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e8360425 | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
e8360425 | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
e8360425 | 5 | * |
e8360425 JD |
6 | */ |
7 | ||
6a751b95 JR |
8 | #include <assert.h> |
9 | #include <common/error.h> | |
10 | #include <common/macros.h> | |
11 | #include <common/mi-lttng.h> | |
12 | #include <float.h> | |
e8360425 JD |
13 | #include <lttng/condition/condition-internal.h> |
14 | #include <lttng/condition/session-consumed-size-internal.h> | |
319370bd | 15 | #include <lttng/constant.h> |
e8360425 | 16 | #include <math.h> |
e8360425 JD |
17 | #include <time.h> |
18 | ||
19 | #define IS_CONSUMED_SIZE_CONDITION(condition) ( \ | |
20 | lttng_condition_get_type(condition) == LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE \ | |
21 | ) | |
22 | ||
23 | #define IS_CONSUMED_SIZE_EVALUATION(evaluation) ( \ | |
24 | lttng_evaluation_get_type(evaluation) == LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE \ | |
25 | ) | |
26 | ||
27 | static | |
28 | void lttng_condition_session_consumed_size_destroy(struct lttng_condition *condition) | |
29 | { | |
30 | struct lttng_condition_session_consumed_size *consumed_size; | |
31 | ||
32 | consumed_size = container_of(condition, | |
33 | struct lttng_condition_session_consumed_size, parent); | |
34 | ||
35 | free(consumed_size->session_name); | |
36 | free(consumed_size); | |
37 | } | |
38 | ||
39 | static | |
40 | bool lttng_condition_session_consumed_size_validate( | |
41 | const struct lttng_condition *condition) | |
42 | { | |
43 | bool valid = false; | |
44 | struct lttng_condition_session_consumed_size *consumed; | |
45 | ||
46 | if (!condition) { | |
47 | goto end; | |
48 | } | |
49 | ||
50 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
51 | parent); | |
52 | if (!consumed->session_name) { | |
9ef5b6be | 53 | ERR("Invalid session consumed size condition: a target session name must be set."); |
e8360425 JD |
54 | goto end; |
55 | } | |
56 | if (!consumed->consumed_threshold_bytes.set) { | |
9ef5b6be | 57 | ERR("Invalid session consumed size condition: a threshold must be set."); |
e8360425 JD |
58 | goto end; |
59 | } | |
60 | ||
61 | valid = true; | |
62 | end: | |
63 | return valid; | |
64 | } | |
65 | ||
66 | static | |
3647288f JG |
67 | int lttng_condition_session_consumed_size_serialize( |
68 | const struct lttng_condition *condition, | |
c0a66c84 | 69 | struct lttng_payload *payload) |
e8360425 | 70 | { |
3647288f | 71 | int ret; |
e8360425 | 72 | size_t session_name_len; |
3647288f JG |
73 | struct lttng_condition_session_consumed_size *consumed; |
74 | struct lttng_condition_session_consumed_size_comm consumed_comm; | |
e8360425 JD |
75 | |
76 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition)) { | |
77 | ret = -1; | |
78 | goto end; | |
79 | } | |
80 | ||
3647288f JG |
81 | DBG("Serializing session consumed size condition"); |
82 | consumed = container_of(condition, | |
83 | struct lttng_condition_session_consumed_size, | |
e8360425 | 84 | parent); |
3647288f | 85 | |
e8360425 JD |
86 | session_name_len = strlen(consumed->session_name) + 1; |
87 | if (session_name_len > LTTNG_NAME_MAX) { | |
88 | ret = -1; | |
89 | goto end; | |
90 | } | |
3647288f JG |
91 | |
92 | consumed_comm.consumed_threshold_bytes = | |
93 | consumed->consumed_threshold_bytes.value; | |
94 | consumed_comm.session_name_len = (uint32_t) session_name_len; | |
95 | ||
c0a66c84 | 96 | ret = lttng_dynamic_buffer_append(&payload->buffer, &consumed_comm, |
3647288f JG |
97 | sizeof(consumed_comm)); |
98 | if (ret) { | |
99 | goto end; | |
100 | } | |
c0a66c84 JG |
101 | |
102 | ret = lttng_dynamic_buffer_append(&payload->buffer, consumed->session_name, | |
3647288f JG |
103 | session_name_len); |
104 | if (ret) { | |
105 | goto end; | |
e8360425 | 106 | } |
e8360425 JD |
107 | end: |
108 | return ret; | |
109 | } | |
110 | ||
111 | static | |
112 | bool lttng_condition_session_consumed_size_is_equal(const struct lttng_condition *_a, | |
113 | const struct lttng_condition *_b) | |
114 | { | |
115 | bool is_equal = false; | |
116 | struct lttng_condition_session_consumed_size *a, *b; | |
117 | ||
118 | a = container_of(_a, struct lttng_condition_session_consumed_size, parent); | |
119 | b = container_of(_b, struct lttng_condition_session_consumed_size, parent); | |
120 | ||
121 | if (a->consumed_threshold_bytes.set && b->consumed_threshold_bytes.set) { | |
122 | uint64_t a_value, b_value; | |
123 | ||
124 | a_value = a->consumed_threshold_bytes.value; | |
125 | b_value = b->consumed_threshold_bytes.value; | |
126 | if (a_value != b_value) { | |
127 | goto end; | |
128 | } | |
129 | } | |
130 | ||
821d5e92 JG |
131 | assert(a->session_name); |
132 | assert(b->session_name); | |
133 | if (strcmp(a->session_name, b->session_name)) { | |
e8360425 JD |
134 | goto end; |
135 | } | |
136 | ||
137 | is_equal = true; | |
138 | end: | |
139 | return is_equal; | |
140 | } | |
141 | ||
6a751b95 JR |
142 | static |
143 | enum lttng_error_code lttng_condition_session_consumed_size_mi_serialize( | |
144 | const struct lttng_condition *condition, | |
145 | struct mi_writer *writer) | |
146 | { | |
147 | int ret; | |
148 | enum lttng_error_code ret_code; | |
149 | enum lttng_condition_status status; | |
150 | const char *session_name = NULL; | |
151 | uint64_t threshold_bytes; | |
152 | ||
153 | assert(condition); | |
154 | assert(writer); | |
155 | assert(IS_CONSUMED_SIZE_CONDITION(condition)); | |
156 | ||
157 | status = lttng_condition_session_consumed_size_get_session_name( | |
158 | condition, &session_name); | |
159 | assert(status == LTTNG_CONDITION_STATUS_OK); | |
160 | assert(session_name); | |
161 | ||
162 | status = lttng_condition_session_consumed_size_get_threshold( | |
163 | condition, &threshold_bytes); | |
164 | assert(status == LTTNG_CONDITION_STATUS_OK); | |
165 | ||
166 | /* Open condition session consumed size element. */ | |
167 | ret = mi_lttng_writer_open_element(writer, | |
168 | mi_lttng_element_condition_session_consumed_size); | |
169 | if (ret) { | |
170 | goto mi_error; | |
171 | } | |
172 | ||
173 | /* Session name. */ | |
174 | ret = mi_lttng_writer_write_element_string( | |
175 | writer, mi_lttng_element_session_name, session_name); | |
176 | if (ret) { | |
177 | goto mi_error; | |
178 | } | |
179 | ||
180 | /* Threshold in bytes. */ | |
181 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
182 | mi_lttng_element_condition_threshold_bytes, | |
183 | threshold_bytes); | |
184 | if (ret) { | |
185 | goto mi_error; | |
186 | } | |
187 | ||
188 | /* Close condition session consumed size element. */ | |
189 | ret = mi_lttng_writer_close_element(writer); | |
190 | if (ret) { | |
191 | goto mi_error; | |
192 | } | |
193 | ||
194 | ret_code = LTTNG_OK; | |
195 | goto end; | |
196 | ||
197 | mi_error: | |
198 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
199 | end: | |
200 | return ret_code; | |
201 | } | |
202 | ||
e8360425 JD |
203 | struct lttng_condition *lttng_condition_session_consumed_size_create(void) |
204 | { | |
205 | struct lttng_condition_session_consumed_size *condition; | |
206 | ||
207 | condition = zmalloc(sizeof(struct lttng_condition_session_consumed_size)); | |
208 | if (!condition) { | |
209 | return NULL; | |
210 | } | |
211 | ||
212 | lttng_condition_init(&condition->parent, LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE); | |
213 | condition->parent.validate = lttng_condition_session_consumed_size_validate; | |
214 | condition->parent.serialize = lttng_condition_session_consumed_size_serialize; | |
215 | condition->parent.equal = lttng_condition_session_consumed_size_is_equal; | |
216 | condition->parent.destroy = lttng_condition_session_consumed_size_destroy; | |
6a751b95 | 217 | condition->parent.mi_serialize = lttng_condition_session_consumed_size_mi_serialize; |
e8360425 JD |
218 | return &condition->parent; |
219 | } | |
220 | ||
221 | static | |
c0a66c84 JG |
222 | ssize_t init_condition_from_payload(struct lttng_condition *condition, |
223 | struct lttng_payload_view *src_view) | |
e8360425 JD |
224 | { |
225 | ssize_t ret, condition_size; | |
226 | enum lttng_condition_status status; | |
e8360425 | 227 | const char *session_name; |
3e6e0df2 JG |
228 | struct lttng_buffer_view session_name_view; |
229 | const struct lttng_condition_session_consumed_size_comm *condition_comm; | |
230 | struct lttng_payload_view condition_comm_view = lttng_payload_view_from_view( | |
231 | src_view, 0, sizeof(*condition_comm)); | |
e8360425 | 232 | |
3e6e0df2 | 233 | if (!lttng_payload_view_is_valid(&condition_comm_view)) { |
e8360425 JD |
234 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header"); |
235 | ret = -1; | |
236 | goto end; | |
237 | } | |
238 | ||
3e6e0df2 JG |
239 | condition_comm = (typeof(condition_comm)) condition_comm_view.buffer.data; |
240 | session_name_view = lttng_buffer_view_from_view(&src_view->buffer, | |
241 | sizeof(*condition_comm), condition_comm->session_name_len); | |
e8360425 JD |
242 | |
243 | if (condition_comm->session_name_len > LTTNG_NAME_MAX) { | |
244 | ERR("Failed to initialize from malformed condition buffer: name exceeds LTTNG_MAX_NAME"); | |
245 | ret = -1; | |
246 | goto end; | |
247 | } | |
248 | ||
3e6e0df2 | 249 | if (!lttng_buffer_view_is_valid(&session_name_view)) { |
e8360425 JD |
250 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain element names"); |
251 | ret = -1; | |
252 | goto end; | |
253 | } | |
254 | ||
255 | status = lttng_condition_session_consumed_size_set_threshold(condition, | |
256 | condition_comm->consumed_threshold_bytes); | |
257 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
9ef5b6be | 258 | ERR("Failed to initialize session consumed size condition threshold"); |
e8360425 JD |
259 | ret = -1; |
260 | goto end; | |
261 | } | |
262 | ||
3e6e0df2 | 263 | session_name = session_name_view.data; |
e8360425 JD |
264 | if (*(session_name + condition_comm->session_name_len - 1) != '\0') { |
265 | ERR("Malformed session name encountered in condition buffer"); | |
266 | ret = -1; | |
267 | goto end; | |
268 | } | |
269 | ||
270 | status = lttng_condition_session_consumed_size_set_session_name(condition, | |
271 | session_name); | |
272 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
9ef5b6be | 273 | ERR("Failed to set session consumed size condition's session name"); |
e8360425 JD |
274 | ret = -1; |
275 | goto end; | |
276 | } | |
277 | ||
278 | if (!lttng_condition_validate(condition)) { | |
279 | ret = -1; | |
280 | goto end; | |
281 | } | |
282 | ||
283 | condition_size = sizeof(*condition_comm) + | |
284 | (ssize_t) condition_comm->session_name_len; | |
285 | ret = condition_size; | |
286 | end: | |
287 | return ret; | |
288 | } | |
289 | ||
290 | LTTNG_HIDDEN | |
c0a66c84 JG |
291 | ssize_t lttng_condition_session_consumed_size_create_from_payload( |
292 | struct lttng_payload_view *view, | |
e8360425 JD |
293 | struct lttng_condition **_condition) |
294 | { | |
295 | ssize_t ret; | |
296 | struct lttng_condition *condition = | |
297 | lttng_condition_session_consumed_size_create(); | |
298 | ||
299 | if (!_condition || !condition) { | |
300 | ret = -1; | |
301 | goto error; | |
302 | } | |
303 | ||
c0a66c84 | 304 | ret = init_condition_from_payload(condition, view); |
e8360425 JD |
305 | if (ret < 0) { |
306 | goto error; | |
307 | } | |
308 | ||
309 | *_condition = condition; | |
310 | return ret; | |
311 | error: | |
312 | lttng_condition_destroy(condition); | |
313 | return ret; | |
314 | } | |
315 | ||
316 | static | |
c0a66c84 JG |
317 | struct lttng_evaluation *create_evaluation_from_payload( |
318 | const struct lttng_payload_view *view) | |
e8360425 JD |
319 | { |
320 | const struct lttng_evaluation_session_consumed_size_comm *comm = | |
c0a66c84 | 321 | (typeof(comm)) view->buffer.data; |
e8360425 JD |
322 | struct lttng_evaluation *evaluation = NULL; |
323 | ||
c0a66c84 | 324 | if (view->buffer.size < sizeof(*comm)) { |
e8360425 JD |
325 | goto end; |
326 | } | |
327 | ||
5f2c1c0f | 328 | evaluation = lttng_evaluation_session_consumed_size_create( |
e8360425 JD |
329 | comm->session_consumed); |
330 | end: | |
331 | return evaluation; | |
332 | } | |
333 | ||
334 | LTTNG_HIDDEN | |
c0a66c84 JG |
335 | ssize_t lttng_evaluation_session_consumed_size_create_from_payload( |
336 | struct lttng_payload_view *view, | |
e8360425 JD |
337 | struct lttng_evaluation **_evaluation) |
338 | { | |
339 | ssize_t ret; | |
340 | struct lttng_evaluation *evaluation = NULL; | |
341 | ||
342 | if (!_evaluation) { | |
343 | ret = -1; | |
344 | goto error; | |
345 | } | |
346 | ||
c0a66c84 | 347 | evaluation = create_evaluation_from_payload(view); |
e8360425 JD |
348 | if (!evaluation) { |
349 | ret = -1; | |
350 | goto error; | |
351 | } | |
352 | ||
353 | *_evaluation = evaluation; | |
354 | ret = sizeof(struct lttng_evaluation_session_consumed_size_comm); | |
355 | return ret; | |
356 | error: | |
357 | lttng_evaluation_destroy(evaluation); | |
358 | return ret; | |
359 | } | |
360 | ||
361 | enum lttng_condition_status | |
362 | lttng_condition_session_consumed_size_get_threshold( | |
363 | const struct lttng_condition *condition, | |
364 | uint64_t *consumed_threshold_bytes) | |
365 | { | |
366 | struct lttng_condition_session_consumed_size *consumed; | |
367 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
368 | ||
369 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || !consumed_threshold_bytes) { | |
370 | status = LTTNG_CONDITION_STATUS_INVALID; | |
371 | goto end; | |
372 | } | |
373 | ||
374 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
375 | parent); | |
376 | if (!consumed->consumed_threshold_bytes.set) { | |
377 | status = LTTNG_CONDITION_STATUS_UNSET; | |
378 | goto end; | |
379 | } | |
380 | *consumed_threshold_bytes = consumed->consumed_threshold_bytes.value; | |
381 | end: | |
382 | return status; | |
383 | } | |
384 | ||
385 | enum lttng_condition_status | |
386 | lttng_condition_session_consumed_size_set_threshold( | |
387 | struct lttng_condition *condition, uint64_t consumed_threshold_bytes) | |
388 | { | |
389 | struct lttng_condition_session_consumed_size *consumed; | |
390 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
391 | ||
392 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition)) { | |
393 | status = LTTNG_CONDITION_STATUS_INVALID; | |
394 | goto end; | |
395 | } | |
396 | ||
397 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
398 | parent); | |
399 | consumed->consumed_threshold_bytes.set = true; | |
400 | consumed->consumed_threshold_bytes.value = consumed_threshold_bytes; | |
401 | end: | |
402 | return status; | |
403 | } | |
404 | ||
405 | enum lttng_condition_status | |
406 | lttng_condition_session_consumed_size_get_session_name( | |
407 | const struct lttng_condition *condition, | |
408 | const char **session_name) | |
409 | { | |
410 | struct lttng_condition_session_consumed_size *consumed; | |
411 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
412 | ||
413 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || !session_name) { | |
414 | status = LTTNG_CONDITION_STATUS_INVALID; | |
415 | goto end; | |
416 | } | |
417 | ||
418 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
419 | parent); | |
420 | if (!consumed->session_name) { | |
421 | status = LTTNG_CONDITION_STATUS_UNSET; | |
422 | goto end; | |
423 | } | |
424 | *session_name = consumed->session_name; | |
425 | end: | |
426 | return status; | |
427 | } | |
428 | ||
429 | enum lttng_condition_status | |
430 | lttng_condition_session_consumed_size_set_session_name( | |
431 | struct lttng_condition *condition, const char *session_name) | |
432 | { | |
433 | char *session_name_copy; | |
434 | struct lttng_condition_session_consumed_size *consumed; | |
435 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
436 | ||
437 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || | |
438 | !session_name || strlen(session_name) == 0) { | |
439 | status = LTTNG_CONDITION_STATUS_INVALID; | |
440 | goto end; | |
441 | } | |
442 | ||
443 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
444 | parent); | |
445 | session_name_copy = strdup(session_name); | |
446 | if (!session_name_copy) { | |
447 | status = LTTNG_CONDITION_STATUS_ERROR; | |
448 | goto end; | |
449 | } | |
450 | ||
451 | if (consumed->session_name) { | |
452 | free(consumed->session_name); | |
453 | } | |
454 | consumed->session_name = session_name_copy; | |
455 | end: | |
456 | return status; | |
457 | } | |
458 | ||
459 | static | |
3647288f | 460 | int lttng_evaluation_session_consumed_size_serialize( |
9b63a4aa | 461 | const struct lttng_evaluation *evaluation, |
c0a66c84 | 462 | struct lttng_payload *payload) |
e8360425 | 463 | { |
e8360425 | 464 | struct lttng_evaluation_session_consumed_size *consumed; |
3647288f | 465 | struct lttng_evaluation_session_consumed_size_comm comm; |
e8360425 | 466 | |
c0a66c84 JG |
467 | consumed = container_of(evaluation, |
468 | struct lttng_evaluation_session_consumed_size, parent); | |
3647288f | 469 | comm.session_consumed = consumed->session_consumed; |
c0a66c84 JG |
470 | return lttng_dynamic_buffer_append( |
471 | &payload->buffer, &comm, sizeof(comm)); | |
e8360425 JD |
472 | } |
473 | ||
474 | static | |
475 | void lttng_evaluation_session_consumed_size_destroy( | |
476 | struct lttng_evaluation *evaluation) | |
477 | { | |
478 | struct lttng_evaluation_session_consumed_size *consumed; | |
479 | ||
480 | consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size, | |
481 | parent); | |
482 | free(consumed); | |
483 | } | |
484 | ||
485 | LTTNG_HIDDEN | |
486 | struct lttng_evaluation *lttng_evaluation_session_consumed_size_create( | |
5f2c1c0f | 487 | uint64_t consumed) |
e8360425 JD |
488 | { |
489 | struct lttng_evaluation_session_consumed_size *consumed_eval; | |
490 | ||
491 | consumed_eval = zmalloc(sizeof(struct lttng_evaluation_session_consumed_size)); | |
492 | if (!consumed_eval) { | |
493 | goto end; | |
494 | } | |
495 | ||
5f2c1c0f | 496 | consumed_eval->parent.type = LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE; |
e8360425 JD |
497 | consumed_eval->session_consumed = consumed; |
498 | consumed_eval->parent.serialize = lttng_evaluation_session_consumed_size_serialize; | |
499 | consumed_eval->parent.destroy = lttng_evaluation_session_consumed_size_destroy; | |
500 | end: | |
501 | return &consumed_eval->parent; | |
502 | } | |
503 | ||
504 | enum lttng_evaluation_status | |
505 | lttng_evaluation_session_consumed_size_get_consumed_size( | |
506 | const struct lttng_evaluation *evaluation, | |
507 | uint64_t *session_consumed) | |
508 | { | |
509 | struct lttng_evaluation_session_consumed_size *consumed; | |
510 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; | |
511 | ||
512 | if (!evaluation || !IS_CONSUMED_SIZE_EVALUATION(evaluation) || | |
513 | !session_consumed) { | |
514 | status = LTTNG_EVALUATION_STATUS_INVALID; | |
515 | goto end; | |
516 | } | |
517 | ||
518 | consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size, | |
519 | parent); | |
520 | *session_consumed = consumed->session_consumed; | |
521 | end: | |
522 | return status; | |
523 | } |