projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| 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_CHANNEL_H | |
| 9 | #define LTTNG_UST_REGISTRY_CHANNEL_H | |
| 10 | ||
| 11 | #include "stream-class.hpp" | |
| 24ed18f2 | 12 | #include "trace-class.hpp" |
| d7bfb9b0 JG |
13 | |
| 14 | #include <common/hashtable/hashtable.hpp> | |
| 15 | ||
| 16 | #include <lttng/lttng.h> | |
| 17 | ||
| d7bfb9b0 | 18 | #include <functional> |
| 28f23191 | 19 | #include <urcu.h> |
| d7bfb9b0 JG |
20 | |
| 21 | struct ust_app; | |
| 22 | ||
| 23 | namespace lttng { | |
| 24 | namespace sessiond { | |
| 25 | namespace ust { | |
| 26 | ||
| 27 | class registry_event; | |
| 28 | ||
| 29 | class registry_channel : public lttng::sessiond::trace::stream_class { | |
| 30 | public: | |
| 31 | using registered_listener_fn = std::function<void(const registry_channel&)>; | |
| 28f23191 JG |
32 | using event_added_listener_fn = |
| 33 | std::function<void(const registry_channel&, const registry_event&)>; | |
| d7bfb9b0 JG |
34 | |
| 35 | registry_channel(uint32_t channel_id, | |
| 28f23191 JG |
36 | const lttng::sessiond::trace::abi& trace_abi, |
| 37 | std::string default_clock_class_name, | |
| 38 | registered_listener_fn channel_registered_listener, | |
| 39 | event_added_listener_fn new_event_listener); | |
| d7bfb9b0 | 40 | void add_event(int session_objd, |
| 28f23191 JG |
41 | int channel_objd, |
| 42 | std::string name, | |
| 43 | std::string signature, | |
| 44 | std::vector<lttng::sessiond::trace::field::cuptr> event_fields, | |
| 45 | int loglevel_value, | |
| 46 | nonstd::optional<std::string> model_emf_uri, | |
| 47 | lttng_buffer_type buffer_type, | |
| 48 | const ust_app& app, | |
| 49 | uint32_t& out_event_id); | |
| cd9adb8b | 50 | ~registry_channel() override; |
| 9d89db29 JG |
51 | registry_channel(const registry_channel&) = delete; |
| 52 | registry_channel(registry_channel&&) = delete; | |
| 53 | registry_channel& operator=(registry_channel&&) = delete; | |
| 54 | registry_channel& operator=(const registry_channel&) = delete; | |
| d7bfb9b0 | 55 | |
| cd9adb8b | 56 | const lttng::sessiond::trace::type *event_context() const final; |
| 4bcf2294 | 57 | void event_context(lttng::sessiond::trace::type::cuptr context); |
| d7bfb9b0 JG |
58 | |
| 59 | /* Channel was registered to at least one application. */ | |
| 60 | bool is_registered() const; | |
| 61 | void set_as_registered(); | |
| 62 | ||
| 63 | uint64_t _key; | |
| 64 | uint64_t _consumer_key; | |
| 65 | ||
| d7bfb9b0 JG |
66 | /* |
| 67 | * Hash table containing events sent by the UST tracer. MUST be accessed | |
| 68 | * with a RCU read side lock acquired. | |
| 69 | */ | |
| 70 | struct lttng_ht *_events; | |
| 71 | struct lttng_ht_node_u64 _node; | |
| 72 | /* For delayed reclaim */ | |
| 73 | struct rcu_head _rcu_head; | |
| 74 | /* Once this value reaches UINT32_MAX, no more id can be allocated. */ | |
| 75 | uint32_t _next_event_id; | |
| 76 | ||
| 77 | private: | |
| cd9adb8b | 78 | void _accept_on_event_classes( |
| 28f23191 | 79 | lttng::sessiond::trace::trace_class_visitor& trace_class_visitor) const final; |
| d7bfb9b0 JG |
80 | |
| 81 | registered_listener_fn _is_registered_listener; | |
| 82 | event_added_listener_fn _event_added_listener; | |
| 83 | /* Indicates if this channel registry has already been registered. */ | |
| 84 | bool _is_registered; | |
| 85 | }; | |
| 86 | ||
| 87 | } /* namespace ust */ | |
| 88 | } /* namespace sessiond */ | |
| 89 | } /* namespace lttng */ | |
| 90 | ||
| 91 | #endif /* LTTNG_UST_REGISTRY_CHANNEL_H */ |