Commit | Line | Data |
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862ca4ed | 1 | /* |
e2f7325d | 2 | * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com> |
862ca4ed PP |
3 | * Copyright 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
4 | * | |
862ca4ed PP |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
6 | * of this software and associated documentation files (the "Software"), to deal | |
7 | * in the Software without restriction, including without limitation the rights | |
8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
9 | * copies of the Software, and to permit persons to whom the Software is | |
10 | * furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
21 | * SOFTWARE. | |
22 | */ | |
23 | ||
350ad6c1 | 24 | #define BT_LOG_TAG "LIB/TRACE" |
c2d9d9cf | 25 | #include "lib/logging.h" |
862ca4ed | 26 | |
578e048b | 27 | #include "lib/assert-pre.h" |
3fadfbc0 MJ |
28 | #include <babeltrace2/trace-ir/trace-class.h> |
29 | #include <babeltrace2/trace-ir/trace-class-const.h> | |
3fadfbc0 | 30 | #include <babeltrace2/trace-ir/event-class.h> |
578e048b MJ |
31 | #include "ctf-writer/functor.h" |
32 | #include "ctf-writer/clock.h" | |
33 | #include "compat/compiler.h" | |
3fadfbc0 MJ |
34 | #include <babeltrace2/value.h> |
35 | #include <babeltrace2/value-const.h> | |
578e048b | 36 | #include "lib/value.h" |
3fadfbc0 | 37 | #include <babeltrace2/types.h> |
578e048b MJ |
38 | #include "compat/endian.h" |
39 | #include "common/assert.h" | |
40 | #include "compat/glib.h" | |
862ca4ed PP |
41 | #include <inttypes.h> |
42 | #include <stdint.h> | |
43 | #include <string.h> | |
44 | #include <stdlib.h> | |
45 | ||
578e048b MJ |
46 | #include "attributes.h" |
47 | #include "clock-class.h" | |
48 | #include "event-class.h" | |
49 | #include "event.h" | |
50 | #include "field-class.h" | |
51 | #include "field-wrapper.h" | |
52 | #include "resolve-field-path.h" | |
53 | #include "stream-class.h" | |
54 | #include "stream.h" | |
55 | #include "trace.h" | |
56 | #include "utils.h" | |
d24d5663 | 57 | #include "lib/func-status.h" |
578e048b | 58 | |
ad5268b5 FD |
59 | struct bt_trace_class_destruction_listener_elem { |
60 | bt_trace_class_destruction_listener_func func; | |
61 | void *data; | |
62 | }; | |
63 | ||
862ca4ed PP |
64 | #define BT_ASSERT_PRE_TRACE_CLASS_HOT(_tc) \ |
65 | BT_ASSERT_PRE_HOT((_tc), "Trace class", ": %!+T", (_tc)) | |
66 | ||
67 | static | |
68 | void destroy_trace_class(struct bt_object *obj) | |
69 | { | |
70 | struct bt_trace_class *tc = (void *) obj; | |
71 | ||
72 | BT_LIB_LOGD("Destroying trace class object: %!+T", tc); | |
ad5268b5 FD |
73 | /* |
74 | * Call destruction listener functions so that everything else | |
75 | * still exists in the trace class. | |
76 | */ | |
77 | if (tc->destruction_listeners) { | |
78 | uint64_t i; | |
3f7d4d90 | 79 | BT_LIB_LOGD("Calling trace class destruction listener(s): %!+T", tc); |
c47a6bec SM |
80 | |
81 | /* | |
82 | * The trace class' reference count is 0 if we're here. Increment | |
83 | * it to avoid a double-destroy (possibly infinitely recursive). | |
84 | * This could happen for example if a destruction listener did | |
85 | * bt_object_get_ref() (or anything that causes | |
86 | * bt_object_get_ref() to be called) on the trace class (ref. | |
87 | * count goes from 0 to 1), and then bt_object_put_ref(): the | |
88 | * reference count would go from 1 to 0 again and this function | |
89 | * would be called again. | |
90 | */ | |
91 | tc->base.ref_count++; | |
92 | ||
ad5268b5 FD |
93 | /* Call all the trace class destruction listeners */ |
94 | for (i = 0; i < tc->destruction_listeners->len; i++) { | |
95 | struct bt_trace_class_destruction_listener_elem elem = | |
96 | g_array_index(tc->destruction_listeners, | |
97 | struct bt_trace_class_destruction_listener_elem, i); | |
98 | ||
99 | if (elem.func) { | |
100 | elem.func(tc, elem.data); | |
101 | } | |
c47a6bec SM |
102 | |
103 | /* | |
104 | * The destruction listener should not have kept a | |
105 | * reference to the trace class. | |
106 | */ | |
107 | BT_ASSERT_PRE(tc->base.ref_count == 1, "Destruction listener kept a reference to the trace class being destroyed: %![tc-]+T", tc); | |
ad5268b5 FD |
108 | } |
109 | g_array_free(tc->destruction_listeners, TRUE); | |
110 | tc->destruction_listeners = NULL; | |
111 | } | |
862ca4ed PP |
112 | |
113 | if (tc->environment) { | |
114 | BT_LOGD_STR("Destroying environment attributes."); | |
115 | bt_attributes_destroy(tc->environment); | |
116 | tc->environment = NULL; | |
117 | } | |
118 | ||
119 | if (tc->name.str) { | |
120 | g_string_free(tc->name.str, TRUE); | |
121 | tc->name.str = NULL; | |
122 | tc->name.value = NULL; | |
123 | } | |
124 | ||
125 | if (tc->stream_classes) { | |
126 | BT_LOGD_STR("Destroying stream classes."); | |
127 | g_ptr_array_free(tc->stream_classes, TRUE); | |
128 | tc->stream_classes = NULL; | |
129 | } | |
130 | ||
862ca4ed PP |
131 | g_free(tc); |
132 | } | |
133 | ||
41693723 | 134 | struct bt_trace_class *bt_trace_class_create(bt_self_component *self_comp) |
862ca4ed PP |
135 | { |
136 | struct bt_trace_class *tc = NULL; | |
862ca4ed | 137 | |
41693723 | 138 | BT_ASSERT_PRE_NON_NULL(self_comp, "Self component"); |
862ca4ed PP |
139 | BT_LOGD_STR("Creating default trace class object."); |
140 | tc = g_new0(struct bt_trace_class, 1); | |
141 | if (!tc) { | |
142 | BT_LOGE_STR("Failed to allocate one trace class."); | |
143 | goto error; | |
144 | } | |
145 | ||
146 | bt_object_init_shared_with_parent(&tc->base, destroy_trace_class); | |
147 | ||
148 | tc->stream_classes = g_ptr_array_new_with_free_func( | |
149 | (GDestroyNotify) bt_object_try_spec_release); | |
150 | if (!tc->stream_classes) { | |
151 | BT_LOGE_STR("Failed to allocate one GPtrArray."); | |
152 | goto error; | |
153 | } | |
154 | ||
155 | tc->name.str = g_string_new(NULL); | |
156 | if (!tc->name.str) { | |
157 | BT_LOGE_STR("Failed to allocate one GString."); | |
158 | goto error; | |
159 | } | |
160 | ||
161 | tc->environment = bt_attributes_create(); | |
162 | if (!tc->environment) { | |
163 | BT_LOGE_STR("Cannot create empty attributes object."); | |
164 | goto error; | |
165 | } | |
166 | ||
ad5268b5 FD |
167 | tc->destruction_listeners = g_array_new(FALSE, TRUE, |
168 | sizeof(struct bt_trace_class_destruction_listener_elem)); | |
169 | if (!tc->destruction_listeners) { | |
170 | BT_LOGE_STR("Failed to allocate one GArray."); | |
171 | goto error; | |
172 | } | |
173 | ||
862ca4ed | 174 | tc->assigns_automatic_stream_class_id = true; |
862ca4ed PP |
175 | BT_LIB_LOGD("Created trace class object: %!+T", tc); |
176 | goto end; | |
177 | ||
178 | error: | |
179 | BT_OBJECT_PUT_REF_AND_RESET(tc); | |
180 | ||
181 | end: | |
182 | return tc; | |
183 | } | |
184 | ||
185 | const char *bt_trace_class_get_name(const struct bt_trace_class *tc) | |
186 | { | |
187 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
188 | return tc->name.value; | |
189 | } | |
190 | ||
d24d5663 | 191 | enum bt_trace_class_set_name_status bt_trace_class_set_name( |
a1ed915c | 192 | struct bt_trace_class *tc, const char *name) |
862ca4ed PP |
193 | { |
194 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
195 | BT_ASSERT_PRE_NON_NULL(name, "Name"); | |
196 | BT_ASSERT_PRE_TRACE_CLASS_HOT(tc); | |
197 | g_string_assign(tc->name.str, name); | |
198 | tc->name.value = tc->name.str->str; | |
3f7d4d90 | 199 | BT_LIB_LOGD("Set trace class's name: %!+T", tc); |
d24d5663 | 200 | return BT_FUNC_STATUS_OK; |
862ca4ed PP |
201 | } |
202 | ||
203 | bt_uuid bt_trace_class_get_uuid(const struct bt_trace_class *tc) | |
204 | { | |
205 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
206 | return tc->uuid.value; | |
207 | } | |
208 | ||
209 | void bt_trace_class_set_uuid(struct bt_trace_class *tc, bt_uuid uuid) | |
210 | { | |
211 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
212 | BT_ASSERT_PRE_NON_NULL(uuid, "UUID"); | |
213 | BT_ASSERT_PRE_TRACE_CLASS_HOT(tc); | |
214 | memcpy(tc->uuid.uuid, uuid, BABELTRACE_UUID_LEN); | |
215 | tc->uuid.value = tc->uuid.uuid; | |
3f7d4d90 | 216 | BT_LIB_LOGD("Set trace class's UUID: %!+T", tc); |
862ca4ed PP |
217 | } |
218 | ||
d24d5663 | 219 | enum bt_trace_class_add_listener_status bt_trace_class_add_destruction_listener( |
ad5268b5 FD |
220 | const struct bt_trace_class *_tc, |
221 | bt_trace_class_destruction_listener_func listener, | |
222 | void *data, uint64_t *listener_id) | |
223 | { | |
224 | struct bt_trace_class *tc = (void *) _tc; | |
225 | uint64_t i; | |
226 | struct bt_trace_class_destruction_listener_elem new_elem = { | |
227 | .func = listener, | |
228 | .data = data, | |
229 | }; | |
230 | ||
231 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
232 | BT_ASSERT_PRE_NON_NULL(listener, "Listener"); | |
233 | ||
234 | /* Find the next available spot */ | |
235 | for (i = 0; i < tc->destruction_listeners->len; i++) { | |
236 | struct bt_trace_class_destruction_listener_elem elem = | |
237 | g_array_index(tc->destruction_listeners, | |
238 | struct bt_trace_class_destruction_listener_elem, i); | |
239 | ||
240 | if (!elem.func) { | |
241 | break; | |
242 | } | |
243 | } | |
244 | ||
245 | if (i == tc->destruction_listeners->len) { | |
246 | g_array_append_val(tc->destruction_listeners, new_elem); | |
247 | } else { | |
248 | g_array_insert_val(tc->destruction_listeners, i, new_elem); | |
249 | } | |
250 | ||
251 | if (listener_id) { | |
252 | *listener_id = i; | |
253 | } | |
254 | ||
3f7d4d90 | 255 | BT_LIB_LOGD("Added trace class destruction listener: %![tc-]+T, " |
ad5268b5 | 256 | "listener-id=%" PRIu64, tc, i); |
d24d5663 | 257 | return BT_FUNC_STATUS_OK; |
ad5268b5 FD |
258 | } |
259 | ||
260 | BT_ASSERT_PRE_FUNC | |
261 | static | |
262 | bool has_listener_id(const struct bt_trace_class *tc, uint64_t listener_id) | |
263 | { | |
264 | BT_ASSERT(listener_id < tc->destruction_listeners->len); | |
265 | return (&g_array_index(tc->destruction_listeners, | |
266 | struct bt_trace_class_destruction_listener_elem, | |
267 | listener_id))->func != NULL; | |
268 | } | |
269 | ||
d24d5663 | 270 | enum bt_trace_class_remove_listener_status bt_trace_class_remove_destruction_listener( |
ad5268b5 FD |
271 | const struct bt_trace_class *_tc, uint64_t listener_id) |
272 | { | |
273 | struct bt_trace_class *tc = (void *) _tc; | |
274 | struct bt_trace_class_destruction_listener_elem *elem; | |
275 | ||
276 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
277 | BT_ASSERT_PRE(has_listener_id(tc, listener_id), | |
278 | "Trace class has no such trace class destruction listener ID: " | |
279 | "%![tc-]+T, %" PRIu64, tc, listener_id); | |
280 | elem = &g_array_index(tc->destruction_listeners, | |
281 | struct bt_trace_class_destruction_listener_elem, | |
282 | listener_id); | |
283 | BT_ASSERT(elem->func); | |
284 | ||
285 | elem->func = NULL; | |
286 | elem->data = NULL; | |
3f7d4d90 | 287 | BT_LIB_LOGD("Removed trace class destruction listener: " |
ad5268b5 FD |
288 | "%![tc-]+T, listener-id=%" PRIu64, |
289 | tc, listener_id); | |
d24d5663 | 290 | return BT_FUNC_STATUS_OK; |
ad5268b5 FD |
291 | } |
292 | ||
862ca4ed PP |
293 | BT_ASSERT_FUNC |
294 | static | |
295 | bool trace_has_environment_entry(const struct bt_trace_class *tc, const char *name) | |
296 | { | |
297 | BT_ASSERT(tc); | |
298 | ||
299 | return bt_attributes_borrow_field_value_by_name( | |
300 | tc->environment, name) != NULL; | |
301 | } | |
302 | ||
303 | static | |
d24d5663 PP |
304 | enum bt_trace_class_set_environment_entry_status set_environment_entry( |
305 | struct bt_trace_class *tc, | |
a1ed915c | 306 | const char *name, struct bt_value *value) |
862ca4ed PP |
307 | { |
308 | int ret; | |
309 | ||
310 | BT_ASSERT(tc); | |
311 | BT_ASSERT(name); | |
312 | BT_ASSERT(value); | |
313 | BT_ASSERT_PRE(!tc->frozen || | |
314 | !trace_has_environment_entry(tc, name), | |
315 | "Trace class is frozen: cannot replace environment entry: " | |
316 | "%![tc-]+T, entry-name=\"%s\"", tc, name); | |
317 | ret = bt_attributes_set_field_value(tc->environment, name, | |
318 | value); | |
862ca4ed | 319 | if (ret) { |
d24d5663 | 320 | ret = BT_FUNC_STATUS_MEMORY_ERROR; |
862ca4ed PP |
321 | BT_LIB_LOGE("Cannot set trace class's environment entry: " |
322 | "%![tc-]+T, entry-name=\"%s\"", tc, name); | |
323 | } else { | |
a1ed915c | 324 | bt_value_freeze(value); |
3f7d4d90 | 325 | BT_LIB_LOGD("Set trace class's environment entry: " |
862ca4ed PP |
326 | "%![tc-]+T, entry-name=\"%s\"", tc, name); |
327 | } | |
328 | ||
329 | return ret; | |
330 | } | |
331 | ||
d24d5663 PP |
332 | enum bt_trace_class_set_environment_entry_status |
333 | bt_trace_class_set_environment_entry_string( | |
862ca4ed PP |
334 | struct bt_trace_class *tc, const char *name, const char *value) |
335 | { | |
336 | int ret; | |
337 | struct bt_value *value_obj; | |
338 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
339 | BT_ASSERT_PRE_NON_NULL(name, "Name"); | |
340 | BT_ASSERT_PRE_NON_NULL(value, "Value"); | |
341 | value_obj = bt_value_string_create_init(value); | |
342 | if (!value_obj) { | |
343 | BT_LOGE_STR("Cannot create a string value object."); | |
344 | ret = -1; | |
345 | goto end; | |
346 | } | |
347 | ||
348 | /* set_environment_entry() logs errors */ | |
349 | ret = set_environment_entry(tc, name, value_obj); | |
350 | ||
351 | end: | |
352 | bt_object_put_ref(value_obj); | |
353 | return ret; | |
354 | } | |
355 | ||
d24d5663 PP |
356 | enum bt_trace_class_set_environment_entry_status |
357 | bt_trace_class_set_environment_entry_integer( | |
a1ed915c | 358 | struct bt_trace_class *tc, const char *name, int64_t value) |
862ca4ed PP |
359 | { |
360 | int ret; | |
361 | struct bt_value *value_obj; | |
362 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
363 | BT_ASSERT_PRE_NON_NULL(name, "Name"); | |
fdd3a2da | 364 | value_obj = bt_value_signed_integer_create_init(value); |
862ca4ed PP |
365 | if (!value_obj) { |
366 | BT_LOGE_STR("Cannot create an integer value object."); | |
d24d5663 | 367 | ret = BT_FUNC_STATUS_MEMORY_ERROR; |
862ca4ed PP |
368 | goto end; |
369 | } | |
370 | ||
371 | /* set_environment_entry() logs errors */ | |
372 | ret = set_environment_entry(tc, name, value_obj); | |
373 | ||
374 | end: | |
375 | bt_object_put_ref(value_obj); | |
376 | return ret; | |
377 | } | |
378 | ||
379 | uint64_t bt_trace_class_get_environment_entry_count(const struct bt_trace_class *tc) | |
380 | { | |
381 | int64_t ret; | |
382 | ||
383 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
384 | ret = bt_attributes_get_count(tc->environment); | |
385 | BT_ASSERT(ret >= 0); | |
386 | return (uint64_t) ret; | |
387 | } | |
388 | ||
389 | void bt_trace_class_borrow_environment_entry_by_index_const( | |
390 | const struct bt_trace_class *tc, uint64_t index, | |
391 | const char **name, const struct bt_value **value) | |
392 | { | |
393 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
394 | BT_ASSERT_PRE_NON_NULL(name, "Name"); | |
395 | BT_ASSERT_PRE_NON_NULL(value, "Value"); | |
396 | BT_ASSERT_PRE_VALID_INDEX(index, | |
397 | bt_attributes_get_count(tc->environment)); | |
398 | *value = bt_attributes_borrow_field_value(tc->environment, index); | |
399 | BT_ASSERT(*value); | |
400 | *name = bt_attributes_get_field_name(tc->environment, index); | |
401 | BT_ASSERT(*name); | |
402 | } | |
403 | ||
404 | const struct bt_value *bt_trace_class_borrow_environment_entry_value_by_name_const( | |
405 | const struct bt_trace_class *tc, const char *name) | |
406 | { | |
407 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
408 | BT_ASSERT_PRE_NON_NULL(name, "Name"); | |
409 | return bt_attributes_borrow_field_value_by_name(tc->environment, | |
410 | name); | |
411 | } | |
412 | ||
413 | uint64_t bt_trace_class_get_stream_class_count(const struct bt_trace_class *tc) | |
414 | { | |
415 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
416 | return (uint64_t) tc->stream_classes->len; | |
417 | } | |
418 | ||
419 | struct bt_stream_class *bt_trace_class_borrow_stream_class_by_index( | |
420 | struct bt_trace_class *tc, uint64_t index) | |
421 | { | |
422 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
423 | BT_ASSERT_PRE_VALID_INDEX(index, tc->stream_classes->len); | |
424 | return g_ptr_array_index(tc->stream_classes, index); | |
425 | } | |
426 | ||
427 | const struct bt_stream_class * | |
428 | bt_trace_class_borrow_stream_class_by_index_const( | |
429 | const struct bt_trace_class *tc, uint64_t index) | |
430 | { | |
431 | return bt_trace_class_borrow_stream_class_by_index( | |
432 | (void *) tc, index); | |
433 | } | |
434 | ||
435 | struct bt_stream_class *bt_trace_class_borrow_stream_class_by_id( | |
436 | struct bt_trace_class *tc, uint64_t id) | |
437 | { | |
438 | struct bt_stream_class *stream_class = NULL; | |
439 | uint64_t i; | |
440 | ||
441 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
442 | ||
443 | for (i = 0; i < tc->stream_classes->len; i++) { | |
444 | struct bt_stream_class *stream_class_candidate = | |
445 | g_ptr_array_index(tc->stream_classes, i); | |
446 | ||
447 | if (stream_class_candidate->id == id) { | |
448 | stream_class = stream_class_candidate; | |
449 | goto end; | |
450 | } | |
451 | } | |
452 | ||
453 | end: | |
454 | return stream_class; | |
455 | } | |
456 | ||
457 | const struct bt_stream_class * | |
458 | bt_trace_class_borrow_stream_class_by_id_const( | |
459 | const struct bt_trace_class *tc, uint64_t id) | |
460 | { | |
461 | return bt_trace_class_borrow_stream_class_by_id((void *) tc, id); | |
462 | } | |
463 | ||
862ca4ed PP |
464 | BT_HIDDEN |
465 | void _bt_trace_class_freeze(const struct bt_trace_class *tc) | |
466 | { | |
862ca4ed PP |
467 | BT_ASSERT(tc); |
468 | BT_LIB_LOGD("Freezing trace class: %!+T", tc); | |
469 | ((struct bt_trace_class *) tc)->frozen = true; | |
470 | } | |
471 | ||
472 | bt_bool bt_trace_class_assigns_automatic_stream_class_id(const struct bt_trace_class *tc) | |
473 | { | |
474 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
475 | return (bt_bool) tc->assigns_automatic_stream_class_id; | |
476 | } | |
477 | ||
478 | void bt_trace_class_set_assigns_automatic_stream_class_id(struct bt_trace_class *tc, | |
479 | bt_bool value) | |
480 | { | |
481 | BT_ASSERT_PRE_NON_NULL(tc, "Trace class"); | |
482 | BT_ASSERT_PRE_TRACE_CLASS_HOT(tc); | |
483 | tc->assigns_automatic_stream_class_id = (bool) value; | |
3f7d4d90 | 484 | BT_LIB_LOGD("Set trace class's automatic stream class ID " |
862ca4ed PP |
485 | "assignment property: %!+T", tc); |
486 | } | |
c5b9b441 PP |
487 | |
488 | void bt_trace_class_get_ref(const struct bt_trace_class *trace_class) | |
489 | { | |
490 | bt_object_get_ref(trace_class); | |
491 | } | |
492 | ||
493 | void bt_trace_class_put_ref(const struct bt_trace_class *trace_class) | |
494 | { | |
495 | bt_object_put_ref(trace_class); | |
496 | } |