2 * Copyright 2016-2017 - Philippe Proulx <pproulx@efficios.com>
3 * Copyright 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
4 * Copyright 2010-2011 - EfficiOS Inc. and Linux Foundation
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 #include <babeltrace/compat/mman-internal.h>
33 #include <babeltrace/endian-internal.h>
34 #include <babeltrace/babeltrace.h>
35 #include <babeltrace/common-internal.h>
38 #include "../common/notif-iter/notif-iter.h"
39 #include <babeltrace/assert-internal.h>
40 #include "data-stream-file.h"
43 #define BT_LOG_TAG "PLUGIN-CTF-FS-SRC-DS"
47 size_t remaining_mmap_bytes(struct ctf_fs_ds_file
*ds_file
)
49 return ds_file
->mmap_len
- ds_file
->request_offset
;
53 int ds_file_munmap(struct ctf_fs_ds_file
*ds_file
)
57 if (!ds_file
|| !ds_file
->mmap_addr
) {
61 if (bt_munmap(ds_file
->mmap_addr
, ds_file
->mmap_len
)) {
62 BT_LOGE_ERRNO("Cannot memory-unmap file",
63 ": address=%p, size=%zu, file_path=\"%s\", file=%p",
64 ds_file
->mmap_addr
, ds_file
->mmap_len
,
65 ds_file
->file
? ds_file
->file
->path
->str
: "NULL",
66 ds_file
->file
? ds_file
->file
->fp
: NULL
);
71 ds_file
->mmap_addr
= NULL
;
78 enum bt_notif_iter_medium_status
ds_file_mmap_next(
79 struct ctf_fs_ds_file
*ds_file
)
81 enum bt_notif_iter_medium_status ret
=
82 BT_NOTIF_ITER_MEDIUM_STATUS_OK
;
84 /* Unmap old region */
85 if (ds_file
->mmap_addr
) {
86 if (ds_file_munmap(ds_file
)) {
91 * mmap_len is guaranteed to be page-aligned except on the
92 * last mapping where it may not be possible (since the file's
93 * size itself may not be a page multiple).
95 ds_file
->mmap_offset
+= ds_file
->mmap_len
;
96 ds_file
->request_offset
= 0;
99 ds_file
->mmap_len
= MIN(ds_file
->file
->size
- ds_file
->mmap_offset
,
100 ds_file
->mmap_max_len
);
101 if (ds_file
->mmap_len
== 0) {
102 ret
= BT_NOTIF_ITER_MEDIUM_STATUS_EOF
;
106 BT_ASSERT(ds_file
->mmap_len
);
107 ds_file
->mmap_addr
= bt_mmap((void *) 0, ds_file
->mmap_len
,
108 PROT_READ
, MAP_PRIVATE
, fileno(ds_file
->file
->fp
),
109 ds_file
->mmap_offset
);
110 if (ds_file
->mmap_addr
== MAP_FAILED
) {
111 BT_LOGE("Cannot memory-map address (size %zu) of file \"%s\" (%p) at offset %jd: %s",
112 ds_file
->mmap_len
, ds_file
->file
->path
->str
,
113 ds_file
->file
->fp
, (intmax_t) ds_file
->mmap_offset
,
120 ds_file_munmap(ds_file
);
121 ret
= BT_NOTIF_ITER_MEDIUM_STATUS_ERROR
;
127 enum bt_notif_iter_medium_status
medop_request_bytes(
128 size_t request_sz
, uint8_t **buffer_addr
,
129 size_t *buffer_sz
, void *data
)
131 enum bt_notif_iter_medium_status status
=
132 BT_NOTIF_ITER_MEDIUM_STATUS_OK
;
133 struct ctf_fs_ds_file
*ds_file
= data
;
135 if (request_sz
== 0) {
139 /* Check if we have at least one memory-mapped byte left */
140 if (remaining_mmap_bytes(ds_file
) == 0) {
141 /* Are we at the end of the file? */
142 if (ds_file
->mmap_offset
>= ds_file
->file
->size
) {
143 BT_LOGD("Reached end of file \"%s\" (%p)",
144 ds_file
->file
->path
->str
, ds_file
->file
->fp
);
145 status
= BT_NOTIF_ITER_MEDIUM_STATUS_EOF
;
149 status
= ds_file_mmap_next(ds_file
);
151 case BT_NOTIF_ITER_MEDIUM_STATUS_OK
:
153 case BT_NOTIF_ITER_MEDIUM_STATUS_EOF
:
156 BT_LOGE("Cannot memory-map next region of file \"%s\" (%p)",
157 ds_file
->file
->path
->str
,
163 *buffer_sz
= MIN(remaining_mmap_bytes(ds_file
), request_sz
);
164 *buffer_addr
= ((uint8_t *) ds_file
->mmap_addr
) + ds_file
->request_offset
;
165 ds_file
->request_offset
+= *buffer_sz
;
169 status
= BT_NOTIF_ITER_MEDIUM_STATUS_ERROR
;
176 struct bt_stream
*medop_get_stream(
177 struct bt_stream_class
*stream_class
, uint64_t stream_id
,
180 struct ctf_fs_ds_file
*ds_file
= data
;
181 struct bt_stream_class
*ds_file_stream_class
;
182 struct bt_stream
*stream
= NULL
;
184 ds_file_stream_class
= bt_stream_get_class(ds_file
->stream
);
185 bt_put(ds_file_stream_class
);
187 if (stream_class
!= ds_file_stream_class
) {
189 * Not supported: two packets described by two different
190 * stream classes within the same data stream file.
195 stream
= ds_file
->stream
;
202 enum bt_notif_iter_medium_status
medop_seek(
203 enum bt_notif_iter_seek_whence whence
, off_t offset
,
206 enum bt_notif_iter_medium_status ret
=
207 BT_NOTIF_ITER_MEDIUM_STATUS_OK
;
208 struct ctf_fs_ds_file
*ds_file
= data
;
209 off_t file_size
= ds_file
->file
->size
;
211 if (whence
!= BT_NOTIF_ITER_SEEK_WHENCE_SET
||
212 offset
< 0 || offset
> file_size
) {
213 BT_LOGE("Invalid medium seek request: whence=%d, offset=%jd, "
214 "file-size=%jd", (int) whence
, offset
,
216 ret
= BT_NOTIF_ITER_MEDIUM_STATUS_INVAL
;
221 * Determine whether or not the destination is contained within the
224 if (ds_file
->mmap_addr
&& (offset
< ds_file
->mmap_offset
||
225 offset
>= ds_file
->mmap_offset
+ ds_file
->mmap_len
)) {
227 off_t offset_in_mapping
= offset
% bt_common_get_page_size();
229 BT_LOGD("Medium seek request cannot be accomodated by the current "
230 "file mapping: offset=%jd, mmap-offset=%jd, "
231 "mmap-len=%zu", offset
, ds_file
->mmap_offset
,
233 unmap_ret
= ds_file_munmap(ds_file
);
235 ret
= BT_NOTIF_ITER_MEDIUM_STATUS_ERROR
;
239 ds_file
->mmap_offset
= offset
- offset_in_mapping
;
240 ds_file
->request_offset
= offset_in_mapping
;
241 ret
= ds_file_mmap_next(ds_file
);
242 if (ret
!= BT_NOTIF_ITER_MEDIUM_STATUS_OK
) {
246 ds_file
->request_offset
= offset
- ds_file
->mmap_offset
;
249 ds_file
->end_reached
= (offset
== file_size
);
255 struct bt_notif_iter_medium_ops ctf_fs_ds_file_medops
= {
256 .request_bytes
= medop_request_bytes
,
257 .get_stream
= medop_get_stream
,
262 struct ctf_fs_ds_index
*ctf_fs_ds_index_create(size_t length
)
264 struct ctf_fs_ds_index
*index
= g_new0(struct ctf_fs_ds_index
, 1);
267 BT_LOGE_STR("Failed to allocate index");
271 index
->entries
= g_array_sized_new(FALSE
, TRUE
,
272 sizeof(struct ctf_fs_ds_index_entry
), length
);
273 if (!index
->entries
) {
274 BT_LOGE("Failed to allocate %zu index entries.", length
);
277 g_array_set_size(index
->entries
, length
);
281 ctf_fs_ds_index_destroy(index
);
285 /* Returns a new, zeroed, index entry. */
287 struct ctf_fs_ds_index_entry
*ctf_fs_ds_index_add_new_entry(
288 struct ctf_fs_ds_index
*index
)
290 g_array_set_size(index
->entries
, index
->entries
->len
+ 1);
291 return &g_array_index(index
->entries
, struct ctf_fs_ds_index_entry
,
292 index
->entries
->len
- 1);
296 struct bt_clock_class
*get_field_mapped_clock_class(
297 struct bt_field
*field
)
299 struct bt_field_type
*field_type
;
300 struct bt_clock_class
*clock_class
= NULL
;
302 field_type
= bt_field_get_type(field
);
307 clock_class
= bt_field_type_integer_get_mapped_clock_class(
318 int get_packet_bounds_from_packet_context(
319 struct bt_field
*packet_context
,
320 struct bt_clock_class
**_timestamp_begin_cc
,
321 struct bt_field
**_timestamp_begin
,
322 struct bt_clock_class
**_timestamp_end_cc
,
323 struct bt_field
**_timestamp_end
)
326 struct bt_clock_class
*timestamp_begin_cc
= NULL
;
327 struct bt_clock_class
*timestamp_end_cc
= NULL
;
328 struct bt_field
*timestamp_begin
= NULL
;
329 struct bt_field
*timestamp_end
= NULL
;
331 timestamp_begin
= bt_field_structure_get_field_by_name(
332 packet_context
, "timestamp_begin");
333 if (!timestamp_begin
) {
334 BT_LOGD_STR("Cannot retrieve timestamp_begin field in packet context.");
339 timestamp_begin_cc
= get_field_mapped_clock_class(timestamp_begin
);
340 if (!timestamp_begin_cc
) {
341 BT_LOGD_STR("Cannot retrieve the clock mapped to timestamp_begin.");
344 timestamp_end
= bt_field_structure_get_field_by_name(
345 packet_context
, "timestamp_end");
346 if (!timestamp_end
) {
347 BT_LOGD_STR("Cannot retrieve timestamp_end field in packet context.");
352 timestamp_end_cc
= get_field_mapped_clock_class(timestamp_end
);
353 if (!timestamp_end_cc
) {
354 BT_LOGD_STR("Cannot retrieve the clock mapped to timestamp_end.");
357 if (_timestamp_begin_cc
) {
358 *_timestamp_begin_cc
= bt_get(timestamp_begin_cc
);
360 if (_timestamp_begin
) {
361 *_timestamp_begin
= bt_get(timestamp_begin
);
363 if (_timestamp_end_cc
) {
364 *_timestamp_end_cc
= bt_get(timestamp_end_cc
);
366 if (_timestamp_end
) {
367 *_timestamp_end
= bt_get(timestamp_end
);
370 bt_put(timestamp_begin_cc
);
371 bt_put(timestamp_end_cc
);
372 bt_put(timestamp_begin
);
373 bt_put(timestamp_end
);
378 int get_ds_file_packet_bounds_clock_classes(struct ctf_fs_ds_file
*ds_file
,
379 struct bt_clock_class
**timestamp_begin_cc
,
380 struct bt_clock_class
**timestamp_end_cc
)
382 struct bt_field
*packet_context
= NULL
;
383 int ret
= ctf_fs_ds_file_get_packet_header_context_fields(ds_file
,
384 NULL
, &packet_context
);
386 if (ret
|| !packet_context
) {
387 BT_LOGD("Cannot retrieve packet context field of stream \'%s\'",
388 ds_file
->file
->path
->str
);
393 ret
= get_packet_bounds_from_packet_context(packet_context
,
394 timestamp_begin_cc
, NULL
,
395 timestamp_end_cc
, NULL
);
397 bt_put(packet_context
);
402 int convert_cycles_to_ns(struct bt_clock_class
*clock_class
,
403 uint64_t cycles
, int64_t *ns
)
406 struct bt_clock_value
*clock_value
;
409 clock_value
= bt_clock_value_create(clock_class
, cycles
);
415 ret
= bt_clock_value_get_value_ns_from_epoch(clock_value
, ns
);
425 struct ctf_fs_ds_index
*build_index_from_idx_file(
426 struct ctf_fs_ds_file
*ds_file
)
429 gchar
*directory
= NULL
;
430 gchar
*basename
= NULL
;
431 GString
*index_basename
= NULL
;
432 gchar
*index_file_path
= NULL
;
433 GMappedFile
*mapped_file
= NULL
;
435 const char *mmap_begin
= NULL
, *file_pos
= NULL
;
436 const struct ctf_packet_index_file_hdr
*header
= NULL
;
437 struct ctf_fs_ds_index
*index
= NULL
;
438 struct ctf_fs_ds_index_entry
*index_entry
= NULL
;
439 uint64_t total_packets_size
= 0;
440 size_t file_index_entry_size
;
441 size_t file_entry_count
;
443 struct bt_clock_class
*timestamp_begin_cc
= NULL
;
444 struct bt_clock_class
*timestamp_end_cc
= NULL
;
446 BT_LOGD("Building index from .idx file of stream file %s",
447 ds_file
->file
->path
->str
);
449 ret
= get_ds_file_packet_bounds_clock_classes(ds_file
,
450 ×tamp_begin_cc
, ×tamp_end_cc
);
452 BT_LOGD_STR("Cannot get clock classes of \"timestamp_begin\" "
453 "and \"timestamp_end\" fields");
457 /* Look for index file in relative path index/name.idx. */
458 basename
= g_path_get_basename(ds_file
->file
->path
->str
);
460 BT_LOGE("Cannot get the basename of datastream file %s",
461 ds_file
->file
->path
->str
);
465 directory
= g_path_get_dirname(ds_file
->file
->path
->str
);
467 BT_LOGE("Cannot get dirname of datastream file %s",
468 ds_file
->file
->path
->str
);
472 index_basename
= g_string_new(basename
);
473 if (!index_basename
) {
474 BT_LOGE_STR("Cannot allocate index file basename string");
478 g_string_append(index_basename
, ".idx");
479 index_file_path
= g_build_filename(directory
, "index",
480 index_basename
->str
, NULL
);
481 mapped_file
= g_mapped_file_new(index_file_path
, FALSE
, NULL
);
483 BT_LOGD("Cannot create new mapped file %s",
489 * The g_mapped_file API limits us to 4GB files on 32-bit.
490 * Traces with such large indexes have never been seen in the wild,
491 * but this would need to be adjusted to support them.
493 filesize
= g_mapped_file_get_length(mapped_file
);
494 if (filesize
< sizeof(*header
)) {
495 BT_LOGW("Invalid LTTng trace index file: "
496 "file size (%zu bytes) < header size (%zu bytes)",
497 filesize
, sizeof(*header
));
501 mmap_begin
= g_mapped_file_get_contents(mapped_file
);
502 header
= (struct ctf_packet_index_file_hdr
*) mmap_begin
;
504 file_pos
= g_mapped_file_get_contents(mapped_file
) + sizeof(*header
);
505 if (be32toh(header
->magic
) != CTF_INDEX_MAGIC
) {
506 BT_LOGW_STR("Invalid LTTng trace index: \"magic\" field validation failed");
510 file_index_entry_size
= be32toh(header
->packet_index_len
);
511 file_entry_count
= (filesize
- sizeof(*header
)) / file_index_entry_size
;
512 if ((filesize
- sizeof(*header
)) % file_index_entry_size
) {
513 BT_LOGW("Invalid LTTng trace index: the index's size after the header "
514 "(%zu bytes) is not a multiple of the index entry size "
515 "(%zu bytes)", (filesize
- sizeof(*header
)),
520 index
= ctf_fs_ds_index_create(file_entry_count
);
525 index_entry
= (struct ctf_fs_ds_index_entry
*) &g_array_index(
526 index
->entries
, struct ctf_fs_ds_index_entry
, 0);
527 for (i
= 0; i
< file_entry_count
; i
++) {
528 struct ctf_packet_index
*file_index
=
529 (struct ctf_packet_index
*) file_pos
;
530 uint64_t packet_size
= be64toh(file_index
->packet_size
);
532 if (packet_size
% CHAR_BIT
) {
533 BT_LOGW("Invalid packet size encountered in LTTng trace index file");
537 /* Convert size in bits to bytes. */
538 packet_size
/= CHAR_BIT
;
539 index_entry
->packet_size
= packet_size
;
541 index_entry
->offset
= be64toh(file_index
->offset
);
542 if (i
!= 0 && index_entry
->offset
< (index_entry
- 1)->offset
) {
543 BT_LOGW("Invalid, non-monotonic, packet offset encountered in LTTng trace index file: "
544 "previous offset=%" PRIu64
", current offset=%" PRIu64
,
545 (index_entry
- 1)->offset
, index_entry
->offset
);
549 index_entry
->timestamp_begin
= be64toh(file_index
->timestamp_begin
);
550 index_entry
->timestamp_end
= be64toh(file_index
->timestamp_end
);
551 if (index_entry
->timestamp_end
< index_entry
->timestamp_begin
) {
552 BT_LOGW("Invalid packet time bounds encountered in LTTng trace index file (begin > end): "
553 "timestamp_begin=%" PRIu64
"timestamp_end=%" PRIu64
,
554 index_entry
->timestamp_begin
,
555 index_entry
->timestamp_end
);
559 /* Convert the packet's bound to nanoseconds since Epoch. */
560 ret
= convert_cycles_to_ns(timestamp_begin_cc
,
561 index_entry
->timestamp_begin
,
562 &index_entry
->timestamp_begin_ns
);
564 BT_LOGD_STR("Failed to convert raw timestamp to nanoseconds since Epoch during index parsing");
567 ret
= convert_cycles_to_ns(timestamp_end_cc
,
568 index_entry
->timestamp_end
,
569 &index_entry
->timestamp_end_ns
);
571 BT_LOGD_STR("Failed to convert raw timestamp to nanoseconds since Epoch during LTTng trace index parsing");
575 total_packets_size
+= packet_size
;
576 file_pos
+= file_index_entry_size
;
580 /* Validate that the index addresses the complete stream. */
581 if (ds_file
->file
->size
!= total_packets_size
) {
582 BT_LOGW("Invalid LTTng trace index file; indexed size != stream file size: "
583 "file-size=%" PRIu64
", total-packets-size=%" PRIu64
,
584 ds_file
->file
->size
, total_packets_size
);
590 g_free(index_file_path
);
591 if (index_basename
) {
592 g_string_free(index_basename
, TRUE
);
595 g_mapped_file_unref(mapped_file
);
597 bt_put(timestamp_begin_cc
);
598 bt_put(timestamp_end_cc
);
601 ctf_fs_ds_index_destroy(index
);
607 int init_index_entry(struct ctf_fs_ds_index_entry
*entry
,
608 struct bt_field
*packet_context
, off_t packet_size
,
612 struct bt_field
*timestamp_begin
= NULL
;
613 struct bt_field
*timestamp_end
= NULL
;
614 struct bt_clock_class
*timestamp_begin_cc
= NULL
;
615 struct bt_clock_class
*timestamp_end_cc
= NULL
;
617 ret
= get_packet_bounds_from_packet_context(packet_context
,
618 ×tamp_begin_cc
, ×tamp_begin
,
619 ×tamp_end_cc
, ×tamp_end
);
620 if (ret
|| !timestamp_begin_cc
|| !timestamp_begin
||
621 !timestamp_end_cc
|| ! timestamp_end
) {
622 BT_LOGD_STR("Failed to determine time bound fields of packet.");
626 BT_ASSERT(packet_offset
>= 0);
627 entry
->offset
= packet_offset
;
629 BT_ASSERT(packet_size
>= 0);
630 entry
->packet_size
= packet_size
;
632 ret
= bt_field_unsigned_integer_get_value(timestamp_begin
,
633 &entry
->timestamp_begin
);
637 ret
= bt_field_unsigned_integer_get_value(timestamp_end
,
638 &entry
->timestamp_end
);
643 /* Convert the packet's bound to nanoseconds since Epoch. */
644 ret
= convert_cycles_to_ns(timestamp_begin_cc
,
645 entry
->timestamp_begin
,
646 &entry
->timestamp_begin_ns
);
648 BT_LOGD_STR("Failed to convert raw timestamp to nanoseconds since Epoch.");
652 ret
= convert_cycles_to_ns(timestamp_end_cc
,
653 entry
->timestamp_end
,
654 &entry
->timestamp_end_ns
);
656 BT_LOGD_STR("Failed to convert raw timestamp to nanoseconds since Epoch.");
660 bt_put(timestamp_begin
);
661 bt_put(timestamp_begin_cc
);
662 bt_put(timestamp_end
);
663 bt_put(timestamp_end_cc
);
668 struct ctf_fs_ds_index
*build_index_from_stream_file(
669 struct ctf_fs_ds_file
*ds_file
)
672 struct ctf_fs_ds_index
*index
= NULL
;
673 enum bt_notif_iter_status iter_status
;
674 struct bt_field
*packet_context
= NULL
;
676 BT_LOGD("Indexing stream file %s", ds_file
->file
->path
->str
);
678 index
= ctf_fs_ds_index_create(0);
684 off_t current_packet_offset
;
685 off_t next_packet_offset
;
686 off_t current_packet_size
, current_packet_size_bytes
;
687 struct ctf_fs_ds_index_entry
*entry
;
689 iter_status
= bt_notif_iter_get_packet_header_context_fields(
690 ds_file
->notif_iter
, NULL
, &packet_context
);
691 if (iter_status
!= BT_NOTIF_ITER_STATUS_OK
) {
692 if (iter_status
== BT_NOTIF_ITER_STATUS_EOF
) {
697 current_packet_offset
=
698 bt_notif_iter_get_current_packet_offset(
699 ds_file
->notif_iter
);
700 if (current_packet_offset
< 0) {
701 BT_LOGE_STR("Cannot get the current packet's offset.");
705 current_packet_size
= bt_notif_iter_get_current_packet_size(
706 ds_file
->notif_iter
);
707 if (current_packet_size
< 0) {
708 BT_LOGE("Cannot get packet size: packet-offset=%jd",
709 current_packet_offset
);
712 current_packet_size_bytes
=
713 ((current_packet_size
+ 7) & ~7) / CHAR_BIT
;
715 if (current_packet_offset
+ current_packet_size_bytes
>
716 ds_file
->file
->size
) {
717 BT_LOGW("Invalid packet size reported in file: stream=\"%s\", "
718 "packet-offset=%jd, packet-size-bytes=%jd, "
720 ds_file
->file
->path
->str
,
721 current_packet_offset
,
722 current_packet_size_bytes
,
723 ds_file
->file
->size
);
727 next_packet_offset
= current_packet_offset
+
728 current_packet_size_bytes
;
729 BT_LOGD("Seeking to next packet: current-packet-offset=%jd, "
730 "next-packet-offset=%jd", current_packet_offset
,
733 entry
= ctf_fs_ds_index_add_new_entry(index
);
735 BT_LOGE_STR("Failed to allocate a new index entry.");
739 ret
= init_index_entry(entry
, packet_context
,
740 current_packet_size_bytes
,
741 current_packet_offset
);
746 iter_status
= bt_notif_iter_seek(ds_file
->notif_iter
,
748 BT_PUT(packet_context
);
749 } while (iter_status
== BT_NOTIF_ITER_STATUS_OK
);
751 if (iter_status
!= BT_NOTIF_ITER_STATUS_EOF
) {
755 bt_put(packet_context
);
758 ctf_fs_ds_index_destroy(index
);
764 struct ctf_fs_ds_file
*ctf_fs_ds_file_create(
765 struct ctf_fs_trace
*ctf_fs_trace
,
766 struct bt_notif_iter
*notif_iter
,
767 struct bt_stream
*stream
, const char *path
)
770 const size_t page_size
= bt_common_get_page_size();
771 struct ctf_fs_ds_file
*ds_file
= g_new0(struct ctf_fs_ds_file
, 1);
777 ds_file
->file
= ctf_fs_file_create();
778 if (!ds_file
->file
) {
782 ds_file
->stream
= bt_get(stream
);
783 ds_file
->cc_prio_map
= bt_get(ctf_fs_trace
->cc_prio_map
);
784 g_string_assign(ds_file
->file
->path
, path
);
785 ret
= ctf_fs_file_open(ds_file
->file
, "rb");
790 ds_file
->notif_iter
= notif_iter
;
791 bt_notif_iter_set_medops_data(ds_file
->notif_iter
, ds_file
);
792 if (!ds_file
->notif_iter
) {
796 ds_file
->mmap_max_len
= page_size
* 2048;
801 /* Do not touch "borrowed" file. */
802 ctf_fs_ds_file_destroy(ds_file
);
810 struct ctf_fs_ds_index
*ctf_fs_ds_file_build_index(
811 struct ctf_fs_ds_file
*ds_file
)
813 struct ctf_fs_ds_index
*index
;
815 index
= build_index_from_idx_file(ds_file
);
820 BT_LOGD("Failed to build index from .index file; "
821 "falling back to stream indexing.");
822 index
= build_index_from_stream_file(ds_file
);
828 void ctf_fs_ds_file_destroy(struct ctf_fs_ds_file
*ds_file
)
834 bt_put(ds_file
->cc_prio_map
);
835 bt_put(ds_file
->stream
);
836 (void) ds_file_munmap(ds_file
);
839 ctf_fs_file_destroy(ds_file
->file
);
846 struct bt_notification_iterator_next_method_return
ctf_fs_ds_file_next(
847 struct ctf_fs_ds_file
*ds_file
)
849 enum bt_notif_iter_status notif_iter_status
;
850 struct bt_notification_iterator_next_method_return ret
= {
851 .status
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
,
852 .notification
= NULL
,
855 notif_iter_status
= bt_notif_iter_get_next_notification(
856 ds_file
->notif_iter
, ds_file
->cc_prio_map
, &ret
.notification
);
858 switch (notif_iter_status
) {
859 case BT_NOTIF_ITER_STATUS_EOF
:
860 ret
.status
= BT_NOTIFICATION_ITERATOR_STATUS_END
;
862 case BT_NOTIF_ITER_STATUS_OK
:
863 ret
.status
= BT_NOTIFICATION_ITERATOR_STATUS_OK
;
865 case BT_NOTIF_ITER_STATUS_AGAIN
:
867 * Should not make it this far as this is
868 * medium-specific; there is nothing for the user to do
869 * and it should have been handled upstream.
872 case BT_NOTIF_ITER_STATUS_INVAL
:
873 case BT_NOTIF_ITER_STATUS_ERROR
:
875 ret
.status
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
883 int ctf_fs_ds_file_get_packet_header_context_fields(
884 struct ctf_fs_ds_file
*ds_file
,
885 struct bt_field
**packet_header_field
,
886 struct bt_field
**packet_context_field
)
888 enum bt_notif_iter_status notif_iter_status
;
892 notif_iter_status
= bt_notif_iter_get_packet_header_context_fields(
893 ds_file
->notif_iter
, packet_header_field
, packet_context_field
);
894 switch (notif_iter_status
) {
895 case BT_NOTIF_ITER_STATUS_EOF
:
896 case BT_NOTIF_ITER_STATUS_OK
:
898 case BT_NOTIF_ITER_STATUS_AGAIN
:
900 case BT_NOTIF_ITER_STATUS_INVAL
:
901 case BT_NOTIF_ITER_STATUS_ERROR
:
912 if (packet_header_field
) {
913 bt_put(*packet_header_field
);
916 if (packet_context_field
) {
917 bt_put(*packet_context_field
);
925 void ctf_fs_ds_index_destroy(struct ctf_fs_ds_index
*index
)
931 if (index
->entries
) {
932 g_array_free(index
->entries
, TRUE
);