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UUID.h
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1 /*
2 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of NVIDIA CORPORATION nor the names of its
13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
20 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
24 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #ifndef _ARGUS_UUID_H
30 #define _ARGUS_UUID_H
31
32 #include <stdint.h>
33 #include <cstring>
34
35 /**
36 * @file UUID.h
37 * Defines the UUID types used by Argus.
38 */
39
40 namespace Argus
41 {
42
43 const uint32_t MAX_UUID_NAME_SIZE = 32;
44
45 /**
46 * UUID
47 */
48 struct UUID
49 {
50 uint32_t time_low;
51 uint16_t time_mid;
52 uint16_t time_hi_and_version;
53 uint16_t clock_seq;
54 uint8_t node[6];
55 };
56
57 bool operator==(const UUID& l, const UUID& r);
58 bool operator<(const UUID& l, const UUID& r);
59
60 /**
61 * A unique identifier with a name (primarily for debugging purposes).
62 */
63 class NamedUUID : public UUID
64 {
65 public:
66 NamedUUID(uint32_t time_low_
67 , uint16_t time_mid_
68 , uint16_t time_hi_and_version_
69 , uint16_t clock_seq_
70 , uint8_t c0, uint8_t c1, uint8_t c2, uint8_t c3, uint8_t c4, uint8_t c5
71 , const char* name)
72 {
73 time_low = time_low_;
74 time_mid = time_mid_;
75 time_hi_and_version = time_hi_and_version_;
76 clock_seq = clock_seq_;
77 node[0] = c0; node[1] = c1; node[2] = c2; node[3] = c3; node[4] = c4; node[5] = c5;
78 strncpy(m_name, name, sizeof(m_name));
79 }
80
81 NamedUUID(const NamedUUID& copied)
82 : UUID(copied)
83 {
84 strncpy(m_name, copied.m_name, sizeof(m_name));
85 }
86
87 NamedUUID& operator=(const NamedUUID& copied)
88 {
89 static_cast< UUID&>(*this) = copied;
90
91 return *this;
92 }
93
94 bool operator==(const NamedUUID& compared) const
95 {
96 return static_cast<const UUID&>(*this) == compared;
97 }
98
99 bool operator!=(const NamedUUID& compared) const
100 {
101 return !(static_cast<const UUID&>(*this) == compared);
102 }
103
104 const char* getName() const { return m_name; }
105
106 private:
107 char m_name[MAX_UUID_NAME_SIZE];
108
109 NamedUUID();
110 };
111
112 /// Helper macro used to define NamedUUID-derived values.
113 #define DEFINE_UUID(TYPE, NAME, l, s0, s1, s2, c0,c1,c2,c3,c4,c5) \
114 static const TYPE NAME(0x##l, 0x##s0, 0x##s1, 0x##s2, \
115 0x##c0, 0x##c1, 0x##c2, 0x##c3, 0x##c4, 0x##c0, #NAME);
116
117 #define DEFINE_NAMED_UUID_CLASS(NAME) \
118 class NAME : public NamedUUID \
119 { \
120 public: \
121 NAME(uint32_t time_low_ \
122 , uint16_t time_mid_ \
123 , uint16_t time_hi_and_version_ \
124 , uint16_t clock_seq_ \
125 , uint8_t c0, uint8_t c1, uint8_t c2, uint8_t c3, uint8_t c4, uint8_t c5 \
126 , const char* name) \
127 : NamedUUID(time_low_, time_mid_, time_hi_and_version_, clock_seq_, \
128 c0, c1, c2, c3, c4, c5, name) \
129 {} \
130 private: \
131 NAME();\
132 };
133
134 } // namespace Argus
135
136 #endif // _ARGUS_UUID_H