {
99  return QuicTime::Delta(ticks_ - other.ticks_);
100}
101
102// static
103QuicWallTime QuicWallTime::FromUNIXSeconds(uint64 seconds) {
104  return QuicWallTime(seconds);
105}
106
107uint64 QuicWallTime::ToUNIXSeconds() const {
108  return seconds_;
109}
110
111bool QuicWallTime::IsAfter(QuicWallTime other) const {
112  return seconds_ > other.seconds_;
113}
114
115bool QuicWallTime::IsBefore(QuicWallTime other) const {
116  return seconds_ < other.seconds_;
117}
118
119QuicTime::Delta QuicWallTime::AbsoluteDifference(QuicWallTime other) const {
120  uint64 d;
121
122  if (seconds_ > other.seconds_) {
123    d = seconds_ - other.seconds_;
124  } else {
125    d = other.seconds_ - seconds_;
126  }
127
128  if (d > static_cast<uint64>(kint64max)) {
129    d = kint64max;
130  }
131  return QuicTime::Delta::FromSeconds(d);
132}
133
134QuicWallTime QuicWallTime::Add(QuicTime::Delta delta) const {
135  uint64 seconds = seconds_ + delta.ToSeconds();
136  if (seconds < seconds_) {
137    seconds = kuint64max;
138  }
139  return QuicWallTime(seconds);
140}
141
142QuicWallTime QuicWallTime::Subtract(QuicTime::Delta delta) const {
143  uint64 seconds = seconds_ - delta.ToSeconds();
144  if (seconds > seconds_) {
145    seconds = 0;
146  }
147  return QuicWallTime(seconds);
148}
149
150QuicWallTime::QuicWallTime(uint64 seconds)
151    : seconds_(seconds) {
152}
153
154}  // namespace net
155