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d7bfb9b0 JG |
1 | /* |
2 | * Copyright (C) 2022 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0-only | |
5 | * | |
6 | */ | |
7 | ||
8 | #ifndef LTTNG_UST_REGISTRY_EVENT_H | |
9 | #define LTTNG_UST_REGISTRY_EVENT_H | |
10 | ||
11 | #include "event-class.hpp" | |
12 | #include "field.hpp" | |
13 | ||
14 | #include <common/format.hpp> | |
15 | #include <common/hashtable/hashtable.hpp> | |
28f23191 | 16 | |
d7bfb9b0 JG |
17 | #include <vendor/optional.hpp> |
18 | ||
19 | #include <typeinfo> | |
20 | ||
21 | namespace lttng { | |
22 | namespace sessiond { | |
23 | namespace ust { | |
24 | ||
25 | /* | |
26 | * Event registered from a UST tracer sent to the session daemon. This is | |
27 | * indexed and matched by <event_name/signature>. | |
28 | */ | |
29 | class registry_event : public lttng::sessiond::trace::event_class { | |
30 | public: | |
31 | registry_event(unsigned int id, | |
28f23191 JG |
32 | unsigned int stream_class_id, |
33 | int session_objd, | |
34 | int channel_objd, | |
35 | std::string name, | |
36 | std::string signature, | |
37 | std::vector<lttng::sessiond::trace::field::cuptr> fields, | |
38 | int loglevel_value, | |
39 | nonstd::optional<std::string> model_emf_uri); | |
cd9adb8b | 40 | ~registry_event() override = default; |
9d89db29 JG |
41 | registry_event(const registry_event&) = delete; |
42 | registry_event(registry_event&&) = delete; | |
43 | registry_event& operator=(registry_event&&) = delete; | |
44 | registry_event& operator=(const registry_event&) = delete; | |
d7bfb9b0 JG |
45 | |
46 | /* Both objd are set by the tracer. */ | |
47 | const int session_objd; | |
48 | const int channel_objd; | |
49 | const std::string signature; | |
50 | ||
51 | /* | |
52 | * Flag for this channel if the metadata was dumped once during | |
53 | * registration. | |
54 | */ | |
55 | bool _metadata_dumped; | |
56 | ||
57 | /* | |
58 | * Node in the ust-registry hash table. The event name is used to | |
59 | * initialize the node and the event_name/signature for the match function. | |
60 | */ | |
f139a4f9 JG |
61 | struct cds_lfht_node _node; |
62 | struct rcu_head _head; | |
d7bfb9b0 JG |
63 | }; |
64 | ||
65 | void registry_event_destroy(registry_event *event); | |
66 | ||
67 | } /* namespace ust */ | |
68 | } /* namespace sessiond */ | |
69 | } /* namespace lttng */ | |
70 | ||
11bcbf89 JG |
71 | /* |
72 | * Due to a bug in g++ < 7.1, this specialization must be enclosed in the fmt namespace, | |
73 | * see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56480. | |
74 | */ | |
e2c2bec2 | 75 | namespace fmt { |
d7bfb9b0 | 76 | template <> |
e2c2bec2 | 77 | struct formatter<lttng::sessiond::ust::registry_event> : formatter<std::string> { |
31375c42 | 78 | template <typename FormatContextType> |
28f23191 JG |
79 | typename FormatContextType::iterator |
80 | format(const lttng::sessiond::ust::registry_event& event, FormatContextType& ctx) | |
d7bfb9b0 | 81 | { |
28f23191 JG |
82 | return format_to( |
83 | ctx.out(), | |
84 | "{{ name = `{}`, signature = `{}`, id = {}, session objd = {}, channel objd = {} }}", | |
85 | event.name, | |
86 | event.signature, | |
87 | event.id, | |
88 | event.session_objd, | |
89 | event.channel_objd); | |
d7bfb9b0 JG |
90 | } |
91 | }; | |
e2c2bec2 | 92 | } /* namespace fmt */ |
d7bfb9b0 JG |
93 | |
94 | #endif /* LTTNG_UST_REGISTRY_EVENT_H */ |