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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 | ||
c9e313bc SM |
8 | #include <common/error.hpp> |
9 | #include <common/macros.hpp> | |
10 | #include <common/mi-lttng.hpp> | |
6a751b95 | 11 | #include <float.h> |
c9e313bc SM |
12 | #include <lttng/condition/condition-internal.hpp> |
13 | #include <lttng/condition/session-consumed-size-internal.hpp> | |
319370bd | 14 | #include <lttng/constant.h> |
e8360425 | 15 | #include <math.h> |
e8360425 JD |
16 | #include <time.h> |
17 | ||
18 | #define IS_CONSUMED_SIZE_CONDITION(condition) ( \ | |
19 | lttng_condition_get_type(condition) == LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE \ | |
20 | ) | |
21 | ||
22 | #define IS_CONSUMED_SIZE_EVALUATION(evaluation) ( \ | |
23 | lttng_evaluation_get_type(evaluation) == LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE \ | |
24 | ) | |
25 | ||
26 | static | |
27 | void lttng_condition_session_consumed_size_destroy(struct lttng_condition *condition) | |
28 | { | |
29 | struct lttng_condition_session_consumed_size *consumed_size; | |
30 | ||
31 | consumed_size = container_of(condition, | |
32 | struct lttng_condition_session_consumed_size, parent); | |
33 | ||
34 | free(consumed_size->session_name); | |
35 | free(consumed_size); | |
36 | } | |
37 | ||
38 | static | |
39 | bool lttng_condition_session_consumed_size_validate( | |
40 | const struct lttng_condition *condition) | |
41 | { | |
42 | bool valid = false; | |
43 | struct lttng_condition_session_consumed_size *consumed; | |
44 | ||
45 | if (!condition) { | |
46 | goto end; | |
47 | } | |
48 | ||
49 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
50 | parent); | |
51 | if (!consumed->session_name) { | |
9ef5b6be | 52 | ERR("Invalid session consumed size condition: a target session name must be set."); |
e8360425 JD |
53 | goto end; |
54 | } | |
55 | if (!consumed->consumed_threshold_bytes.set) { | |
9ef5b6be | 56 | ERR("Invalid session consumed size condition: a threshold must be set."); |
e8360425 JD |
57 | goto end; |
58 | } | |
59 | ||
60 | valid = true; | |
61 | end: | |
62 | return valid; | |
63 | } | |
64 | ||
65 | static | |
3647288f JG |
66 | int lttng_condition_session_consumed_size_serialize( |
67 | const struct lttng_condition *condition, | |
c0a66c84 | 68 | struct lttng_payload *payload) |
e8360425 | 69 | { |
3647288f | 70 | int ret; |
e8360425 | 71 | size_t session_name_len; |
3647288f JG |
72 | struct lttng_condition_session_consumed_size *consumed; |
73 | struct lttng_condition_session_consumed_size_comm consumed_comm; | |
e8360425 JD |
74 | |
75 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition)) { | |
76 | ret = -1; | |
77 | goto end; | |
78 | } | |
79 | ||
3647288f JG |
80 | DBG("Serializing session consumed size condition"); |
81 | consumed = container_of(condition, | |
82 | struct lttng_condition_session_consumed_size, | |
e8360425 | 83 | parent); |
3647288f | 84 | |
e8360425 JD |
85 | session_name_len = strlen(consumed->session_name) + 1; |
86 | if (session_name_len > LTTNG_NAME_MAX) { | |
87 | ret = -1; | |
88 | goto end; | |
89 | } | |
3647288f JG |
90 | |
91 | consumed_comm.consumed_threshold_bytes = | |
92 | consumed->consumed_threshold_bytes.value; | |
93 | consumed_comm.session_name_len = (uint32_t) session_name_len; | |
94 | ||
c0a66c84 | 95 | ret = lttng_dynamic_buffer_append(&payload->buffer, &consumed_comm, |
3647288f JG |
96 | sizeof(consumed_comm)); |
97 | if (ret) { | |
98 | goto end; | |
99 | } | |
c0a66c84 JG |
100 | |
101 | ret = lttng_dynamic_buffer_append(&payload->buffer, consumed->session_name, | |
3647288f JG |
102 | session_name_len); |
103 | if (ret) { | |
104 | goto end; | |
e8360425 | 105 | } |
e8360425 JD |
106 | end: |
107 | return ret; | |
108 | } | |
109 | ||
110 | static | |
111 | bool lttng_condition_session_consumed_size_is_equal(const struct lttng_condition *_a, | |
112 | const struct lttng_condition *_b) | |
113 | { | |
114 | bool is_equal = false; | |
115 | struct lttng_condition_session_consumed_size *a, *b; | |
116 | ||
117 | a = container_of(_a, struct lttng_condition_session_consumed_size, parent); | |
118 | b = container_of(_b, struct lttng_condition_session_consumed_size, parent); | |
119 | ||
120 | if (a->consumed_threshold_bytes.set && b->consumed_threshold_bytes.set) { | |
121 | uint64_t a_value, b_value; | |
122 | ||
123 | a_value = a->consumed_threshold_bytes.value; | |
124 | b_value = b->consumed_threshold_bytes.value; | |
125 | if (a_value != b_value) { | |
126 | goto end; | |
127 | } | |
128 | } | |
129 | ||
a0377dfe FD |
130 | LTTNG_ASSERT(a->session_name); |
131 | LTTNG_ASSERT(b->session_name); | |
821d5e92 | 132 | if (strcmp(a->session_name, b->session_name)) { |
e8360425 JD |
133 | goto end; |
134 | } | |
135 | ||
136 | is_equal = true; | |
137 | end: | |
138 | return is_equal; | |
139 | } | |
140 | ||
6a751b95 JR |
141 | static |
142 | enum lttng_error_code lttng_condition_session_consumed_size_mi_serialize( | |
143 | const struct lttng_condition *condition, | |
144 | struct mi_writer *writer) | |
145 | { | |
146 | int ret; | |
147 | enum lttng_error_code ret_code; | |
148 | enum lttng_condition_status status; | |
149 | const char *session_name = NULL; | |
150 | uint64_t threshold_bytes; | |
151 | ||
a0377dfe FD |
152 | LTTNG_ASSERT(condition); |
153 | LTTNG_ASSERT(writer); | |
154 | LTTNG_ASSERT(IS_CONSUMED_SIZE_CONDITION(condition)); | |
6a751b95 JR |
155 | |
156 | status = lttng_condition_session_consumed_size_get_session_name( | |
157 | condition, &session_name); | |
a0377dfe FD |
158 | LTTNG_ASSERT(status == LTTNG_CONDITION_STATUS_OK); |
159 | LTTNG_ASSERT(session_name); | |
6a751b95 JR |
160 | |
161 | status = lttng_condition_session_consumed_size_get_threshold( | |
162 | condition, &threshold_bytes); | |
a0377dfe | 163 | LTTNG_ASSERT(status == LTTNG_CONDITION_STATUS_OK); |
6a751b95 JR |
164 | |
165 | /* Open condition session consumed size element. */ | |
166 | ret = mi_lttng_writer_open_element(writer, | |
167 | mi_lttng_element_condition_session_consumed_size); | |
168 | if (ret) { | |
169 | goto mi_error; | |
170 | } | |
171 | ||
172 | /* Session name. */ | |
173 | ret = mi_lttng_writer_write_element_string( | |
174 | writer, mi_lttng_element_session_name, session_name); | |
175 | if (ret) { | |
176 | goto mi_error; | |
177 | } | |
178 | ||
179 | /* Threshold in bytes. */ | |
180 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
181 | mi_lttng_element_condition_threshold_bytes, | |
182 | threshold_bytes); | |
183 | if (ret) { | |
184 | goto mi_error; | |
185 | } | |
186 | ||
187 | /* Close condition session consumed size element. */ | |
188 | ret = mi_lttng_writer_close_element(writer); | |
189 | if (ret) { | |
190 | goto mi_error; | |
191 | } | |
192 | ||
193 | ret_code = LTTNG_OK; | |
194 | goto end; | |
195 | ||
196 | mi_error: | |
197 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
198 | end: | |
199 | return ret_code; | |
200 | } | |
201 | ||
e8360425 JD |
202 | struct lttng_condition *lttng_condition_session_consumed_size_create(void) |
203 | { | |
204 | struct lttng_condition_session_consumed_size *condition; | |
205 | ||
a6bc4ca9 | 206 | condition = (lttng_condition_session_consumed_size *) zmalloc(sizeof(struct lttng_condition_session_consumed_size)); |
e8360425 JD |
207 | if (!condition) { |
208 | return NULL; | |
209 | } | |
210 | ||
211 | lttng_condition_init(&condition->parent, LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE); | |
212 | condition->parent.validate = lttng_condition_session_consumed_size_validate; | |
213 | condition->parent.serialize = lttng_condition_session_consumed_size_serialize; | |
214 | condition->parent.equal = lttng_condition_session_consumed_size_is_equal; | |
215 | condition->parent.destroy = lttng_condition_session_consumed_size_destroy; | |
6a751b95 | 216 | condition->parent.mi_serialize = lttng_condition_session_consumed_size_mi_serialize; |
e8360425 JD |
217 | return &condition->parent; |
218 | } | |
219 | ||
220 | static | |
c0a66c84 JG |
221 | ssize_t init_condition_from_payload(struct lttng_condition *condition, |
222 | struct lttng_payload_view *src_view) | |
e8360425 JD |
223 | { |
224 | ssize_t ret, condition_size; | |
225 | enum lttng_condition_status status; | |
e8360425 | 226 | const char *session_name; |
3e6e0df2 JG |
227 | struct lttng_buffer_view session_name_view; |
228 | const struct lttng_condition_session_consumed_size_comm *condition_comm; | |
229 | struct lttng_payload_view condition_comm_view = lttng_payload_view_from_view( | |
230 | src_view, 0, sizeof(*condition_comm)); | |
e8360425 | 231 | |
3e6e0df2 | 232 | if (!lttng_payload_view_is_valid(&condition_comm_view)) { |
e8360425 JD |
233 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header"); |
234 | ret = -1; | |
235 | goto end; | |
236 | } | |
237 | ||
3e6e0df2 JG |
238 | condition_comm = (typeof(condition_comm)) condition_comm_view.buffer.data; |
239 | session_name_view = lttng_buffer_view_from_view(&src_view->buffer, | |
240 | sizeof(*condition_comm), condition_comm->session_name_len); | |
e8360425 JD |
241 | |
242 | if (condition_comm->session_name_len > LTTNG_NAME_MAX) { | |
243 | ERR("Failed to initialize from malformed condition buffer: name exceeds LTTNG_MAX_NAME"); | |
244 | ret = -1; | |
245 | goto end; | |
246 | } | |
247 | ||
3e6e0df2 | 248 | if (!lttng_buffer_view_is_valid(&session_name_view)) { |
e8360425 JD |
249 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain element names"); |
250 | ret = -1; | |
251 | goto end; | |
252 | } | |
253 | ||
254 | status = lttng_condition_session_consumed_size_set_threshold(condition, | |
255 | condition_comm->consumed_threshold_bytes); | |
256 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
9ef5b6be | 257 | ERR("Failed to initialize session consumed size condition threshold"); |
e8360425 JD |
258 | ret = -1; |
259 | goto end; | |
260 | } | |
261 | ||
3e6e0df2 | 262 | session_name = session_name_view.data; |
e8360425 JD |
263 | if (*(session_name + condition_comm->session_name_len - 1) != '\0') { |
264 | ERR("Malformed session name encountered in condition buffer"); | |
265 | ret = -1; | |
266 | goto end; | |
267 | } | |
268 | ||
269 | status = lttng_condition_session_consumed_size_set_session_name(condition, | |
270 | session_name); | |
271 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
9ef5b6be | 272 | ERR("Failed to set session consumed size condition's session name"); |
e8360425 JD |
273 | ret = -1; |
274 | goto end; | |
275 | } | |
276 | ||
277 | if (!lttng_condition_validate(condition)) { | |
278 | ret = -1; | |
279 | goto end; | |
280 | } | |
281 | ||
282 | condition_size = sizeof(*condition_comm) + | |
283 | (ssize_t) condition_comm->session_name_len; | |
284 | ret = condition_size; | |
285 | end: | |
286 | return ret; | |
287 | } | |
288 | ||
c0a66c84 JG |
289 | ssize_t lttng_condition_session_consumed_size_create_from_payload( |
290 | struct lttng_payload_view *view, | |
e8360425 JD |
291 | struct lttng_condition **_condition) |
292 | { | |
293 | ssize_t ret; | |
294 | struct lttng_condition *condition = | |
295 | lttng_condition_session_consumed_size_create(); | |
296 | ||
297 | if (!_condition || !condition) { | |
298 | ret = -1; | |
299 | goto error; | |
300 | } | |
301 | ||
c0a66c84 | 302 | ret = init_condition_from_payload(condition, view); |
e8360425 JD |
303 | if (ret < 0) { |
304 | goto error; | |
305 | } | |
306 | ||
307 | *_condition = condition; | |
308 | return ret; | |
309 | error: | |
310 | lttng_condition_destroy(condition); | |
311 | return ret; | |
312 | } | |
313 | ||
314 | static | |
c0a66c84 JG |
315 | struct lttng_evaluation *create_evaluation_from_payload( |
316 | const struct lttng_payload_view *view) | |
e8360425 JD |
317 | { |
318 | const struct lttng_evaluation_session_consumed_size_comm *comm = | |
c0a66c84 | 319 | (typeof(comm)) view->buffer.data; |
e8360425 JD |
320 | struct lttng_evaluation *evaluation = NULL; |
321 | ||
c0a66c84 | 322 | if (view->buffer.size < sizeof(*comm)) { |
e8360425 JD |
323 | goto end; |
324 | } | |
325 | ||
5f2c1c0f | 326 | evaluation = lttng_evaluation_session_consumed_size_create( |
e8360425 JD |
327 | comm->session_consumed); |
328 | end: | |
329 | return evaluation; | |
330 | } | |
331 | ||
c0a66c84 JG |
332 | ssize_t lttng_evaluation_session_consumed_size_create_from_payload( |
333 | struct lttng_payload_view *view, | |
e8360425 JD |
334 | struct lttng_evaluation **_evaluation) |
335 | { | |
336 | ssize_t ret; | |
337 | struct lttng_evaluation *evaluation = NULL; | |
338 | ||
339 | if (!_evaluation) { | |
340 | ret = -1; | |
341 | goto error; | |
342 | } | |
343 | ||
c0a66c84 | 344 | evaluation = create_evaluation_from_payload(view); |
e8360425 JD |
345 | if (!evaluation) { |
346 | ret = -1; | |
347 | goto error; | |
348 | } | |
349 | ||
350 | *_evaluation = evaluation; | |
351 | ret = sizeof(struct lttng_evaluation_session_consumed_size_comm); | |
352 | return ret; | |
353 | error: | |
354 | lttng_evaluation_destroy(evaluation); | |
355 | return ret; | |
356 | } | |
357 | ||
358 | enum lttng_condition_status | |
359 | lttng_condition_session_consumed_size_get_threshold( | |
360 | const struct lttng_condition *condition, | |
361 | uint64_t *consumed_threshold_bytes) | |
362 | { | |
363 | struct lttng_condition_session_consumed_size *consumed; | |
364 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
365 | ||
366 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || !consumed_threshold_bytes) { | |
367 | status = LTTNG_CONDITION_STATUS_INVALID; | |
368 | goto end; | |
369 | } | |
370 | ||
371 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
372 | parent); | |
373 | if (!consumed->consumed_threshold_bytes.set) { | |
374 | status = LTTNG_CONDITION_STATUS_UNSET; | |
375 | goto end; | |
376 | } | |
377 | *consumed_threshold_bytes = consumed->consumed_threshold_bytes.value; | |
378 | end: | |
379 | return status; | |
380 | } | |
381 | ||
382 | enum lttng_condition_status | |
383 | lttng_condition_session_consumed_size_set_threshold( | |
384 | struct lttng_condition *condition, uint64_t consumed_threshold_bytes) | |
385 | { | |
386 | struct lttng_condition_session_consumed_size *consumed; | |
387 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
388 | ||
389 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition)) { | |
390 | status = LTTNG_CONDITION_STATUS_INVALID; | |
391 | goto end; | |
392 | } | |
393 | ||
394 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
395 | parent); | |
396 | consumed->consumed_threshold_bytes.set = true; | |
397 | consumed->consumed_threshold_bytes.value = consumed_threshold_bytes; | |
398 | end: | |
399 | return status; | |
400 | } | |
401 | ||
402 | enum lttng_condition_status | |
403 | lttng_condition_session_consumed_size_get_session_name( | |
404 | const struct lttng_condition *condition, | |
405 | const char **session_name) | |
406 | { | |
407 | struct lttng_condition_session_consumed_size *consumed; | |
408 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
409 | ||
410 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || !session_name) { | |
411 | status = LTTNG_CONDITION_STATUS_INVALID; | |
412 | goto end; | |
413 | } | |
414 | ||
415 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
416 | parent); | |
417 | if (!consumed->session_name) { | |
418 | status = LTTNG_CONDITION_STATUS_UNSET; | |
419 | goto end; | |
420 | } | |
421 | *session_name = consumed->session_name; | |
422 | end: | |
423 | return status; | |
424 | } | |
425 | ||
426 | enum lttng_condition_status | |
427 | lttng_condition_session_consumed_size_set_session_name( | |
428 | struct lttng_condition *condition, const char *session_name) | |
429 | { | |
430 | char *session_name_copy; | |
431 | struct lttng_condition_session_consumed_size *consumed; | |
432 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
433 | ||
434 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || | |
435 | !session_name || strlen(session_name) == 0) { | |
436 | status = LTTNG_CONDITION_STATUS_INVALID; | |
437 | goto end; | |
438 | } | |
439 | ||
440 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
441 | parent); | |
442 | session_name_copy = strdup(session_name); | |
443 | if (!session_name_copy) { | |
444 | status = LTTNG_CONDITION_STATUS_ERROR; | |
445 | goto end; | |
446 | } | |
447 | ||
448 | if (consumed->session_name) { | |
449 | free(consumed->session_name); | |
450 | } | |
451 | consumed->session_name = session_name_copy; | |
452 | end: | |
453 | return status; | |
454 | } | |
455 | ||
456 | static | |
3647288f | 457 | int lttng_evaluation_session_consumed_size_serialize( |
9b63a4aa | 458 | const struct lttng_evaluation *evaluation, |
c0a66c84 | 459 | struct lttng_payload *payload) |
e8360425 | 460 | { |
e8360425 | 461 | struct lttng_evaluation_session_consumed_size *consumed; |
3647288f | 462 | struct lttng_evaluation_session_consumed_size_comm comm; |
e8360425 | 463 | |
c0a66c84 JG |
464 | consumed = container_of(evaluation, |
465 | struct lttng_evaluation_session_consumed_size, parent); | |
3647288f | 466 | comm.session_consumed = consumed->session_consumed; |
c0a66c84 JG |
467 | return lttng_dynamic_buffer_append( |
468 | &payload->buffer, &comm, sizeof(comm)); | |
e8360425 JD |
469 | } |
470 | ||
471 | static | |
472 | void lttng_evaluation_session_consumed_size_destroy( | |
473 | struct lttng_evaluation *evaluation) | |
474 | { | |
475 | struct lttng_evaluation_session_consumed_size *consumed; | |
476 | ||
477 | consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size, | |
478 | parent); | |
479 | free(consumed); | |
480 | } | |
481 | ||
e8360425 | 482 | struct lttng_evaluation *lttng_evaluation_session_consumed_size_create( |
5f2c1c0f | 483 | uint64_t consumed) |
e8360425 JD |
484 | { |
485 | struct lttng_evaluation_session_consumed_size *consumed_eval; | |
486 | ||
a6bc4ca9 | 487 | consumed_eval = (lttng_evaluation_session_consumed_size *) zmalloc(sizeof(struct lttng_evaluation_session_consumed_size)); |
e8360425 JD |
488 | if (!consumed_eval) { |
489 | goto end; | |
490 | } | |
491 | ||
5f2c1c0f | 492 | consumed_eval->parent.type = LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE; |
e8360425 JD |
493 | consumed_eval->session_consumed = consumed; |
494 | consumed_eval->parent.serialize = lttng_evaluation_session_consumed_size_serialize; | |
495 | consumed_eval->parent.destroy = lttng_evaluation_session_consumed_size_destroy; | |
496 | end: | |
497 | return &consumed_eval->parent; | |
498 | } | |
499 | ||
500 | enum lttng_evaluation_status | |
501 | lttng_evaluation_session_consumed_size_get_consumed_size( | |
502 | const struct lttng_evaluation *evaluation, | |
503 | uint64_t *session_consumed) | |
504 | { | |
505 | struct lttng_evaluation_session_consumed_size *consumed; | |
506 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; | |
507 | ||
508 | if (!evaluation || !IS_CONSUMED_SIZE_EVALUATION(evaluation) || | |
509 | !session_consumed) { | |
510 | status = LTTNG_EVALUATION_STATUS_INVALID; | |
511 | goto end; | |
512 | } | |
513 | ||
514 | consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size, | |
515 | parent); | |
516 | *session_consumed = consumed->session_consumed; | |
517 | end: | |
518 | return status; | |
519 | } |