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1 | /* |
2 | * Copyright (C) 2022 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: LGPL-2.1-only | |
5 | * | |
6 | */ | |
7 | ||
8 | #ifndef LTTNG_TRACE_FORMAT_DESCRIPTOR_INTERNAL_HPP | |
9 | #define LTTNG_TRACE_FORMAT_DESCRIPTOR_INTERNAL_HPP | |
10 | ||
11 | #include <bits/stdint-uintn.h> | |
12 | #include <common/config/session-config.hpp> | |
13 | #include <common/dynamic-array.hpp> | |
14 | #include <common/macros.hpp> | |
15 | #include <common/optional.hpp> | |
f4c5b127 | 16 | #include <common/sessiond-comm/relayd.hpp> |
55b1df44 JR |
17 | #include <cstdint> |
18 | #include <functional> | |
19 | #include <lttng/lttng.h> | |
20 | #include <lttng/trace-format-descriptor.h> | |
21 | #include <memory> | |
22 | #include <pthread.h> | |
23 | #include <sys/types.h> | |
24 | #include <unordered_map> | |
25 | #include <urcu/ref.h> | |
26 | ||
27 | struct lttng_payload; | |
28 | struct lttng_payload_view; | |
29 | struct mi_writer; | |
30 | ||
31 | struct lttng_trace_format_descriptor_comm { | |
32 | uint8_t type; | |
33 | }; | |
34 | ||
35 | namespace lttng { | |
36 | class trace_format_descriptor { | |
37 | public: | |
38 | using uptr = std::unique_ptr<trace_format_descriptor>; | |
39 | using sptr = std::shared_ptr<trace_format_descriptor>; | |
0e1fd1e8 | 40 | using csptr = std::shared_ptr<const trace_format_descriptor>; |
55b1df44 JR |
41 | explicit trace_format_descriptor(enum lttng_trace_format_descriptor_type type) : _type(type) |
42 | { | |
43 | } | |
44 | ||
45 | virtual ~trace_format_descriptor(); | |
46 | virtual uptr clone() const = 0; // Virtual constructor (copying) | |
47 | ||
48 | enum lttng_trace_format_descriptor_type type() const | |
49 | { | |
50 | return _type; | |
51 | } | |
52 | ||
8476ce3a JR |
53 | enum relayd_trace_format relayd_type() const |
54 | { | |
55 | switch (_type) { | |
56 | case LTTNG_TRACE_FORMAT_DESCRIPTOR_TYPE_CTF_1: | |
57 | return RELAYD_TRACE_FORMAT_CTF_1; | |
58 | case LTTNG_TRACE_FORMAT_DESCRIPTOR_TYPE_CTF_2: | |
59 | return RELAYD_TRACE_FORMAT_CTF_2; | |
60 | default: | |
61 | /* TODO/FIXME: throw??? */ | |
62 | abort(); | |
63 | } | |
64 | } | |
55b1df44 JR |
65 | virtual lttng_error_code mi_serialize(mi_writer *writer) const final; |
66 | virtual lttng_error_code config_serialize(config_writer *writer) const final; | |
67 | virtual int serialize(lttng_payload *payload) const; | |
68 | static ssize_t create_from_payload(lttng_payload_view *view, uptr& descriptor); | |
69 | ||
70 | friend bool operator==( | |
71 | trace_format_descriptor const& lhs, trace_format_descriptor const& rhs) | |
72 | { | |
73 | if (lhs.type() != rhs.type()) { | |
74 | return false; | |
75 | } | |
76 | return lhs.equal_to(rhs); | |
77 | } | |
78 | ||
79 | friend bool operator!=( | |
80 | trace_format_descriptor const& lhs, trace_format_descriptor const& rhs) | |
81 | { | |
82 | return !(lhs == rhs); | |
83 | } | |
84 | ||
85 | protected: | |
86 | using DeserializerFunction = | |
87 | std::function<ssize_t(lttng_payload_view *view, uptr& descriptor)>; | |
88 | using deserializer_map = | |
89 | std::unordered_map<lttng_trace_format_descriptor_type, DeserializerFunction>; | |
90 | ||
91 | static deserializer_map _deserializer_map; | |
92 | virtual bool equal_to(trace_format_descriptor const& rhs) const = 0; | |
93 | ||
94 | private: | |
95 | enum lttng_trace_format_descriptor_type _type = LTTNG_TRACE_FORMAT_DESCRIPTOR_TYPE_UNKNOWN; | |
96 | ||
97 | virtual lttng_error_code subtype_mi_serialize(mi_writer *writer) const = 0; | |
98 | virtual lttng_error_code subtype_config_serialize(config_writer *writer) const = 0; | |
99 | }; | |
100 | ||
101 | class trace_format_descriptor_ctf1 : public trace_format_descriptor { | |
102 | public: | |
103 | trace_format_descriptor_ctf1() : | |
104 | trace_format_descriptor(LTTNG_TRACE_FORMAT_DESCRIPTOR_TYPE_CTF_1) | |
105 | { | |
106 | } // Default constructor. | |
107 | ||
108 | trace_format_descriptor_ctf1(trace_format_descriptor_ctf1 const&) : | |
109 | trace_format_descriptor_ctf1() | |
110 | { | |
111 | } // Copy constructor | |
112 | ||
113 | uptr clone() const | |
114 | { | |
115 | return uptr(new trace_format_descriptor_ctf1(*this)); | |
116 | } | |
117 | ||
118 | uint64_t getMajor() const | |
119 | { | |
120 | return _major; | |
121 | } | |
122 | uint64_t getMinor() const | |
123 | { | |
124 | return _minor; | |
125 | } | |
126 | ||
127 | protected: | |
128 | static ssize_t deserialize(lttng_payload_view *view, uptr& descriptor); | |
129 | bool equal_to(trace_format_descriptor const& rhs) const override; | |
130 | ||
131 | private: | |
132 | lttng_error_code subtype_mi_serialize(mi_writer *writer) const override; | |
133 | lttng_error_code subtype_config_serialize(config_writer *writer) const override; | |
134 | ||
135 | const uint64_t _major = 1; | |
136 | const uint64_t _minor = 8; | |
137 | }; | |
138 | ||
139 | class trace_format_descriptor_ctf2 : public trace_format_descriptor { | |
140 | public: | |
141 | trace_format_descriptor_ctf2() : | |
142 | trace_format_descriptor(LTTNG_TRACE_FORMAT_DESCRIPTOR_TYPE_CTF_2) | |
143 | { | |
144 | } | |
145 | ||
146 | trace_format_descriptor_ctf2(trace_format_descriptor_ctf2 const&) : | |
147 | trace_format_descriptor_ctf2() | |
148 | { | |
149 | } // Copy constructor | |
150 | ||
151 | uptr clone() const | |
152 | { | |
153 | return uptr(new trace_format_descriptor_ctf2(*this)); | |
154 | } | |
155 | ||
156 | uint64_t getMajor() const | |
157 | { | |
158 | return _major; | |
159 | } | |
160 | uint64_t getMinor() const | |
161 | { | |
162 | return _minor; | |
163 | } | |
164 | ||
165 | protected: | |
166 | static ssize_t deserialize(lttng_payload_view *view, uptr& descriptor); | |
167 | bool equal_to(trace_format_descriptor const& rhs) const override; | |
168 | ||
169 | private: | |
170 | lttng_error_code subtype_mi_serialize(mi_writer *writer) const override; | |
171 | lttng_error_code subtype_config_serialize(config_writer *writer) const override; | |
172 | const uint64_t _major = 2; | |
173 | const uint64_t _minor = 0; | |
174 | }; | |
175 | } // namespace lttng | |
176 | ||
177 | #endif /* LTTNG_TRACE_FORMAT_DESCRIPTOR_INTERNAL_HPP */ |