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>
35 #include <babeltrace/compat/string-internal.h>
37 #define BT_CTF_ATTR_NAME_INDEX 0
38 #define BT_CTF_ATTR_VALUE_INDEX 1
41 struct bt_value
*bt_ctf_attributes_create(void)
43 struct bt_value
*attr_obj
;
46 * Attributes: array value object of array value objects, each one
47 * containing two entries: a string value object (attributes
48 * field name), and a value object (attributes field value).
50 * Example (JSON representation):
53 * ["hostname", "eeppdesk"],
54 * ["sysname", "Linux"],
55 * ["tracer_major", 2],
59 BT_LOGD_STR("Creating attributes object.");
60 attr_obj
= bt_value_array_create();
62 BT_LOGE_STR("Failed to create array value.");
64 BT_LOGD("Created attributes object: addr=%p",
72 void bt_ctf_attributes_destroy(struct bt_value
*attr_obj
)
74 BT_LOGD("Destroying attributes object: addr=%p", attr_obj
);
79 int64_t bt_ctf_attributes_get_count(struct bt_value
*attr_obj
)
81 return bt_value_array_size(attr_obj
);
85 const char *bt_ctf_attributes_get_field_name(struct bt_value
*attr_obj
,
89 const char *ret
= NULL
;
90 struct bt_value
*attr_field_obj
= NULL
;
91 struct bt_value
*attr_field_name_obj
= NULL
;
94 BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
98 attr_field_obj
= bt_value_array_get(attr_obj
, index
);
99 if (!attr_field_obj
) {
100 BT_LOGE("Cannot get attributes object's array value's element by index: "
101 "value-addr=%p, index=%" PRIu64
, attr_obj
, index
);
105 attr_field_name_obj
= bt_value_array_get(attr_field_obj
,
106 BT_CTF_ATTR_NAME_INDEX
);
107 if (!attr_field_name_obj
) {
108 BT_LOGE("Cannot get attribute array value's element by index: "
109 "value-addr=%p, index=%" PRIu64
, attr_field_obj
,
110 (uint64_t) BT_CTF_ATTR_NAME_INDEX
);
114 rc
= bt_value_string_get(attr_field_name_obj
, &ret
);
116 BT_LOGE("Cannot get raw value from string value: value-addr=%p",
117 attr_field_name_obj
);
122 BT_PUT(attr_field_name_obj
);
123 BT_PUT(attr_field_obj
);
128 struct bt_value
*bt_ctf_attributes_get_field_value(struct bt_value
*attr_obj
,
131 struct bt_value
*value_obj
= NULL
;
132 struct bt_value
*attr_field_obj
= NULL
;
135 BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
139 attr_field_obj
= bt_value_array_get(attr_obj
, index
);
140 if (!attr_field_obj
) {
141 BT_LOGE("Cannot get attributes object's array value's element by index: "
142 "value-addr=%p, index=%" PRIu64
, attr_obj
, index
);
146 value_obj
= bt_value_array_get(attr_field_obj
,
147 BT_CTF_ATTR_VALUE_INDEX
);
149 BT_LOGE("Cannot get attribute array value's element by index: "
150 "value-addr=%p, index=%" PRIu64
, attr_field_obj
,
151 (uint64_t) BT_CTF_ATTR_VALUE_INDEX
);
155 BT_PUT(attr_field_obj
);
160 struct bt_value
*bt_ctf_attributes_get_field_by_name(
161 struct bt_value
*attr_obj
, const char *name
)
165 struct bt_value
*value_obj
= NULL
;
166 struct bt_value
*attr_field_name_obj
= NULL
;
168 attr_size
= bt_value_array_size(attr_obj
);
170 BT_LOGE("Cannot get array value's size: value-addr=%p",
175 for (i
= 0; i
< attr_size
; ++i
) {
177 const char *field_name
;
179 value_obj
= bt_value_array_get(attr_obj
, i
);
181 BT_LOGE("Cannot get attributes object's array value's element by index: "
182 "value-addr=%p, index=%" PRIu64
, attr_obj
, i
);
186 attr_field_name_obj
= bt_value_array_get(value_obj
, 0);
187 if (!attr_field_name_obj
) {
188 BT_LOGE("Cannot get attribute array value's element by index: "
189 "value-addr=%p, index=%" PRIu64
,
190 value_obj
, (int64_t) 0);
194 ret
= bt_value_string_get(attr_field_name_obj
, &field_name
);
196 BT_LOGE("Cannot get raw value from string value: value-addr=%p",
197 attr_field_name_obj
);
201 if (!strcmp(field_name
, name
)) {
202 BT_PUT(attr_field_name_obj
);
206 BT_PUT(attr_field_name_obj
);
213 BT_PUT(attr_field_name_obj
);
220 int bt_ctf_attributes_set_field_value(struct bt_value
*attr_obj
,
221 const char *name
, struct bt_value
*value_obj
)
224 struct bt_value
*attr_field_obj
= NULL
;
226 if (!attr_obj
|| !name
|| !value_obj
) {
227 BT_LOGW("Invalid parameter: attributes object, name, or value object is NULL: "
228 "attr-value-addr=%p, name-addr=%p, value-addr=%p",
229 attr_obj
, name
, value_obj
);
234 attr_field_obj
= bt_ctf_attributes_get_field_by_name(attr_obj
, name
);
235 if (attr_field_obj
) {
236 ret
= bt_value_array_set(attr_field_obj
,
237 BT_CTF_ATTR_VALUE_INDEX
, value_obj
);
241 attr_field_obj
= bt_value_array_create();
242 if (!attr_field_obj
) {
243 BT_LOGE_STR("Failed to create empty array value.");
248 ret
= bt_value_array_append_string(attr_field_obj
, name
);
249 ret
|= bt_value_array_append(attr_field_obj
, value_obj
);
251 BT_LOGE("Cannot append elements to array value: addr=%p",
256 ret
= bt_value_array_append(attr_obj
, attr_field_obj
);
258 BT_LOGE("Cannot append element to array value: "
259 "array-value-addr=%p, element-value-addr=%p",
260 attr_obj
, attr_field_obj
);
264 BT_PUT(attr_field_obj
);
270 struct bt_value
*bt_ctf_attributes_get_field_value_by_name(
271 struct bt_value
*attr_obj
, const char *name
)
273 struct bt_value
*value_obj
= NULL
;
274 struct bt_value
*attr_field_obj
= NULL
;
276 if (!attr_obj
|| !name
) {
277 BT_LOGW("Invalid parameter: attributes object or name is NULL: "
278 "value-addr=%p, name-addr=%p", attr_obj
, name
);
282 attr_field_obj
= bt_ctf_attributes_get_field_by_name(attr_obj
, name
);
283 if (!attr_field_obj
) {
284 BT_LOGD("Cannot find attributes object's field by name: "
285 "value-addr=%p, name=\"%s\"", attr_obj
, name
);
289 value_obj
= bt_value_array_get(attr_field_obj
,
290 BT_CTF_ATTR_VALUE_INDEX
);
292 BT_LOGE("Cannot get attribute array value's element by index: "
293 "value-addr=%p, index=%" PRIu64
, attr_field_obj
,
294 (uint64_t) BT_CTF_ATTR_VALUE_INDEX
);
298 BT_PUT(attr_field_obj
);
304 int bt_ctf_attributes_freeze(struct bt_value
*attr_obj
)
311 BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
316 BT_LOGD("Freezing attributes object: value-addr=%p", attr_obj
);
317 count
= bt_value_array_size(attr_obj
);
321 * We do not freeze the array value object itself here, since
322 * internal stuff could need to modify/add attributes. Each
323 * attribute is frozen one by one.
325 for (i
= 0; i
< count
; ++i
) {
326 struct bt_value
*obj
= NULL
;
328 obj
= bt_ctf_attributes_get_field_value(attr_obj
, i
);
330 BT_LOGE("Cannot get attributes object's field value by index: "
331 "value-addr=%p, index=%" PRIu64
,
337 bt_value_freeze(obj
);
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