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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, | |
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 | ||
821d5e92 JG |
130 | assert(a->session_name); |
131 | assert(b->session_name); | |
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 | ||
141 | struct lttng_condition *lttng_condition_session_consumed_size_create(void) | |
142 | { | |
143 | struct lttng_condition_session_consumed_size *condition; | |
144 | ||
145 | condition = zmalloc(sizeof(struct lttng_condition_session_consumed_size)); | |
146 | if (!condition) { | |
147 | return NULL; | |
148 | } | |
149 | ||
150 | lttng_condition_init(&condition->parent, LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE); | |
151 | condition->parent.validate = lttng_condition_session_consumed_size_validate; | |
152 | condition->parent.serialize = lttng_condition_session_consumed_size_serialize; | |
153 | condition->parent.equal = lttng_condition_session_consumed_size_is_equal; | |
154 | condition->parent.destroy = lttng_condition_session_consumed_size_destroy; | |
155 | return &condition->parent; | |
156 | } | |
157 | ||
158 | static | |
c0a66c84 JG |
159 | ssize_t init_condition_from_payload(struct lttng_condition *condition, |
160 | struct lttng_payload_view *src_view) | |
e8360425 JD |
161 | { |
162 | ssize_t ret, condition_size; | |
163 | enum lttng_condition_status status; | |
164 | const struct lttng_condition_session_consumed_size_comm *condition_comm; | |
165 | const char *session_name; | |
166 | struct lttng_buffer_view names_view; | |
167 | ||
c0a66c84 | 168 | if (src_view->buffer.size < sizeof(*condition_comm)) { |
e8360425 JD |
169 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header"); |
170 | ret = -1; | |
171 | goto end; | |
172 | } | |
173 | ||
c0a66c84 JG |
174 | condition_comm = (typeof(condition_comm)) src_view->buffer.data; |
175 | names_view = lttng_buffer_view_from_view(&src_view->buffer, | |
e8360425 JD |
176 | sizeof(*condition_comm), -1); |
177 | ||
178 | if (condition_comm->session_name_len > LTTNG_NAME_MAX) { | |
179 | ERR("Failed to initialize from malformed condition buffer: name exceeds LTTNG_MAX_NAME"); | |
180 | ret = -1; | |
181 | goto end; | |
182 | } | |
183 | ||
184 | if (names_view.size < condition_comm->session_name_len) { | |
185 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain element names"); | |
186 | ret = -1; | |
187 | goto end; | |
188 | } | |
189 | ||
190 | status = lttng_condition_session_consumed_size_set_threshold(condition, | |
191 | condition_comm->consumed_threshold_bytes); | |
192 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
9ef5b6be | 193 | ERR("Failed to initialize session consumed size condition threshold"); |
e8360425 JD |
194 | ret = -1; |
195 | goto end; | |
196 | } | |
197 | ||
198 | session_name = names_view.data; | |
199 | if (*(session_name + condition_comm->session_name_len - 1) != '\0') { | |
200 | ERR("Malformed session name encountered in condition buffer"); | |
201 | ret = -1; | |
202 | goto end; | |
203 | } | |
204 | ||
205 | status = lttng_condition_session_consumed_size_set_session_name(condition, | |
206 | session_name); | |
207 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
9ef5b6be | 208 | ERR("Failed to set session consumed size condition's session name"); |
e8360425 JD |
209 | ret = -1; |
210 | goto end; | |
211 | } | |
212 | ||
213 | if (!lttng_condition_validate(condition)) { | |
214 | ret = -1; | |
215 | goto end; | |
216 | } | |
217 | ||
218 | condition_size = sizeof(*condition_comm) + | |
219 | (ssize_t) condition_comm->session_name_len; | |
220 | ret = condition_size; | |
221 | end: | |
222 | return ret; | |
223 | } | |
224 | ||
225 | LTTNG_HIDDEN | |
c0a66c84 JG |
226 | ssize_t lttng_condition_session_consumed_size_create_from_payload( |
227 | struct lttng_payload_view *view, | |
e8360425 JD |
228 | struct lttng_condition **_condition) |
229 | { | |
230 | ssize_t ret; | |
231 | struct lttng_condition *condition = | |
232 | lttng_condition_session_consumed_size_create(); | |
233 | ||
234 | if (!_condition || !condition) { | |
235 | ret = -1; | |
236 | goto error; | |
237 | } | |
238 | ||
c0a66c84 | 239 | ret = init_condition_from_payload(condition, view); |
e8360425 JD |
240 | if (ret < 0) { |
241 | goto error; | |
242 | } | |
243 | ||
244 | *_condition = condition; | |
245 | return ret; | |
246 | error: | |
247 | lttng_condition_destroy(condition); | |
248 | return ret; | |
249 | } | |
250 | ||
251 | static | |
c0a66c84 JG |
252 | struct lttng_evaluation *create_evaluation_from_payload( |
253 | const struct lttng_payload_view *view) | |
e8360425 JD |
254 | { |
255 | const struct lttng_evaluation_session_consumed_size_comm *comm = | |
c0a66c84 | 256 | (typeof(comm)) view->buffer.data; |
e8360425 JD |
257 | struct lttng_evaluation *evaluation = NULL; |
258 | ||
c0a66c84 | 259 | if (view->buffer.size < sizeof(*comm)) { |
e8360425 JD |
260 | goto end; |
261 | } | |
262 | ||
5f2c1c0f | 263 | evaluation = lttng_evaluation_session_consumed_size_create( |
e8360425 JD |
264 | comm->session_consumed); |
265 | end: | |
266 | return evaluation; | |
267 | } | |
268 | ||
269 | LTTNG_HIDDEN | |
c0a66c84 JG |
270 | ssize_t lttng_evaluation_session_consumed_size_create_from_payload( |
271 | struct lttng_payload_view *view, | |
e8360425 JD |
272 | struct lttng_evaluation **_evaluation) |
273 | { | |
274 | ssize_t ret; | |
275 | struct lttng_evaluation *evaluation = NULL; | |
276 | ||
277 | if (!_evaluation) { | |
278 | ret = -1; | |
279 | goto error; | |
280 | } | |
281 | ||
c0a66c84 | 282 | evaluation = create_evaluation_from_payload(view); |
e8360425 JD |
283 | if (!evaluation) { |
284 | ret = -1; | |
285 | goto error; | |
286 | } | |
287 | ||
288 | *_evaluation = evaluation; | |
289 | ret = sizeof(struct lttng_evaluation_session_consumed_size_comm); | |
290 | return ret; | |
291 | error: | |
292 | lttng_evaluation_destroy(evaluation); | |
293 | return ret; | |
294 | } | |
295 | ||
296 | enum lttng_condition_status | |
297 | lttng_condition_session_consumed_size_get_threshold( | |
298 | const struct lttng_condition *condition, | |
299 | uint64_t *consumed_threshold_bytes) | |
300 | { | |
301 | struct lttng_condition_session_consumed_size *consumed; | |
302 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
303 | ||
304 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || !consumed_threshold_bytes) { | |
305 | status = LTTNG_CONDITION_STATUS_INVALID; | |
306 | goto end; | |
307 | } | |
308 | ||
309 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
310 | parent); | |
311 | if (!consumed->consumed_threshold_bytes.set) { | |
312 | status = LTTNG_CONDITION_STATUS_UNSET; | |
313 | goto end; | |
314 | } | |
315 | *consumed_threshold_bytes = consumed->consumed_threshold_bytes.value; | |
316 | end: | |
317 | return status; | |
318 | } | |
319 | ||
320 | enum lttng_condition_status | |
321 | lttng_condition_session_consumed_size_set_threshold( | |
322 | struct lttng_condition *condition, uint64_t consumed_threshold_bytes) | |
323 | { | |
324 | struct lttng_condition_session_consumed_size *consumed; | |
325 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
326 | ||
327 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition)) { | |
328 | status = LTTNG_CONDITION_STATUS_INVALID; | |
329 | goto end; | |
330 | } | |
331 | ||
332 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
333 | parent); | |
334 | consumed->consumed_threshold_bytes.set = true; | |
335 | consumed->consumed_threshold_bytes.value = consumed_threshold_bytes; | |
336 | end: | |
337 | return status; | |
338 | } | |
339 | ||
340 | enum lttng_condition_status | |
341 | lttng_condition_session_consumed_size_get_session_name( | |
342 | const struct lttng_condition *condition, | |
343 | const char **session_name) | |
344 | { | |
345 | struct lttng_condition_session_consumed_size *consumed; | |
346 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
347 | ||
348 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || !session_name) { | |
349 | status = LTTNG_CONDITION_STATUS_INVALID; | |
350 | goto end; | |
351 | } | |
352 | ||
353 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
354 | parent); | |
355 | if (!consumed->session_name) { | |
356 | status = LTTNG_CONDITION_STATUS_UNSET; | |
357 | goto end; | |
358 | } | |
359 | *session_name = consumed->session_name; | |
360 | end: | |
361 | return status; | |
362 | } | |
363 | ||
364 | enum lttng_condition_status | |
365 | lttng_condition_session_consumed_size_set_session_name( | |
366 | struct lttng_condition *condition, const char *session_name) | |
367 | { | |
368 | char *session_name_copy; | |
369 | struct lttng_condition_session_consumed_size *consumed; | |
370 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
371 | ||
372 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || | |
373 | !session_name || strlen(session_name) == 0) { | |
374 | status = LTTNG_CONDITION_STATUS_INVALID; | |
375 | goto end; | |
376 | } | |
377 | ||
378 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
379 | parent); | |
380 | session_name_copy = strdup(session_name); | |
381 | if (!session_name_copy) { | |
382 | status = LTTNG_CONDITION_STATUS_ERROR; | |
383 | goto end; | |
384 | } | |
385 | ||
386 | if (consumed->session_name) { | |
387 | free(consumed->session_name); | |
388 | } | |
389 | consumed->session_name = session_name_copy; | |
390 | end: | |
391 | return status; | |
392 | } | |
393 | ||
394 | static | |
3647288f | 395 | int lttng_evaluation_session_consumed_size_serialize( |
9b63a4aa | 396 | const struct lttng_evaluation *evaluation, |
c0a66c84 | 397 | struct lttng_payload *payload) |
e8360425 | 398 | { |
e8360425 | 399 | struct lttng_evaluation_session_consumed_size *consumed; |
3647288f | 400 | struct lttng_evaluation_session_consumed_size_comm comm; |
e8360425 | 401 | |
c0a66c84 JG |
402 | consumed = container_of(evaluation, |
403 | struct lttng_evaluation_session_consumed_size, parent); | |
3647288f | 404 | comm.session_consumed = consumed->session_consumed; |
c0a66c84 JG |
405 | return lttng_dynamic_buffer_append( |
406 | &payload->buffer, &comm, sizeof(comm)); | |
e8360425 JD |
407 | } |
408 | ||
409 | static | |
410 | void lttng_evaluation_session_consumed_size_destroy( | |
411 | struct lttng_evaluation *evaluation) | |
412 | { | |
413 | struct lttng_evaluation_session_consumed_size *consumed; | |
414 | ||
415 | consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size, | |
416 | parent); | |
417 | free(consumed); | |
418 | } | |
419 | ||
420 | LTTNG_HIDDEN | |
421 | struct lttng_evaluation *lttng_evaluation_session_consumed_size_create( | |
5f2c1c0f | 422 | uint64_t consumed) |
e8360425 JD |
423 | { |
424 | struct lttng_evaluation_session_consumed_size *consumed_eval; | |
425 | ||
426 | consumed_eval = zmalloc(sizeof(struct lttng_evaluation_session_consumed_size)); | |
427 | if (!consumed_eval) { | |
428 | goto end; | |
429 | } | |
430 | ||
5f2c1c0f | 431 | consumed_eval->parent.type = LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE; |
e8360425 JD |
432 | consumed_eval->session_consumed = consumed; |
433 | consumed_eval->parent.serialize = lttng_evaluation_session_consumed_size_serialize; | |
434 | consumed_eval->parent.destroy = lttng_evaluation_session_consumed_size_destroy; | |
435 | end: | |
436 | return &consumed_eval->parent; | |
437 | } | |
438 | ||
439 | enum lttng_evaluation_status | |
440 | lttng_evaluation_session_consumed_size_get_consumed_size( | |
441 | const struct lttng_evaluation *evaluation, | |
442 | uint64_t *session_consumed) | |
443 | { | |
444 | struct lttng_evaluation_session_consumed_size *consumed; | |
445 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; | |
446 | ||
447 | if (!evaluation || !IS_CONSUMED_SIZE_EVALUATION(evaluation) || | |
448 | !session_consumed) { | |
449 | status = LTTNG_EVALUATION_STATUS_INVALID; | |
450 | goto end; | |
451 | } | |
452 | ||
453 | consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size, | |
454 | parent); | |
455 | *session_consumed = consumed->session_consumed; | |
456 | end: | |
457 | return status; | |
458 | } |