Commit | Line | Data |
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e98a2d6e | 1 | /* |
0235b0db | 2 | * SPDX-License-Identifier: MIT |
e98a2d6e | 3 | * |
0235b0db MJ |
4 | * Copyright 2016-2017 Philippe Proulx <pproulx@efficios.com> |
5 | * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
6 | * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation | |
e98a2d6e PP |
7 | */ |
8 | ||
c802cacb SM |
9 | #include <glib.h> |
10 | #include <inttypes.h> | |
11 | #include <stdint.h> | |
12 | #include <stdio.h> | |
c802cacb SM |
13 | #include <string.h> |
14 | ||
15 | #include <babeltrace2/babeltrace.h> | |
16 | ||
2e42d046 | 17 | #define BT_COMP_LOG_SELF_COMP (self_comp) |
4164020e SM |
18 | #define BT_LOG_OUTPUT_LEVEL (log_level) |
19 | #define BT_LOG_TAG "PLUGIN/SRC.CTF.FS/DS" | |
d9c39b0a | 20 | #include "logging/comp-logging.h" |
98903a3e | 21 | |
c802cacb | 22 | #include "common/assert.h" |
83ad336c SM |
23 | #include "compat/endian.h" /* IWYU pragma: keep */ |
24 | #include "compat/mman.h" /* IWYU pragma: keep */ | |
c802cacb | 25 | |
087cd0f5 | 26 | #include "../common/msg-iter/msg-iter.hpp" |
087cd0f5 | 27 | #include "data-stream-file.hpp" |
c802cacb | 28 | #include "file.hpp" |
c7e1be4b SM |
29 | #include "fs.hpp" |
30 | #include "lttng-index.hpp" | |
31 | #include "plugins/ctf/common/metadata/ctf-meta.hpp" | |
e98a2d6e | 32 | |
4164020e | 33 | static inline size_t remaining_mmap_bytes(struct ctf_fs_ds_file *ds_file) |
e98a2d6e | 34 | { |
4164020e SM |
35 | BT_ASSERT_DBG(ds_file->mmap_len >= ds_file->request_offset_in_mapping); |
36 | return ds_file->mmap_len - ds_file->request_offset_in_mapping; | |
e98a2d6e PP |
37 | } |
38 | ||
127e2341 SM |
39 | /* |
40 | * Return true if `offset_in_file` is in the current mapping. | |
41 | */ | |
42 | ||
4164020e | 43 | static bool offset_ist_mapped(struct ctf_fs_ds_file *ds_file, off_t offset_in_file) |
127e2341 | 44 | { |
4164020e SM |
45 | return offset_in_file >= ds_file->mmap_offset_in_file && |
46 | offset_in_file < (ds_file->mmap_offset_in_file + ds_file->mmap_len); | |
127e2341 SM |
47 | } |
48 | ||
4164020e | 49 | static enum ctf_msg_iter_medium_status ds_file_munmap(struct ctf_fs_ds_file *ds_file) |
e98a2d6e | 50 | { |
4164020e SM |
51 | enum ctf_msg_iter_medium_status status; |
52 | bt_self_component *self_comp = ds_file->self_comp; | |
53 | bt_logging_level log_level = ds_file->log_level; | |
54 | ||
55 | BT_ASSERT(ds_file); | |
56 | ||
57 | if (!ds_file->mmap_addr) { | |
58 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
59 | goto end; | |
60 | } | |
61 | ||
62 | if (bt_munmap(ds_file->mmap_addr, ds_file->mmap_len)) { | |
63 | BT_COMP_LOGE_ERRNO("Cannot memory-unmap file", | |
64 | ": address=%p, size=%zu, file_path=\"%s\", file=%p", ds_file->mmap_addr, | |
65 | ds_file->mmap_len, ds_file->file ? ds_file->file->path->str : "NULL", | |
66 | ds_file->file ? ds_file->file->fp : NULL); | |
67 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; | |
68 | goto end; | |
69 | } | |
70 | ||
71 | ds_file->mmap_addr = NULL; | |
72 | ||
73 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
fc9a526c | 74 | end: |
4164020e | 75 | return status; |
e98a2d6e PP |
76 | } |
77 | ||
127e2341 SM |
78 | /* |
79 | * mmap a region of `ds_file` such that `requested_offset_in_file` is in the | |
80 | * mapping. If the currently mmap-ed region already contains | |
81 | * `requested_offset_in_file`, the mapping is kept. | |
82 | * | |
f6e68e70 SM |
83 | * Set `ds_file->requested_offset_in_mapping` based on `request_offset_in_file`, |
84 | * such that the next call to `request_bytes` will return bytes starting at that | |
85 | * position. | |
127e2341 SM |
86 | * |
87 | * `requested_offset_in_file` must be a valid offset in the file. | |
88 | */ | |
4164020e SM |
89 | static enum ctf_msg_iter_medium_status ds_file_mmap(struct ctf_fs_ds_file *ds_file, |
90 | off_t requested_offset_in_file) | |
e98a2d6e | 91 | { |
4164020e SM |
92 | enum ctf_msg_iter_medium_status status; |
93 | bt_self_component *self_comp = ds_file->self_comp; | |
94 | bt_logging_level log_level = ds_file->log_level; | |
95 | ||
96 | /* Ensure the requested offset is in the file range. */ | |
97 | BT_ASSERT(requested_offset_in_file >= 0); | |
98 | BT_ASSERT(requested_offset_in_file < ds_file->file->size); | |
99 | ||
100 | /* | |
101 | * If the mapping already contains the requested offset, just adjust | |
102 | * requested_offset_in_mapping. | |
103 | */ | |
104 | if (offset_ist_mapped(ds_file, requested_offset_in_file)) { | |
105 | ds_file->request_offset_in_mapping = | |
106 | requested_offset_in_file - ds_file->mmap_offset_in_file; | |
107 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
108 | goto end; | |
109 | } | |
110 | ||
111 | /* Unmap old region */ | |
112 | status = ds_file_munmap(ds_file); | |
113 | if (status != CTF_MSG_ITER_MEDIUM_STATUS_OK) { | |
114 | goto end; | |
115 | } | |
116 | ||
117 | /* | |
118 | * Compute a mapping that has the required alignment properties and | |
119 | * contains `requested_offset_in_file`. | |
120 | */ | |
121 | ds_file->request_offset_in_mapping = | |
122 | requested_offset_in_file % bt_mmap_get_offset_align_size(ds_file->log_level); | |
123 | ds_file->mmap_offset_in_file = requested_offset_in_file - ds_file->request_offset_in_mapping; | |
124 | ds_file->mmap_len = | |
125 | MIN(ds_file->file->size - ds_file->mmap_offset_in_file, ds_file->mmap_max_len); | |
126 | ||
127 | BT_ASSERT(ds_file->mmap_len > 0); | |
128 | ||
129 | ds_file->mmap_addr = | |
31cc85a3 | 130 | bt_mmap(ds_file->mmap_len, PROT_READ, MAP_PRIVATE, fileno(ds_file->file->fp), |
4164020e SM |
131 | ds_file->mmap_offset_in_file, ds_file->log_level); |
132 | if (ds_file->mmap_addr == MAP_FAILED) { | |
133 | BT_COMP_LOGE("Cannot memory-map address (size %zu) of file \"%s\" (%p) at offset %jd: %s", | |
134 | ds_file->mmap_len, ds_file->file->path->str, ds_file->file->fp, | |
135 | (intmax_t) ds_file->mmap_offset_in_file, strerror(errno)); | |
136 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; | |
137 | goto end; | |
138 | } | |
139 | ||
140 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
127e2341 SM |
141 | |
142 | end: | |
4164020e | 143 | return status; |
127e2341 SM |
144 | } |
145 | ||
146 | /* | |
147 | * Change the mapping of the file to read the region that follows the current | |
148 | * mapping. | |
149 | * | |
150 | * If the file hasn't been mapped yet, then everything (mmap_offset_in_file, | |
151 | * mmap_len, request_offset_in_mapping) should have the value 0, which will | |
152 | * result in the beginning of the file getting mapped. | |
153 | * | |
154 | * return _EOF if the current mapping is the end of the file. | |
155 | */ | |
156 | ||
4164020e | 157 | static enum ctf_msg_iter_medium_status ds_file_mmap_next(struct ctf_fs_ds_file *ds_file) |
127e2341 | 158 | { |
4164020e SM |
159 | enum ctf_msg_iter_medium_status status; |
160 | ||
161 | /* | |
162 | * If we're called, it's because more bytes are requested but we have | |
163 | * given all the bytes of the current mapping. | |
164 | */ | |
165 | BT_ASSERT(ds_file->request_offset_in_mapping == ds_file->mmap_len); | |
166 | ||
167 | /* | |
168 | * If the current mapping coincides with the end of the file, there is | |
169 | * no next mapping. | |
170 | */ | |
171 | if (ds_file->mmap_offset_in_file + ds_file->mmap_len == ds_file->file->size) { | |
172 | status = CTF_MSG_ITER_MEDIUM_STATUS_EOF; | |
173 | goto end; | |
174 | } | |
175 | ||
176 | status = ds_file_mmap(ds_file, ds_file->mmap_offset_in_file + ds_file->mmap_len); | |
127e2341 | 177 | |
e98a2d6e | 178 | end: |
4164020e | 179 | return status; |
e98a2d6e PP |
180 | } |
181 | ||
4164020e SM |
182 | static enum ctf_msg_iter_medium_status medop_request_bytes(size_t request_sz, uint8_t **buffer_addr, |
183 | size_t *buffer_sz, void *data) | |
e98a2d6e | 184 | { |
4164020e SM |
185 | enum ctf_msg_iter_medium_status status = CTF_MSG_ITER_MEDIUM_STATUS_OK; |
186 | struct ctf_fs_ds_file *ds_file = (struct ctf_fs_ds_file *) data; | |
187 | bt_self_component *self_comp = ds_file->self_comp; | |
188 | bt_logging_level log_level = ds_file->log_level; | |
189 | ||
190 | BT_ASSERT(request_sz > 0); | |
191 | ||
192 | /* | |
193 | * Check if we have at least one memory-mapped byte left. If we don't, | |
194 | * mmap the next file. | |
195 | */ | |
196 | if (remaining_mmap_bytes(ds_file) == 0) { | |
197 | /* Are we at the end of the file? */ | |
198 | if (ds_file->mmap_offset_in_file >= ds_file->file->size) { | |
199 | BT_COMP_LOGD("Reached end of file \"%s\" (%p)", ds_file->file->path->str, | |
200 | ds_file->file->fp); | |
201 | status = CTF_MSG_ITER_MEDIUM_STATUS_EOF; | |
202 | goto end; | |
203 | } | |
204 | ||
205 | status = ds_file_mmap_next(ds_file); | |
206 | switch (status) { | |
207 | case CTF_MSG_ITER_MEDIUM_STATUS_OK: | |
208 | break; | |
209 | case CTF_MSG_ITER_MEDIUM_STATUS_EOF: | |
210 | goto end; | |
211 | default: | |
212 | BT_COMP_LOGE("Cannot memory-map next region of file \"%s\" (%p)", | |
213 | ds_file->file->path->str, ds_file->file->fp); | |
214 | goto error; | |
215 | } | |
216 | } | |
217 | ||
218 | BT_ASSERT(remaining_mmap_bytes(ds_file) > 0); | |
219 | *buffer_sz = MIN(remaining_mmap_bytes(ds_file), request_sz); | |
220 | ||
221 | BT_ASSERT(ds_file->mmap_addr); | |
222 | *buffer_addr = ((uint8_t *) ds_file->mmap_addr) + ds_file->request_offset_in_mapping; | |
223 | ||
224 | ds_file->request_offset_in_mapping += *buffer_sz; | |
225 | goto end; | |
e98a2d6e PP |
226 | |
227 | error: | |
4164020e | 228 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
e98a2d6e PP |
229 | |
230 | end: | |
4164020e | 231 | return status; |
e98a2d6e PP |
232 | } |
233 | ||
ecd7492f | 234 | static bt_stream *medop_borrow_stream(bt_stream_class *stream_class, int64_t, void *data) |
e98a2d6e | 235 | { |
4164020e SM |
236 | struct ctf_fs_ds_file *ds_file = (struct ctf_fs_ds_file *) data; |
237 | bt_stream_class *ds_file_stream_class; | |
238 | bt_stream *stream = NULL; | |
e5be10ef | 239 | |
4164020e | 240 | ds_file_stream_class = bt_stream_borrow_class(ds_file->stream); |
94cf822e | 241 | |
4164020e SM |
242 | if (stream_class != ds_file_stream_class) { |
243 | /* | |
244 | * Not supported: two packets described by two different | |
245 | * stream classes within the same data stream file. | |
246 | */ | |
247 | goto end; | |
248 | } | |
e98a2d6e | 249 | |
4164020e | 250 | stream = ds_file->stream; |
94cf822e PP |
251 | |
252 | end: | |
4164020e | 253 | return stream; |
e98a2d6e PP |
254 | } |
255 | ||
4164020e | 256 | static enum ctf_msg_iter_medium_status medop_seek(off_t offset, void *data) |
9e0c8dbb | 257 | { |
4164020e | 258 | struct ctf_fs_ds_file *ds_file = (struct ctf_fs_ds_file *) data; |
9e0c8dbb | 259 | |
4164020e SM |
260 | BT_ASSERT(offset >= 0); |
261 | BT_ASSERT(offset < ds_file->file->size); | |
9e0c8dbb | 262 | |
4164020e | 263 | return ds_file_mmap(ds_file, offset); |
9e0c8dbb JG |
264 | } |
265 | ||
18a1979b | 266 | struct ctf_msg_iter_medium_ops ctf_fs_ds_file_medops = { |
4164020e SM |
267 | medop_request_bytes, |
268 | medop_seek, | |
269 | nullptr, | |
270 | medop_borrow_stream, | |
e98a2d6e | 271 | }; |
6de92955 | 272 | |
4164020e SM |
273 | struct ctf_fs_ds_group_medops_data |
274 | { | |
275 | /* Weak, set once at creation time. */ | |
276 | struct ctf_fs_ds_file_group *ds_file_group; | |
277 | ||
278 | /* | |
279 | * Index (as in element rank) of the index entry of ds_file_groups' | |
280 | * index we will read next (so, the one after the one we are reading | |
281 | * right now). | |
282 | */ | |
283 | guint next_index_entry_index; | |
284 | ||
285 | /* | |
286 | * File we are currently reading. Changes whenever we switch to | |
287 | * reading another data file. | |
288 | * | |
289 | * Owned by this. | |
290 | */ | |
291 | struct ctf_fs_ds_file *file; | |
292 | ||
293 | /* Weak, for context / logging / appending causes. */ | |
294 | bt_self_message_iterator *self_msg_iter; | |
295 | bt_logging_level log_level; | |
f6e68e70 SM |
296 | }; |
297 | ||
4164020e SM |
298 | static enum ctf_msg_iter_medium_status medop_group_request_bytes(size_t request_sz, |
299 | uint8_t **buffer_addr, | |
300 | size_t *buffer_sz, void *void_data) | |
f6e68e70 | 301 | { |
4164020e | 302 | struct ctf_fs_ds_group_medops_data *data = (struct ctf_fs_ds_group_medops_data *) void_data; |
f6e68e70 | 303 | |
4164020e SM |
304 | /* Return bytes from the current file. */ |
305 | return medop_request_bytes(request_sz, buffer_addr, buffer_sz, data->file); | |
f6e68e70 SM |
306 | } |
307 | ||
4164020e SM |
308 | static bt_stream *medop_group_borrow_stream(bt_stream_class *stream_class, int64_t stream_id, |
309 | void *void_data) | |
f6e68e70 | 310 | { |
4164020e | 311 | struct ctf_fs_ds_group_medops_data *data = (struct ctf_fs_ds_group_medops_data *) void_data; |
f6e68e70 | 312 | |
4164020e | 313 | return medop_borrow_stream(stream_class, stream_id, data->file); |
f6e68e70 SM |
314 | } |
315 | ||
316 | /* | |
317 | * Set `data->file` to prepare it to read the packet described | |
318 | * by `index_entry`. | |
319 | */ | |
320 | ||
4164020e SM |
321 | static enum ctf_msg_iter_medium_status |
322 | ctf_fs_ds_group_medops_set_file(struct ctf_fs_ds_group_medops_data *data, | |
323 | struct ctf_fs_ds_index_entry *index_entry, | |
324 | bt_self_message_iterator *self_msg_iter, bt_logging_level log_level) | |
f6e68e70 | 325 | { |
4164020e SM |
326 | enum ctf_msg_iter_medium_status status; |
327 | ||
328 | BT_ASSERT(data); | |
329 | BT_ASSERT(index_entry); | |
330 | ||
331 | /* Check if that file is already the one mapped. */ | |
332 | if (!data->file || strcmp(index_entry->path, data->file->file->path->str) != 0) { | |
333 | /* Destroy the previously used file. */ | |
334 | ctf_fs_ds_file_destroy(data->file); | |
335 | ||
336 | /* Create the new file. */ | |
337 | data->file = | |
76edbcf1 SM |
338 | ctf_fs_ds_file_create(data->ds_file_group->ctf_fs_trace, data->ds_file_group->stream, |
339 | index_entry->path, log_level); | |
4164020e SM |
340 | if (!data->file) { |
341 | BT_MSG_ITER_LOGE_APPEND_CAUSE(self_msg_iter, "failed to create ctf_fs_ds_file."); | |
342 | status = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; | |
343 | goto end; | |
344 | } | |
345 | } | |
346 | ||
347 | /* | |
348 | * Ensure the right portion of the file will be returned on the next | |
349 | * request_bytes call. | |
350 | */ | |
351 | status = ds_file_mmap(data->file, index_entry->offset); | |
352 | if (status != CTF_MSG_ITER_MEDIUM_STATUS_OK) { | |
353 | goto end; | |
354 | } | |
355 | ||
356 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
f6e68e70 SM |
357 | |
358 | end: | |
4164020e | 359 | return status; |
f6e68e70 SM |
360 | } |
361 | ||
4164020e | 362 | static enum ctf_msg_iter_medium_status medop_group_switch_packet(void *void_data) |
f6e68e70 | 363 | { |
4164020e SM |
364 | struct ctf_fs_ds_group_medops_data *data = (struct ctf_fs_ds_group_medops_data *) void_data; |
365 | struct ctf_fs_ds_index_entry *index_entry; | |
366 | enum ctf_msg_iter_medium_status status; | |
367 | ||
368 | /* If we have gone through all index entries, we are done. */ | |
369 | if (data->next_index_entry_index >= data->ds_file_group->index->entries->len) { | |
370 | status = CTF_MSG_ITER_MEDIUM_STATUS_EOF; | |
371 | goto end; | |
372 | } | |
373 | ||
374 | /* | |
375 | * Otherwise, look up the next index entry / packet and prepare it | |
376 | * for reading. | |
377 | */ | |
378 | index_entry = (struct ctf_fs_ds_index_entry *) g_ptr_array_index( | |
379 | data->ds_file_group->index->entries, data->next_index_entry_index); | |
380 | ||
381 | status = | |
382 | ctf_fs_ds_group_medops_set_file(data, index_entry, data->self_msg_iter, data->log_level); | |
383 | if (status != CTF_MSG_ITER_MEDIUM_STATUS_OK) { | |
384 | goto end; | |
385 | } | |
386 | ||
387 | data->next_index_entry_index++; | |
388 | ||
389 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
f6e68e70 | 390 | end: |
4164020e | 391 | return status; |
f6e68e70 SM |
392 | } |
393 | ||
4164020e | 394 | void ctf_fs_ds_group_medops_data_destroy(struct ctf_fs_ds_group_medops_data *data) |
f6e68e70 | 395 | { |
4164020e SM |
396 | if (!data) { |
397 | goto end; | |
398 | } | |
f6e68e70 | 399 | |
4164020e | 400 | ctf_fs_ds_file_destroy(data->file); |
f6e68e70 | 401 | |
4164020e | 402 | g_free(data); |
f6e68e70 SM |
403 | |
404 | end: | |
4164020e | 405 | return; |
f6e68e70 SM |
406 | } |
407 | ||
408 | enum ctf_msg_iter_medium_status ctf_fs_ds_group_medops_data_create( | |
4164020e SM |
409 | struct ctf_fs_ds_file_group *ds_file_group, bt_self_message_iterator *self_msg_iter, |
410 | bt_logging_level log_level, struct ctf_fs_ds_group_medops_data **out) | |
f6e68e70 | 411 | { |
4164020e SM |
412 | struct ctf_fs_ds_group_medops_data *data; |
413 | enum ctf_msg_iter_medium_status status; | |
414 | ||
415 | BT_ASSERT(self_msg_iter); | |
416 | BT_ASSERT(ds_file_group); | |
417 | BT_ASSERT(ds_file_group->index); | |
418 | BT_ASSERT(ds_file_group->index->entries->len > 0); | |
419 | ||
420 | data = g_new0(struct ctf_fs_ds_group_medops_data, 1); | |
421 | if (!data) { | |
422 | BT_MSG_ITER_LOGE_APPEND_CAUSE(self_msg_iter, | |
423 | "Failed to allocate a struct ctf_fs_ds_group_medops_data"); | |
424 | status = CTF_MSG_ITER_MEDIUM_STATUS_MEMORY_ERROR; | |
425 | goto error; | |
426 | } | |
427 | ||
428 | data->ds_file_group = ds_file_group; | |
429 | data->self_msg_iter = self_msg_iter; | |
430 | data->log_level = log_level; | |
431 | ||
432 | /* | |
433 | * No need to prepare the first file. ctf_msg_iter will call | |
434 | * switch_packet before reading the first packet, it will be | |
435 | * done then. | |
436 | */ | |
437 | ||
438 | *out = data; | |
439 | status = CTF_MSG_ITER_MEDIUM_STATUS_OK; | |
440 | goto end; | |
f6e68e70 SM |
441 | |
442 | error: | |
4164020e | 443 | ctf_fs_ds_group_medops_data_destroy(data); |
f6e68e70 SM |
444 | |
445 | end: | |
4164020e | 446 | return status; |
f6e68e70 SM |
447 | } |
448 | ||
449 | void ctf_fs_ds_group_medops_data_reset(struct ctf_fs_ds_group_medops_data *data) | |
450 | { | |
4164020e | 451 | data->next_index_entry_index = 0; |
f6e68e70 SM |
452 | } |
453 | ||
454 | struct ctf_msg_iter_medium_ops ctf_fs_ds_group_medops = { | |
4164020e | 455 | .request_bytes = medop_group_request_bytes, |
f6e68e70 | 456 | |
4164020e SM |
457 | /* |
458 | * We don't support seeking using this medops. It would probably be | |
459 | * possible, but it's not needed at the moment. | |
460 | */ | |
461 | .seek = NULL, | |
087cd0f5 | 462 | |
4164020e SM |
463 | .switch_packet = medop_group_switch_packet, |
464 | .borrow_stream = medop_group_borrow_stream, | |
f6e68e70 SM |
465 | }; |
466 | ||
4164020e SM |
467 | static struct ctf_fs_ds_index_entry *ctf_fs_ds_index_entry_create(bt_self_component *self_comp, |
468 | bt_logging_level log_level) | |
6834784d | 469 | { |
4164020e | 470 | struct ctf_fs_ds_index_entry *entry; |
6834784d | 471 | |
4164020e SM |
472 | entry = g_new0(struct ctf_fs_ds_index_entry, 1); |
473 | if (!entry) { | |
474 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Failed to allocate a ctf_fs_ds_index_entry."); | |
475 | goto end; | |
476 | } | |
6834784d | 477 | |
4164020e | 478 | entry->packet_seq_num = UINT64_MAX; |
6834784d SM |
479 | |
480 | end: | |
4164020e | 481 | return entry; |
6834784d SM |
482 | } |
483 | ||
4164020e | 484 | static int convert_cycles_to_ns(struct ctf_clock_class *clock_class, uint64_t cycles, int64_t *ns) |
b6c3dcb2 | 485 | { |
4164020e SM |
486 | return bt_util_clock_cycles_to_ns_from_origin(cycles, clock_class->frequency, |
487 | clock_class->offset_seconds, | |
488 | clock_class->offset_cycles, ns); | |
97ade20b JG |
489 | } |
490 | ||
4164020e SM |
491 | static struct ctf_fs_ds_index *build_index_from_idx_file(struct ctf_fs_ds_file *ds_file, |
492 | struct ctf_fs_ds_file_info *file_info, | |
493 | struct ctf_msg_iter *msg_iter) | |
97ade20b | 494 | { |
4164020e SM |
495 | int ret; |
496 | gchar *directory = NULL; | |
497 | gchar *basename = NULL; | |
498 | GString *index_basename = NULL; | |
499 | gchar *index_file_path = NULL; | |
500 | GMappedFile *mapped_file = NULL; | |
501 | gsize filesize; | |
502 | const char *mmap_begin = NULL, *file_pos = NULL; | |
503 | const struct ctf_packet_index_file_hdr *header = NULL; | |
504 | struct ctf_fs_ds_index *index = NULL; | |
505 | struct ctf_fs_ds_index_entry *index_entry = NULL, *prev_index_entry = NULL; | |
506 | uint64_t total_packets_size = 0; | |
507 | size_t file_index_entry_size; | |
508 | size_t file_entry_count; | |
509 | size_t i; | |
510 | struct ctf_stream_class *sc; | |
511 | struct ctf_msg_iter_packet_properties props; | |
512 | uint32_t version_major, version_minor; | |
513 | bt_self_component *self_comp = ds_file->self_comp; | |
514 | bt_logging_level log_level = ds_file->log_level; | |
515 | ||
516 | BT_COMP_LOGI("Building index from .idx file of stream file %s", ds_file->file->path->str); | |
517 | ret = ctf_msg_iter_get_packet_properties(msg_iter, &props); | |
518 | if (ret) { | |
519 | BT_COMP_LOGI_STR("Cannot read first packet's header and context fields."); | |
520 | goto error; | |
521 | } | |
522 | ||
523 | sc = ctf_trace_class_borrow_stream_class_by_id(ds_file->metadata->tc, props.stream_class_id); | |
524 | BT_ASSERT(sc); | |
525 | if (!sc->default_clock_class) { | |
526 | BT_COMP_LOGI_STR("Cannot find stream class's default clock class."); | |
527 | goto error; | |
528 | } | |
529 | ||
530 | /* Look for index file in relative path index/name.idx. */ | |
531 | basename = g_path_get_basename(ds_file->file->path->str); | |
532 | if (!basename) { | |
533 | BT_COMP_LOGE("Cannot get the basename of datastream file %s", ds_file->file->path->str); | |
534 | goto error; | |
535 | } | |
536 | ||
537 | directory = g_path_get_dirname(ds_file->file->path->str); | |
538 | if (!directory) { | |
539 | BT_COMP_LOGE("Cannot get dirname of datastream file %s", ds_file->file->path->str); | |
540 | goto error; | |
541 | } | |
542 | ||
543 | index_basename = g_string_new(basename); | |
544 | if (!index_basename) { | |
545 | BT_COMP_LOGE_STR("Cannot allocate index file basename string"); | |
546 | goto error; | |
547 | } | |
548 | ||
549 | g_string_append(index_basename, ".idx"); | |
550 | index_file_path = g_build_filename(directory, "index", index_basename->str, NULL); | |
551 | mapped_file = g_mapped_file_new(index_file_path, FALSE, NULL); | |
552 | if (!mapped_file) { | |
553 | BT_COMP_LOGD("Cannot create new mapped file %s", index_file_path); | |
554 | goto error; | |
555 | } | |
556 | ||
557 | /* | |
558 | * The g_mapped_file API limits us to 4GB files on 32-bit. | |
559 | * Traces with such large indexes have never been seen in the wild, | |
560 | * but this would need to be adjusted to support them. | |
561 | */ | |
562 | filesize = g_mapped_file_get_length(mapped_file); | |
563 | if (filesize < sizeof(*header)) { | |
564 | BT_COMP_LOGW("Invalid LTTng trace index file: " | |
565 | "file size (%zu bytes) < header size (%zu bytes)", | |
566 | filesize, sizeof(*header)); | |
567 | goto error; | |
568 | } | |
569 | ||
570 | mmap_begin = g_mapped_file_get_contents(mapped_file); | |
571 | header = (struct ctf_packet_index_file_hdr *) mmap_begin; | |
572 | ||
573 | file_pos = g_mapped_file_get_contents(mapped_file) + sizeof(*header); | |
574 | if (be32toh(header->magic) != CTF_INDEX_MAGIC) { | |
575 | BT_COMP_LOGW_STR("Invalid LTTng trace index: \"magic\" field validation failed"); | |
576 | goto error; | |
577 | } | |
578 | ||
579 | version_major = be32toh(header->index_major); | |
580 | version_minor = be32toh(header->index_minor); | |
581 | if (version_major != 1) { | |
582 | BT_COMP_LOGW("Unknown LTTng trace index version: " | |
583 | "major=%" PRIu32 ", minor=%" PRIu32, | |
584 | version_major, version_minor); | |
585 | goto error; | |
586 | } | |
587 | ||
588 | file_index_entry_size = be32toh(header->packet_index_len); | |
589 | if (file_index_entry_size < CTF_INDEX_1_0_SIZE) { | |
590 | BT_COMP_LOGW( | |
591 | "Invalid `packet_index_len` in LTTng trace index file (`packet_index_len` < CTF index 1.0 index entry size): " | |
592 | "packet_index_len=%zu, CTF_INDEX_1_0_SIZE=%zu", | |
593 | file_index_entry_size, CTF_INDEX_1_0_SIZE); | |
594 | goto error; | |
595 | } | |
596 | ||
597 | file_entry_count = (filesize - sizeof(*header)) / file_index_entry_size; | |
598 | if ((filesize - sizeof(*header)) % file_index_entry_size) { | |
599 | BT_COMP_LOGW("Invalid LTTng trace index: the index's size after the header " | |
600 | "(%zu bytes) is not a multiple of the index entry size " | |
601 | "(%zu bytes)", | |
602 | (filesize - sizeof(*header)), sizeof(*header)); | |
603 | goto error; | |
604 | } | |
605 | ||
606 | index = ctf_fs_ds_index_create(ds_file->log_level, ds_file->self_comp); | |
607 | if (!index) { | |
608 | goto error; | |
609 | } | |
610 | ||
611 | for (i = 0; i < file_entry_count; i++) { | |
612 | struct ctf_packet_index *file_index = (struct ctf_packet_index *) file_pos; | |
613 | uint64_t packet_size = be64toh(file_index->packet_size); | |
614 | ||
615 | if (packet_size % CHAR_BIT) { | |
616 | BT_COMP_LOGW("Invalid packet size encountered in LTTng trace index file"); | |
617 | goto error; | |
618 | } | |
619 | ||
620 | index_entry = ctf_fs_ds_index_entry_create(ds_file->self_comp, ds_file->log_level); | |
621 | if (!index_entry) { | |
622 | BT_COMP_LOGE_APPEND_CAUSE(ds_file->self_comp, | |
623 | "Failed to create a ctf_fs_ds_index_entry."); | |
624 | goto error; | |
625 | } | |
626 | ||
627 | /* Set path to stream file. */ | |
628 | index_entry->path = file_info->path->str; | |
629 | ||
630 | /* Convert size in bits to bytes. */ | |
631 | packet_size /= CHAR_BIT; | |
632 | index_entry->packet_size = packet_size; | |
633 | ||
634 | index_entry->offset = be64toh(file_index->offset); | |
635 | if (i != 0 && index_entry->offset < prev_index_entry->offset) { | |
636 | BT_COMP_LOGW( | |
637 | "Invalid, non-monotonic, packet offset encountered in LTTng trace index file: " | |
638 | "previous offset=%" PRIu64 ", current offset=%" PRIu64, | |
639 | prev_index_entry->offset, index_entry->offset); | |
640 | goto error; | |
641 | } | |
642 | ||
643 | index_entry->timestamp_begin = be64toh(file_index->timestamp_begin); | |
644 | index_entry->timestamp_end = be64toh(file_index->timestamp_end); | |
645 | if (index_entry->timestamp_end < index_entry->timestamp_begin) { | |
646 | BT_COMP_LOGW( | |
647 | "Invalid packet time bounds encountered in LTTng trace index file (begin > end): " | |
648 | "timestamp_begin=%" PRIu64 "timestamp_end=%" PRIu64, | |
649 | index_entry->timestamp_begin, index_entry->timestamp_end); | |
650 | goto error; | |
651 | } | |
652 | ||
653 | /* Convert the packet's bound to nanoseconds since Epoch. */ | |
654 | ret = convert_cycles_to_ns(sc->default_clock_class, index_entry->timestamp_begin, | |
655 | &index_entry->timestamp_begin_ns); | |
656 | if (ret) { | |
657 | BT_COMP_LOGI_STR( | |
658 | "Failed to convert raw timestamp to nanoseconds since Epoch during index parsing"); | |
659 | goto error; | |
660 | } | |
661 | ret = convert_cycles_to_ns(sc->default_clock_class, index_entry->timestamp_end, | |
662 | &index_entry->timestamp_end_ns); | |
663 | if (ret) { | |
664 | BT_COMP_LOGI_STR( | |
665 | "Failed to convert raw timestamp to nanoseconds since Epoch during LTTng trace index parsing"); | |
666 | goto error; | |
667 | } | |
668 | ||
669 | if (version_minor >= 1) { | |
670 | index_entry->packet_seq_num = be64toh(file_index->packet_seq_num); | |
671 | } | |
672 | ||
673 | total_packets_size += packet_size; | |
674 | file_pos += file_index_entry_size; | |
675 | ||
676 | prev_index_entry = index_entry; | |
677 | ||
678 | /* Give ownership of `index_entry` to `index->entries`. */ | |
679 | g_ptr_array_add(index->entries, index_entry); | |
680 | index_entry = NULL; | |
681 | } | |
682 | ||
683 | /* Validate that the index addresses the complete stream. */ | |
684 | if (ds_file->file->size != total_packets_size) { | |
685 | BT_COMP_LOGW("Invalid LTTng trace index file; indexed size != stream file size: " | |
686 | "file-size=%" PRIu64 ", total-packets-size=%" PRIu64, | |
687 | ds_file->file->size, total_packets_size); | |
688 | goto error; | |
689 | } | |
b6c3dcb2 | 690 | end: |
4164020e SM |
691 | g_free(directory); |
692 | g_free(basename); | |
693 | g_free(index_file_path); | |
694 | if (index_basename) { | |
695 | g_string_free(index_basename, TRUE); | |
696 | } | |
697 | if (mapped_file) { | |
698 | g_mapped_file_unref(mapped_file); | |
699 | } | |
700 | return index; | |
97ade20b | 701 | error: |
4164020e SM |
702 | ctf_fs_ds_index_destroy(index); |
703 | g_free(index_entry); | |
704 | index = NULL; | |
705 | goto end; | |
b6c3dcb2 JG |
706 | } |
707 | ||
4164020e SM |
708 | static int init_index_entry(struct ctf_fs_ds_index_entry *entry, struct ctf_fs_ds_file *ds_file, |
709 | struct ctf_msg_iter_packet_properties *props, off_t packet_size, | |
710 | off_t packet_offset) | |
9e0c8dbb | 711 | { |
4164020e SM |
712 | int ret = 0; |
713 | struct ctf_stream_class *sc; | |
714 | bt_self_component *self_comp = ds_file->self_comp; | |
715 | bt_logging_level log_level = ds_file->log_level; | |
716 | ||
717 | sc = ctf_trace_class_borrow_stream_class_by_id(ds_file->metadata->tc, props->stream_class_id); | |
718 | BT_ASSERT(sc); | |
719 | BT_ASSERT(packet_offset >= 0); | |
720 | entry->offset = packet_offset; | |
721 | BT_ASSERT(packet_size >= 0); | |
722 | entry->packet_size = packet_size; | |
723 | ||
724 | if (props->snapshots.beginning_clock != UINT64_C(-1)) { | |
725 | entry->timestamp_begin = props->snapshots.beginning_clock; | |
726 | ||
727 | /* Convert the packet's bound to nanoseconds since Epoch. */ | |
728 | ret = convert_cycles_to_ns(sc->default_clock_class, props->snapshots.beginning_clock, | |
729 | &entry->timestamp_begin_ns); | |
730 | if (ret) { | |
731 | BT_COMP_LOGI_STR("Failed to convert raw timestamp to nanoseconds since Epoch."); | |
732 | goto end; | |
733 | } | |
734 | } else { | |
735 | entry->timestamp_begin = UINT64_C(-1); | |
736 | entry->timestamp_begin_ns = UINT64_C(-1); | |
737 | } | |
738 | ||
739 | if (props->snapshots.end_clock != UINT64_C(-1)) { | |
740 | entry->timestamp_end = props->snapshots.end_clock; | |
741 | ||
742 | /* Convert the packet's bound to nanoseconds since Epoch. */ | |
743 | ret = convert_cycles_to_ns(sc->default_clock_class, props->snapshots.end_clock, | |
744 | &entry->timestamp_end_ns); | |
745 | if (ret) { | |
746 | BT_COMP_LOGI_STR("Failed to convert raw timestamp to nanoseconds since Epoch."); | |
747 | goto end; | |
748 | } | |
749 | } else { | |
750 | entry->timestamp_end = UINT64_C(-1); | |
751 | entry->timestamp_end_ns = UINT64_C(-1); | |
752 | } | |
0b29603d | 753 | |
9e0c8dbb | 754 | end: |
4164020e | 755 | return ret; |
9e0c8dbb JG |
756 | } |
757 | ||
4164020e SM |
758 | static struct ctf_fs_ds_index *build_index_from_stream_file(struct ctf_fs_ds_file *ds_file, |
759 | struct ctf_fs_ds_file_info *file_info, | |
760 | struct ctf_msg_iter *msg_iter) | |
9e0c8dbb | 761 | { |
4164020e SM |
762 | int ret; |
763 | struct ctf_fs_ds_index *index = NULL; | |
764 | enum ctf_msg_iter_status iter_status = CTF_MSG_ITER_STATUS_OK; | |
765 | off_t current_packet_offset_bytes = 0; | |
766 | bt_self_component *self_comp = ds_file->self_comp; | |
767 | bt_logging_level log_level = ds_file->log_level; | |
768 | ||
769 | BT_COMP_LOGI("Indexing stream file %s", ds_file->file->path->str); | |
770 | ||
771 | index = ctf_fs_ds_index_create(ds_file->log_level, ds_file->self_comp); | |
772 | if (!index) { | |
773 | goto error; | |
774 | } | |
775 | ||
776 | while (true) { | |
777 | off_t current_packet_size_bytes; | |
778 | struct ctf_fs_ds_index_entry *index_entry; | |
779 | struct ctf_msg_iter_packet_properties props; | |
780 | ||
781 | if (current_packet_offset_bytes < 0) { | |
782 | BT_COMP_LOGE_STR("Cannot get the current packet's offset."); | |
783 | goto error; | |
784 | } else if (current_packet_offset_bytes > ds_file->file->size) { | |
785 | BT_COMP_LOGE_STR("Unexpected current packet's offset (larger than file)."); | |
786 | goto error; | |
787 | } else if (current_packet_offset_bytes == ds_file->file->size) { | |
788 | /* No more data */ | |
789 | break; | |
790 | } | |
791 | ||
792 | iter_status = ctf_msg_iter_seek(msg_iter, current_packet_offset_bytes); | |
793 | if (iter_status != CTF_MSG_ITER_STATUS_OK) { | |
794 | goto error; | |
795 | } | |
796 | ||
797 | iter_status = ctf_msg_iter_get_packet_properties(msg_iter, &props); | |
798 | if (iter_status != CTF_MSG_ITER_STATUS_OK) { | |
799 | goto error; | |
800 | } | |
801 | ||
802 | if (props.exp_packet_total_size >= 0) { | |
803 | current_packet_size_bytes = (uint64_t) props.exp_packet_total_size / 8; | |
804 | } else { | |
805 | current_packet_size_bytes = ds_file->file->size; | |
806 | } | |
807 | ||
808 | if (current_packet_offset_bytes + current_packet_size_bytes > ds_file->file->size) { | |
809 | BT_COMP_LOGW("Invalid packet size reported in file: stream=\"%s\", " | |
810 | "packet-offset=%jd, packet-size-bytes=%jd, " | |
811 | "file-size=%jd", | |
812 | ds_file->file->path->str, (intmax_t) current_packet_offset_bytes, | |
813 | (intmax_t) current_packet_size_bytes, (intmax_t) ds_file->file->size); | |
814 | goto error; | |
815 | } | |
816 | ||
817 | index_entry = ctf_fs_ds_index_entry_create(ds_file->self_comp, ds_file->log_level); | |
818 | if (!index_entry) { | |
819 | BT_COMP_LOGE_APPEND_CAUSE(ds_file->self_comp, | |
820 | "Failed to create a ctf_fs_ds_index_entry."); | |
821 | goto error; | |
822 | } | |
823 | ||
824 | /* Set path to stream file. */ | |
825 | index_entry->path = file_info->path->str; | |
826 | ||
827 | ret = init_index_entry(index_entry, ds_file, &props, current_packet_size_bytes, | |
828 | current_packet_offset_bytes); | |
829 | if (ret) { | |
830 | g_free(index_entry); | |
831 | goto error; | |
832 | } | |
833 | ||
834 | g_ptr_array_add(index->entries, index_entry); | |
835 | ||
836 | current_packet_offset_bytes += current_packet_size_bytes; | |
837 | BT_COMP_LOGD("Seeking to next packet: current-packet-offset=%jd, " | |
838 | "next-packet-offset=%jd", | |
839 | (intmax_t) (current_packet_offset_bytes - current_packet_size_bytes), | |
840 | (intmax_t) current_packet_offset_bytes); | |
841 | } | |
312c056a | 842 | |
9e0c8dbb | 843 | end: |
4164020e | 844 | return index; |
312c056a | 845 | |
9e0c8dbb | 846 | error: |
4164020e SM |
847 | ctf_fs_ds_index_destroy(index); |
848 | index = NULL; | |
849 | goto end; | |
9e0c8dbb JG |
850 | } |
851 | ||
76edbcf1 SM |
852 | struct ctf_fs_ds_file *ctf_fs_ds_file_create(struct ctf_fs_trace *ctf_fs_trace, bt_stream *stream, |
853 | const char *path, bt_logging_level log_level) | |
e98a2d6e | 854 | { |
4164020e SM |
855 | int ret; |
856 | const size_t offset_align = bt_mmap_get_offset_align_size(log_level); | |
857 | struct ctf_fs_ds_file *ds_file = g_new0(struct ctf_fs_ds_file, 1); | |
858 | ||
859 | if (!ds_file) { | |
860 | goto error; | |
861 | } | |
862 | ||
863 | ds_file->log_level = log_level; | |
864 | ds_file->self_comp = ctf_fs_trace->self_comp; | |
4164020e SM |
865 | ds_file->file = ctf_fs_file_create(log_level, ds_file->self_comp); |
866 | if (!ds_file->file) { | |
867 | goto error; | |
868 | } | |
869 | ||
870 | ds_file->stream = stream; | |
871 | bt_stream_get_ref(ds_file->stream); | |
872 | ds_file->metadata = ctf_fs_trace->metadata; | |
873 | g_string_assign(ds_file->file->path, path); | |
874 | ret = ctf_fs_file_open(ds_file->file, "rb"); | |
875 | if (ret) { | |
876 | goto error; | |
877 | } | |
878 | ||
879 | ds_file->mmap_max_len = offset_align * 2048; | |
880 | ||
881 | goto end; | |
1a9f7075 | 882 | |
e98a2d6e | 883 | error: |
4164020e SM |
884 | /* Do not touch "borrowed" file. */ |
885 | ctf_fs_ds_file_destroy(ds_file); | |
886 | ds_file = NULL; | |
1a9f7075 | 887 | |
e98a2d6e | 888 | end: |
4164020e | 889 | return ds_file; |
e98a2d6e PP |
890 | } |
891 | ||
4164020e SM |
892 | struct ctf_fs_ds_index *ctf_fs_ds_file_build_index(struct ctf_fs_ds_file *ds_file, |
893 | struct ctf_fs_ds_file_info *file_info, | |
894 | struct ctf_msg_iter *msg_iter) | |
97ade20b | 895 | { |
4164020e SM |
896 | struct ctf_fs_ds_index *index; |
897 | bt_self_component *self_comp = ds_file->self_comp; | |
898 | bt_logging_level log_level = ds_file->log_level; | |
899 | ||
900 | index = build_index_from_idx_file(ds_file, file_info, msg_iter); | |
901 | if (index) { | |
902 | goto end; | |
903 | } | |
904 | ||
905 | BT_COMP_LOGI("Failed to build index from .index file; " | |
906 | "falling back to stream indexing."); | |
907 | index = build_index_from_stream_file(ds_file, file_info, msg_iter); | |
9e0c8dbb | 908 | end: |
4164020e | 909 | return index; |
97ade20b JG |
910 | } |
911 | ||
4c65a157 | 912 | struct ctf_fs_ds_index *ctf_fs_ds_index_create(bt_logging_level log_level, |
4164020e | 913 | bt_self_component *self_comp) |
7ed5243a | 914 | { |
4164020e | 915 | struct ctf_fs_ds_index *index = g_new0(struct ctf_fs_ds_index, 1); |
7ed5243a | 916 | |
4164020e SM |
917 | if (!index) { |
918 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_comp, "Failed to allocate index"); | |
919 | goto error; | |
920 | } | |
7ed5243a | 921 | |
4164020e SM |
922 | index->entries = g_ptr_array_new_with_free_func((GDestroyNotify) g_free); |
923 | if (!index->entries) { | |
924 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_comp, | |
925 | "Failed to allocate index entries."); | |
926 | goto error; | |
927 | } | |
7ed5243a | 928 | |
4164020e | 929 | goto end; |
7ed5243a FD |
930 | |
931 | error: | |
4164020e SM |
932 | ctf_fs_ds_index_destroy(index); |
933 | index = NULL; | |
7ed5243a | 934 | end: |
4164020e | 935 | return index; |
7ed5243a FD |
936 | } |
937 | ||
94cf822e | 938 | void ctf_fs_ds_file_destroy(struct ctf_fs_ds_file *ds_file) |
e98a2d6e | 939 | { |
4164020e SM |
940 | if (!ds_file) { |
941 | return; | |
942 | } | |
043e2020 | 943 | |
4164020e SM |
944 | bt_stream_put_ref(ds_file->stream); |
945 | (void) ds_file_munmap(ds_file); | |
0982a26d | 946 | |
4164020e SM |
947 | if (ds_file->file) { |
948 | ctf_fs_file_destroy(ds_file->file); | |
949 | } | |
e98a2d6e | 950 | |
4164020e | 951 | g_free(ds_file); |
e98a2d6e | 952 | } |
4f1f88a6 | 953 | |
97ade20b JG |
954 | void ctf_fs_ds_index_destroy(struct ctf_fs_ds_index *index) |
955 | { | |
4164020e SM |
956 | if (!index) { |
957 | return; | |
958 | } | |
959 | ||
960 | if (index->entries) { | |
961 | g_ptr_array_free(index->entries, TRUE); | |
962 | } | |
963 | g_free(index); | |
97ade20b | 964 | } |