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2e33ac5a PP |
1 | #ifndef BABELTRACE_CTF_IR_FIELD_TYPES_H |
2 | #define BABELTRACE_CTF_IR_FIELD_TYPES_H | |
adc315b8 JG |
3 | |
4 | /* | |
2e33ac5a | 5 | * BabelTrace - CTF IR: Event field types |
adc315b8 | 6 | * |
de9dd397 | 7 | * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
adc315b8 JG |
8 | * |
9 | * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
10 | * | |
11 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
12 | * of this software and associated documentation files (the "Software"), to deal | |
13 | * in the Software without restriction, including without limitation the rights | |
14 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
15 | * copies of the Software, and to permit persons to whom the Software is | |
16 | * furnished to do so, subject to the following conditions: | |
17 | * | |
18 | * The above copyright notice and this permission notice shall be included in | |
19 | * all copies or substantial portions of the Software. | |
20 | * | |
21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
22 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
23 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
24 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
25 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
26 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
27 | * SOFTWARE. | |
28 | * | |
29 | * The Common Trace Format (CTF) Specification is available at | |
30 | * http://www.efficios.com/ctf | |
31 | */ | |
32 | ||
adc315b8 JG |
33 | #include <stdint.h> |
34 | ||
35 | #ifdef __cplusplus | |
36 | extern "C" { | |
37 | #endif | |
38 | ||
78c8ab4f PP |
39 | /** |
40 | @defgroup ctfirfieldtypes CTF IR field types | |
41 | @ingroup ctfir | |
42 | @brief CTF IR field types. | |
43 | ||
44 | @code | |
45 | #include <babeltrace/ctf-ir/field-types.h> | |
46 | @endcode | |
47 | ||
48 | A CTF IR <strong><em>field type</em></strong> is a field type that you | |
4089d5a6 | 49 | can use to create concrete @fields. |
78c8ab4f | 50 | |
4089d5a6 | 51 | You can create a @field object from a CTF IR field type object |
78c8ab4f PP |
52 | with bt_ctf_field_create(). |
53 | ||
54 | In the CTF IR hierarchy, you can set the root field types of three | |
55 | objects: | |
56 | ||
57 | - \ref ctfirtraceclass | |
58 | - Trace packet header field type: bt_ctf_trace_set_packet_header_type(). | |
59 | - \ref ctfirstreamclass | |
60 | - Stream packet context field type: | |
61 | bt_ctf_stream_class_set_packet_context_type(). | |
62 | - Stream event header field type: | |
63 | bt_ctf_stream_class_set_event_header_type(). | |
64 | - Stream event context field type: | |
65 | bt_ctf_stream_class_set_event_context_type(). | |
66 | - \ref ctfireventclass | |
67 | - Event context field type: bt_ctf_event_class_set_context_type(). | |
68 | - Event payload field type: bt_ctf_event_class_set_payload_type(). | |
69 | ||
70 | As of Babeltrace \btversion, those six previous "root" field types | |
4089d5a6 | 71 | \em must be @structft objects. |
78c8ab4f | 72 | |
4089d5a6 PP |
73 | If, at any level within a given root field type, you add a @seqft or a |
74 | @varft, you do not need to specify its associated length | |
78c8ab4f | 75 | or tag field type: the length or tag string is enough for the Babeltrace |
4089d5a6 | 76 | system to resolve the needed field type depending on where this |
78c8ab4f PP |
77 | dynamic field type is located within the whole hierarchy. It is |
78 | guaranteed that this automatic resolving is performed for all the field | |
79 | types contained in a given | |
80 | \link ctfirstreamclass CTF IR stream class\endlink (and in its | |
81 | children \link ctfireventclass CTF IR event classes\endlink) once you | |
82 | add it to a \link ctfirtraceclass CTF IR trace class\endlink with | |
83 | bt_ctf_trace_add_stream_class(). Once a stream class is the child of | |
84 | a trace class, this automatic resolving is performed for the field | |
85 | types of an event class when you add it with | |
86 | bt_ctf_stream_class_add_event_class(). If the system cannot find a path | |
87 | to a field in the hierarchy for a dynamic field type, the adding | |
88 | function fails. | |
89 | ||
90 | The standard CTF field types are: | |
91 | ||
92 | <table> | |
93 | <tr> | |
94 | <th>Type ID | |
95 | <th>CTF IR field type | |
96 | <th>CTF IR field which you can create from this field type | |
97 | </tr> | |
98 | <tr> | |
99 | <td>#BT_CTF_TYPE_ID_INTEGER | |
100 | <td>\ref ctfirintfieldtype | |
101 | <td>\ref ctfirintfield | |
102 | </tr> | |
103 | <tr> | |
104 | <td>#BT_CTF_TYPE_ID_FLOAT | |
105 | <td>\ref ctfirfloatfieldtype | |
106 | <td>\ref ctfirfloatfield | |
107 | </tr> | |
108 | <tr> | |
109 | <td>#BT_CTF_TYPE_ID_ENUM | |
110 | <td>\ref ctfirenumfieldtype | |
111 | <td>\ref ctfirenumfield | |
112 | </tr> | |
113 | <tr> | |
114 | <td>#BT_CTF_TYPE_ID_STRING | |
115 | <td>\ref ctfirstringfieldtype | |
116 | <td>\ref ctfirstringfield | |
117 | </tr> | |
118 | <tr> | |
119 | <td>#BT_CTF_TYPE_ID_STRUCT | |
120 | <td>\ref ctfirstructfieldtype | |
121 | <td>\ref ctfirstructfield | |
122 | </tr> | |
123 | <tr> | |
124 | <td>#BT_CTF_TYPE_ID_ARRAY | |
125 | <td>\ref ctfirarrayfieldtype | |
126 | <td>\ref ctfirarrayfield | |
127 | </tr> | |
128 | <tr> | |
129 | <td>#BT_CTF_TYPE_ID_SEQUENCE | |
130 | <td>\ref ctfirseqfieldtype | |
131 | <td>\ref ctfirseqfield | |
132 | </tr> | |
133 | <tr> | |
134 | <td>#BT_CTF_TYPE_ID_VARIANT | |
135 | <td>\ref ctfirvarfieldtype | |
136 | <td>\ref ctfirvarfield | |
137 | </tr> | |
138 | </table> | |
139 | ||
140 | Each field type has its own <strong>type ID</strong> (see | |
141 | #bt_ctf_type_id). You get the type ID of a field type object | |
142 | with bt_ctf_field_type_get_type_id(). | |
143 | ||
144 | You can get a deep copy of a field type with bt_ctf_field_type_copy(). | |
145 | This function resets, in the field type copy, the resolved field type | |
146 | of the dynamic field types. The automatic resolving can be done again | |
147 | when you eventually call bt_ctf_event_create(), | |
148 | bt_ctf_stream_class_add_event_class(), or | |
149 | bt_ctf_trace_add_stream_class(). | |
150 | ||
151 | You \em must always use bt_ctf_field_type_compare() to compare two | |
152 | field types. Since some parts of the Babeltrace system can copy field | |
153 | types behind the scenes, you \em cannot rely on a simple field type | |
154 | pointer comparison. | |
155 | ||
156 | As with any Babeltrace object, CTF IR field type objects have | |
157 | <a href="https://en.wikipedia.org/wiki/Reference_counting">reference | |
158 | counts</a>. See \ref refs to learn more about the reference counting | |
159 | management of Babeltrace objects. | |
160 | ||
161 | The following functions can \em freeze field type objects: | |
162 | ||
163 | - bt_ctf_field_create() freezes its field type parameter. | |
164 | - bt_ctf_stream_class_add_event_class(), if its | |
165 | \link ctfirstreamclass CTF IR stream class\endlink parameter has a | |
166 | \link ctfirtraceclass CTF IR trace class\endlink parent, freezes | |
167 | the root field types of its | |
168 | \link ctfireventclass CTF IR event class\endlink parameter. | |
169 | - bt_ctf_trace_add_stream_class() freezes the root field types of the | |
170 | whole trace class hierarchy (trace class, children stream classes, | |
171 | and their children event classes). | |
172 | - bt_ctf_writer_create_stream() freezes the root field types of the | |
173 | whole CTF writer's trace class hierarchy. | |
174 | - bt_ctf_event_create() freezes the root field types of its event class | |
175 | parameter and of ther parent stream class of this event class. | |
176 | ||
18fcd1c9 PP |
177 | You cannot modify a frozen field type object: it is considered |
178 | immutable, except for \link refs reference counting\endlink. | |
179 | ||
78c8ab4f | 180 | @sa ctfirfields |
bb8c17e0 | 181 | @sa \ref ctfirfieldtypesexamples "Examples" |
78c8ab4f PP |
182 | |
183 | @file | |
10a876cd | 184 | @brief CTF IR field types type and functions. |
78c8ab4f PP |
185 | @sa ctfirfieldtypes |
186 | ||
187 | @addtogroup ctfirfieldtypes | |
188 | @{ | |
189 | */ | |
190 | ||
191 | /** | |
192 | @struct bt_ctf_field_type | |
193 | @brief A CTF IR field type. | |
194 | @sa ctfirfieldtypes | |
195 | */ | |
196 | struct bt_ctf_field_type; | |
adc315b8 JG |
197 | struct bt_ctf_event_class; |
198 | struct bt_ctf_event; | |
b92ddaaa | 199 | struct bt_ctf_field; |
b011f6b0 | 200 | struct bt_ctf_field_path; |
adc315b8 | 201 | |
78c8ab4f PP |
202 | /** @cond DOCUMENT */ |
203 | ||
9a19a512 PP |
204 | /* |
205 | * Babeltrace 1.x enumerations that were also used in CTF writer's API. | |
206 | * They are left here for backward compatibility reasons, but | |
207 | * enum bt_ctf_type_id and enum bt_ctf_string_encoding should be used | |
208 | * in new code. Both new enumerations are compatible with their legacy | |
209 | * counterpart. | |
210 | */ | |
211 | enum ctf_type_id { | |
212 | CTF_TYPE_UNKNOWN = 0, | |
213 | CTF_TYPE_INTEGER, | |
214 | CTF_TYPE_FLOAT, | |
215 | CTF_TYPE_ENUM, | |
216 | CTF_TYPE_STRING, | |
217 | CTF_TYPE_STRUCT, | |
218 | CTF_TYPE_UNTAGGED_VARIANT, | |
219 | CTF_TYPE_VARIANT, | |
220 | CTF_TYPE_ARRAY, | |
221 | CTF_TYPE_SEQUENCE, | |
222 | NR_CTF_TYPES, | |
223 | }; | |
224 | ||
225 | /* | |
226 | * Old enum. | |
227 | */ | |
228 | enum ctf_string_encoding { | |
229 | CTF_STRING_NONE = 0, | |
230 | CTF_STRING_UTF8, | |
231 | CTF_STRING_ASCII, | |
232 | CTF_STRING_UNKNOWN, | |
233 | }; | |
234 | ||
78c8ab4f PP |
235 | /** @endcond */ |
236 | ||
237 | /** | |
238 | @brief CTF scope. | |
239 | */ | |
240 | enum bt_ctf_scope { | |
241 | /// Unknown, used for errors. | |
242 | BT_CTF_SCOPE_UNKNOWN = -1, | |
243 | ||
244 | /// Trace packet header. | |
245 | BT_CTF_SCOPE_TRACE_PACKET_HEADER = 1, | |
246 | ||
247 | /// Stream packet context. | |
248 | BT_CTF_SCOPE_STREAM_PACKET_CONTEXT = 2, | |
249 | ||
250 | /// Stream event header. | |
251 | BT_CTF_SCOPE_STREAM_EVENT_HEADER = 3, | |
252 | ||
253 | /// Stream event context. | |
254 | BT_CTF_SCOPE_STREAM_EVENT_CONTEXT = 4, | |
255 | ||
256 | /// Event context. | |
257 | BT_CTF_SCOPE_EVENT_CONTEXT = 5, | |
258 | ||
259 | /// Event payload. | |
260 | BT_CTF_SCOPE_EVENT_PAYLOAD = 6, | |
261 | ||
262 | /// @cond DOCUMENT | |
263 | BT_CTF_SCOPE_ENV = 0, | |
264 | BT_CTF_SCOPE_EVENT_FIELDS = 6, | |
265 | /// @endcond | |
266 | }; | |
267 | ||
268 | /** | |
269 | @name Type information | |
270 | @{ | |
271 | */ | |
272 | ||
273 | /** | |
4089d5a6 | 274 | @brief Type ID of a @ft. |
78c8ab4f | 275 | */ |
9a19a512 | 276 | enum bt_ctf_type_id { |
78c8ab4f | 277 | /// Unknown, used for errors. |
9a19a512 | 278 | BT_CTF_TYPE_ID_UNKNOWN = CTF_TYPE_UNKNOWN, |
78c8ab4f PP |
279 | |
280 | /// \ref ctfirintfieldtype | |
9a19a512 | 281 | BT_CTF_TYPE_ID_INTEGER = CTF_TYPE_INTEGER, |
78c8ab4f PP |
282 | |
283 | /// \ref ctfirfloatfieldtype | |
9a19a512 | 284 | BT_CTF_TYPE_ID_FLOAT = CTF_TYPE_FLOAT, |
78c8ab4f PP |
285 | |
286 | /// \ref ctfirenumfieldtype | |
9a19a512 | 287 | BT_CTF_TYPE_ID_ENUM = CTF_TYPE_ENUM, |
78c8ab4f PP |
288 | |
289 | /// \ref ctfirstringfieldtype | |
9a19a512 | 290 | BT_CTF_TYPE_ID_STRING = CTF_TYPE_STRING, |
78c8ab4f PP |
291 | |
292 | /// \ref ctfirstructfieldtype | |
9a19a512 | 293 | BT_CTF_TYPE_ID_STRUCT = CTF_TYPE_STRUCT, |
78c8ab4f PP |
294 | |
295 | /// @cond DOCUMENT | |
9a19a512 | 296 | BT_CTF_TYPE_ID_UNTAGGED_VARIANT = CTF_TYPE_UNTAGGED_VARIANT, |
78c8ab4f PP |
297 | /// @endcond |
298 | ||
299 | /// \ref ctfirarrayfieldtype | |
9a19a512 | 300 | BT_CTF_TYPE_ID_ARRAY = CTF_TYPE_ARRAY, |
78c8ab4f PP |
301 | |
302 | /// \ref ctfirseqfieldtype | |
9a19a512 | 303 | BT_CTF_TYPE_ID_SEQUENCE = CTF_TYPE_SEQUENCE, |
9a19a512 | 304 | |
78c8ab4f PP |
305 | /// \ref ctfirvarfieldtype |
306 | BT_CTF_TYPE_ID_VARIANT = CTF_TYPE_VARIANT, | |
307 | ||
308 | /// Number of enumeration entries. | |
309 | BT_CTF_NR_TYPE_IDS = NR_CTF_TYPES, | |
adc315b8 JG |
310 | }; |
311 | ||
78c8ab4f | 312 | /** |
4089d5a6 | 313 | @brief Returns the type ID of the @ft \p field_type. |
78c8ab4f PP |
314 | |
315 | @param[in] field_type Field type of which to get the type ID. | |
316 | @returns Type ID of \p field_type, | |
317 | or #BT_CTF_TYPE_ID_UNKNOWN on error. | |
318 | ||
319 | @prenotnull{field_type} | |
320 | @postrefcountsame{field_type} | |
321 | ||
322 | @sa #bt_ctf_type_id: CTF IR field type ID. | |
323 | @sa bt_ctf_field_type_is_integer(): Returns whether or not a given | |
4089d5a6 | 324 | field type is a @intft. |
78c8ab4f | 325 | @sa bt_ctf_field_type_is_floating_point(): Returns whether or not a |
4089d5a6 | 326 | given field type is a @floatft. |
78c8ab4f | 327 | @sa bt_ctf_field_type_is_enumeration(): Returns whether or not a given |
4089d5a6 | 328 | field type is a @enumft. |
78c8ab4f | 329 | @sa bt_ctf_field_type_is_string(): Returns whether or not a given |
4089d5a6 | 330 | field type is a @stringft. |
78c8ab4f | 331 | @sa bt_ctf_field_type_is_structure(): Returns whether or not a given |
4089d5a6 | 332 | field type is a @structft. |
78c8ab4f | 333 | @sa bt_ctf_field_type_is_array(): Returns whether or not a given |
4089d5a6 | 334 | field type is a @arrayft. |
78c8ab4f | 335 | @sa bt_ctf_field_type_is_sequence(): Returns whether or not a given |
4089d5a6 | 336 | field type is a @seqft. |
78c8ab4f | 337 | @sa bt_ctf_field_type_is_variant(): Returns whether or not a given |
4089d5a6 | 338 | field type is a @varft. |
78c8ab4f PP |
339 | */ |
340 | extern enum bt_ctf_type_id bt_ctf_field_type_get_type_id( | |
341 | struct bt_ctf_field_type *field_type); | |
342 | ||
343 | /** | |
4089d5a6 | 344 | @brief Returns whether or not the @ft \p field_type is a @intft. |
78c8ab4f PP |
345 | |
346 | @param[in] field_type Field type to check (can be \c NULL). | |
347 | @returns 1 if \p field_type is an integer field type, | |
348 | or 0 otherwise (including if \p field_type is | |
349 | \c NULL). | |
350 | ||
351 | @prenotnull{field_type} | |
352 | @postrefcountsame{field_type} | |
353 | ||
354 | @sa bt_ctf_field_type_get_type_id(): Returns the type ID of a given | |
355 | field type. | |
356 | */ | |
357 | extern int bt_ctf_field_type_is_integer(struct bt_ctf_field_type *field_type); | |
358 | ||
359 | /** | |
4089d5a6 | 360 | @brief Returns whether or not the @ft \p field_type is a @floatft. |
78c8ab4f PP |
361 | |
362 | @param[in] field_type Field type to check (can be \c NULL). | |
363 | @returns 1 if \p field_type is a floating point | |
364 | number field type, | |
365 | or 0 otherwise (including if \p field_type is | |
366 | \c NULL). | |
367 | ||
368 | @postrefcountsame{field_type} | |
369 | ||
370 | @sa bt_ctf_field_type_get_type_id(): Returns the type ID of a given | |
371 | field type. | |
372 | */ | |
373 | extern int bt_ctf_field_type_is_floating_point(struct bt_ctf_field_type *field_type); | |
374 | ||
375 | /** | |
4089d5a6 | 376 | @brief Returns whether or not the @ft \p field_type is a @enumft. |
78c8ab4f PP |
377 | |
378 | @param[in] field_type Field type to check (can be \c NULL). | |
379 | @returns 1 if \p field_type is an enumeration field type, | |
380 | or 0 otherwise (including if \p field_type is | |
381 | \c NULL). | |
382 | ||
383 | @postrefcountsame{field_type} | |
384 | ||
385 | @sa bt_ctf_field_type_get_type_id(): Returns the type ID of a given | |
386 | field type. | |
387 | */ | |
388 | extern int bt_ctf_field_type_is_enumeration(struct bt_ctf_field_type *field_type); | |
389 | ||
390 | /** | |
4089d5a6 | 391 | @brief Returns whether or not the @ft \p field_type is a @stringft. |
78c8ab4f PP |
392 | |
393 | @param[in] field_type Field type to check (can be \c NULL). | |
394 | @returns 1 if \p field_type is a string field type, | |
395 | or 0 otherwise (including if \p field_type is | |
396 | \c NULL). | |
397 | ||
398 | @postrefcountsame{field_type} | |
399 | ||
400 | @sa bt_ctf_field_type_get_type_id(): Returns the type ID of a given | |
401 | field type. | |
402 | */ | |
403 | extern int bt_ctf_field_type_is_string(struct bt_ctf_field_type *field_type); | |
404 | ||
405 | /** | |
4089d5a6 | 406 | @brief Returns whether or not the @ft \p field_type is a @structft. |
78c8ab4f PP |
407 | |
408 | @param[in] field_type Field type to check (can be \c NULL). | |
409 | @returns 1 if \p field_type is a structure field type, | |
410 | or 0 otherwise (including if \p field_type is | |
411 | \c NULL). | |
412 | ||
413 | @postrefcountsame{field_type} | |
414 | ||
415 | @sa bt_ctf_field_type_get_type_id(): Returns the type ID of a given | |
416 | field type. | |
417 | */ | |
418 | extern int bt_ctf_field_type_is_structure(struct bt_ctf_field_type *field_type); | |
419 | ||
420 | /** | |
4089d5a6 | 421 | @brief Returns whether or not the @ft \p field_type is a @arrayft. |
78c8ab4f PP |
422 | |
423 | @param[in] field_type Field type to check (can be \c NULL). | |
424 | @returns 1 if \p field_type is an array field type, | |
425 | or 0 otherwise (including if \p field_type is | |
426 | \c NULL). | |
427 | ||
428 | @postrefcountsame{field_type} | |
429 | ||
430 | @sa bt_ctf_field_type_get_type_id(): Returns the type ID of a given | |
431 | field type. | |
432 | */ | |
433 | extern int bt_ctf_field_type_is_array(struct bt_ctf_field_type *field_type); | |
434 | ||
435 | /** | |
4089d5a6 | 436 | @brief Returns whether or not the @ft \p field_type is a @seqft. |
78c8ab4f PP |
437 | |
438 | @param[in] field_type Field type to check (can be \c NULL). | |
439 | @returns 1 if \p field_type is a sequence field type, | |
440 | or 0 otherwise (including if \p field_type is | |
441 | \c NULL). | |
442 | ||
443 | @postrefcountsame{field_type} | |
444 | ||
445 | @sa bt_ctf_field_type_get_type_id(): Returns the type ID of a given | |
446 | field type. | |
447 | */ | |
448 | extern int bt_ctf_field_type_is_sequence(struct bt_ctf_field_type *field_type); | |
449 | ||
450 | /** | |
4089d5a6 | 451 | @brief Returns whether or not the @ft \p field_type is a @varft. |
78c8ab4f PP |
452 | |
453 | @param[in] field_type Field type to check (can be \c NULL). | |
454 | @returns 1 if \p field_type is a variant field type, | |
455 | or 0 otherwise (including if \p field_type is | |
456 | \c NULL). | |
457 | ||
458 | @postrefcountsame{field_type} | |
459 | ||
460 | @sa bt_ctf_field_type_get_type_id(): Returns the type ID of a given | |
461 | field type. | |
462 | */ | |
463 | extern int bt_ctf_field_type_is_variant(struct bt_ctf_field_type *field_type); | |
464 | ||
465 | /** @} */ | |
466 | ||
467 | /** | |
468 | @name Common properties types and functions | |
469 | @{ | |
470 | */ | |
471 | ||
472 | /** | |
473 | @brief <a href="https://en.wikipedia.org/wiki/Endianness">Byte order</a> | |
4089d5a6 | 474 | of a @ft. |
78c8ab4f | 475 | */ |
adc315b8 | 476 | enum bt_ctf_byte_order { |
78c8ab4f | 477 | /// Unknown, used for errors. |
b92ddaaa | 478 | BT_CTF_BYTE_ORDER_UNKNOWN = -1, |
78c8ab4f | 479 | |
c35a1669 | 480 | /* |
46df6b28 PP |
481 | * Note that native, in the context of the CTF specification, is defined |
482 | * as "the byte order described in the trace" and does not mean that the | |
483 | * host's endianness will be used. | |
c35a1669 | 484 | */ |
78c8ab4f | 485 | /// Native (default) byte order. |
adc315b8 | 486 | BT_CTF_BYTE_ORDER_NATIVE = 0, |
78c8ab4f PP |
487 | |
488 | /// Little-endian. | |
adc315b8 | 489 | BT_CTF_BYTE_ORDER_LITTLE_ENDIAN, |
78c8ab4f PP |
490 | |
491 | /// Big-endian. | |
adc315b8 | 492 | BT_CTF_BYTE_ORDER_BIG_ENDIAN, |
78c8ab4f PP |
493 | |
494 | /// Network byte order (big-endian). | |
adc315b8 JG |
495 | BT_CTF_BYTE_ORDER_NETWORK, |
496 | }; | |
497 | ||
78c8ab4f | 498 | /** |
4089d5a6 | 499 | @brief String encoding of a @ft. |
78c8ab4f | 500 | */ |
87b41f95 | 501 | enum bt_ctf_string_encoding { |
78c8ab4f PP |
502 | /// Unknown, used for errors. |
503 | BT_CTF_STRING_ENCODING_UNKNOWN = CTF_STRING_UNKNOWN, | |
504 | ||
505 | /// No encoding. | |
87b41f95 | 506 | BT_CTF_STRING_ENCODING_NONE = CTF_STRING_NONE, |
78c8ab4f PP |
507 | |
508 | /// <a href="https://en.wikipedia.org/wiki/UTF-8">UTF-8</a>. | |
87b41f95 | 509 | BT_CTF_STRING_ENCODING_UTF8 = CTF_STRING_UTF8, |
78c8ab4f PP |
510 | |
511 | /// <a href="https://en.wikipedia.org/wiki/ASCII">ASCII</a>. | |
87b41f95 | 512 | BT_CTF_STRING_ENCODING_ASCII = CTF_STRING_ASCII, |
87b41f95 PP |
513 | }; |
514 | ||
78c8ab4f | 515 | /** |
4089d5a6 PP |
516 | @brief Returns the alignment of the @fields described by |
517 | the @ft \p field_type. | |
78c8ab4f PP |
518 | |
519 | @param[in] field_type Field type which describes the | |
520 | fields of which to get the alignment. | |
521 | @returns Alignment of the fields described by | |
522 | \p field_type, or a negative value on error. | |
523 | ||
524 | @prenotnull{field_type} | |
525 | @postrefcountsame{field_type} | |
526 | ||
527 | @sa bt_ctf_field_type_set_alignment(): Sets the alignment | |
528 | of the fields described by a given field type. | |
529 | */ | |
530 | extern int bt_ctf_field_type_get_alignment( | |
531 | struct bt_ctf_field_type *field_type); | |
532 | ||
533 | /** | |
4089d5a6 PP |
534 | @brief Sets the alignment of the @fields described by the |
535 | @ft \p field_type to \p alignment. | |
78c8ab4f PP |
536 | |
537 | \p alignment \em must be greater than 0 and a power of two. | |
538 | ||
539 | @param[in] field_type Field type which describes the fields of | |
540 | which to set the alignment. | |
541 | @param[in] alignment Alignment of the fields described by | |
542 | \p field_type. | |
543 | @returns 0 on success, or a negative value on error. | |
544 | ||
545 | @prenotnull{field_type} | |
546 | @prehot{field_type} | |
547 | @pre \p alignment is greater than 0 and a power of two. | |
548 | @postrefcountsame{field_type} | |
549 | ||
550 | @sa bt_ctf_field_type_get_alignment(): Returns the alignment of the | |
551 | fields described by a given field type. | |
552 | */ | |
553 | extern int bt_ctf_field_type_set_alignment(struct bt_ctf_field_type *field_type, | |
554 | unsigned int alignment); | |
555 | ||
556 | /** | |
4089d5a6 PP |
557 | @brief Returns the byte order of the @fields described by |
558 | the @ft \p field_type. | |
78c8ab4f | 559 | |
4089d5a6 PP |
560 | You can only call this function if \p field_type is a @intft, a |
561 | @floatft, or a @enumft. | |
78c8ab4f PP |
562 | |
563 | @param[in] field_type Field type which describes the | |
564 | fields of which to get the byte order. | |
565 | @returns Byte order of the fields described by | |
566 | \p field_type, or #BT_CTF_BYTE_ORDER_UNKNOWN on | |
567 | error. | |
568 | ||
569 | @prenotnull{field_type} | |
4089d5a6 | 570 | @pre \p field_type is a @intft, a @floatft, or a @enumft. |
78c8ab4f PP |
571 | @postrefcountsame{field_type} |
572 | ||
573 | @sa bt_ctf_field_type_set_byte_order(): Sets the byte order | |
574 | of the fields described by a given field type. | |
575 | */ | |
576 | extern enum bt_ctf_byte_order bt_ctf_field_type_get_byte_order( | |
577 | struct bt_ctf_field_type *field_type); | |
578 | ||
579 | /** | |
4089d5a6 PP |
580 | @brief Sets the byte order of the @fields described by the |
581 | @ft \p field_type to \p byte_order. | |
78c8ab4f PP |
582 | |
583 | If \p field_type is a compound field type, this function also | |
584 | recursively sets the byte order of its children to \p byte_order. | |
585 | ||
586 | @param[in] field_type Field type which describes the fields of | |
587 | which to set the byte order. | |
588 | @param[in] byte_order Alignment of the fields described by | |
589 | \p field_type. | |
590 | @returns 0 on success, or a negative value on error. | |
591 | ||
592 | @prenotnull{field_type} | |
593 | @prehot{field_type} | |
594 | @pre \p byte_order is #BT_CTF_BYTE_ORDER_NATIVE, | |
595 | #BT_CTF_BYTE_ORDER_LITTLE_ENDIAN, #BT_CTF_BYTE_ORDER_BIG_ENDIAN, | |
596 | or #BT_CTF_BYTE_ORDER_NETWORK. | |
4089d5a6 | 597 | @postrefcountsame{field_type} |
78c8ab4f PP |
598 | |
599 | @sa bt_ctf_field_type_get_byte_order(): Returns the byte order of the | |
600 | fields described by a given field type. | |
601 | */ | |
602 | extern int bt_ctf_field_type_set_byte_order( | |
603 | struct bt_ctf_field_type *field_type, | |
604 | enum bt_ctf_byte_order byte_order); | |
605 | ||
606 | /** @} */ | |
607 | ||
608 | /** | |
609 | @name Utility functions | |
610 | @{ | |
611 | */ | |
612 | ||
613 | /** | |
4089d5a6 | 614 | @brief Returns whether or not the @ft \p field_type_a |
78c8ab4f PP |
615 | is equivalent to the field type \p field_type_b. |
616 | ||
617 | You \em must use this function to compare two field types: it is not | |
618 | safe to compare two pointer values directly, because, for internal | |
619 | reasons, some parts of the Babeltrace system can copy user field types | |
620 | and discard the original ones. | |
621 | ||
622 | @param[in] field_type_a Field type to compare to \p field_type_b. | |
623 | @param[in] field_type_b Field type to compare to \p field_type_a. | |
624 | @returns 0 if \p field_type_a is equivalent to | |
625 | \p field_type_b, 1 if they are not equivalent, | |
626 | or a negative value on error. | |
627 | ||
628 | @prenotnull{field_type_a} | |
629 | @prenotnull{field_type_b} | |
630 | @postrefcountsame{field_type_a} | |
631 | @postrefcountsame{field_type_b} | |
632 | */ | |
633 | extern int bt_ctf_field_type_compare(struct bt_ctf_field_type *field_type_a, | |
634 | struct bt_ctf_field_type *field_type_b); | |
635 | ||
636 | /** | |
4089d5a6 | 637 | @brief Creates a \em deep copy of the @ft \p field_type. |
78c8ab4f PP |
638 | |
639 | You can copy a frozen field type: the resulting copy is | |
640 | <em>not frozen</em>. | |
641 | ||
4089d5a6 | 642 | This function resets the tag field type of a copied @varft. The |
78c8ab4f PP |
643 | automatic field resolving which some functions of the API perform |
644 | can set it again when the returned field type is used (learn more | |
645 | in the detailed description of this module). | |
646 | ||
647 | @param[in] field_type Field type to copy. | |
648 | @returns Deep copy of \p field_type on success, | |
649 | or \c NULL on error. | |
650 | ||
651 | @prenotnull{field_type} | |
652 | @postrefcountsame{field_type} | |
653 | @postsuccessrefcountret1 | |
63168860 | 654 | @post <strong>On success</strong>, the returned field type is not frozen. |
78c8ab4f PP |
655 | */ |
656 | extern struct bt_ctf_field_type *bt_ctf_field_type_copy( | |
657 | struct bt_ctf_field_type *field_type); | |
658 | ||
659 | /** @} */ | |
660 | ||
661 | /** @} */ | |
662 | ||
663 | /** | |
664 | @defgroup ctfirintfieldtype CTF IR integer field type | |
665 | @ingroup ctfirfieldtypes | |
666 | @brief CTF IR integer field type. | |
667 | ||
668 | @code | |
669 | #include <babeltrace/ctf-ir/field-types.h> | |
670 | @endcode | |
671 | ||
672 | A CTF IR <strong><em>integer field type</em></strong> is a field type that | |
4089d5a6 | 673 | you can use to create concrete @intfield objects. |
78c8ab4f PP |
674 | |
675 | You can create an integer field type | |
676 | with bt_ctf_field_type_integer_create(). | |
677 | ||
678 | An integer field type has the following properties: | |
679 | ||
680 | <table> | |
681 | <tr> | |
682 | <th>Property | |
683 | <th>Value at creation | |
684 | <th>Getter | |
685 | <th>Setter | |
686 | </tr> | |
687 | <tr> | |
688 | <td>\b Alignment (bits) of the described integer fields | |
689 | <td>1 | |
690 | <td>bt_ctf_field_type_get_alignment() | |
691 | <td>bt_ctf_field_type_set_alignment() | |
692 | </tr> | |
693 | <tr> | |
694 | <td><strong>Byte order</strong> of the described integer fields | |
695 | <td>#BT_CTF_BYTE_ORDER_NATIVE | |
696 | <td>bt_ctf_field_type_get_byte_order() | |
697 | <td>bt_ctf_field_type_set_byte_order() | |
698 | </tr> | |
699 | <tr> | |
700 | <td><strong>Storage size</strong> (bits) of the described | |
701 | integer fields | |
702 | <td>Specified at creation | |
703 | <td>bt_ctf_field_type_integer_get_size() | |
704 | <td>None: specified at creation (bt_ctf_field_type_integer_create()) | |
705 | </tr> | |
706 | <tr> | |
707 | <td><strong>Signedness</strong> of the described integer fields | |
708 | <td>Unsigned | |
709 | <td>bt_ctf_field_type_integer_get_signed() | |
710 | <td>bt_ctf_field_type_integer_set_signed() | |
711 | </tr> | |
712 | <tr> | |
713 | <td><strong>Preferred display base</strong> of the described | |
714 | integer fields | |
715 | <td>#BT_CTF_INTEGER_BASE_DECIMAL | |
716 | <td>bt_ctf_field_type_integer_get_base() | |
717 | <td>bt_ctf_field_type_integer_set_base() | |
718 | </tr> | |
719 | <tr> | |
720 | <td>\b Encoding of the described integer fields | |
721 | <td>#BT_CTF_STRING_ENCODING_NONE | |
722 | <td>bt_ctf_field_type_integer_get_encoding() | |
723 | <td>bt_ctf_field_type_integer_set_encoding() | |
724 | </tr> | |
725 | <tr> | |
726 | <td><strong>Mapped | |
727 | \link ctfirclockclass CTF IR clock class\endlink</strong> | |
728 | <td>None | |
ac0c6bdd PP |
729 | <td>bt_ctf_field_type_integer_get_mapped_clock_class() |
730 | <td>bt_ctf_field_type_integer_set_mapped_clock_class() | |
78c8ab4f PP |
731 | </tr> |
732 | </table> | |
733 | ||
734 | @sa ctfirintfield | |
735 | @sa ctfirfieldtypes | |
bb8c17e0 | 736 | @sa \ref ctfirfieldtypesexamples_intfieldtype "Examples" |
78c8ab4f PP |
737 | |
738 | @addtogroup ctfirintfieldtype | |
739 | @{ | |
740 | */ | |
741 | ||
742 | /** | |
4089d5a6 | 743 | @brief Preferred display base (radix) of a @intft. |
78c8ab4f PP |
744 | */ |
745 | enum bt_ctf_integer_base { | |
746 | /// Unknown, used for errors. | |
747 | BT_CTF_INTEGER_BASE_UNKNOWN = -1, | |
748 | ||
749 | /// Binary. | |
750 | BT_CTF_INTEGER_BASE_BINARY = 2, | |
751 | ||
752 | /// Octal. | |
753 | BT_CTF_INTEGER_BASE_OCTAL = 8, | |
754 | ||
755 | /// Decimal. | |
756 | BT_CTF_INTEGER_BASE_DECIMAL = 10, | |
757 | ||
758 | /// Hexadecimal. | |
759 | BT_CTF_INTEGER_BASE_HEXADECIMAL = 16, | |
b011f6b0 PP |
760 | }; |
761 | ||
78c8ab4f | 762 | /** |
4089d5a6 PP |
763 | @brief Creates a default @intft with \p size bits as the storage size |
764 | of the @intfields it describes. | |
78c8ab4f PP |
765 | |
766 | @param[in] size Storage size (bits) of the described integer fields. | |
767 | @returns Created integer field type, or \c NULL on error. | |
768 | ||
769 | @pre \p size is greater than 0 and lesser than or equal to 64. | |
770 | @postsuccessrefcountret1 | |
771 | */ | |
adc315b8 JG |
772 | extern struct bt_ctf_field_type *bt_ctf_field_type_integer_create( |
773 | unsigned int size); | |
774 | ||
78c8ab4f | 775 | /** |
4089d5a6 PP |
776 | @brief Returns the storage size, in bits, of the @intfields |
777 | described by the @intft \p int_field_type. | |
78c8ab4f PP |
778 | |
779 | @param[in] int_field_type Integer field type which describes the | |
780 | integer fields of which to get the | |
781 | storage size. | |
782 | @returns Storage size (bits) of the integer | |
783 | fields described by \p int_field_type, | |
784 | or a negative value on error. | |
785 | ||
786 | @prenotnull{int_field_type} | |
787 | @preisintft{int_field_type} | |
788 | @postrefcountsame{int_field_type} | |
789 | */ | |
b92ddaaa | 790 | extern int bt_ctf_field_type_integer_get_size( |
78c8ab4f | 791 | struct bt_ctf_field_type *int_field_type); |
b92ddaaa | 792 | |
78c8ab4f | 793 | /** |
4089d5a6 PP |
794 | @brief Returns whether or not the @intfields described by the @intft |
795 | \p int_field_type are signed. | |
78c8ab4f PP |
796 | |
797 | @param[in] int_field_type Integer field type which describes the | |
798 | integer fields of which to get the | |
799 | signedness. | |
800 | @returns 1 if the integer fields described by | |
801 | \p int_field_type are signed, 0 if they | |
802 | are unsigned, or a negative value on | |
803 | error. | |
804 | ||
805 | @prenotnull{int_field_type} | |
806 | @preisintft{int_field_type} | |
807 | @postrefcountsame{int_field_type} | |
808 | ||
809 | @sa bt_ctf_field_type_integer_set_signed(): Sets the signedness of the | |
810 | integer fields described by a given integer field type. | |
811 | */ | |
b92ddaaa | 812 | extern int bt_ctf_field_type_integer_get_signed( |
78c8ab4f | 813 | struct bt_ctf_field_type *int_field_type); |
b92ddaaa | 814 | |
78c8ab4f | 815 | /** |
4089d5a6 PP |
816 | @brief Sets whether or not the @intfields described by |
817 | the @intft \p int_field_type are signed. | |
78c8ab4f PP |
818 | |
819 | @param[in] int_field_type Integer field type which describes the | |
820 | integer fields of which to set the | |
821 | signedness. | |
822 | @param[in] is_signed Signedness of the integer fields | |
823 | described by \p int_field_type; 0 means | |
824 | \em unsigned, 1 means \em signed. | |
825 | @returns 0 on success, or a negative value on error. | |
826 | ||
827 | @prenotnull{int_field_type} | |
828 | @preisintft{int_field_type} | |
829 | @prehot{int_field_type} | |
830 | @pre \p is_signed is 0 or 1. | |
831 | @postrefcountsame{event_class} | |
832 | ||
833 | @sa bt_ctf_field_type_integer_get_signed(): Returns the signedness of | |
834 | the integer fields described by a given integer field type. | |
835 | */ | |
adc315b8 | 836 | extern int bt_ctf_field_type_integer_set_signed( |
78c8ab4f | 837 | struct bt_ctf_field_type *int_field_type, int is_signed); |
adc315b8 | 838 | |
78c8ab4f | 839 | /** |
4089d5a6 PP |
840 | @brief Returns the preferred display base (radix) of the @intfields |
841 | described by the @intft \p int_field_type. | |
78c8ab4f PP |
842 | |
843 | @param[in] int_field_type Integer field type which describes the | |
844 | integer fields of which to get the | |
845 | preferred display base. | |
846 | @returns Preferred display base of the integer | |
847 | fields described by \p int_field_type, | |
848 | or #BT_CTF_INTEGER_BASE_UNKNOWN on | |
849 | error. | |
850 | ||
851 | @prenotnull{int_field_type} | |
852 | @preisintft{int_field_type} | |
853 | @postrefcountsame{int_field_type} | |
854 | ||
855 | @sa bt_ctf_field_type_integer_set_base(): Sets the preferred display | |
856 | base of the integer fields described by a given integer field | |
857 | type. | |
858 | */ | |
b92ddaaa | 859 | extern enum bt_ctf_integer_base bt_ctf_field_type_integer_get_base( |
78c8ab4f | 860 | struct bt_ctf_field_type *int_field_type); |
b92ddaaa | 861 | |
78c8ab4f | 862 | /** |
4089d5a6 PP |
863 | @brief Sets the preferred display base (radix) of the @intfields |
864 | described by the @intft \p int_field_type to \p base. | |
78c8ab4f PP |
865 | |
866 | @param[in] int_field_type Integer field type which describes the | |
867 | integer fields of which to set the | |
868 | preferred display base. | |
869 | @param[in] base Preferred display base of the integer | |
870 | fields described by \p int_field_type. | |
871 | @returns 0 on success, or a negative value on error. | |
872 | ||
873 | @prenotnull{int_field_type} | |
874 | @preisintft{int_field_type} | |
875 | @prehot{int_field_type} | |
876 | @pre \p base is #BT_CTF_INTEGER_BASE_BINARY, #BT_CTF_INTEGER_BASE_OCTAL, | |
877 | #BT_CTF_INTEGER_BASE_DECIMAL, or | |
878 | #BT_CTF_INTEGER_BASE_HEXADECIMAL. | |
879 | @postrefcountsame{int_field_type} | |
880 | ||
881 | @sa bt_ctf_field_type_integer_get_base(): Returns the preferred display | |
882 | base of the integer fields described by a given | |
883 | integer field type. | |
884 | */ | |
885 | extern int bt_ctf_field_type_integer_set_base( | |
886 | struct bt_ctf_field_type *int_field_type, | |
adc315b8 JG |
887 | enum bt_ctf_integer_base base); |
888 | ||
78c8ab4f | 889 | /** |
4089d5a6 PP |
890 | @brief Returns the encoding of the @intfields described by |
891 | the @intft \p int_field_type. | |
78c8ab4f PP |
892 | |
893 | @param[in] int_field_type Integer field type which describes the | |
894 | integer fields of which to get the | |
895 | encoding. | |
896 | @returns Encoding of the integer | |
897 | fields described by \p int_field_type, | |
898 | or #BT_CTF_STRING_ENCODING_UNKNOWN on | |
899 | error. | |
900 | ||
901 | @prenotnull{int_field_type} | |
902 | @preisintft{int_field_type} | |
903 | @postrefcountsame{int_field_type} | |
904 | ||
905 | @sa bt_ctf_field_type_integer_set_encoding(): Sets the encoding | |
906 | of the integer fields described by a given integer field type. | |
907 | */ | |
87b41f95 | 908 | extern enum bt_ctf_string_encoding bt_ctf_field_type_integer_get_encoding( |
78c8ab4f | 909 | struct bt_ctf_field_type *int_field_type); |
b92ddaaa | 910 | |
78c8ab4f | 911 | /** |
4089d5a6 PP |
912 | @brief Sets the encoding of the @intfields described by the @intft |
913 | \p int_field_type to \p encoding. | |
78c8ab4f | 914 | |
4089d5a6 PP |
915 | You can use this property, in CTF IR, to create "text" @arrayfts or |
916 | @seqfts. A text array field type is array field type with an unsigned, | |
78c8ab4f PP |
917 | 8-bit integer field type having an encoding as its element field type. |
918 | ||
919 | @param[in] int_field_type Integer field type which describes the | |
920 | integer fields of which to set the | |
921 | encoding. | |
922 | @param[in] encoding Encoding of the integer | |
923 | fields described by \p int_field_type. | |
924 | @returns 0 on success, or a negative value on error. | |
925 | ||
926 | @prenotnull{int_field_type} | |
927 | @preisintft{int_field_type} | |
928 | @prehot{int_field_type} | |
929 | @pre \p encoding is #BT_CTF_STRING_ENCODING_NONE, | |
930 | #BT_CTF_STRING_ENCODING_ASCII, or | |
931 | #BT_CTF_STRING_ENCODING_UTF8. | |
932 | @postrefcountsame{int_field_type} | |
933 | ||
934 | @sa bt_ctf_field_type_integer_get_encoding(): Returns the encoding of | |
935 | the integer fields described by a given integer field type. | |
936 | */ | |
adc315b8 | 937 | extern int bt_ctf_field_type_integer_set_encoding( |
78c8ab4f | 938 | struct bt_ctf_field_type *int_field_type, |
87b41f95 | 939 | enum bt_ctf_string_encoding encoding); |
adc315b8 | 940 | |
6cfb906f | 941 | /** |
4089d5a6 PP |
942 | @brief Returns the \link ctfirclockclass CTF IR clock class\endlink |
943 | mapped to the @intft \p int_field_type. | |
78c8ab4f PP |
944 | |
945 | The mapped clock class, if any, indicates the class of the clock which | |
4089d5a6 | 946 | an @intfield described by \p int_field_type should sample or update. |
78c8ab4f PP |
947 | This mapped clock class is only indicative. |
948 | ||
949 | @param[in] int_field_type Integer field type of which to get the | |
950 | mapped clock class. | |
951 | @returns Mapped clock class of \p int_field_type, | |
952 | or \c NULL if there's no mapped clock | |
953 | class or on error. | |
954 | ||
955 | @prenotnull{int_field_type} | |
956 | @preisintft{int_field_type} | |
957 | @postrefcountsame{int_field_type} | |
958 | @postsuccessrefcountretinc | |
959 | ||
ac0c6bdd | 960 | @sa bt_ctf_field_type_integer_set_mapped_clock_class(): Sets the mapped |
78c8ab4f PP |
961 | clock class of a given integer field type. |
962 | */ | |
ac0c6bdd | 963 | extern struct bt_ctf_clock_class *bt_ctf_field_type_integer_get_mapped_clock_class( |
78c8ab4f | 964 | struct bt_ctf_field_type *int_field_type); |
6cfb906f JG |
965 | |
966 | /** | |
4089d5a6 | 967 | @brief Sets the \link ctfirclockclass CTF IR clock class\endlink mapped |
ac0c6bdd | 968 | to the @intft \p int_field_type to \p clock_class. |
78c8ab4f PP |
969 | |
970 | The mapped clock class, if any, indicates the class of the clock which | |
971 | an integer field described by \p int_field_type should sample or update. | |
972 | This mapped clock class is only indicative. | |
973 | ||
974 | @param[in] int_field_type Integer field type of which to set the | |
975 | mapped clock class. | |
976 | @param[in] clock_class Mapped clock class of \p int_field_type. | |
977 | @returns 0 on success, or a negative value on error. | |
978 | ||
979 | @prenotnull{int_field_type} | |
980 | @prenotnull{clock_class} | |
981 | @preisintft{int_field_type} | |
982 | @prehot{int_field_type} | |
983 | @postrefcountsame{int_field_type} | |
984 | @postsuccessrefcountinc{clock_class} | |
985 | ||
ac0c6bdd | 986 | @sa bt_ctf_field_type_integer_get_mapped_clock_class(): Returns the mapped |
78c8ab4f PP |
987 | clock class of a given integer field type. |
988 | */ | |
ac0c6bdd | 989 | extern int bt_ctf_field_type_integer_set_mapped_clock_class( |
78c8ab4f | 990 | struct bt_ctf_field_type *int_field_type, |
ac0c6bdd | 991 | struct bt_ctf_clock_class *clock_class); |
6cfb906f | 992 | |
78c8ab4f | 993 | /** @} */ |
adc315b8 | 994 | |
78c8ab4f PP |
995 | /** |
996 | @defgroup ctfirfloatfieldtype CTF IR floating point number field type | |
997 | @ingroup ctfirfieldtypes | |
998 | @brief CTF IR floating point number field type. | |
999 | ||
1000 | @code | |
1001 | #include <babeltrace/ctf-ir/field-types.h> | |
1002 | @endcode | |
1003 | ||
1004 | A CTF IR <strong><em>floating point number field type</em></strong> is | |
4089d5a6 | 1005 | a field type that you can use to create concrete @floatfields. |
78c8ab4f PP |
1006 | |
1007 | You can create a floating point number field type | |
1008 | with bt_ctf_field_type_floating_point_create(). | |
1009 | ||
1010 | A floating point number field type has the following properties: | |
1011 | ||
1012 | <table> | |
1013 | <tr> | |
1014 | <th>Property | |
1015 | <th>Value at creation | |
1016 | <th>Getter | |
1017 | <th>Setter | |
1018 | </tr> | |
1019 | <tr> | |
1020 | <td>\b Alignment (bits) of the described floating point | |
1021 | number fields | |
1022 | <td>1 | |
1023 | <td>bt_ctf_field_type_get_alignment() | |
1024 | <td>bt_ctf_field_type_set_alignment() | |
1025 | </tr> | |
1026 | <tr> | |
1027 | <td><strong>Byte order</strong> of the described floating point | |
1028 | number fields | |
1029 | <td>#BT_CTF_BYTE_ORDER_NATIVE | |
1030 | <td>bt_ctf_field_type_get_byte_order() | |
1031 | <td>bt_ctf_field_type_set_byte_order() | |
1032 | </tr> | |
1033 | <tr> | |
1034 | <td><strong>Exponent storage size</strong> (bits) of the described | |
1035 | floating point number fields | |
1036 | <td>8 | |
1037 | <td>bt_ctf_field_type_floating_point_get_exponent_digits() | |
1038 | <td>bt_ctf_field_type_floating_point_set_exponent_digits() | |
1039 | </tr> | |
1040 | <tr> | |
1041 | <td><strong>Mantissa and sign storage size</strong> (bits) of the | |
1042 | described floating point number fields | |
1043 | <td>24 (23-bit mantissa, 1-bit sign) | |
1044 | <td>bt_ctf_field_type_floating_point_get_mantissa_digits() | |
1045 | <td>bt_ctf_field_type_floating_point_set_mantissa_digits() | |
1046 | </tr> | |
1047 | </table> | |
1048 | ||
1049 | @sa ctfirfloatfield | |
1050 | @sa ctfirfieldtypes | |
bb8c17e0 | 1051 | @sa \ref ctfirfieldtypesexamples_floatfieldtype "Examples" |
78c8ab4f PP |
1052 | |
1053 | @addtogroup ctfirfloatfieldtype | |
1054 | @{ | |
1055 | */ | |
b92ddaaa | 1056 | |
78c8ab4f | 1057 | /** |
4089d5a6 | 1058 | @brief Creates a default @floatft. |
adc315b8 | 1059 | |
78c8ab4f PP |
1060 | @returns Created floating point number field type, |
1061 | or \c NULL on error. | |
b92ddaaa | 1062 | |
78c8ab4f PP |
1063 | @postsuccessrefcountret1 |
1064 | */ | |
1065 | extern struct bt_ctf_field_type *bt_ctf_field_type_floating_point_create(void); | |
b92ddaaa | 1066 | |
78c8ab4f | 1067 | /** |
4089d5a6 PP |
1068 | @brief Returns the exponent storage size of the @floatfields |
1069 | described by the @floatft \p float_field_type. | |
78c8ab4f PP |
1070 | |
1071 | @param[in] float_field_type Floating point number field type which | |
1072 | describes the floating point number | |
1073 | fields of which to get the exponent | |
1074 | storage size. | |
1075 | @returns Exponent storage size of the | |
1076 | floating point number fields | |
1077 | described by \p float_field_type, | |
1078 | or a negative value on error. | |
1079 | ||
1080 | @prenotnull{float_field_type} | |
1081 | @preisfloatft{float_field_type} | |
1082 | @postrefcountsame{float_field_type} | |
1083 | ||
1084 | @sa bt_ctf_field_type_floating_point_set_exponent_digits(): Sets the | |
1085 | exponent storage size of the floating point number fields | |
1086 | described by a given floating point number field type. | |
1087 | */ | |
1088 | extern int bt_ctf_field_type_floating_point_get_exponent_digits( | |
1089 | struct bt_ctf_field_type *float_field_type); | |
b92ddaaa | 1090 | |
78c8ab4f | 1091 | /** |
4089d5a6 PP |
1092 | @brief Sets the exponent storage size of the @floatfields described by |
1093 | the @floatft \p float_field_type to \p exponent_size. | |
78c8ab4f PP |
1094 | |
1095 | As of Babeltrace \btversion, \p exponent_size can only be 8 or 11. | |
1096 | ||
1097 | @param[in] float_field_type Floating point number field type which | |
1098 | describes the floating point number | |
1099 | fields of which to set the exponent | |
1100 | storage size. | |
1101 | @param[in] exponent_size Exponent storage size of the floating | |
1102 | point number fields described by \p | |
1103 | float_field_type. | |
1104 | @returns 0 on success, or a negative value on error. | |
1105 | ||
1106 | @prenotnull{float_field_type} | |
1107 | @preisfloatft{float_field_type} | |
1108 | @prehot{float_field_type} | |
1109 | @pre \p exponent_size is 8 or 11. | |
1110 | @postrefcountsame{float_field_type} | |
1111 | ||
1112 | @sa bt_ctf_field_type_floating_point_get_exponent_digits(): Returns the | |
1113 | exponent storage size of the floating point number fields | |
1114 | described by a given floating point number field type. | |
1115 | */ | |
1116 | extern int bt_ctf_field_type_floating_point_set_exponent_digits( | |
1117 | struct bt_ctf_field_type *float_field_type, | |
1118 | unsigned int exponent_size); | |
1119 | ||
1120 | /** | |
4089d5a6 PP |
1121 | @brief Returns the mantissa and sign storage size of the @floatfields |
1122 | described by the @floatft \p float_field_type. | |
78c8ab4f PP |
1123 | |
1124 | On success, the returned value is the sum of the mantissa \em and | |
1125 | sign storage sizes. | |
1126 | ||
1127 | @param[in] float_field_type Floating point number field type which | |
1128 | describes the floating point number | |
1129 | fields of which to get the mantissa and | |
1130 | sign storage size. | |
1131 | @returns Mantissa and sign storage size of the | |
1132 | floating point number fields | |
1133 | described by \p float_field_type, | |
1134 | or a negative value on error. | |
1135 | ||
1136 | @prenotnull{float_field_type} | |
1137 | @preisfloatft{float_field_type} | |
1138 | @postrefcountsame{float_field_type} | |
1139 | ||
1140 | @sa bt_ctf_field_type_floating_point_set_mantissa_digits(): Sets the | |
1141 | mantissa and size storage size of the floating point number | |
1142 | fields described by a given floating point number field type. | |
1143 | */ | |
1144 | extern int bt_ctf_field_type_floating_point_get_mantissa_digits( | |
1145 | struct bt_ctf_field_type *float_field_type); | |
1146 | ||
1147 | /** | |
4089d5a6 PP |
1148 | @brief Sets the mantissa and sign storage size of the @floatfields |
1149 | described by the @floatft \p float_field_type to \p | |
1150 | mantissa_sign_size. | |
78c8ab4f PP |
1151 | |
1152 | As of Babeltrace \btversion, \p mantissa_sign_size can only be 24 or 53. | |
1153 | ||
1154 | @param[in] float_field_type Floating point number field type which | |
1155 | describes the floating point number | |
1156 | fields of which to set the mantissa and | |
1157 | sign storage size. | |
1158 | @param[in] mantissa_sign_size Mantissa and sign storage size of the | |
1159 | floating point number fields described | |
1160 | by \p float_field_type. | |
1161 | @returns 0 on success, or a negative value on error. | |
1162 | ||
1163 | @prenotnull{float_field_type} | |
1164 | @preisfloatft{float_field_type} | |
1165 | @prehot{float_field_type} | |
1166 | @pre \p mantissa_sign_size is 24 or 53. | |
1167 | @postrefcountsame{float_field_type} | |
1168 | ||
1169 | @sa bt_ctf_field_type_floating_point_get_mantissa_digits(): Returns the | |
1170 | mantissa and sign storage size of the floating point number | |
1171 | fields described by a given floating point number field type. | |
1172 | */ | |
1173 | extern int bt_ctf_field_type_floating_point_set_mantissa_digits( | |
1174 | struct bt_ctf_field_type *float_field_type, | |
1175 | unsigned int mantissa_sign_size); | |
1176 | ||
1177 | /** @} */ | |
b92ddaaa | 1178 | |
96e8f959 MD |
1179 | struct bt_ctf_field_type_enumeration_mapping_iterator * |
1180 | bt_ctf_field_type_enumeration_find_mappings_by_name( | |
1181 | struct bt_ctf_field_type *type, | |
1182 | const char *name); | |
1183 | ||
1184 | struct bt_ctf_field_type_enumeration_mapping_iterator * | |
1185 | bt_ctf_field_type_enumeration_find_mappings_by_signed_value( | |
1186 | struct bt_ctf_field_type *type, | |
1187 | int64_t value); | |
1188 | ||
1189 | struct bt_ctf_field_type_enumeration_mapping_iterator * | |
1190 | bt_ctf_field_type_enumeration_find_mappings_by_unsigned_value( | |
1191 | struct bt_ctf_field_type *type, | |
1192 | uint64_t value); | |
1193 | ||
1194 | int bt_ctf_field_type_enumeration_mapping_iterator_get_name( | |
1195 | struct bt_ctf_field_type_enumeration_mapping_iterator *iter, | |
1196 | const char **mapping_name); | |
1197 | ||
1198 | int bt_ctf_field_type_enumeration_mapping_iterator_get_signed( | |
1199 | struct bt_ctf_field_type_enumeration_mapping_iterator *iter, | |
1200 | const char **mapping_name, int64_t *lower, int64_t *upper); | |
1201 | ||
1202 | int bt_ctf_field_type_enumeration_mapping_iterator_get_unsigned( | |
1203 | struct bt_ctf_field_type_enumeration_mapping_iterator *iter, | |
1204 | const char **mapping_name, uint64_t *lower, uint64_t *upper); | |
1205 | ||
1206 | int bt_ctf_field_type_enumeration_mapping_iterator_next( | |
1207 | struct bt_ctf_field_type_enumeration_mapping_iterator *iter); | |
1208 | ||
78c8ab4f PP |
1209 | /** |
1210 | @defgroup ctfirenumfieldtype CTF IR enumeration field type | |
1211 | @ingroup ctfirfieldtypes | |
1212 | @brief CTF IR enumeration field type. | |
1213 | ||
1214 | @code | |
1215 | #include <babeltrace/ctf-ir/field-types.h> | |
1216 | @endcode | |
1217 | ||
1218 | A CTF IR <strong><em>enumeration field type</em></strong> is | |
4089d5a6 | 1219 | a field type that you can use to create concrete @enumfields. |
78c8ab4f | 1220 | |
4089d5a6 PP |
1221 | You can create an enumeration field type with |
1222 | bt_ctf_field_type_enumeration_create(). This function needs a @intft | |
1223 | which represents the storage field type of the created enumeration field | |
1224 | type. In other words, an enumeration field type wraps an integer field | |
1225 | type and adds label-value mappings to it. | |
78c8ab4f PP |
1226 | |
1227 | An enumeration mapping has: | |
1228 | ||
1229 | - A <strong>name</strong>. | |
1230 | - A <strong>range of values</strong> given by a beginning and an ending | |
1231 | value, both included in the range. | |
1232 | ||
1233 | You can add a mapping to an enumeration field type with | |
1234 | bt_ctf_field_type_enumeration_add_mapping() or | |
1235 | bt_ctf_field_type_enumeration_add_mapping_unsigned(), depending on the | |
4089d5a6 | 1236 | signedness of the wrapped @intft. |
78c8ab4f | 1237 | |
96e8f959 MD |
1238 | Many mappings can share the same name, and the ranges of a given |
1239 | enumeration field type are allowed to overlap. For example, | |
78c8ab4f PP |
1240 | this is a valid set of mappings: |
1241 | ||
1242 | @verbatim | |
1243 | APPLE -> [ 3, 19] | |
1244 | BANANA -> [-15, 1] | |
1245 | CHERRY -> [ 25, 34] | |
1246 | APPLE -> [ 55, 55] | |
1247 | @endverbatim | |
1248 | ||
96e8f959 | 1249 | The following set of mappings is also valid: |
78c8ab4f PP |
1250 | |
1251 | @verbatim | |
1252 | APPLE -> [ 3, 19] | |
1253 | BANANA -> [-15, 1] | |
1254 | CHERRY -> [ 25, 34] | |
1255 | APPLE -> [ 30, 55] | |
1256 | @endverbatim | |
1257 | ||
1258 | Here, the range of the second \c APPLE mapping overlaps the range of | |
1259 | the \c CHERRY mapping. | |
1260 | ||
1261 | @sa ctfirenumfield | |
1262 | @sa ctfirfieldtypes | |
1263 | ||
1264 | @addtogroup ctfirenumfieldtype | |
1265 | @{ | |
1266 | */ | |
1267 | ||
1268 | /** | |
4089d5a6 | 1269 | @brief Creates a default @enumft wrapping the @intft \p int_field_type. |
78c8ab4f PP |
1270 | |
1271 | @param[in] int_field_type Integer field type wrapped by the | |
1272 | created enumeration field type. | |
1273 | @returns Created enumeration field type, | |
1274 | or \c NULL on error. | |
1275 | ||
1276 | @prenotnull{int_field_type} | |
1277 | @preisintft{int_field_type} | |
1278 | @postsuccessrefcountinc{int_field_type} | |
1279 | @postsuccessrefcountret1 | |
1280 | */ | |
1281 | extern struct bt_ctf_field_type *bt_ctf_field_type_enumeration_create( | |
1282 | struct bt_ctf_field_type *int_field_type); | |
1283 | ||
1284 | /** | |
4089d5a6 | 1285 | @brief Returns the @intft wrapped by the @enumft \p enum_field_type. |
78c8ab4f PP |
1286 | |
1287 | @param[in] enum_field_type Enumeration field type of which to get | |
1288 | the wrapped integer field type. | |
1289 | @returns Integer field type wrapped by | |
1290 | \p enum_field_type, or \c NULL on | |
1291 | error. | |
1292 | ||
1293 | @prenotnull{enum_field_type} | |
1294 | @preisenumft{enum_field_type} | |
1295 | @postrefcountsame{enum_field_type} | |
1296 | @postsuccessrefcountretinc | |
1297 | */ | |
1298 | extern | |
1299 | struct bt_ctf_field_type *bt_ctf_field_type_enumeration_get_container_type( | |
1300 | struct bt_ctf_field_type *enum_field_type); | |
1301 | ||
1302 | /** | |
4089d5a6 PP |
1303 | @brief Returns the number of mappings contained in the |
1304 | @enumft \p enum_field_type. | |
78c8ab4f PP |
1305 | |
1306 | @param[in] enum_field_type Enumeration field type of which to get | |
1307 | the number of contained mappings. | |
1308 | @returns Number of mappings contained in | |
1309 | \p enum_field_type, or a negative | |
1310 | value on error. | |
1311 | ||
1312 | @prenotnull{enum_field_type} | |
1313 | @preisenumft{enum_field_type} | |
1314 | @postrefcountsame{enum_field_type} | |
1315 | */ | |
1316 | extern int bt_ctf_field_type_enumeration_get_mapping_count( | |
1317 | struct bt_ctf_field_type *enum_field_type); | |
1318 | ||
96e8f959 MD |
1319 | extern int bt_ctf_field_type_enumeration_get_mapping_name( |
1320 | struct bt_ctf_field_type *enum_field_type, int index, | |
1321 | const char **name); | |
1322 | ||
78c8ab4f | 1323 | /** |
4089d5a6 | 1324 | @brief Returns the signed mapping of the @enumft |
78c8ab4f PP |
1325 | \p enum_field_type at index \p index. |
1326 | ||
4089d5a6 PP |
1327 | The @intft wrapped by \p enum_field_type, as returned by |
1328 | bt_ctf_field_type_enumeration_get_container_type(), must be \b signed | |
1329 | to use this function. | |
78c8ab4f PP |
1330 | |
1331 | On success, \p enum_field_type remains the sole owner of \p *name. | |
1332 | ||
1333 | @param[in] enum_field_type Enumeration field type of which to get | |
1334 | the mapping at index \p index. | |
1335 | @param[in] index Index of the mapping to get from | |
1336 | \p enum_field_type. | |
1337 | @param[out] name Returned name of the mapping at index | |
1338 | \p index. | |
1339 | @param[out] range_begin Returned beginning of the range | |
1340 | (included) of the mapping at index \p | |
1341 | index. | |
1342 | @param[out] range_end Returned end of the range (included) of | |
1343 | the mapping at index \p index. | |
1344 | @returns 0 on success, or a negative value on error. | |
1345 | ||
1346 | @prenotnull{enum_field_type} | |
1347 | @prenotnull{name} | |
1348 | @prenotnull{range_begin} | |
1349 | @prenotnull{range_end} | |
1350 | @preisenumft{enum_field_type} | |
4089d5a6 | 1351 | @pre The wrapped @intft of \p enum_field_type is signed. |
78c8ab4f PP |
1352 | @pre \p index is lesser than the number of mappings contained in the |
1353 | enumeration field type \p enum_field_type (see | |
1354 | bt_ctf_field_type_enumeration_get_mapping_count()). | |
1355 | @postrefcountsame{enum_field_type} | |
1356 | ||
96e8f959 MD |
1357 | @sa bt_ctf_field_type_enumeration_get_mapping_signed(): Returns the |
1358 | signed mapping contained by a given enumeration field type | |
78c8ab4f PP |
1359 | at a given index. |
1360 | */ | |
96e8f959 | 1361 | extern int bt_ctf_field_type_enumeration_get_mapping_signed( |
78c8ab4f PP |
1362 | struct bt_ctf_field_type *enum_field_type, int index, |
1363 | const char **name, int64_t *range_begin, int64_t *range_end); | |
1364 | ||
1365 | /** | |
4089d5a6 PP |
1366 | @brief Returns the unsigned mapping of the @enumft |
1367 | \p enum_field_type at index \p index. | |
78c8ab4f | 1368 | |
4089d5a6 | 1369 | The @intft wrapped by \p enum_field_type, as returned by |
78c8ab4f PP |
1370 | bt_ctf_field_type_enumeration_get_container_type(), must be |
1371 | \b unsigned to use this function. | |
1372 | ||
1373 | On success, \p enum_field_type remains the sole owner of \p *name. | |
1374 | ||
1375 | @param[in] enum_field_type Enumeration field type of which to get | |
1376 | the mapping at index \p index. | |
1377 | @param[in] index Index of the mapping to get from | |
1378 | \p enum_field_type. | |
1379 | @param[out] name Returned name of the mapping at index | |
1380 | \p index. | |
1381 | @param[out] range_begin Returned beginning of the range | |
1382 | (included) of the mapping at index \p | |
1383 | index. | |
1384 | @param[out] range_end Returned end of the range (included) of | |
1385 | the mapping at index \p index. | |
1386 | @returns 0 on success, or a negative value on error. | |
1387 | ||
1388 | @prenotnull{enum_field_type} | |
1389 | @prenotnull{name} | |
1390 | @prenotnull{range_begin} | |
1391 | @prenotnull{range_end} | |
1392 | @preisenumft{enum_field_type} | |
4089d5a6 | 1393 | @pre The wrapped @intft of \p enum_field_type is unsigned. |
78c8ab4f PP |
1394 | @pre \p index is lesser than the number of mappings contained in the |
1395 | enumeration field type \p enum_field_type (see | |
1396 | bt_ctf_field_type_enumeration_get_mapping_count()). | |
1397 | @postrefcountsame{enum_field_type} | |
1398 | ||
96e8f959 MD |
1399 | @sa bt_ctf_field_type_enumeration_get_mapping_unsigned(): Returns the |
1400 | unsigned mapping contained by a given enumeration field type | |
78c8ab4f PP |
1401 | at a given index. |
1402 | */ | |
1403 | extern int bt_ctf_field_type_enumeration_get_mapping_unsigned( | |
1404 | struct bt_ctf_field_type *enum_field_type, int index, | |
1405 | const char **name, uint64_t *range_begin, | |
1406 | uint64_t *range_end); | |
1407 | ||
78c8ab4f | 1408 | /** |
4089d5a6 PP |
1409 | @brief Adds a mapping to the @enumft \p enum_field_type which maps the |
1410 | name \p name to the signed range \p range_begin (included) to | |
1411 | \p range_end (included). | |
78c8ab4f PP |
1412 | |
1413 | Make \p range_begin and \p range_end the same value to add a mapping | |
1414 | to a single value. | |
1415 | ||
4089d5a6 | 1416 | The @intft wrapped by \p enum_field_type, as returned by |
78c8ab4f PP |
1417 | bt_ctf_field_type_enumeration_get_container_type(), must be |
1418 | \b signed to use this function. | |
1419 | ||
96e8f959 | 1420 | A mapping in \p enum_field_type can exist with the name \p name. |
78c8ab4f PP |
1421 | |
1422 | @param[in] enum_field_type Enumeration field type to which to add | |
1423 | a mapping. | |
1424 | @param[in] name Name of the mapping to add (copied | |
1425 | on success). | |
1426 | @param[in] range_begin Beginning of the range of the mapping | |
1427 | (included). | |
1428 | @param[in] range_end End of the range of the mapping | |
1429 | (included). | |
1430 | @returns 0 on success, or a negative value on error. | |
1431 | ||
1432 | @prenotnull{enum_field_type} | |
1433 | @prenotnull{name} | |
1434 | @preisenumft{enum_field_type} | |
4089d5a6 | 1435 | @pre The wrapped @intft of \p enum_field_type is signed. |
78c8ab4f PP |
1436 | @pre \p range_end is greater than or equal to \p range_begin. |
1437 | @postrefcountsame{enum_field_type} | |
1438 | ||
1439 | @sa bt_ctf_field_type_enumeration_add_mapping_unsigned(): Adds an | |
1440 | unsigned mapping to a given enumeration field type. | |
1441 | */ | |
1442 | extern int bt_ctf_field_type_enumeration_add_mapping( | |
1443 | struct bt_ctf_field_type *enum_field_type, const char *name, | |
1444 | int64_t range_begin, int64_t range_end); | |
adc315b8 | 1445 | |
78c8ab4f | 1446 | /** |
4089d5a6 PP |
1447 | @brief Adds a mapping to the @enumft \p enum_field_type which maps |
1448 | the name \p name to the unsigned | |
78c8ab4f PP |
1449 | range \p range_begin (included) to \p range_end (included). |
1450 | ||
1451 | Make \p range_begin and \p range_end the same value to add a mapping | |
1452 | to a single value. | |
1453 | ||
4089d5a6 | 1454 | The @intft wrapped by \p enum_field_type, as returned by |
78c8ab4f PP |
1455 | bt_ctf_field_type_enumeration_get_container_type(), must be |
1456 | \b unsigned to use this function. | |
1457 | ||
96e8f959 | 1458 | A mapping in \p enum_field_type can exist with the name \p name. |
78c8ab4f PP |
1459 | |
1460 | @param[in] enum_field_type Enumeration field type to which to add | |
1461 | a mapping. | |
1462 | @param[in] name Name of the mapping to add (copied | |
1463 | on success). | |
1464 | @param[in] range_begin Beginning of the range of the mapping | |
1465 | (included). | |
1466 | @param[in] range_end End of the range of the mapping | |
1467 | (included). | |
1468 | @returns 0 on success, or a negative value on error. | |
1469 | ||
1470 | @prenotnull{enum_field_type} | |
1471 | @prenotnull{name} | |
1472 | @preisenumft{enum_field_type} | |
4089d5a6 | 1473 | @pre The wrapped @intft of \p enum_field_type is unsigned. |
78c8ab4f PP |
1474 | @pre \p range_end is greater than or equal to \p range_begin. |
1475 | @postrefcountsame{enum_field_type} | |
1476 | ||
1477 | @sa bt_ctf_field_type_enumeration_add_mapping(): Adds a signed | |
1478 | mapping to a given enumeration field type. | |
1479 | */ | |
1480 | extern int bt_ctf_field_type_enumeration_add_mapping_unsigned( | |
1481 | struct bt_ctf_field_type *enum_field_type, const char *name, | |
1482 | uint64_t range_begin, uint64_t range_end); | |
b92ddaaa | 1483 | |
78c8ab4f | 1484 | /** @} */ |
adc315b8 | 1485 | |
78c8ab4f PP |
1486 | /** |
1487 | @defgroup ctfirstringfieldtype CTF IR string field type | |
1488 | @ingroup ctfirfieldtypes | |
1489 | @brief CTF IR string field type. | |
b92ddaaa | 1490 | |
78c8ab4f PP |
1491 | @code |
1492 | #include <babeltrace/ctf-ir/field-types.h> | |
1493 | @endcode | |
adc315b8 | 1494 | |
78c8ab4f | 1495 | A CTF IR <strong><em>string field type</em></strong> is a field type that |
4089d5a6 | 1496 | you can use to create concrete @stringfields. |
adc315b8 | 1497 | |
78c8ab4f PP |
1498 | You can create a string field type |
1499 | with bt_ctf_field_type_string_create(). | |
adc315b8 | 1500 | |
78c8ab4f | 1501 | A string field type has only one property: the \b encoding of its |
4089d5a6 | 1502 | described @stringfields. By default, the encoding of the string fields |
78c8ab4f PP |
1503 | described by a string field type is #BT_CTF_STRING_ENCODING_UTF8. You |
1504 | can set the encoding of the string fields described by a string field | |
1505 | type with bt_ctf_field_type_string_set_encoding(). | |
1506 | ||
1507 | @sa ctfirstringfield | |
1508 | @sa ctfirfieldtypes | |
1509 | ||
1510 | @addtogroup ctfirstringfieldtype | |
1511 | @{ | |
1512 | */ | |
1513 | ||
1514 | /** | |
4089d5a6 | 1515 | @brief Creates a default @stringft. |
78c8ab4f PP |
1516 | |
1517 | @returns Created string field type, or \c NULL on error. | |
1518 | ||
1519 | @postsuccessrefcountret1 | |
1520 | */ | |
1521 | extern struct bt_ctf_field_type *bt_ctf_field_type_string_create(void); | |
1522 | ||
1523 | /** | |
4089d5a6 PP |
1524 | @brief Returns the encoding of the @stringfields described by |
1525 | the @stringft \p string_field_type. | |
78c8ab4f PP |
1526 | |
1527 | @param[in] string_field_type String field type which describes the | |
1528 | string fields of which to get the | |
1529 | encoding. | |
1530 | @returns Encoding of the string | |
1531 | fields described by \p string_field_type, | |
1532 | or #BT_CTF_STRING_ENCODING_UNKNOWN on | |
1533 | error. | |
1534 | ||
1535 | @prenotnull{string_field_type} | |
1536 | @preisstringft{string_field_type} | |
1537 | @postrefcountsame{string_field_type} | |
1538 | ||
1539 | @sa bt_ctf_field_type_string_set_encoding(): Sets the encoding | |
1540 | of the string fields described by a given string field type. | |
1541 | */ | |
1542 | extern enum bt_ctf_string_encoding bt_ctf_field_type_string_get_encoding( | |
1543 | struct bt_ctf_field_type *string_field_type); | |
1544 | ||
1545 | /** | |
4089d5a6 PP |
1546 | @brief Sets the encoding of the @stringfields described by the |
1547 | @stringft \p string_field_type to \p encoding. | |
78c8ab4f PP |
1548 | |
1549 | @param[in] string_field_type String field type which describes the | |
1550 | string fields of which to set the | |
1551 | encoding. | |
1552 | @param[in] encoding Encoding of the string fields described | |
1553 | by \p string_field_type. | |
1554 | @returns 0 on success, or a negative value on error. | |
1555 | ||
1556 | @prenotnull{string_field_type} | |
1557 | @preisstringft{string_field_type} | |
1558 | @prehot{string_field_type} | |
1559 | @pre \p encoding is #BT_CTF_STRING_ENCODING_ASCII or | |
1560 | #BT_CTF_STRING_ENCODING_UTF8. | |
1561 | @postrefcountsame{string_field_type} | |
1562 | ||
1563 | @sa bt_ctf_field_type_string_get_encoding(): Returns the encoding of | |
1564 | the string fields described by a given string field type. | |
1565 | */ | |
1566 | extern int bt_ctf_field_type_string_set_encoding( | |
1567 | struct bt_ctf_field_type *string_field_type, | |
1568 | enum bt_ctf_string_encoding encoding); | |
1569 | ||
1570 | /** @} */ | |
1571 | ||
1572 | /** | |
1573 | @defgroup ctfirstructfieldtype CTF IR structure field type | |
1574 | @ingroup ctfirfieldtypes | |
1575 | @brief CTF IR structure field type. | |
1576 | ||
1577 | @code | |
1578 | #include <babeltrace/ctf-ir/field-types.h> | |
1579 | @endcode | |
1580 | ||
1581 | A CTF IR <strong><em>structure field type</em></strong> is | |
4089d5a6 | 1582 | a field type that you can use to create concrete @structfields. |
78c8ab4f PP |
1583 | |
1584 | You can create a structure field type | |
1585 | with bt_ctf_field_type_structure_create(). This function creates | |
1586 | an empty structure field type, with no fields. | |
1587 | ||
1588 | You can add a field to a structure field type with | |
1589 | bt_ctf_field_type_structure_add_field(). Two fields in a structure | |
1590 | field type cannot have the same name. | |
1591 | ||
1592 | You can set the \em minimum alignment of the structure fields described | |
1593 | by a structure field type with the common | |
1594 | bt_ctf_field_type_set_alignment() function. The \em effective alignment | |
1595 | of the structure fields described by a structure field type, as per | |
1596 | <a href="http://diamon.org/ctf/">CTF</a>, is the \em maximum value amongst | |
1597 | the effective alignments of all its fields. Note that the effective | |
4089d5a6 | 1598 | alignment of @varfields is always 1. |
78c8ab4f PP |
1599 | |
1600 | You can set the byte order of <em>all the contained fields</em>, | |
1601 | recursively, of a structure field type with the common | |
1602 | bt_ctf_field_type_set_byte_order() function. | |
1603 | ||
1604 | @sa ctfirstructfield | |
1605 | @sa ctfirfieldtypes | |
1606 | ||
1607 | @addtogroup ctfirstructfieldtype | |
1608 | @{ | |
1609 | */ | |
1610 | ||
1611 | /** | |
4089d5a6 | 1612 | @brief Creates a default, empty @structft. |
78c8ab4f PP |
1613 | |
1614 | @returns Created structure field type, | |
1615 | or \c NULL on error. | |
1616 | ||
1617 | @postsuccessrefcountret1 | |
1618 | */ | |
1619 | extern struct bt_ctf_field_type *bt_ctf_field_type_structure_create(void); | |
1620 | ||
1621 | /** | |
4089d5a6 PP |
1622 | @brief Returns the number of fields contained in the |
1623 | @structft \p struct_field_type. | |
78c8ab4f PP |
1624 | |
1625 | @param[in] struct_field_type Structure field type of which to get | |
1626 | the number of contained fields. | |
1627 | @returns Number of fields contained in | |
1628 | \p struct_field_type, or a negative | |
1629 | value on error. | |
1630 | ||
1631 | @prenotnull{struct_field_type} | |
1632 | @preisstructft{struct_field_type} | |
1633 | @postrefcountsame{struct_field_type} | |
1634 | */ | |
074ee56d | 1635 | extern int bt_ctf_field_type_structure_get_field_count( |
78c8ab4f | 1636 | struct bt_ctf_field_type *struct_field_type); |
b92ddaaa | 1637 | |
78c8ab4f | 1638 | /** |
4089d5a6 PP |
1639 | @brief Returns the field of the @structft \p struct_field_type |
1640 | at index \p index. | |
78c8ab4f PP |
1641 | |
1642 | On success, the field's type is placed in \p *field_type if | |
1643 | \p field_type is not \c NULL. The field's name is placed in | |
1644 | \p *field_name if \p field_name is not \c NULL. | |
1645 | \p struct_field_type remains the sole owner of \p *field_name. | |
1646 | ||
1647 | @param[in] struct_field_type Structure field type of which to get | |
1648 | the field at index \p index. | |
1649 | @param[out] field_name Returned name of the field at index | |
1650 | \p index (can be \c NULL). | |
1651 | @param[out] field_type Returned field type of the field | |
1652 | at index \p index (can be \c NULL). | |
1653 | @param[in] index Index of the field to get from | |
1654 | \p struct_field_type. | |
1655 | @returns 0 on success, or a negative value on error. | |
1656 | ||
1657 | @prenotnull{struct_field_type} | |
1658 | @preisstructft{struct_field_type} | |
1659 | @pre \p index is lesser than the number of fields contained in the | |
1660 | structure field type \p struct_field_type (see | |
1661 | bt_ctf_field_type_structure_get_field_count()). | |
1662 | @postrefcountsame{struct_field_type} | |
1663 | @post <strong>On success</strong>, the returned field's type is placed | |
1664 | in \p *field_type and its reference count is incremented. | |
1665 | ||
1666 | @sa bt_ctf_field_type_structure_get_field_type_by_name(): Finds a | |
1667 | structure field type's field by name. | |
1668 | */ | |
b92ddaaa | 1669 | extern int bt_ctf_field_type_structure_get_field( |
78c8ab4f | 1670 | struct bt_ctf_field_type *struct_field_type, |
b92ddaaa | 1671 | const char **field_name, struct bt_ctf_field_type **field_type, |
074ee56d | 1672 | int index); |
b92ddaaa | 1673 | |
78c8ab4f PP |
1674 | /** |
1675 | @brief Returns the type of the field named \p field_name found in | |
4089d5a6 | 1676 | the @structft \p struct_field_type. |
78c8ab4f PP |
1677 | |
1678 | @param[in] struct_field_type Structure field type of which to get | |
1679 | a field's type. | |
1680 | @param[in] field_name Name of the field to find. | |
1681 | @returns Type of the field named \p field_name in | |
1682 | \p struct_field_type, or | |
1683 | \c NULL on error. | |
1684 | ||
1685 | @prenotnull{struct_field_type} | |
1686 | @prenotnull{field_name} | |
1687 | @preisstructft{struct_field_type} | |
1688 | @postrefcountsame{struct_field_type} | |
1689 | @postsuccessrefcountretinc | |
1690 | ||
1691 | @sa bt_ctf_field_type_structure_get_field(): Finds a | |
1692 | structure field type's field by index. | |
1693 | */ | |
b92ddaaa JG |
1694 | extern |
1695 | struct bt_ctf_field_type *bt_ctf_field_type_structure_get_field_type_by_name( | |
78c8ab4f PP |
1696 | struct bt_ctf_field_type *struct_field_type, |
1697 | const char *field_name); | |
b92ddaaa | 1698 | |
78c8ab4f | 1699 | /** |
4089d5a6 PP |
1700 | @brief Adds a field named \p field_name with the @ft |
1701 | \p field_type to the @structft \p struct_field_type. | |
78c8ab4f PP |
1702 | |
1703 | On success, \p field_type becomes the child of \p struct_field_type. | |
1704 | ||
1705 | This function adds the new field after the current last field of | |
1706 | \p struct_field_type (append mode). | |
1707 | ||
1708 | You \em cannot add a field named \p field_name if there's already a | |
1709 | field named \p field_name in \p struct_field_type. | |
1710 | ||
1711 | @param[in] struct_field_type Structure field type to which to add | |
1712 | a new field. | |
1713 | @param[in] field_type Field type of the field to add to | |
1714 | \p struct_field_type. | |
1715 | @param[in] field_name Name of the field to add to | |
1716 | \p struct_field_type | |
1717 | (copied on success). | |
1718 | @returns 0 on success, or a negative value on error. | |
1719 | ||
1720 | @prenotnull{struct_field_type} | |
1721 | @prenotnull{field_type} | |
1722 | @prenotnull{field_name} | |
1723 | @preisstructft{struct_field_type} | |
1724 | @pre \p field_type is not and does not contain \p struct_field_type, | |
1725 | recursively, as a field's type. | |
1726 | @prehot{struct_field_type} | |
1727 | @postrefcountsame{struct_field_type} | |
1728 | @postsuccessrefcountinc{field_type} | |
1729 | */ | |
1730 | extern int bt_ctf_field_type_structure_add_field( | |
1731 | struct bt_ctf_field_type *struct_field_type, | |
1732 | struct bt_ctf_field_type *field_type, | |
1733 | const char *field_name); | |
b92ddaaa | 1734 | |
78c8ab4f | 1735 | /** @} */ |
b92ddaaa | 1736 | |
78c8ab4f PP |
1737 | /** |
1738 | @defgroup ctfirarrayfieldtype CTF IR array field type | |
1739 | @ingroup ctfirfieldtypes | |
1740 | @brief CTF IR array field type. | |
adc315b8 | 1741 | |
78c8ab4f PP |
1742 | @code |
1743 | #include <babeltrace/ctf-ir/field-types.h> | |
1744 | @endcode | |
d9b1ab6d | 1745 | |
78c8ab4f | 1746 | A CTF IR <strong><em>array field type</em></strong> is a field type that |
4089d5a6 | 1747 | you can use to create concrete @arrayfields. |
adc315b8 | 1748 | |
78c8ab4f PP |
1749 | You can create an array field type |
1750 | with bt_ctf_field_type_array_create(). This function needs | |
4089d5a6 PP |
1751 | the @ft of the fields contained by the array fields described by the |
1752 | array field type to create. | |
b92ddaaa | 1753 | |
78c8ab4f PP |
1754 | @sa ctfirarrayfield |
1755 | @sa ctfirfieldtypes | |
b92ddaaa | 1756 | |
78c8ab4f PP |
1757 | @addtogroup ctfirarrayfieldtype |
1758 | @{ | |
1759 | */ | |
b92ddaaa | 1760 | |
78c8ab4f | 1761 | /** |
4089d5a6 | 1762 | @brief Creates a default @arrayft with |
78c8ab4f | 1763 | \p element_field_type as the field type of the fields contained |
4089d5a6 | 1764 | in its described @arrayfields of length \p length. |
78c8ab4f PP |
1765 | |
1766 | @param[in] element_field_type Field type of the fields contained in | |
1767 | the array fields described by the | |
1768 | created array field type. | |
1769 | @param[in] length Length of the array fields described by | |
1770 | the created array field type. | |
1771 | @returns Created array field type, or | |
1772 | \c NULL on error. | |
1773 | ||
1774 | @prenotnull{element_field_type} | |
1775 | @postsuccessrefcountinc{element_field_type} | |
1776 | @postsuccessrefcountret1 | |
1777 | */ | |
adc315b8 | 1778 | extern struct bt_ctf_field_type *bt_ctf_field_type_array_create( |
78c8ab4f PP |
1779 | struct bt_ctf_field_type *element_field_type, |
1780 | unsigned int length); | |
b92ddaaa | 1781 | |
78c8ab4f | 1782 | /** |
4089d5a6 PP |
1783 | @brief Returns the @ft of the @fields contained in |
1784 | the @arrayfields described by the @arrayft \p array_field_type. | |
78c8ab4f PP |
1785 | |
1786 | @param[in] array_field_type Array field type of which to get | |
1787 | the type of the fields contained in its | |
1788 | described array fields. | |
1789 | @returns Type of the fields contained in the | |
1790 | array fields described by | |
1791 | \p array_field_type, or \c NULL | |
1792 | on error. | |
1793 | ||
1794 | @prenotnull{array_field_type} | |
1795 | @preisarrayft{array_field_type} | |
1796 | @postrefcountsame{array_field_type} | |
1797 | @postsuccessrefcountretinc | |
1798 | */ | |
b92ddaaa | 1799 | extern struct bt_ctf_field_type *bt_ctf_field_type_array_get_element_type( |
78c8ab4f | 1800 | struct bt_ctf_field_type *array_field_type); |
b92ddaaa | 1801 | |
78c8ab4f | 1802 | /** |
4089d5a6 PP |
1803 | @brief Returns the number of @fields contained in the |
1804 | @arrayfields described by the @arrayft \p array_field_type. | |
78c8ab4f PP |
1805 | |
1806 | @param[in] array_field_type Array field type of which to get | |
1807 | the number of fields contained in its | |
1808 | described array fields. | |
1809 | @returns Number of fields contained in the | |
1810 | array fields described by | |
1811 | \p array_field_type, or a negative value | |
1812 | on error. | |
1813 | ||
1814 | @prenotnull{array_field_type} | |
1815 | @preisarrayft{array_field_type} | |
1816 | @postrefcountsame{array_field_type} | |
1817 | */ | |
b92ddaaa | 1818 | extern int64_t bt_ctf_field_type_array_get_length( |
78c8ab4f | 1819 | struct bt_ctf_field_type *array_field_type); |
adc315b8 | 1820 | |
78c8ab4f | 1821 | /** @} */ |
adc315b8 | 1822 | |
78c8ab4f PP |
1823 | /** |
1824 | @defgroup ctfirseqfieldtype CTF IR sequence field type | |
1825 | @ingroup ctfirfieldtypes | |
1826 | @brief CTF IR sequence field type. | |
b92ddaaa | 1827 | |
78c8ab4f PP |
1828 | @code |
1829 | #include <babeltrace/ctf-ir/field-types.h> | |
1830 | @endcode | |
b92ddaaa | 1831 | |
78c8ab4f | 1832 | A CTF IR <strong><em>sequence field type</em></strong> is |
4089d5a6 | 1833 | a field type that you can use to create concrete @seqfields. |
adc315b8 | 1834 | |
78c8ab4f | 1835 | You can create a sequence field type with |
4089d5a6 | 1836 | bt_ctf_field_type_sequence_create(). This function needs the @ft |
78c8ab4f PP |
1837 | of the fields contained by the sequence fields described by the created |
1838 | sequence field type. This function also needs the length name of the | |
1839 | sequence field type to create. The length name is used to automatically | |
1840 | resolve the length's field type. See \ref ctfirfieldtypes to learn more | |
1841 | about the automatic resolving. | |
b92ddaaa | 1842 | |
78c8ab4f PP |
1843 | @sa ctfirseqfield |
1844 | @sa ctfirfieldtypes | |
adc315b8 | 1845 | |
78c8ab4f PP |
1846 | @addtogroup ctfirseqfieldtype |
1847 | @{ | |
1848 | */ | |
b92ddaaa | 1849 | |
78c8ab4f | 1850 | /** |
4089d5a6 PP |
1851 | @brief Creates a default @seqft with \p element_field_type as the |
1852 | @ft of the @fields contained in its described @seqfields | |
1853 | with the length name \p length_name. | |
78c8ab4f PP |
1854 | |
1855 | \p length_name can be an absolute or relative reference. See | |
1856 | <a href="http://diamon.org/ctf/">CTF</a> for more details. | |
1857 | ||
1858 | @param[in] element_field_type Field type of the fields contained in | |
1859 | the sequence fields described by the | |
1860 | created sequence field type. | |
1861 | @param[in] length_name Length name (copied on success). | |
1862 | @returns Created array field type, or | |
1863 | \c NULL on error. | |
1864 | ||
1865 | @prenotnull{element_field_type} | |
1866 | @prenotnull{length_name} | |
1867 | @postsuccessrefcountinc{element_field_type} | |
1868 | @postsuccessrefcountret1 | |
1869 | */ | |
1870 | extern struct bt_ctf_field_type *bt_ctf_field_type_sequence_create( | |
1871 | struct bt_ctf_field_type *element_field_type, | |
1872 | const char *length_name); | |
adc315b8 | 1873 | |
78c8ab4f | 1874 | /** |
4089d5a6 PP |
1875 | @brief Returns the @ft of the @fields contained in the @seqft |
1876 | described by the @seqft \p sequence_field_type. | |
78c8ab4f PP |
1877 | |
1878 | @param[in] sequence_field_type Sequence field type of which to get | |
1879 | the type of the fields contained in its | |
1880 | described sequence fields. | |
1881 | @returns Type of the fields contained in the | |
1882 | sequence fields described by | |
1883 | \p sequence_field_type, or \c NULL | |
1884 | on error. | |
1885 | ||
1886 | @prenotnull{sequence_field_type} | |
1887 | @preisseqft{sequence_field_type} | |
1888 | @postrefcountsame{sequence_field_type} | |
1889 | @postsuccessrefcountretinc | |
1890 | */ | |
1891 | extern struct bt_ctf_field_type *bt_ctf_field_type_sequence_get_element_type( | |
1892 | struct bt_ctf_field_type *sequence_field_type); | |
b92ddaaa | 1893 | |
78c8ab4f | 1894 | /** |
4089d5a6 | 1895 | @brief Returns the length name of the @seqft \p sequence_field_type. |
adc315b8 | 1896 | |
78c8ab4f PP |
1897 | On success, \p sequence_field_type remains the sole owner of |
1898 | the returned string. | |
b011f6b0 | 1899 | |
78c8ab4f PP |
1900 | @param[in] sequence_field_type Sequence field type of which to get the |
1901 | length name. | |
1902 | @returns Length name of \p sequence_field_type, | |
1903 | or \c NULL on error. | |
1904 | ||
1905 | @prenotnull{sequence_field_type} | |
1906 | @preisseqft{sequence_field_type} | |
1907 | ||
1908 | @sa bt_ctf_field_type_sequence_get_length_field_path(): Returns the | |
1909 | length's CTF IR field path of a given sequence field type. | |
1910 | */ | |
1911 | extern const char *bt_ctf_field_type_sequence_get_length_field_name( | |
1912 | struct bt_ctf_field_type *sequence_field_type); | |
1913 | ||
1914 | /** | |
4089d5a6 PP |
1915 | @brief Returns the length's CTF IR field path of the @seqft |
1916 | \p sequence_field_type. | |
78c8ab4f PP |
1917 | |
1918 | The length's field path of a sequence field type is set when automatic | |
1919 | resolving is performed (see \ref ctfirfieldtypes). | |
1920 | ||
1921 | @param[in] sequence_field_type Sequence field type of which to get the | |
1922 | length's field path. | |
1923 | @returns Length's field path of | |
1924 | \p sequence_field_type, or | |
1925 | \c NULL if the length's field path is | |
1926 | not set yet is not set or on error. | |
1927 | ||
1928 | @prenotnull{sequence_field_type} | |
1929 | @preisseqft{sequence_field_type} | |
1930 | @postsuccessrefcountretinc | |
1931 | ||
1932 | @sa bt_ctf_field_type_sequence_get_length_field_name(): Returns the | |
1933 | length's name of a given sequence field type. | |
1934 | */ | |
b011f6b0 | 1935 | extern struct bt_ctf_field_path *bt_ctf_field_type_sequence_get_length_field_path( |
78c8ab4f | 1936 | struct bt_ctf_field_type *sequence_field_type); |
b011f6b0 | 1937 | |
78c8ab4f | 1938 | /** @} */ |
265e809c | 1939 | |
78c8ab4f PP |
1940 | /** |
1941 | @defgroup ctfirvarfieldtype CTF IR variant field type | |
1942 | @ingroup ctfirfieldtypes | |
1943 | @brief CTF IR variant field type. | |
1944 | ||
1945 | @code | |
1946 | #include <babeltrace/ctf-ir/field-types.h> | |
1947 | @endcode | |
1948 | ||
1949 | A CTF IR <strong><em>variant field type</em></strong> is | |
4089d5a6 PP |
1950 | a field type that you can use to create concrete @varfields. |
1951 | ||
1952 | You can create a variant field type with | |
1953 | bt_ctf_field_type_variant_create(). This function expects you to pass | |
1954 | both the tag's @enumft and the tag name of the variant field type to | |
1955 | create. The tag's field type is optional, as the Babeltrace system can | |
1956 | automatically resolve it using the tag name. You can leave the tag name | |
1957 | to \c NULL initially, and set it later with | |
1958 | bt_ctf_field_type_variant_set_tag_name(). The tag name must be set when | |
1959 | the variant field type is frozen. See \ref ctfirfieldtypes to learn more | |
1960 | about the automatic resolving and the conditions under which a field | |
1961 | type can be frozen. | |
78c8ab4f PP |
1962 | |
1963 | You can add a field to a variant field type with | |
1964 | bt_ctf_field_type_variant_add_field(). All the field names of a | |
4089d5a6 | 1965 | variant field type \em must exist as mapping names in its tag's @enumft. |
78c8ab4f | 1966 | |
4089d5a6 | 1967 | The effective alignment of the @varfields described by a |
78c8ab4f | 1968 | variant field type is always 1, but the individual fields of a |
4089d5a6 | 1969 | @varfield can have custom alignments. |
78c8ab4f PP |
1970 | |
1971 | You can set the byte order of <em>all the contained fields</em>, | |
1972 | recursively, of a variant field type with the common | |
1973 | bt_ctf_field_type_set_byte_order() function. | |
1974 | ||
1975 | @sa ctfirvarfield | |
1976 | @sa ctfirfieldtypes | |
1977 | ||
1978 | @addtogroup ctfirvarfieldtype | |
1979 | @{ | |
1980 | */ | |
06629ab3 | 1981 | |
78c8ab4f | 1982 | /** |
4089d5a6 | 1983 | @brief Creates a default, empty @varft with the tag's @enumft |
78c8ab4f PP |
1984 | \p tag_field_type and the tag name \p tag_name. |
1985 | ||
1986 | \p tag_field_type can be \c NULL; the tag's field type can be | |
1987 | automatically resolved from the variant field type's tag name (see | |
1988 | \ref ctfirfieldtypes). If \p tag_name is \c NULL, it \em must be set | |
1989 | with bt_ctf_field_type_variant_set_tag_name() \em before the variant | |
1990 | field type is frozen. | |
1991 | ||
1992 | \p tag_name can be an absolute or relative reference. See | |
1993 | <a href="http://diamon.org/ctf/">CTF</a> for more details. | |
1994 | ||
1995 | @param[in] tag_field_type Tag's enumeration field type | |
1996 | (can be \c NULL). | |
1997 | @param[in] tag_name Tag name (copied on success, | |
1998 | can be \c NULL). | |
1999 | @returns Created variant field type, or | |
2000 | \c NULL on error. | |
2001 | ||
2002 | @pre \p tag_field_type is an enumeration field type or \c NULL. | |
2003 | @post <strong>On success, if \p tag_field_type is not \c NULL</strong>, | |
2004 | its reference count is incremented. | |
2005 | @postsuccessrefcountret1 | |
2006 | */ | |
2007 | extern struct bt_ctf_field_type *bt_ctf_field_type_variant_create( | |
2008 | struct bt_ctf_field_type *tag_field_type, | |
2009 | const char *tag_name); | |
b92ddaaa | 2010 | |
78c8ab4f | 2011 | /** |
4089d5a6 | 2012 | @brief Returns the tag's @enumft of the @varft \p variant_field_type. |
78c8ab4f PP |
2013 | |
2014 | @param[in] variant_field_type Variant field type of which to get | |
2015 | the tag's enumeration field type. | |
2016 | @returns Tag's enumeration field type of | |
2017 | \p variant_field_type, or \c NULL if the | |
2018 | tag's field type is not set or on | |
2019 | error. | |
2020 | ||
2021 | @prenotnull{variant_field_type} | |
2022 | @preisvarft{variant_field_type} | |
2023 | @postrefcountsame{variant_field_type} | |
2024 | @postsuccessrefcountretinc | |
2025 | */ | |
2026 | extern struct bt_ctf_field_type *bt_ctf_field_type_variant_get_tag_type( | |
2027 | struct bt_ctf_field_type *variant_field_type); | |
56db8d7a | 2028 | |
78c8ab4f | 2029 | /** |
4089d5a6 | 2030 | @brief Returns the tag name of the @varft \p variant_field_type. |
78c8ab4f PP |
2031 | |
2032 | On success, \p variant_field_type remains the sole owner of | |
2033 | the returned string. | |
2034 | ||
2035 | @param[in] variant_field_type Variant field type of which to get the | |
2036 | tag name. | |
2037 | @returns Tag name of \p variant_field_type, or | |
2038 | \c NULL if the tag name is not set or | |
2039 | on error. | |
2040 | ||
2041 | @prenotnull{variant_field_type} | |
2042 | @preisvarft{variant_field_type} | |
2043 | ||
2044 | @sa bt_ctf_field_type_variant_set_tag_name(): Sets the tag name of | |
2045 | a given variant field type. | |
2046 | @sa bt_ctf_field_type_variant_get_tag_field_path(): Returns the tag's | |
2047 | CTF IR field path of a given variant field type. | |
2048 | */ | |
2049 | extern const char *bt_ctf_field_type_variant_get_tag_name( | |
2050 | struct bt_ctf_field_type *variant_field_type); | |
56db8d7a | 2051 | |
78c8ab4f | 2052 | /** |
4089d5a6 | 2053 | @brief Sets the tag name of the @varft \p variant_field_type. |
78c8ab4f PP |
2054 | |
2055 | \p tag_name can be an absolute or relative reference. See | |
2056 | <a href="http://diamon.org/ctf/">CTF</a> for more details. | |
2057 | ||
2058 | @param[in] variant_field_type Variant field type of which to set | |
2059 | the tag name. | |
2060 | @param[in] tag_name Tag name of \p variant_field_type | |
2061 | (copied on success). | |
2062 | @returns 0 on success, or a negative value on error. | |
2063 | ||
2064 | @prenotnull{variant_field_type} | |
2065 | @prenotnull{name} | |
2066 | @prehot{variant_field_type} | |
2067 | @postrefcountsame{variant_field_type} | |
2068 | ||
2069 | @sa bt_ctf_field_type_variant_get_tag_name(): Returns the tag name of | |
2070 | a given variant field type. | |
2071 | */ | |
2072 | extern int bt_ctf_field_type_variant_set_tag_name( | |
2073 | struct bt_ctf_field_type *variant_field_type, | |
2074 | const char *tag_name); | |
56db8d7a | 2075 | |
78c8ab4f | 2076 | /** |
4089d5a6 PP |
2077 | @brief Returns the tag's CTF IR field path of the @varft |
2078 | \p variant_field_type. | |
78c8ab4f PP |
2079 | |
2080 | The tag's field path of a variant field type is set when automatic | |
2081 | resolving is performed (see \ref ctfirfieldtypes). | |
2082 | ||
2083 | @param[in] variant_field_type Variant field type of which to get the | |
2084 | tag's field path. | |
2085 | @returns Tag's field path of | |
2086 | \p variant_field_type, or | |
2087 | \c NULL if the tag's field path is not | |
2088 | set yet is not set or on error. | |
2089 | ||
2090 | @prenotnull{variant_field_type} | |
2091 | @preisvarft{variant_field_type} | |
2092 | @postsuccessrefcountretinc | |
2093 | ||
2094 | @sa bt_ctf_field_type_variant_get_tag_name(): Returns the tag's | |
2095 | name of a given variant field type. | |
2096 | */ | |
2097 | extern struct bt_ctf_field_path *bt_ctf_field_type_variant_get_tag_field_path( | |
2098 | struct bt_ctf_field_type *variant_field_type); | |
56db8d7a | 2099 | |
78c8ab4f | 2100 | /** |
4089d5a6 PP |
2101 | @brief Returns the number of fields (choices) contained in the @varft |
2102 | \p variant_field_type. | |
78c8ab4f PP |
2103 | |
2104 | @param[in] variant_field_type Variant field type of which to get | |
2105 | the number of contained fields. | |
2106 | @returns Number of fields contained in | |
2107 | \p variant_field_type, or a negative | |
2108 | value on error. | |
2109 | ||
2110 | @prenotnull{variant_field_type} | |
2111 | @preisvarft{variant_field_type} | |
2112 | @postrefcountsame{variant_field_type} | |
2113 | */ | |
2114 | extern int bt_ctf_field_type_variant_get_field_count( | |
2115 | struct bt_ctf_field_type *variant_field_type); | |
56db8d7a | 2116 | |
78c8ab4f | 2117 | /** |
4089d5a6 PP |
2118 | @brief Returns the field (choice) of the @varft \p variant_field_type |
2119 | at index \p index. | |
78c8ab4f PP |
2120 | |
2121 | On success, the field's type is placed in \p *field_type if | |
2122 | \p field_type is not \c NULL. The field's name is placed in | |
2123 | \p *field_name if \p field_name is not \c NULL. | |
2124 | \p variant_field_type remains the sole owner of \p *field_name. | |
2125 | ||
2126 | @param[in] variant_field_type Variant field type of which to get | |
2127 | the field at index \p index. | |
2128 | @param[out] field_name Returned name of the field at index | |
2129 | \p index (can be \c NULL). | |
2130 | @param[out] field_type Returned field type of the field | |
2131 | at index \p index (can be \c NULL). | |
2132 | @param[in] index Index of the field to get from | |
2133 | \p variant_field_type. | |
2134 | @returns 0 on success, or a negative value on error. | |
2135 | ||
2136 | @prenotnull{variant_field_type} | |
2137 | @preisvarft{variant_field_type} | |
2138 | @pre \p index is lesser than the number of fields contained in the | |
2139 | variant field type \p variant_field_type (see | |
2140 | bt_ctf_field_type_variant_get_field_count()). | |
2141 | @postrefcountsame{variant_field_type} | |
2142 | @post <strong>On success</strong>, the returned field's type is placed | |
2143 | in \p *field_type and its reference count is incremented. | |
2144 | ||
2145 | @sa bt_ctf_field_type_variant_get_field_type_by_name(): Finds a variant | |
2146 | field type's field by name. | |
2147 | @sa bt_ctf_field_type_variant_get_field_type_from_tag(): Finds a variant | |
2148 | field type's field by current tag value. | |
2149 | */ | |
2150 | extern int bt_ctf_field_type_variant_get_field( | |
2151 | struct bt_ctf_field_type *variant_field_type, | |
2152 | const char **field_name, | |
2153 | struct bt_ctf_field_type **field_type, int index); | |
56db8d7a | 2154 | |
78c8ab4f PP |
2155 | /** |
2156 | @brief Returns the type of the field (choice) named \p field_name | |
4089d5a6 | 2157 | found in the @varft \p variant_field_type. |
78c8ab4f PP |
2158 | |
2159 | @param[in] variant_field_type Variant field type of which to get | |
2160 | a field's type. | |
2161 | @param[in] field_name Name of the field to find. | |
2162 | @returns Type of the field named \p field_name in | |
2163 | \p variant_field_type, or | |
2164 | \c NULL on error. | |
2165 | ||
2166 | @prenotnull{variant_field_type} | |
2167 | @prenotnull{field_name} | |
2168 | @preisvarft{variant_field_type} | |
2169 | @postrefcountsame{variant_field_type} | |
2170 | @postsuccessrefcountretinc | |
2171 | ||
2172 | @sa bt_ctf_field_type_variant_get_field(): Finds a variant field type's | |
2173 | field by index. | |
2174 | @sa bt_ctf_field_type_variant_get_field_type_from_tag(): Finds a variant | |
2175 | field type's field by current tag value. | |
2176 | */ | |
2177 | extern | |
2178 | struct bt_ctf_field_type *bt_ctf_field_type_variant_get_field_type_by_name( | |
2179 | struct bt_ctf_field_type *variant_field_type, | |
2180 | const char *field_name); | |
56db8d7a | 2181 | |
78c8ab4f PP |
2182 | /** |
2183 | @brief Returns the type of the field (choice) selected by the value of | |
4089d5a6 | 2184 | the @enumfield \p tag_field in the @varft \p variant_field_type. |
78c8ab4f PP |
2185 | |
2186 | \p tag_field is the current tag value. | |
2187 | ||
2188 | The field type of \p tag_field, as returned by bt_ctf_field_get_type(), | |
2189 | \em must be equivalent to the field type returned by | |
2190 | bt_ctf_field_type_variant_get_tag_type() for \p variant_field_type. | |
2191 | ||
2192 | @param[in] variant_field_type Variant field type of which to get | |
2193 | a field's type. | |
2194 | @param[in] tag_field Current tag value (variant field type's | |
2195 | selector). | |
2196 | @returns Type of the field selected by | |
2197 | \p tag_field in \p variant_field_type, | |
2198 | or \c NULL on error. | |
2199 | ||
2200 | @prenotnull{variant_field_type} | |
2201 | @prenotnull{tag_field} | |
2202 | @preisvarft{variant_field_type} | |
2203 | @preisenumfield{tag_field} | |
2204 | @postrefcountsame{variant_field_type} | |
2205 | @postrefcountsame{tag_field} | |
2206 | @postsuccessrefcountretinc | |
2207 | ||
2208 | @sa bt_ctf_field_type_variant_get_field(): Finds a variant field type's | |
2209 | field by index. | |
2210 | @sa bt_ctf_field_type_variant_get_field_type_by_name(): Finds a variant | |
2211 | field type's field by name. | |
2212 | */ | |
2213 | extern | |
2214 | struct bt_ctf_field_type *bt_ctf_field_type_variant_get_field_type_from_tag( | |
2215 | struct bt_ctf_field_type *variant_field_type, | |
2216 | struct bt_ctf_field *tag_field); | |
2217 | ||
2218 | /** | |
4089d5a6 PP |
2219 | @brief Adds a field (a choice) named \p field_name with the @ft |
2220 | \p field_type to the @varft \p variant_field_type. | |
78c8ab4f PP |
2221 | |
2222 | On success, \p field_type becomes the child of \p variant_field_type. | |
2223 | ||
2224 | You \em cannot add a field named \p field_name if there's already a | |
2225 | field named \p field_name in \p variant_field_type. | |
2226 | ||
2227 | \p field_name \em must name an existing mapping in the tag's | |
2228 | enumeration field type of \p variant_field_type. | |
2229 | ||
2230 | @param[in] variant_field_type Variant field type to which to add | |
2231 | a new field. | |
2232 | @param[in] field_type Field type of the field to add to | |
2233 | \p variant_field_type. | |
2234 | @param[in] field_name Name of the field to add to | |
2235 | \p variant_field_type | |
2236 | (copied on success). | |
2237 | @returns 0 on success, or a negative value on error. | |
2238 | ||
2239 | @prenotnull{variant_field_type} | |
2240 | @prenotnull{field_type} | |
2241 | @prenotnull{field_name} | |
2242 | @preisvarft{variant_field_type} | |
2243 | @pre \p field_type is not and does not contain \p variant_field_type, | |
2244 | recursively, as a field's type. | |
2245 | @prehot{variant_field_type} | |
2246 | @postrefcountsame{variant_field_type} | |
2247 | @postsuccessrefcountinc{field_type} | |
2248 | */ | |
2249 | extern int bt_ctf_field_type_variant_add_field( | |
2250 | struct bt_ctf_field_type *variant_field_type, | |
2251 | struct bt_ctf_field_type *field_type, | |
2252 | const char *field_name); | |
2253 | ||
2254 | /** @} */ | |
56db8d7a | 2255 | |
adc315b8 JG |
2256 | #ifdef __cplusplus |
2257 | } | |
2258 | #endif | |
2259 | ||
2e33ac5a | 2260 | #endif /* BABELTRACE_CTF_IR_FIELD_TYPES_H */ |