Commit | Line | Data |
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7a278c8e | 1 | /* |
ea0b4b9e | 2 | * fs.c |
7a278c8e | 3 | * |
ea0b4b9e | 4 | * Babeltrace CTF file system Reader Component |
7a278c8e | 5 | * |
f3bc2010 | 6 | * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
7a278c8e JG |
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 | ||
ea0b4b9e | 29 | #include <babeltrace/plugin/plugin-system.h> |
5b29e799 | 30 | #include <babeltrace/ctf-ir/packet.h> |
a4792757 | 31 | #include <babeltrace/ctf-ir/clock.h> |
760051fa | 32 | #include <babeltrace/plugin/notification/iterator.h> |
5b29e799 JG |
33 | #include <babeltrace/plugin/notification/stream.h> |
34 | #include <babeltrace/plugin/notification/event.h> | |
35 | #include <babeltrace/plugin/notification/packet.h> | |
36 | #include <babeltrace/plugin/notification/heap.h> | |
ea0b4b9e JG |
37 | #include <glib.h> |
38 | #include <assert.h> | |
56a1cced JG |
39 | #include <unistd.h> |
40 | #include "fs.h" | |
413bc2c4 JG |
41 | #include "metadata.h" |
42 | #include "data-stream.h" | |
e7a4393b JG |
43 | #include "file.h" |
44 | ||
45 | #define PRINT_ERR_STREAM ctf_fs->error_fp | |
46 | #define PRINT_PREFIX "ctf-fs" | |
47 | #include "print.h" | |
ea0b4b9e | 48 | |
78bb6992 MD |
49 | BT_HIDDEN |
50 | bool ctf_fs_debug; | |
ea0b4b9e | 51 | |
f48bc732 JG |
52 | static |
53 | enum bt_notification_iterator_status ctf_fs_iterator_next( | |
54 | struct bt_notification_iterator *iterator); | |
55 | ||
ea0b4b9e | 56 | static |
760051fa JG |
57 | struct bt_notification *ctf_fs_iterator_get( |
58 | struct bt_notification_iterator *iterator) | |
ea0b4b9e | 59 | { |
5b29e799 JG |
60 | struct ctf_fs_iterator *ctf_it = |
61 | bt_notification_iterator_get_private_data(iterator); | |
d01e0f33 | 62 | |
f48bc732 JG |
63 | if (!ctf_it->current_notification) { |
64 | (void) ctf_fs_iterator_next(iterator); | |
65 | } | |
66 | ||
5b29e799 | 67 | return bt_get(ctf_it->current_notification); |
ea0b4b9e JG |
68 | } |
69 | ||
70 | static | |
5b29e799 JG |
71 | enum bt_notification_iterator_status ctf_fs_iterator_get_next_notification( |
72 | struct ctf_fs_iterator *it, | |
73 | struct ctf_fs_stream *stream, | |
74 | struct bt_notification **notification) | |
ea0b4b9e | 75 | { |
5b29e799 | 76 | enum bt_ctf_notif_iter_status status; |
d01e0f33 | 77 | enum bt_notification_iterator_status ret; |
d01e0f33 | 78 | |
5b29e799 JG |
79 | if (stream->end_reached) { |
80 | status = BT_CTF_NOTIF_ITER_STATUS_EOF; | |
d01e0f33 JG |
81 | goto end; |
82 | } | |
83 | ||
5b29e799 JG |
84 | status = bt_ctf_notif_iter_get_next_notification(stream->notif_iter, |
85 | notification); | |
86 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK && | |
87 | status != BT_CTF_NOTIF_ITER_STATUS_EOF) { | |
d01e0f33 JG |
88 | goto end; |
89 | } | |
90 | ||
5b29e799 JG |
91 | /* Should be handled in bt_ctf_notif_iter_get_next_notification. */ |
92 | if (status == BT_CTF_NOTIF_ITER_STATUS_EOF) { | |
93 | *notification = bt_notification_stream_end_create( | |
94 | stream->stream); | |
95 | if (!*notification) { | |
96 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
97 | } | |
98 | status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
99 | stream->end_reached = true; | |
100 | } | |
d01e0f33 | 101 | end: |
5b29e799 JG |
102 | switch (status) { |
103 | case BT_CTF_NOTIF_ITER_STATUS_EOF: | |
104 | ret = BT_NOTIFICATION_ITERATOR_STATUS_END; | |
105 | break; | |
106 | case BT_CTF_NOTIF_ITER_STATUS_OK: | |
107 | ret = BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
108 | break; | |
109 | case BT_CTF_NOTIF_ITER_STATUS_AGAIN: | |
110 | /* | |
111 | * Should not make it this far as this is medium-specific; | |
112 | * there is nothing for the user to do and it should have been | |
113 | * handled upstream. | |
114 | */ | |
115 | assert(0); | |
116 | case BT_CTF_NOTIF_ITER_STATUS_INVAL: | |
117 | /* No argument provided by the user, so don't return INVAL. */ | |
118 | case BT_CTF_NOTIF_ITER_STATUS_ERROR: | |
119 | default: | |
120 | ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
121 | break; | |
122 | } | |
043e2020 | 123 | return ret; |
ea0b4b9e | 124 | } |
bfd20a42 | 125 | |
5b29e799 JG |
126 | /* |
127 | * Remove me. This is a temporary work-around due to our inhability to use | |
128 | * libbabeltrace-ctf from libbabeltrace-plugin. | |
129 | */ | |
760051fa | 130 | static |
5b29e799 JG |
131 | struct bt_ctf_stream *internal_bt_notification_get_stream( |
132 | struct bt_notification *notification) | |
760051fa | 133 | { |
5b29e799 JG |
134 | struct bt_ctf_stream *stream = NULL; |
135 | ||
136 | assert(notification); | |
137 | switch (bt_notification_get_type(notification)) { | |
138 | case BT_NOTIFICATION_TYPE_EVENT: | |
139 | { | |
140 | struct bt_ctf_event *event; | |
141 | ||
142 | event = bt_notification_event_get_event(notification); | |
143 | stream = bt_ctf_event_get_stream(event); | |
144 | bt_put(event); | |
145 | break; | |
146 | } | |
ea0e619e | 147 | case BT_NOTIFICATION_TYPE_PACKET_BEGIN: |
5b29e799 JG |
148 | { |
149 | struct bt_ctf_packet *packet; | |
150 | ||
ea0e619e | 151 | packet = bt_notification_packet_begin_get_packet(notification); |
5b29e799 JG |
152 | stream = bt_ctf_packet_get_stream(packet); |
153 | bt_put(packet); | |
154 | break; | |
155 | } | |
156 | case BT_NOTIFICATION_TYPE_PACKET_END: | |
157 | { | |
158 | struct bt_ctf_packet *packet; | |
159 | ||
160 | packet = bt_notification_packet_end_get_packet(notification); | |
161 | stream = bt_ctf_packet_get_stream(packet); | |
162 | bt_put(packet); | |
163 | break; | |
164 | } | |
165 | case BT_NOTIFICATION_TYPE_STREAM_END: | |
166 | stream = bt_notification_stream_end_get_stream(notification); | |
167 | break; | |
168 | default: | |
169 | goto end; | |
170 | } | |
171 | end: | |
172 | return stream; | |
760051fa JG |
173 | } |
174 | ||
175 | static | |
5b29e799 | 176 | enum bt_notification_iterator_status populate_heap(struct ctf_fs_iterator *it) |
760051fa | 177 | { |
5b29e799 JG |
178 | size_t i, pending_streams_count = it->pending_streams->len; |
179 | enum bt_notification_iterator_status ret = | |
180 | BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
181 | ||
182 | /* Insert one stream-associated notification for each stream. */ | |
183 | for (i = 0; i < pending_streams_count; i++) { | |
184 | struct bt_notification *notification; | |
185 | struct ctf_fs_stream *fs_stream; | |
186 | struct bt_ctf_stream *stream; | |
187 | size_t pending_stream_index = pending_streams_count - 1 - i; | |
188 | ||
189 | fs_stream = g_ptr_array_index(it->pending_streams, | |
190 | pending_stream_index); | |
191 | ||
192 | do { | |
193 | int heap_ret; | |
194 | ||
195 | ret = ctf_fs_iterator_get_next_notification( | |
196 | it, fs_stream, ¬ification); | |
197 | if (ret && ret != BT_NOTIFICATION_ITERATOR_STATUS_END) { | |
198 | printf_debug("Failed to populate heap at stream %zu\n", | |
199 | pending_stream_index); | |
200 | goto end; | |
201 | } | |
202 | ||
203 | stream = internal_bt_notification_get_stream( | |
204 | notification); | |
205 | if (stream) { | |
206 | gboolean inserted; | |
207 | ||
208 | /* | |
209 | * Associate pending ctf_fs_stream to | |
210 | * bt_ctf_stream. Ownership of stream | |
211 | * is passed to the stream ht. | |
212 | */ | |
213 | inserted = g_hash_table_insert(it->stream_ht, | |
214 | stream, fs_stream); | |
215 | if (!inserted) { | |
216 | ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM; | |
217 | printf_debug("Failed to associate fs stream to ctf stream\n"); | |
218 | goto end; | |
219 | } | |
220 | } | |
221 | ||
222 | heap_ret = bt_notification_heap_insert( | |
223 | it->pending_notifications, | |
224 | notification); | |
225 | bt_put(notification); | |
226 | if (heap_ret) { | |
227 | ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM; | |
228 | printf_debug("Failed to insert notification in heap\n"); | |
229 | goto end; | |
230 | } | |
231 | } while (!stream && ret != BT_NOTIFICATION_ITERATOR_STATUS_END); | |
232 | /* | |
233 | * Set NULL so the destruction callback registered with the | |
234 | * array is not invoked on the stream (its ownership was | |
235 | * transferred to the streams hashtable). | |
236 | */ | |
237 | g_ptr_array_index(it->pending_streams, | |
238 | pending_stream_index) = NULL; | |
239 | g_ptr_array_remove_index(it->pending_streams, | |
240 | pending_stream_index); | |
241 | } | |
760051fa | 242 | |
5b29e799 JG |
243 | g_ptr_array_free(it->pending_streams, TRUE); |
244 | it->pending_streams = NULL; | |
245 | end: | |
246 | return ret; | |
760051fa JG |
247 | } |
248 | ||
249 | static | |
5b29e799 JG |
250 | enum bt_notification_iterator_status ctf_fs_iterator_next( |
251 | struct bt_notification_iterator *iterator) | |
4c1456f0 | 252 | { |
5b29e799 | 253 | int heap_ret; |
a11bd504 | 254 | struct bt_ctf_stream *stream = NULL; |
5b29e799 JG |
255 | struct ctf_fs_stream *fs_stream; |
256 | struct bt_notification *notification; | |
257 | struct bt_notification *next_stream_notification; | |
258 | enum bt_notification_iterator_status ret = | |
259 | BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
260 | struct ctf_fs_iterator *ctf_it = | |
261 | bt_notification_iterator_get_private_data(iterator); | |
262 | ||
263 | notification = bt_notification_heap_pop(ctf_it->pending_notifications); | |
264 | if (!notification && !ctf_it->pending_streams) { | |
265 | ret = BT_NOTIFICATION_ITERATOR_STATUS_END; | |
760051fa JG |
266 | goto end; |
267 | } | |
268 | ||
5b29e799 JG |
269 | if (!notification && ctf_it->pending_streams) { |
270 | /* | |
271 | * Insert at one notification per stream in the heap and pop | |
272 | * one. | |
273 | */ | |
274 | ret = populate_heap(ctf_it); | |
275 | if (ret) { | |
276 | goto end; | |
277 | } | |
278 | ||
279 | notification = bt_notification_heap_pop( | |
280 | ctf_it->pending_notifications); | |
281 | if (!notification) { | |
282 | ret = BT_NOTIFICATION_ITERATOR_STATUS_END; | |
283 | goto end; | |
284 | } | |
760051fa JG |
285 | } |
286 | ||
5b29e799 JG |
287 | /* notification is set from here. */ |
288 | ||
289 | stream = internal_bt_notification_get_stream(notification); | |
290 | if (!stream) { | |
291 | /* | |
292 | * The current notification is not associated to a particular | |
293 | * stream, there is no need to insert a new notification from | |
294 | * a stream in the heap. | |
295 | */ | |
296 | goto end; | |
760051fa JG |
297 | } |
298 | ||
5b29e799 JG |
299 | fs_stream = g_hash_table_lookup(ctf_it->stream_ht, stream); |
300 | if (!fs_stream) { | |
301 | /* We have reached this stream's end. */ | |
302 | goto end; | |
760051fa JG |
303 | } |
304 | ||
5b29e799 JG |
305 | ret = ctf_fs_iterator_get_next_notification(ctf_it, fs_stream, |
306 | &next_stream_notification); | |
307 | if ((ret && ret != BT_NOTIFICATION_ITERATOR_STATUS_END)) { | |
308 | heap_ret = bt_notification_heap_insert( | |
309 | ctf_it->pending_notifications, notification); | |
310 | ||
311 | assert(!next_stream_notification); | |
312 | if (heap_ret) { | |
313 | /* | |
314 | * We're dropping the most recent notification, but at | |
315 | * this point, something is seriously wrong... | |
316 | */ | |
317 | ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM; | |
318 | } | |
319 | BT_PUT(notification); | |
320 | goto end; | |
321 | } | |
322 | ||
323 | if (ret == BT_NOTIFICATION_ITERATOR_STATUS_END) { | |
324 | gboolean success; | |
325 | ||
326 | /* Remove stream. */ | |
327 | success = g_hash_table_remove(ctf_it->stream_ht, stream); | |
328 | assert(success); | |
329 | ret = BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
330 | } else { | |
331 | heap_ret = bt_notification_heap_insert(ctf_it->pending_notifications, | |
332 | next_stream_notification); | |
333 | BT_PUT(next_stream_notification); | |
334 | if (heap_ret) { | |
335 | /* | |
336 | * We're dropping the most recent notification... | |
337 | */ | |
338 | ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM; | |
339 | } | |
760051fa | 340 | } |
5b29e799 JG |
341 | |
342 | /* | |
343 | * Ensure that the stream is removed from both pending_streams and | |
344 | * the streams hashtable on reception of the "end of stream" | |
345 | * notification. | |
346 | */ | |
760051fa | 347 | end: |
5b29e799 | 348 | BT_MOVE(ctf_it->current_notification, notification); |
33bf10b7 | 349 | bt_put(stream); |
760051fa JG |
350 | return ret; |
351 | } | |
352 | ||
760051fa | 353 | static |
5b29e799 | 354 | void ctf_fs_iterator_destroy_data(struct ctf_fs_iterator *ctf_it) |
760051fa | 355 | { |
5b29e799 JG |
356 | bt_put(ctf_it->current_notification); |
357 | bt_put(ctf_it->pending_notifications); | |
358 | if (ctf_it->pending_streams) { | |
359 | g_ptr_array_free(ctf_it->pending_streams, TRUE); | |
56a1cced | 360 | } |
5b29e799 JG |
361 | if (ctf_it->stream_ht) { |
362 | g_hash_table_destroy(ctf_it->stream_ht); | |
c14d7e26 | 363 | } |
5b29e799 | 364 | g_free(ctf_it); |
760051fa JG |
365 | } |
366 | ||
367 | static | |
5b29e799 | 368 | void ctf_fs_iterator_destroy(struct bt_notification_iterator *it) |
760051fa | 369 | { |
5b29e799 | 370 | void *data = bt_notification_iterator_get_private_data(it); |
760051fa | 371 | |
5b29e799 | 372 | ctf_fs_iterator_destroy_data(data); |
4c1456f0 JG |
373 | } |
374 | ||
a4792757 JG |
375 | static |
376 | bool compare_event_notifications(struct bt_notification *a, | |
377 | struct bt_notification *b) | |
378 | { | |
379 | int ret; | |
380 | struct bt_ctf_clock *clock; | |
381 | struct bt_ctf_clock_value *a_clock_value, *b_clock_value; | |
382 | struct bt_ctf_stream_class *a_stream_class; | |
383 | struct bt_ctf_stream *a_stream; | |
384 | struct bt_ctf_event *a_event, *b_event; | |
385 | struct bt_ctf_trace *trace; | |
386 | int64_t a_ts, b_ts; | |
387 | ||
388 | // FIXME - assumes only one clock | |
389 | a_event = bt_notification_event_get_event(a); | |
390 | b_event = bt_notification_event_get_event(b); | |
391 | assert(a_event); | |
392 | assert(b_event); | |
393 | ||
394 | a_stream = bt_ctf_event_get_stream(a_event); | |
395 | assert(a_stream); | |
396 | a_stream_class = bt_ctf_stream_get_class(a_stream); | |
397 | assert(a_stream_class); | |
398 | trace = bt_ctf_stream_class_get_trace(a_stream_class); | |
399 | assert(trace); | |
400 | ||
401 | clock = bt_ctf_trace_get_clock(trace, 0); | |
402 | a_clock_value = bt_ctf_event_get_clock_value(a_event, clock); | |
403 | b_clock_value = bt_ctf_event_get_clock_value(b_event, clock); | |
404 | assert(a_clock_value); | |
405 | assert(b_clock_value); | |
406 | ||
407 | ret = bt_ctf_clock_value_get_value_ns_from_epoch(a_clock_value, &a_ts); | |
408 | assert(!ret); | |
409 | ret = bt_ctf_clock_value_get_value_ns_from_epoch(b_clock_value, &b_ts); | |
410 | assert(!ret); | |
411 | ||
412 | bt_put(a_event); | |
413 | bt_put(b_event); | |
414 | bt_put(a_clock_value); | |
415 | bt_put(b_clock_value); | |
416 | bt_put(a_stream); | |
417 | bt_put(a_stream_class); | |
418 | bt_put(clock); | |
419 | bt_put(trace); | |
420 | return a_ts < b_ts; | |
421 | } | |
422 | ||
e7a4393b | 423 | static |
5b29e799 JG |
424 | bool compare_notifications(struct bt_notification *a, struct bt_notification *b, |
425 | void *unused) | |
426 | { | |
a4792757 JG |
427 | static int notification_priorities[] = { |
428 | [BT_NOTIFICATION_TYPE_NEW_TRACE] = 0, | |
429 | [BT_NOTIFICATION_TYPE_NEW_STREAM_CLASS] = 1, | |
430 | [BT_NOTIFICATION_TYPE_NEW_EVENT_CLASS] = 2, | |
ea0e619e | 431 | [BT_NOTIFICATION_TYPE_PACKET_BEGIN] = 3, |
a4792757 JG |
432 | [BT_NOTIFICATION_TYPE_PACKET_END] = 4, |
433 | [BT_NOTIFICATION_TYPE_EVENT] = 5, | |
434 | [BT_NOTIFICATION_TYPE_END_OF_TRACE] = 6, | |
435 | }; | |
436 | int a_prio, b_prio; | |
437 | enum bt_notification_type a_type, b_type; | |
438 | ||
439 | assert(a && b); | |
440 | a_type = bt_notification_get_type(a); | |
441 | b_type = bt_notification_get_type(b); | |
442 | assert(a_type > BT_NOTIFICATION_TYPE_ALL); | |
443 | assert(a_type < BT_NOTIFICATION_TYPE_NR); | |
444 | assert(b_type > BT_NOTIFICATION_TYPE_ALL); | |
445 | assert(b_type < BT_NOTIFICATION_TYPE_NR); | |
446 | ||
447 | a_prio = notification_priorities[a_type]; | |
448 | b_prio = notification_priorities[b_type]; | |
449 | ||
450 | if (likely((a_type == b_type) && a_type == BT_NOTIFICATION_TYPE_EVENT)) { | |
451 | return compare_event_notifications(a, b); | |
452 | } | |
453 | ||
454 | if (unlikely(a_prio != b_prio)) { | |
455 | return a_prio < b_prio; | |
456 | } | |
457 | ||
458 | /* Notification types are equal, but not of type "event". */ | |
459 | switch (a_type) { | |
ea0e619e | 460 | case BT_NOTIFICATION_TYPE_PACKET_BEGIN: |
a4792757 JG |
461 | case BT_NOTIFICATION_TYPE_PACKET_END: |
462 | case BT_NOTIFICATION_TYPE_STREAM_END: | |
463 | { | |
464 | int64_t a_sc_id, b_sc_id; | |
465 | struct bt_ctf_stream *a_stream, *b_stream; | |
466 | struct bt_ctf_stream_class *a_sc, *b_sc; | |
467 | ||
468 | a_stream = internal_bt_notification_get_stream(a); | |
469 | b_stream = internal_bt_notification_get_stream(b); | |
470 | assert(a_stream && b_stream); | |
471 | ||
472 | a_sc = bt_ctf_stream_get_class(a_stream); | |
473 | b_sc = bt_ctf_stream_get_class(b_stream); | |
474 | assert(a_sc && b_sc); | |
475 | ||
476 | a_sc_id = bt_ctf_stream_class_get_id(a_sc); | |
477 | b_sc_id = bt_ctf_stream_class_get_id(b_sc); | |
478 | assert(a_sc_id >= 0 && b_sc_id >= 0); | |
479 | bt_put(a_sc); | |
480 | bt_put(a_stream); | |
481 | bt_put(b_sc); | |
482 | bt_put(b_stream); | |
483 | return a_sc_id < b_sc_id; | |
484 | } | |
485 | case BT_NOTIFICATION_TYPE_NEW_TRACE: | |
486 | case BT_NOTIFICATION_TYPE_END_OF_TRACE: | |
487 | /* Impossible to have two separate traces. */ | |
488 | default: | |
489 | assert(0); | |
490 | } | |
491 | ||
492 | assert(0); | |
5b29e799 JG |
493 | return a < b; |
494 | } | |
495 | ||
496 | static | |
497 | void stream_destroy(void *stream) | |
498 | { | |
499 | ctf_fs_stream_destroy((struct ctf_fs_stream *) stream); | |
500 | } | |
501 | ||
502 | static | |
503 | int open_trace_streams(struct ctf_fs_component *ctf_fs, | |
504 | struct ctf_fs_iterator *ctf_it) | |
e7a4393b JG |
505 | { |
506 | int ret = 0; | |
507 | const char *name; | |
508 | GError *error = NULL; | |
509 | GDir *dir = g_dir_open(ctf_fs->trace_path->str, 0, &error); | |
510 | ||
511 | if (!dir) { | |
512 | PERR("Cannot open directory \"%s\": %s (code %d)\n", | |
513 | ctf_fs->trace_path->str, error->message, | |
514 | error->code); | |
515 | goto error; | |
516 | } | |
517 | ||
518 | while ((name = g_dir_read_name(dir))) { | |
519 | struct ctf_fs_file *file = NULL; | |
520 | struct ctf_fs_stream *stream = NULL; | |
521 | ||
522 | if (!strcmp(name, CTF_FS_METADATA_FILENAME)) { | |
523 | /* Ignore the metadata stream. */ | |
524 | PDBG("Ignoring metadata file \"%s\"\n", | |
525 | name); | |
526 | continue; | |
527 | } | |
528 | ||
529 | if (name[0] == '.') { | |
530 | PDBG("Ignoring hidden file \"%s\"\n", | |
531 | name); | |
532 | continue; | |
533 | } | |
534 | ||
535 | /* Create the file. */ | |
536 | file = ctf_fs_file_create(ctf_fs); | |
537 | if (!file) { | |
538 | PERR("Cannot create stream file object\n"); | |
539 | goto error; | |
540 | } | |
541 | ||
542 | /* Create full path string. */ | |
543 | g_string_append_printf(file->path, "%s/%s", | |
544 | ctf_fs->trace_path->str, name); | |
545 | if (!g_file_test(file->path->str, G_FILE_TEST_IS_REGULAR)) { | |
546 | PDBG("Ignoring non-regular file \"%s\"\n", name); | |
547 | ctf_fs_file_destroy(file); | |
548 | continue; | |
549 | } | |
550 | ||
551 | /* Open the file. */ | |
552 | if (ctf_fs_file_open(ctf_fs, file, "rb")) { | |
553 | ctf_fs_file_destroy(file); | |
554 | goto error; | |
555 | } | |
556 | ||
9fa0891a JG |
557 | if (file->size == 0) { |
558 | /* Skip empty stream. */ | |
559 | ctf_fs_file_destroy(file); | |
560 | continue; | |
561 | } | |
562 | ||
e7a4393b JG |
563 | /* Create a private stream; file ownership is passed to it. */ |
564 | stream = ctf_fs_stream_create(ctf_fs, file); | |
565 | if (!stream) { | |
566 | ctf_fs_file_destroy(file); | |
567 | goto error; | |
568 | } | |
569 | ||
5b29e799 | 570 | g_ptr_array_add(ctf_it->pending_streams, stream); |
e7a4393b JG |
571 | } |
572 | ||
573 | goto end; | |
574 | error: | |
575 | ret = -1; | |
576 | end: | |
577 | if (dir) { | |
578 | g_dir_close(dir); | |
579 | dir = NULL; | |
580 | } | |
581 | if (error) { | |
582 | g_error_free(error); | |
583 | } | |
584 | return ret; | |
585 | } | |
586 | ||
587 | static | |
5b29e799 JG |
588 | enum bt_component_status ctf_fs_iterator_init(struct bt_component *source, |
589 | struct bt_notification_iterator *it) | |
e7a4393b | 590 | { |
5b29e799 JG |
591 | struct ctf_fs_iterator *ctf_it; |
592 | struct ctf_fs_component *ctf_fs; | |
593 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; | |
594 | ||
595 | assert(source && it); | |
596 | ||
597 | ctf_fs = bt_component_get_private_data(source); | |
598 | if (!ctf_fs) { | |
599 | ret = BT_COMPONENT_STATUS_INVALID; | |
600 | goto end; | |
601 | } | |
602 | ||
603 | ctf_it = g_new0(struct ctf_fs_iterator, 1); | |
604 | if (!ctf_it) { | |
605 | ret = BT_COMPONENT_STATUS_NOMEM; | |
606 | goto end; | |
607 | } | |
608 | ||
609 | ctf_it->stream_ht = g_hash_table_new_full(g_direct_hash, | |
610 | g_direct_equal, bt_put, stream_destroy); | |
611 | if (!ctf_it->stream_ht) { | |
612 | goto error; | |
613 | } | |
614 | ctf_it->pending_streams = g_ptr_array_new_with_free_func( | |
615 | stream_destroy); | |
616 | if (!ctf_it->pending_streams) { | |
617 | goto error; | |
618 | } | |
619 | ctf_it->pending_notifications = bt_notification_heap_create( | |
620 | compare_notifications, NULL); | |
621 | if (!ctf_it->pending_notifications) { | |
622 | goto error; | |
623 | } | |
624 | ||
625 | ret = open_trace_streams(ctf_fs, ctf_it); | |
626 | if (ret) { | |
627 | goto error; | |
628 | } | |
629 | ||
630 | ret = bt_notification_iterator_set_get_cb(it, ctf_fs_iterator_get); | |
631 | if (ret) { | |
632 | goto error; | |
633 | } | |
634 | ||
635 | ret = bt_notification_iterator_set_next_cb(it, ctf_fs_iterator_next); | |
636 | if (ret) { | |
637 | goto error; | |
638 | } | |
639 | ||
640 | ret = bt_notification_iterator_set_destroy_cb(it, | |
641 | ctf_fs_iterator_destroy); | |
642 | if (ret) { | |
643 | goto error; | |
644 | } | |
645 | ||
646 | ret = bt_notification_iterator_set_private_data(it, ctf_it); | |
647 | if (ret) { | |
648 | goto error; | |
649 | } | |
f48bc732 | 650 | |
5b29e799 JG |
651 | end: |
652 | return ret; | |
653 | error: | |
654 | (void) bt_notification_iterator_set_private_data(it, NULL); | |
655 | ctf_fs_iterator_destroy_data(ctf_it); | |
656 | goto end; | |
657 | } | |
658 | ||
659 | static | |
660 | void ctf_fs_destroy_data(struct ctf_fs_component *ctf_fs) | |
661 | { | |
662 | if (ctf_fs->trace_path) { | |
663 | g_string_free(ctf_fs->trace_path, TRUE); | |
664 | } | |
665 | if (ctf_fs->metadata) { | |
666 | ctf_fs_metadata_fini(ctf_fs->metadata); | |
667 | g_free(ctf_fs->metadata); | |
668 | } | |
669 | g_free(ctf_fs); | |
670 | } | |
671 | ||
672 | static | |
673 | void ctf_fs_destroy(struct bt_component *component) | |
674 | { | |
675 | void *data = bt_component_get_private_data(component); | |
676 | ||
677 | ctf_fs_destroy_data(data); | |
e7a4393b JG |
678 | } |
679 | ||
56a1cced JG |
680 | static |
681 | struct ctf_fs_component *ctf_fs_create(struct bt_value *params) | |
682 | { | |
683 | struct ctf_fs_component *ctf_fs; | |
1ef09eb5 | 684 | struct bt_value *value = NULL; |
56a1cced JG |
685 | const char *path; |
686 | enum bt_value_status ret; | |
687 | ||
688 | ctf_fs = g_new0(struct ctf_fs_component, 1); | |
689 | if (!ctf_fs) { | |
690 | goto end; | |
691 | } | |
692 | ||
693 | /* FIXME: should probably look for a source URI */ | |
694 | value = bt_value_map_get(params, "path"); | |
695 | if (!value || bt_value_is_null(value) || !bt_value_is_string(value)) { | |
696 | goto error; | |
697 | } | |
698 | ||
699 | ret = bt_value_string_get(value, &path); | |
700 | if (ret != BT_VALUE_STATUS_OK) { | |
701 | goto error; | |
702 | } | |
703 | ||
704 | ctf_fs->trace_path = g_string_new(path); | |
705 | if (!ctf_fs->trace_path) { | |
706 | goto error; | |
707 | } | |
56a1cced JG |
708 | ctf_fs->error_fp = stderr; |
709 | ctf_fs->page_size = (size_t) getpagesize(); | |
e7a4393b JG |
710 | |
711 | // FIXME: check error. | |
5b29e799 JG |
712 | ctf_fs->metadata = g_new0(struct ctf_fs_metadata, 1); |
713 | if (!ctf_fs->metadata) { | |
e7a4393b JG |
714 | goto error; |
715 | } | |
5b29e799 | 716 | ctf_fs_metadata_set_trace(ctf_fs); |
1ef09eb5 JG |
717 | goto end; |
718 | ||
56a1cced JG |
719 | error: |
720 | ctf_fs_destroy_data(ctf_fs); | |
e7a4393b | 721 | ctf_fs = NULL; |
1ef09eb5 JG |
722 | end: |
723 | BT_PUT(value); | |
56a1cced JG |
724 | return ctf_fs; |
725 | } | |
726 | ||
ea0b4b9e JG |
727 | BT_HIDDEN |
728 | enum bt_component_status ctf_fs_init(struct bt_component *source, | |
5c80adeb | 729 | struct bt_value *params) |
ea0b4b9e JG |
730 | { |
731 | struct ctf_fs_component *ctf_fs; | |
732 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; | |
733 | ||
734 | assert(source); | |
735 | ctf_fs_debug = g_strcmp0(getenv("CTF_FS_DEBUG"), "1") == 0; | |
736 | ctf_fs = ctf_fs_create(params); | |
737 | if (!ctf_fs) { | |
738 | ret = BT_COMPONENT_STATUS_NOMEM; | |
739 | goto end; | |
740 | } | |
4c1456f0 | 741 | |
ea0b4b9e JG |
742 | ret = bt_component_set_destroy_cb(source, ctf_fs_destroy); |
743 | if (ret != BT_COMPONENT_STATUS_OK) { | |
744 | goto error; | |
745 | } | |
746 | ||
747 | ret = bt_component_set_private_data(source, ctf_fs); | |
748 | if (ret != BT_COMPONENT_STATUS_OK) { | |
749 | goto error; | |
750 | } | |
751 | ||
752 | ret = bt_component_source_set_iterator_init_cb(source, | |
753 | ctf_fs_iterator_init); | |
754 | if (ret != BT_COMPONENT_STATUS_OK) { | |
755 | goto error; | |
756 | } | |
757 | end: | |
758 | return ret; | |
759 | error: | |
760 | (void) bt_component_set_private_data(source, NULL); | |
760051fa | 761 | ctf_fs_destroy_data(ctf_fs); |
ea0b4b9e JG |
762 | return ret; |
763 | } |