sessiond: registry_event: remove lttng_ht_node_u64 wrapper
[lttng-tools.git] / src / bin / lttng-sessiond / ust-registry-event.hpp
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>
16 #include <vendor/optional.hpp>
17
18 #include <typeinfo>
19
20 namespace lttng {
21 namespace sessiond {
22 namespace ust {
23
24 /*
25 * Event registered from a UST tracer sent to the session daemon. This is
26 * indexed and matched by <event_name/signature>.
27 */
28 class registry_event : public lttng::sessiond::trace::event_class {
29 public:
30 registry_event(unsigned int id,
31 unsigned int stream_class_id,
32 int session_objd,
33 int channel_objd,
34 std::string name,
35 std::string signature,
36 std::vector<lttng::sessiond::trace::field::cuptr> fields,
37 int loglevel_value,
38 nonstd::optional<std::string> model_emf_uri);
39 virtual ~registry_event() = default;
40
41 /* Both objd are set by the tracer. */
42 const int session_objd;
43 const int channel_objd;
44 const std::string signature;
45
46 /*
47 * Flag for this channel if the metadata was dumped once during
48 * registration.
49 */
50 bool _metadata_dumped;
51
52 /*
53 * Node in the ust-registry hash table. The event name is used to
54 * initialize the node and the event_name/signature for the match function.
55 */
56 struct cds_lfht_node _node;
57 struct rcu_head _head;
58 };
59
60 void registry_event_destroy(registry_event *event);
61
62 } /* namespace ust */
63 } /* namespace sessiond */
64 } /* namespace lttng */
65
66 template <>
67 struct fmt::formatter<lttng::sessiond::ust::registry_event> : fmt::formatter<std::string> {
68 template <typename FormatCtx>
69 typename FormatCtx::iterator format(
70 const lttng::sessiond::ust::registry_event& event, FormatCtx& ctx)
71 {
72 return fmt::format_to(ctx.out(),
73 "{{ name = `{}`, signature = `{}`, id = {}, session objd = {}, channel objd = {} }}",
74 event.name, event.signature, event.id, event.session_objd,
75 event.channel_objd);
76 }
77 };
78
79 #endif /* LTTNG_UST_REGISTRY_EVENT_H */
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