4 * Babeltrace CTF IR - 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 "ATTRS"
29 #include <babeltrace/lib-logging-internal.h>
31 #include <babeltrace/babeltrace-internal.h>
32 #include <babeltrace/values.h>
36 #define BT_CTF_ATTR_NAME_INDEX 0
37 #define BT_CTF_ATTR_VALUE_INDEX 1
40 struct bt_value
*bt_ctf_attributes_create(void)
42 struct bt_value
*attr_obj
;
45 * Attributes: array value object of array value objects, each one
46 * containing two entries: a string value object (attributes
47 * field name), and a value object (attributes field value).
49 * Example (JSON representation):
52 * ["hostname", "eeppdesk"],
53 * ["sysname", "Linux"],
54 * ["tracer_major", 2],
58 BT_LOGD_STR("Creating attributes object.");
59 attr_obj
= bt_value_array_create();
61 BT_LOGE_STR("Failed to create array value.");
63 BT_LOGD("Created attributes object: addr=%p",
71 void bt_ctf_attributes_destroy(struct bt_value
*attr_obj
)
73 BT_LOGD("Destroying attributes object: addr=%p", attr_obj
);
78 int64_t bt_ctf_attributes_get_count(struct bt_value
*attr_obj
)
80 return bt_value_array_size(attr_obj
);
84 const char *bt_ctf_attributes_get_field_name(struct bt_value
*attr_obj
,
88 const char *ret
= NULL
;
89 struct bt_value
*attr_field_obj
= NULL
;
90 struct bt_value
*attr_field_name_obj
= NULL
;
93 BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
97 attr_field_obj
= bt_value_array_get(attr_obj
, index
);
98 if (!attr_field_obj
) {
99 BT_LOGE("Cannot get attributes object's array value's element by index: "
100 "value-addr=%p, index=%" PRIu64
, attr_obj
, index
);
104 attr_field_name_obj
= bt_value_array_get(attr_field_obj
,
105 BT_CTF_ATTR_NAME_INDEX
);
106 if (!attr_field_name_obj
) {
107 BT_LOGE("Cannot get attribute array value's element by index: "
108 "value-addr=%p, index=%" PRIu64
, attr_field_obj
,
109 (uint64_t) BT_CTF_ATTR_NAME_INDEX
);
113 rc
= bt_value_string_get(attr_field_name_obj
, &ret
);
115 BT_LOGE("Cannot get raw value from string value: value-addr=%p",
116 attr_field_name_obj
);
121 BT_PUT(attr_field_name_obj
);
122 BT_PUT(attr_field_obj
);
127 struct bt_value
*bt_ctf_attributes_get_field_value(struct bt_value
*attr_obj
,
130 struct bt_value
*value_obj
= NULL
;
131 struct bt_value
*attr_field_obj
= NULL
;
134 BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
138 attr_field_obj
= bt_value_array_get(attr_obj
, index
);
139 if (!attr_field_obj
) {
140 BT_LOGE("Cannot get attributes object's array value's element by index: "
141 "value-addr=%p, index=%" PRIu64
, attr_obj
, index
);
145 value_obj
= bt_value_array_get(attr_field_obj
,
146 BT_CTF_ATTR_VALUE_INDEX
);
148 BT_LOGE("Cannot get attribute array value's element by index: "
149 "value-addr=%p, index=%" PRIu64
, attr_field_obj
,
150 (uint64_t) BT_CTF_ATTR_VALUE_INDEX
);
154 BT_PUT(attr_field_obj
);
159 struct bt_value
*bt_ctf_attributes_get_field_by_name(
160 struct bt_value
*attr_obj
, const char *name
)
164 struct bt_value
*value_obj
= NULL
;
165 struct bt_value
*attr_field_name_obj
= NULL
;
167 attr_size
= bt_value_array_size(attr_obj
);
169 BT_LOGE("Cannot get array value's size: value-addr=%p",
174 for (i
= 0; i
< attr_size
; ++i
) {
176 const char *field_name
;
178 value_obj
= bt_value_array_get(attr_obj
, i
);
180 BT_LOGE("Cannot get attributes object's array value's element by index: "
181 "value-addr=%p, index=%" PRIu64
, attr_obj
, i
);
185 attr_field_name_obj
= bt_value_array_get(value_obj
, 0);
186 if (!attr_field_name_obj
) {
187 BT_LOGE("Cannot get attribute array value's element by index: "
188 "value-addr=%p, index=%" PRIu64
,
189 value_obj
, (int64_t) 0);
193 ret
= bt_value_string_get(attr_field_name_obj
, &field_name
);
195 BT_LOGE("Cannot get raw value from string value: value-addr=%p",
196 attr_field_name_obj
);
200 if (!strcmp(field_name
, name
)) {
201 BT_PUT(attr_field_name_obj
);
205 BT_PUT(attr_field_name_obj
);
212 BT_PUT(attr_field_name_obj
);
219 int bt_ctf_attributes_set_field_value(struct bt_value
*attr_obj
,
220 const char *name
, struct bt_value
*value_obj
)
223 struct bt_value
*attr_field_obj
= NULL
;
225 if (!attr_obj
|| !name
|| !value_obj
) {
226 BT_LOGW("Invalid parameter: attributes object, name, or value object is NULL: "
227 "attr-value-addr=%p, name-addr=%p, value-addr=%p",
228 attr_obj
, name
, value_obj
);
233 attr_field_obj
= bt_ctf_attributes_get_field_by_name(attr_obj
, name
);
234 if (attr_field_obj
) {
235 ret
= bt_value_array_set(attr_field_obj
,
236 BT_CTF_ATTR_VALUE_INDEX
, value_obj
);
240 attr_field_obj
= bt_value_array_create();
241 if (!attr_field_obj
) {
242 BT_LOGE_STR("Failed to create empty array value.");
247 ret
= bt_value_array_append_string(attr_field_obj
, name
);
248 ret
|= bt_value_array_append(attr_field_obj
, value_obj
);
250 BT_LOGE("Cannot append elements to array value: addr=%p",
255 ret
= bt_value_array_append(attr_obj
, attr_field_obj
);
257 BT_LOGE("Cannot append element to array value: "
258 "array-value-addr=%p, element-value-addr=%p",
259 attr_obj
, attr_field_obj
);
263 BT_PUT(attr_field_obj
);
269 struct bt_value
*bt_ctf_attributes_get_field_value_by_name(
270 struct bt_value
*attr_obj
, const char *name
)
272 struct bt_value
*value_obj
= NULL
;
273 struct bt_value
*attr_field_obj
= NULL
;
275 if (!attr_obj
|| !name
) {
276 BT_LOGW("Invalid parameter: attributes object or name is NULL: "
277 "value-addr=%p, name-addr=%p", attr_obj
, name
);
281 attr_field_obj
= bt_ctf_attributes_get_field_by_name(attr_obj
, name
);
282 if (!attr_field_obj
) {
283 BT_LOGD("Cannot find attributes object's field by name: "
284 "value-addr=%p, name=\"%s\"", attr_obj
, name
);
288 value_obj
= bt_value_array_get(attr_field_obj
,
289 BT_CTF_ATTR_VALUE_INDEX
);
291 BT_LOGE("Cannot get attribute array value's element by index: "
292 "value-addr=%p, index=%" PRIu64
, attr_field_obj
,
293 (uint64_t) BT_CTF_ATTR_VALUE_INDEX
);
297 BT_PUT(attr_field_obj
);
303 int bt_ctf_attributes_freeze(struct bt_value
*attr_obj
)
310 BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
315 BT_LOGD("Freezing attributes object: value-addr=%p", attr_obj
);
316 count
= bt_value_array_size(attr_obj
);
320 * We do not freeze the array value object itself here, since
321 * internal stuff could need to modify/add attributes. Each
322 * attribute is frozen one by one.
324 for (i
= 0; i
< count
; ++i
) {
325 struct bt_value
*obj
= NULL
;
327 obj
= bt_ctf_attributes_get_field_value(attr_obj
, i
);
329 BT_LOGE("Cannot get attributes object's field value by index: "
330 "value-addr=%p, index=%" PRIu64
,
336 bt_value_freeze(obj
);
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