2 * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
4 * This library is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU Lesser General Public License, version 2.1 only,
6 * as published by the Free Software Foundation.
8 * This library is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this library; if not, write to the Free Software Foundation,
15 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 #include <lttng/condition/condition-internal.h>
19 #include <lttng/condition/session-consumed-size-internal.h>
20 #include <lttng/constant.h>
21 #include <common/macros.h>
22 #include <common/error.h>
28 #define IS_CONSUMED_SIZE_CONDITION(condition) ( \
29 lttng_condition_get_type(condition) == LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE \
32 #define IS_CONSUMED_SIZE_EVALUATION(evaluation) ( \
33 lttng_evaluation_get_type(evaluation) == LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE \
37 void lttng_condition_session_consumed_size_destroy(struct lttng_condition
*condition
)
39 struct lttng_condition_session_consumed_size
*consumed_size
;
41 consumed_size
= container_of(condition
,
42 struct lttng_condition_session_consumed_size
, parent
);
44 free(consumed_size
->session_name
);
49 bool lttng_condition_session_consumed_size_validate(
50 const struct lttng_condition
*condition
)
53 struct lttng_condition_session_consumed_size
*consumed
;
59 consumed
= container_of(condition
, struct lttng_condition_session_consumed_size
,
61 if (!consumed
->session_name
) {
62 ERR("Invalid buffer condition: a target session name must be set.");
65 if (!consumed
->consumed_threshold_bytes
.set
) {
66 ERR("Invalid session condition: a threshold must be set.");
76 ssize_t
lttng_condition_session_consumed_size_serialize(
77 const struct lttng_condition
*condition
, char *buf
)
79 struct lttng_condition_session_consumed_size
*consumed
;
81 size_t session_name_len
;
83 if (!condition
|| !IS_CONSUMED_SIZE_CONDITION(condition
)) {
88 DBG("Serializing session consumed condition");
89 consumed
= container_of(condition
, struct lttng_condition_session_consumed_size
,
91 size
= sizeof(struct lttng_condition_session_consumed_size_comm
);
92 session_name_len
= strlen(consumed
->session_name
) + 1;
93 if (session_name_len
> LTTNG_NAME_MAX
) {
97 size
+= session_name_len
;
99 struct lttng_condition_session_consumed_size_comm consumed_comm
= {
100 .consumed_threshold_bytes
= consumed
->consumed_threshold_bytes
.value
,
101 .session_name_len
= session_name_len
,
104 memcpy(buf
, &consumed_comm
, sizeof(consumed_comm
));
105 buf
+= sizeof(consumed_comm
);
106 memcpy(buf
, consumed
->session_name
, session_name_len
);
107 buf
+= session_name_len
;
115 bool lttng_condition_session_consumed_size_is_equal(const struct lttng_condition
*_a
,
116 const struct lttng_condition
*_b
)
118 bool is_equal
= false;
119 struct lttng_condition_session_consumed_size
*a
, *b
;
121 a
= container_of(_a
, struct lttng_condition_session_consumed_size
, parent
);
122 b
= container_of(_b
, struct lttng_condition_session_consumed_size
, parent
);
124 if (a
->consumed_threshold_bytes
.set
&& b
->consumed_threshold_bytes
.set
) {
125 uint64_t a_value
, b_value
;
127 a_value
= a
->consumed_threshold_bytes
.value
;
128 b_value
= b
->consumed_threshold_bytes
.value
;
129 if (a_value
!= b_value
) {
134 if ((a
->session_name
&& !b
->session_name
) ||
135 (!a
->session_name
&& b
->session_name
)) {
144 struct lttng_condition
*lttng_condition_session_consumed_size_create(void)
146 struct lttng_condition_session_consumed_size
*condition
;
148 condition
= zmalloc(sizeof(struct lttng_condition_session_consumed_size
));
153 lttng_condition_init(&condition
->parent
, LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE
);
154 condition
->parent
.validate
= lttng_condition_session_consumed_size_validate
;
155 condition
->parent
.serialize
= lttng_condition_session_consumed_size_serialize
;
156 condition
->parent
.equal
= lttng_condition_session_consumed_size_is_equal
;
157 condition
->parent
.destroy
= lttng_condition_session_consumed_size_destroy
;
158 return &condition
->parent
;
162 ssize_t
init_condition_from_buffer(struct lttng_condition
*condition
,
163 const struct lttng_buffer_view
*src_view
)
165 ssize_t ret
, condition_size
;
166 enum lttng_condition_status status
;
167 const struct lttng_condition_session_consumed_size_comm
*condition_comm
;
168 const char *session_name
;
169 struct lttng_buffer_view names_view
;
171 if (src_view
->size
< sizeof(*condition_comm
)) {
172 ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header");
177 condition_comm
= (const struct lttng_condition_session_consumed_size_comm
*) src_view
->data
;
178 names_view
= lttng_buffer_view_from_view(src_view
,
179 sizeof(*condition_comm
), -1);
181 if (condition_comm
->session_name_len
> LTTNG_NAME_MAX
) {
182 ERR("Failed to initialize from malformed condition buffer: name exceeds LTTNG_MAX_NAME");
187 if (names_view
.size
< condition_comm
->session_name_len
) {
188 ERR("Failed to initialize from malformed condition buffer: buffer too short to contain element names");
193 status
= lttng_condition_session_consumed_size_set_threshold(condition
,
194 condition_comm
->consumed_threshold_bytes
);
195 if (status
!= LTTNG_CONDITION_STATUS_OK
) {
196 ERR("Failed to initialize session consumed condition threshold");
201 session_name
= names_view
.data
;
202 if (*(session_name
+ condition_comm
->session_name_len
- 1) != '\0') {
203 ERR("Malformed session name encountered in condition buffer");
208 status
= lttng_condition_session_consumed_size_set_session_name(condition
,
210 if (status
!= LTTNG_CONDITION_STATUS_OK
) {
211 ERR("Failed to set buffer consumed session name");
216 if (!lttng_condition_validate(condition
)) {
221 condition_size
= sizeof(*condition_comm
) +
222 (ssize_t
) condition_comm
->session_name_len
;
223 ret
= condition_size
;
229 ssize_t
lttng_condition_session_consumed_size_create_from_buffer(
230 const struct lttng_buffer_view
*view
,
231 struct lttng_condition
**_condition
)
234 struct lttng_condition
*condition
=
235 lttng_condition_session_consumed_size_create();
237 if (!_condition
|| !condition
) {
242 ret
= init_condition_from_buffer(condition
, view
);
247 *_condition
= condition
;
250 lttng_condition_destroy(condition
);
255 struct lttng_evaluation
*create_evaluation_from_buffer(
256 enum lttng_condition_type type
,
257 const struct lttng_buffer_view
*view
)
259 const struct lttng_evaluation_session_consumed_size_comm
*comm
=
260 (const struct lttng_evaluation_session_consumed_size_comm
*) view
->data
;
261 struct lttng_evaluation
*evaluation
= NULL
;
263 if (view
->size
< sizeof(*comm
)) {
267 evaluation
= lttng_evaluation_session_consumed_size_create(type
,
268 comm
->session_consumed
);
274 ssize_t
lttng_evaluation_session_consumed_size_create_from_buffer(
275 const struct lttng_buffer_view
*view
,
276 struct lttng_evaluation
**_evaluation
)
279 struct lttng_evaluation
*evaluation
= NULL
;
286 evaluation
= create_evaluation_from_buffer(
287 LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE
, view
);
293 *_evaluation
= evaluation
;
294 ret
= sizeof(struct lttng_evaluation_session_consumed_size_comm
);
297 lttng_evaluation_destroy(evaluation
);
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
)
306 struct lttng_condition_session_consumed_size
*consumed
;
307 enum lttng_condition_status status
= LTTNG_CONDITION_STATUS_OK
;
309 if (!condition
|| !IS_CONSUMED_SIZE_CONDITION(condition
) || !consumed_threshold_bytes
) {
310 status
= LTTNG_CONDITION_STATUS_INVALID
;
314 consumed
= container_of(condition
, struct lttng_condition_session_consumed_size
,
316 if (!consumed
->consumed_threshold_bytes
.set
) {
317 status
= LTTNG_CONDITION_STATUS_UNSET
;
320 *consumed_threshold_bytes
= consumed
->consumed_threshold_bytes
.value
;
325 enum lttng_condition_status
326 lttng_condition_session_consumed_size_set_threshold(
327 struct lttng_condition
*condition
, uint64_t consumed_threshold_bytes
)
329 struct lttng_condition_session_consumed_size
*consumed
;
330 enum lttng_condition_status status
= LTTNG_CONDITION_STATUS_OK
;
332 if (!condition
|| !IS_CONSUMED_SIZE_CONDITION(condition
)) {
333 status
= LTTNG_CONDITION_STATUS_INVALID
;
337 consumed
= container_of(condition
, struct lttng_condition_session_consumed_size
,
339 consumed
->consumed_threshold_bytes
.set
= true;
340 consumed
->consumed_threshold_bytes
.value
= consumed_threshold_bytes
;
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
)
350 struct lttng_condition_session_consumed_size
*consumed
;
351 enum lttng_condition_status status
= LTTNG_CONDITION_STATUS_OK
;
353 if (!condition
|| !IS_CONSUMED_SIZE_CONDITION(condition
) || !session_name
) {
354 status
= LTTNG_CONDITION_STATUS_INVALID
;
358 consumed
= container_of(condition
, struct lttng_condition_session_consumed_size
,
360 if (!consumed
->session_name
) {
361 status
= LTTNG_CONDITION_STATUS_UNSET
;
364 *session_name
= consumed
->session_name
;
369 enum lttng_condition_status
370 lttng_condition_session_consumed_size_set_session_name(
371 struct lttng_condition
*condition
, const char *session_name
)
373 char *session_name_copy
;
374 struct lttng_condition_session_consumed_size
*consumed
;
375 enum lttng_condition_status status
= LTTNG_CONDITION_STATUS_OK
;
377 if (!condition
|| !IS_CONSUMED_SIZE_CONDITION(condition
) ||
378 !session_name
|| strlen(session_name
) == 0) {
379 status
= LTTNG_CONDITION_STATUS_INVALID
;
383 consumed
= container_of(condition
, struct lttng_condition_session_consumed_size
,
385 session_name_copy
= strdup(session_name
);
386 if (!session_name_copy
) {
387 status
= LTTNG_CONDITION_STATUS_ERROR
;
391 if (consumed
->session_name
) {
392 free(consumed
->session_name
);
394 consumed
->session_name
= session_name_copy
;
400 ssize_t
lttng_evaluation_session_consumed_size_serialize(
401 struct lttng_evaluation
*evaluation
, char *buf
)
404 struct lttng_evaluation_session_consumed_size
*consumed
;
406 consumed
= container_of(evaluation
, struct lttng_evaluation_session_consumed_size
,
409 struct lttng_evaluation_session_consumed_size_comm comm
= {
410 .session_consumed
= consumed
->session_consumed
,
413 memcpy(buf
, &comm
, sizeof(comm
));
416 ret
= sizeof(struct lttng_evaluation_session_consumed_size_comm
);
421 void lttng_evaluation_session_consumed_size_destroy(
422 struct lttng_evaluation
*evaluation
)
424 struct lttng_evaluation_session_consumed_size
*consumed
;
426 consumed
= container_of(evaluation
, struct lttng_evaluation_session_consumed_size
,
432 struct lttng_evaluation
*lttng_evaluation_session_consumed_size_create(
433 enum lttng_condition_type type
, uint64_t consumed
)
435 struct lttng_evaluation_session_consumed_size
*consumed_eval
;
437 consumed_eval
= zmalloc(sizeof(struct lttng_evaluation_session_consumed_size
));
438 if (!consumed_eval
) {
442 consumed_eval
->parent
.type
= type
;
443 consumed_eval
->session_consumed
= consumed
;
444 consumed_eval
->parent
.serialize
= lttng_evaluation_session_consumed_size_serialize
;
445 consumed_eval
->parent
.destroy
= lttng_evaluation_session_consumed_size_destroy
;
447 return &consumed_eval
->parent
;
450 enum lttng_evaluation_status
451 lttng_evaluation_session_consumed_size_get_consumed_size(
452 const struct lttng_evaluation
*evaluation
,
453 uint64_t *session_consumed
)
455 struct lttng_evaluation_session_consumed_size
*consumed
;
456 enum lttng_evaluation_status status
= LTTNG_EVALUATION_STATUS_OK
;
458 if (!evaluation
|| !IS_CONSUMED_SIZE_EVALUATION(evaluation
) ||
460 status
= LTTNG_EVALUATION_STATUS_INVALID
;
464 consumed
= container_of(evaluation
, struct lttng_evaluation_session_consumed_size
,
466 *session_consumed
= consumed
->session_consumed
;