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bc37ae52 JG |
1 | /* |
2 | * trace.c | |
3 | * | |
4 | * Babeltrace CTF IR - Trace | |
5 | * | |
6 | * Copyright 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
7 | * | |
8 | * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
9 | * | |
10 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
11 | * of this software and associated documentation files (the "Software"), to deal | |
12 | * in the Software without restriction, including without limitation the rights | |
13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
14 | * copies of the Software, and to permit persons to whom the Software is | |
15 | * furnished to do so, subject to the following conditions: | |
16 | * | |
17 | * The above copyright notice and this permission notice shall be included in | |
18 | * all copies or substantial portions of the Software. | |
19 | * | |
20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
23 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
24 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
25 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
26 | * SOFTWARE. | |
27 | */ | |
28 | ||
29 | #include <babeltrace/ctf-ir/trace-internal.h> | |
30 | #include <babeltrace/ctf-ir/clock-internal.h> | |
31 | #include <babeltrace/ctf-ir/stream-internal.h> | |
32 | #include <babeltrace/ctf-ir/stream-class-internal.h> | |
33 | #include <babeltrace/ctf-writer/functor-internal.h> | |
34 | #include <babeltrace/ctf-ir/event-types-internal.h> | |
654c1444 | 35 | #include <babeltrace/ctf-ir/utils.h> |
bc37ae52 JG |
36 | #include <babeltrace/compiler.h> |
37 | ||
38 | #define DEFAULT_IDENTIFIER_SIZE 128 | |
39 | #define DEFAULT_METADATA_STRING_SIZE 4096 | |
40 | ||
41 | static | |
42 | void environment_variable_destroy(struct environment_variable *var); | |
43 | static | |
44 | void bt_ctf_trace_destroy(struct bt_ctf_ref *ref); | |
45 | static | |
46 | int init_trace_packet_header(struct bt_ctf_trace *trace); | |
47 | ||
bc37ae52 JG |
48 | static |
49 | const unsigned int field_type_aliases_alignments[] = { | |
50 | [FIELD_TYPE_ALIAS_UINT5_T] = 1, | |
51 | [FIELD_TYPE_ALIAS_UINT8_T ... FIELD_TYPE_ALIAS_UINT16_T] = 8, | |
52 | [FIELD_TYPE_ALIAS_UINT27_T] = 1, | |
53 | [FIELD_TYPE_ALIAS_UINT32_T ... FIELD_TYPE_ALIAS_UINT64_T] = 8, | |
54 | }; | |
55 | ||
56 | static | |
57 | const unsigned int field_type_aliases_sizes[] = { | |
58 | [FIELD_TYPE_ALIAS_UINT5_T] = 5, | |
59 | [FIELD_TYPE_ALIAS_UINT8_T] = 8, | |
60 | [FIELD_TYPE_ALIAS_UINT16_T] = 16, | |
61 | [FIELD_TYPE_ALIAS_UINT27_T] = 27, | |
62 | [FIELD_TYPE_ALIAS_UINT32_T] = 32, | |
63 | [FIELD_TYPE_ALIAS_UINT64_T] = 64, | |
64 | }; | |
65 | ||
bc37ae52 JG |
66 | struct bt_ctf_trace *bt_ctf_trace_create(void) |
67 | { | |
68 | struct bt_ctf_trace *trace = NULL; | |
69 | ||
70 | trace = g_new0(struct bt_ctf_trace, 1); | |
71 | if (!trace) { | |
72 | goto error; | |
73 | } | |
74 | ||
75 | bt_ctf_trace_set_byte_order(trace, BT_CTF_BYTE_ORDER_NATIVE); | |
76 | bt_ctf_ref_init(&trace->ref_count); | |
77 | trace->environment = g_ptr_array_new_with_free_func( | |
78 | (GDestroyNotify)environment_variable_destroy); | |
79 | trace->clocks = g_ptr_array_new_with_free_func( | |
80 | (GDestroyNotify)bt_ctf_clock_put); | |
81 | trace->streams = g_ptr_array_new_with_free_func( | |
82 | (GDestroyNotify)bt_ctf_stream_put); | |
83 | trace->stream_classes = g_ptr_array_new_with_free_func( | |
84 | (GDestroyNotify)bt_ctf_stream_class_put); | |
85 | if (!trace->environment || !trace->clocks || | |
86 | !trace->stream_classes || !trace->streams) { | |
87 | goto error_destroy; | |
88 | } | |
89 | ||
90 | /* Generate a trace UUID */ | |
91 | uuid_generate(trace->uuid); | |
92 | if (init_trace_packet_header(trace)) { | |
93 | goto error_destroy; | |
94 | } | |
95 | ||
96 | return trace; | |
97 | ||
98 | error_destroy: | |
99 | bt_ctf_trace_destroy(&trace->ref_count); | |
100 | trace = NULL; | |
101 | error: | |
102 | return trace; | |
103 | } | |
104 | ||
105 | void bt_ctf_trace_destroy(struct bt_ctf_ref *ref) | |
106 | { | |
107 | struct bt_ctf_trace *trace; | |
108 | ||
109 | if (!ref) { | |
110 | return; | |
111 | } | |
112 | ||
113 | trace = container_of(ref, struct bt_ctf_trace, ref_count); | |
114 | if (trace->environment) { | |
115 | g_ptr_array_free(trace->environment, TRUE); | |
116 | } | |
117 | ||
118 | if (trace->clocks) { | |
119 | g_ptr_array_free(trace->clocks, TRUE); | |
120 | } | |
121 | ||
122 | if (trace->streams) { | |
123 | g_ptr_array_free(trace->streams, TRUE); | |
124 | } | |
125 | ||
126 | if (trace->stream_classes) { | |
127 | g_ptr_array_free(trace->stream_classes, TRUE); | |
128 | } | |
129 | ||
d246b111 | 130 | bt_ctf_field_type_put(trace->packet_header_type); |
bc37ae52 JG |
131 | g_free(trace); |
132 | } | |
133 | ||
134 | struct bt_ctf_stream *bt_ctf_trace_create_stream(struct bt_ctf_trace *trace, | |
135 | struct bt_ctf_stream_class *stream_class) | |
136 | { | |
137 | int ret; | |
138 | int stream_class_found = 0; | |
139 | size_t i; | |
140 | struct bt_ctf_stream *stream = NULL; | |
141 | ||
142 | if (!trace || !stream_class) { | |
143 | goto error; | |
144 | } | |
145 | ||
d246b111 | 146 | stream = bt_ctf_stream_create(stream_class, trace); |
bc37ae52 JG |
147 | if (!stream) { |
148 | goto error; | |
149 | } | |
150 | ||
151 | for (i = 0; i < trace->stream_classes->len; i++) { | |
152 | if (trace->stream_classes->pdata[i] == stream_class) { | |
153 | stream_class_found = 1; | |
154 | } | |
155 | } | |
156 | ||
157 | if (!stream_class_found) { | |
ef0c4a15 JG |
158 | ret = bt_ctf_trace_add_stream_class(trace, stream_class); |
159 | if (ret) { | |
160 | goto error; | |
bc37ae52 | 161 | } |
bc37ae52 JG |
162 | } |
163 | ||
164 | bt_ctf_stream_get(stream); | |
165 | g_ptr_array_add(trace->streams, stream); | |
c35a1669 | 166 | |
bc37ae52 | 167 | return stream; |
bc37ae52 JG |
168 | error: |
169 | bt_ctf_stream_put(stream); | |
170 | return NULL; | |
171 | } | |
172 | ||
173 | int bt_ctf_trace_add_environment_field(struct bt_ctf_trace *trace, | |
174 | const char *name, | |
175 | const char *value) | |
176 | { | |
177 | struct environment_variable *var = NULL; | |
178 | char *escaped_value = NULL; | |
179 | int ret = 0; | |
180 | ||
654c1444 | 181 | if (!trace || !name || !value || bt_ctf_validate_identifier(name)) { |
bc37ae52 JG |
182 | ret = -1; |
183 | goto error; | |
184 | } | |
185 | ||
186 | if (strchr(name, ' ')) { | |
187 | ret = -1; | |
188 | goto error; | |
189 | } | |
190 | ||
191 | var = g_new0(struct environment_variable, 1); | |
192 | if (!var) { | |
193 | ret = -1; | |
194 | goto error; | |
195 | } | |
196 | ||
3487c9f3 | 197 | var->type = BT_ENVIRONMENT_FIELD_TYPE_STRING; |
bc37ae52 JG |
198 | escaped_value = g_strescape(value, NULL); |
199 | if (!escaped_value) { | |
200 | ret = -1; | |
201 | goto error; | |
202 | } | |
203 | ||
204 | var->name = g_string_new(name); | |
3487c9f3 | 205 | var->value.string = g_string_new(escaped_value); |
bc37ae52 | 206 | g_free(escaped_value); |
3487c9f3 | 207 | if (!var->name || !var->value.string) { |
bc37ae52 JG |
208 | ret = -1; |
209 | goto error; | |
210 | } | |
211 | ||
212 | g_ptr_array_add(trace->environment, var); | |
213 | return ret; | |
214 | ||
215 | error: | |
216 | if (var && var->name) { | |
217 | g_string_free(var->name, TRUE); | |
218 | } | |
219 | ||
3487c9f3 JG |
220 | if (var && var->value.string) { |
221 | g_string_free(var->value.string, TRUE); | |
222 | } | |
223 | ||
224 | g_free(var); | |
225 | return ret; | |
226 | } | |
227 | ||
228 | int bt_ctf_trace_add_environment_field_integer(struct bt_ctf_trace *trace, | |
229 | const char *name, | |
e6fa2160 | 230 | int64_t value) |
3487c9f3 JG |
231 | { |
232 | struct environment_variable *var = NULL; | |
233 | int ret = 0; | |
234 | ||
235 | if (!trace || !name) { | |
236 | ret = -1; | |
237 | goto error; | |
238 | } | |
239 | ||
240 | var = g_new0(struct environment_variable, 1); | |
241 | if (!var) { | |
242 | ret = -1; | |
243 | goto error; | |
244 | } | |
245 | ||
246 | var->type = BT_ENVIRONMENT_FIELD_TYPE_INTEGER; | |
247 | var->name = g_string_new(name); | |
248 | var->value.integer = value; | |
249 | if (!var->name) { | |
250 | ret = -1; | |
251 | goto error; | |
252 | } | |
253 | ||
254 | g_ptr_array_add(trace->environment, var); | |
255 | return ret; | |
256 | ||
257 | error: | |
258 | if (var && var->name) { | |
259 | g_string_free(var->name, TRUE); | |
bc37ae52 JG |
260 | } |
261 | ||
262 | g_free(var); | |
263 | return ret; | |
264 | } | |
265 | ||
e6fa2160 JG |
266 | int bt_ctf_trace_get_environment_field_count(struct bt_ctf_trace *trace) |
267 | { | |
268 | int ret = 0; | |
269 | ||
270 | if (!trace) { | |
271 | ret = -1; | |
272 | goto end; | |
273 | } | |
274 | ||
275 | ret = trace->environment->len; | |
276 | end: | |
277 | return ret; | |
278 | } | |
279 | ||
280 | enum bt_environment_field_type | |
281 | bt_ctf_trace_get_environment_field_type(struct bt_ctf_trace *trace, int index) | |
282 | { | |
283 | struct environment_variable *var; | |
284 | enum bt_environment_field_type type = BT_ENVIRONMENT_FIELD_TYPE_UNKNOWN; | |
285 | ||
286 | if (!trace || index < 0 || index >= trace->environment->len) { | |
287 | goto end; | |
288 | } | |
289 | ||
290 | var = g_ptr_array_index(trace->environment, index); | |
291 | type = var->type; | |
292 | end: | |
293 | return type; | |
294 | } | |
295 | ||
296 | const char * | |
297 | bt_ctf_trace_get_environment_field_name(struct bt_ctf_trace *trace, | |
298 | int index) | |
299 | { | |
300 | struct environment_variable *var; | |
301 | const char *ret = NULL; | |
302 | ||
303 | if (!trace || index < 0 || index >= trace->environment->len) { | |
304 | goto end; | |
305 | } | |
306 | ||
307 | var = g_ptr_array_index(trace->environment, index); | |
308 | ret = var->name->str; | |
309 | end: | |
310 | return ret; | |
311 | } | |
312 | ||
313 | const char * | |
314 | bt_ctf_trace_get_environment_field_value_string(struct bt_ctf_trace *trace, | |
315 | int index) | |
316 | { | |
317 | struct environment_variable *var; | |
318 | const char *ret = NULL; | |
319 | ||
320 | if (!trace || index < 0 || index >= trace->environment->len) { | |
321 | goto end; | |
322 | } | |
323 | ||
324 | var = g_ptr_array_index(trace->environment, index); | |
325 | if (var->type != BT_ENVIRONMENT_FIELD_TYPE_STRING) { | |
326 | goto end; | |
327 | } | |
328 | ret = var->value.string->str; | |
329 | end: | |
330 | return ret; | |
331 | } | |
332 | ||
333 | int | |
334 | bt_ctf_trace_get_environment_field_value_integer(struct bt_ctf_trace *trace, | |
335 | int index, int64_t *value) | |
336 | { | |
337 | struct environment_variable *var; | |
338 | int ret = 0; | |
339 | ||
340 | if (!trace || !value || index < 0 || index >= trace->environment->len) { | |
341 | ret = -1; | |
342 | goto end; | |
343 | } | |
344 | ||
345 | var = g_ptr_array_index(trace->environment, index); | |
346 | if (var->type != BT_ENVIRONMENT_FIELD_TYPE_INTEGER) { | |
347 | ret = -1; | |
348 | goto end; | |
349 | } | |
350 | *value = var->value.integer; | |
351 | end: | |
352 | return ret; | |
353 | } | |
354 | ||
bc37ae52 JG |
355 | int bt_ctf_trace_add_clock(struct bt_ctf_trace *trace, |
356 | struct bt_ctf_clock *clock) | |
357 | { | |
358 | int ret = 0; | |
359 | struct search_query query = { .value = clock, .found = 0 }; | |
360 | ||
361 | if (!trace || !clock) { | |
362 | ret = -1; | |
363 | goto end; | |
364 | } | |
365 | ||
366 | /* Check for duplicate clocks */ | |
367 | g_ptr_array_foreach(trace->clocks, value_exists, &query); | |
368 | if (query.found) { | |
369 | ret = -1; | |
370 | goto end; | |
371 | } | |
372 | ||
373 | bt_ctf_clock_get(clock); | |
374 | g_ptr_array_add(trace->clocks, clock); | |
375 | end: | |
376 | return ret; | |
377 | } | |
378 | ||
884cd6c3 JG |
379 | int bt_ctf_trace_get_clock_count(struct bt_ctf_trace *trace) |
380 | { | |
381 | int ret = -1; | |
382 | ||
383 | if (!trace) { | |
384 | goto end; | |
385 | } | |
386 | ||
387 | ret = trace->clocks->len; | |
388 | end: | |
389 | return ret; | |
390 | } | |
391 | ||
392 | struct bt_ctf_clock *bt_ctf_trace_get_clock(struct bt_ctf_trace *trace, | |
393 | int index) | |
394 | { | |
395 | struct bt_ctf_clock *clock = NULL; | |
396 | ||
397 | if (!trace || index < 0 || index >= trace->clocks->len) { | |
398 | goto end; | |
399 | } | |
400 | ||
401 | clock = g_ptr_array_index(trace->clocks, index); | |
402 | bt_ctf_clock_get(clock); | |
403 | end: | |
404 | return clock; | |
405 | } | |
406 | ||
ef0c4a15 JG |
407 | int bt_ctf_trace_add_stream_class(struct bt_ctf_trace *trace, |
408 | struct bt_ctf_stream_class *stream_class) | |
409 | { | |
410 | int ret, i; | |
411 | int64_t stream_id; | |
412 | ||
413 | if (!trace || !stream_class) { | |
414 | ret = -1; | |
415 | goto end; | |
416 | } | |
417 | ||
418 | for (i = 0; i < trace->stream_classes->len; i++) { | |
419 | if (trace->stream_classes->pdata[i] == stream_class) { | |
420 | ret = -1; | |
421 | goto end; | |
422 | } | |
423 | } | |
424 | ||
425 | stream_id = bt_ctf_stream_class_get_id(stream_class); | |
426 | if (stream_id < 0) { | |
427 | stream_id = trace->next_stream_id++; | |
428 | ||
429 | /* Try to assign a new stream id */ | |
430 | for (i = 0; i < trace->stream_classes->len; i++) { | |
431 | if (stream_id == bt_ctf_stream_class_get_id( | |
432 | trace->stream_classes->pdata[i])) { | |
433 | /* Duplicate stream id found */ | |
434 | ret = -1; | |
435 | goto end; | |
436 | } | |
437 | } | |
438 | ||
439 | if (_bt_ctf_stream_class_set_id(stream_class, | |
de866173 | 440 | stream_id)) { |
ef0c4a15 JG |
441 | /* TODO Should retry with a different stream id */ |
442 | ret = -1; | |
443 | goto end; | |
444 | } | |
445 | } | |
446 | ||
447 | bt_ctf_stream_class_get(stream_class); | |
448 | g_ptr_array_add(trace->stream_classes, stream_class); | |
449 | ||
450 | /* | |
451 | * Freeze the trace and its packet header. | |
452 | * | |
453 | * All field type byte orders set as "native" byte ordering can now be | |
454 | * safely set to trace's own endianness, including the stream class'. | |
455 | */ | |
456 | bt_ctf_field_type_set_native_byte_order(trace->packet_header_type, | |
457 | trace->byte_order); | |
458 | ret = bt_ctf_stream_class_set_byte_order(stream_class, | |
459 | trace->byte_order == LITTLE_ENDIAN ? | |
460 | BT_CTF_BYTE_ORDER_LITTLE_ENDIAN : BT_CTF_BYTE_ORDER_BIG_ENDIAN); | |
461 | if (ret) { | |
462 | goto end; | |
463 | } | |
464 | bt_ctf_stream_class_freeze(stream_class); | |
465 | trace->frozen = 1; | |
466 | ||
467 | end: | |
468 | return ret; | |
469 | } | |
470 | ||
471 | int bt_ctf_trace_get_stream_class_count(struct bt_ctf_trace *trace) | |
472 | { | |
473 | int ret; | |
474 | ||
475 | if (!trace) { | |
476 | ret = -1; | |
477 | goto end; | |
478 | } | |
479 | ||
480 | ret = trace->stream_classes->len; | |
481 | end: | |
482 | return ret; | |
483 | } | |
484 | ||
485 | struct bt_ctf_stream_class *bt_ctf_trace_get_stream_class( | |
486 | struct bt_ctf_trace *trace, int index) | |
487 | { | |
488 | struct bt_ctf_stream_class *stream_class = NULL; | |
489 | ||
490 | if (!trace || index < 0 || index >= trace->stream_classes->len) { | |
491 | goto end; | |
492 | } | |
493 | ||
494 | stream_class = g_ptr_array_index(trace->stream_classes, index); | |
495 | bt_ctf_stream_class_get(stream_class); | |
496 | end: | |
497 | return stream_class; | |
498 | } | |
499 | ||
bc37ae52 JG |
500 | BT_HIDDEN |
501 | const char *get_byte_order_string(int byte_order) | |
502 | { | |
503 | const char *string; | |
504 | ||
505 | switch (byte_order) { | |
506 | case LITTLE_ENDIAN: | |
507 | string = "le"; | |
508 | break; | |
509 | case BIG_ENDIAN: | |
510 | string = "be"; | |
511 | break; | |
512 | default: | |
513 | string = "unknown"; | |
514 | break; | |
515 | } | |
516 | ||
517 | return string; | |
518 | } | |
519 | ||
520 | static | |
521 | int append_trace_metadata(struct bt_ctf_trace *trace, | |
522 | struct metadata_context *context) | |
523 | { | |
524 | unsigned char *uuid = trace->uuid; | |
525 | int ret; | |
526 | ||
527 | g_string_append(context->string, "trace {\n"); | |
528 | ||
529 | g_string_append(context->string, "\tmajor = 1;\n"); | |
530 | g_string_append(context->string, "\tminor = 8;\n"); | |
531 | ||
532 | g_string_append_printf(context->string, | |
533 | "\tuuid = \"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\";\n", | |
534 | uuid[0], uuid[1], uuid[2], uuid[3], | |
535 | uuid[4], uuid[5], uuid[6], uuid[7], | |
536 | uuid[8], uuid[9], uuid[10], uuid[11], | |
537 | uuid[12], uuid[13], uuid[14], uuid[15]); | |
538 | g_string_append_printf(context->string, "\tbyte_order = %s;\n", | |
539 | get_byte_order_string(trace->byte_order)); | |
540 | ||
541 | g_string_append(context->string, "\tpacket.header := "); | |
542 | context->current_indentation_level++; | |
543 | g_string_assign(context->field_name, ""); | |
d246b111 | 544 | ret = bt_ctf_field_type_serialize(trace->packet_header_type, |
bc37ae52 JG |
545 | context); |
546 | if (ret) { | |
547 | goto end; | |
548 | } | |
549 | context->current_indentation_level--; | |
550 | ||
551 | g_string_append(context->string, ";\n};\n\n"); | |
552 | end: | |
553 | return ret; | |
554 | } | |
555 | ||
556 | static | |
557 | void append_env_field_metadata(struct environment_variable *var, | |
558 | struct metadata_context *context) | |
559 | { | |
3487c9f3 JG |
560 | switch (var->type) { |
561 | case BT_ENVIRONMENT_FIELD_TYPE_STRING: | |
562 | g_string_append_printf(context->string, "\t%s = \"%s\";\n", | |
563 | var->name->str, var->value.string->str); | |
564 | break; | |
565 | case BT_ENVIRONMENT_FIELD_TYPE_INTEGER: | |
566 | g_string_append_printf(context->string, "\t%s = %" PRId64 ";\n", | |
567 | var->name->str, var->value.integer); | |
568 | break; | |
569 | default: | |
570 | assert(0); | |
571 | } | |
bc37ae52 JG |
572 | } |
573 | ||
574 | static | |
575 | void append_env_metadata(struct bt_ctf_trace *trace, | |
576 | struct metadata_context *context) | |
577 | { | |
578 | if (trace->environment->len == 0) { | |
579 | return; | |
580 | } | |
581 | ||
582 | g_string_append(context->string, "env {\n"); | |
583 | g_ptr_array_foreach(trace->environment, | |
584 | (GFunc)append_env_field_metadata, context); | |
585 | g_string_append(context->string, "};\n\n"); | |
586 | } | |
587 | ||
588 | char *bt_ctf_trace_get_metadata_string(struct bt_ctf_trace *trace) | |
589 | { | |
590 | char *metadata = NULL; | |
591 | struct metadata_context *context = NULL; | |
592 | int err = 0; | |
593 | size_t i; | |
594 | ||
595 | if (!trace) { | |
596 | goto end; | |
597 | } | |
598 | ||
599 | context = g_new0(struct metadata_context, 1); | |
600 | if (!context) { | |
601 | goto end; | |
602 | } | |
603 | ||
604 | context->field_name = g_string_sized_new(DEFAULT_IDENTIFIER_SIZE); | |
605 | context->string = g_string_sized_new(DEFAULT_METADATA_STRING_SIZE); | |
606 | g_string_append(context->string, "/* CTF 1.8 */\n\n"); | |
607 | if (append_trace_metadata(trace, context)) { | |
608 | goto error; | |
609 | } | |
610 | append_env_metadata(trace, context); | |
611 | g_ptr_array_foreach(trace->clocks, | |
612 | (GFunc)bt_ctf_clock_serialize, context); | |
613 | ||
614 | for (i = 0; i < trace->stream_classes->len; i++) { | |
615 | err = bt_ctf_stream_class_serialize( | |
616 | trace->stream_classes->pdata[i], context); | |
617 | if (err) { | |
618 | goto error; | |
619 | } | |
620 | } | |
621 | ||
622 | metadata = context->string->str; | |
623 | error: | |
624 | g_string_free(context->string, err ? TRUE : FALSE); | |
625 | g_string_free(context->field_name, TRUE); | |
626 | g_free(context); | |
627 | end: | |
628 | return metadata; | |
629 | } | |
630 | ||
4ed90fb3 JG |
631 | enum bt_ctf_byte_order bt_ctf_trace_get_byte_order(struct bt_ctf_trace *trace) |
632 | { | |
633 | enum bt_ctf_byte_order ret = BT_CTF_BYTE_ORDER_UNKNOWN; | |
634 | ||
635 | if (!trace) { | |
636 | goto end; | |
637 | } | |
638 | ||
639 | switch (trace->byte_order) { | |
640 | case BIG_ENDIAN: | |
641 | ret = BT_CTF_BYTE_ORDER_BIG_ENDIAN; | |
642 | break; | |
643 | case LITTLE_ENDIAN: | |
644 | ret = BT_CTF_BYTE_ORDER_LITTLE_ENDIAN; | |
645 | break; | |
646 | default: | |
647 | break; | |
648 | } | |
649 | end: | |
650 | return ret; | |
651 | } | |
652 | ||
bc37ae52 JG |
653 | int bt_ctf_trace_set_byte_order(struct bt_ctf_trace *trace, |
654 | enum bt_ctf_byte_order byte_order) | |
655 | { | |
656 | int ret = 0; | |
657 | int internal_byte_order; | |
658 | ||
659 | if (!trace || trace->frozen) { | |
660 | ret = -1; | |
661 | goto end; | |
662 | } | |
663 | ||
664 | switch (byte_order) { | |
665 | case BT_CTF_BYTE_ORDER_NATIVE: | |
c35a1669 JG |
666 | /* |
667 | * This doesn't make sense since the CTF specification defines | |
668 | * the "native" byte order as "the byte order described in the | |
669 | * trace description". However, this behavior had been | |
670 | * implemented as part of v1.2 and is kept to maintain | |
671 | * compatibility. | |
672 | * | |
673 | * This may be changed on a major version bump only. | |
674 | */ | |
675 | internal_byte_order = (G_BYTE_ORDER == G_LITTLE_ENDIAN) ? | |
bc37ae52 JG |
676 | LITTLE_ENDIAN : BIG_ENDIAN; |
677 | break; | |
678 | case BT_CTF_BYTE_ORDER_LITTLE_ENDIAN: | |
679 | internal_byte_order = LITTLE_ENDIAN; | |
680 | break; | |
681 | case BT_CTF_BYTE_ORDER_BIG_ENDIAN: | |
682 | case BT_CTF_BYTE_ORDER_NETWORK: | |
683 | internal_byte_order = BIG_ENDIAN; | |
684 | break; | |
685 | default: | |
686 | ret = -1; | |
687 | goto end; | |
688 | } | |
689 | ||
690 | trace->byte_order = internal_byte_order; | |
bc37ae52 JG |
691 | end: |
692 | return ret; | |
693 | } | |
694 | ||
d246b111 JG |
695 | struct bt_ctf_field_type *bt_ctf_trace_get_packet_header_type( |
696 | struct bt_ctf_trace *trace) | |
697 | { | |
698 | struct bt_ctf_field_type *field_type = NULL; | |
699 | ||
700 | if (!trace) { | |
701 | goto end; | |
702 | } | |
703 | ||
704 | bt_ctf_field_type_get(trace->packet_header_type); | |
705 | field_type = trace->packet_header_type; | |
706 | end: | |
707 | return field_type; | |
708 | } | |
709 | ||
710 | int bt_ctf_trace_set_packet_header_type(struct bt_ctf_trace *trace, | |
711 | struct bt_ctf_field_type *packet_header_type) | |
712 | { | |
713 | int ret = 0; | |
714 | ||
715 | if (!trace || !packet_header_type || trace->frozen) { | |
716 | ret = -1; | |
717 | goto end; | |
718 | } | |
719 | ||
720 | /* packet_header_type must be a structure */ | |
721 | if (bt_ctf_field_type_get_type_id(packet_header_type) != | |
722 | CTF_TYPE_STRUCT) { | |
723 | ret = -1; | |
724 | goto end; | |
725 | } | |
726 | ||
727 | bt_ctf_field_type_get(packet_header_type); | |
728 | bt_ctf_field_type_put(trace->packet_header_type); | |
729 | trace->packet_header_type = packet_header_type; | |
730 | end: | |
731 | return ret; | |
732 | } | |
733 | ||
bc37ae52 JG |
734 | void bt_ctf_trace_get(struct bt_ctf_trace *trace) |
735 | { | |
736 | if (!trace) { | |
737 | return; | |
738 | } | |
739 | ||
740 | bt_ctf_ref_get(&trace->ref_count); | |
741 | } | |
742 | ||
743 | void bt_ctf_trace_put(struct bt_ctf_trace *trace) | |
744 | { | |
745 | if (!trace) { | |
746 | return; | |
747 | } | |
748 | ||
749 | bt_ctf_ref_put(&trace->ref_count, bt_ctf_trace_destroy); | |
750 | } | |
751 | ||
bc37ae52 JG |
752 | BT_HIDDEN |
753 | struct bt_ctf_field_type *get_field_type(enum field_type_alias alias) | |
754 | { | |
755 | unsigned int alignment, size; | |
756 | struct bt_ctf_field_type *field_type; | |
757 | ||
758 | if (alias >= NR_FIELD_TYPE_ALIAS) { | |
759 | return NULL; | |
760 | } | |
761 | ||
762 | alignment = field_type_aliases_alignments[alias]; | |
763 | size = field_type_aliases_sizes[alias]; | |
764 | field_type = bt_ctf_field_type_integer_create(size); | |
765 | bt_ctf_field_type_set_alignment(field_type, alignment); | |
766 | return field_type; | |
767 | } | |
768 | ||
769 | static | |
770 | int init_trace_packet_header(struct bt_ctf_trace *trace) | |
771 | { | |
bc37ae52 | 772 | int ret = 0; |
d246b111 | 773 | struct bt_ctf_field *magic = NULL, *uuid_array = NULL; |
bc37ae52 JG |
774 | struct bt_ctf_field_type *_uint32_t = |
775 | get_field_type(FIELD_TYPE_ALIAS_UINT32_T); | |
776 | struct bt_ctf_field_type *_uint8_t = | |
777 | get_field_type(FIELD_TYPE_ALIAS_UINT8_T); | |
778 | struct bt_ctf_field_type *trace_packet_header_type = | |
779 | bt_ctf_field_type_structure_create(); | |
780 | struct bt_ctf_field_type *uuid_array_type = | |
781 | bt_ctf_field_type_array_create(_uint8_t, 16); | |
782 | ||
783 | if (!trace_packet_header_type || !uuid_array_type) { | |
784 | ret = -1; | |
785 | goto end; | |
786 | } | |
787 | ||
bc37ae52 JG |
788 | ret = bt_ctf_field_type_structure_add_field(trace_packet_header_type, |
789 | _uint32_t, "magic"); | |
790 | if (ret) { | |
791 | goto end; | |
792 | } | |
793 | ||
794 | ret = bt_ctf_field_type_structure_add_field(trace_packet_header_type, | |
795 | uuid_array_type, "uuid"); | |
796 | if (ret) { | |
797 | goto end; | |
798 | } | |
799 | ||
800 | ret = bt_ctf_field_type_structure_add_field(trace_packet_header_type, | |
801 | _uint32_t, "stream_id"); | |
802 | if (ret) { | |
803 | goto end; | |
804 | } | |
805 | ||
662e778c JG |
806 | ret = bt_ctf_trace_set_packet_header_type(trace, |
807 | trace_packet_header_type); | |
808 | if (ret) { | |
809 | goto end; | |
810 | } | |
bc37ae52 JG |
811 | end: |
812 | bt_ctf_field_type_put(uuid_array_type); | |
813 | bt_ctf_field_type_put(_uint32_t); | |
814 | bt_ctf_field_type_put(_uint8_t); | |
815 | bt_ctf_field_put(magic); | |
816 | bt_ctf_field_put(uuid_array); | |
662e778c | 817 | bt_ctf_field_type_put(trace_packet_header_type); |
bc37ae52 JG |
818 | |
819 | return ret; | |
820 | } | |
821 | ||
822 | static | |
823 | void environment_variable_destroy(struct environment_variable *var) | |
824 | { | |
825 | g_string_free(var->name, TRUE); | |
3487c9f3 JG |
826 | if (var->type == BT_ENVIRONMENT_FIELD_TYPE_STRING) { |
827 | g_string_free(var->value.string, TRUE); | |
828 | } | |
bc37ae52 JG |
829 | g_free(var); |
830 | } |