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Side by Side Diff: net/quic/quic_bandwidth.h

Issue 2193073003: Move shared files in net/quic/ into net/quic/core/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: io_thread_unittest.cc Created 4 years, 4 months ago
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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 // QuicBandwidth represents a bandwidth, stored in bits per second resolution.
6
7 #ifndef NET_QUIC_QUIC_BANDWIDTH_H_
8 #define NET_QUIC_QUIC_BANDWIDTH_H_
9
10 #include <stdint.h>
11
12 #include "base/compiler_specific.h"
13 #include "net/quic/quic_time.h"
14
15 namespace net {
16
17 typedef uint64_t QuicByteCount;
18 typedef uint64_t QuicPacketCount;
19
20 class NET_EXPORT_PRIVATE QuicBandwidth {
21 public:
22 // Creates a new QuicBandwidth with an internal value of 0.
23 static QuicBandwidth Zero();
24
25 // Create a new QuicBandwidth holding the bits per second.
26 static QuicBandwidth FromBitsPerSecond(int64_t bits_per_second);
27
28 // Create a new QuicBandwidth holding the kilo bits per second.
29 static QuicBandwidth FromKBitsPerSecond(int64_t k_bits_per_second);
30
31 // Create a new QuicBandwidth holding the bytes per second.
32 static QuicBandwidth FromBytesPerSecond(int64_t bytes_per_second);
33
34 // Create a new QuicBandwidth holding the kilo bytes per second.
35 static QuicBandwidth FromKBytesPerSecond(int64_t k_bytes_per_second);
36
37 // Create a new QuicBandwidth based on the bytes per the elapsed delta.
38 static QuicBandwidth FromBytesAndTimeDelta(QuicByteCount bytes,
39 QuicTime::Delta delta);
40
41 int64_t ToBitsPerSecond() const;
42
43 int64_t ToKBitsPerSecond() const;
44
45 int64_t ToBytesPerSecond() const;
46
47 int64_t ToKBytesPerSecond() const;
48
49 QuicByteCount ToBytesPerPeriod(QuicTime::Delta time_period) const;
50
51 int64_t ToKBytesPerPeriod(QuicTime::Delta time_period) const;
52
53 bool IsZero() const;
54
55 QuicTime::Delta TransferTime(QuicByteCount bytes) const;
56
57 private:
58 explicit QuicBandwidth(int64_t bits_per_second);
59 int64_t bits_per_second_;
60
61 friend QuicBandwidth operator+(QuicBandwidth lhs, QuicBandwidth rhs);
62 friend QuicBandwidth operator-(QuicBandwidth lhs, QuicBandwidth rhs);
63 friend QuicBandwidth operator*(QuicBandwidth lhs, float factor);
64 };
65
66 // Non-member relational operators for QuicBandwidth.
67 inline bool operator==(QuicBandwidth lhs, QuicBandwidth rhs) {
68 return lhs.ToBitsPerSecond() == rhs.ToBitsPerSecond();
69 }
70 inline bool operator!=(QuicBandwidth lhs, QuicBandwidth rhs) {
71 return !(lhs == rhs);
72 }
73 inline bool operator<(QuicBandwidth lhs, QuicBandwidth rhs) {
74 return lhs.ToBitsPerSecond() < rhs.ToBitsPerSecond();
75 }
76 inline bool operator>(QuicBandwidth lhs, QuicBandwidth rhs) {
77 return rhs < lhs;
78 }
79 inline bool operator<=(QuicBandwidth lhs, QuicBandwidth rhs) {
80 return !(rhs < lhs);
81 }
82 inline bool operator>=(QuicBandwidth lhs, QuicBandwidth rhs) {
83 return !(lhs < rhs);
84 }
85
86 // Non-member arithmetic operators for QuicBandwidth.
87 inline QuicBandwidth operator+(QuicBandwidth lhs, QuicBandwidth rhs) {
88 return QuicBandwidth(lhs.bits_per_second_ + rhs.bits_per_second_);
89 }
90 inline QuicBandwidth operator-(QuicBandwidth lhs, QuicBandwidth rhs) {
91 return QuicBandwidth(lhs.bits_per_second_ - rhs.bits_per_second_);
92 }
93 inline QuicBandwidth operator*(QuicBandwidth lhs, float rhs) {
94 return QuicBandwidth(static_cast<int64_t>(lhs.bits_per_second_ * rhs));
95 }
96 inline QuicBandwidth operator*(float lhs, QuicBandwidth rhs) {
97 return rhs * lhs;
98 }
99
100 } // namespace net
101 #endif // NET_QUIC_QUIC_BANDWIDTH_H_
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