2 * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
3 * Copyright 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
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:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
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
24 #define BT_LOG_TAG "TRACE"
25 #include "lib/lib-logging.h"
27 #include "lib/assert-pre.h"
28 #include <babeltrace2/trace-ir/trace-class.h>
29 #include <babeltrace2/trace-ir/trace-class-const.h>
30 #include <babeltrace2/trace-ir/event-class.h>
31 #include "ctf-writer/functor.h"
32 #include "ctf-writer/clock.h"
33 #include "compat/compiler.h"
34 #include <babeltrace2/value.h>
35 #include <babeltrace2/value-const.h>
36 #include "lib/value.h"
37 #include <babeltrace2/types.h>
38 #include "compat/endian.h"
39 #include "common/assert.h"
40 #include "compat/glib.h"
46 #include "attributes.h"
47 #include "clock-class.h"
48 #include "event-class.h"
50 #include "field-class.h"
51 #include "field-wrapper.h"
52 #include "resolve-field-path.h"
53 #include "stream-class.h"
58 struct bt_trace_class_destruction_listener_elem
{
59 bt_trace_class_destruction_listener_func func
;
63 #define BT_ASSERT_PRE_TRACE_CLASS_HOT(_tc) \
64 BT_ASSERT_PRE_HOT((_tc), "Trace class", ": %!+T", (_tc))
67 void destroy_trace_class(struct bt_object
*obj
)
69 struct bt_trace_class
*tc
= (void *) obj
;
71 BT_LIB_LOGD("Destroying trace class object: %!+T", tc
);
73 * Call destruction listener functions so that everything else
74 * still exists in the trace class.
76 if (tc
->destruction_listeners
) {
78 BT_LIB_LOGV("Calling trace class destruction listener(s): %!+T", tc
);
81 * The trace class' reference count is 0 if we're here. Increment
82 * it to avoid a double-destroy (possibly infinitely recursive).
83 * This could happen for example if a destruction listener did
84 * bt_object_get_ref() (or anything that causes
85 * bt_object_get_ref() to be called) on the trace class (ref.
86 * count goes from 0 to 1), and then bt_object_put_ref(): the
87 * reference count would go from 1 to 0 again and this function
88 * would be called again.
92 /* Call all the trace class destruction listeners */
93 for (i
= 0; i
< tc
->destruction_listeners
->len
; i
++) {
94 struct bt_trace_class_destruction_listener_elem elem
=
95 g_array_index(tc
->destruction_listeners
,
96 struct bt_trace_class_destruction_listener_elem
, i
);
99 elem
.func(tc
, elem
.data
);
103 * The destruction listener should not have kept a
104 * reference to the trace class.
106 BT_ASSERT_PRE(tc
->base
.ref_count
== 1, "Destruction listener kept a reference to the trace class being destroyed: %![tc-]+T", tc
);
108 g_array_free(tc
->destruction_listeners
, TRUE
);
109 tc
->destruction_listeners
= NULL
;
112 if (tc
->environment
) {
113 BT_LOGD_STR("Destroying environment attributes.");
114 bt_attributes_destroy(tc
->environment
);
115 tc
->environment
= NULL
;
119 g_string_free(tc
->name
.str
, TRUE
);
121 tc
->name
.value
= NULL
;
124 if (tc
->stream_classes
) {
125 BT_LOGD_STR("Destroying stream classes.");
126 g_ptr_array_free(tc
->stream_classes
, TRUE
);
127 tc
->stream_classes
= NULL
;
133 struct bt_trace_class
*bt_trace_class_create(bt_self_component
*self_comp
)
135 struct bt_trace_class
*tc
= NULL
;
137 BT_ASSERT_PRE_NON_NULL(self_comp
, "Self component");
138 BT_LOGD_STR("Creating default trace class object.");
139 tc
= g_new0(struct bt_trace_class
, 1);
141 BT_LOGE_STR("Failed to allocate one trace class.");
145 bt_object_init_shared_with_parent(&tc
->base
, destroy_trace_class
);
147 tc
->stream_classes
= g_ptr_array_new_with_free_func(
148 (GDestroyNotify
) bt_object_try_spec_release
);
149 if (!tc
->stream_classes
) {
150 BT_LOGE_STR("Failed to allocate one GPtrArray.");
154 tc
->name
.str
= g_string_new(NULL
);
156 BT_LOGE_STR("Failed to allocate one GString.");
160 tc
->environment
= bt_attributes_create();
161 if (!tc
->environment
) {
162 BT_LOGE_STR("Cannot create empty attributes object.");
166 tc
->destruction_listeners
= g_array_new(FALSE
, TRUE
,
167 sizeof(struct bt_trace_class_destruction_listener_elem
));
168 if (!tc
->destruction_listeners
) {
169 BT_LOGE_STR("Failed to allocate one GArray.");
173 tc
->assigns_automatic_stream_class_id
= true;
174 BT_LIB_LOGD("Created trace class object: %!+T", tc
);
178 BT_OBJECT_PUT_REF_AND_RESET(tc
);
184 const char *bt_trace_class_get_name(const struct bt_trace_class
*tc
)
186 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
187 return tc
->name
.value
;
190 enum bt_trace_class_status
bt_trace_class_set_name(
191 struct bt_trace_class
*tc
, const char *name
)
193 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
194 BT_ASSERT_PRE_NON_NULL(name
, "Name");
195 BT_ASSERT_PRE_TRACE_CLASS_HOT(tc
);
196 g_string_assign(tc
->name
.str
, name
);
197 tc
->name
.value
= tc
->name
.str
->str
;
198 BT_LIB_LOGV("Set trace class's name: %!+T", tc
);
199 return BT_TRACE_CLASS_STATUS_OK
;
202 bt_uuid
bt_trace_class_get_uuid(const struct bt_trace_class
*tc
)
204 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
205 return tc
->uuid
.value
;
208 void bt_trace_class_set_uuid(struct bt_trace_class
*tc
, bt_uuid uuid
)
210 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
211 BT_ASSERT_PRE_NON_NULL(uuid
, "UUID");
212 BT_ASSERT_PRE_TRACE_CLASS_HOT(tc
);
213 memcpy(tc
->uuid
.uuid
, uuid
, BABELTRACE_UUID_LEN
);
214 tc
->uuid
.value
= tc
->uuid
.uuid
;
215 BT_LIB_LOGV("Set trace class's UUID: %!+T", tc
);
218 enum bt_trace_class_status
bt_trace_class_add_destruction_listener(
219 const struct bt_trace_class
*_tc
,
220 bt_trace_class_destruction_listener_func listener
,
221 void *data
, uint64_t *listener_id
)
223 struct bt_trace_class
*tc
= (void *) _tc
;
225 struct bt_trace_class_destruction_listener_elem new_elem
= {
230 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
231 BT_ASSERT_PRE_NON_NULL(listener
, "Listener");
233 /* Find the next available spot */
234 for (i
= 0; i
< tc
->destruction_listeners
->len
; i
++) {
235 struct bt_trace_class_destruction_listener_elem elem
=
236 g_array_index(tc
->destruction_listeners
,
237 struct bt_trace_class_destruction_listener_elem
, i
);
244 if (i
== tc
->destruction_listeners
->len
) {
245 g_array_append_val(tc
->destruction_listeners
, new_elem
);
247 g_array_insert_val(tc
->destruction_listeners
, i
, new_elem
);
254 BT_LIB_LOGV("Added trace class destruction listener: %![tc-]+T, "
255 "listener-id=%" PRIu64
, tc
, i
);
256 return BT_TRACE_CLASS_STATUS_OK
;
261 bool has_listener_id(const struct bt_trace_class
*tc
, uint64_t listener_id
)
263 BT_ASSERT(listener_id
< tc
->destruction_listeners
->len
);
264 return (&g_array_index(tc
->destruction_listeners
,
265 struct bt_trace_class_destruction_listener_elem
,
266 listener_id
))->func
!= NULL
;
269 enum bt_trace_class_status
bt_trace_class_remove_destruction_listener(
270 const struct bt_trace_class
*_tc
, uint64_t listener_id
)
272 struct bt_trace_class
*tc
= (void *) _tc
;
273 struct bt_trace_class_destruction_listener_elem
*elem
;
275 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
276 BT_ASSERT_PRE(has_listener_id(tc
, listener_id
),
277 "Trace class has no such trace class destruction listener ID: "
278 "%![tc-]+T, %" PRIu64
, tc
, listener_id
);
279 elem
= &g_array_index(tc
->destruction_listeners
,
280 struct bt_trace_class_destruction_listener_elem
,
282 BT_ASSERT(elem
->func
);
286 BT_LIB_LOGV("Removed trace class destruction listener: "
287 "%![tc-]+T, listener-id=%" PRIu64
,
289 return BT_TRACE_CLASS_STATUS_OK
;
294 bool trace_has_environment_entry(const struct bt_trace_class
*tc
, const char *name
)
298 return bt_attributes_borrow_field_value_by_name(
299 tc
->environment
, name
) != NULL
;
303 enum bt_trace_class_status
set_environment_entry(struct bt_trace_class
*tc
,
304 const char *name
, struct bt_value
*value
)
311 BT_ASSERT_PRE(!tc
->frozen
||
312 !trace_has_environment_entry(tc
, name
),
313 "Trace class is frozen: cannot replace environment entry: "
314 "%![tc-]+T, entry-name=\"%s\"", tc
, name
);
315 ret
= bt_attributes_set_field_value(tc
->environment
, name
,
318 ret
= BT_TRACE_CLASS_STATUS_NOMEM
;
319 BT_LIB_LOGE("Cannot set trace class's environment entry: "
320 "%![tc-]+T, entry-name=\"%s\"", tc
, name
);
322 bt_value_freeze(value
);
323 BT_LIB_LOGV("Set trace class's environment entry: "
324 "%![tc-]+T, entry-name=\"%s\"", tc
, name
);
330 enum bt_trace_class_status
bt_trace_class_set_environment_entry_string(
331 struct bt_trace_class
*tc
, const char *name
, const char *value
)
334 struct bt_value
*value_obj
;
335 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
336 BT_ASSERT_PRE_NON_NULL(name
, "Name");
337 BT_ASSERT_PRE_NON_NULL(value
, "Value");
338 value_obj
= bt_value_string_create_init(value
);
340 BT_LOGE_STR("Cannot create a string value object.");
345 /* set_environment_entry() logs errors */
346 ret
= set_environment_entry(tc
, name
, value_obj
);
349 bt_object_put_ref(value_obj
);
353 enum bt_trace_class_status
bt_trace_class_set_environment_entry_integer(
354 struct bt_trace_class
*tc
, const char *name
, int64_t value
)
357 struct bt_value
*value_obj
;
358 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
359 BT_ASSERT_PRE_NON_NULL(name
, "Name");
360 value_obj
= bt_value_signed_integer_create_init(value
);
362 BT_LOGE_STR("Cannot create an integer value object.");
363 ret
= BT_TRACE_CLASS_STATUS_NOMEM
;
367 /* set_environment_entry() logs errors */
368 ret
= set_environment_entry(tc
, name
, value_obj
);
371 bt_object_put_ref(value_obj
);
375 uint64_t bt_trace_class_get_environment_entry_count(const struct bt_trace_class
*tc
)
379 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
380 ret
= bt_attributes_get_count(tc
->environment
);
382 return (uint64_t) ret
;
385 void bt_trace_class_borrow_environment_entry_by_index_const(
386 const struct bt_trace_class
*tc
, uint64_t index
,
387 const char **name
, const struct bt_value
**value
)
389 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
390 BT_ASSERT_PRE_NON_NULL(name
, "Name");
391 BT_ASSERT_PRE_NON_NULL(value
, "Value");
392 BT_ASSERT_PRE_VALID_INDEX(index
,
393 bt_attributes_get_count(tc
->environment
));
394 *value
= bt_attributes_borrow_field_value(tc
->environment
, index
);
396 *name
= bt_attributes_get_field_name(tc
->environment
, index
);
400 const struct bt_value
*bt_trace_class_borrow_environment_entry_value_by_name_const(
401 const struct bt_trace_class
*tc
, const char *name
)
403 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
404 BT_ASSERT_PRE_NON_NULL(name
, "Name");
405 return bt_attributes_borrow_field_value_by_name(tc
->environment
,
409 uint64_t bt_trace_class_get_stream_class_count(const struct bt_trace_class
*tc
)
411 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
412 return (uint64_t) tc
->stream_classes
->len
;
415 struct bt_stream_class
*bt_trace_class_borrow_stream_class_by_index(
416 struct bt_trace_class
*tc
, uint64_t index
)
418 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
419 BT_ASSERT_PRE_VALID_INDEX(index
, tc
->stream_classes
->len
);
420 return g_ptr_array_index(tc
->stream_classes
, index
);
423 const struct bt_stream_class
*
424 bt_trace_class_borrow_stream_class_by_index_const(
425 const struct bt_trace_class
*tc
, uint64_t index
)
427 return bt_trace_class_borrow_stream_class_by_index(
431 struct bt_stream_class
*bt_trace_class_borrow_stream_class_by_id(
432 struct bt_trace_class
*tc
, uint64_t id
)
434 struct bt_stream_class
*stream_class
= NULL
;
437 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
439 for (i
= 0; i
< tc
->stream_classes
->len
; i
++) {
440 struct bt_stream_class
*stream_class_candidate
=
441 g_ptr_array_index(tc
->stream_classes
, i
);
443 if (stream_class_candidate
->id
== id
) {
444 stream_class
= stream_class_candidate
;
453 const struct bt_stream_class
*
454 bt_trace_class_borrow_stream_class_by_id_const(
455 const struct bt_trace_class
*tc
, uint64_t id
)
457 return bt_trace_class_borrow_stream_class_by_id((void *) tc
, id
);
461 void _bt_trace_class_freeze(const struct bt_trace_class
*tc
)
464 BT_LIB_LOGD("Freezing trace class: %!+T", tc
);
465 ((struct bt_trace_class
*) tc
)->frozen
= true;
468 bt_bool
bt_trace_class_assigns_automatic_stream_class_id(const struct bt_trace_class
*tc
)
470 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
471 return (bt_bool
) tc
->assigns_automatic_stream_class_id
;
474 void bt_trace_class_set_assigns_automatic_stream_class_id(struct bt_trace_class
*tc
,
477 BT_ASSERT_PRE_NON_NULL(tc
, "Trace class");
478 BT_ASSERT_PRE_TRACE_CLASS_HOT(tc
);
479 tc
->assigns_automatic_stream_class_id
= (bool) value
;
480 BT_LIB_LOGV("Set trace class's automatic stream class ID "
481 "assignment property: %!+T", tc
);
484 void bt_trace_class_get_ref(const struct bt_trace_class
*trace_class
)
486 bt_object_get_ref(trace_class
);
489 void bt_trace_class_put_ref(const struct bt_trace_class
*trace_class
)
491 bt_object_put_ref(trace_class
);