quic_time.cc revision 868fa2fe829687343ffae624259930155e16dbd8 
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
107// static
108QuicWallTime QuicWallTime::Zero() {
109  return QuicWallTime(0);
110}
111
112uint64 QuicWallTime::ToUNIXSeconds() const {
113  return seconds_;
114}
115
116bool QuicWallTime::IsAfter(QuicWallTime other) const {
117  return seconds_ > other.seconds_;
118}
119
120bool QuicWallTime::IsBefore(QuicWallTime other) const {
121  return seconds_ < other.seconds_;
122}
123
124bool QuicWallTime::IsZero() const {
125  return seconds_ == 0;
126}
127
128QuicTime::Delta QuicWallTime::AbsoluteDifference(QuicWallTime other) const {
129  uint64 d;
130
131  if (seconds_ > other.seconds_) {
132    d = seconds_ - other.seconds_;
133  } else {
134    d = other.seconds_ - seconds_;
135  }
136
137  if (d > static_cast<uint64>(kint64max)) {
138    d = kint64max;
139  }
140  return QuicTime::Delta::FromSeconds(d);
141}
142
143QuicWallTime QuicWallTime::Add(QuicTime::Delta delta) const {
144  uint64 seconds = seconds_ + delta.ToSeconds();
145  if (seconds < seconds_) {
146    seconds = kuint64max;
147  }
148  return QuicWallTime(seconds);
149}
150
151QuicWallTime QuicWallTime::Subtract(QuicTime::Delta delta) const {
152  uint64 seconds = seconds_ - delta.ToSeconds();
153  if (seconds > seconds_) {
154    seconds = 0;
155  }
156  return QuicWallTime(seconds);
157}
158
159QuicWallTime::QuicWallTime(uint64 seconds)
160    : seconds_(seconds) {
161}
162
163}  // namespace net
164