[babeltrace.git] / src / lib / trace-ir / trace-class.c

/*
 * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
 * Copyright 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#define BT_LOG_TAG "LIB/TRACE-CLASS"
#include "lib/logging.h"

#include "lib/assert-pre.h"
#include "lib/assert-post.h"
#include <babeltrace2/trace-ir/trace-class.h>
#include <babeltrace2/trace-ir/trace-class-const.h>
#include <babeltrace2/trace-ir/event-class.h>
#include "ctf-writer/functor.h"
#include "ctf-writer/clock.h"
#include "compat/compiler.h"
#include <babeltrace2/value.h>
#include <babeltrace2/value-const.h>
#include "lib/value.h"
#include <babeltrace2/types.h>
#include "compat/endian.h"
#include "common/assert.h"
#include "compat/glib.h"
#include <inttypes.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>

#include "clock-class.h"
#include "event-class.h"
#include "event.h"
#include "field-class.h"
#include "field-wrapper.h"
#include "resolve-field-path.h"
#include "stream-class.h"
#include "stream.h"
#include "trace.h"
#include "utils.h"
#include "lib/value.h"
#include "lib/func-status.h"

struct bt_trace_class_destruction_listener_elem {
	bt_trace_class_destruction_listener_func func;
	void *data;
};

#define BT_ASSERT_PRE_DEV_TRACE_CLASS_HOT(_tc)				\
	BT_ASSERT_PRE_DEV_HOT((_tc), "Trace class", ": %!+T", (_tc))

static
void destroy_trace_class(struct bt_object *obj)
{
	struct bt_trace_class *tc = (void *) obj;

	BT_LIB_LOGD("Destroying trace class object: %!+T", tc);
	BT_OBJECT_PUT_REF_AND_RESET(tc->user_attributes);

	/*
	 * Call destruction listener functions so that everything else
	 * still exists in the trace class.
	 */
	if (tc->destruction_listeners) {
		uint64_t i;
		BT_LIB_LOGD("Calling trace class destruction listener(s): %!+T", tc);

		/*
		* The trace class' reference count is 0 if we're here. Increment
		* it to avoid a double-destroy (possibly infinitely recursive).
		* This could happen for example if a destruction listener did
		* bt_object_get_ref() (or anything that causes
		* bt_object_get_ref() to be called) on the trace class (ref.
		* count goes from 0 to 1), and then bt_object_put_ref(): the
		* reference count would go from 1 to 0 again and this function
		* would be called again.
		*/
		tc->base.ref_count++;

		/* Call all the trace class destruction listeners */
		for (i = 0; i < tc->destruction_listeners->len; i++) {
			struct bt_trace_class_destruction_listener_elem elem =
				g_array_index(tc->destruction_listeners,
						struct bt_trace_class_destruction_listener_elem, i);

			if (elem.func) {
				elem.func(tc, elem.data);
			}

			/*
			 * The destruction listener should not have kept a
			 * reference to the trace class.
			 */
			BT_ASSERT_POST(tc->base.ref_count == 1, "Destruction listener kept a reference to the trace class being destroyed: %![tc-]+T", tc);
		}
		g_array_free(tc->destruction_listeners, TRUE);
		tc->destruction_listeners = NULL;
	}

	if (tc->stream_classes) {
		BT_LOGD_STR("Destroying stream classes.");
		g_ptr_array_free(tc->stream_classes, TRUE);
		tc->stream_classes = NULL;
	}

	g_free(tc);
}

struct bt_trace_class *bt_trace_class_create(bt_self_component *self_comp)
{
	struct bt_trace_class *tc = NULL;

	BT_ASSERT_PRE_NON_NULL(self_comp, "Self component");
	BT_LOGD_STR("Creating default trace class object.");
	tc = g_new0(struct bt_trace_class, 1);
	if (!tc) {
		BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one trace class.");
		goto error;
	}

	bt_object_init_shared_with_parent(&tc->base, destroy_trace_class);
	tc->user_attributes = bt_value_map_create();
	if (!tc->user_attributes) {
		BT_LIB_LOGE_APPEND_CAUSE(
			"Failed to create a map value object.");
		goto error;
	}

	tc->stream_classes = g_ptr_array_new_with_free_func(
		(GDestroyNotify) bt_object_try_spec_release);
	if (!tc->stream_classes) {
		BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one GPtrArray.");
		goto error;
	}

	tc->destruction_listeners = g_array_new(FALSE, TRUE,
		sizeof(struct bt_trace_class_destruction_listener_elem));
	if (!tc->destruction_listeners) {
		BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one GArray.");
		goto error;
	}

	tc->assigns_automatic_stream_class_id = true;
	BT_LIB_LOGD("Created trace class object: %!+T", tc);
	goto end;

error:
	BT_OBJECT_PUT_REF_AND_RESET(tc);

end:
	return tc;
}

enum bt_trace_class_add_listener_status bt_trace_class_add_destruction_listener(
		const struct bt_trace_class *_tc,
		bt_trace_class_destruction_listener_func listener,
		void *data, bt_listener_id *listener_id)
{
	struct bt_trace_class *tc = (void *) _tc;
	uint64_t i;
	struct bt_trace_class_destruction_listener_elem new_elem = {
		.func = listener,
		.data = data,
	};

	BT_ASSERT_PRE_NON_NULL(tc, "Trace class");
	BT_ASSERT_PRE_NON_NULL(listener, "Listener");

	/* Find the next available spot */
	for (i = 0; i < tc->destruction_listeners->len; i++) {
		struct bt_trace_class_destruction_listener_elem elem =
			g_array_index(tc->destruction_listeners,
				struct bt_trace_class_destruction_listener_elem, i);

		if (!elem.func) {
			break;
		}
	}

	if (i == tc->destruction_listeners->len) {
		g_array_append_val(tc->destruction_listeners, new_elem);
	} else {
		g_array_insert_val(tc->destruction_listeners, i, new_elem);
	}

	if (listener_id) {
		*listener_id = i;
	}

	BT_LIB_LOGD("Added trace class destruction listener: %![tc-]+T, "
			"listener-id=%" PRIu64, tc, i);
	return BT_FUNC_STATUS_OK;
}

static
bool has_listener_id(const struct bt_trace_class *tc, uint64_t listener_id)
{
	BT_ASSERT(listener_id < tc->destruction_listeners->len);
	return (&g_array_index(tc->destruction_listeners,
			struct bt_trace_class_destruction_listener_elem,
			listener_id))->func;
}

enum bt_trace_class_remove_listener_status bt_trace_class_remove_destruction_listener(
		const struct bt_trace_class *_tc, bt_listener_id listener_id)
{
	struct bt_trace_class *tc = (void *) _tc;
	struct bt_trace_class_destruction_listener_elem *elem;

	BT_ASSERT_PRE_NON_NULL(tc, "Trace class");
	BT_ASSERT_PRE(has_listener_id(tc, listener_id),
		"Trace class has no such trace class destruction listener ID: "
		"%![tc-]+T, %" PRIu64, tc, listener_id);
	elem = &g_array_index(tc->destruction_listeners,
			struct bt_trace_class_destruction_listener_elem,
			listener_id);
	BT_ASSERT(elem->func);

	elem->func = NULL;
	elem->data = NULL;
	BT_LIB_LOGD("Removed trace class destruction listener: "
		"%![tc-]+T, listener-id=%" PRIu64,
		tc, listener_id);
	return BT_FUNC_STATUS_OK;
}

uint64_t bt_trace_class_get_stream_class_count(const struct bt_trace_class *tc)
{
	BT_ASSERT_PRE_DEV_NON_NULL(tc, "Trace class");
	return (uint64_t) tc->stream_classes->len;
}

struct bt_stream_class *bt_trace_class_borrow_stream_class_by_index(
		struct bt_trace_class *tc, uint64_t index)
{
	BT_ASSERT_PRE_DEV_NON_NULL(tc, "Trace class");
	BT_ASSERT_PRE_DEV_VALID_INDEX(index, tc->stream_classes->len);
	return g_ptr_array_index(tc->stream_classes, index);
}

const struct bt_stream_class *
bt_trace_class_borrow_stream_class_by_index_const(
		const struct bt_trace_class *tc, uint64_t index)
{
	return bt_trace_class_borrow_stream_class_by_index(
		(void *) tc, index);
}

struct bt_stream_class *bt_trace_class_borrow_stream_class_by_id(
		struct bt_trace_class *tc, uint64_t id)
{
	struct bt_stream_class *stream_class = NULL;
	uint64_t i;

	BT_ASSERT_PRE_DEV_NON_NULL(tc, "Trace class");

	for (i = 0; i < tc->stream_classes->len; i++) {
		struct bt_stream_class *stream_class_candidate =
			g_ptr_array_index(tc->stream_classes, i);

		if (stream_class_candidate->id == id) {
			stream_class = stream_class_candidate;
			goto end;
		}
	}

end:
	return stream_class;
}

const struct bt_stream_class *
bt_trace_class_borrow_stream_class_by_id_const(
		const struct bt_trace_class *tc, uint64_t id)
{
	return bt_trace_class_borrow_stream_class_by_id((void *) tc, id);
}

BT_HIDDEN
void _bt_trace_class_freeze(const struct bt_trace_class *tc)
{
	BT_ASSERT(tc);
	BT_LIB_LOGD("Freezing trace class: %!+T", tc);
	((struct bt_trace_class *) tc)->frozen = true;
}

bt_bool bt_trace_class_assigns_automatic_stream_class_id(const struct bt_trace_class *tc)
{
	BT_ASSERT_PRE_DEV_NON_NULL(tc, "Trace class");
	return (bt_bool) tc->assigns_automatic_stream_class_id;
}

void bt_trace_class_set_assigns_automatic_stream_class_id(struct bt_trace_class *tc,
		bt_bool value)
{
	BT_ASSERT_PRE_NON_NULL(tc, "Trace class");
	BT_ASSERT_PRE_DEV_TRACE_CLASS_HOT(tc);
	tc->assigns_automatic_stream_class_id = (bool) value;
	BT_LIB_LOGD("Set trace class's automatic stream class ID "
		"assignment property: %!+T", tc);
}

const struct bt_value *bt_trace_class_borrow_user_attributes_const(
		const struct bt_trace_class *trace_class)
{
	BT_ASSERT_PRE_DEV_NON_NULL(trace_class, "Trace class");
	return trace_class->user_attributes;
}

struct bt_value *bt_trace_class_borrow_user_attributes(
		struct bt_trace_class *trace_class)
{
	return (void *) bt_trace_class_borrow_user_attributes_const(
		(void *) trace_class);
}

void bt_trace_class_set_user_attributes(struct bt_trace_class *trace_class,
		const struct bt_value *user_attributes)
{
	BT_ASSERT_PRE_NON_NULL(trace_class, "Trace class");
	BT_ASSERT_PRE_NON_NULL(user_attributes, "User attributes");
	BT_ASSERT_PRE(user_attributes->type == BT_VALUE_TYPE_MAP,
		"User attributes object is not a map value object.");
	BT_ASSERT_PRE_DEV_TRACE_CLASS_HOT(trace_class);
	bt_object_put_ref_no_null_check(trace_class->user_attributes);
	trace_class->user_attributes = (void *) user_attributes;
	bt_object_get_ref_no_null_check(trace_class->user_attributes);
}

void bt_trace_class_get_ref(const struct bt_trace_class *trace_class)
{
	bt_object_get_ref(trace_class);
}

void bt_trace_class_put_ref(const struct bt_trace_class *trace_class)
{
	bt_object_put_ref(trace_class);
}
Commit	Line	Data
10b7a2e4	1	/*
f2b0325d	2	* Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
10b7a2e4 PP	3	* Copyright 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
10b7a2e4 PP	4	*
10b7a2e4 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
d693f28a	24	#define BT_LOG_TAG "LIB/TRACE-CLASS"
1633ef46	25	#include "lib/logging.h"
10b7a2e4	26
57952005	27	#include "lib/assert-pre.h"
727170fc	28	#include "lib/assert-post.h"
71c5da58 MJ	29	#include <babeltrace2/trace-ir/trace-class.h>
71c5da58 MJ	30	#include <babeltrace2/trace-ir/trace-class-const.h>
71c5da58	31	#include <babeltrace2/trace-ir/event-class.h>
57952005 MJ	32	#include "ctf-writer/functor.h"
	33	#include "ctf-writer/clock.h"
	34	#include "compat/compiler.h"
71c5da58 MJ	35	#include <babeltrace2/value.h>
71c5da58 MJ	36	#include <babeltrace2/value-const.h>
57952005	37	#include "lib/value.h"
71c5da58	38	#include <babeltrace2/types.h>
57952005 MJ	39	#include "compat/endian.h"
	40	#include "common/assert.h"
	41	#include "compat/glib.h"
10b7a2e4 PP	42	#include <inttypes.h>
	43	#include <stdint.h>
	44	#include <string.h>
	45	#include <stdlib.h>
	46
57952005 MJ	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"
af90138b	57	#include "lib/value.h"
fb25b9e3	58	#include "lib/func-status.h"
57952005	59
1122415c FD	60	struct bt_trace_class_destruction_listener_elem {
	61	bt_trace_class_destruction_listener_func func;
	62	void *data;
	63	};
	64
fa6cfec3 PP	65	#define BT_ASSERT_PRE_DEV_TRACE_CLASS_HOT(_tc) \
fa6cfec3 PP	66	BT_ASSERT_PRE_DEV_HOT((_tc), "Trace class", ": %!+T", (_tc))
10b7a2e4 PP	67
	68	static
	69	void destroy_trace_class(struct bt_object *obj)
	70	{
	71	struct bt_trace_class tc = (void ) obj;
	72
	73	BT_LIB_LOGD("Destroying trace class object: %!+T", tc);
af90138b PP	74	BT_OBJECT_PUT_REF_AND_RESET(tc->user_attributes);
af90138b PP	75
1122415c FD	76	/*
	77	* Call destruction listener functions so that everything else
	78	* still exists in the trace class.
	79	*/
	80	if (tc->destruction_listeners) {
	81	uint64_t i;
a684a357	82	BT_LIB_LOGD("Calling trace class destruction listener(s): %!+T", tc);
69868f44 SM	83
	84	/*
	85	* The trace class' reference count is 0 if we're here. Increment
	86	* it to avoid a double-destroy (possibly infinitely recursive).
	87	* This could happen for example if a destruction listener did
	88	* bt_object_get_ref() (or anything that causes
	89	* bt_object_get_ref() to be called) on the trace class (ref.
	90	* count goes from 0 to 1), and then bt_object_put_ref(): the
	91	* reference count would go from 1 to 0 again and this function
	92	* would be called again.
	93	*/
	94	tc->base.ref_count++;
	95
1122415c FD	96	/* Call all the trace class destruction listeners */
	97	for (i = 0; i < tc->destruction_listeners->len; i++) {
	98	struct bt_trace_class_destruction_listener_elem elem =
	99	g_array_index(tc->destruction_listeners,
	100	struct bt_trace_class_destruction_listener_elem, i);
	101
	102	if (elem.func) {
	103	elem.func(tc, elem.data);
	104	}
69868f44 SM	105
	106	/*
	107	* The destruction listener should not have kept a
	108	* reference to the trace class.
	109	*/
727170fc	110	BT_ASSERT_POST(tc->base.ref_count == 1, "Destruction listener kept a reference to the trace class being destroyed: %![tc-]+T", tc);
1122415c FD	111	}
	112	g_array_free(tc->destruction_listeners, TRUE);
	113	tc->destruction_listeners = NULL;
	114	}
10b7a2e4	115
10b7a2e4 PP	116	if (tc->stream_classes) {
	117	BT_LOGD_STR("Destroying stream classes.");
	118	g_ptr_array_free(tc->stream_classes, TRUE);
	119	tc->stream_classes = NULL;
	120	}
	121
10b7a2e4 PP	122	g_free(tc);
	123	}
	124
e5e71bf8	125	struct bt_trace_class bt_trace_class_create(bt_self_component self_comp)
10b7a2e4 PP	126	{
10b7a2e4 PP	127	struct bt_trace_class *tc = NULL;
10b7a2e4	128
e5e71bf8	129	BT_ASSERT_PRE_NON_NULL(self_comp, "Self component");
10b7a2e4 PP	130	BT_LOGD_STR("Creating default trace class object.");
	131	tc = g_new0(struct bt_trace_class, 1);
	132	if (!tc) {
a8f90e5d	133	BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one trace class.");
10b7a2e4 PP	134	goto error;
	135	}
	136
	137	bt_object_init_shared_with_parent(&tc->base, destroy_trace_class);
af90138b PP	138	tc->user_attributes = bt_value_map_create();
	139	if (!tc->user_attributes) {
	140	BT_LIB_LOGE_APPEND_CAUSE(
	141	"Failed to create a map value object.");
	142	goto error;
	143	}
10b7a2e4 PP	144
	145	tc->stream_classes = g_ptr_array_new_with_free_func(
	146	(GDestroyNotify) bt_object_try_spec_release);
	147	if (!tc->stream_classes) {
a8f90e5d	148	BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one GPtrArray.");
10b7a2e4 PP	149	goto error;
	150	}
	151
1122415c FD	152	tc->destruction_listeners = g_array_new(FALSE, TRUE,
	153	sizeof(struct bt_trace_class_destruction_listener_elem));
	154	if (!tc->destruction_listeners) {
a8f90e5d	155	BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one GArray.");
1122415c FD	156	goto error;
	157	}
	158
10b7a2e4	159	tc->assigns_automatic_stream_class_id = true;
10b7a2e4 PP	160	BT_LIB_LOGD("Created trace class object: %!+T", tc);
	161	goto end;
	162
	163	error:
	164	BT_OBJECT_PUT_REF_AND_RESET(tc);
	165
	166	end:
	167	return tc;
	168	}
	169
fb25b9e3	170	enum bt_trace_class_add_listener_status bt_trace_class_add_destruction_listener(
1122415c FD	171	const struct bt_trace_class *_tc,
1122415c FD	172	bt_trace_class_destruction_listener_func listener,
eba7ea21	173	void data, bt_listener_id listener_id)
1122415c FD	174	{
	175	struct bt_trace_class tc = (void ) _tc;
	176	uint64_t i;
	177	struct bt_trace_class_destruction_listener_elem new_elem = {
	178	.func = listener,
	179	.data = data,
	180	};
	181
	182	BT_ASSERT_PRE_NON_NULL(tc, "Trace class");
	183	BT_ASSERT_PRE_NON_NULL(listener, "Listener");
	184
	185	/* Find the next available spot */
	186	for (i = 0; i < tc->destruction_listeners->len; i++) {
	187	struct bt_trace_class_destruction_listener_elem elem =
	188	g_array_index(tc->destruction_listeners,
	189	struct bt_trace_class_destruction_listener_elem, i);
	190
	191	if (!elem.func) {
	192	break;
	193	}
	194	}
	195
	196	if (i == tc->destruction_listeners->len) {
	197	g_array_append_val(tc->destruction_listeners, new_elem);
	198	} else {
	199	g_array_insert_val(tc->destruction_listeners, i, new_elem);
	200	}
	201
	202	if (listener_id) {
	203	*listener_id = i;
	204	}
	205
a684a357	206	BT_LIB_LOGD("Added trace class destruction listener: %![tc-]+T, "
1122415c	207	"listener-id=%" PRIu64, tc, i);
fb25b9e3	208	return BT_FUNC_STATUS_OK;
1122415c FD	209	}
1122415c FD	210
1122415c FD	211	static
	212	bool has_listener_id(const struct bt_trace_class *tc, uint64_t listener_id)
	213	{
	214	BT_ASSERT(listener_id < tc->destruction_listeners->len);
	215	return (&g_array_index(tc->destruction_listeners,
	216	struct bt_trace_class_destruction_listener_elem,
8e01f2d9	217	listener_id))->func;
1122415c FD	218	}
1122415c FD	219
fb25b9e3	220	enum bt_trace_class_remove_listener_status bt_trace_class_remove_destruction_listener(
eba7ea21	221	const struct bt_trace_class *_tc, bt_listener_id listener_id)
1122415c FD	222	{
	223	struct bt_trace_class tc = (void ) _tc;
	224	struct bt_trace_class_destruction_listener_elem *elem;
	225
	226	BT_ASSERT_PRE_NON_NULL(tc, "Trace class");
	227	BT_ASSERT_PRE(has_listener_id(tc, listener_id),
	228	"Trace class has no such trace class destruction listener ID: "
	229	"%![tc-]+T, %" PRIu64, tc, listener_id);
	230	elem = &g_array_index(tc->destruction_listeners,
	231	struct bt_trace_class_destruction_listener_elem,
	232	listener_id);
	233	BT_ASSERT(elem->func);
	234
	235	elem->func = NULL;
	236	elem->data = NULL;
a684a357	237	BT_LIB_LOGD("Removed trace class destruction listener: "
1122415c FD	238	"%![tc-]+T, listener-id=%" PRIu64,
1122415c FD	239	tc, listener_id);
fb25b9e3	240	return BT_FUNC_STATUS_OK;
1122415c FD	241	}
1122415c FD	242
10b7a2e4 PP	243	uint64_t bt_trace_class_get_stream_class_count(const struct bt_trace_class *tc)
10b7a2e4 PP	244	{
fa6cfec3	245	BT_ASSERT_PRE_DEV_NON_NULL(tc, "Trace class");
10b7a2e4 PP	246	return (uint64_t) tc->stream_classes->len;
	247	}
	248
	249	struct bt_stream_class *bt_trace_class_borrow_stream_class_by_index(
	250	struct bt_trace_class *tc, uint64_t index)
	251	{
fa6cfec3 PP	252	BT_ASSERT_PRE_DEV_NON_NULL(tc, "Trace class");
fa6cfec3 PP	253	BT_ASSERT_PRE_DEV_VALID_INDEX(index, tc->stream_classes->len);
10b7a2e4 PP	254	return g_ptr_array_index(tc->stream_classes, index);
	255	}
	256
	257	const struct bt_stream_class *
	258	bt_trace_class_borrow_stream_class_by_index_const(
	259	const struct bt_trace_class *tc, uint64_t index)
	260	{
	261	return bt_trace_class_borrow_stream_class_by_index(
	262	(void *) tc, index);
	263	}
	264
	265	struct bt_stream_class *bt_trace_class_borrow_stream_class_by_id(
	266	struct bt_trace_class *tc, uint64_t id)
	267	{
	268	struct bt_stream_class *stream_class = NULL;
	269	uint64_t i;
	270
fa6cfec3	271	BT_ASSERT_PRE_DEV_NON_NULL(tc, "Trace class");
10b7a2e4 PP	272
	273	for (i = 0; i < tc->stream_classes->len; i++) {
	274	struct bt_stream_class *stream_class_candidate =
	275	g_ptr_array_index(tc->stream_classes, i);
	276
	277	if (stream_class_candidate->id == id) {
	278	stream_class = stream_class_candidate;
	279	goto end;
	280	}
	281	}
	282
	283	end:
	284	return stream_class;
	285	}
	286
	287	const struct bt_stream_class *
	288	bt_trace_class_borrow_stream_class_by_id_const(
	289	const struct bt_trace_class *tc, uint64_t id)
	290	{
	291	return bt_trace_class_borrow_stream_class_by_id((void *) tc, id);
	292	}
	293
10b7a2e4 PP	294	BT_HIDDEN
	295	void _bt_trace_class_freeze(const struct bt_trace_class *tc)
	296	{
10b7a2e4 PP	297	BT_ASSERT(tc);
	298	BT_LIB_LOGD("Freezing trace class: %!+T", tc);
	299	((struct bt_trace_class *) tc)->frozen = true;
	300	}
	301
	302	bt_bool bt_trace_class_assigns_automatic_stream_class_id(const struct bt_trace_class *tc)
	303	{
fa6cfec3	304	BT_ASSERT_PRE_DEV_NON_NULL(tc, "Trace class");
10b7a2e4 PP	305	return (bt_bool) tc->assigns_automatic_stream_class_id;
	306	}
	307
	308	void bt_trace_class_set_assigns_automatic_stream_class_id(struct bt_trace_class *tc,
	309	bt_bool value)
	310	{
	311	BT_ASSERT_PRE_NON_NULL(tc, "Trace class");
fa6cfec3	312	BT_ASSERT_PRE_DEV_TRACE_CLASS_HOT(tc);
10b7a2e4	313	tc->assigns_automatic_stream_class_id = (bool) value;
a684a357	314	BT_LIB_LOGD("Set trace class's automatic stream class ID "
10b7a2e4 PP	315	"assignment property: %!+T", tc);
10b7a2e4 PP	316	}
8c6884d9	317
af90138b PP	318	const struct bt_value *bt_trace_class_borrow_user_attributes_const(
	319	const struct bt_trace_class *trace_class)
	320	{
	321	BT_ASSERT_PRE_DEV_NON_NULL(trace_class, "Trace class");
	322	return trace_class->user_attributes;
	323	}
	324
	325	struct bt_value *bt_trace_class_borrow_user_attributes(
	326	struct bt_trace_class *trace_class)
	327	{
	328	return (void *) bt_trace_class_borrow_user_attributes_const(
	329	(void *) trace_class);
	330	}
	331
	332	void bt_trace_class_set_user_attributes(struct bt_trace_class *trace_class,
	333	const struct bt_value *user_attributes)
	334	{
	335	BT_ASSERT_PRE_NON_NULL(trace_class, "Trace class");
	336	BT_ASSERT_PRE_NON_NULL(user_attributes, "User attributes");
	337	BT_ASSERT_PRE(user_attributes->type == BT_VALUE_TYPE_MAP,
	338	"User attributes object is not a map value object.");
	339	BT_ASSERT_PRE_DEV_TRACE_CLASS_HOT(trace_class);
864aa43f	340	bt_object_put_ref_no_null_check(trace_class->user_attributes);
af90138b	341	trace_class->user_attributes = (void *) user_attributes;
864aa43f	342	bt_object_get_ref_no_null_check(trace_class->user_attributes);
af90138b PP	343	}
af90138b PP	344
8c6884d9 PP	345	void bt_trace_class_get_ref(const struct bt_trace_class *trace_class)
	346	{
	347	bt_object_get_ref(trace_class);
	348	}
	349
	350	void bt_trace_class_put_ref(const struct bt_trace_class *trace_class)
	351	{
	352	bt_object_put_ref(trace_class);
	353	}