4 * Babeltrace CTF writer - Attributes
6 * Copyright (c) 2015 EfficiOS Inc. and Linux Foundation
7 * Copyright (c) 2015 Philippe Proulx <pproulx@efficios.com>
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:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
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
28 #define BT_LOG_TAG "CTF-WRITER-ATTRS"
29 #include <babeltrace/lib-logging-internal.h>
31 #include <babeltrace/assert-internal.h>
32 #include <babeltrace/babeltrace-internal.h>
33 #include <babeltrace/compat/string-internal.h>
34 #include <babeltrace/object.h>
35 #include <babeltrace/values-internal.h>
36 #include <babeltrace/values.h>
37 #include <babeltrace/private-values.h>
40 #define BT_CTF_ATTR_NAME_INDEX 0
41 #define BT_CTF_ATTR_VALUE_INDEX 1
44 struct bt_private_value
*bt_ctf_attributes_create(void)
46 struct bt_private_value
*attr_obj
;
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).
53 * Example (JSON representation):
56 * ["hostname", "eeppdesk"],
57 * ["sysname", "Linux"],
58 * ["tracer_major", 2],
62 BT_LOGD_STR("Creating attributes object.");
63 attr_obj
= bt_private_value_array_create();
65 BT_LOGE_STR("Failed to create array value.");
67 BT_LOGD("Created attributes object: addr=%p",
75 void bt_ctf_attributes_destroy(struct bt_private_value
*attr_obj
)
77 BT_LOGD("Destroying attributes object: addr=%p", attr_obj
);
78 bt_object_put_ref(attr_obj
);
82 int64_t bt_ctf_attributes_get_count(struct bt_private_value
*attr_obj
)
84 return bt_value_array_get_size(bt_value_borrow_from_private(attr_obj
));
88 const char *bt_ctf_attributes_get_field_name(struct bt_private_value
*attr_obj
,
92 const char *ret
= NULL
;
93 struct bt_private_value
*attr_field_obj
= NULL
;
94 struct bt_private_value
*attr_field_name_obj
= NULL
;
97 BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
101 if (index
>= bt_value_array_get_size(bt_value_borrow_from_private(attr_obj
))) {
102 BT_LOGW("Invalid parameter: index is out of bounds: "
103 "index=%" PRIu64
", count=%" PRId64
,
104 index
, bt_value_array_get_size(bt_value_borrow_from_private(attr_obj
)));
108 attr_field_obj
= bt_private_value_array_borrow_element_by_index(
110 if (!attr_field_obj
) {
111 BT_LOGE("Cannot get attributes object's array value's element by index: "
112 "value-addr=%p, index=%" PRIu64
, attr_obj
, index
);
116 attr_field_name_obj
=
117 bt_private_value_array_borrow_element_by_index(
118 attr_field_obj
, BT_CTF_ATTR_NAME_INDEX
);
119 if (!attr_field_name_obj
) {
120 BT_LOGE("Cannot get attribute array value's element by index: "
121 "value-addr=%p, index=%" PRIu64
, attr_field_obj
,
122 (uint64_t) BT_CTF_ATTR_NAME_INDEX
);
126 rc
= bt_value_string_get(
127 bt_value_borrow_from_private(attr_field_name_obj
), &ret
);
129 BT_LOGE("Cannot get raw value from string value: value-addr=%p",
130 attr_field_name_obj
);
139 struct bt_private_value
*bt_ctf_attributes_borrow_field_value(struct bt_private_value
*attr_obj
,
142 struct bt_private_value
*value_obj
= NULL
;
143 struct bt_private_value
*attr_field_obj
= NULL
;
146 BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
150 if (index
>= bt_value_array_get_size(bt_value_borrow_from_private(attr_obj
))) {
151 BT_LOGW("Invalid parameter: index is out of bounds: "
152 "index=%" PRIu64
", count=%" PRId64
,
153 index
, bt_value_array_get_size(bt_value_borrow_from_private(attr_obj
)));
157 attr_field_obj
= bt_private_value_array_borrow_element_by_index(
159 if (!attr_field_obj
) {
160 BT_LOGE("Cannot get attributes object's array value's element by index: "
161 "value-addr=%p, index=%" PRIu64
, attr_obj
, index
);
165 value_obj
= bt_private_value_array_borrow_element_by_index(attr_field_obj
,
166 BT_CTF_ATTR_VALUE_INDEX
);
168 BT_LOGE("Cannot get attribute array value's element by index: "
169 "value-addr=%p, index=%" PRIu64
, attr_field_obj
,
170 (uint64_t) BT_CTF_ATTR_VALUE_INDEX
);
178 struct bt_private_value
*bt_ctf_attributes_borrow_field_by_name(
179 struct bt_private_value
*attr_obj
, const char *name
)
183 struct bt_private_value
*value_obj
= NULL
;
184 struct bt_private_value
*attr_field_name_obj
= NULL
;
186 attr_size
= bt_value_array_get_size(bt_value_borrow_from_private(attr_obj
));
188 BT_LOGE("Cannot get array value's size: value-addr=%p",
193 for (i
= 0; i
< attr_size
; ++i
) {
195 const char *field_name
;
197 value_obj
= bt_private_value_array_borrow_element_by_index(attr_obj
, i
);
199 BT_LOGE("Cannot get attributes object's array value's element by index: "
200 "value-addr=%p, index=%" PRIu64
, attr_obj
, i
);
204 attr_field_name_obj
= bt_private_value_array_borrow_element_by_index(value_obj
,
205 BT_CTF_ATTR_NAME_INDEX
);
206 if (!attr_field_name_obj
) {
207 BT_LOGE("Cannot get attribute array value's element by index: "
208 "value-addr=%p, index=%" PRIu64
,
209 value_obj
, (int64_t) BT_CTF_ATTR_NAME_INDEX
);
213 ret
= bt_value_string_get(
214 bt_value_borrow_from_private(attr_field_name_obj
),
217 BT_LOGE("Cannot get raw value from string value: value-addr=%p",
218 attr_field_name_obj
);
222 if (!strcmp(field_name
, name
)) {
237 int bt_ctf_attributes_set_field_value(struct bt_private_value
*attr_obj
,
238 const char *name
, struct bt_private_value
*value_obj
)
241 struct bt_private_value
*attr_field_obj
= NULL
;
243 if (!attr_obj
|| !name
|| !value_obj
) {
244 BT_LOGW("Invalid parameter: attributes object, name, or value object is NULL: "
245 "attr-value-addr=%p, name-addr=%p, value-addr=%p",
246 attr_obj
, name
, value_obj
);
251 attr_field_obj
= bt_ctf_attributes_borrow_field_by_name(attr_obj
, name
);
252 if (attr_field_obj
) {
253 ret
= bt_private_value_array_set_element_by_index(
254 attr_field_obj
, BT_CTF_ATTR_VALUE_INDEX
,
255 bt_value_borrow_from_private(value_obj
));
256 attr_field_obj
= NULL
;
260 attr_field_obj
= bt_private_value_array_create();
261 if (!attr_field_obj
) {
262 BT_LOGE_STR("Failed to create empty array value.");
267 ret
= bt_private_value_array_append_string_element(attr_field_obj
, name
);
268 ret
|= bt_private_value_array_append_element(attr_field_obj
,
269 bt_value_borrow_from_private(value_obj
));
271 BT_LOGE("Cannot append elements to array value: addr=%p",
276 ret
= bt_private_value_array_append_element(attr_obj
,
277 bt_value_borrow_from_private(attr_field_obj
));
279 BT_LOGE("Cannot append element to array value: "
280 "array-value-addr=%p, element-value-addr=%p",
281 attr_obj
, attr_field_obj
);
285 bt_object_put_ref(attr_field_obj
);
290 struct bt_private_value
*bt_ctf_attributes_borrow_field_value_by_name(
291 struct bt_private_value
*attr_obj
, const char *name
)
293 struct bt_private_value
*value_obj
= NULL
;
294 struct bt_private_value
*attr_field_obj
= NULL
;
296 if (!attr_obj
|| !name
) {
297 BT_LOGW("Invalid parameter: attributes object or name is NULL: "
298 "value-addr=%p, name-addr=%p", attr_obj
, name
);
302 attr_field_obj
= bt_ctf_attributes_borrow_field_by_name(attr_obj
, name
);
303 if (!attr_field_obj
) {
304 BT_LOGD("Cannot find attributes object's field by name: "
305 "value-addr=%p, name=\"%s\"", attr_obj
, name
);
309 value_obj
= bt_private_value_array_borrow_element_by_index(attr_field_obj
,
310 BT_CTF_ATTR_VALUE_INDEX
);
312 BT_LOGE("Cannot get attribute array value's element by index: "
313 "value-addr=%p, index=%" PRIu64
, attr_field_obj
,
314 (uint64_t) BT_CTF_ATTR_VALUE_INDEX
);
322 int bt_ctf_attributes_freeze(struct bt_private_value
*attr_obj
)
329 BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
334 BT_LOGD("Freezing attributes object: value-addr=%p", attr_obj
);
335 count
= bt_value_array_get_size(bt_value_borrow_from_private(attr_obj
));
336 BT_ASSERT(count
>= 0);
339 * We do not freeze the array value object itself here, since
340 * internal stuff could need to modify/add attributes. Each
341 * attribute is frozen one by one.
343 for (i
= 0; i
< count
; ++i
) {
344 struct bt_private_value
*obj
= NULL
;
346 obj
= bt_ctf_attributes_borrow_field_value(attr_obj
, i
);
348 BT_LOGE("Cannot get attributes object's field value by index: "
349 "value-addr=%p, index=%" PRIu64
,
355 bt_value_freeze(bt_value_borrow_from_private(obj
));
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