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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 | ||
8 | #include <lttng/condition/condition-internal.h> | |
9 | #include <lttng/condition/session-consumed-size-internal.h> | |
319370bd | 10 | #include <lttng/constant.h> |
e8360425 JD |
11 | #include <common/macros.h> |
12 | #include <common/error.h> | |
13 | #include <assert.h> | |
14 | #include <math.h> | |
15 | #include <float.h> | |
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, | |
5024c2ac JR |
68 | struct lttng_dynamic_buffer *buf, |
69 | int *fd_to_send) | |
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 | ||
96 | ret = lttng_dynamic_buffer_append(buf, &consumed_comm, | |
97 | sizeof(consumed_comm)); | |
98 | if (ret) { | |
99 | goto end; | |
100 | } | |
101 | ret = lttng_dynamic_buffer_append(buf, consumed->session_name, | |
102 | session_name_len); | |
103 | if (ret) { | |
104 | goto end; | |
e8360425 | 105 | } |
5024c2ac JR |
106 | |
107 | if (fd_to_send) { | |
108 | /* No fd to send */ | |
109 | *fd_to_send = -1; | |
110 | } | |
e8360425 JD |
111 | end: |
112 | return ret; | |
113 | } | |
114 | ||
115 | static | |
116 | bool lttng_condition_session_consumed_size_is_equal(const struct lttng_condition *_a, | |
117 | const struct lttng_condition *_b) | |
118 | { | |
119 | bool is_equal = false; | |
120 | struct lttng_condition_session_consumed_size *a, *b; | |
121 | ||
122 | a = container_of(_a, struct lttng_condition_session_consumed_size, parent); | |
123 | b = container_of(_b, struct lttng_condition_session_consumed_size, parent); | |
124 | ||
125 | if (a->consumed_threshold_bytes.set && b->consumed_threshold_bytes.set) { | |
126 | uint64_t a_value, b_value; | |
127 | ||
128 | a_value = a->consumed_threshold_bytes.value; | |
129 | b_value = b->consumed_threshold_bytes.value; | |
130 | if (a_value != b_value) { | |
131 | goto end; | |
132 | } | |
133 | } | |
134 | ||
821d5e92 JG |
135 | assert(a->session_name); |
136 | assert(b->session_name); | |
137 | if (strcmp(a->session_name, b->session_name)) { | |
e8360425 JD |
138 | goto end; |
139 | } | |
140 | ||
141 | is_equal = true; | |
142 | end: | |
143 | return is_equal; | |
144 | } | |
145 | ||
146 | struct lttng_condition *lttng_condition_session_consumed_size_create(void) | |
147 | { | |
148 | struct lttng_condition_session_consumed_size *condition; | |
149 | ||
150 | condition = zmalloc(sizeof(struct lttng_condition_session_consumed_size)); | |
151 | if (!condition) { | |
152 | return NULL; | |
153 | } | |
154 | ||
155 | lttng_condition_init(&condition->parent, LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE); | |
156 | condition->parent.validate = lttng_condition_session_consumed_size_validate; | |
157 | condition->parent.serialize = lttng_condition_session_consumed_size_serialize; | |
158 | condition->parent.equal = lttng_condition_session_consumed_size_is_equal; | |
159 | condition->parent.destroy = lttng_condition_session_consumed_size_destroy; | |
160 | return &condition->parent; | |
161 | } | |
162 | ||
163 | static | |
164 | ssize_t init_condition_from_buffer(struct lttng_condition *condition, | |
165 | const struct lttng_buffer_view *src_view) | |
166 | { | |
167 | ssize_t ret, condition_size; | |
168 | enum lttng_condition_status status; | |
169 | const struct lttng_condition_session_consumed_size_comm *condition_comm; | |
170 | const char *session_name; | |
171 | struct lttng_buffer_view names_view; | |
172 | ||
173 | if (src_view->size < sizeof(*condition_comm)) { | |
174 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header"); | |
175 | ret = -1; | |
176 | goto end; | |
177 | } | |
178 | ||
179 | condition_comm = (const struct lttng_condition_session_consumed_size_comm *) src_view->data; | |
180 | names_view = lttng_buffer_view_from_view(src_view, | |
181 | sizeof(*condition_comm), -1); | |
182 | ||
183 | if (condition_comm->session_name_len > LTTNG_NAME_MAX) { | |
184 | ERR("Failed to initialize from malformed condition buffer: name exceeds LTTNG_MAX_NAME"); | |
185 | ret = -1; | |
186 | goto end; | |
187 | } | |
188 | ||
189 | if (names_view.size < condition_comm->session_name_len) { | |
190 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain element names"); | |
191 | ret = -1; | |
192 | goto end; | |
193 | } | |
194 | ||
195 | status = lttng_condition_session_consumed_size_set_threshold(condition, | |
196 | condition_comm->consumed_threshold_bytes); | |
197 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
9ef5b6be | 198 | ERR("Failed to initialize session consumed size condition threshold"); |
e8360425 JD |
199 | ret = -1; |
200 | goto end; | |
201 | } | |
202 | ||
203 | session_name = names_view.data; | |
204 | if (*(session_name + condition_comm->session_name_len - 1) != '\0') { | |
205 | ERR("Malformed session name encountered in condition buffer"); | |
206 | ret = -1; | |
207 | goto end; | |
208 | } | |
209 | ||
210 | status = lttng_condition_session_consumed_size_set_session_name(condition, | |
211 | session_name); | |
212 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
9ef5b6be | 213 | ERR("Failed to set session consumed size condition's session name"); |
e8360425 JD |
214 | ret = -1; |
215 | goto end; | |
216 | } | |
217 | ||
218 | if (!lttng_condition_validate(condition)) { | |
219 | ret = -1; | |
220 | goto end; | |
221 | } | |
222 | ||
223 | condition_size = sizeof(*condition_comm) + | |
224 | (ssize_t) condition_comm->session_name_len; | |
225 | ret = condition_size; | |
226 | end: | |
227 | return ret; | |
228 | } | |
229 | ||
230 | LTTNG_HIDDEN | |
231 | ssize_t lttng_condition_session_consumed_size_create_from_buffer( | |
232 | const struct lttng_buffer_view *view, | |
233 | struct lttng_condition **_condition) | |
234 | { | |
235 | ssize_t ret; | |
236 | struct lttng_condition *condition = | |
237 | lttng_condition_session_consumed_size_create(); | |
238 | ||
239 | if (!_condition || !condition) { | |
240 | ret = -1; | |
241 | goto error; | |
242 | } | |
243 | ||
244 | ret = init_condition_from_buffer(condition, view); | |
245 | if (ret < 0) { | |
246 | goto error; | |
247 | } | |
248 | ||
249 | *_condition = condition; | |
250 | return ret; | |
251 | error: | |
252 | lttng_condition_destroy(condition); | |
253 | return ret; | |
254 | } | |
255 | ||
256 | static | |
257 | struct lttng_evaluation *create_evaluation_from_buffer( | |
e8360425 JD |
258 | const struct lttng_buffer_view *view) |
259 | { | |
260 | const struct lttng_evaluation_session_consumed_size_comm *comm = | |
261 | (const struct lttng_evaluation_session_consumed_size_comm *) view->data; | |
262 | struct lttng_evaluation *evaluation = NULL; | |
263 | ||
264 | if (view->size < sizeof(*comm)) { | |
265 | goto end; | |
266 | } | |
267 | ||
5f2c1c0f | 268 | evaluation = lttng_evaluation_session_consumed_size_create( |
e8360425 JD |
269 | comm->session_consumed); |
270 | end: | |
271 | return evaluation; | |
272 | } | |
273 | ||
274 | LTTNG_HIDDEN | |
275 | ssize_t lttng_evaluation_session_consumed_size_create_from_buffer( | |
276 | const struct lttng_buffer_view *view, | |
277 | struct lttng_evaluation **_evaluation) | |
278 | { | |
279 | ssize_t ret; | |
280 | struct lttng_evaluation *evaluation = NULL; | |
281 | ||
282 | if (!_evaluation) { | |
283 | ret = -1; | |
284 | goto error; | |
285 | } | |
286 | ||
5f2c1c0f | 287 | evaluation = create_evaluation_from_buffer(view); |
e8360425 JD |
288 | if (!evaluation) { |
289 | ret = -1; | |
290 | goto error; | |
291 | } | |
292 | ||
293 | *_evaluation = evaluation; | |
294 | ret = sizeof(struct lttng_evaluation_session_consumed_size_comm); | |
295 | return ret; | |
296 | error: | |
297 | lttng_evaluation_destroy(evaluation); | |
298 | return ret; | |
299 | } | |
300 | ||
301 | enum lttng_condition_status | |
302 | lttng_condition_session_consumed_size_get_threshold( | |
303 | const struct lttng_condition *condition, | |
304 | uint64_t *consumed_threshold_bytes) | |
305 | { | |
306 | struct lttng_condition_session_consumed_size *consumed; | |
307 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
308 | ||
309 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || !consumed_threshold_bytes) { | |
310 | status = LTTNG_CONDITION_STATUS_INVALID; | |
311 | goto end; | |
312 | } | |
313 | ||
314 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
315 | parent); | |
316 | if (!consumed->consumed_threshold_bytes.set) { | |
317 | status = LTTNG_CONDITION_STATUS_UNSET; | |
318 | goto end; | |
319 | } | |
320 | *consumed_threshold_bytes = consumed->consumed_threshold_bytes.value; | |
321 | end: | |
322 | return status; | |
323 | } | |
324 | ||
325 | enum lttng_condition_status | |
326 | lttng_condition_session_consumed_size_set_threshold( | |
327 | struct lttng_condition *condition, uint64_t consumed_threshold_bytes) | |
328 | { | |
329 | struct lttng_condition_session_consumed_size *consumed; | |
330 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
331 | ||
332 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition)) { | |
333 | status = LTTNG_CONDITION_STATUS_INVALID; | |
334 | goto end; | |
335 | } | |
336 | ||
337 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
338 | parent); | |
339 | consumed->consumed_threshold_bytes.set = true; | |
340 | consumed->consumed_threshold_bytes.value = consumed_threshold_bytes; | |
341 | end: | |
342 | return status; | |
343 | } | |
344 | ||
345 | enum lttng_condition_status | |
346 | lttng_condition_session_consumed_size_get_session_name( | |
347 | const struct lttng_condition *condition, | |
348 | const char **session_name) | |
349 | { | |
350 | struct lttng_condition_session_consumed_size *consumed; | |
351 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
352 | ||
353 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || !session_name) { | |
354 | status = LTTNG_CONDITION_STATUS_INVALID; | |
355 | goto end; | |
356 | } | |
357 | ||
358 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
359 | parent); | |
360 | if (!consumed->session_name) { | |
361 | status = LTTNG_CONDITION_STATUS_UNSET; | |
362 | goto end; | |
363 | } | |
364 | *session_name = consumed->session_name; | |
365 | end: | |
366 | return status; | |
367 | } | |
368 | ||
369 | enum lttng_condition_status | |
370 | lttng_condition_session_consumed_size_set_session_name( | |
371 | struct lttng_condition *condition, const char *session_name) | |
372 | { | |
373 | char *session_name_copy; | |
374 | struct lttng_condition_session_consumed_size *consumed; | |
375 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
376 | ||
377 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || | |
378 | !session_name || strlen(session_name) == 0) { | |
379 | status = LTTNG_CONDITION_STATUS_INVALID; | |
380 | goto end; | |
381 | } | |
382 | ||
383 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
384 | parent); | |
385 | session_name_copy = strdup(session_name); | |
386 | if (!session_name_copy) { | |
387 | status = LTTNG_CONDITION_STATUS_ERROR; | |
388 | goto end; | |
389 | } | |
390 | ||
391 | if (consumed->session_name) { | |
392 | free(consumed->session_name); | |
393 | } | |
394 | consumed->session_name = session_name_copy; | |
395 | end: | |
396 | return status; | |
397 | } | |
398 | ||
399 | static | |
3647288f | 400 | int lttng_evaluation_session_consumed_size_serialize( |
9b63a4aa | 401 | const struct lttng_evaluation *evaluation, |
3647288f | 402 | struct lttng_dynamic_buffer *buf) |
e8360425 | 403 | { |
e8360425 | 404 | struct lttng_evaluation_session_consumed_size *consumed; |
3647288f | 405 | struct lttng_evaluation_session_consumed_size_comm comm; |
e8360425 JD |
406 | |
407 | consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size, | |
408 | parent); | |
3647288f JG |
409 | comm.session_consumed = consumed->session_consumed; |
410 | return lttng_dynamic_buffer_append(buf, &comm, sizeof(comm)); | |
e8360425 JD |
411 | } |
412 | ||
413 | static | |
414 | void lttng_evaluation_session_consumed_size_destroy( | |
415 | struct lttng_evaluation *evaluation) | |
416 | { | |
417 | struct lttng_evaluation_session_consumed_size *consumed; | |
418 | ||
419 | consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size, | |
420 | parent); | |
421 | free(consumed); | |
422 | } | |
423 | ||
424 | LTTNG_HIDDEN | |
425 | struct lttng_evaluation *lttng_evaluation_session_consumed_size_create( | |
5f2c1c0f | 426 | uint64_t consumed) |
e8360425 JD |
427 | { |
428 | struct lttng_evaluation_session_consumed_size *consumed_eval; | |
429 | ||
430 | consumed_eval = zmalloc(sizeof(struct lttng_evaluation_session_consumed_size)); | |
431 | if (!consumed_eval) { | |
432 | goto end; | |
433 | } | |
434 | ||
5f2c1c0f | 435 | consumed_eval->parent.type = LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE; |
e8360425 JD |
436 | consumed_eval->session_consumed = consumed; |
437 | consumed_eval->parent.serialize = lttng_evaluation_session_consumed_size_serialize; | |
438 | consumed_eval->parent.destroy = lttng_evaluation_session_consumed_size_destroy; | |
439 | end: | |
440 | return &consumed_eval->parent; | |
441 | } | |
442 | ||
443 | enum lttng_evaluation_status | |
444 | lttng_evaluation_session_consumed_size_get_consumed_size( | |
445 | const struct lttng_evaluation *evaluation, | |
446 | uint64_t *session_consumed) | |
447 | { | |
448 | struct lttng_evaluation_session_consumed_size *consumed; | |
449 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; | |
450 | ||
451 | if (!evaluation || !IS_CONSUMED_SIZE_EVALUATION(evaluation) || | |
452 | !session_consumed) { | |
453 | status = LTTNG_EVALUATION_STATUS_INVALID; | |
454 | goto end; | |
455 | } | |
456 | ||
457 | consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size, | |
458 | parent); | |
459 | *session_consumed = consumed->session_consumed; | |
460 | end: | |
461 | return status; | |
462 | } |