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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; | |
e8360425 | 164 | const char *session_name; |
3e6e0df2 JG |
165 | struct lttng_buffer_view session_name_view; |
166 | const struct lttng_condition_session_consumed_size_comm *condition_comm; | |
167 | struct lttng_payload_view condition_comm_view = lttng_payload_view_from_view( | |
168 | src_view, 0, sizeof(*condition_comm)); | |
e8360425 | 169 | |
3e6e0df2 | 170 | if (!lttng_payload_view_is_valid(&condition_comm_view)) { |
e8360425 JD |
171 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header"); |
172 | ret = -1; | |
173 | goto end; | |
174 | } | |
175 | ||
3e6e0df2 JG |
176 | condition_comm = (typeof(condition_comm)) condition_comm_view.buffer.data; |
177 | session_name_view = lttng_buffer_view_from_view(&src_view->buffer, | |
178 | sizeof(*condition_comm), condition_comm->session_name_len); | |
e8360425 JD |
179 | |
180 | if (condition_comm->session_name_len > LTTNG_NAME_MAX) { | |
181 | ERR("Failed to initialize from malformed condition buffer: name exceeds LTTNG_MAX_NAME"); | |
182 | ret = -1; | |
183 | goto end; | |
184 | } | |
185 | ||
3e6e0df2 | 186 | if (!lttng_buffer_view_is_valid(&session_name_view)) { |
e8360425 JD |
187 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain element names"); |
188 | ret = -1; | |
189 | goto end; | |
190 | } | |
191 | ||
192 | status = lttng_condition_session_consumed_size_set_threshold(condition, | |
193 | condition_comm->consumed_threshold_bytes); | |
194 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
9ef5b6be | 195 | ERR("Failed to initialize session consumed size condition threshold"); |
e8360425 JD |
196 | ret = -1; |
197 | goto end; | |
198 | } | |
199 | ||
3e6e0df2 | 200 | session_name = session_name_view.data; |
e8360425 JD |
201 | if (*(session_name + condition_comm->session_name_len - 1) != '\0') { |
202 | ERR("Malformed session name encountered in condition buffer"); | |
203 | ret = -1; | |
204 | goto end; | |
205 | } | |
206 | ||
207 | status = lttng_condition_session_consumed_size_set_session_name(condition, | |
208 | session_name); | |
209 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
9ef5b6be | 210 | ERR("Failed to set session consumed size condition's session name"); |
e8360425 JD |
211 | ret = -1; |
212 | goto end; | |
213 | } | |
214 | ||
215 | if (!lttng_condition_validate(condition)) { | |
216 | ret = -1; | |
217 | goto end; | |
218 | } | |
219 | ||
220 | condition_size = sizeof(*condition_comm) + | |
221 | (ssize_t) condition_comm->session_name_len; | |
222 | ret = condition_size; | |
223 | end: | |
224 | return ret; | |
225 | } | |
226 | ||
227 | LTTNG_HIDDEN | |
c0a66c84 JG |
228 | ssize_t lttng_condition_session_consumed_size_create_from_payload( |
229 | struct lttng_payload_view *view, | |
e8360425 JD |
230 | struct lttng_condition **_condition) |
231 | { | |
232 | ssize_t ret; | |
233 | struct lttng_condition *condition = | |
234 | lttng_condition_session_consumed_size_create(); | |
235 | ||
236 | if (!_condition || !condition) { | |
237 | ret = -1; | |
238 | goto error; | |
239 | } | |
240 | ||
c0a66c84 | 241 | ret = init_condition_from_payload(condition, view); |
e8360425 JD |
242 | if (ret < 0) { |
243 | goto error; | |
244 | } | |
245 | ||
246 | *_condition = condition; | |
247 | return ret; | |
248 | error: | |
249 | lttng_condition_destroy(condition); | |
250 | return ret; | |
251 | } | |
252 | ||
253 | static | |
c0a66c84 JG |
254 | struct lttng_evaluation *create_evaluation_from_payload( |
255 | const struct lttng_payload_view *view) | |
e8360425 JD |
256 | { |
257 | const struct lttng_evaluation_session_consumed_size_comm *comm = | |
c0a66c84 | 258 | (typeof(comm)) view->buffer.data; |
e8360425 JD |
259 | struct lttng_evaluation *evaluation = NULL; |
260 | ||
c0a66c84 | 261 | if (view->buffer.size < sizeof(*comm)) { |
e8360425 JD |
262 | goto end; |
263 | } | |
264 | ||
5f2c1c0f | 265 | evaluation = lttng_evaluation_session_consumed_size_create( |
e8360425 JD |
266 | comm->session_consumed); |
267 | end: | |
268 | return evaluation; | |
269 | } | |
270 | ||
271 | LTTNG_HIDDEN | |
c0a66c84 JG |
272 | ssize_t lttng_evaluation_session_consumed_size_create_from_payload( |
273 | struct lttng_payload_view *view, | |
e8360425 JD |
274 | struct lttng_evaluation **_evaluation) |
275 | { | |
276 | ssize_t ret; | |
277 | struct lttng_evaluation *evaluation = NULL; | |
278 | ||
279 | if (!_evaluation) { | |
280 | ret = -1; | |
281 | goto error; | |
282 | } | |
283 | ||
c0a66c84 | 284 | evaluation = create_evaluation_from_payload(view); |
e8360425 JD |
285 | if (!evaluation) { |
286 | ret = -1; | |
287 | goto error; | |
288 | } | |
289 | ||
290 | *_evaluation = evaluation; | |
291 | ret = sizeof(struct lttng_evaluation_session_consumed_size_comm); | |
292 | return ret; | |
293 | error: | |
294 | lttng_evaluation_destroy(evaluation); | |
295 | return ret; | |
296 | } | |
297 | ||
298 | enum lttng_condition_status | |
299 | lttng_condition_session_consumed_size_get_threshold( | |
300 | const struct lttng_condition *condition, | |
301 | uint64_t *consumed_threshold_bytes) | |
302 | { | |
303 | struct lttng_condition_session_consumed_size *consumed; | |
304 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
305 | ||
306 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || !consumed_threshold_bytes) { | |
307 | status = LTTNG_CONDITION_STATUS_INVALID; | |
308 | goto end; | |
309 | } | |
310 | ||
311 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
312 | parent); | |
313 | if (!consumed->consumed_threshold_bytes.set) { | |
314 | status = LTTNG_CONDITION_STATUS_UNSET; | |
315 | goto end; | |
316 | } | |
317 | *consumed_threshold_bytes = consumed->consumed_threshold_bytes.value; | |
318 | end: | |
319 | return status; | |
320 | } | |
321 | ||
322 | enum lttng_condition_status | |
323 | lttng_condition_session_consumed_size_set_threshold( | |
324 | struct lttng_condition *condition, uint64_t consumed_threshold_bytes) | |
325 | { | |
326 | struct lttng_condition_session_consumed_size *consumed; | |
327 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
328 | ||
329 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition)) { | |
330 | status = LTTNG_CONDITION_STATUS_INVALID; | |
331 | goto end; | |
332 | } | |
333 | ||
334 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
335 | parent); | |
336 | consumed->consumed_threshold_bytes.set = true; | |
337 | consumed->consumed_threshold_bytes.value = consumed_threshold_bytes; | |
338 | end: | |
339 | return status; | |
340 | } | |
341 | ||
342 | enum lttng_condition_status | |
343 | lttng_condition_session_consumed_size_get_session_name( | |
344 | const struct lttng_condition *condition, | |
345 | const char **session_name) | |
346 | { | |
347 | struct lttng_condition_session_consumed_size *consumed; | |
348 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
349 | ||
350 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || !session_name) { | |
351 | status = LTTNG_CONDITION_STATUS_INVALID; | |
352 | goto end; | |
353 | } | |
354 | ||
355 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
356 | parent); | |
357 | if (!consumed->session_name) { | |
358 | status = LTTNG_CONDITION_STATUS_UNSET; | |
359 | goto end; | |
360 | } | |
361 | *session_name = consumed->session_name; | |
362 | end: | |
363 | return status; | |
364 | } | |
365 | ||
366 | enum lttng_condition_status | |
367 | lttng_condition_session_consumed_size_set_session_name( | |
368 | struct lttng_condition *condition, const char *session_name) | |
369 | { | |
370 | char *session_name_copy; | |
371 | struct lttng_condition_session_consumed_size *consumed; | |
372 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
373 | ||
374 | if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || | |
375 | !session_name || strlen(session_name) == 0) { | |
376 | status = LTTNG_CONDITION_STATUS_INVALID; | |
377 | goto end; | |
378 | } | |
379 | ||
380 | consumed = container_of(condition, struct lttng_condition_session_consumed_size, | |
381 | parent); | |
382 | session_name_copy = strdup(session_name); | |
383 | if (!session_name_copy) { | |
384 | status = LTTNG_CONDITION_STATUS_ERROR; | |
385 | goto end; | |
386 | } | |
387 | ||
388 | if (consumed->session_name) { | |
389 | free(consumed->session_name); | |
390 | } | |
391 | consumed->session_name = session_name_copy; | |
392 | end: | |
393 | return status; | |
394 | } | |
395 | ||
396 | static | |
3647288f | 397 | int lttng_evaluation_session_consumed_size_serialize( |
9b63a4aa | 398 | const struct lttng_evaluation *evaluation, |
c0a66c84 | 399 | struct lttng_payload *payload) |
e8360425 | 400 | { |
e8360425 | 401 | struct lttng_evaluation_session_consumed_size *consumed; |
3647288f | 402 | struct lttng_evaluation_session_consumed_size_comm comm; |
e8360425 | 403 | |
c0a66c84 JG |
404 | consumed = container_of(evaluation, |
405 | struct lttng_evaluation_session_consumed_size, parent); | |
3647288f | 406 | comm.session_consumed = consumed->session_consumed; |
c0a66c84 JG |
407 | return lttng_dynamic_buffer_append( |
408 | &payload->buffer, &comm, sizeof(comm)); | |
e8360425 JD |
409 | } |
410 | ||
411 | static | |
412 | void lttng_evaluation_session_consumed_size_destroy( | |
413 | struct lttng_evaluation *evaluation) | |
414 | { | |
415 | struct lttng_evaluation_session_consumed_size *consumed; | |
416 | ||
417 | consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size, | |
418 | parent); | |
419 | free(consumed); | |
420 | } | |
421 | ||
422 | LTTNG_HIDDEN | |
423 | struct lttng_evaluation *lttng_evaluation_session_consumed_size_create( | |
5f2c1c0f | 424 | uint64_t consumed) |
e8360425 JD |
425 | { |
426 | struct lttng_evaluation_session_consumed_size *consumed_eval; | |
427 | ||
428 | consumed_eval = zmalloc(sizeof(struct lttng_evaluation_session_consumed_size)); | |
429 | if (!consumed_eval) { | |
430 | goto end; | |
431 | } | |
432 | ||
5f2c1c0f | 433 | consumed_eval->parent.type = LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE; |
e8360425 JD |
434 | consumed_eval->session_consumed = consumed; |
435 | consumed_eval->parent.serialize = lttng_evaluation_session_consumed_size_serialize; | |
436 | consumed_eval->parent.destroy = lttng_evaluation_session_consumed_size_destroy; | |
437 | end: | |
438 | return &consumed_eval->parent; | |
439 | } | |
440 | ||
441 | enum lttng_evaluation_status | |
442 | lttng_evaluation_session_consumed_size_get_consumed_size( | |
443 | const struct lttng_evaluation *evaluation, | |
444 | uint64_t *session_consumed) | |
445 | { | |
446 | struct lttng_evaluation_session_consumed_size *consumed; | |
447 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; | |
448 | ||
449 | if (!evaluation || !IS_CONSUMED_SIZE_EVALUATION(evaluation) || | |
450 | !session_consumed) { | |
451 | status = LTTNG_EVALUATION_STATUS_INVALID; | |
452 | goto end; | |
453 | } | |
454 | ||
455 | consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size, | |
456 | parent); | |
457 | *session_consumed = consumed->session_consumed; | |
458 | end: | |
459 | return status; | |
460 | } |