[babeltrace.git] / lib / ctf-writer / attributes.c

/*
 * attributes.c
 *
 * Babeltrace CTF writer - Attributes
 *
 * Copyright (c) 2015 EfficiOS Inc. and Linux Foundation
 * Copyright (c) 2015 Philippe Proulx <pproulx@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 "CTF-WRITER-ATTRS"
#include <babeltrace/lib-logging-internal.h>

#include <babeltrace/assert-internal.h>
#include <babeltrace/babeltrace-internal.h>
#include <babeltrace/compat/string-internal.h>
#include <babeltrace/ctf-writer/object.h>
#include <babeltrace/ctf-writer/values-internal.h>
#include <babeltrace/ctf-writer/values-internal.h>
#include <babeltrace/ctf-writer/values-internal.h>
#include <inttypes.h>

#define BT_CTF_ATTR_NAME_INDEX		0
#define BT_CTF_ATTR_VALUE_INDEX		1

BT_HIDDEN
struct bt_ctf_private_value *bt_ctf_attributes_create(void)
{
	struct bt_ctf_private_value *attr_obj;

	/*
	 * Attributes: array value object of array value objects, each one
	 * containing two entries: a string value object (attributes
	 * field name), and a value object (attributes field value).
	 *
	 * Example (JSON representation):
	 *
	 *     [
	 *         ["hostname", "eeppdesk"],
	 *         ["sysname", "Linux"],
	 *         ["tracer_major", 2],
	 *         ["tracer_minor", 5]
	 *     ]
	 */
	BT_LOGD_STR("Creating attributes object.");
	attr_obj = bt_ctf_private_value_array_create();
	if (!attr_obj) {
		BT_LOGE_STR("Failed to create array value.");
	} else {
		BT_LOGD("Created attributes object: addr=%p",
			attr_obj);
	}

	return attr_obj;
}

BT_HIDDEN
void bt_ctf_attributes_destroy(struct bt_ctf_private_value *attr_obj)
{
	BT_LOGD("Destroying attributes object: addr=%p", attr_obj);
	bt_ctf_object_put_ref(attr_obj);
}

BT_HIDDEN
int64_t bt_ctf_attributes_get_count(struct bt_ctf_private_value *attr_obj)
{
	return bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj));
}

BT_HIDDEN
const char *bt_ctf_attributes_get_field_name(struct bt_ctf_private_value *attr_obj,
		uint64_t index)
{
	const char *ret = NULL;
	struct bt_ctf_private_value *attr_field_obj = NULL;
	struct bt_ctf_private_value *attr_field_name_obj = NULL;

	if (!attr_obj) {
		BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
		goto end;
	}

	if (index >= bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj))) {
		BT_LOGW("Invalid parameter: index is out of bounds: "
			"index=%" PRIu64 ", count=%" PRId64,
			index, bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj)));
		goto end;
	}

	attr_field_obj = bt_ctf_private_value_array_borrow_element_by_index(
		attr_obj, index);
	if (!attr_field_obj) {
		BT_LOGE("Cannot get attributes object's array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_obj, index);
		goto end;
	}

	attr_field_name_obj =
		bt_ctf_private_value_array_borrow_element_by_index(
			attr_field_obj, BT_CTF_ATTR_NAME_INDEX);
	if (!attr_field_name_obj) {
		BT_LOGE("Cannot get attribute array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_field_obj,
			(uint64_t) BT_CTF_ATTR_NAME_INDEX);
		goto end;
	}

	ret = bt_ctf_value_string_get(
		bt_ctf_private_value_as_value(attr_field_name_obj));

end:
	return ret;
}

BT_HIDDEN
struct bt_ctf_private_value *bt_ctf_attributes_borrow_field_value(struct bt_ctf_private_value *attr_obj,
		uint64_t index)
{
	struct bt_ctf_private_value *value_obj = NULL;
	struct bt_ctf_private_value *attr_field_obj = NULL;

	if (!attr_obj) {
		BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
		goto end;
	}

	if (index >= bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj))) {
		BT_LOGW("Invalid parameter: index is out of bounds: "
			"index=%" PRIu64 ", count=%" PRId64,
			index, bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj)));
		goto end;
	}

	attr_field_obj = bt_ctf_private_value_array_borrow_element_by_index(
		attr_obj, index);
	if (!attr_field_obj) {
		BT_LOGE("Cannot get attributes object's array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_obj, index);
		goto end;
	}

	value_obj = bt_ctf_private_value_array_borrow_element_by_index(attr_field_obj,
		BT_CTF_ATTR_VALUE_INDEX);
	if (!value_obj) {
		BT_LOGE("Cannot get attribute array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_field_obj,
			(uint64_t) BT_CTF_ATTR_VALUE_INDEX);
	}

end:
	return value_obj;
}

static
struct bt_ctf_private_value *bt_ctf_attributes_borrow_field_by_name(
		struct bt_ctf_private_value *attr_obj, const char *name)
{
	uint64_t i;
	int64_t attr_size;
	struct bt_ctf_private_value *value_obj = NULL;
	struct bt_ctf_private_value *attr_field_name_obj = NULL;

	attr_size = bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj));
	if (attr_size < 0) {
		BT_LOGE("Cannot get array value's size: value-addr=%p",
			attr_obj);
		goto error;
	}

	for (i = 0; i < attr_size; ++i) {
		const char *field_name;

		value_obj = bt_ctf_private_value_array_borrow_element_by_index(attr_obj, i);
		if (!value_obj) {
			BT_LOGE("Cannot get attributes object's array value's element by index: "
				"value-addr=%p, index=%" PRIu64, attr_obj, i);
			goto error;
		}

		attr_field_name_obj = bt_ctf_private_value_array_borrow_element_by_index(value_obj,
			BT_CTF_ATTR_NAME_INDEX);
		if (!attr_field_name_obj) {
			BT_LOGE("Cannot get attribute array value's element by index: "
				"value-addr=%p, index=%" PRIu64,
				value_obj, (int64_t) BT_CTF_ATTR_NAME_INDEX);
			goto error;
		}

		field_name = bt_ctf_value_string_get(
			bt_ctf_private_value_as_value(attr_field_name_obj));

		if (!strcmp(field_name, name)) {
			break;
		}

		value_obj = NULL;
	}

	return value_obj;

error:
	value_obj = NULL;
	return value_obj;
}

BT_HIDDEN
int bt_ctf_attributes_set_field_value(struct bt_ctf_private_value *attr_obj,
		const char *name, struct bt_ctf_private_value *value_obj)
{
	int ret = 0;
	struct bt_ctf_private_value *attr_field_obj = NULL;

	if (!attr_obj || !name || !value_obj) {
		BT_LOGW("Invalid parameter: attributes object, name, or value object is NULL: "
			"attr-value-addr=%p, name-addr=%p, value-addr=%p",
			attr_obj, name, value_obj);
		ret = -1;
		goto end;
	}

	attr_field_obj = bt_ctf_attributes_borrow_field_by_name(attr_obj, name);
	if (attr_field_obj) {
		ret = bt_ctf_private_value_array_set_element_by_index(
			attr_field_obj, BT_CTF_ATTR_VALUE_INDEX,
			bt_ctf_private_value_as_value(value_obj));
		attr_field_obj = NULL;
		goto end;
	}

	attr_field_obj = bt_ctf_private_value_array_create();
	if (!attr_field_obj) {
		BT_LOGE_STR("Failed to create empty array value.");
		ret = -1;
		goto end;
	}

	ret = bt_ctf_private_value_array_append_string_element(attr_field_obj, name);
	ret |= bt_ctf_private_value_array_append_element(attr_field_obj,
		bt_ctf_private_value_as_value(value_obj));
	if (ret) {
		BT_LOGE("Cannot append elements to array value: addr=%p",
			attr_field_obj);
		goto end;
	}

	ret = bt_ctf_private_value_array_append_element(attr_obj,
		bt_ctf_private_value_as_value(attr_field_obj));
	if (ret) {
		BT_LOGE("Cannot append element to array value: "
			"array-value-addr=%p, element-value-addr=%p",
			attr_obj, attr_field_obj);
	}

end:
	bt_ctf_object_put_ref(attr_field_obj);
	return ret;
}

BT_HIDDEN
struct bt_ctf_private_value *bt_ctf_attributes_borrow_field_value_by_name(
		struct bt_ctf_private_value *attr_obj, const char *name)
{
	struct bt_ctf_private_value *value_obj = NULL;
	struct bt_ctf_private_value *attr_field_obj = NULL;

	if (!attr_obj || !name) {
		BT_LOGW("Invalid parameter: attributes object or name is NULL: "
			"value-addr=%p, name-addr=%p", attr_obj, name);
		goto end;
	}

	attr_field_obj = bt_ctf_attributes_borrow_field_by_name(attr_obj, name);
	if (!attr_field_obj) {
		BT_LOGD("Cannot find attributes object's field by name: "
			"value-addr=%p, name=\"%s\"", attr_obj, name);
		goto end;
	}

	value_obj = bt_ctf_private_value_array_borrow_element_by_index(attr_field_obj,
		BT_CTF_ATTR_VALUE_INDEX);
	if (!value_obj) {
		BT_LOGE("Cannot get attribute array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_field_obj,
			(uint64_t) BT_CTF_ATTR_VALUE_INDEX);
	}

end:
	return value_obj;
}

BT_HIDDEN
int bt_ctf_attributes_freeze(struct bt_ctf_private_value *attr_obj)
{
	uint64_t i;
	int64_t count;
	int ret = 0;

	if (!attr_obj) {
		BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
		ret = -1;
		goto end;
	}

	BT_LOGD("Freezing attributes object: value-addr=%p", attr_obj);
	count = bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj));
	BT_ASSERT(count >= 0);

	/*
	 * We do not freeze the array value object itself here, since
	 * internal stuff could need to modify/add attributes. Each
	 * attribute is frozen one by one.
	 */
	for (i = 0; i < count; ++i) {
		struct bt_ctf_private_value *obj = NULL;

		obj = bt_ctf_attributes_borrow_field_value(attr_obj, i);
		if (!obj) {
			BT_LOGE("Cannot get attributes object's field value by index: "
				"value-addr=%p, index=%" PRIu64,
				attr_obj, i);
			ret = -1;
			goto end;
		}

		bt_ctf_value_freeze(bt_ctf_private_value_as_value(obj));
	}

end:
	return ret;
}
Commit	Line	Data
16ca5ff0 PP	1	/*
	2	* attributes.c
	3	*
	4	* Babeltrace CTF writer - Attributes
	5	*
	6	* Copyright (c) 2015 EfficiOS Inc. and Linux Foundation
	7	* Copyright (c) 2015 Philippe Proulx <pproulx@efficios.com>
	8	*
	9	* Permission is hereby granted, free of charge, to any person obtaining a copy
	10	* of this software and associated documentation files (the "Software"), to deal
	11	* in the Software without restriction, including without limitation the rights
	12	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	13	* copies of the Software, and to permit persons to whom the Software is
	14	* furnished to do so, subject to the following conditions:
	15	*
	16	* The above copyright notice and this permission notice shall be included in
	17	* all copies or substantial portions of the Software.
	18	*
	19	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	20	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	21	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	22	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	23	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	24	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	25	* SOFTWARE.
	26	*/
	27
	28	#define BT_LOG_TAG "CTF-WRITER-ATTRS"
	29	#include <babeltrace/lib-logging-internal.h>
	30
	31	#include <babeltrace/assert-internal.h>
	32	#include <babeltrace/babeltrace-internal.h>
	33	#include <babeltrace/compat/string-internal.h>
e1e02a22 PP	34	#include <babeltrace/ctf-writer/object.h>
	35	#include <babeltrace/ctf-writer/values-internal.h>
	36	#include <babeltrace/ctf-writer/values-internal.h>
	37	#include <babeltrace/ctf-writer/values-internal.h>
16ca5ff0 PP	38	#include <inttypes.h>
	39
	40	#define BT_CTF_ATTR_NAME_INDEX 0
	41	#define BT_CTF_ATTR_VALUE_INDEX 1
	42
	43	BT_HIDDEN
e1e02a22	44	struct bt_ctf_private_value *bt_ctf_attributes_create(void)
16ca5ff0	45	{
e1e02a22	46	struct bt_ctf_private_value *attr_obj;
16ca5ff0 PP	47
	48	/*
	49	* Attributes: array value object of array value objects, each one
	50	* containing two entries: a string value object (attributes
	51	* field name), and a value object (attributes field value).
	52	*
	53	* Example (JSON representation):
	54	*
	55	* [
	56	* ["hostname", "eeppdesk"],
	57	* ["sysname", "Linux"],
	58	* ["tracer_major", 2],
	59	* ["tracer_minor", 5]
	60	* ]
	61	*/
	62	BT_LOGD_STR("Creating attributes object.");
e1e02a22	63	attr_obj = bt_ctf_private_value_array_create();
16ca5ff0 PP	64	if (!attr_obj) {
	65	BT_LOGE_STR("Failed to create array value.");
	66	} else {
	67	BT_LOGD("Created attributes object: addr=%p",
	68	attr_obj);
	69	}
	70
	71	return attr_obj;
	72	}
	73
	74	BT_HIDDEN
e1e02a22	75	void bt_ctf_attributes_destroy(struct bt_ctf_private_value *attr_obj)
16ca5ff0 PP	76	{
16ca5ff0 PP	77	BT_LOGD("Destroying attributes object: addr=%p", attr_obj);
e1e02a22	78	bt_ctf_object_put_ref(attr_obj);
16ca5ff0 PP	79	}
	80
	81	BT_HIDDEN
e1e02a22	82	int64_t bt_ctf_attributes_get_count(struct bt_ctf_private_value *attr_obj)
16ca5ff0	83	{
e1e02a22	84	return bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj));
16ca5ff0 PP	85	}
	86
	87	BT_HIDDEN
e1e02a22	88	const char bt_ctf_attributes_get_field_name(struct bt_ctf_private_value attr_obj,
16ca5ff0 PP	89	uint64_t index)
16ca5ff0 PP	90	{
16ca5ff0	91	const char *ret = NULL;
e1e02a22 PP	92	struct bt_ctf_private_value *attr_field_obj = NULL;
e1e02a22 PP	93	struct bt_ctf_private_value *attr_field_name_obj = NULL;
16ca5ff0 PP	94
	95	if (!attr_obj) {
	96	BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
	97	goto end;
	98	}
	99
e1e02a22	100	if (index >= bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj))) {
16ca5ff0 PP	101	BT_LOGW("Invalid parameter: index is out of bounds: "
16ca5ff0 PP	102	"index=%" PRIu64 ", count=%" PRId64,
e1e02a22	103	index, bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj)));
16ca5ff0 PP	104	goto end;
	105	}
	106
e1e02a22	107	attr_field_obj = bt_ctf_private_value_array_borrow_element_by_index(
da91b29a	108	attr_obj, index);
16ca5ff0 PP	109	if (!attr_field_obj) {
	110	BT_LOGE("Cannot get attributes object's array value's element by index: "
	111	"value-addr=%p, index=%" PRIu64, attr_obj, index);
	112	goto end;
	113	}
	114
da91b29a	115	attr_field_name_obj =
e1e02a22	116	bt_ctf_private_value_array_borrow_element_by_index(
da91b29a	117	attr_field_obj, BT_CTF_ATTR_NAME_INDEX);
16ca5ff0 PP	118	if (!attr_field_name_obj) {
	119	BT_LOGE("Cannot get attribute array value's element by index: "
	120	"value-addr=%p, index=%" PRIu64, attr_field_obj,
	121	(uint64_t) BT_CTF_ATTR_NAME_INDEX);
	122	goto end;
	123	}
	124
e1e02a22 PP	125	ret = bt_ctf_value_string_get(
e1e02a22 PP	126	bt_ctf_private_value_as_value(attr_field_name_obj));
16ca5ff0 PP	127
	128	end:
	129	return ret;
	130	}
	131
	132	BT_HIDDEN
e1e02a22	133	struct bt_ctf_private_value bt_ctf_attributes_borrow_field_value(struct bt_ctf_private_value attr_obj,
16ca5ff0 PP	134	uint64_t index)
16ca5ff0 PP	135	{
e1e02a22 PP	136	struct bt_ctf_private_value *value_obj = NULL;
e1e02a22 PP	137	struct bt_ctf_private_value *attr_field_obj = NULL;
16ca5ff0 PP	138
	139	if (!attr_obj) {
	140	BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
	141	goto end;
	142	}
	143
e1e02a22	144	if (index >= bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj))) {
16ca5ff0 PP	145	BT_LOGW("Invalid parameter: index is out of bounds: "
16ca5ff0 PP	146	"index=%" PRIu64 ", count=%" PRId64,
e1e02a22	147	index, bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj)));
16ca5ff0 PP	148	goto end;
	149	}
	150
e1e02a22	151	attr_field_obj = bt_ctf_private_value_array_borrow_element_by_index(
da91b29a	152	attr_obj, index);
16ca5ff0 PP	153	if (!attr_field_obj) {
	154	BT_LOGE("Cannot get attributes object's array value's element by index: "
	155	"value-addr=%p, index=%" PRIu64, attr_obj, index);
	156	goto end;
	157	}
	158
e1e02a22	159	value_obj = bt_ctf_private_value_array_borrow_element_by_index(attr_field_obj,
16ca5ff0 PP	160	BT_CTF_ATTR_VALUE_INDEX);
	161	if (!value_obj) {
	162	BT_LOGE("Cannot get attribute array value's element by index: "
	163	"value-addr=%p, index=%" PRIu64, attr_field_obj,
	164	(uint64_t) BT_CTF_ATTR_VALUE_INDEX);
	165	}
	166
	167	end:
	168	return value_obj;
	169	}
	170
	171	static
e1e02a22 PP	172	struct bt_ctf_private_value *bt_ctf_attributes_borrow_field_by_name(
e1e02a22 PP	173	struct bt_ctf_private_value attr_obj, const char name)
16ca5ff0 PP	174	{
	175	uint64_t i;
	176	int64_t attr_size;
e1e02a22 PP	177	struct bt_ctf_private_value *value_obj = NULL;
e1e02a22 PP	178	struct bt_ctf_private_value *attr_field_name_obj = NULL;
16ca5ff0	179
e1e02a22	180	attr_size = bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj));
16ca5ff0 PP	181	if (attr_size < 0) {
	182	BT_LOGE("Cannot get array value's size: value-addr=%p",
	183	attr_obj);
	184	goto error;
	185	}
	186
	187	for (i = 0; i < attr_size; ++i) {
16ca5ff0 PP	188	const char *field_name;
16ca5ff0 PP	189
e1e02a22	190	value_obj = bt_ctf_private_value_array_borrow_element_by_index(attr_obj, i);
16ca5ff0 PP	191	if (!value_obj) {
	192	BT_LOGE("Cannot get attributes object's array value's element by index: "
	193	"value-addr=%p, index=%" PRIu64, attr_obj, i);
	194	goto error;
	195	}
	196
e1e02a22	197	attr_field_name_obj = bt_ctf_private_value_array_borrow_element_by_index(value_obj,
16ca5ff0 PP	198	BT_CTF_ATTR_NAME_INDEX);
	199	if (!attr_field_name_obj) {
	200	BT_LOGE("Cannot get attribute array value's element by index: "
	201	"value-addr=%p, index=%" PRIu64,
	202	value_obj, (int64_t) BT_CTF_ATTR_NAME_INDEX);
	203	goto error;
	204	}
	205
e1e02a22 PP	206	field_name = bt_ctf_value_string_get(
e1e02a22 PP	207	bt_ctf_private_value_as_value(attr_field_name_obj));
16ca5ff0 PP	208
	209	if (!strcmp(field_name, name)) {
	210	break;
	211	}
	212
	213	value_obj = NULL;
	214	}
	215
	216	return value_obj;
	217
	218	error:
	219	value_obj = NULL;
	220	return value_obj;
	221	}
	222
	223	BT_HIDDEN
e1e02a22 PP	224	int bt_ctf_attributes_set_field_value(struct bt_ctf_private_value *attr_obj,
e1e02a22 PP	225	const char name, struct bt_ctf_private_value value_obj)
16ca5ff0 PP	226	{
16ca5ff0 PP	227	int ret = 0;
e1e02a22	228	struct bt_ctf_private_value *attr_field_obj = NULL;
16ca5ff0 PP	229
	230	if (!attr_obj \|\| !name \|\| !value_obj) {
	231	BT_LOGW("Invalid parameter: attributes object, name, or value object is NULL: "
	232	"attr-value-addr=%p, name-addr=%p, value-addr=%p",
	233	attr_obj, name, value_obj);
	234	ret = -1;
	235	goto end;
	236	}
	237
	238	attr_field_obj = bt_ctf_attributes_borrow_field_by_name(attr_obj, name);
	239	if (attr_field_obj) {
e1e02a22	240	ret = bt_ctf_private_value_array_set_element_by_index(
da91b29a	241	attr_field_obj, BT_CTF_ATTR_VALUE_INDEX,
e1e02a22	242	bt_ctf_private_value_as_value(value_obj));
16ca5ff0 PP	243	attr_field_obj = NULL;
	244	goto end;
	245	}
	246
e1e02a22	247	attr_field_obj = bt_ctf_private_value_array_create();
16ca5ff0 PP	248	if (!attr_field_obj) {
	249	BT_LOGE_STR("Failed to create empty array value.");
	250	ret = -1;
	251	goto end;
	252	}
	253
e1e02a22 PP	254	ret = bt_ctf_private_value_array_append_string_element(attr_field_obj, name);
	255	ret \|= bt_ctf_private_value_array_append_element(attr_field_obj,
	256	bt_ctf_private_value_as_value(value_obj));
16ca5ff0 PP	257	if (ret) {
	258	BT_LOGE("Cannot append elements to array value: addr=%p",
	259	attr_field_obj);
	260	goto end;
	261	}
	262
e1e02a22 PP	263	ret = bt_ctf_private_value_array_append_element(attr_obj,
e1e02a22 PP	264	bt_ctf_private_value_as_value(attr_field_obj));
16ca5ff0 PP	265	if (ret) {
	266	BT_LOGE("Cannot append element to array value: "
	267	"array-value-addr=%p, element-value-addr=%p",
	268	attr_obj, attr_field_obj);
	269	}
	270
	271	end:
e1e02a22	272	bt_ctf_object_put_ref(attr_field_obj);
16ca5ff0 PP	273	return ret;
	274	}
	275
	276	BT_HIDDEN
e1e02a22 PP	277	struct bt_ctf_private_value *bt_ctf_attributes_borrow_field_value_by_name(
e1e02a22 PP	278	struct bt_ctf_private_value attr_obj, const char name)
16ca5ff0	279	{
e1e02a22 PP	280	struct bt_ctf_private_value *value_obj = NULL;
e1e02a22 PP	281	struct bt_ctf_private_value *attr_field_obj = NULL;
16ca5ff0 PP	282
	283	if (!attr_obj \|\| !name) {
	284	BT_LOGW("Invalid parameter: attributes object or name is NULL: "
	285	"value-addr=%p, name-addr=%p", attr_obj, name);
	286	goto end;
	287	}
	288
	289	attr_field_obj = bt_ctf_attributes_borrow_field_by_name(attr_obj, name);
	290	if (!attr_field_obj) {
	291	BT_LOGD("Cannot find attributes object's field by name: "
	292	"value-addr=%p, name=\"%s\"", attr_obj, name);
	293	goto end;
	294	}
	295
e1e02a22	296	value_obj = bt_ctf_private_value_array_borrow_element_by_index(attr_field_obj,
16ca5ff0 PP	297	BT_CTF_ATTR_VALUE_INDEX);
	298	if (!value_obj) {
	299	BT_LOGE("Cannot get attribute array value's element by index: "
	300	"value-addr=%p, index=%" PRIu64, attr_field_obj,
	301	(uint64_t) BT_CTF_ATTR_VALUE_INDEX);
	302	}
	303
	304	end:
	305	return value_obj;
	306	}
	307
	308	BT_HIDDEN
e1e02a22	309	int bt_ctf_attributes_freeze(struct bt_ctf_private_value *attr_obj)
16ca5ff0 PP	310	{
	311	uint64_t i;
	312	int64_t count;
	313	int ret = 0;
	314
	315	if (!attr_obj) {
	316	BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
	317	ret = -1;
	318	goto end;
	319	}
	320
	321	BT_LOGD("Freezing attributes object: value-addr=%p", attr_obj);
e1e02a22	322	count = bt_ctf_value_array_get_size(bt_ctf_private_value_as_value(attr_obj));
16ca5ff0 PP	323	BT_ASSERT(count >= 0);
	324
	325	/*
	326	* We do not freeze the array value object itself here, since
	327	* internal stuff could need to modify/add attributes. Each
	328	* attribute is frozen one by one.
	329	*/
	330	for (i = 0; i < count; ++i) {
e1e02a22	331	struct bt_ctf_private_value *obj = NULL;
16ca5ff0 PP	332
	333	obj = bt_ctf_attributes_borrow_field_value(attr_obj, i);
	334	if (!obj) {
	335	BT_LOGE("Cannot get attributes object's field value by index: "
	336	"value-addr=%p, index=%" PRIu64,
	337	attr_obj, i);
	338	ret = -1;
	339	goto end;
	340	}
	341
e1e02a22	342	bt_ctf_value_freeze(bt_ctf_private_value_as_value(obj));
16ca5ff0 PP	343	}
	344
	345	end:
	346	return ret;
	347	}