2 * BabelTrace - Common Trace Format (CTF)
6 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
8 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
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
29 #include <babeltrace/format.h>
30 #include <babeltrace/ctf/types.h>
31 #include <babeltrace/ctf/metadata.h>
32 #include <babeltrace/babeltrace-internal.h>
33 #include <babeltrace/ctf/events-internal.h>
34 #include <babeltrace/trace-handle-internal.h>
35 #include <babeltrace/context-internal.h>
36 #include <babeltrace/compat/uuid.h>
37 #include <babeltrace/endian.h>
38 #include <babeltrace/ctf/ctf-index.h>
43 #include <sys/types.h>
51 #include "metadata/ctf-scanner.h"
52 #include "metadata/ctf-parser.h"
53 #include "metadata/ctf-ast.h"
54 #include "events-private.h"
55 #include <babeltrace/compat/memstream.h>
57 #define LOG2_CHAR_BIT 3
60 * Length of first attempt at mapping a packet header, in bits.
62 #define DEFAULT_HEADER_LEN (getpagesize() * CHAR_BIT)
65 * Lenght of packet to write, in bits.
67 #define WRITE_PACKET_LEN (getpagesize() * 8 * CHAR_BIT)
70 #define min(a, b) (((a) < (b)) ? (a) : (b))
73 #define NSEC_PER_SEC 1000000000ULL
75 #define INDEX_PATH "./index/%s.idx"
82 uint64_t opt_clock_offset
;
83 uint64_t opt_clock_offset_ns
;
88 * TODO: babeltrace_ctf_console_output ensures that we only print
89 * discarded events when ctf-text plugin is used. Should be cleaned up
90 * with the plugin system redesign.
92 int babeltrace_ctf_console_output
;
95 struct bt_trace_descriptor
*ctf_open_trace(const char *path
, int flags
,
96 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
100 struct bt_trace_descriptor
*ctf_open_mmap_trace(
101 struct bt_mmap_stream_list
*mmap_list
,
102 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
106 void ctf_set_context(struct bt_trace_descriptor
*descriptor
,
107 struct bt_context
*ctx
);
109 void ctf_set_handle(struct bt_trace_descriptor
*descriptor
,
110 struct bt_trace_handle
*handle
);
113 int ctf_close_trace(struct bt_trace_descriptor
*descriptor
);
115 uint64_t ctf_timestamp_begin(struct bt_trace_descriptor
*descriptor
,
116 struct bt_trace_handle
*handle
, enum bt_clock_type type
);
118 uint64_t ctf_timestamp_end(struct bt_trace_descriptor
*descriptor
,
119 struct bt_trace_handle
*handle
, enum bt_clock_type type
);
121 int ctf_convert_index_timestamp(struct bt_trace_descriptor
*tdp
);
124 rw_dispatch read_dispatch_table
[] = {
125 [ CTF_TYPE_INTEGER
] = ctf_integer_read
,
126 [ CTF_TYPE_FLOAT
] = ctf_float_read
,
127 [ CTF_TYPE_ENUM
] = ctf_enum_read
,
128 [ CTF_TYPE_STRING
] = ctf_string_read
,
129 [ CTF_TYPE_STRUCT
] = ctf_struct_rw
,
130 [ CTF_TYPE_VARIANT
] = ctf_variant_rw
,
131 [ CTF_TYPE_ARRAY
] = ctf_array_read
,
132 [ CTF_TYPE_SEQUENCE
] = ctf_sequence_read
,
136 rw_dispatch write_dispatch_table
[] = {
137 [ CTF_TYPE_INTEGER
] = ctf_integer_write
,
138 [ CTF_TYPE_FLOAT
] = ctf_float_write
,
139 [ CTF_TYPE_ENUM
] = ctf_enum_write
,
140 [ CTF_TYPE_STRING
] = ctf_string_write
,
141 [ CTF_TYPE_STRUCT
] = ctf_struct_rw
,
142 [ CTF_TYPE_VARIANT
] = ctf_variant_rw
,
143 [ CTF_TYPE_ARRAY
] = ctf_array_write
,
144 [ CTF_TYPE_SEQUENCE
] = ctf_sequence_write
,
148 struct bt_format ctf_format
= {
149 .open_trace
= ctf_open_trace
,
150 .open_mmap_trace
= ctf_open_mmap_trace
,
151 .close_trace
= ctf_close_trace
,
152 .set_context
= ctf_set_context
,
153 .set_handle
= ctf_set_handle
,
154 .timestamp_begin
= ctf_timestamp_begin
,
155 .timestamp_end
= ctf_timestamp_end
,
156 .convert_index_timestamp
= ctf_convert_index_timestamp
,
160 uint64_t ctf_timestamp_begin(struct bt_trace_descriptor
*descriptor
,
161 struct bt_trace_handle
*handle
, enum bt_clock_type type
)
163 struct ctf_trace
*tin
;
164 uint64_t begin
= ULLONG_MAX
;
167 tin
= container_of(descriptor
, struct ctf_trace
, parent
);
172 /* for each stream_class */
173 for (i
= 0; i
< tin
->streams
->len
; i
++) {
174 struct ctf_stream_declaration
*stream_class
;
176 stream_class
= g_ptr_array_index(tin
->streams
, i
);
179 /* for each file_stream */
180 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
181 struct ctf_stream_definition
*stream
;
182 struct ctf_file_stream
*cfs
;
183 struct ctf_stream_pos
*stream_pos
;
184 struct packet_index
*index
;
186 stream
= g_ptr_array_index(stream_class
->streams
, j
);
187 cfs
= container_of(stream
, struct ctf_file_stream
,
189 stream_pos
= &cfs
->pos
;
191 if (!stream_pos
->packet_index
)
194 if (stream_pos
->packet_index
->len
<= 0)
197 index
= &g_array_index(stream_pos
->packet_index
,
199 stream_pos
->packet_index
->len
- 1);
200 if (type
== BT_CLOCK_REAL
) {
201 if (index
->ts_real
.timestamp_begin
< begin
)
202 begin
= index
->ts_real
.timestamp_begin
;
203 } else if (type
== BT_CLOCK_CYCLES
) {
204 if (index
->ts_cycles
.timestamp_begin
< begin
)
205 begin
= index
->ts_cycles
.timestamp_begin
;
219 uint64_t ctf_timestamp_end(struct bt_trace_descriptor
*descriptor
,
220 struct bt_trace_handle
*handle
, enum bt_clock_type type
)
222 struct ctf_trace
*tin
;
226 tin
= container_of(descriptor
, struct ctf_trace
, parent
);
231 /* for each stream_class */
232 for (i
= 0; i
< tin
->streams
->len
; i
++) {
233 struct ctf_stream_declaration
*stream_class
;
235 stream_class
= g_ptr_array_index(tin
->streams
, i
);
238 /* for each file_stream */
239 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
240 struct ctf_stream_definition
*stream
;
241 struct ctf_file_stream
*cfs
;
242 struct ctf_stream_pos
*stream_pos
;
243 struct packet_index
*index
;
245 stream
= g_ptr_array_index(stream_class
->streams
, j
);
246 cfs
= container_of(stream
, struct ctf_file_stream
,
248 stream_pos
= &cfs
->pos
;
250 if (!stream_pos
->packet_index
)
253 if (stream_pos
->packet_index
->len
<= 0)
256 index
= &g_array_index(stream_pos
->packet_index
,
258 stream_pos
->packet_index
->len
- 1);
259 if (type
== BT_CLOCK_REAL
) {
260 if (index
->ts_real
.timestamp_end
> end
)
261 end
= index
->ts_real
.timestamp_end
;
262 } else if (type
== BT_CLOCK_CYCLES
) {
263 if (index
->ts_cycles
.timestamp_end
> end
)
264 end
= index
->ts_cycles
.timestamp_end
;
278 * Update stream current timestamp
281 void ctf_update_timestamp(struct ctf_stream_definition
*stream
,
282 struct definition_integer
*integer_definition
)
284 struct declaration_integer
*integer_declaration
=
285 integer_definition
->declaration
;
286 uint64_t oldval
, newval
, updateval
;
288 if (unlikely(integer_declaration
->len
== 64)) {
289 stream
->cycles_timestamp
= integer_definition
->value
._unsigned
;
290 stream
->real_timestamp
= ctf_get_real_timestamp(stream
,
291 stream
->cycles_timestamp
);
295 oldval
= stream
->cycles_timestamp
;
296 oldval
&= (1ULL << integer_declaration
->len
) - 1;
297 newval
= integer_definition
->value
._unsigned
;
298 /* Test for overflow by comparing low bits */
300 newval
+= 1ULL << integer_declaration
->len
;
301 /* updateval contains old high bits, and new low bits (sum) */
302 updateval
= stream
->cycles_timestamp
;
303 updateval
&= ~((1ULL << integer_declaration
->len
) - 1);
305 stream
->cycles_timestamp
= updateval
;
307 /* convert to real timestamp */
308 stream
->real_timestamp
= ctf_get_real_timestamp(stream
,
309 stream
->cycles_timestamp
);
313 * Print timestamp, rescaling clock frequency to nanoseconds and
314 * applying offsets as needed (unix time).
317 void ctf_print_timestamp_real(FILE *fp
,
318 struct ctf_stream_definition
*stream
,
321 uint64_t ts_sec
= 0, ts_nsec
;
325 /* Add command-line offset in ns*/
326 ts_nsec
+= opt_clock_offset_ns
;
328 /* Add command-line offset */
329 ts_sec
+= opt_clock_offset
;
331 ts_sec
+= ts_nsec
/ NSEC_PER_SEC
;
332 ts_nsec
= ts_nsec
% NSEC_PER_SEC
;
334 if (!opt_clock_seconds
) {
336 time_t time_s
= (time_t) ts_sec
;
338 if (!opt_clock_gmt
) {
341 res
= localtime_r(&time_s
, &tm
);
343 fprintf(stderr
, "[warning] Unable to get localtime.\n");
349 res
= gmtime_r(&time_s
, &tm
);
351 fprintf(stderr
, "[warning] Unable to get gmtime.\n");
355 if (opt_clock_date
) {
359 /* Print date and time */
360 res
= strftime(timestr
, sizeof(timestr
),
363 fprintf(stderr
, "[warning] Unable to print ascii time.\n");
366 fprintf(fp
, "%s", timestr
);
368 /* Print time in HH:MM:SS.ns */
369 fprintf(fp
, "%02d:%02d:%02d.%09" PRIu64
,
370 tm
.tm_hour
, tm
.tm_min
, tm
.tm_sec
, ts_nsec
);
374 fprintf(fp
, "%3" PRIu64
".%09" PRIu64
,
382 * Print timestamp, in cycles
385 void ctf_print_timestamp_cycles(FILE *fp
,
386 struct ctf_stream_definition
*stream
,
389 fprintf(fp
, "%020" PRIu64
, timestamp
);
392 void ctf_print_timestamp(FILE *fp
,
393 struct ctf_stream_definition
*stream
,
396 if (opt_clock_cycles
) {
397 ctf_print_timestamp_cycles(fp
, stream
, timestamp
);
399 ctf_print_timestamp_real(fp
, stream
, timestamp
);
404 void print_uuid(FILE *fp
, unsigned char *uuid
)
408 for (i
= 0; i
< BABELTRACE_UUID_LEN
; i
++)
409 fprintf(fp
, "%x", (unsigned int) uuid
[i
]);
413 * Discarded events can be either:
414 * - discarded after end of previous buffer due to buffer full:
415 * happened within range: [ prev_timestamp_end, timestamp_begin ]
416 * - discarded within current buffer due to either event too large or
417 * nested wrap-around:
418 * happened within range: [ timestamp_begin, timestamp_end ]
420 * Given we have discarded counters of those two types merged into the
421 * events_discarded counter, we need to use the union of those ranges:
422 * [ prev_timestamp_end, timestamp_end ]
425 void ctf_print_discarded(FILE *fp
, struct ctf_stream_definition
*stream
)
427 if (!stream
->events_discarded
|| !babeltrace_ctf_console_output
) {
431 fprintf(fp
, "[warning] Tracer discarded %" PRIu64
" events between [",
432 stream
->events_discarded
);
433 if (opt_clock_cycles
) {
434 ctf_print_timestamp(fp
, stream
,
435 stream
->prev
.cycles
.end
);
436 fprintf(fp
, "] and [");
437 ctf_print_timestamp(fp
, stream
,
438 stream
->current
.cycles
.end
);
440 ctf_print_timestamp(fp
, stream
,
441 stream
->prev
.real
.end
);
442 fprintf(fp
, "] and [");
443 ctf_print_timestamp(fp
, stream
,
444 stream
->current
.real
.end
);
446 fprintf(fp
, "] in trace UUID ");
447 print_uuid(fp
, stream
->stream_class
->trace
->uuid
);
448 if (stream
->stream_class
->trace
->parent
.path
[0])
449 fprintf(fp
, ", at path: \"%s\"",
450 stream
->stream_class
->trace
->parent
.path
);
452 fprintf(fp
, ", within stream id %" PRIu64
, stream
->stream_id
);
454 fprintf(fp
, ", at relative path: \"%s\"", stream
->path
);
456 fprintf(fp
, "You should consider recording a new trace with larger "
457 "buffers or with fewer events enabled.\n");
462 int ctf_read_event(struct bt_stream_pos
*ppos
, struct ctf_stream_definition
*stream
)
464 struct ctf_stream_pos
*pos
=
465 container_of(ppos
, struct ctf_stream_pos
, parent
);
466 struct ctf_stream_declaration
*stream_class
= stream
->stream_class
;
467 struct ctf_event_definition
*event
;
471 /* We need to check for EOF here for empty files. */
472 if (unlikely(pos
->offset
== EOF
))
475 ctf_pos_get_event(pos
);
477 /* save the current position as a restore point */
478 pos
->last_offset
= pos
->offset
;
481 * This is the EOF check after we've advanced the position in
484 if (unlikely(pos
->offset
== EOF
))
487 /* Stream is inactive for now (live reading). */
488 if (unlikely(pos
->content_size
== 0))
492 * Packet seeked to by ctf_pos_get_event() only contains
493 * headers, no event. Consider stream as inactive (live
496 if (unlikely(pos
->data_offset
== pos
->content_size
))
499 assert(pos
->offset
< pos
->content_size
);
501 /* Read event header */
502 if (likely(stream
->stream_event_header
)) {
503 struct definition_integer
*integer_definition
;
504 struct bt_definition
*variant
;
506 ret
= generic_rw(ppos
, &stream
->stream_event_header
->p
);
509 /* lookup event id */
510 integer_definition
= bt_lookup_integer(&stream
->stream_event_header
->p
, "id", FALSE
);
511 if (integer_definition
) {
512 id
= integer_definition
->value
._unsigned
;
514 struct definition_enum
*enum_definition
;
516 enum_definition
= bt_lookup_enum(&stream
->stream_event_header
->p
, "id", FALSE
);
517 if (enum_definition
) {
518 id
= enum_definition
->integer
->value
._unsigned
;
522 variant
= bt_lookup_variant(&stream
->stream_event_header
->p
, "v");
524 integer_definition
= bt_lookup_integer(variant
, "id", FALSE
);
525 if (integer_definition
) {
526 id
= integer_definition
->value
._unsigned
;
529 stream
->event_id
= id
;
531 /* lookup timestamp */
532 stream
->has_timestamp
= 0;
533 integer_definition
= bt_lookup_integer(&stream
->stream_event_header
->p
, "timestamp", FALSE
);
534 if (integer_definition
) {
535 ctf_update_timestamp(stream
, integer_definition
);
536 stream
->has_timestamp
= 1;
539 integer_definition
= bt_lookup_integer(variant
, "timestamp", FALSE
);
540 if (integer_definition
) {
541 ctf_update_timestamp(stream
, integer_definition
);
542 stream
->has_timestamp
= 1;
548 /* Read stream-declared event context */
549 if (stream
->stream_event_context
) {
550 ret
= generic_rw(ppos
, &stream
->stream_event_context
->p
);
555 if (unlikely(id
>= stream_class
->events_by_id
->len
)) {
556 fprintf(stderr
, "[error] Event id %" PRIu64
" is outside range.\n", id
);
559 event
= g_ptr_array_index(stream
->events_by_id
, id
);
560 if (unlikely(!event
)) {
561 fprintf(stderr
, "[error] Event id %" PRIu64
" is unknown.\n", id
);
565 /* Read event-declared event context */
566 if (event
->event_context
) {
567 ret
= generic_rw(ppos
, &event
->event_context
->p
);
572 /* Read event payload */
573 if (likely(event
->event_fields
)) {
574 ret
= generic_rw(ppos
, &event
->event_fields
->p
);
579 if (pos
->last_offset
== pos
->offset
) {
580 fprintf(stderr
, "[error] Invalid 0 byte event encountered.\n");
587 fprintf(stderr
, "[error] Unexpected end of packet. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
592 int ctf_write_event(struct bt_stream_pos
*pos
, struct ctf_stream_definition
*stream
)
594 struct ctf_stream_declaration
*stream_class
= stream
->stream_class
;
595 struct ctf_event_definition
*event
;
599 id
= stream
->event_id
;
601 /* print event header */
602 if (likely(stream
->stream_event_header
)) {
603 ret
= generic_rw(pos
, &stream
->stream_event_header
->p
);
608 /* print stream-declared event context */
609 if (stream
->stream_event_context
) {
610 ret
= generic_rw(pos
, &stream
->stream_event_context
->p
);
615 if (unlikely(id
>= stream_class
->events_by_id
->len
)) {
616 fprintf(stderr
, "[error] Event id %" PRIu64
" is outside range.\n", id
);
619 event
= g_ptr_array_index(stream
->events_by_id
, id
);
620 if (unlikely(!event
)) {
621 fprintf(stderr
, "[error] Event id %" PRIu64
" is unknown.\n", id
);
625 /* print event-declared event context */
626 if (event
->event_context
) {
627 ret
= generic_rw(pos
, &event
->event_context
->p
);
632 /* Read and print event payload */
633 if (likely(event
->event_fields
)) {
634 ret
= generic_rw(pos
, &event
->event_fields
->p
);
642 fprintf(stderr
, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
647 * One side-effect of this function is to unmap pos mmap base if one is
651 int find_data_offset(struct ctf_stream_pos
*pos
,
652 struct ctf_file_stream
*file_stream
,
653 struct packet_index
*packet_index
)
655 uint64_t packet_map_len
= DEFAULT_HEADER_LEN
, tmp_map_len
;
656 struct stat filestats
;
660 pos
= &file_stream
->pos
;
662 ret
= fstat(pos
->fd
, &filestats
);
665 filesize
= filestats
.st_size
;
667 /* Deal with empty files */
673 if (filesize
- pos
->mmap_offset
< (packet_map_len
>> LOG2_CHAR_BIT
)) {
674 packet_map_len
= (filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
;
679 ret
= munmap_align(pos
->base_mma
);
681 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
685 pos
->base_mma
= NULL
;
687 /* map new base. Need mapping length from header. */
688 pos
->base_mma
= mmap_align(packet_map_len
>> LOG2_CHAR_BIT
, PROT_READ
,
689 MAP_PRIVATE
, pos
->fd
, pos
->mmap_offset
);
690 assert(pos
->base_mma
!= MAP_FAILED
);
692 pos
->content_size
= packet_map_len
;
693 pos
->packet_size
= packet_map_len
;
694 pos
->offset
= 0; /* Position of the packet header */
696 /* update trace_packet_header and stream_packet_context */
697 if (pos
->prot
== PROT_READ
&& file_stream
->parent
.trace_packet_header
) {
698 /* Read packet header */
699 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
705 if (pos
->prot
== PROT_READ
&& file_stream
->parent
.stream_packet_context
) {
706 /* Read packet context */
707 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
713 packet_index
->data_offset
= pos
->offset
;
716 ret
= munmap_align(pos
->base_mma
);
718 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
722 pos
->base_mma
= NULL
;
726 /* Retry with larger mapping */
728 if (packet_map_len
== ((filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
)) {
730 * Reached EOF, but still expecting header/context data.
732 fprintf(stderr
, "[error] Reached end of file, but still expecting header or context fields.\n");
735 /* Double the mapping len, and retry */
736 tmp_map_len
= packet_map_len
<< 1;
737 if (tmp_map_len
>> 1 != packet_map_len
) {
739 fprintf(stderr
, "[error] Packet mapping length overflow\n");
742 packet_map_len
= tmp_map_len
;
747 int ctf_init_pos(struct ctf_stream_pos
*pos
, struct bt_trace_descriptor
*trace
,
748 int fd
, int open_flags
)
752 pos
->packet_index
= g_array_new(FALSE
, TRUE
,
753 sizeof(struct packet_index
));
755 pos
->packet_index
= NULL
;
757 switch (open_flags
& O_ACCMODE
) {
759 pos
->prot
= PROT_READ
;
760 pos
->flags
= MAP_PRIVATE
;
761 pos
->parent
.rw_table
= read_dispatch_table
;
762 pos
->parent
.event_cb
= ctf_read_event
;
763 pos
->parent
.trace
= trace
;
766 pos
->prot
= PROT_READ
| PROT_WRITE
;
767 pos
->flags
= MAP_SHARED
;
768 pos
->parent
.rw_table
= write_dispatch_table
;
769 pos
->parent
.event_cb
= ctf_write_event
;
770 pos
->parent
.trace
= trace
;
772 ctf_packet_seek(&pos
->parent
, 0, SEEK_SET
); /* position for write */
780 int ctf_fini_pos(struct ctf_stream_pos
*pos
)
782 if ((pos
->prot
& PROT_WRITE
) && pos
->content_size_loc
)
783 *pos
->content_size_loc
= pos
->offset
;
788 ret
= munmap_align(pos
->base_mma
);
790 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
795 if (pos
->packet_index
)
796 (void) g_array_free(pos
->packet_index
, TRUE
);
800 void ctf_update_current_packet_index(struct ctf_stream_definition
*stream
,
801 struct packet_index
*prev_index
,
802 struct packet_index
*cur_index
)
804 uint64_t events_discarded_diff
;
806 /* Update packet index time information */
808 /* Current packet begin/end */
809 stream
->current
.real
.begin
=
810 cur_index
->ts_real
.timestamp_begin
;
811 stream
->current
.cycles
.begin
=
812 cur_index
->ts_cycles
.timestamp_begin
;
813 stream
->current
.real
.end
=
814 cur_index
->ts_real
.timestamp_end
;
815 stream
->current
.cycles
.end
=
816 cur_index
->ts_cycles
.timestamp_end
;
818 /* Update packet index discarded event information */
819 events_discarded_diff
= cur_index
->events_discarded
;
821 /* Previous packet begin/end */
822 stream
->prev
.cycles
.begin
=
823 prev_index
->ts_cycles
.timestamp_begin
;
824 stream
->prev
.real
.begin
=
825 prev_index
->ts_real
.timestamp_begin
;
826 stream
->prev
.cycles
.end
=
827 prev_index
->ts_cycles
.timestamp_end
;
828 stream
->prev
.real
.end
=
829 prev_index
->ts_real
.timestamp_end
;
831 events_discarded_diff
-= prev_index
->events_discarded
;
833 * Deal with 32-bit wrap-around if the tracer provided a
836 if (prev_index
->events_discarded_len
== 32) {
837 events_discarded_diff
= (uint32_t) events_discarded_diff
;
841 * First packet: use current packet info as limits for
844 stream
->prev
.cycles
.begin
=
845 stream
->prev
.cycles
.end
=
846 stream
->current
.cycles
.begin
;
847 stream
->prev
.real
.begin
=
848 stream
->prev
.real
.end
=
849 stream
->current
.real
.begin
;
851 stream
->events_discarded
= events_discarded_diff
;
855 * for SEEK_CUR: go to next packet.
856 * for SEEK_SET: go to packet numer (index).
858 void ctf_packet_seek(struct bt_stream_pos
*stream_pos
, size_t index
, int whence
)
860 struct ctf_stream_pos
*pos
=
861 container_of(stream_pos
, struct ctf_stream_pos
, parent
);
862 struct ctf_file_stream
*file_stream
=
863 container_of(pos
, struct ctf_file_stream
, pos
);
866 struct packet_index
*packet_index
, *prev_index
;
870 case SEEK_SET
: /* Fall-through */
876 if ((pos
->prot
& PROT_WRITE
) && pos
->content_size_loc
)
877 *pos
->content_size_loc
= pos
->offset
;
881 ret
= munmap_align(pos
->base_mma
);
883 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
887 pos
->base_mma
= NULL
;
891 * The caller should never ask for ctf_move_pos across packets,
892 * except to get exactly at the beginning of the next packet.
894 if (pos
->prot
& PROT_WRITE
) {
897 /* The writer will add padding */
898 pos
->mmap_offset
+= pos
->packet_size
/ CHAR_BIT
;
901 assert(index
== 0); /* only seek supported for now */
907 pos
->content_size
= -1U; /* Unknown at this point */
908 pos
->packet_size
= WRITE_PACKET_LEN
;
909 off
= posix_fallocate(pos
->fd
, pos
->mmap_offset
,
910 pos
->packet_size
/ CHAR_BIT
);
918 if (pos
->offset
== EOF
) {
921 assert(pos
->cur_index
< pos
->packet_index
->len
);
922 /* The reader will expect us to skip padding */
927 if (index
>= pos
->packet_index
->len
) {
931 pos
->cur_index
= index
;
937 packet_index
= &g_array_index(pos
->packet_index
,
938 struct packet_index
, pos
->cur_index
);
939 if (pos
->cur_index
> 0) {
940 prev_index
= &g_array_index(pos
->packet_index
,
946 ctf_update_current_packet_index(&file_stream
->parent
,
947 prev_index
, packet_index
);
949 if (pos
->cur_index
>= pos
->packet_index
->len
) {
955 * We need to check if we are in trace read or called
956 * from packet indexing. In this last case, the
957 * collection is not there, so we cannot print the
960 if ((&file_stream
->parent
)->stream_class
->trace
->parent
.collection
) {
961 ctf_print_discarded(stderr
, &file_stream
->parent
);
964 packet_index
= &g_array_index(pos
->packet_index
,
967 file_stream
->parent
.cycles_timestamp
= packet_index
->ts_cycles
.timestamp_begin
;
969 file_stream
->parent
.real_timestamp
= packet_index
->ts_real
.timestamp_begin
;
971 /* Lookup context/packet size in index */
972 if (packet_index
->data_offset
== -1) {
973 ret
= find_data_offset(pos
, file_stream
, packet_index
);
978 pos
->content_size
= packet_index
->content_size
;
979 pos
->packet_size
= packet_index
->packet_size
;
980 pos
->mmap_offset
= packet_index
->offset
;
981 pos
->data_offset
= packet_index
->data_offset
;
982 if (pos
->data_offset
< packet_index
->content_size
) {
983 pos
->offset
= 0; /* will read headers */
984 } else if (pos
->data_offset
== packet_index
->content_size
) {
986 pos
->offset
= packet_index
->data_offset
;
988 goto read_next_packet
;
994 /* map new base. Need mapping length from header. */
995 pos
->base_mma
= mmap_align(pos
->packet_size
/ CHAR_BIT
, pos
->prot
,
996 pos
->flags
, pos
->fd
, pos
->mmap_offset
);
997 if (pos
->base_mma
== MAP_FAILED
) {
998 fprintf(stderr
, "[error] mmap error %s.\n",
1003 /* update trace_packet_header and stream_packet_context */
1004 if (!(pos
->prot
& PROT_WRITE
) &&
1005 file_stream
->parent
.trace_packet_header
) {
1006 /* Read packet header */
1007 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
1010 if (!(pos
->prot
& PROT_WRITE
) &&
1011 file_stream
->parent
.stream_packet_context
) {
1012 /* Read packet context */
1013 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
1019 int packet_metadata(struct ctf_trace
*td
, FILE *fp
)
1025 len
= fread(&magic
, sizeof(magic
), 1, fp
);
1029 if (magic
== TSDL_MAGIC
) {
1031 td
->byte_order
= BYTE_ORDER
;
1032 CTF_TRACE_SET_FIELD(td
, byte_order
);
1033 } else if (magic
== GUINT32_SWAP_LE_BE(TSDL_MAGIC
)) {
1035 td
->byte_order
= (BYTE_ORDER
== BIG_ENDIAN
) ?
1036 LITTLE_ENDIAN
: BIG_ENDIAN
;
1037 CTF_TRACE_SET_FIELD(td
, byte_order
);
1045 * Returns 0 on success, -1 on error.
1048 int check_version(unsigned int major
, unsigned int minor
)
1063 /* eventually return an error instead of warning */
1065 fprintf(stderr
, "[warning] Unsupported CTF specification version %u.%u. Trying anyway.\n",
1071 int ctf_trace_metadata_packet_read(struct ctf_trace
*td
, FILE *in
,
1074 struct metadata_packet_header header
;
1075 size_t readlen
, writelen
, toread
;
1076 char buf
[4096 + 1]; /* + 1 for debug-mode \0 */
1079 readlen
= fread(&header
, header_sizeof(header
), 1, in
);
1083 if (td
->byte_order
!= BYTE_ORDER
) {
1084 header
.magic
= GUINT32_SWAP_LE_BE(header
.magic
);
1085 header
.checksum
= GUINT32_SWAP_LE_BE(header
.checksum
);
1086 header
.content_size
= GUINT32_SWAP_LE_BE(header
.content_size
);
1087 header
.packet_size
= GUINT32_SWAP_LE_BE(header
.packet_size
);
1089 if (header
.checksum
)
1090 fprintf(stderr
, "[warning] checksum verification not supported yet.\n");
1091 if (header
.compression_scheme
) {
1092 fprintf(stderr
, "[error] compression (%u) not supported yet.\n",
1093 header
.compression_scheme
);
1096 if (header
.encryption_scheme
) {
1097 fprintf(stderr
, "[error] encryption (%u) not supported yet.\n",
1098 header
.encryption_scheme
);
1101 if (header
.checksum_scheme
) {
1102 fprintf(stderr
, "[error] checksum (%u) not supported yet.\n",
1103 header
.checksum_scheme
);
1106 if (check_version(header
.major
, header
.minor
) < 0)
1108 if (!CTF_TRACE_FIELD_IS_SET(td
, uuid
)) {
1109 memcpy(td
->uuid
, header
.uuid
, sizeof(header
.uuid
));
1110 CTF_TRACE_SET_FIELD(td
, uuid
);
1112 if (babeltrace_uuid_compare(header
.uuid
, td
->uuid
))
1116 if ((header
.content_size
/ CHAR_BIT
) < header_sizeof(header
))
1119 toread
= (header
.content_size
/ CHAR_BIT
) - header_sizeof(header
);
1122 readlen
= fread(buf
, sizeof(char), min(sizeof(buf
) - 1, toread
), in
);
1127 if (babeltrace_debug
) {
1128 buf
[readlen
] = '\0';
1129 fprintf(stderr
, "[debug] metadata packet read: %s\n",
1133 writelen
= fwrite(buf
, sizeof(char), readlen
, out
);
1134 if (writelen
< readlen
) {
1144 ret
= 0; /* continue reading next packet */
1151 toread
= (header
.packet_size
- header
.content_size
) / CHAR_BIT
;
1152 ret
= fseek(in
, toread
, SEEK_CUR
);
1154 fprintf(stderr
, "[warning] Missing padding at end of file\n");
1161 int ctf_trace_metadata_stream_read(struct ctf_trace
*td
, FILE **fp
,
1165 size_t size
, buflen
;
1170 * Using strlen on *buf instead of size of open_memstream
1171 * because its size includes garbage at the end (after final
1172 * \0). This is the allocated size, not the actual string size.
1174 out
= babeltrace_open_memstream(buf
, &size
);
1176 perror("Metadata open_memstream");
1180 ret
= ctf_trace_metadata_packet_read(td
, in
, out
);
1189 /* close to flush the buffer */
1190 ret
= babeltrace_close_memstream(buf
, &size
, out
);
1194 perror("babeltrace_flush_memstream");
1196 closeret
= fclose(in
);
1198 perror("Error in fclose");
1204 perror("Error in fclose");
1206 /* open for reading */
1207 buflen
= strlen(*buf
);
1212 *fp
= babeltrace_fmemopen(*buf
, buflen
, "rb");
1214 perror("Metadata fmemopen");
1221 int ctf_trace_metadata_read(struct ctf_trace
*td
, FILE *metadata_fp
,
1222 struct ctf_scanner
*scanner
, int append
)
1224 struct ctf_file_stream
*metadata_stream
;
1227 int ret
= 0, closeret
;
1229 metadata_stream
= g_new0(struct ctf_file_stream
, 1);
1230 metadata_stream
->pos
.last_offset
= LAST_OFFSET_POISON
;
1234 metadata_stream
->pos
.fd
= -1;
1236 td
->metadata
= &metadata_stream
->parent
;
1237 metadata_stream
->pos
.fd
= openat(td
->dirfd
, "metadata", O_RDONLY
);
1238 if (metadata_stream
->pos
.fd
< 0) {
1239 fprintf(stderr
, "Unable to open metadata.\n");
1244 fp
= fdopen(metadata_stream
->pos
.fd
, "r");
1246 fprintf(stderr
, "[error] Unable to open metadata stream.\n");
1247 perror("Metadata stream open");
1251 /* fd now belongs to fp */
1252 metadata_stream
->pos
.fd
= -1;
1254 if (babeltrace_debug
)
1257 if (packet_metadata(td
, fp
)) {
1258 ret
= ctf_trace_metadata_stream_read(td
, &fp
, &buf
);
1262 td
->metadata_string
= buf
;
1263 td
->metadata_packetized
= 1;
1266 unsigned int major
, minor
;
1269 td
->byte_order
= BYTE_ORDER
;
1271 /* Check text-only metadata header and version */
1272 nr_items
= fscanf(fp
, "/* CTF %10u.%10u", &major
, &minor
);
1274 fprintf(stderr
, "[warning] Ill-shapen or missing \"/* CTF x.y\" header for text-only metadata.\n");
1275 if (check_version(major
, minor
) < 0) {
1283 ret
= ctf_scanner_append_ast(scanner
, fp
);
1285 fprintf(stderr
, "[error] Error creating AST\n");
1289 if (babeltrace_debug
) {
1290 ret
= ctf_visitor_print_xml(stderr
, 0, &scanner
->ast
->root
);
1292 fprintf(stderr
, "[error] Error visiting AST for XML output\n");
1297 ret
= ctf_visitor_semantic_check(stderr
, 0, &scanner
->ast
->root
);
1299 fprintf(stderr
, "[error] Error in CTF semantic validation %d\n", ret
);
1302 ret
= ctf_visitor_construct_metadata(stderr
, 0, &scanner
->ast
->root
,
1303 td
, td
->byte_order
);
1305 fprintf(stderr
, "[error] Error in CTF metadata constructor %d\n", ret
);
1310 closeret
= fclose(fp
);
1312 perror("Error on fclose");
1316 if (metadata_stream
->pos
.fd
>= 0) {
1317 closeret
= close(metadata_stream
->pos
.fd
);
1319 perror("Error on metadata stream fd close");
1324 g_free(metadata_stream
);
1329 struct ctf_event_definition
*create_event_definitions(struct ctf_trace
*td
,
1330 struct ctf_stream_definition
*stream
,
1331 struct ctf_event_declaration
*event
)
1333 struct ctf_event_definition
*stream_event
= g_new0(struct ctf_event_definition
, 1);
1335 if (event
->context_decl
) {
1336 struct bt_definition
*definition
=
1337 event
->context_decl
->p
.definition_new(&event
->context_decl
->p
,
1338 stream
->parent_def_scope
, 0, 0, "event.context");
1342 stream_event
->event_context
= container_of(definition
,
1343 struct definition_struct
, p
);
1344 stream
->parent_def_scope
= stream_event
->event_context
->p
.scope
;
1346 if (event
->fields_decl
) {
1347 struct bt_definition
*definition
=
1348 event
->fields_decl
->p
.definition_new(&event
->fields_decl
->p
,
1349 stream
->parent_def_scope
, 0, 0, "event.fields");
1353 stream_event
->event_fields
= container_of(definition
,
1354 struct definition_struct
, p
);
1355 stream
->parent_def_scope
= stream_event
->event_fields
->p
.scope
;
1357 stream_event
->stream
= stream
;
1358 return stream_event
;
1361 if (stream_event
->event_fields
)
1362 bt_definition_unref(&stream_event
->event_fields
->p
);
1363 if (stream_event
->event_context
)
1364 bt_definition_unref(&stream_event
->event_context
->p
);
1365 fprintf(stderr
, "[error] Unable to create event definition for event \"%s\".\n",
1366 g_quark_to_string(event
->name
));
1371 int copy_event_declarations_stream_class_to_stream(struct ctf_trace
*td
,
1372 struct ctf_stream_declaration
*stream_class
,
1373 struct ctf_stream_definition
*stream
)
1375 size_t def_size
, class_size
, i
;
1378 def_size
= stream
->events_by_id
->len
;
1379 class_size
= stream_class
->events_by_id
->len
;
1381 g_ptr_array_set_size(stream
->events_by_id
, class_size
);
1382 for (i
= def_size
; i
< class_size
; i
++) {
1383 struct ctf_event_declaration
*event
=
1384 g_ptr_array_index(stream_class
->events_by_id
, i
);
1385 struct ctf_event_definition
*stream_event
;
1389 stream_event
= create_event_definitions(td
, stream
, event
);
1390 if (!stream_event
) {
1394 g_ptr_array_index(stream
->events_by_id
, i
) = stream_event
;
1401 int create_stream_definitions(struct ctf_trace
*td
, struct ctf_stream_definition
*stream
)
1403 struct ctf_stream_declaration
*stream_class
;
1407 if (stream
->stream_definitions_created
)
1410 stream_class
= stream
->stream_class
;
1412 if (stream_class
->packet_context_decl
) {
1413 struct bt_definition
*definition
=
1414 stream_class
->packet_context_decl
->p
.definition_new(&stream_class
->packet_context_decl
->p
,
1415 stream
->parent_def_scope
, 0, 0, "stream.packet.context");
1420 stream
->stream_packet_context
= container_of(definition
,
1421 struct definition_struct
, p
);
1422 stream
->parent_def_scope
= stream
->stream_packet_context
->p
.scope
;
1424 if (stream_class
->event_header_decl
) {
1425 struct bt_definition
*definition
=
1426 stream_class
->event_header_decl
->p
.definition_new(&stream_class
->event_header_decl
->p
,
1427 stream
->parent_def_scope
, 0, 0, "stream.event.header");
1432 stream
->stream_event_header
=
1433 container_of(definition
, struct definition_struct
, p
);
1434 stream
->parent_def_scope
= stream
->stream_event_header
->p
.scope
;
1436 if (stream_class
->event_context_decl
) {
1437 struct bt_definition
*definition
=
1438 stream_class
->event_context_decl
->p
.definition_new(&stream_class
->event_context_decl
->p
,
1439 stream
->parent_def_scope
, 0, 0, "stream.event.context");
1444 stream
->stream_event_context
=
1445 container_of(definition
, struct definition_struct
, p
);
1446 stream
->parent_def_scope
= stream
->stream_event_context
->p
.scope
;
1448 stream
->events_by_id
= g_ptr_array_new();
1449 ret
= copy_event_declarations_stream_class_to_stream(td
,
1450 stream_class
, stream
);
1456 for (i
= 0; i
< stream
->events_by_id
->len
; i
++) {
1457 struct ctf_event_definition
*stream_event
= g_ptr_array_index(stream
->events_by_id
, i
);
1459 g_free(stream_event
);
1461 g_ptr_array_free(stream
->events_by_id
, TRUE
);
1463 if (stream
->stream_event_context
)
1464 bt_definition_unref(&stream
->stream_event_context
->p
);
1465 if (stream
->stream_event_header
)
1466 bt_definition_unref(&stream
->stream_event_header
->p
);
1467 if (stream
->stream_packet_context
)
1468 bt_definition_unref(&stream
->stream_packet_context
->p
);
1469 fprintf(stderr
, "[error] Unable to create stream (%" PRIu64
") definitions: %s\n",
1470 stream_class
->stream_id
, strerror(-ret
));
1475 int stream_assign_class(struct ctf_trace
*td
,
1476 struct ctf_file_stream
*file_stream
,
1479 struct ctf_stream_declaration
*stream
;
1482 file_stream
->parent
.stream_id
= stream_id
;
1483 if (stream_id
>= td
->streams
->len
) {
1484 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared in metadata.\n", stream_id
);
1487 stream
= g_ptr_array_index(td
->streams
, stream_id
);
1489 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared in metadata.\n", stream_id
);
1492 file_stream
->parent
.stream_class
= stream
;
1493 ret
= create_stream_definitions(td
, &file_stream
->parent
);
1500 int create_stream_one_packet_index(struct ctf_stream_pos
*pos
,
1501 struct ctf_trace
*td
,
1502 struct ctf_file_stream
*file_stream
,
1505 struct packet_index packet_index
;
1506 uint64_t stream_id
= 0;
1507 uint64_t packet_map_len
= DEFAULT_HEADER_LEN
, tmp_map_len
;
1508 int first_packet
= 0;
1513 if (!pos
->mmap_offset
) {
1517 if (filesize
- pos
->mmap_offset
< (packet_map_len
>> LOG2_CHAR_BIT
)) {
1518 packet_map_len
= (filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
;
1521 if (pos
->base_mma
) {
1522 /* unmap old base */
1523 ret
= munmap_align(pos
->base_mma
);
1525 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
1529 pos
->base_mma
= NULL
;
1531 /* map new base. Need mapping length from header. */
1532 pos
->base_mma
= mmap_align(packet_map_len
>> LOG2_CHAR_BIT
, PROT_READ
,
1533 MAP_PRIVATE
, pos
->fd
, pos
->mmap_offset
);
1534 assert(pos
->base_mma
!= MAP_FAILED
);
1536 * Use current mapping size as temporary content and packet
1539 pos
->content_size
= packet_map_len
;
1540 pos
->packet_size
= packet_map_len
;
1541 pos
->offset
= 0; /* Position of the packet header */
1543 packet_index
.offset
= pos
->mmap_offset
;
1544 packet_index
.content_size
= 0;
1545 packet_index
.packet_size
= 0;
1546 packet_index
.ts_real
.timestamp_begin
= 0;
1547 packet_index
.ts_real
.timestamp_end
= 0;
1548 packet_index
.ts_cycles
.timestamp_begin
= 0;
1549 packet_index
.ts_cycles
.timestamp_end
= 0;
1550 packet_index
.events_discarded
= 0;
1551 packet_index
.events_discarded_len
= 0;
1553 /* read and check header, set stream id (and check) */
1554 if (file_stream
->parent
.trace_packet_header
) {
1555 /* Read packet header */
1556 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
1560 fprintf(stderr
, "[error] Unable to read packet header: %s\n", strerror(-ret
));
1563 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("magic"));
1564 if (len_index
>= 0) {
1565 struct bt_definition
*field
;
1568 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1569 magic
= bt_get_unsigned_int(field
);
1570 if (magic
!= CTF_MAGIC
) {
1571 fprintf(stderr
, "[error] Invalid magic number 0x%" PRIX64
" at packet %u (file offset %zd).\n",
1573 file_stream
->pos
.packet_index
->len
,
1574 (ssize_t
) pos
->mmap_offset
);
1580 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("uuid"));
1581 if (len_index
>= 0) {
1582 struct definition_array
*defarray
;
1583 struct bt_definition
*field
;
1585 uint8_t uuidval
[BABELTRACE_UUID_LEN
];
1587 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1588 assert(field
->declaration
->id
== CTF_TYPE_ARRAY
);
1589 defarray
= container_of(field
, struct definition_array
, p
);
1590 assert(bt_array_len(defarray
) == BABELTRACE_UUID_LEN
);
1592 for (i
= 0; i
< BABELTRACE_UUID_LEN
; i
++) {
1593 struct bt_definition
*elem
;
1595 elem
= bt_array_index(defarray
, i
);
1596 uuidval
[i
] = bt_get_unsigned_int(elem
);
1598 ret
= babeltrace_uuid_compare(td
->uuid
, uuidval
);
1600 fprintf(stderr
, "[error] Unique Universal Identifiers do not match.\n");
1605 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("stream_id"));
1606 if (len_index
>= 0) {
1607 struct bt_definition
*field
;
1609 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1610 stream_id
= bt_get_unsigned_int(field
);
1614 if (!first_packet
&& file_stream
->parent
.stream_id
!= stream_id
) {
1615 fprintf(stderr
, "[error] Stream ID is changing within a stream: expecting %" PRIu64
", but packet has %" PRIu64
"\n",
1617 file_stream
->parent
.stream_id
);
1621 ret
= stream_assign_class(td
, file_stream
, stream_id
);
1626 if (file_stream
->parent
.stream_packet_context
) {
1627 /* Read packet context */
1628 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
1632 fprintf(stderr
, "[error] Unable to read packet context: %s\n", strerror(-ret
));
1635 /* read packet size from header */
1636 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("packet_size"));
1637 if (len_index
>= 0) {
1638 struct bt_definition
*field
;
1640 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1641 packet_index
.packet_size
= bt_get_unsigned_int(field
);
1643 /* Use file size for packet size */
1644 packet_index
.packet_size
= filesize
* CHAR_BIT
;
1647 /* read content size from header */
1648 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("content_size"));
1649 if (len_index
>= 0) {
1650 struct bt_definition
*field
;
1652 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1653 packet_index
.content_size
= bt_get_unsigned_int(field
);
1655 /* Use packet size if non-zero, else file size */
1656 packet_index
.content_size
= packet_index
.packet_size
? : filesize
* CHAR_BIT
;
1659 /* read timestamp begin from header */
1660 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("timestamp_begin"));
1661 if (len_index
>= 0) {
1662 struct bt_definition
*field
;
1664 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1665 packet_index
.ts_cycles
.timestamp_begin
= bt_get_unsigned_int(field
);
1666 if (file_stream
->parent
.stream_class
->trace
->parent
.collection
) {
1667 packet_index
.ts_real
.timestamp_begin
=
1668 ctf_get_real_timestamp(
1669 &file_stream
->parent
,
1670 packet_index
.ts_cycles
.timestamp_begin
);
1674 /* read timestamp end from header */
1675 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("timestamp_end"));
1676 if (len_index
>= 0) {
1677 struct bt_definition
*field
;
1679 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1680 packet_index
.ts_cycles
.timestamp_end
= bt_get_unsigned_int(field
);
1681 if (file_stream
->parent
.stream_class
->trace
->parent
.collection
) {
1682 packet_index
.ts_real
.timestamp_end
=
1683 ctf_get_real_timestamp(
1684 &file_stream
->parent
,
1685 packet_index
.ts_cycles
.timestamp_end
);
1689 /* read events discarded from header */
1690 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("events_discarded"));
1691 if (len_index
>= 0) {
1692 struct bt_definition
*field
;
1694 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1695 packet_index
.events_discarded
= bt_get_unsigned_int(field
);
1696 packet_index
.events_discarded_len
= bt_get_int_len(field
);
1699 /* Use file size for packet size */
1700 packet_index
.packet_size
= filesize
* CHAR_BIT
;
1701 /* Use packet size if non-zero, else file size */
1702 packet_index
.content_size
= packet_index
.packet_size
? : filesize
* CHAR_BIT
;
1705 /* Validate content size and packet size values */
1706 if (packet_index
.content_size
> packet_index
.packet_size
) {
1707 fprintf(stderr
, "[error] Content size (%" PRIu64
" bits) is larger than packet size (%" PRIu64
" bits).\n",
1708 packet_index
.content_size
, packet_index
.packet_size
);
1712 if (packet_index
.packet_size
> ((uint64_t) filesize
- packet_index
.offset
) * CHAR_BIT
) {
1713 fprintf(stderr
, "[error] Packet size (%" PRIu64
" bits) is larger than remaining file size (%" PRIu64
" bits).\n",
1714 packet_index
.packet_size
, ((uint64_t) filesize
- packet_index
.offset
) * CHAR_BIT
);
1718 if (packet_index
.content_size
< pos
->offset
) {
1719 fprintf(stderr
, "[error] Invalid CTF stream: content size is smaller than packet headers.\n");
1723 if ((packet_index
.packet_size
>> LOG2_CHAR_BIT
) == 0) {
1724 fprintf(stderr
, "[error] Invalid CTF stream: packet size needs to be at least one byte\n");
1728 /* Save position after header and context */
1729 packet_index
.data_offset
= pos
->offset
;
1731 /* add index to packet array */
1732 g_array_append_val(file_stream
->pos
.packet_index
, packet_index
);
1734 pos
->mmap_offset
+= packet_index
.packet_size
>> LOG2_CHAR_BIT
;
1738 /* Retry with larger mapping */
1740 if (packet_map_len
== ((filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
)) {
1742 * Reached EOF, but still expecting header/context data.
1744 fprintf(stderr
, "[error] Reached end of file, but still expecting header or context fields.\n");
1747 /* Double the mapping len, and retry */
1748 tmp_map_len
= packet_map_len
<< 1;
1749 if (tmp_map_len
>> 1 != packet_map_len
) {
1751 fprintf(stderr
, "[error] Packet mapping length overflow\n");
1754 packet_map_len
= tmp_map_len
;
1759 int create_stream_packet_index(struct ctf_trace
*td
,
1760 struct ctf_file_stream
*file_stream
)
1762 struct ctf_stream_pos
*pos
;
1763 struct stat filestats
;
1766 pos
= &file_stream
->pos
;
1768 ret
= fstat(pos
->fd
, &filestats
);
1772 /* Deal with empty files */
1773 if (!filestats
.st_size
) {
1774 if (file_stream
->parent
.trace_packet_header
1775 || file_stream
->parent
.stream_packet_context
) {
1777 * We expect a trace packet header and/or stream packet
1778 * context. Since a trace needs to have at least one
1779 * packet, empty files are therefore not accepted.
1781 fprintf(stderr
, "[error] Encountered an empty file, but expecting a trace packet header.\n");
1785 * Without trace packet header nor stream packet
1786 * context, a one-packet trace can indeed be empty. This
1787 * is only valid if there is only one stream class: 0.
1789 ret
= stream_assign_class(td
, file_stream
, 0);
1796 for (pos
->mmap_offset
= 0; pos
->mmap_offset
< filestats
.st_size
; ) {
1797 ret
= create_stream_one_packet_index(pos
, td
, file_stream
,
1806 int create_trace_definitions(struct ctf_trace
*td
, struct ctf_stream_definition
*stream
)
1810 if (td
->packet_header_decl
) {
1811 struct bt_definition
*definition
=
1812 td
->packet_header_decl
->p
.definition_new(&td
->packet_header_decl
->p
,
1813 stream
->parent_def_scope
, 0, 0, "trace.packet.header");
1818 stream
->trace_packet_header
=
1819 container_of(definition
, struct definition_struct
, p
);
1820 stream
->parent_def_scope
= stream
->trace_packet_header
->p
.scope
;
1826 fprintf(stderr
, "[error] Unable to create trace definitions: %s\n", strerror(-ret
));
1831 int import_stream_packet_index(struct ctf_trace
*td
,
1832 struct ctf_file_stream
*file_stream
)
1834 struct ctf_stream_pos
*pos
;
1835 struct ctf_packet_index
*ctf_index
= NULL
;
1836 struct ctf_packet_index_file_hdr index_hdr
;
1837 struct packet_index index
;
1838 uint32_t packet_index_len
;
1840 int first_packet
= 1;
1843 pos
= &file_stream
->pos
;
1845 len
= fread(&index_hdr
, sizeof(index_hdr
), 1, pos
->index_fp
);
1847 perror("read index file header");
1851 /* Check the index header */
1852 if (be32toh(index_hdr
.magic
) != CTF_INDEX_MAGIC
) {
1853 fprintf(stderr
, "[error] wrong index magic\n");
1857 if (be32toh(index_hdr
.index_major
) != CTF_INDEX_MAJOR
) {
1858 fprintf(stderr
, "[error] Incompatible index file %" PRIu64
1859 ".%" PRIu64
", supported %d.%d\n",
1860 be64toh(index_hdr
.index_major
),
1861 be64toh(index_hdr
.index_minor
), CTF_INDEX_MAJOR
,
1866 packet_index_len
= be32toh(index_hdr
.packet_index_len
);
1867 if (packet_index_len
== 0) {
1868 fprintf(stderr
, "[error] Packet index length cannot be 0.\n");
1873 * Allocate the index length found in header, not internal
1876 ctf_index
= g_malloc0(packet_index_len
);
1877 while (fread(ctf_index
, packet_index_len
, 1,
1878 pos
->index_fp
) == 1) {
1880 struct ctf_stream_declaration
*stream
= NULL
;
1882 memset(&index
, 0, sizeof(index
));
1883 index
.offset
= be64toh(ctf_index
->offset
);
1884 index
.packet_size
= be64toh(ctf_index
->packet_size
);
1885 index
.content_size
= be64toh(ctf_index
->content_size
);
1886 index
.ts_cycles
.timestamp_begin
= be64toh(ctf_index
->timestamp_begin
);
1887 index
.ts_cycles
.timestamp_end
= be64toh(ctf_index
->timestamp_end
);
1888 index
.events_discarded
= be64toh(ctf_index
->events_discarded
);
1889 index
.events_discarded_len
= 64;
1890 index
.data_offset
= -1;
1891 stream_id
= be64toh(ctf_index
->stream_id
);
1893 if (!first_packet
) {
1894 /* add index to packet array */
1895 g_array_append_val(file_stream
->pos
.packet_index
, index
);
1899 file_stream
->parent
.stream_id
= stream_id
;
1900 if (stream_id
< td
->streams
->len
) {
1901 stream
= g_ptr_array_index(td
->streams
, stream_id
);
1904 fprintf(stderr
, "[error] Stream %" PRIu64
1905 " is not declared in metadata.\n",
1910 file_stream
->parent
.stream_class
= stream
;
1911 ret
= create_stream_definitions(td
, &file_stream
->parent
);
1915 /* add index to packet array */
1916 g_array_append_val(file_stream
->pos
.packet_index
, index
);
1919 /* Index containing only the header. */
1920 if (!file_stream
->parent
.stream_class
) {
1933 * Note: many file streams can inherit from the same stream class
1934 * description (metadata).
1937 int ctf_open_file_stream_read(struct ctf_trace
*td
, const char *path
, int flags
,
1938 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
1941 int ret
, fd
, closeret
;
1942 struct ctf_file_stream
*file_stream
;
1943 struct stat statbuf
;
1946 fd
= openat(td
->dirfd
, path
, flags
);
1948 perror("File stream openat()");
1953 /* Don't try to mmap subdirectories. Skip them, return success. */
1954 ret
= fstat(fd
, &statbuf
);
1956 perror("File stream fstat()");
1959 if (S_ISDIR(statbuf
.st_mode
)) {
1960 if (strncmp(path
, "index", 5) != 0) {
1961 fprintf(stderr
, "[warning] Skipping directory '%s' "
1962 "found in trace\n", path
);
1968 file_stream
= g_new0(struct ctf_file_stream
, 1);
1969 file_stream
->pos
.last_offset
= LAST_OFFSET_POISON
;
1970 file_stream
->pos
.fd
= -1;
1971 file_stream
->pos
.index_fp
= NULL
;
1973 strncpy(file_stream
->parent
.path
, path
, PATH_MAX
);
1974 file_stream
->parent
.path
[PATH_MAX
- 1] = '\0';
1977 file_stream
->pos
.packet_seek
= packet_seek
;
1979 fprintf(stderr
, "[error] packet_seek function undefined.\n");
1984 ret
= ctf_init_pos(&file_stream
->pos
, &td
->parent
, fd
, flags
);
1987 ret
= create_trace_definitions(td
, &file_stream
->parent
);
1991 * For now, only a single clock per trace is supported.
1993 file_stream
->parent
.current_clock
= td
->parent
.single_clock
;
1996 * Allocate the index name for this stream and try to open it.
1998 index_name
= malloc((strlen(path
) + sizeof(INDEX_PATH
)) * sizeof(char));
2000 fprintf(stderr
, "[error] Cannot allocate index filename\n");
2003 snprintf(index_name
, strlen(path
) + sizeof(INDEX_PATH
),
2006 if (faccessat(td
->dirfd
, index_name
, O_RDONLY
, flags
) < 0) {
2007 ret
= create_stream_packet_index(td
, file_stream
);
2009 fprintf(stderr
, "[error] Stream index creation error.\n");
2013 ret
= openat(td
->dirfd
, index_name
, flags
);
2015 perror("Index file openat()");
2019 file_stream
->pos
.index_fp
= fdopen(ret
, "r");
2020 if (!file_stream
->pos
.index_fp
) {
2021 perror("fdopen() error");
2024 ret
= import_stream_packet_index(td
, file_stream
);
2029 ret
= fclose(file_stream
->pos
.index_fp
);
2031 perror("close index");
2037 /* Add stream file to stream class */
2038 g_ptr_array_add(file_stream
->parent
.stream_class
->streams
,
2039 &file_stream
->parent
);
2043 if (file_stream
->pos
.index_fp
) {
2044 ret
= fclose(file_stream
->pos
.index_fp
);
2046 perror("close index");
2049 if (file_stream
->parent
.trace_packet_header
)
2050 bt_definition_unref(&file_stream
->parent
.trace_packet_header
->p
);
2054 closeret
= ctf_fini_pos(&file_stream
->pos
);
2056 fprintf(stderr
, "Error on ctf_fini_pos\n");
2058 g_free(file_stream
);
2061 closeret
= close(fd
);
2063 perror("Error on fd close");
2070 int ctf_open_trace_read(struct ctf_trace
*td
,
2071 const char *path
, int flags
,
2072 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2073 int whence
), FILE *metadata_fp
)
2075 struct ctf_scanner
*scanner
;
2077 struct dirent
*dirent
;
2078 struct dirent
*diriter
;
2084 /* Open trace directory */
2085 td
->dir
= opendir(path
);
2087 fprintf(stderr
, "[error] Unable to open trace directory \"%s\".\n", path
);
2092 td
->dirfd
= open(path
, 0);
2093 if (td
->dirfd
< 0) {
2094 fprintf(stderr
, "[error] Unable to open trace directory file descriptor for path \"%s\".\n", path
);
2095 perror("Trace directory open");
2099 strncpy(td
->parent
.path
, path
, sizeof(td
->parent
.path
));
2100 td
->parent
.path
[sizeof(td
->parent
.path
) - 1] = '\0';
2103 * Keep the metadata file separate.
2104 * Keep scanner object local to the open. We don't support
2105 * incremental metadata append for on-disk traces.
2107 scanner
= ctf_scanner_alloc();
2109 fprintf(stderr
, "[error] Error allocating scanner\n");
2111 goto error_metadata
;
2113 ret
= ctf_trace_metadata_read(td
, metadata_fp
, scanner
, 0);
2114 ctf_scanner_free(scanner
);
2116 if (ret
== -ENOENT
) {
2117 fprintf(stderr
, "[warning] Empty metadata.\n");
2119 fprintf(stderr
, "[warning] Unable to open trace metadata for path \"%s\".\n", path
);
2120 goto error_metadata
;
2124 * Open each stream: for each file, try to open, check magic
2125 * number, and get the stream ID to add to the right location in
2129 dirent_len
= offsetof(struct dirent
, d_name
) +
2130 fpathconf(td
->dirfd
, _PC_NAME_MAX
) + 1;
2132 dirent
= malloc(dirent_len
);
2135 ret
= readdir_r(td
->dir
, dirent
, &diriter
);
2137 fprintf(stderr
, "[error] Readdir error.\n");
2142 /* Ignore hidden files, ., .. and metadata. */
2143 if (!strncmp(diriter
->d_name
, ".", 1)
2144 || !strcmp(diriter
->d_name
, "..")
2145 || !strcmp(diriter
->d_name
, "metadata"))
2148 /* Ignore index files : *.idx */
2149 ext
= strrchr(diriter
->d_name
, '.');
2150 if (ext
&& (!strcmp(ext
, ".idx"))) {
2154 ret
= ctf_open_file_stream_read(td
, diriter
->d_name
,
2155 flags
, packet_seek
);
2157 fprintf(stderr
, "[error] Open file stream error.\n");
2168 closeret
= close(td
->dirfd
);
2170 perror("Error on fd close");
2173 closeret
= closedir(td
->dir
);
2175 perror("Error on closedir");
2182 * ctf_open_trace: Open a CTF trace and index it.
2183 * Note that the user must seek the trace after the open (using the iterator)
2184 * since the index creation read it entirely.
2187 struct bt_trace_descriptor
*ctf_open_trace(const char *path
, int flags
,
2188 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2189 int whence
), FILE *metadata_fp
)
2191 struct ctf_trace
*td
;
2195 * If packet_seek is NULL, we provide our default version.
2198 packet_seek
= ctf_packet_seek
;
2200 td
= g_new0(struct ctf_trace
, 1);
2202 switch (flags
& O_ACCMODE
) {
2205 fprintf(stderr
, "[error] Path missing for input CTF trace.\n");
2208 ret
= ctf_open_trace_read(td
, path
, flags
, packet_seek
, metadata_fp
);
2213 fprintf(stderr
, "[error] Opening CTF traces for output is not supported yet.\n");
2216 fprintf(stderr
, "[error] Incorrect open flags.\n");
2227 void ctf_init_mmap_pos(struct ctf_stream_pos
*pos
,
2228 struct bt_mmap_stream
*mmap_info
)
2230 pos
->mmap_offset
= 0;
2231 pos
->packet_size
= 0;
2232 pos
->content_size
= 0;
2233 pos
->content_size_loc
= NULL
;
2234 pos
->fd
= mmap_info
->fd
;
2235 pos
->base_mma
= NULL
;
2239 pos
->prot
= PROT_READ
;
2240 pos
->flags
= MAP_PRIVATE
;
2241 pos
->parent
.rw_table
= read_dispatch_table
;
2242 pos
->parent
.event_cb
= ctf_read_event
;
2243 pos
->priv
= mmap_info
->priv
;
2244 pos
->packet_index
= g_array_new(FALSE
, TRUE
,
2245 sizeof(struct packet_index
));
2249 int prepare_mmap_stream_definition(struct ctf_trace
*td
,
2250 struct ctf_file_stream
*file_stream
,
2251 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2254 struct ctf_stream_declaration
*stream
;
2258 /* Ask for the first packet to get the stream_id. */
2259 packet_seek(&file_stream
->pos
.parent
, 0, SEEK_SET
);
2260 stream_id
= file_stream
->parent
.stream_id
;
2261 if (stream_id
>= td
->streams
->len
) {
2262 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared "
2263 "in metadata.\n", stream_id
);
2267 stream
= g_ptr_array_index(td
->streams
, stream_id
);
2269 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared "
2270 "in metadata.\n", stream_id
);
2274 file_stream
->parent
.stream_class
= stream
;
2275 ret
= create_stream_definitions(td
, &file_stream
->parent
);
2281 int ctf_open_mmap_stream_read(struct ctf_trace
*td
,
2282 struct bt_mmap_stream
*mmap_info
,
2283 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2287 struct ctf_file_stream
*file_stream
;
2289 file_stream
= g_new0(struct ctf_file_stream
, 1);
2290 file_stream
->parent
.stream_id
= -1ULL;
2291 file_stream
->pos
.last_offset
= LAST_OFFSET_POISON
;
2292 ctf_init_mmap_pos(&file_stream
->pos
, mmap_info
);
2294 file_stream
->pos
.packet_seek
= packet_seek
;
2296 ret
= create_trace_definitions(td
, &file_stream
->parent
);
2301 ret
= prepare_mmap_stream_definition(td
, file_stream
, packet_seek
);
2306 * For now, only a single clock per trace is supported.
2308 file_stream
->parent
.current_clock
= td
->parent
.single_clock
;
2310 /* Add stream file to stream class */
2311 g_ptr_array_add(file_stream
->parent
.stream_class
->streams
,
2312 &file_stream
->parent
);
2316 if (file_stream
->parent
.trace_packet_header
)
2317 bt_definition_unref(&file_stream
->parent
.trace_packet_header
->p
);
2319 g_free(file_stream
);
2324 int ctf_open_mmap_trace_read(struct ctf_trace
*td
,
2325 struct bt_mmap_stream_list
*mmap_list
,
2326 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2331 struct bt_mmap_stream
*mmap_info
;
2333 td
->scanner
= ctf_scanner_alloc();
2335 fprintf(stderr
, "[error] Error allocating scanner\n");
2339 ret
= ctf_trace_metadata_read(td
, metadata_fp
, td
->scanner
, 0);
2341 if (ret
== -ENOENT
) {
2342 fprintf(stderr
, "[warning] Empty metadata.\n");
2348 * for each stream, try to open, check magic number, and get the
2349 * stream ID to add to the right location in the stream array.
2351 bt_list_for_each_entry(mmap_info
, &mmap_list
->head
, list
) {
2352 ret
= ctf_open_mmap_stream_read(td
, mmap_info
, packet_seek
);
2354 fprintf(stderr
, "[error] Open file mmap stream error.\n");
2361 ctf_scanner_free(td
->scanner
);
2366 struct bt_trace_descriptor
*ctf_open_mmap_trace(
2367 struct bt_mmap_stream_list
*mmap_list
,
2368 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2372 struct ctf_trace
*td
;
2376 fprintf(stderr
, "[error] No metadata file pointer associated, "
2377 "required for mmap parsing\n");
2381 fprintf(stderr
, "[error] packet_seek function undefined.\n");
2384 td
= g_new0(struct ctf_trace
, 1);
2386 ret
= ctf_open_mmap_trace_read(td
, mmap_list
, packet_seek
, metadata_fp
);
2398 int ctf_append_trace_metadata(struct bt_trace_descriptor
*tdp
,
2401 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
2407 ret
= ctf_trace_metadata_read(td
, metadata_fp
, td
->scanner
, 1);
2410 /* for each stream_class */
2411 for (i
= 0; i
< td
->streams
->len
; i
++) {
2412 struct ctf_stream_declaration
*stream_class
;
2414 stream_class
= g_ptr_array_index(td
->streams
, i
);
2417 /* for each stream */
2418 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
2419 struct ctf_stream_definition
*stream
;
2421 stream
= g_ptr_array_index(stream_class
->streams
, j
);
2424 ret
= copy_event_declarations_stream_class_to_stream(td
,
2425 stream_class
, stream
);
2434 int ctf_convert_index_timestamp(struct bt_trace_descriptor
*tdp
)
2437 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
2439 /* for each stream_class */
2440 for (i
= 0; i
< td
->streams
->len
; i
++) {
2441 struct ctf_stream_declaration
*stream_class
;
2443 stream_class
= g_ptr_array_index(td
->streams
, i
);
2446 /* for each file_stream */
2447 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
2448 struct ctf_stream_definition
*stream
;
2449 struct ctf_stream_pos
*stream_pos
;
2450 struct ctf_file_stream
*cfs
;
2452 stream
= g_ptr_array_index(stream_class
->streams
, j
);
2455 cfs
= container_of(stream
, struct ctf_file_stream
,
2457 stream_pos
= &cfs
->pos
;
2458 if (!stream_pos
->packet_index
)
2461 for (k
= 0; k
< stream_pos
->packet_index
->len
; k
++) {
2462 struct packet_index
*index
;
2464 index
= &g_array_index(stream_pos
->packet_index
,
2465 struct packet_index
, k
);
2466 index
->ts_real
.timestamp_begin
=
2467 ctf_get_real_timestamp(stream
,
2468 index
->ts_cycles
.timestamp_begin
);
2469 index
->ts_real
.timestamp_end
=
2470 ctf_get_real_timestamp(stream
,
2471 index
->ts_cycles
.timestamp_end
);
2479 int ctf_close_file_stream(struct ctf_file_stream
*file_stream
)
2483 ret
= ctf_fini_pos(&file_stream
->pos
);
2485 fprintf(stderr
, "Error on ctf_fini_pos\n");
2488 if (file_stream
->pos
.fd
>= 0) {
2489 ret
= close(file_stream
->pos
.fd
);
2491 perror("Error closing file fd");
2499 int ctf_close_trace(struct bt_trace_descriptor
*tdp
)
2501 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
2507 for (i
= 0; i
< td
->streams
->len
; i
++) {
2508 struct ctf_stream_declaration
*stream
;
2511 stream
= g_ptr_array_index(td
->streams
, i
);
2514 for (j
= 0; j
< stream
->streams
->len
; j
++) {
2515 struct ctf_file_stream
*file_stream
;
2516 file_stream
= container_of(g_ptr_array_index(stream
->streams
, j
),
2517 struct ctf_file_stream
, parent
);
2518 ret
= ctf_close_file_stream(file_stream
);
2524 ctf_destroy_metadata(td
);
2525 ctf_scanner_free(td
->scanner
);
2526 if (td
->dirfd
>= 0) {
2527 ret
= close(td
->dirfd
);
2529 perror("Error closing dirfd");
2534 ret
= closedir(td
->dir
);
2536 perror("Error closedir");
2540 free(td
->metadata_string
);
2546 void ctf_set_context(struct bt_trace_descriptor
*descriptor
,
2547 struct bt_context
*ctx
)
2549 struct ctf_trace
*td
= container_of(descriptor
, struct ctf_trace
,
2552 td
->parent
.ctx
= ctx
;
2556 void ctf_set_handle(struct bt_trace_descriptor
*descriptor
,
2557 struct bt_trace_handle
*handle
)
2559 struct ctf_trace
*td
= container_of(descriptor
, struct ctf_trace
,
2562 td
->parent
.handle
= handle
;
2566 void __attribute__((constructor
)) ctf_init(void)
2570 ctf_format
.name
= g_quark_from_static_string("ctf");
2571 ret
= bt_register_format(&ctf_format
);
2576 void __attribute__((destructor
)) ctf_exit(void)
2578 bt_unregister_format(&ctf_format
);