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d0b96690 | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2013 David Goulet <dgoulet@efficios.com> |
aeeb48c6 | 3 | * Copyright (C) 2022 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
d0b96690 | 4 | * |
ab5be9fa | 5 | * SPDX-License-Identifier: GPL-2.0-only |
d0b96690 | 6 | * |
d0b96690 DG |
7 | */ |
8 | ||
9 | #ifndef LTTNG_UST_REGISTRY_H | |
10 | #define LTTNG_UST_REGISTRY_H | |
11 | ||
d7bfb9b0 JG |
12 | #include "event-class.hpp" |
13 | #include "field.hpp" | |
14 | #include "lttng-ust-ctl.hpp" | |
15 | #include "session.hpp" | |
16 | #include "stream-class.hpp" | |
17 | #include "trace-class.hpp" | |
18 | #include "ust-clock-class.hpp" | |
19 | #include "ust-registry-channel.hpp" | |
20 | #include "ust-registry-event.hpp" | |
21 | ||
22 | #include <common/format.hpp> | |
c9e313bc | 23 | #include <common/hashtable/hashtable.hpp> |
d7bfb9b0 JG |
24 | #include <common/locked-reference.hpp> |
25 | #include <common/urcu.hpp> | |
c9e313bc | 26 | #include <common/uuid.hpp> |
d0b96690 | 27 | |
aeeb48c6 JG |
28 | #include <lttng/domain.h> |
29 | ||
d7bfb9b0 JG |
30 | #include <ctime> |
31 | #include <memory> | |
32 | #include <pthread.h> | |
33 | #include <stdint.h> | |
34 | #include <string> | |
35 | #include <type_traits> | |
7972aab2 | 36 | |
d0b96690 DG |
37 | #define CTF_SPEC_MAJOR 1 |
38 | #define CTF_SPEC_MINOR 8 | |
39 | ||
40 | struct ust_app; | |
d7bfb9b0 JG |
41 | class ust_registry_session; |
42 | ||
43 | namespace lttng { | |
44 | namespace sessiond { | |
45 | namespace details { | |
46 | void locked_ust_registry_session_release(ust_registry_session *session); | |
47 | } /* namespace details */ | |
48 | } /* namespace sessiond */ | |
49 | } /* namespace lttng */ | |
d0b96690 | 50 | |
d7bfb9b0 | 51 | class ust_registry_session : public lttng::sessiond::trace::trace_class { |
aeeb48c6 | 52 | public: |
d7bfb9b0 JG |
53 | using locked_ptr = std::unique_ptr<ust_registry_session, |
54 | lttng::details::create_unique_class<ust_registry_session, | |
55 | lttng::sessiond::details::locked_ust_registry_session_release>:: | |
56 | deleter>; | |
aeeb48c6 | 57 | |
d7bfb9b0 JG |
58 | virtual lttng_buffer_type get_buffering_scheme() const noexcept = 0; |
59 | locked_ptr lock(); | |
aeeb48c6 | 60 | |
d7bfb9b0 JG |
61 | void add_channel(uint64_t channel_key); |
62 | lttng::sessiond::ust::registry_channel& get_channel(uint64_t channel_key) const; | |
63 | void remove_channel(uint64_t channel_key, bool notify); | |
64 | ||
65 | void regenerate_metadata(); | |
66 | virtual ~ust_registry_session(); | |
aeeb48c6 | 67 | |
d0b96690 | 68 | /* |
dc2bbdae MD |
69 | * With multiple writers and readers, use this lock to access |
70 | * the registry. Can nest within the ust app session lock. | |
71 | * Also acts as a registry serialization lock. Used by registry | |
72 | * readers to serialize the registry information sent from the | |
73 | * sessiond to the consumerd. | |
74 | * The consumer socket lock nests within this lock. | |
d0b96690 | 75 | */ |
d7bfb9b0 | 76 | mutable pthread_mutex_t _lock; |
d0b96690 | 77 | /* Next channel ID available for a newly registered channel. */ |
aeeb48c6 | 78 | uint32_t _next_channel_id = 0; |
d0b96690 | 79 | /* Once this value reaches UINT32_MAX, no more id can be allocated. */ |
aeeb48c6 | 80 | uint32_t _used_channel_id = 0; |
10b56aef | 81 | /* Next enumeration ID available. */ |
aeeb48c6 | 82 | uint64_t _next_enum_id = 0; |
d0b96690 DG |
83 | |
84 | /* Generated metadata. */ | |
aeeb48c6 JG |
85 | char *_metadata = nullptr; /* NOT null-terminated ! Use memcpy. */ |
86 | size_t _metadata_len = 0, _metadata_alloc_len = 0; | |
d88aee68 | 87 | /* Length of bytes sent to the consumer. */ |
aeeb48c6 | 88 | size_t _metadata_len_sent = 0; |
93ec662e | 89 | /* Current version of the metadata. */ |
aeeb48c6 | 90 | uint64_t _metadata_version = 0; |
d7ba1388 | 91 | |
9aed4377 JG |
92 | /* |
93 | * Those fields are only used when a session is created with | |
94 | * the --shm-path option. In this case, the metadata is output | |
95 | * twice: once to the consumer, as ususal, but a second time | |
96 | * also in the shm path directly. This is done so that a copy | |
97 | * of the metadata that is as fresh as possible is available | |
98 | * on the event of a crash. | |
99 | * | |
100 | * root_shm_path contains the shm-path provided by the user, along with | |
101 | * the session's name and timestamp: | |
102 | * e.g. /tmp/my_shm/my_session-20180612-135822 | |
103 | * | |
104 | * shm_path contains the full path of the memory buffers: | |
105 | * e.g. /tmp/my_shm/my_session-20180612-135822/ust/uid/1000/64-bit | |
106 | * | |
107 | * metadata_path contains the full path to the metadata file that | |
108 | * is kept for the "crash buffer" extraction: | |
aeeb48c6 JG |
109 | * e.g. |
110 | * /tmp/my_shm/my_session-20180612-135822/ust/uid/1000/64-bit/metadata | |
9aed4377 JG |
111 | * |
112 | * Note that this is not the trace's final metadata file. It is | |
113 | * only meant to be used to read the contents of the ring buffers | |
114 | * in the event of a crash. | |
115 | * | |
116 | * metadata_fd is a file descriptor that points to the file at | |
117 | * 'metadata_path'. | |
118 | */ | |
aeeb48c6 JG |
119 | char _root_shm_path[PATH_MAX] = {}; |
120 | char _shm_path[PATH_MAX] = {}; | |
121 | char _metadata_path[PATH_MAX] = {}; | |
122 | /* File-backed metadata FD */ | |
123 | int _metadata_fd = -1; | |
d7ba1388 | 124 | |
45893984 | 125 | /* |
dc2bbdae MD |
126 | * Hash table containing channels sent by the UST tracer. MUST |
127 | * be accessed with a RCU read side lock acquired. | |
45893984 | 128 | */ |
aeeb48c6 JG |
129 | lttng_ht::uptr _channels; |
130 | ||
dc2bbdae MD |
131 | /* |
132 | * Unique key to identify the metadata on the consumer side. | |
133 | */ | |
aeeb48c6 | 134 | uint64_t _metadata_key = 0; |
7972aab2 DG |
135 | /* |
136 | * Indicates if the metadata is closed on the consumer side. This is to | |
137 | * avoid double close of metadata when an application unregisters AND | |
138 | * deletes its sessions. | |
139 | */ | |
aeeb48c6 | 140 | bool _metadata_closed = false; |
4628484a MD |
141 | |
142 | /* User and group owning the session. */ | |
aeeb48c6 JG |
143 | uid_t _uid = -1; |
144 | gid_t _gid = -1; | |
10b56aef MD |
145 | |
146 | /* Enumerations table. */ | |
aeeb48c6 | 147 | lttng_ht::uptr _enums; |
7062f070 JD |
148 | |
149 | /* | |
150 | * Copy of the tracer version when the first app is registered. | |
151 | * It is used if we need to regenerate the metadata. | |
152 | */ | |
aeeb48c6 JG |
153 | uint32_t _app_tracer_version_major = 0; |
154 | uint32_t _app_tracer_version_minor = 0; | |
8de88061 JR |
155 | |
156 | /* The id of the parent session */ | |
d7bfb9b0 JG |
157 | ltt_session::id_t _tracing_id = -1ULL; |
158 | ||
159 | protected: | |
160 | /* Prevent instanciation of this base class. */ | |
161 | ust_registry_session(const struct lttng::sessiond::trace::abi& abi, | |
162 | unsigned int app_tracer_version_major, | |
163 | unsigned int app_tracer_version_minor, | |
164 | const char *root_shm_path, | |
165 | const char *shm_path, | |
166 | uid_t euid, | |
167 | gid_t egid, | |
168 | uint64_t tracing_id); | |
169 | virtual void _visit_environment( | |
170 | lttng::sessiond::trace::trace_class_visitor& trace_class_visitor) | |
171 | const override; | |
172 | void _generate_metadata(); | |
173 | ||
174 | private: | |
175 | uint32_t _get_next_channel_id(); | |
176 | void _increase_metadata_size(size_t reservation_length); | |
177 | void _append_metadata_fragment(const std::string& fragment); | |
178 | void _reset_metadata(); | |
179 | ||
180 | virtual void _accept_on_clock_classes( | |
181 | lttng::sessiond::trace::trace_class_visitor& trace_class_visitor) | |
182 | const override final; | |
183 | virtual void _accept_on_stream_classes( | |
184 | lttng::sessiond::trace::trace_class_visitor& trace_class_visitor) | |
185 | const override final; | |
186 | ||
187 | lttng::sessiond::ust::clock_class _clock; | |
188 | const lttng::sessiond::trace::trace_class_visitor::cuptr _metadata_generating_visitor; | |
aeeb48c6 JG |
189 | }; |
190 | ||
191 | class ust_registry_session_per_uid : public ust_registry_session { | |
192 | public: | |
d7bfb9b0 | 193 | ust_registry_session_per_uid(const struct lttng::sessiond::trace::abi& trace_abi, |
aeeb48c6 JG |
194 | uint32_t major, |
195 | uint32_t minor, | |
196 | const char *root_shm_path, | |
197 | const char *shm_path, | |
198 | uid_t euid, | |
199 | gid_t egid, | |
200 | uint64_t tracing_id, | |
201 | uid_t tracing_uid); | |
202 | ||
203 | virtual lttng_buffer_type get_buffering_scheme() const noexcept override final; | |
204 | ||
d7bfb9b0 JG |
205 | private: |
206 | virtual void _visit_environment( | |
207 | lttng::sessiond::trace::trace_class_visitor& trace_class_visitor) | |
208 | const override final; | |
209 | ||
aeeb48c6 JG |
210 | const uid_t _tracing_uid; |
211 | }; | |
212 | ||
213 | class ust_registry_session_per_pid : public ust_registry_session { | |
214 | public: | |
d7bfb9b0 JG |
215 | ust_registry_session_per_pid(const struct ust_app& app, |
216 | const struct lttng::sessiond::trace::abi& | |
217 | trace_abi, | |
aeeb48c6 JG |
218 | uint32_t major, |
219 | uint32_t minor, | |
220 | const char *root_shm_path, | |
221 | const char *shm_path, | |
222 | uid_t euid, | |
223 | gid_t egid, | |
224 | uint64_t tracing_id); | |
225 | ||
226 | virtual lttng_buffer_type get_buffering_scheme() const noexcept override final; | |
227 | ||
d7bfb9b0 JG |
228 | private: |
229 | virtual void _visit_environment( | |
230 | lttng::sessiond::trace::trace_class_visitor& trace_class_visitor) | |
231 | const override final; | |
aeeb48c6 JG |
232 | |
233 | const unsigned int _tracer_patch_level_version; | |
234 | const pid_t _vpid; | |
235 | const std::string _procname; | |
236 | const std::time_t _app_creation_time; | |
d0b96690 DG |
237 | }; |
238 | ||
d0b96690 | 239 | |
d7bfb9b0 JG |
240 | namespace lttng { |
241 | namespace sessiond { | |
242 | namespace ust { | |
7972aab2 | 243 | |
d7bfb9b0 JG |
244 | class registry_enum { |
245 | public: | |
246 | using const_rcu_protected_reference = lttng::locked_reference<const registry_enum, lttng::urcu::unique_read_lock>; | |
d0b96690 | 247 | |
d7bfb9b0 JG |
248 | registry_enum(std::string name, enum lttng::sessiond::trace::integer_type::signedness signedness); |
249 | virtual ~registry_enum() = default; | |
d0b96690 | 250 | |
d7bfb9b0 JG |
251 | std::string name; |
252 | enum lttng::sessiond::trace::integer_type::signedness signedness; | |
253 | /* enum id in session */ | |
254 | uint64_t id = -1ULL; | |
10b56aef MD |
255 | /* Enumeration node in session hash table. */ |
256 | struct lttng_ht_node_str node; | |
257 | /* For delayed reclaim. */ | |
258 | struct rcu_head rcu_head; | |
d7bfb9b0 JG |
259 | |
260 | friend bool operator==(const registry_enum& lhs, const registry_enum& rhs) noexcept; | |
261 | protected: | |
262 | virtual bool _is_equal(const registry_enum& other) const noexcept = 0; | |
10b56aef MD |
263 | }; |
264 | ||
d7bfb9b0 JG |
265 | bool operator==(const registry_enum& lhs, const registry_enum& rhs) noexcept; |
266 | ||
267 | namespace details { | |
268 | template <class MappingIntegerType> | |
269 | typename trace::typed_enumeration_type<MappingIntegerType>::mapping mapping_from_ust_ctl_entry( | |
270 | const lttng_ust_ctl_enum_entry& entry) | |
d0b96690 | 271 | { |
d7bfb9b0 JG |
272 | if (entry.u.extra.options & LTTNG_UST_CTL_UST_ENUM_ENTRY_OPTION_IS_AUTO) { |
273 | return {entry.string}; | |
274 | ||
275 | } else { | |
276 | return {entry.string, | |
277 | {(MappingIntegerType) entry.start.value, | |
278 | (MappingIntegerType) entry.end.value}}; | |
279 | } | |
d0b96690 DG |
280 | } |
281 | ||
d7bfb9b0 JG |
282 | template <class MappingIntegerType> |
283 | typename trace::typed_enumeration_type<MappingIntegerType>::mappings mappings_from_ust_ctl_entries( | |
284 | const lttng_ust_ctl_enum_entry *in_entries, size_t in_entry_count) | |
d0b96690 | 285 | { |
d7bfb9b0 JG |
286 | typename trace::typed_enumeration_type<MappingIntegerType>::mappings mappings; |
287 | ||
288 | for (size_t entry_idx = 0; entry_idx < in_entry_count; entry_idx++) { | |
289 | const auto& entry = in_entries[entry_idx]; | |
290 | ||
291 | mappings.emplace_back(mapping_from_ust_ctl_entry<MappingIntegerType>(entry)); | |
d0b96690 DG |
292 | } |
293 | ||
d7bfb9b0 | 294 | return mappings; |
d0b96690 | 295 | } |
d7bfb9b0 | 296 | } /* namespace details */ |
d0b96690 | 297 | |
d7bfb9b0 JG |
298 | template <class MappingIntegerType> |
299 | class registry_typed_enum : public registry_enum { | |
300 | public: | |
301 | registry_typed_enum(const char *in_name, | |
302 | const lttng_ust_ctl_enum_entry *entries, | |
303 | size_t entry_count) : | |
304 | registry_enum(in_name, | |
305 | std::is_signed<MappingIntegerType>::value ? | |
306 | lttng::sessiond::trace::integer_type::signedness::SIGNED : | |
307 | lttng::sessiond::trace::integer_type::signedness::UNSIGNED), | |
308 | _mappings{std::make_shared< | |
309 | typename trace::typed_enumeration_type<MappingIntegerType>::mappings>( | |
310 | details::mappings_from_ust_ctl_entries<MappingIntegerType>( | |
311 | entries, entry_count))} | |
312 | { | |
d0b96690 DG |
313 | } |
314 | ||
d7bfb9b0 JG |
315 | const typename std::shared_ptr<const typename lttng::sessiond::trace::typed_enumeration_type< |
316 | MappingIntegerType>::mappings> | |
317 | _mappings; | |
d0b96690 | 318 | |
d7bfb9b0 JG |
319 | protected: |
320 | virtual bool _is_equal(const registry_enum& base_other) const noexcept | |
321 | { | |
322 | const auto &other = static_cast<decltype(*this)&>(base_other); | |
d0b96690 | 323 | |
d7bfb9b0 JG |
324 | /* Don't compare IDs as some comparisons are performed before an id is assigned. */ |
325 | return this->name == other.name && *this->_mappings == *other._mappings; | |
326 | } | |
327 | }; | |
7972aab2 | 328 | |
d7bfb9b0 JG |
329 | using registry_signed_enum = registry_typed_enum<int64_t>; |
330 | using registry_unsigned_enum = registry_typed_enum<uint64_t>; | |
331 | ||
332 | } /* namespace ust */ | |
333 | } /* namespace sessiond */ | |
334 | } /* namespace lttng */ | |
335 | ||
336 | #ifdef HAVE_LIBLTTNG_UST_CTL | |
45893984 | 337 | |
aeeb48c6 JG |
338 | /* |
339 | * Create per-uid registry with default values. | |
340 | * | |
341 | * Return new instance on success, nullptr on error. | |
342 | */ | |
343 | ust_registry_session *ust_registry_session_per_uid_create( | |
d7bfb9b0 | 344 | const lttng::sessiond::trace::abi& abi, |
af6142cf | 345 | uint32_t major, |
d7ba1388 | 346 | uint32_t minor, |
3d071855 | 347 | const char *root_shm_path, |
d7ba1388 MD |
348 | const char *shm_path, |
349 | uid_t euid, | |
8de88061 JR |
350 | gid_t egid, |
351 | uint64_t tracing_id, | |
352 | uid_t tracing_uid); | |
d0b96690 | 353 | |
aeeb48c6 JG |
354 | /* |
355 | * Create per-pid registry with default values. | |
356 | * | |
357 | * Return new instance on success, nullptr on error. | |
358 | */ | |
359 | ust_registry_session *ust_registry_session_per_pid_create(struct ust_app *app, | |
d7bfb9b0 | 360 | const lttng::sessiond::trace::abi& abi, |
aeeb48c6 JG |
361 | uint32_t major, |
362 | uint32_t minor, | |
363 | const char *root_shm_path, | |
364 | const char *shm_path, | |
365 | uid_t euid, | |
366 | gid_t egid, | |
367 | uint64_t tracing_id); | |
368 | void ust_registry_session_destroy(ust_registry_session *session); | |
369 | ||
d7bfb9b0 JG |
370 | void ust_registry_channel_destroy_event(lttng::sessiond::ust::registry_channel *chan, |
371 | lttng::sessiond::ust::registry_event *event); | |
372 | ||
aeeb48c6 | 373 | int ust_registry_create_or_find_enum(ust_registry_session *session, |
10b56aef | 374 | int session_objd, char *name, |
b623cb6a | 375 | struct lttng_ust_ctl_enum_entry *entries, size_t nr_entries, |
10b56aef | 376 | uint64_t *enum_id); |
d7bfb9b0 JG |
377 | lttng::sessiond::ust::registry_enum::const_rcu_protected_reference |
378 | ust_registry_lookup_enum_by_id(const ust_registry_session *session, | |
10b56aef | 379 | const char *name, uint64_t id); |
aeeb48c6 | 380 | void ust_registry_destroy_enum(ust_registry_session *reg_session, |
d7bfb9b0 | 381 | lttng::sessiond::ust::registry_enum *reg_enum); |
7972aab2 DG |
382 | #else /* HAVE_LIBLTTNG_UST_CTL */ |
383 | ||
7972aab2 | 384 | static inline |
aeeb48c6 | 385 | ust_registry_session *ust_registry_session_per_uid_create( |
f46376a1 MJ |
386 | uint32_t bits_per_long __attribute__((unused)), |
387 | uint32_t uint8_t_alignment __attribute__((unused)), | |
388 | uint32_t uint16_t_alignment __attribute__((unused)), | |
389 | uint32_t uint32_t_alignment __attribute__((unused)), | |
390 | uint32_t uint64_t_alignment __attribute__((unused)), | |
391 | uint32_t long_alignment __attribute__((unused)), | |
392 | int byte_order __attribute__((unused)), | |
393 | uint32_t major __attribute__((unused)), | |
394 | uint32_t minor __attribute__((unused)), | |
395 | const char *root_shm_path __attribute__((unused)), | |
396 | const char *shm_path __attribute__((unused)), | |
397 | uid_t euid __attribute__((unused)), | |
398 | gid_t egid __attribute__((unused)), | |
399 | uint64_t tracing_id __attribute__((unused)), | |
400 | uid_t tracing_uid __attribute__((unused))) | |
7972aab2 | 401 | { |
aeeb48c6 JG |
402 | return nullptr; |
403 | } | |
404 | ||
405 | static inline | |
406 | ust_registry_session *ust_registry_session_per_pid_create( | |
407 | struct ust_app *app __attribute__((unused)), | |
408 | uint32_t bits_per_long __attribute__((unused)), | |
409 | uint32_t uint8_t_alignment __attribute__((unused)), | |
410 | uint32_t uint16_t_alignment __attribute__((unused)), | |
411 | uint32_t uint32_t_alignment __attribute__((unused)), | |
412 | uint32_t uint64_t_alignment __attribute__((unused)), | |
413 | uint32_t long_alignment __attribute__((unused)), | |
414 | int byte_order __attribute__((unused)), | |
415 | uint32_t major __attribute__((unused)), | |
416 | uint32_t minor __attribute__((unused)), | |
417 | const char *root_shm_path __attribute__((unused)), | |
418 | const char *shm_path __attribute__((unused)), | |
419 | uid_t euid __attribute__((unused)), | |
420 | gid_t egid __attribute__((unused)), | |
421 | uint64_t tracing_id __attribute__((unused))) | |
422 | { | |
423 | return nullptr; | |
7972aab2 | 424 | } |
f46376a1 | 425 | |
7972aab2 | 426 | static inline |
f46376a1 | 427 | void ust_registry_session_destroy( |
aeeb48c6 | 428 | ust_registry_session *session __attribute__((unused))) |
7972aab2 | 429 | {} |
f46376a1 | 430 | |
7972aab2 | 431 | static inline |
f46376a1 | 432 | void ust_registry_destroy_event( |
d7bfb9b0 JG |
433 | lttng::sessiond::ust::registry_channel *chan __attribute__((unused)), |
434 | lttng::sessiond::ust::registry_event *event __attribute__((unused))) | |
7972aab2 DG |
435 | {} |
436 | ||
437 | /* The app object can be NULL for registry shared across applications. */ | |
438 | static inline | |
f46376a1 | 439 | int ust_metadata_session_statedump( |
aeeb48c6 | 440 | ust_registry_session *session __attribute__((unused))) |
7972aab2 DG |
441 | { |
442 | return 0; | |
443 | } | |
f46376a1 | 444 | |
7972aab2 | 445 | static inline |
f46376a1 | 446 | int ust_metadata_channel_statedump( |
aeeb48c6 | 447 | ust_registry_session *session __attribute__((unused)), |
d7bfb9b0 | 448 | lttng::sessiond::ust::registry_channel *chan __attribute__((unused))) |
7972aab2 DG |
449 | { |
450 | return 0; | |
451 | } | |
f46376a1 | 452 | |
7972aab2 | 453 | static inline |
f46376a1 | 454 | int ust_metadata_event_statedump( |
aeeb48c6 | 455 | ust_registry_session *session __attribute__((unused)), |
d7bfb9b0 JG |
456 | lttng::sessiond::ust::registry_channel *chan __attribute__((unused)), |
457 | lttng::sessiond::ust::registry_event *event __attribute__((unused))) | |
7972aab2 DG |
458 | { |
459 | return 0; | |
460 | } | |
f46376a1 | 461 | |
10b56aef | 462 | static inline |
f46376a1 | 463 | int ust_registry_create_or_find_enum( |
aeeb48c6 | 464 | ust_registry_session *session __attribute__((unused)), |
f46376a1 MJ |
465 | int session_objd __attribute__((unused)), |
466 | char *name __attribute__((unused)), | |
467 | struct lttng_ust_ctl_enum_entry *entries __attribute__((unused)), | |
468 | size_t nr_entries __attribute__((unused)), | |
469 | uint64_t *enum_id __attribute__((unused))) | |
10b56aef MD |
470 | { |
471 | return 0; | |
472 | } | |
f46376a1 | 473 | |
10b56aef MD |
474 | static inline |
475 | struct ust_registry_enum * | |
f46376a1 | 476 | ust_registry_lookup_enum_by_id( |
d7bfb9b0 | 477 | const ust_registry_session *session __attribute__((unused)), |
f46376a1 MJ |
478 | const char *name __attribute__((unused)), |
479 | uint64_t id __attribute__((unused))) | |
10b56aef MD |
480 | { |
481 | return NULL; | |
482 | } | |
7972aab2 | 483 | |
aeeb48c6 JG |
484 | static inline |
485 | void ust_registry_destroy_enum(ust_registry_session *reg_session __attribute__((unused)), | |
486 | struct ust_registry_enum *reg_enum __attribute__((unused))) | |
487 | {} | |
488 | ||
7972aab2 DG |
489 | #endif /* HAVE_LIBLTTNG_UST_CTL */ |
490 | ||
d0b96690 | 491 | #endif /* LTTNG_UST_REGISTRY_H */ |