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
;
778 int ctf_fini_pos(struct ctf_stream_pos
*pos
)
780 if ((pos
->prot
& PROT_WRITE
) && pos
->content_size_loc
)
781 *pos
->content_size_loc
= pos
->offset
;
786 ret
= munmap_align(pos
->base_mma
);
788 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
793 if (pos
->packet_index
)
794 (void) g_array_free(pos
->packet_index
, TRUE
);
798 void ctf_update_current_packet_index(struct ctf_stream_definition
*stream
,
799 struct packet_index
*prev_index
,
800 struct packet_index
*cur_index
)
802 uint64_t events_discarded_diff
;
804 /* Update packet index time information */
806 /* Current packet begin/end */
807 stream
->current
.real
.begin
=
808 cur_index
->ts_real
.timestamp_begin
;
809 stream
->current
.cycles
.begin
=
810 cur_index
->ts_cycles
.timestamp_begin
;
811 stream
->current
.real
.end
=
812 cur_index
->ts_real
.timestamp_end
;
813 stream
->current
.cycles
.end
=
814 cur_index
->ts_cycles
.timestamp_end
;
816 /* Update packet index discarded event information */
817 events_discarded_diff
= cur_index
->events_discarded
;
819 /* Previous packet begin/end */
820 stream
->prev
.cycles
.begin
=
821 prev_index
->ts_cycles
.timestamp_begin
;
822 stream
->prev
.real
.begin
=
823 prev_index
->ts_real
.timestamp_begin
;
824 stream
->prev
.cycles
.end
=
825 prev_index
->ts_cycles
.timestamp_end
;
826 stream
->prev
.real
.end
=
827 prev_index
->ts_real
.timestamp_end
;
829 events_discarded_diff
-= prev_index
->events_discarded
;
831 * Deal with 32-bit wrap-around if the tracer provided a
834 if (prev_index
->events_discarded_len
== 32) {
835 events_discarded_diff
= (uint32_t) events_discarded_diff
;
839 * First packet: use current packet info as limits for
842 stream
->prev
.cycles
.begin
=
843 stream
->prev
.cycles
.end
=
844 stream
->current
.cycles
.begin
;
845 stream
->prev
.real
.begin
=
846 stream
->prev
.real
.end
=
847 stream
->current
.real
.begin
;
849 stream
->events_discarded
= events_discarded_diff
;
853 * for SEEK_CUR: go to next packet.
854 * for SEEK_SET: go to packet numer (index).
856 void ctf_packet_seek(struct bt_stream_pos
*stream_pos
, size_t index
, int whence
)
858 struct ctf_stream_pos
*pos
=
859 container_of(stream_pos
, struct ctf_stream_pos
, parent
);
860 struct ctf_file_stream
*file_stream
=
861 container_of(pos
, struct ctf_file_stream
, pos
);
864 struct packet_index
*packet_index
, *prev_index
;
868 case SEEK_SET
: /* Fall-through */
874 if ((pos
->prot
& PROT_WRITE
) && pos
->content_size_loc
)
875 *pos
->content_size_loc
= pos
->offset
;
879 ret
= munmap_align(pos
->base_mma
);
881 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
885 pos
->base_mma
= NULL
;
889 * The caller should never ask for ctf_move_pos across packets,
890 * except to get exactly at the beginning of the next packet.
892 if (pos
->prot
& PROT_WRITE
) {
895 /* The writer will add padding */
896 pos
->mmap_offset
+= pos
->packet_size
/ CHAR_BIT
;
899 assert(index
== 0); /* only seek supported for now */
905 pos
->content_size
= -1U; /* Unknown at this point */
906 pos
->packet_size
= WRITE_PACKET_LEN
;
907 off
= posix_fallocate(pos
->fd
, pos
->mmap_offset
,
908 pos
->packet_size
/ CHAR_BIT
);
916 if (pos
->offset
== EOF
) {
919 assert(pos
->cur_index
< pos
->packet_index
->len
);
920 /* The reader will expect us to skip padding */
925 if (index
>= pos
->packet_index
->len
) {
929 pos
->cur_index
= index
;
935 packet_index
= &g_array_index(pos
->packet_index
,
936 struct packet_index
, pos
->cur_index
);
937 if (pos
->cur_index
> 0) {
938 prev_index
= &g_array_index(pos
->packet_index
,
944 ctf_update_current_packet_index(&file_stream
->parent
,
945 prev_index
, packet_index
);
947 if (pos
->cur_index
>= pos
->packet_index
->len
) {
953 * We need to check if we are in trace read or called
954 * from packet indexing. In this last case, the
955 * collection is not there, so we cannot print the
958 if ((&file_stream
->parent
)->stream_class
->trace
->parent
.collection
) {
959 ctf_print_discarded(stderr
, &file_stream
->parent
);
962 packet_index
= &g_array_index(pos
->packet_index
,
965 file_stream
->parent
.cycles_timestamp
= packet_index
->ts_cycles
.timestamp_begin
;
967 file_stream
->parent
.real_timestamp
= packet_index
->ts_real
.timestamp_begin
;
969 /* Lookup context/packet size in index */
970 if (packet_index
->data_offset
== -1) {
971 ret
= find_data_offset(pos
, file_stream
, packet_index
);
976 pos
->content_size
= packet_index
->content_size
;
977 pos
->packet_size
= packet_index
->packet_size
;
978 pos
->mmap_offset
= packet_index
->offset
;
979 pos
->data_offset
= packet_index
->data_offset
;
980 if (pos
->data_offset
< packet_index
->content_size
) {
981 pos
->offset
= 0; /* will read headers */
982 } else if (pos
->data_offset
== packet_index
->content_size
) {
984 pos
->offset
= packet_index
->data_offset
;
986 goto read_next_packet
;
992 /* map new base. Need mapping length from header. */
993 pos
->base_mma
= mmap_align(pos
->packet_size
/ CHAR_BIT
, pos
->prot
,
994 pos
->flags
, pos
->fd
, pos
->mmap_offset
);
995 if (pos
->base_mma
== MAP_FAILED
) {
996 fprintf(stderr
, "[error] mmap error %s.\n",
1001 /* update trace_packet_header and stream_packet_context */
1002 if (!(pos
->prot
& PROT_WRITE
) &&
1003 file_stream
->parent
.trace_packet_header
) {
1004 /* Read packet header */
1005 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
1008 if (!(pos
->prot
& PROT_WRITE
) &&
1009 file_stream
->parent
.stream_packet_context
) {
1010 /* Read packet context */
1011 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
1017 int packet_metadata(struct ctf_trace
*td
, FILE *fp
)
1023 len
= fread(&magic
, sizeof(magic
), 1, fp
);
1027 if (magic
== TSDL_MAGIC
) {
1029 td
->byte_order
= BYTE_ORDER
;
1030 CTF_TRACE_SET_FIELD(td
, byte_order
);
1031 } else if (magic
== GUINT32_SWAP_LE_BE(TSDL_MAGIC
)) {
1033 td
->byte_order
= (BYTE_ORDER
== BIG_ENDIAN
) ?
1034 LITTLE_ENDIAN
: BIG_ENDIAN
;
1035 CTF_TRACE_SET_FIELD(td
, byte_order
);
1043 * Returns 0 on success, -1 on error.
1046 int check_version(unsigned int major
, unsigned int minor
)
1061 /* eventually return an error instead of warning */
1063 fprintf(stderr
, "[warning] Unsupported CTF specification version %u.%u. Trying anyway.\n",
1069 int ctf_trace_metadata_packet_read(struct ctf_trace
*td
, FILE *in
,
1072 struct metadata_packet_header header
;
1073 size_t readlen
, writelen
, toread
;
1074 char buf
[4096 + 1]; /* + 1 for debug-mode \0 */
1077 readlen
= fread(&header
, header_sizeof(header
), 1, in
);
1081 if (td
->byte_order
!= BYTE_ORDER
) {
1082 header
.magic
= GUINT32_SWAP_LE_BE(header
.magic
);
1083 header
.checksum
= GUINT32_SWAP_LE_BE(header
.checksum
);
1084 header
.content_size
= GUINT32_SWAP_LE_BE(header
.content_size
);
1085 header
.packet_size
= GUINT32_SWAP_LE_BE(header
.packet_size
);
1087 if (header
.checksum
)
1088 fprintf(stderr
, "[warning] checksum verification not supported yet.\n");
1089 if (header
.compression_scheme
) {
1090 fprintf(stderr
, "[error] compression (%u) not supported yet.\n",
1091 header
.compression_scheme
);
1094 if (header
.encryption_scheme
) {
1095 fprintf(stderr
, "[error] encryption (%u) not supported yet.\n",
1096 header
.encryption_scheme
);
1099 if (header
.checksum_scheme
) {
1100 fprintf(stderr
, "[error] checksum (%u) not supported yet.\n",
1101 header
.checksum_scheme
);
1104 if (check_version(header
.major
, header
.minor
) < 0)
1106 if (!CTF_TRACE_FIELD_IS_SET(td
, uuid
)) {
1107 memcpy(td
->uuid
, header
.uuid
, sizeof(header
.uuid
));
1108 CTF_TRACE_SET_FIELD(td
, uuid
);
1110 if (bt_uuid_compare(header
.uuid
, td
->uuid
))
1114 if ((header
.content_size
/ CHAR_BIT
) < header_sizeof(header
))
1117 toread
= (header
.content_size
/ CHAR_BIT
) - header_sizeof(header
);
1120 readlen
= fread(buf
, sizeof(char), min(sizeof(buf
) - 1, toread
), in
);
1125 if (babeltrace_debug
) {
1126 buf
[readlen
] = '\0';
1127 fprintf(stderr
, "[debug] metadata packet read: %s\n",
1131 writelen
= fwrite(buf
, sizeof(char), readlen
, out
);
1132 if (writelen
< readlen
) {
1142 ret
= 0; /* continue reading next packet */
1149 toread
= (header
.packet_size
- header
.content_size
) / CHAR_BIT
;
1150 ret
= fseek(in
, toread
, SEEK_CUR
);
1152 fprintf(stderr
, "[warning] Missing padding at end of file\n");
1159 int ctf_trace_metadata_stream_read(struct ctf_trace
*td
, FILE **fp
,
1163 size_t size
, buflen
;
1168 * Using strlen on *buf instead of size of open_memstream
1169 * because its size includes garbage at the end (after final
1170 * \0). This is the allocated size, not the actual string size.
1172 out
= babeltrace_open_memstream(buf
, &size
);
1174 perror("Metadata open_memstream");
1178 ret
= ctf_trace_metadata_packet_read(td
, in
, out
);
1187 /* close to flush the buffer */
1188 ret
= babeltrace_close_memstream(buf
, &size
, out
);
1192 perror("babeltrace_flush_memstream");
1194 closeret
= fclose(in
);
1196 perror("Error in fclose");
1202 perror("Error in fclose");
1204 /* open for reading */
1205 buflen
= strlen(*buf
);
1210 *fp
= babeltrace_fmemopen(*buf
, buflen
, "rb");
1212 perror("Metadata fmemopen");
1219 int ctf_trace_metadata_read(struct ctf_trace
*td
, FILE *metadata_fp
,
1220 struct ctf_scanner
*scanner
, int append
)
1222 struct ctf_file_stream
*metadata_stream
;
1225 int ret
= 0, closeret
;
1227 metadata_stream
= g_new0(struct ctf_file_stream
, 1);
1228 metadata_stream
->pos
.last_offset
= LAST_OFFSET_POISON
;
1232 metadata_stream
->pos
.fd
= -1;
1234 td
->metadata
= &metadata_stream
->parent
;
1235 metadata_stream
->pos
.fd
= openat(td
->dirfd
, "metadata", O_RDONLY
);
1236 if (metadata_stream
->pos
.fd
< 0) {
1237 fprintf(stderr
, "Unable to open metadata.\n");
1242 fp
= fdopen(metadata_stream
->pos
.fd
, "r");
1244 fprintf(stderr
, "[error] Unable to open metadata stream.\n");
1245 perror("Metadata stream open");
1249 /* fd now belongs to fp */
1250 metadata_stream
->pos
.fd
= -1;
1252 if (babeltrace_debug
)
1255 if (packet_metadata(td
, fp
)) {
1256 ret
= ctf_trace_metadata_stream_read(td
, &fp
, &buf
);
1260 td
->metadata_string
= buf
;
1261 td
->metadata_packetized
= 1;
1264 unsigned int major
, minor
;
1267 td
->byte_order
= BYTE_ORDER
;
1269 /* Check text-only metadata header and version */
1270 nr_items
= fscanf(fp
, "/* CTF %10u.%10u", &major
, &minor
);
1272 fprintf(stderr
, "[warning] Ill-shapen or missing \"/* CTF x.y\" header for text-only metadata.\n");
1273 if (check_version(major
, minor
) < 0) {
1281 ret
= ctf_scanner_append_ast(scanner
, fp
);
1283 fprintf(stderr
, "[error] Error creating AST\n");
1287 if (babeltrace_debug
) {
1288 ret
= ctf_visitor_print_xml(stderr
, 0, &scanner
->ast
->root
);
1290 fprintf(stderr
, "[error] Error visiting AST for XML output\n");
1295 ret
= ctf_visitor_semantic_check(stderr
, 0, &scanner
->ast
->root
);
1297 fprintf(stderr
, "[error] Error in CTF semantic validation %d\n", ret
);
1300 ret
= ctf_visitor_construct_metadata(stderr
, 0, &scanner
->ast
->root
,
1301 td
, td
->byte_order
);
1303 fprintf(stderr
, "[error] Error in CTF metadata constructor %d\n", ret
);
1308 closeret
= fclose(fp
);
1310 perror("Error on fclose");
1314 if (metadata_stream
->pos
.fd
>= 0) {
1315 closeret
= close(metadata_stream
->pos
.fd
);
1317 perror("Error on metadata stream fd close");
1322 g_free(metadata_stream
);
1327 struct ctf_event_definition
*create_event_definitions(struct ctf_trace
*td
,
1328 struct ctf_stream_definition
*stream
,
1329 struct ctf_event_declaration
*event
)
1331 struct ctf_event_definition
*stream_event
= g_new0(struct ctf_event_definition
, 1);
1333 if (event
->context_decl
) {
1334 struct bt_definition
*definition
=
1335 event
->context_decl
->p
.definition_new(&event
->context_decl
->p
,
1336 stream
->parent_def_scope
, 0, 0, "event.context");
1340 stream_event
->event_context
= container_of(definition
,
1341 struct definition_struct
, p
);
1342 stream
->parent_def_scope
= stream_event
->event_context
->p
.scope
;
1344 if (event
->fields_decl
) {
1345 struct bt_definition
*definition
=
1346 event
->fields_decl
->p
.definition_new(&event
->fields_decl
->p
,
1347 stream
->parent_def_scope
, 0, 0, "event.fields");
1351 stream_event
->event_fields
= container_of(definition
,
1352 struct definition_struct
, p
);
1353 stream
->parent_def_scope
= stream_event
->event_fields
->p
.scope
;
1355 stream_event
->stream
= stream
;
1356 return stream_event
;
1359 if (stream_event
->event_fields
)
1360 bt_definition_unref(&stream_event
->event_fields
->p
);
1361 if (stream_event
->event_context
)
1362 bt_definition_unref(&stream_event
->event_context
->p
);
1363 fprintf(stderr
, "[error] Unable to create event definition for event \"%s\".\n",
1364 g_quark_to_string(event
->name
));
1369 int copy_event_declarations_stream_class_to_stream(struct ctf_trace
*td
,
1370 struct ctf_stream_declaration
*stream_class
,
1371 struct ctf_stream_definition
*stream
)
1373 size_t def_size
, class_size
, i
;
1376 def_size
= stream
->events_by_id
->len
;
1377 class_size
= stream_class
->events_by_id
->len
;
1379 g_ptr_array_set_size(stream
->events_by_id
, class_size
);
1380 for (i
= def_size
; i
< class_size
; i
++) {
1381 struct ctf_event_declaration
*event
=
1382 g_ptr_array_index(stream_class
->events_by_id
, i
);
1383 struct ctf_event_definition
*stream_event
;
1387 stream_event
= create_event_definitions(td
, stream
, event
);
1388 if (!stream_event
) {
1392 g_ptr_array_index(stream
->events_by_id
, i
) = stream_event
;
1399 int create_stream_definitions(struct ctf_trace
*td
, struct ctf_stream_definition
*stream
)
1401 struct ctf_stream_declaration
*stream_class
;
1405 if (stream
->stream_definitions_created
)
1408 stream_class
= stream
->stream_class
;
1410 if (stream_class
->packet_context_decl
) {
1411 struct bt_definition
*definition
=
1412 stream_class
->packet_context_decl
->p
.definition_new(&stream_class
->packet_context_decl
->p
,
1413 stream
->parent_def_scope
, 0, 0, "stream.packet.context");
1418 stream
->stream_packet_context
= container_of(definition
,
1419 struct definition_struct
, p
);
1420 stream
->parent_def_scope
= stream
->stream_packet_context
->p
.scope
;
1422 if (stream_class
->event_header_decl
) {
1423 struct bt_definition
*definition
=
1424 stream_class
->event_header_decl
->p
.definition_new(&stream_class
->event_header_decl
->p
,
1425 stream
->parent_def_scope
, 0, 0, "stream.event.header");
1430 stream
->stream_event_header
=
1431 container_of(definition
, struct definition_struct
, p
);
1432 stream
->parent_def_scope
= stream
->stream_event_header
->p
.scope
;
1434 if (stream_class
->event_context_decl
) {
1435 struct bt_definition
*definition
=
1436 stream_class
->event_context_decl
->p
.definition_new(&stream_class
->event_context_decl
->p
,
1437 stream
->parent_def_scope
, 0, 0, "stream.event.context");
1442 stream
->stream_event_context
=
1443 container_of(definition
, struct definition_struct
, p
);
1444 stream
->parent_def_scope
= stream
->stream_event_context
->p
.scope
;
1446 stream
->events_by_id
= g_ptr_array_new();
1447 ret
= copy_event_declarations_stream_class_to_stream(td
,
1448 stream_class
, stream
);
1454 for (i
= 0; i
< stream
->events_by_id
->len
; i
++) {
1455 struct ctf_event_definition
*stream_event
= g_ptr_array_index(stream
->events_by_id
, i
);
1457 g_free(stream_event
);
1459 g_ptr_array_free(stream
->events_by_id
, TRUE
);
1461 if (stream
->stream_event_context
)
1462 bt_definition_unref(&stream
->stream_event_context
->p
);
1463 if (stream
->stream_event_header
)
1464 bt_definition_unref(&stream
->stream_event_header
->p
);
1465 if (stream
->stream_packet_context
)
1466 bt_definition_unref(&stream
->stream_packet_context
->p
);
1467 fprintf(stderr
, "[error] Unable to create stream (%" PRIu64
") definitions: %s\n",
1468 stream_class
->stream_id
, strerror(-ret
));
1473 int stream_assign_class(struct ctf_trace
*td
,
1474 struct ctf_file_stream
*file_stream
,
1477 struct ctf_stream_declaration
*stream
;
1480 file_stream
->parent
.stream_id
= stream_id
;
1481 if (stream_id
>= td
->streams
->len
) {
1482 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared in metadata.\n", stream_id
);
1485 stream
= g_ptr_array_index(td
->streams
, stream_id
);
1487 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared in metadata.\n", stream_id
);
1490 file_stream
->parent
.stream_class
= stream
;
1491 ret
= create_stream_definitions(td
, &file_stream
->parent
);
1498 int create_stream_one_packet_index(struct ctf_stream_pos
*pos
,
1499 struct ctf_trace
*td
,
1500 struct ctf_file_stream
*file_stream
,
1503 struct packet_index packet_index
;
1504 uint64_t stream_id
= 0;
1505 uint64_t packet_map_len
= DEFAULT_HEADER_LEN
, tmp_map_len
;
1506 int first_packet
= 0;
1511 if (!pos
->mmap_offset
) {
1515 if (filesize
- pos
->mmap_offset
< (packet_map_len
>> LOG2_CHAR_BIT
)) {
1516 packet_map_len
= (filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
;
1519 if (pos
->base_mma
) {
1520 /* unmap old base */
1521 ret
= munmap_align(pos
->base_mma
);
1523 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
1527 pos
->base_mma
= NULL
;
1529 /* map new base. Need mapping length from header. */
1530 pos
->base_mma
= mmap_align(packet_map_len
>> LOG2_CHAR_BIT
, PROT_READ
,
1531 MAP_PRIVATE
, pos
->fd
, pos
->mmap_offset
);
1532 assert(pos
->base_mma
!= MAP_FAILED
);
1534 * Use current mapping size as temporary content and packet
1537 pos
->content_size
= packet_map_len
;
1538 pos
->packet_size
= packet_map_len
;
1539 pos
->offset
= 0; /* Position of the packet header */
1541 packet_index
.offset
= pos
->mmap_offset
;
1542 packet_index
.content_size
= 0;
1543 packet_index
.packet_size
= 0;
1544 packet_index
.ts_real
.timestamp_begin
= 0;
1545 packet_index
.ts_real
.timestamp_end
= 0;
1546 packet_index
.ts_cycles
.timestamp_begin
= 0;
1547 packet_index
.ts_cycles
.timestamp_end
= 0;
1548 packet_index
.events_discarded
= 0;
1549 packet_index
.events_discarded_len
= 0;
1551 /* read and check header, set stream id (and check) */
1552 if (file_stream
->parent
.trace_packet_header
) {
1553 /* Read packet header */
1554 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
1558 fprintf(stderr
, "[error] Unable to read packet header: %s\n", strerror(-ret
));
1561 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("magic"));
1562 if (len_index
>= 0) {
1563 struct bt_definition
*field
;
1566 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1567 magic
= bt_get_unsigned_int(field
);
1568 if (magic
!= CTF_MAGIC
) {
1569 fprintf(stderr
, "[error] Invalid magic number 0x%" PRIX64
" at packet %u (file offset %zd).\n",
1571 file_stream
->pos
.packet_index
->len
,
1572 (ssize_t
) pos
->mmap_offset
);
1578 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("uuid"));
1579 if (len_index
>= 0) {
1580 struct definition_array
*defarray
;
1581 struct bt_definition
*field
;
1583 uint8_t uuidval
[BABELTRACE_UUID_LEN
];
1585 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1586 assert(field
->declaration
->id
== CTF_TYPE_ARRAY
);
1587 defarray
= container_of(field
, struct definition_array
, p
);
1588 assert(bt_array_len(defarray
) == BABELTRACE_UUID_LEN
);
1590 for (i
= 0; i
< BABELTRACE_UUID_LEN
; i
++) {
1591 struct bt_definition
*elem
;
1593 elem
= bt_array_index(defarray
, i
);
1594 uuidval
[i
] = bt_get_unsigned_int(elem
);
1596 ret
= bt_uuid_compare(td
->uuid
, uuidval
);
1598 fprintf(stderr
, "[error] Unique Universal Identifiers do not match.\n");
1603 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("stream_id"));
1604 if (len_index
>= 0) {
1605 struct bt_definition
*field
;
1607 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1608 stream_id
= bt_get_unsigned_int(field
);
1612 if (!first_packet
&& file_stream
->parent
.stream_id
!= stream_id
) {
1613 fprintf(stderr
, "[error] Stream ID is changing within a stream: expecting %" PRIu64
", but packet has %" PRIu64
"\n",
1615 file_stream
->parent
.stream_id
);
1619 ret
= stream_assign_class(td
, file_stream
, stream_id
);
1624 if (file_stream
->parent
.stream_packet_context
) {
1625 /* Read packet context */
1626 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
1630 fprintf(stderr
, "[error] Unable to read packet context: %s\n", strerror(-ret
));
1633 /* read packet size from header */
1634 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("packet_size"));
1635 if (len_index
>= 0) {
1636 struct bt_definition
*field
;
1638 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1639 packet_index
.packet_size
= bt_get_unsigned_int(field
);
1641 /* Use file size for packet size */
1642 packet_index
.packet_size
= filesize
* CHAR_BIT
;
1645 /* read content size from header */
1646 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("content_size"));
1647 if (len_index
>= 0) {
1648 struct bt_definition
*field
;
1650 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1651 packet_index
.content_size
= bt_get_unsigned_int(field
);
1653 /* Use packet size if non-zero, else file size */
1654 packet_index
.content_size
= packet_index
.packet_size
? : filesize
* CHAR_BIT
;
1657 /* read timestamp begin from header */
1658 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("timestamp_begin"));
1659 if (len_index
>= 0) {
1660 struct bt_definition
*field
;
1662 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1663 packet_index
.ts_cycles
.timestamp_begin
= bt_get_unsigned_int(field
);
1664 if (file_stream
->parent
.stream_class
->trace
->parent
.collection
) {
1665 packet_index
.ts_real
.timestamp_begin
=
1666 ctf_get_real_timestamp(
1667 &file_stream
->parent
,
1668 packet_index
.ts_cycles
.timestamp_begin
);
1672 /* read timestamp end from header */
1673 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("timestamp_end"));
1674 if (len_index
>= 0) {
1675 struct bt_definition
*field
;
1677 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1678 packet_index
.ts_cycles
.timestamp_end
= bt_get_unsigned_int(field
);
1679 if (file_stream
->parent
.stream_class
->trace
->parent
.collection
) {
1680 packet_index
.ts_real
.timestamp_end
=
1681 ctf_get_real_timestamp(
1682 &file_stream
->parent
,
1683 packet_index
.ts_cycles
.timestamp_end
);
1687 /* read events discarded from header */
1688 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("events_discarded"));
1689 if (len_index
>= 0) {
1690 struct bt_definition
*field
;
1692 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1693 packet_index
.events_discarded
= bt_get_unsigned_int(field
);
1694 packet_index
.events_discarded_len
= bt_get_int_len(field
);
1697 /* Use file size for packet size */
1698 packet_index
.packet_size
= filesize
* CHAR_BIT
;
1699 /* Use packet size if non-zero, else file size */
1700 packet_index
.content_size
= packet_index
.packet_size
? : filesize
* CHAR_BIT
;
1703 /* Validate content size and packet size values */
1704 if (packet_index
.content_size
> packet_index
.packet_size
) {
1705 fprintf(stderr
, "[error] Content size (%" PRIu64
" bits) is larger than packet size (%" PRIu64
" bits).\n",
1706 packet_index
.content_size
, packet_index
.packet_size
);
1710 if (packet_index
.packet_size
> ((uint64_t) filesize
- packet_index
.offset
) * CHAR_BIT
) {
1711 fprintf(stderr
, "[error] Packet size (%" PRIu64
" bits) is larger than remaining file size (%" PRIu64
" bits).\n",
1712 packet_index
.packet_size
, ((uint64_t) filesize
- packet_index
.offset
) * CHAR_BIT
);
1716 if (packet_index
.content_size
< pos
->offset
) {
1717 fprintf(stderr
, "[error] Invalid CTF stream: content size is smaller than packet headers.\n");
1721 if ((packet_index
.packet_size
>> LOG2_CHAR_BIT
) == 0) {
1722 fprintf(stderr
, "[error] Invalid CTF stream: packet size needs to be at least one byte\n");
1726 /* Save position after header and context */
1727 packet_index
.data_offset
= pos
->offset
;
1729 /* add index to packet array */
1730 g_array_append_val(file_stream
->pos
.packet_index
, packet_index
);
1732 pos
->mmap_offset
+= packet_index
.packet_size
>> LOG2_CHAR_BIT
;
1736 /* Retry with larger mapping */
1738 if (packet_map_len
== ((filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
)) {
1740 * Reached EOF, but still expecting header/context data.
1742 fprintf(stderr
, "[error] Reached end of file, but still expecting header or context fields.\n");
1745 /* Double the mapping len, and retry */
1746 tmp_map_len
= packet_map_len
<< 1;
1747 if (tmp_map_len
>> 1 != packet_map_len
) {
1749 fprintf(stderr
, "[error] Packet mapping length overflow\n");
1752 packet_map_len
= tmp_map_len
;
1757 int create_stream_packet_index(struct ctf_trace
*td
,
1758 struct ctf_file_stream
*file_stream
)
1760 struct ctf_stream_pos
*pos
;
1761 struct stat filestats
;
1764 pos
= &file_stream
->pos
;
1766 ret
= fstat(pos
->fd
, &filestats
);
1770 /* Deal with empty files */
1771 if (!filestats
.st_size
) {
1772 if (file_stream
->parent
.trace_packet_header
1773 || file_stream
->parent
.stream_packet_context
) {
1775 * We expect a trace packet header and/or stream packet
1776 * context. Since a trace needs to have at least one
1777 * packet, empty files are therefore not accepted.
1779 fprintf(stderr
, "[error] Encountered an empty file, but expecting a trace packet header.\n");
1783 * Without trace packet header nor stream packet
1784 * context, a one-packet trace can indeed be empty. This
1785 * is only valid if there is only one stream class: 0.
1787 ret
= stream_assign_class(td
, file_stream
, 0);
1794 for (pos
->mmap_offset
= 0; pos
->mmap_offset
< filestats
.st_size
; ) {
1795 ret
= create_stream_one_packet_index(pos
, td
, file_stream
,
1804 int create_trace_definitions(struct ctf_trace
*td
, struct ctf_stream_definition
*stream
)
1808 if (td
->packet_header_decl
) {
1809 struct bt_definition
*definition
=
1810 td
->packet_header_decl
->p
.definition_new(&td
->packet_header_decl
->p
,
1811 stream
->parent_def_scope
, 0, 0, "trace.packet.header");
1816 stream
->trace_packet_header
=
1817 container_of(definition
, struct definition_struct
, p
);
1818 stream
->parent_def_scope
= stream
->trace_packet_header
->p
.scope
;
1824 fprintf(stderr
, "[error] Unable to create trace definitions: %s\n", strerror(-ret
));
1829 int import_stream_packet_index(struct ctf_trace
*td
,
1830 struct ctf_file_stream
*file_stream
)
1832 struct ctf_stream_pos
*pos
;
1833 struct ctf_packet_index
*ctf_index
= NULL
;
1834 struct ctf_packet_index_file_hdr index_hdr
;
1835 struct packet_index index
;
1836 uint32_t packet_index_len
;
1838 int first_packet
= 1;
1841 pos
= &file_stream
->pos
;
1843 len
= fread(&index_hdr
, sizeof(index_hdr
), 1, pos
->index_fp
);
1845 perror("read index file header");
1849 /* Check the index header */
1850 if (be32toh(index_hdr
.magic
) != CTF_INDEX_MAGIC
) {
1851 fprintf(stderr
, "[error] wrong index magic\n");
1855 if (be32toh(index_hdr
.index_major
) != CTF_INDEX_MAJOR
) {
1856 fprintf(stderr
, "[error] Incompatible index file %" PRIu32
1857 ".%" PRIu32
", supported %d.%d\n",
1858 be32toh(index_hdr
.index_major
),
1859 be32toh(index_hdr
.index_minor
), CTF_INDEX_MAJOR
,
1864 packet_index_len
= be32toh(index_hdr
.packet_index_len
);
1865 if (packet_index_len
== 0) {
1866 fprintf(stderr
, "[error] Packet index length cannot be 0.\n");
1871 * Allocate the index length found in header, not internal
1874 ctf_index
= g_malloc0(packet_index_len
);
1875 while (fread(ctf_index
, packet_index_len
, 1,
1876 pos
->index_fp
) == 1) {
1878 struct ctf_stream_declaration
*stream
= NULL
;
1880 memset(&index
, 0, sizeof(index
));
1881 index
.offset
= be64toh(ctf_index
->offset
);
1882 index
.packet_size
= be64toh(ctf_index
->packet_size
);
1883 index
.content_size
= be64toh(ctf_index
->content_size
);
1884 index
.ts_cycles
.timestamp_begin
= be64toh(ctf_index
->timestamp_begin
);
1885 index
.ts_cycles
.timestamp_end
= be64toh(ctf_index
->timestamp_end
);
1886 index
.events_discarded
= be64toh(ctf_index
->events_discarded
);
1887 index
.events_discarded_len
= 64;
1888 index
.data_offset
= -1;
1889 stream_id
= be64toh(ctf_index
->stream_id
);
1891 if (!first_packet
) {
1892 /* add index to packet array */
1893 g_array_append_val(file_stream
->pos
.packet_index
, index
);
1897 file_stream
->parent
.stream_id
= stream_id
;
1898 if (stream_id
< td
->streams
->len
) {
1899 stream
= g_ptr_array_index(td
->streams
, stream_id
);
1902 fprintf(stderr
, "[error] Stream %" PRIu64
1903 " is not declared in metadata.\n",
1908 file_stream
->parent
.stream_class
= stream
;
1909 ret
= create_stream_definitions(td
, &file_stream
->parent
);
1913 /* add index to packet array */
1914 g_array_append_val(file_stream
->pos
.packet_index
, index
);
1917 /* Index containing only the header. */
1918 if (!file_stream
->parent
.stream_class
) {
1931 * Note: many file streams can inherit from the same stream class
1932 * description (metadata).
1935 int ctf_open_file_stream_read(struct ctf_trace
*td
, const char *path
, int flags
,
1936 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
1939 int ret
, fd
, closeret
;
1940 struct ctf_file_stream
*file_stream
;
1941 struct stat statbuf
;
1944 fd
= openat(td
->dirfd
, path
, flags
);
1946 perror("File stream openat()");
1951 /* Don't try to mmap subdirectories. Skip them, return success. */
1952 ret
= fstat(fd
, &statbuf
);
1954 perror("File stream fstat()");
1957 if (S_ISDIR(statbuf
.st_mode
)) {
1958 if (strncmp(path
, "index", 5) != 0) {
1959 fprintf(stderr
, "[warning] Skipping directory '%s' "
1960 "found in trace\n", path
);
1965 if (!statbuf
.st_size
) {
1966 /** Skip empty files. */
1968 goto fd_is_empty_file
;
1971 file_stream
= g_new0(struct ctf_file_stream
, 1);
1972 file_stream
->pos
.last_offset
= LAST_OFFSET_POISON
;
1973 file_stream
->pos
.fd
= -1;
1974 file_stream
->pos
.index_fp
= NULL
;
1976 strncpy(file_stream
->parent
.path
, path
, PATH_MAX
);
1977 file_stream
->parent
.path
[PATH_MAX
- 1] = '\0';
1980 file_stream
->pos
.packet_seek
= packet_seek
;
1982 fprintf(stderr
, "[error] packet_seek function undefined.\n");
1987 ret
= ctf_init_pos(&file_stream
->pos
, &td
->parent
, fd
, flags
);
1990 ret
= create_trace_definitions(td
, &file_stream
->parent
);
1994 * For now, only a single clock per trace is supported.
1996 file_stream
->parent
.current_clock
= td
->parent
.single_clock
;
1999 * Allocate the index name for this stream and try to open it.
2001 index_name
= malloc((strlen(path
) + sizeof(INDEX_PATH
)) * sizeof(char));
2003 fprintf(stderr
, "[error] Cannot allocate index filename\n");
2007 snprintf(index_name
, strlen(path
) + sizeof(INDEX_PATH
),
2010 if (faccessat(td
->dirfd
, index_name
, O_RDONLY
, flags
) < 0) {
2011 ret
= create_stream_packet_index(td
, file_stream
);
2013 fprintf(stderr
, "[error] Stream index creation error.\n");
2017 ret
= openat(td
->dirfd
, index_name
, flags
);
2019 perror("Index file openat()");
2023 file_stream
->pos
.index_fp
= fdopen(ret
, "r");
2024 if (!file_stream
->pos
.index_fp
) {
2025 perror("fdopen() error");
2028 ret
= import_stream_packet_index(td
, file_stream
);
2033 ret
= fclose(file_stream
->pos
.index_fp
);
2035 perror("close index");
2041 /* Add stream file to stream class */
2042 g_ptr_array_add(file_stream
->parent
.stream_class
->streams
,
2043 &file_stream
->parent
);
2047 if (file_stream
->pos
.index_fp
) {
2048 ret
= fclose(file_stream
->pos
.index_fp
);
2050 perror("close index");
2053 if (file_stream
->parent
.trace_packet_header
)
2054 bt_definition_unref(&file_stream
->parent
.trace_packet_header
->p
);
2058 closeret
= ctf_fini_pos(&file_stream
->pos
);
2060 fprintf(stderr
, "Error on ctf_fini_pos\n");
2062 g_free(file_stream
);
2066 closeret
= close(fd
);
2068 perror("Error on fd close");
2075 int ctf_open_trace_read(struct ctf_trace
*td
,
2076 const char *path
, int flags
,
2077 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2078 int whence
), FILE *metadata_fp
)
2080 struct ctf_scanner
*scanner
;
2082 struct dirent
*dirent
;
2083 struct dirent
*diriter
;
2089 /* Open trace directory */
2090 td
->dir
= opendir(path
);
2092 fprintf(stderr
, "[error] Unable to open trace directory \"%s\".\n", path
);
2097 td
->dirfd
= open(path
, 0);
2098 if (td
->dirfd
< 0) {
2099 fprintf(stderr
, "[error] Unable to open trace directory file descriptor for path \"%s\".\n", path
);
2100 perror("Trace directory open");
2104 strncpy(td
->parent
.path
, path
, sizeof(td
->parent
.path
));
2105 td
->parent
.path
[sizeof(td
->parent
.path
) - 1] = '\0';
2108 * Keep the metadata file separate.
2109 * Keep scanner object local to the open. We don't support
2110 * incremental metadata append for on-disk traces.
2112 scanner
= ctf_scanner_alloc();
2114 fprintf(stderr
, "[error] Error allocating scanner\n");
2116 goto error_metadata
;
2118 ret
= ctf_trace_metadata_read(td
, metadata_fp
, scanner
, 0);
2119 ctf_scanner_free(scanner
);
2121 if (ret
== -ENOENT
) {
2122 fprintf(stderr
, "[warning] Empty metadata.\n");
2124 fprintf(stderr
, "[warning] Unable to open trace metadata for path \"%s\".\n", path
);
2125 goto error_metadata
;
2129 * Open each stream: for each file, try to open, check magic
2130 * number, and get the stream ID to add to the right location in
2134 dirent_len
= offsetof(struct dirent
, d_name
) +
2135 fpathconf(td
->dirfd
, _PC_NAME_MAX
) + 1;
2137 dirent
= malloc(dirent_len
);
2140 ret
= readdir_r(td
->dir
, dirent
, &diriter
);
2142 fprintf(stderr
, "[error] Readdir error.\n");
2147 /* Ignore hidden files, ., .. and metadata. */
2148 if (!strncmp(diriter
->d_name
, ".", 1)
2149 || !strcmp(diriter
->d_name
, "..")
2150 || !strcmp(diriter
->d_name
, "metadata"))
2153 /* Ignore index files : *.idx */
2154 ext
= strrchr(diriter
->d_name
, '.');
2155 if (ext
&& (!strcmp(ext
, ".idx"))) {
2159 ret
= ctf_open_file_stream_read(td
, diriter
->d_name
,
2160 flags
, packet_seek
);
2162 fprintf(stderr
, "[error] Open file stream error.\n");
2173 closeret
= close(td
->dirfd
);
2175 perror("Error on fd close");
2178 closeret
= closedir(td
->dir
);
2180 perror("Error on closedir");
2187 * ctf_open_trace: Open a CTF trace and index it.
2188 * Note that the user must seek the trace after the open (using the iterator)
2189 * since the index creation read it entirely.
2192 struct bt_trace_descriptor
*ctf_open_trace(const char *path
, int flags
,
2193 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2194 int whence
), FILE *metadata_fp
)
2196 struct ctf_trace
*td
;
2200 * If packet_seek is NULL, we provide our default version.
2203 packet_seek
= ctf_packet_seek
;
2205 td
= g_new0(struct ctf_trace
, 1);
2207 switch (flags
& O_ACCMODE
) {
2210 fprintf(stderr
, "[error] Path missing for input CTF trace.\n");
2213 ret
= ctf_open_trace_read(td
, path
, flags
, packet_seek
, metadata_fp
);
2218 fprintf(stderr
, "[error] Opening CTF traces for output is not supported yet.\n");
2221 fprintf(stderr
, "[error] Incorrect open flags.\n");
2232 void ctf_init_mmap_pos(struct ctf_stream_pos
*pos
,
2233 struct bt_mmap_stream
*mmap_info
)
2235 pos
->mmap_offset
= 0;
2236 pos
->packet_size
= 0;
2237 pos
->content_size
= 0;
2238 pos
->content_size_loc
= NULL
;
2239 pos
->fd
= mmap_info
->fd
;
2240 pos
->base_mma
= NULL
;
2244 pos
->prot
= PROT_READ
;
2245 pos
->flags
= MAP_PRIVATE
;
2246 pos
->parent
.rw_table
= read_dispatch_table
;
2247 pos
->parent
.event_cb
= ctf_read_event
;
2248 pos
->priv
= mmap_info
->priv
;
2249 pos
->packet_index
= g_array_new(FALSE
, TRUE
,
2250 sizeof(struct packet_index
));
2254 int prepare_mmap_stream_definition(struct ctf_trace
*td
,
2255 struct ctf_file_stream
*file_stream
,
2256 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2259 struct ctf_stream_declaration
*stream
;
2263 /* Ask for the first packet to get the stream_id. */
2264 packet_seek(&file_stream
->pos
.parent
, 0, SEEK_SET
);
2265 stream_id
= file_stream
->parent
.stream_id
;
2266 if (stream_id
>= td
->streams
->len
) {
2267 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared "
2268 "in metadata.\n", stream_id
);
2272 stream
= g_ptr_array_index(td
->streams
, stream_id
);
2274 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared "
2275 "in metadata.\n", stream_id
);
2279 file_stream
->parent
.stream_class
= stream
;
2280 ret
= create_stream_definitions(td
, &file_stream
->parent
);
2286 int ctf_open_mmap_stream_read(struct ctf_trace
*td
,
2287 struct bt_mmap_stream
*mmap_info
,
2288 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2292 struct ctf_file_stream
*file_stream
;
2294 file_stream
= g_new0(struct ctf_file_stream
, 1);
2295 file_stream
->parent
.stream_id
= -1ULL;
2296 file_stream
->pos
.last_offset
= LAST_OFFSET_POISON
;
2297 ctf_init_mmap_pos(&file_stream
->pos
, mmap_info
);
2299 file_stream
->pos
.packet_seek
= packet_seek
;
2301 ret
= create_trace_definitions(td
, &file_stream
->parent
);
2306 ret
= prepare_mmap_stream_definition(td
, file_stream
, packet_seek
);
2311 * For now, only a single clock per trace is supported.
2313 file_stream
->parent
.current_clock
= td
->parent
.single_clock
;
2315 /* Add stream file to stream class */
2316 g_ptr_array_add(file_stream
->parent
.stream_class
->streams
,
2317 &file_stream
->parent
);
2321 if (file_stream
->parent
.trace_packet_header
)
2322 bt_definition_unref(&file_stream
->parent
.trace_packet_header
->p
);
2324 g_free(file_stream
);
2329 int ctf_open_mmap_trace_read(struct ctf_trace
*td
,
2330 struct bt_mmap_stream_list
*mmap_list
,
2331 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2336 struct bt_mmap_stream
*mmap_info
;
2338 td
->scanner
= ctf_scanner_alloc();
2340 fprintf(stderr
, "[error] Error allocating scanner\n");
2344 ret
= ctf_trace_metadata_read(td
, metadata_fp
, td
->scanner
, 0);
2346 if (ret
== -ENOENT
) {
2347 fprintf(stderr
, "[warning] Empty metadata.\n");
2353 * for each stream, try to open, check magic number, and get the
2354 * stream ID to add to the right location in the stream array.
2356 bt_list_for_each_entry(mmap_info
, &mmap_list
->head
, list
) {
2357 ret
= ctf_open_mmap_stream_read(td
, mmap_info
, packet_seek
);
2359 fprintf(stderr
, "[error] Open file mmap stream error.\n");
2366 ctf_scanner_free(td
->scanner
);
2371 struct bt_trace_descriptor
*ctf_open_mmap_trace(
2372 struct bt_mmap_stream_list
*mmap_list
,
2373 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2377 struct ctf_trace
*td
;
2381 fprintf(stderr
, "[error] No metadata file pointer associated, "
2382 "required for mmap parsing\n");
2386 fprintf(stderr
, "[error] packet_seek function undefined.\n");
2389 td
= g_new0(struct ctf_trace
, 1);
2391 ret
= ctf_open_mmap_trace_read(td
, mmap_list
, packet_seek
, metadata_fp
);
2403 int ctf_append_trace_metadata(struct bt_trace_descriptor
*tdp
,
2406 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
2412 ret
= ctf_trace_metadata_read(td
, metadata_fp
, td
->scanner
, 1);
2415 /* for each stream_class */
2416 for (i
= 0; i
< td
->streams
->len
; i
++) {
2417 struct ctf_stream_declaration
*stream_class
;
2419 stream_class
= g_ptr_array_index(td
->streams
, i
);
2422 /* for each stream */
2423 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
2424 struct ctf_stream_definition
*stream
;
2426 stream
= g_ptr_array_index(stream_class
->streams
, j
);
2429 ret
= copy_event_declarations_stream_class_to_stream(td
,
2430 stream_class
, stream
);
2439 int ctf_convert_index_timestamp(struct bt_trace_descriptor
*tdp
)
2442 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
2444 /* for each stream_class */
2445 for (i
= 0; i
< td
->streams
->len
; i
++) {
2446 struct ctf_stream_declaration
*stream_class
;
2448 stream_class
= g_ptr_array_index(td
->streams
, i
);
2451 /* for each file_stream */
2452 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
2453 struct ctf_stream_definition
*stream
;
2454 struct ctf_stream_pos
*stream_pos
;
2455 struct ctf_file_stream
*cfs
;
2457 stream
= g_ptr_array_index(stream_class
->streams
, j
);
2460 cfs
= container_of(stream
, struct ctf_file_stream
,
2462 stream_pos
= &cfs
->pos
;
2463 if (!stream_pos
->packet_index
)
2466 for (k
= 0; k
< stream_pos
->packet_index
->len
; k
++) {
2467 struct packet_index
*index
;
2469 index
= &g_array_index(stream_pos
->packet_index
,
2470 struct packet_index
, k
);
2471 index
->ts_real
.timestamp_begin
=
2472 ctf_get_real_timestamp(stream
,
2473 index
->ts_cycles
.timestamp_begin
);
2474 index
->ts_real
.timestamp_end
=
2475 ctf_get_real_timestamp(stream
,
2476 index
->ts_cycles
.timestamp_end
);
2484 int ctf_close_file_stream(struct ctf_file_stream
*file_stream
)
2488 ret
= ctf_fini_pos(&file_stream
->pos
);
2490 fprintf(stderr
, "Error on ctf_fini_pos\n");
2493 if (file_stream
->pos
.fd
>= 0) {
2494 ret
= close(file_stream
->pos
.fd
);
2496 perror("Error closing file fd");
2504 int ctf_close_trace(struct bt_trace_descriptor
*tdp
)
2506 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
2512 for (i
= 0; i
< td
->streams
->len
; i
++) {
2513 struct ctf_stream_declaration
*stream
;
2516 stream
= g_ptr_array_index(td
->streams
, i
);
2519 for (j
= 0; j
< stream
->streams
->len
; j
++) {
2520 struct ctf_file_stream
*file_stream
;
2521 file_stream
= container_of(g_ptr_array_index(stream
->streams
, j
),
2522 struct ctf_file_stream
, parent
);
2523 ret
= ctf_close_file_stream(file_stream
);
2529 ctf_destroy_metadata(td
);
2530 ctf_scanner_free(td
->scanner
);
2531 if (td
->dirfd
>= 0) {
2532 ret
= close(td
->dirfd
);
2534 perror("Error closing dirfd");
2539 ret
= closedir(td
->dir
);
2541 perror("Error closedir");
2545 free(td
->metadata_string
);
2551 void ctf_set_context(struct bt_trace_descriptor
*descriptor
,
2552 struct bt_context
*ctx
)
2554 struct ctf_trace
*td
= container_of(descriptor
, struct ctf_trace
,
2557 td
->parent
.ctx
= ctx
;
2561 void ctf_set_handle(struct bt_trace_descriptor
*descriptor
,
2562 struct bt_trace_handle
*handle
)
2564 struct ctf_trace
*td
= container_of(descriptor
, struct ctf_trace
,
2567 td
->parent
.handle
= handle
;
2571 void __attribute__((constructor
)) ctf_init(void)
2575 ctf_format
.name
= g_quark_from_static_string("ctf");
2576 ret
= bt_register_format(&ctf_format
);
2581 void __attribute__((destructor
)) ctf_exit(void)
2583 bt_unregister_format(&ctf_format
);