quic_time.cc revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7 
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
65QuicTime::Delta QuicTime::Delta::Multiply(int i) const {
66  return QuicTime::Delta::FromMicroseconds(ToMicroseconds() * i);
67}
68
69QuicTime::Delta QuicTime::Delta::Multiply(double d) const {
70  return QuicTime::Delta::FromMicroseconds(ToMicroseconds() * d);
71}
72
73// static
74QuicTime::Delta QuicTime::Delta::Max(QuicTime::Delta delta1,
75                                     QuicTime::Delta delta2) {
76  return delta1 < delta2 ? delta2 : delta1;
77}
78
79bool QuicTime::Delta::IsZero() const {
80  return delta_.InMicroseconds() == 0;
81}
82
83bool QuicTime::Delta::IsInfinite() const {
84  return delta_.InMicroseconds() == kQuicInfiniteTimeUs;
85}
86
87// static
88QuicTime QuicTime::Zero() {
89  return QuicTime(base::TimeTicks());
90}
91
92// static
93QuicTime QuicTime::Max(QuicTime time1, QuicTime time2) {
94  return time1 > time2 ? time1 : time2;
95}
96
97QuicTime::QuicTime(base::TimeTicks ticks)
98    : ticks_(ticks) {
99}
100
101int64 QuicTime::ToDebuggingValue() const {
102  return (ticks_ - base::TimeTicks()).InMicroseconds();
103}
104
105bool QuicTime::IsInitialized() const {
106  return ticks_ != base::TimeTicks();
107}
108
109QuicTime QuicTime::Add(const Delta& delta) const {
110  return QuicTime(ticks_ + delta.delta_);
111}
112
113QuicTime QuicTime::Subtract(const Delta& delta) const {
114  return QuicTime(ticks_ - delta.delta_);
115}
116
117QuicTime::Delta QuicTime::Subtract(const QuicTime& other) const {
118  return QuicTime::Delta(ticks_ - other.ticks_);
119}
120
121// static
122QuicWallTime QuicWallTime::FromUNIXSeconds(uint64 seconds) {
123  return QuicWallTime(seconds);
124}
125
126// static
127QuicWallTime QuicWallTime::Zero() {
128  return QuicWallTime(0);
129}
130
131uint64 QuicWallTime::ToUNIXSeconds() const {
132  return seconds_;
133}
134
135bool QuicWallTime::IsAfter(QuicWallTime other) const {
136  return seconds_ > other.seconds_;
137}
138
139bool QuicWallTime::IsBefore(QuicWallTime other) const {
140  return seconds_ < other.seconds_;
141}
142
143bool QuicWallTime::IsZero() const {
144  return seconds_ == 0;
145}
146
147QuicTime::Delta QuicWallTime::AbsoluteDifference(QuicWallTime other) const {
148  uint64 d;
149
150  if (seconds_ > other.seconds_) {
151    d = seconds_ - other.seconds_;
152  } else {
153    d = other.seconds_ - seconds_;
154  }
155
156  if (d > static_cast<uint64>(kint64max)) {
157    d = kint64max;
158  }
159  return QuicTime::Delta::FromSeconds(d);
160}
161
162QuicWallTime QuicWallTime::Add(QuicTime::Delta delta) const {
163  uint64 seconds = seconds_ + delta.ToSeconds();
164  if (seconds < seconds_) {
165    seconds = kuint64max;
166  }
167  return QuicWallTime(seconds);
168}
169
170QuicWallTime QuicWallTime::Subtract(QuicTime::Delta delta) const {
171  uint64 seconds = seconds_ - delta.ToSeconds();
172  if (seconds > seconds_) {
173    seconds = 0;
174  }
175  return QuicWallTime(seconds);
176}
177
178QuicWallTime::QuicWallTime(uint64 seconds)
179    : seconds_(seconds) {
180}
181
182}  // namespace net
183