Commit | Line | Data |
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f3105c67 | 1 | /* |
c0c0989a | 2 | * SPDX-License-Identifier: GPL-2.0-only |
f3105c67 | 3 | * |
c0c0989a MJ |
4 | * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca> |
5 | * Copyright (C) 2011-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
f3105c67 MD |
6 | */ |
7 | ||
8 | #ifndef _LTTNG_UST_CTL_H | |
9 | #define _LTTNG_UST_CTL_H | |
10 | ||
fb31eb73 | 11 | #include <limits.h> |
b4051ad8 | 12 | #include <stddef.h> |
fb31eb73 | 13 | #include <stdint.h> |
ebabbf58 | 14 | #include <stdbool.h> |
32ce8569 | 15 | #include <sys/types.h> |
fb31eb73 FD |
16 | |
17 | #include <lttng/ust-abi.h> | |
eae3c729 | 18 | #include <lttng/ust-utils.h> |
74d81a6c MD |
19 | |
20 | #ifndef LTTNG_UST_UUID_LEN | |
21 | #define LTTNG_UST_UUID_LEN 16 | |
22 | #endif | |
23 | ||
32ce8569 MD |
24 | /* Default unix socket path */ |
25 | #define LTTNG_UST_SOCK_FILENAME \ | |
26 | "lttng-ust-sock-" \ | |
eae3c729 | 27 | lttng_ust_stringify(LTTNG_UST_ABI_MAJOR_VERSION) |
32ce8569 MD |
28 | |
29 | /* | |
30 | * Shared memory files path are automatically related to shm root, e.g. | |
31 | * /dev/shm under linux. | |
32 | */ | |
33 | #define LTTNG_UST_WAIT_FILENAME \ | |
34 | "lttng-ust-wait-" \ | |
eae3c729 | 35 | lttng_ust_stringify(LTTNG_UST_ABI_MAJOR_VERSION) |
32ce8569 | 36 | |
74d81a6c MD |
37 | struct lttng_ust_lib_ring_buffer; |
38 | ||
39 | struct ustctl_consumer_channel_attr { | |
fd17d7ce | 40 | enum lttng_ust_abi_chan_type type; |
74d81a6c MD |
41 | uint64_t subbuf_size; /* bytes */ |
42 | uint64_t num_subbuf; /* power of 2 */ | |
43 | int overwrite; /* 1: overwrite, 0: discard */ | |
44 | unsigned int switch_timer_interval; /* usec */ | |
45 | unsigned int read_timer_interval; /* usec */ | |
fd17d7ce | 46 | enum lttng_ust_abi_output output; /* splice, mmap */ |
6ca18e66 | 47 | uint32_t chan_id; /* channel ID */ |
74d81a6c | 48 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ |
b2c5f61a | 49 | int64_t blocking_timeout; /* Blocking timeout (usec) */ |
9f5ade14 | 50 | } __attribute__((packed)); |
74d81a6c MD |
51 | |
52 | /* | |
53 | * API used by sessiond. | |
54 | */ | |
55 | ||
53f0df51 | 56 | struct lttng_ust_context_attr { |
fd17d7ce | 57 | enum lttng_ust_abi_context_type ctx; |
53f0df51 | 58 | union { |
fd17d7ce | 59 | struct lttng_ust_abi_perf_counter_ctx perf_counter; |
53f0df51 JG |
60 | struct { |
61 | char *provider_name; | |
62 | char *ctx_name; | |
63 | } app_ctx; | |
64 | } u; | |
65 | }; | |
66 | ||
7bc53e94 MD |
67 | /* |
68 | * Error values: all the following functions return: | |
c354a72c | 69 | * >= 0: Success (LTTNG_UST_OK) |
7bc53e94 MD |
70 | * < 0: error code. |
71 | */ | |
1c5e467e | 72 | int ustctl_register_done(int sock); |
f3105c67 | 73 | int ustctl_create_session(int sock); |
fd17d7ce MD |
74 | int ustctl_create_event(int sock, struct lttng_ust_abi_event *ev, |
75 | struct lttng_ust_abi_object_data *channel_data, | |
76 | struct lttng_ust_abi_object_data **event_data); | |
53f0df51 | 77 | int ustctl_add_context(int sock, struct lttng_ust_context_attr *ctx, |
fd17d7ce MD |
78 | struct lttng_ust_abi_object_data *obj_data, |
79 | struct lttng_ust_abi_object_data **context_data); | |
80 | int ustctl_set_filter(int sock, struct lttng_ust_abi_filter_bytecode *bytecode, | |
81 | struct lttng_ust_abi_object_data *obj_data); | |
82 | int ustctl_set_capture(int sock, struct lttng_ust_abi_capture_bytecode *bytecode, | |
83 | struct lttng_ust_abi_object_data *obj_data); | |
84 | int ustctl_set_exclusion(int sock, struct lttng_ust_abi_event_exclusion *exclusion, | |
85 | struct lttng_ust_abi_object_data *obj_data); | |
86 | ||
87 | int ustctl_enable(int sock, struct lttng_ust_abi_object_data *object); | |
88 | int ustctl_disable(int sock, struct lttng_ust_abi_object_data *object); | |
4a6ca058 MD |
89 | int ustctl_start_session(int sock, int handle); |
90 | int ustctl_stop_session(int sock, int handle); | |
f3105c67 | 91 | |
d8d2416d FD |
92 | /* |
93 | * ustctl_create_event notifier_group creates a event notifier group. It | |
94 | * establishes the connection with the application by providing a file | |
95 | * descriptor of the pipe to be used by the application when a event notifier | |
96 | * of that group is fired. It returns a handle to be used when creating event | |
97 | * notifier in that group. | |
98 | */ | |
99 | int ustctl_create_event_notifier_group(int sock, int pipe_fd, | |
fd17d7ce | 100 | struct lttng_ust_abi_object_data **event_notifier_group); |
d8d2416d FD |
101 | |
102 | /* | |
103 | * ustctl_create_event notifier creates a event notifier in a event notifier | |
104 | * group giving a event notifier description and a event notifier group handle. | |
105 | * It returns a event notifier handle to be used when enabling the event | |
106 | * notifier, attaching filter, attaching exclusion, and disabling the event | |
107 | * notifier. | |
108 | */ | |
109 | int ustctl_create_event_notifier(int sock, | |
fd17d7ce MD |
110 | struct lttng_ust_abi_event_notifier *event_notifier, |
111 | struct lttng_ust_abi_object_data *event_notifier_group, | |
112 | struct lttng_ust_abi_object_data **event_notifier_data); | |
d8d2416d | 113 | |
b115631f MD |
114 | /* |
115 | * ustctl_tracepoint_list returns a tracepoint list handle, or negative | |
116 | * error value. | |
117 | */ | |
118 | int ustctl_tracepoint_list(int sock); | |
74d81a6c | 119 | |
b115631f MD |
120 | /* |
121 | * ustctl_tracepoint_list_get is used to iterate on the tp list | |
7bc53e94 MD |
122 | * handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is |
123 | * returned. | |
b115631f MD |
124 | */ |
125 | int ustctl_tracepoint_list_get(int sock, int tp_list_handle, | |
fd17d7ce | 126 | struct lttng_ust_abi_tracepoint_iter *iter); |
b115631f | 127 | |
40003310 MD |
128 | /* |
129 | * ustctl_tracepoint_field_list returns a tracepoint field list handle, | |
130 | * or negative error value. | |
131 | */ | |
132 | int ustctl_tracepoint_field_list(int sock); | |
133 | ||
134 | /* | |
135 | * ustctl_tracepoint_field_list_get is used to iterate on the tp field | |
7bc53e94 MD |
136 | * list handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is |
137 | * returned. | |
40003310 MD |
138 | */ |
139 | int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, | |
fd17d7ce | 140 | struct lttng_ust_abi_field_iter *iter); |
40003310 | 141 | |
fd17d7ce | 142 | int ustctl_tracer_version(int sock, struct lttng_ust_abi_tracer_version *v); |
f3105c67 MD |
143 | int ustctl_wait_quiescent(int sock); |
144 | ||
fd17d7ce | 145 | int ustctl_sock_flush_buffer(int sock, struct lttng_ust_abi_object_data *object); |
f1fffc57 | 146 | |
fd17d7ce | 147 | int ustctl_calibrate(int sock, struct lttng_ust_abi_calibrate *calibrate); |
f3105c67 | 148 | |
74d81a6c | 149 | /* Release object created by members of this API. */ |
fd17d7ce | 150 | int ustctl_release_object(int sock, struct lttng_ust_abi_object_data *data); |
74d81a6c MD |
151 | /* Release handle returned by create session. */ |
152 | int ustctl_release_handle(int sock, int handle); | |
153 | ||
154 | int ustctl_recv_channel_from_consumer(int sock, | |
fd17d7ce | 155 | struct lttng_ust_abi_object_data **channel_data); |
74d81a6c | 156 | int ustctl_recv_stream_from_consumer(int sock, |
fd17d7ce | 157 | struct lttng_ust_abi_object_data **stream_data); |
74d81a6c | 158 | int ustctl_send_channel_to_ust(int sock, int session_handle, |
fd17d7ce | 159 | struct lttng_ust_abi_object_data *channel_data); |
74d81a6c | 160 | int ustctl_send_stream_to_ust(int sock, |
fd17d7ce MD |
161 | struct lttng_ust_abi_object_data *channel_data, |
162 | struct lttng_ust_abi_object_data *stream_data); | |
74d81a6c | 163 | |
12f3dabc MD |
164 | /* |
165 | * ustctl_duplicate_ust_object_data allocated a new object in "dest" if | |
166 | * it succeeds (returns 0). It must be released using | |
167 | * ustctl_release_object() and then freed with free(). | |
168 | */ | |
fd17d7ce MD |
169 | int ustctl_duplicate_ust_object_data(struct lttng_ust_abi_object_data **dest, |
170 | struct lttng_ust_abi_object_data *src); | |
12f3dabc | 171 | |
f3105c67 | 172 | /* |
74d81a6c | 173 | * API used by consumer. |
f3105c67 | 174 | */ |
74d81a6c MD |
175 | |
176 | struct ustctl_consumer_channel; | |
177 | struct ustctl_consumer_stream; | |
178 | struct ustctl_consumer_channel_attr; | |
179 | ||
5ea386c3 MD |
180 | int ustctl_get_nr_stream_per_channel(void); |
181 | ||
74d81a6c | 182 | struct ustctl_consumer_channel * |
5ea386c3 MD |
183 | ustctl_create_channel(struct ustctl_consumer_channel_attr *attr, |
184 | const int *stream_fds, int nr_stream_fds); | |
5224b5c8 | 185 | /* |
74d81a6c MD |
186 | * Each stream created needs to be destroyed before calling |
187 | * ustctl_destroy_channel(). | |
5224b5c8 | 188 | */ |
74d81a6c | 189 | void ustctl_destroy_channel(struct ustctl_consumer_channel *chan); |
f3105c67 | 190 | |
74d81a6c MD |
191 | int ustctl_send_channel_to_sessiond(int sock, |
192 | struct ustctl_consumer_channel *channel); | |
ff0f5728 MD |
193 | int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan); |
194 | int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan); | |
195 | int ustctl_channel_get_wait_fd(struct ustctl_consumer_channel *consumer_chan); | |
196 | int ustctl_channel_get_wakeup_fd(struct ustctl_consumer_channel *consumer_chan); | |
c9023c93 MD |
197 | |
198 | int ustctl_write_metadata_to_channel( | |
199 | struct ustctl_consumer_channel *channel, | |
200 | const char *metadata_str, /* NOT null-terminated */ | |
201 | size_t len); /* metadata length */ | |
3ef94b0e JD |
202 | ssize_t ustctl_write_one_packet_to_channel( |
203 | struct ustctl_consumer_channel *channel, | |
204 | const char *metadata_str, /* NOT null-terminated */ | |
205 | size_t len); /* metadata length */ | |
c9023c93 | 206 | |
74d81a6c MD |
207 | /* |
208 | * Send a NULL stream to finish iteration over all streams of a given | |
209 | * channel. | |
210 | */ | |
211 | int ustctl_send_stream_to_sessiond(int sock, | |
212 | struct ustctl_consumer_stream *stream); | |
213 | int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream); | |
214 | int ustctl_stream_close_wakeup_fd(struct ustctl_consumer_stream *stream); | |
ff0f5728 MD |
215 | int ustctl_stream_get_wait_fd(struct ustctl_consumer_stream *stream); |
216 | int ustctl_stream_get_wakeup_fd(struct ustctl_consumer_stream *stream); | |
f3105c67 | 217 | |
74d81a6c MD |
218 | /* Create/destroy stream buffers for read */ |
219 | struct ustctl_consumer_stream * | |
220 | ustctl_create_stream(struct ustctl_consumer_channel *channel, | |
221 | int cpu); | |
222 | void ustctl_destroy_stream(struct ustctl_consumer_stream *stream); | |
f3105c67 MD |
223 | |
224 | /* For mmap mode, readable without "get" operation */ | |
74d81a6c | 225 | int ustctl_get_mmap_len(struct ustctl_consumer_stream *stream, |
f3105c67 | 226 | unsigned long *len); |
74d81a6c | 227 | int ustctl_get_max_subbuf_size(struct ustctl_consumer_stream *stream, |
f3105c67 MD |
228 | unsigned long *len); |
229 | ||
230 | /* | |
231 | * For mmap mode, operate on the current packet (between get/put or | |
232 | * get_next/put_next). | |
233 | */ | |
74d81a6c MD |
234 | void *ustctl_get_mmap_base(struct ustctl_consumer_stream *stream); |
235 | int ustctl_get_mmap_read_offset(struct ustctl_consumer_stream *stream, | |
236 | unsigned long *off); | |
237 | int ustctl_get_subbuf_size(struct ustctl_consumer_stream *stream, | |
238 | unsigned long *len); | |
239 | int ustctl_get_padded_subbuf_size(struct ustctl_consumer_stream *stream, | |
240 | unsigned long *len); | |
241 | int ustctl_get_next_subbuf(struct ustctl_consumer_stream *stream); | |
242 | int ustctl_put_next_subbuf(struct ustctl_consumer_stream *stream); | |
f3105c67 MD |
243 | |
244 | /* snapshot */ | |
245 | ||
74d81a6c | 246 | int ustctl_snapshot(struct ustctl_consumer_stream *stream); |
f45930b7 | 247 | int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream); |
74d81a6c MD |
248 | int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream, |
249 | unsigned long *pos); | |
250 | int ustctl_snapshot_get_produced(struct ustctl_consumer_stream *stream, | |
251 | unsigned long *pos); | |
252 | int ustctl_get_subbuf(struct ustctl_consumer_stream *stream, | |
253 | unsigned long *pos); | |
254 | int ustctl_put_subbuf(struct ustctl_consumer_stream *stream); | |
5f9d3dbc | 255 | |
74d81a6c MD |
256 | void ustctl_flush_buffer(struct ustctl_consumer_stream *stream, |
257 | int producer_active); | |
beca55a1 | 258 | void ustctl_clear_buffer(struct ustctl_consumer_stream *stream); |
f3105c67 | 259 | |
b2f3252a | 260 | /* index */ |
82df14e4 MD |
261 | |
262 | /* | |
263 | * Getters which need to be used on the current packet (between get/put | |
264 | * or get_next/put_next. | |
265 | */ | |
266 | ||
b2f3252a JD |
267 | int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream, |
268 | uint64_t *timestamp_begin); | |
269 | int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream, | |
270 | uint64_t *timestamp_end); | |
271 | int ustctl_get_events_discarded(struct ustctl_consumer_stream *stream, | |
272 | uint64_t *events_discarded); | |
273 | int ustctl_get_content_size(struct ustctl_consumer_stream *stream, | |
274 | uint64_t *content_size); | |
275 | int ustctl_get_packet_size(struct ustctl_consumer_stream *stream, | |
276 | uint64_t *packet_size); | |
1ff31389 JD |
277 | int ustctl_get_sequence_number(struct ustctl_consumer_stream *stream, |
278 | uint64_t *seq); | |
82df14e4 MD |
279 | |
280 | /* | |
281 | * Getter returning state invariant for the stream, which can be used | |
282 | * without "get" operation. | |
283 | */ | |
284 | ||
285 | int ustctl_get_stream_id(struct ustctl_consumer_stream *stream, | |
286 | uint64_t *stream_id); | |
45a00b05 JD |
287 | int ustctl_get_instance_id(struct ustctl_consumer_stream *stream, |
288 | uint64_t *id); | |
b2f3252a | 289 | |
82df14e4 MD |
290 | /* |
291 | * Getter returning the current timestamp as perceived from the | |
292 | * tracer. | |
293 | */ | |
294 | int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream, | |
295 | uint64_t *ts); | |
296 | ||
57201bb3 MD |
297 | /* returns whether UST has perf counters support. */ |
298 | int ustctl_has_perf_counters(void); | |
299 | ||
f53329f3 JD |
300 | /* Regenerate the statedump. */ |
301 | int ustctl_regenerate_statedump(int sock, int handle); | |
302 | ||
32ce8569 MD |
303 | /* event registry management */ |
304 | ||
305 | enum ustctl_socket_type { | |
306 | USTCTL_SOCKET_CMD = 0, | |
307 | USTCTL_SOCKET_NOTIFY = 1, | |
308 | }; | |
309 | ||
310 | enum ustctl_notify_cmd { | |
311 | USTCTL_NOTIFY_CMD_EVENT = 0, | |
312 | USTCTL_NOTIFY_CMD_CHANNEL = 1, | |
c785c634 | 313 | USTCTL_NOTIFY_CMD_ENUM = 2, |
32ce8569 MD |
314 | }; |
315 | ||
316 | enum ustctl_channel_header { | |
317 | USTCTL_CHANNEL_HEADER_UNKNOWN = 0, | |
318 | USTCTL_CHANNEL_HEADER_COMPACT = 1, | |
319 | USTCTL_CHANNEL_HEADER_LARGE = 2, | |
320 | }; | |
321 | ||
322 | /* event type structures */ | |
323 | ||
324 | enum ustctl_abstract_types { | |
325 | ustctl_atype_integer, | |
218deb69 MD |
326 | ustctl_atype_enum, /* legacy */ |
327 | ustctl_atype_array, /* legacy */ | |
328 | ustctl_atype_sequence, /* legacy */ | |
32ce8569 MD |
329 | ustctl_atype_string, |
330 | ustctl_atype_float, | |
218deb69 MD |
331 | ustctl_atype_variant, /* legacy */ |
332 | ustctl_atype_struct, /* legacy */ | |
333 | ustctl_atype_enum_nestable, | |
334 | ustctl_atype_array_nestable, | |
335 | ustctl_atype_sequence_nestable, | |
336 | ustctl_atype_struct_nestable, | |
337 | ustctl_atype_variant_nestable, | |
32ce8569 MD |
338 | NR_USTCTL_ABSTRACT_TYPES, |
339 | }; | |
340 | ||
341 | enum ustctl_string_encodings { | |
342 | ustctl_encode_none = 0, | |
343 | ustctl_encode_UTF8 = 1, | |
344 | ustctl_encode_ASCII = 2, | |
345 | NR_USTCTL_STRING_ENCODINGS, | |
346 | }; | |
347 | ||
348 | #define USTCTL_UST_INTEGER_TYPE_PADDING 24 | |
349 | struct ustctl_integer_type { | |
350 | uint32_t size; /* in bits */ | |
351 | uint32_t signedness; | |
352 | uint32_t reverse_byte_order; | |
353 | uint32_t base; /* 2, 8, 10, 16, for pretty print */ | |
735ea6a8 | 354 | int32_t encoding; /* enum ustctl_string_encodings */ |
32ce8569 MD |
355 | uint16_t alignment; /* in bits */ |
356 | char padding[USTCTL_UST_INTEGER_TYPE_PADDING]; | |
9f5ade14 | 357 | } __attribute__((packed)); |
32ce8569 MD |
358 | |
359 | #define USTCTL_UST_FLOAT_TYPE_PADDING 24 | |
360 | struct ustctl_float_type { | |
361 | uint32_t exp_dig; /* exponent digits, in bits */ | |
362 | uint32_t mant_dig; /* mantissa digits, in bits */ | |
363 | uint32_t reverse_byte_order; | |
364 | uint16_t alignment; /* in bits */ | |
365 | char padding[USTCTL_UST_FLOAT_TYPE_PADDING]; | |
9f5ade14 | 366 | } __attribute__((packed)); |
32ce8569 | 367 | |
a6f80644 MD |
368 | #define USTCTL_UST_ENUM_VALUE_PADDING 15 |
369 | struct ustctl_enum_value { | |
370 | uint64_t value; | |
371 | uint8_t signedness; | |
372 | char padding[USTCTL_UST_ENUM_VALUE_PADDING]; | |
9f5ade14 | 373 | } __attribute__((packed)); |
a6f80644 | 374 | |
3e762260 PP |
375 | enum ustctl_ust_enum_entry_options { |
376 | USTCTL_UST_ENUM_ENTRY_OPTION_IS_AUTO = 1U << 0, | |
377 | }; | |
378 | ||
c785c634 MD |
379 | #define USTCTL_UST_ENUM_ENTRY_PADDING 32 |
380 | struct ustctl_enum_entry { | |
a6f80644 | 381 | struct ustctl_enum_value start, end; /* start and end are inclusive */ |
fd17d7ce | 382 | char string[LTTNG_UST_ABI_SYM_NAME_LEN]; |
3e762260 PP |
383 | union { |
384 | struct { | |
385 | uint32_t options; | |
9f5ade14 | 386 | } __attribute__((packed)) extra; |
3e762260 PP |
387 | char padding[USTCTL_UST_ENUM_ENTRY_PADDING]; |
388 | } u; | |
9f5ade14 | 389 | } __attribute__((packed)); |
c785c634 | 390 | |
218deb69 | 391 | /* legacy */ |
32ce8569 MD |
392 | #define USTCTL_UST_BASIC_TYPE_PADDING 296 |
393 | union _ustctl_basic_type { | |
394 | struct ustctl_integer_type integer; | |
c785c634 | 395 | struct { |
fd17d7ce | 396 | char name[LTTNG_UST_ABI_SYM_NAME_LEN]; |
c785c634 MD |
397 | struct ustctl_integer_type container_type; |
398 | uint64_t id; /* enum ID in sessiond. */ | |
399 | } enumeration; | |
32ce8569 | 400 | struct { |
735ea6a8 | 401 | int32_t encoding; /* enum ustctl_string_encodings */ |
32ce8569 MD |
402 | } string; |
403 | struct ustctl_float_type _float; | |
404 | char padding[USTCTL_UST_BASIC_TYPE_PADDING]; | |
9f5ade14 | 405 | } __attribute__((packed)); |
32ce8569 | 406 | |
218deb69 | 407 | /* legacy */ |
32ce8569 MD |
408 | struct ustctl_basic_type { |
409 | enum ustctl_abstract_types atype; | |
410 | union { | |
411 | union _ustctl_basic_type basic; | |
412 | } u; | |
9f5ade14 | 413 | } __attribute__((packed)); |
32ce8569 | 414 | |
218deb69 MD |
415 | /* |
416 | * Padding is derived from largest member: u.legacy.sequence which | |
417 | * contains two basic types, each with USTCTL_UST_BASIC_TYPE_PADDING. | |
418 | */ | |
419 | #define USTCTL_UST_TYPE_PADDING (2 * USTCTL_UST_BASIC_TYPE_PADDING) | |
32ce8569 MD |
420 | struct ustctl_type { |
421 | enum ustctl_abstract_types atype; | |
422 | union { | |
218deb69 MD |
423 | struct ustctl_integer_type integer; |
424 | struct ustctl_float_type _float; | |
425 | struct { | |
426 | int32_t encoding; /* enum ustctl_string_encodings */ | |
427 | } string; | |
428 | struct { | |
fd17d7ce | 429 | char name[LTTNG_UST_ABI_SYM_NAME_LEN]; |
218deb69 MD |
430 | uint64_t id; /* enum ID in sessiond. */ |
431 | /* container_type follows after this struct ustctl_field. */ | |
432 | } enum_nestable; | |
32ce8569 | 433 | struct { |
32ce8569 | 434 | uint32_t length; /* num. elems. */ |
218deb69 MD |
435 | uint32_t alignment; |
436 | /* elem_type follows after this struct ustctl_field. */ | |
437 | } array_nestable; | |
32ce8569 | 438 | struct { |
fd17d7ce | 439 | char length_name[LTTNG_UST_ABI_SYM_NAME_LEN]; |
218deb69 MD |
440 | uint32_t alignment; /* Alignment before elements. */ |
441 | /* elem_type follows after the length_type. */ | |
442 | } sequence_nestable; | |
443 | struct { | |
444 | uint32_t nr_fields; | |
445 | uint32_t alignment; | |
446 | /* Followed by nr_fields struct ustctl_field. */ | |
447 | } struct_nestable; | |
53569322 MD |
448 | struct { |
449 | uint32_t nr_choices; | |
fd17d7ce | 450 | char tag_name[LTTNG_UST_ABI_SYM_NAME_LEN]; |
218deb69 | 451 | uint32_t alignment; |
53569322 | 452 | /* Followed by nr_choices struct ustctl_field. */ |
218deb69 MD |
453 | } variant_nestable; |
454 | ||
455 | /* Legacy ABI */ | |
456 | union { | |
457 | union _ustctl_basic_type basic; | |
458 | struct { | |
459 | struct ustctl_basic_type elem_type; | |
460 | uint32_t length; /* num. elems. */ | |
461 | } array; | |
462 | struct { | |
463 | struct ustctl_basic_type length_type; | |
464 | struct ustctl_basic_type elem_type; | |
465 | } sequence; | |
466 | struct { | |
467 | uint32_t nr_fields; | |
468 | /* Followed by nr_fields struct ustctl_field. */ | |
469 | } _struct; | |
470 | struct { | |
471 | uint32_t nr_choices; | |
fd17d7ce | 472 | char tag_name[LTTNG_UST_ABI_SYM_NAME_LEN]; |
218deb69 MD |
473 | /* Followed by nr_choices struct ustctl_field. */ |
474 | } variant; | |
475 | } legacy; | |
32ce8569 MD |
476 | char padding[USTCTL_UST_TYPE_PADDING]; |
477 | } u; | |
9f5ade14 | 478 | } __attribute__((packed)); |
32ce8569 MD |
479 | |
480 | #define USTCTL_UST_FIELD_PADDING 28 | |
481 | struct ustctl_field { | |
fd17d7ce | 482 | char name[LTTNG_UST_ABI_SYM_NAME_LEN]; |
32ce8569 MD |
483 | struct ustctl_type type; |
484 | char padding[USTCTL_UST_FIELD_PADDING]; | |
9f5ade14 | 485 | } __attribute__((packed)); |
32ce8569 MD |
486 | |
487 | /* | |
488 | * Returns 0 on success, negative error value on error. | |
489 | * If an error other than -LTTNG_UST_ERR_UNSUP_MAJOR is returned, | |
490 | * the output fields are not populated. | |
491 | */ | |
492 | int ustctl_recv_reg_msg(int sock, | |
493 | enum ustctl_socket_type *type, | |
494 | uint32_t *major, | |
495 | uint32_t *minor, | |
496 | uint32_t *pid, | |
497 | uint32_t *ppid, | |
498 | uint32_t *uid, | |
499 | uint32_t *gid, | |
500 | uint32_t *bits_per_long, | |
501 | uint32_t *uint8_t_alignment, | |
502 | uint32_t *uint16_t_alignment, | |
503 | uint32_t *uint32_t_alignment, | |
504 | uint32_t *uint64_t_alignment, | |
505 | uint32_t *long_alignment, | |
506 | int *byte_order, | |
507 | char *name); /* size LTTNG_UST_ABI_PROCNAME_LEN */ | |
508 | ||
509 | /* | |
510 | * Returns 0 on success, negative UST or system error value on error. | |
511 | * Receive the notification command. The "notify_cmd" can then be used | |
512 | * by the caller to find out which ustctl_recv_* function should be | |
513 | * called to receive the notification, and which ustctl_reply_* is | |
514 | * appropriate. | |
515 | */ | |
516 | int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd); | |
517 | ||
518 | /* | |
519 | * Returns 0 on success, negative UST or system error value on error. | |
520 | */ | |
521 | int ustctl_recv_register_event(int sock, | |
522 | int *session_objd, /* session descriptor (output) */ | |
523 | int *channel_objd, /* channel descriptor (output) */ | |
524 | char *event_name, /* | |
525 | * event name (output, | |
fd17d7ce | 526 | * size LTTNG_UST_ABI_SYM_NAME_LEN) |
32ce8569 MD |
527 | */ |
528 | int *loglevel, | |
529 | char **signature, /* | |
530 | * event signature | |
531 | * (output, dynamically | |
532 | * allocated, must be free(3)'d | |
533 | * by the caller if function | |
534 | * returns success.) | |
535 | */ | |
536 | size_t *nr_fields, | |
537 | struct ustctl_field **fields, | |
538 | char **model_emf_uri); | |
539 | ||
540 | /* | |
541 | * Returns 0 on success, negative error value on error. | |
542 | */ | |
543 | int ustctl_reply_register_event(int sock, | |
544 | uint32_t id, /* event id (input) */ | |
545 | int ret_code); /* return code. 0 ok, negative error */ | |
546 | ||
c785c634 MD |
547 | /* |
548 | * Returns 0 on success, negative UST or system error value on error. | |
549 | */ | |
550 | int ustctl_recv_register_enum(int sock, | |
551 | int *session_objd, | |
552 | char *enum_name, | |
553 | struct ustctl_enum_entry **entries, | |
554 | size_t *nr_entries); | |
555 | ||
556 | /* | |
557 | * Returns 0 on success, negative error value on error. | |
558 | */ | |
559 | int ustctl_reply_register_enum(int sock, | |
560 | uint64_t id, /* enum id (input) */ | |
561 | int ret_code); | |
562 | ||
32ce8569 MD |
563 | /* |
564 | * Returns 0 on success, negative UST or system error value on error. | |
565 | */ | |
566 | int ustctl_recv_register_channel(int sock, | |
567 | int *session_objd, /* session descriptor (output) */ | |
568 | int *channel_objd, /* channel descriptor (output) */ | |
569 | size_t *nr_fields, /* context fields */ | |
570 | struct ustctl_field **fields); | |
571 | ||
572 | /* | |
573 | * Returns 0 on success, negative error value on error. | |
574 | */ | |
575 | int ustctl_reply_register_channel(int sock, | |
576 | uint32_t chan_id, | |
577 | enum ustctl_channel_header header_type, | |
578 | int ret_code); /* return code. 0 ok, negative error */ | |
579 | ||
ebabbf58 MD |
580 | /* |
581 | * Counter API. | |
582 | */ | |
583 | ||
584 | enum ustctl_counter_bitness { | |
48dff3ac MD |
585 | USTCTL_COUNTER_BITNESS_32 = 0, |
586 | USTCTL_COUNTER_BITNESS_64 = 1, | |
ebabbf58 MD |
587 | }; |
588 | ||
589 | enum ustctl_counter_arithmetic { | |
590 | USTCTL_COUNTER_ARITHMETIC_MODULAR = 0, | |
591 | USTCTL_COUNTER_ARITHMETIC_SATURATION = 1, | |
592 | }; | |
593 | ||
594 | /* Used as alloc flags. */ | |
595 | enum ustctl_counter_alloc { | |
596 | USTCTL_COUNTER_ALLOC_PER_CPU = (1 << 0), | |
597 | USTCTL_COUNTER_ALLOC_GLOBAL = (1 << 1), | |
598 | }; | |
599 | ||
600 | struct ustctl_daemon_counter; | |
601 | ||
602 | int ustctl_get_nr_cpu_per_counter(void); | |
603 | ||
604 | struct ustctl_counter_dimension { | |
605 | uint64_t size; | |
606 | uint64_t underflow_index; | |
607 | uint64_t overflow_index; | |
608 | uint8_t has_underflow; | |
609 | uint8_t has_overflow; | |
610 | }; | |
611 | ||
612 | struct ustctl_daemon_counter * | |
613 | ustctl_create_counter(size_t nr_dimensions, | |
614 | const struct ustctl_counter_dimension *dimensions, | |
615 | int64_t global_sum_step, | |
616 | int global_counter_fd, | |
617 | int nr_counter_cpu_fds, | |
618 | const int *counter_cpu_fds, | |
619 | enum ustctl_counter_bitness bitness, | |
620 | enum ustctl_counter_arithmetic arithmetic, | |
81bc4972 MD |
621 | uint32_t alloc_flags, |
622 | bool coalesce_hits); | |
ebabbf58 MD |
623 | |
624 | int ustctl_create_counter_data(struct ustctl_daemon_counter *counter, | |
fd17d7ce | 625 | struct lttng_ust_abi_object_data **counter_data); |
ebabbf58 MD |
626 | |
627 | int ustctl_create_counter_global_data(struct ustctl_daemon_counter *counter, | |
fd17d7ce | 628 | struct lttng_ust_abi_object_data **counter_global_data); |
ebabbf58 | 629 | int ustctl_create_counter_cpu_data(struct ustctl_daemon_counter *counter, int cpu, |
fd17d7ce | 630 | struct lttng_ust_abi_object_data **counter_cpu_data); |
ebabbf58 MD |
631 | |
632 | /* | |
633 | * Each counter data and counter cpu data created need to be destroyed | |
634 | * before calling ustctl_destroy_counter(). | |
635 | */ | |
636 | void ustctl_destroy_counter(struct ustctl_daemon_counter *counter); | |
637 | ||
638 | int ustctl_send_counter_data_to_ust(int sock, int parent_handle, | |
fd17d7ce | 639 | struct lttng_ust_abi_object_data *counter_data); |
ebabbf58 | 640 | int ustctl_send_counter_global_data_to_ust(int sock, |
fd17d7ce MD |
641 | struct lttng_ust_abi_object_data *counter_data, |
642 | struct lttng_ust_abi_object_data *counter_global_data); | |
ebabbf58 | 643 | int ustctl_send_counter_cpu_data_to_ust(int sock, |
fd17d7ce MD |
644 | struct lttng_ust_abi_object_data *counter_data, |
645 | struct lttng_ust_abi_object_data *counter_cpu_data); | |
ebabbf58 MD |
646 | |
647 | int ustctl_counter_read(struct ustctl_daemon_counter *counter, | |
648 | const size_t *dimension_indexes, | |
649 | int cpu, int64_t *value, | |
650 | bool *overflow, bool *underflow); | |
651 | int ustctl_counter_aggregate(struct ustctl_daemon_counter *counter, | |
652 | const size_t *dimension_indexes, | |
653 | int64_t *value, | |
654 | bool *overflow, bool *underflow); | |
655 | int ustctl_counter_clear(struct ustctl_daemon_counter *counter, | |
656 | const size_t *dimension_indexes); | |
657 | ||
f3105c67 | 658 | #endif /* _LTTNG_UST_CTL_H */ |