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>
56 #include <babeltrace/compat/fcntl.h>
58 #define LOG2_CHAR_BIT 3
61 * Length of first attempt at mapping a packet header, in bits.
63 #define DEFAULT_HEADER_LEN (getpagesize() * CHAR_BIT)
66 * Lenght of packet to write, in bits.
68 #define WRITE_PACKET_LEN (getpagesize() * 8 * CHAR_BIT)
71 #define min(a, b) (((a) < (b)) ? (a) : (b))
74 #define NSEC_PER_SEC 1000000000ULL
76 #define INDEX_PATH "./index/%s.idx"
83 uint64_t opt_clock_offset
;
84 uint64_t opt_clock_offset_ns
;
89 * TODO: babeltrace_ctf_console_output ensures that we only print
90 * discarded events when ctf-text plugin is used. Should be cleaned up
91 * with the plugin system redesign.
93 int babeltrace_ctf_console_output
;
96 struct bt_trace_descriptor
*ctf_open_trace(const char *path
, int flags
,
97 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
101 struct bt_trace_descriptor
*ctf_open_mmap_trace(
102 struct bt_mmap_stream_list
*mmap_list
,
103 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
107 void ctf_set_context(struct bt_trace_descriptor
*descriptor
,
108 struct bt_context
*ctx
);
110 void ctf_set_handle(struct bt_trace_descriptor
*descriptor
,
111 struct bt_trace_handle
*handle
);
114 int ctf_close_trace(struct bt_trace_descriptor
*descriptor
);
116 uint64_t ctf_timestamp_begin(struct bt_trace_descriptor
*descriptor
,
117 struct bt_trace_handle
*handle
, enum bt_clock_type type
);
119 uint64_t ctf_timestamp_end(struct bt_trace_descriptor
*descriptor
,
120 struct bt_trace_handle
*handle
, enum bt_clock_type type
);
122 int ctf_convert_index_timestamp(struct bt_trace_descriptor
*tdp
);
125 rw_dispatch read_dispatch_table
[] = {
126 [ CTF_TYPE_INTEGER
] = ctf_integer_read
,
127 [ CTF_TYPE_FLOAT
] = ctf_float_read
,
128 [ CTF_TYPE_ENUM
] = ctf_enum_read
,
129 [ CTF_TYPE_STRING
] = ctf_string_read
,
130 [ CTF_TYPE_STRUCT
] = ctf_struct_rw
,
131 [ CTF_TYPE_VARIANT
] = ctf_variant_rw
,
132 [ CTF_TYPE_ARRAY
] = ctf_array_read
,
133 [ CTF_TYPE_SEQUENCE
] = ctf_sequence_read
,
137 rw_dispatch write_dispatch_table
[] = {
138 [ CTF_TYPE_INTEGER
] = ctf_integer_write
,
139 [ CTF_TYPE_FLOAT
] = ctf_float_write
,
140 [ CTF_TYPE_ENUM
] = ctf_enum_write
,
141 [ CTF_TYPE_STRING
] = ctf_string_write
,
142 [ CTF_TYPE_STRUCT
] = ctf_struct_rw
,
143 [ CTF_TYPE_VARIANT
] = ctf_variant_rw
,
144 [ CTF_TYPE_ARRAY
] = ctf_array_write
,
145 [ CTF_TYPE_SEQUENCE
] = ctf_sequence_write
,
149 struct bt_format ctf_format
= {
150 .open_trace
= ctf_open_trace
,
151 .open_mmap_trace
= ctf_open_mmap_trace
,
152 .close_trace
= ctf_close_trace
,
153 .set_context
= ctf_set_context
,
154 .set_handle
= ctf_set_handle
,
155 .timestamp_begin
= ctf_timestamp_begin
,
156 .timestamp_end
= ctf_timestamp_end
,
157 .convert_index_timestamp
= ctf_convert_index_timestamp
,
161 uint64_t ctf_timestamp_begin(struct bt_trace_descriptor
*descriptor
,
162 struct bt_trace_handle
*handle
, enum bt_clock_type type
)
164 struct ctf_trace
*tin
;
165 uint64_t begin
= ULLONG_MAX
;
168 tin
= container_of(descriptor
, struct ctf_trace
, parent
);
173 /* for each stream_class */
174 for (i
= 0; i
< tin
->streams
->len
; i
++) {
175 struct ctf_stream_declaration
*stream_class
;
177 stream_class
= g_ptr_array_index(tin
->streams
, i
);
180 /* for each file_stream */
181 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
182 struct ctf_stream_definition
*stream
;
183 struct ctf_file_stream
*cfs
;
184 struct ctf_stream_pos
*stream_pos
;
185 struct packet_index
*index
;
187 stream
= g_ptr_array_index(stream_class
->streams
, j
);
188 cfs
= container_of(stream
, struct ctf_file_stream
,
190 stream_pos
= &cfs
->pos
;
192 if (!stream_pos
->packet_index
)
195 if (stream_pos
->packet_index
->len
<= 0)
198 index
= &g_array_index(stream_pos
->packet_index
,
200 stream_pos
->packet_index
->len
- 1);
201 if (type
== BT_CLOCK_REAL
) {
202 if (index
->ts_real
.timestamp_begin
< begin
)
203 begin
= index
->ts_real
.timestamp_begin
;
204 } else if (type
== BT_CLOCK_CYCLES
) {
205 if (index
->ts_cycles
.timestamp_begin
< begin
)
206 begin
= index
->ts_cycles
.timestamp_begin
;
220 uint64_t ctf_timestamp_end(struct bt_trace_descriptor
*descriptor
,
221 struct bt_trace_handle
*handle
, enum bt_clock_type type
)
223 struct ctf_trace
*tin
;
227 tin
= container_of(descriptor
, struct ctf_trace
, parent
);
232 /* for each stream_class */
233 for (i
= 0; i
< tin
->streams
->len
; i
++) {
234 struct ctf_stream_declaration
*stream_class
;
236 stream_class
= g_ptr_array_index(tin
->streams
, i
);
239 /* for each file_stream */
240 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
241 struct ctf_stream_definition
*stream
;
242 struct ctf_file_stream
*cfs
;
243 struct ctf_stream_pos
*stream_pos
;
244 struct packet_index
*index
;
246 stream
= g_ptr_array_index(stream_class
->streams
, j
);
247 cfs
= container_of(stream
, struct ctf_file_stream
,
249 stream_pos
= &cfs
->pos
;
251 if (!stream_pos
->packet_index
)
254 if (stream_pos
->packet_index
->len
<= 0)
257 index
= &g_array_index(stream_pos
->packet_index
,
259 stream_pos
->packet_index
->len
- 1);
260 if (type
== BT_CLOCK_REAL
) {
261 if (index
->ts_real
.timestamp_end
> end
)
262 end
= index
->ts_real
.timestamp_end
;
263 } else if (type
== BT_CLOCK_CYCLES
) {
264 if (index
->ts_cycles
.timestamp_end
> end
)
265 end
= index
->ts_cycles
.timestamp_end
;
279 * Update stream current timestamp
282 void ctf_update_timestamp(struct ctf_stream_definition
*stream
,
283 struct definition_integer
*integer_definition
)
285 struct declaration_integer
*integer_declaration
=
286 integer_definition
->declaration
;
287 uint64_t oldval
, newval
, updateval
;
289 if (unlikely(integer_declaration
->len
== 64)) {
290 stream
->cycles_timestamp
= integer_definition
->value
._unsigned
;
291 stream
->real_timestamp
= ctf_get_real_timestamp(stream
,
292 stream
->cycles_timestamp
);
296 oldval
= stream
->cycles_timestamp
;
297 oldval
&= (1ULL << integer_declaration
->len
) - 1;
298 newval
= integer_definition
->value
._unsigned
;
299 /* Test for overflow by comparing low bits */
301 newval
+= 1ULL << integer_declaration
->len
;
302 /* updateval contains old high bits, and new low bits (sum) */
303 updateval
= stream
->cycles_timestamp
;
304 updateval
&= ~((1ULL << integer_declaration
->len
) - 1);
306 stream
->cycles_timestamp
= updateval
;
308 /* convert to real timestamp */
309 stream
->real_timestamp
= ctf_get_real_timestamp(stream
,
310 stream
->cycles_timestamp
);
314 * Print timestamp, rescaling clock frequency to nanoseconds and
315 * applying offsets as needed (unix time).
318 void ctf_print_timestamp_real(FILE *fp
,
319 struct ctf_stream_definition
*stream
,
322 uint64_t ts_sec
= 0, ts_nsec
;
326 /* Add command-line offset in ns*/
327 ts_nsec
+= opt_clock_offset_ns
;
329 /* Add command-line offset */
330 ts_sec
+= opt_clock_offset
;
332 ts_sec
+= ts_nsec
/ NSEC_PER_SEC
;
333 ts_nsec
= ts_nsec
% NSEC_PER_SEC
;
335 if (!opt_clock_seconds
) {
337 time_t time_s
= (time_t) ts_sec
;
339 if (!opt_clock_gmt
) {
342 res
= localtime_r(&time_s
, &tm
);
344 fprintf(stderr
, "[warning] Unable to get localtime.\n");
350 res
= gmtime_r(&time_s
, &tm
);
352 fprintf(stderr
, "[warning] Unable to get gmtime.\n");
356 if (opt_clock_date
) {
360 /* Print date and time */
361 res
= strftime(timestr
, sizeof(timestr
),
364 fprintf(stderr
, "[warning] Unable to print ascii time.\n");
367 fprintf(fp
, "%s", timestr
);
369 /* Print time in HH:MM:SS.ns */
370 fprintf(fp
, "%02d:%02d:%02d.%09" PRIu64
,
371 tm
.tm_hour
, tm
.tm_min
, tm
.tm_sec
, ts_nsec
);
375 fprintf(fp
, "%3" PRIu64
".%09" PRIu64
,
383 * Print timestamp, in cycles
386 void ctf_print_timestamp_cycles(FILE *fp
,
387 struct ctf_stream_definition
*stream
,
390 fprintf(fp
, "%020" PRIu64
, timestamp
);
393 void ctf_print_timestamp(FILE *fp
,
394 struct ctf_stream_definition
*stream
,
397 if (opt_clock_cycles
) {
398 ctf_print_timestamp_cycles(fp
, stream
, timestamp
);
400 ctf_print_timestamp_real(fp
, stream
, timestamp
);
405 void print_uuid(FILE *fp
, unsigned char *uuid
)
409 for (i
= 0; i
< BABELTRACE_UUID_LEN
; i
++)
410 fprintf(fp
, "%x", (unsigned int) uuid
[i
]);
414 * Discarded events can be either:
415 * - discarded after end of previous buffer due to buffer full:
416 * happened within range: [ prev_timestamp_end, timestamp_begin ]
417 * - discarded within current buffer due to either event too large or
418 * nested wrap-around:
419 * happened within range: [ timestamp_begin, timestamp_end ]
421 * Given we have discarded counters of those two types merged into the
422 * events_discarded counter, we need to use the union of those ranges:
423 * [ prev_timestamp_end, timestamp_end ]
426 void ctf_print_discarded(FILE *fp
, struct ctf_stream_definition
*stream
)
428 if (!stream
->events_discarded
|| !babeltrace_ctf_console_output
) {
432 fprintf(fp
, "[warning] Tracer discarded %" PRIu64
" events between [",
433 stream
->events_discarded
);
434 if (opt_clock_cycles
) {
435 ctf_print_timestamp(fp
, stream
,
436 stream
->prev
.cycles
.end
);
437 fprintf(fp
, "] and [");
438 ctf_print_timestamp(fp
, stream
,
439 stream
->current
.cycles
.end
);
441 ctf_print_timestamp(fp
, stream
,
442 stream
->prev
.real
.end
);
443 fprintf(fp
, "] and [");
444 ctf_print_timestamp(fp
, stream
,
445 stream
->current
.real
.end
);
447 fprintf(fp
, "] in trace UUID ");
448 print_uuid(fp
, stream
->stream_class
->trace
->uuid
);
449 if (stream
->stream_class
->trace
->parent
.path
[0])
450 fprintf(fp
, ", at path: \"%s\"",
451 stream
->stream_class
->trace
->parent
.path
);
453 fprintf(fp
, ", within stream id %" PRIu64
, stream
->stream_id
);
455 fprintf(fp
, ", at relative path: \"%s\"", stream
->path
);
457 fprintf(fp
, "You should consider recording a new trace with larger "
458 "buffers or with fewer events enabled.\n");
463 int ctf_read_event(struct bt_stream_pos
*ppos
, struct ctf_stream_definition
*stream
)
465 struct ctf_stream_pos
*pos
=
466 container_of(ppos
, struct ctf_stream_pos
, parent
);
467 struct ctf_stream_declaration
*stream_class
= stream
->stream_class
;
468 struct ctf_event_definition
*event
;
472 /* We need to check for EOF here for empty files. */
473 if (unlikely(pos
->offset
== EOF
))
476 ctf_pos_get_event(pos
);
478 /* save the current position as a restore point */
479 pos
->last_offset
= pos
->offset
;
482 * This is the EOF check after we've advanced the position in
485 if (unlikely(pos
->offset
== EOF
))
488 /* Stream is inactive for now (live reading). */
489 if (unlikely(pos
->content_size
== 0))
493 * Packet seeked to by ctf_pos_get_event() only contains
494 * headers, no event. Consider stream as inactive (live
497 if (unlikely(pos
->data_offset
== pos
->content_size
))
500 assert(pos
->offset
< pos
->content_size
);
502 /* Read event header */
503 if (likely(stream
->stream_event_header
)) {
504 struct definition_integer
*integer_definition
;
505 struct bt_definition
*variant
;
507 ret
= generic_rw(ppos
, &stream
->stream_event_header
->p
);
510 /* lookup event id */
511 integer_definition
= bt_lookup_integer(&stream
->stream_event_header
->p
, "id", FALSE
);
512 if (integer_definition
) {
513 id
= integer_definition
->value
._unsigned
;
515 struct definition_enum
*enum_definition
;
517 enum_definition
= bt_lookup_enum(&stream
->stream_event_header
->p
, "id", FALSE
);
518 if (enum_definition
) {
519 id
= enum_definition
->integer
->value
._unsigned
;
523 variant
= bt_lookup_variant(&stream
->stream_event_header
->p
, "v");
525 integer_definition
= bt_lookup_integer(variant
, "id", FALSE
);
526 if (integer_definition
) {
527 id
= integer_definition
->value
._unsigned
;
530 stream
->event_id
= id
;
532 /* lookup timestamp */
533 stream
->has_timestamp
= 0;
534 integer_definition
= bt_lookup_integer(&stream
->stream_event_header
->p
, "timestamp", FALSE
);
535 if (integer_definition
) {
536 ctf_update_timestamp(stream
, integer_definition
);
537 stream
->has_timestamp
= 1;
540 integer_definition
= bt_lookup_integer(variant
, "timestamp", FALSE
);
541 if (integer_definition
) {
542 ctf_update_timestamp(stream
, integer_definition
);
543 stream
->has_timestamp
= 1;
549 /* Read stream-declared event context */
550 if (stream
->stream_event_context
) {
551 ret
= generic_rw(ppos
, &stream
->stream_event_context
->p
);
556 if (unlikely(id
>= stream_class
->events_by_id
->len
)) {
557 fprintf(stderr
, "[error] Event id %" PRIu64
" is outside range.\n", id
);
560 event
= g_ptr_array_index(stream
->events_by_id
, id
);
561 if (unlikely(!event
)) {
562 fprintf(stderr
, "[error] Event id %" PRIu64
" is unknown.\n", id
);
566 /* Read event-declared event context */
567 if (event
->event_context
) {
568 ret
= generic_rw(ppos
, &event
->event_context
->p
);
573 /* Read event payload */
574 if (likely(event
->event_fields
)) {
575 ret
= generic_rw(ppos
, &event
->event_fields
->p
);
580 if (pos
->last_offset
== pos
->offset
) {
581 fprintf(stderr
, "[error] Invalid 0 byte event encountered.\n");
588 fprintf(stderr
, "[error] Unexpected end of packet. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
593 int ctf_write_event(struct bt_stream_pos
*pos
, struct ctf_stream_definition
*stream
)
595 struct ctf_stream_declaration
*stream_class
= stream
->stream_class
;
596 struct ctf_event_definition
*event
;
600 id
= stream
->event_id
;
602 /* print event header */
603 if (likely(stream
->stream_event_header
)) {
604 ret
= generic_rw(pos
, &stream
->stream_event_header
->p
);
609 /* print stream-declared event context */
610 if (stream
->stream_event_context
) {
611 ret
= generic_rw(pos
, &stream
->stream_event_context
->p
);
616 if (unlikely(id
>= stream_class
->events_by_id
->len
)) {
617 fprintf(stderr
, "[error] Event id %" PRIu64
" is outside range.\n", id
);
620 event
= g_ptr_array_index(stream
->events_by_id
, id
);
621 if (unlikely(!event
)) {
622 fprintf(stderr
, "[error] Event id %" PRIu64
" is unknown.\n", id
);
626 /* print event-declared event context */
627 if (event
->event_context
) {
628 ret
= generic_rw(pos
, &event
->event_context
->p
);
633 /* Read and print event payload */
634 if (likely(event
->event_fields
)) {
635 ret
= generic_rw(pos
, &event
->event_fields
->p
);
643 fprintf(stderr
, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
648 * One side-effect of this function is to unmap pos mmap base if one is
652 int find_data_offset(struct ctf_stream_pos
*pos
,
653 struct ctf_file_stream
*file_stream
,
654 struct packet_index
*packet_index
)
656 uint64_t packet_map_len
= DEFAULT_HEADER_LEN
, tmp_map_len
;
657 struct stat filestats
;
661 pos
= &file_stream
->pos
;
663 ret
= fstat(pos
->fd
, &filestats
);
666 filesize
= filestats
.st_size
;
668 /* Deal with empty files */
674 if (filesize
- pos
->mmap_offset
< (packet_map_len
>> LOG2_CHAR_BIT
)) {
675 packet_map_len
= (filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
;
680 ret
= munmap_align(pos
->base_mma
);
682 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
686 pos
->base_mma
= NULL
;
688 /* map new base. Need mapping length from header. */
689 pos
->base_mma
= mmap_align(packet_map_len
>> LOG2_CHAR_BIT
, PROT_READ
,
690 MAP_PRIVATE
, pos
->fd
, pos
->mmap_offset
);
691 assert(pos
->base_mma
!= MAP_FAILED
);
693 pos
->content_size
= packet_map_len
;
694 pos
->packet_size
= packet_map_len
;
695 pos
->offset
= 0; /* Position of the packet header */
697 /* update trace_packet_header and stream_packet_context */
698 if (pos
->prot
== PROT_READ
&& file_stream
->parent
.trace_packet_header
) {
699 /* Read packet header */
700 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
706 if (pos
->prot
== PROT_READ
&& file_stream
->parent
.stream_packet_context
) {
707 /* Read packet context */
708 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
714 packet_index
->data_offset
= pos
->offset
;
717 ret
= munmap_align(pos
->base_mma
);
719 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
723 pos
->base_mma
= NULL
;
727 /* Retry with larger mapping */
729 if (packet_map_len
== ((filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
)) {
731 * Reached EOF, but still expecting header/context data.
733 fprintf(stderr
, "[error] Reached end of file, but still expecting header or context fields.\n");
736 /* Double the mapping len, and retry */
737 tmp_map_len
= packet_map_len
<< 1;
738 if (tmp_map_len
>> 1 != packet_map_len
) {
740 fprintf(stderr
, "[error] Packet mapping length overflow\n");
743 packet_map_len
= tmp_map_len
;
748 int ctf_init_pos(struct ctf_stream_pos
*pos
, struct bt_trace_descriptor
*trace
,
749 int fd
, int open_flags
)
753 pos
->packet_index
= g_array_new(FALSE
, TRUE
,
754 sizeof(struct packet_index
));
756 pos
->packet_index
= NULL
;
758 switch (open_flags
& O_ACCMODE
) {
760 pos
->prot
= PROT_READ
;
761 pos
->flags
= MAP_PRIVATE
;
762 pos
->parent
.rw_table
= read_dispatch_table
;
763 pos
->parent
.event_cb
= ctf_read_event
;
764 pos
->parent
.trace
= trace
;
767 pos
->prot
= PROT_READ
| PROT_WRITE
;
768 pos
->flags
= MAP_SHARED
;
769 pos
->parent
.rw_table
= write_dispatch_table
;
770 pos
->parent
.event_cb
= ctf_write_event
;
771 pos
->parent
.trace
= trace
;
779 int ctf_fini_pos(struct ctf_stream_pos
*pos
)
781 if ((pos
->prot
& PROT_WRITE
) && pos
->content_size_loc
)
782 *pos
->content_size_loc
= pos
->offset
;
787 ret
= munmap_align(pos
->base_mma
);
789 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
794 if (pos
->packet_index
)
795 (void) g_array_free(pos
->packet_index
, TRUE
);
799 void ctf_update_current_packet_index(struct ctf_stream_definition
*stream
,
800 struct packet_index
*prev_index
,
801 struct packet_index
*cur_index
)
803 uint64_t events_discarded_diff
;
805 /* Update packet index time information */
807 /* Current packet begin/end */
808 stream
->current
.real
.begin
=
809 cur_index
->ts_real
.timestamp_begin
;
810 stream
->current
.cycles
.begin
=
811 cur_index
->ts_cycles
.timestamp_begin
;
812 stream
->current
.real
.end
=
813 cur_index
->ts_real
.timestamp_end
;
814 stream
->current
.cycles
.end
=
815 cur_index
->ts_cycles
.timestamp_end
;
817 /* Update packet index discarded event information */
818 events_discarded_diff
= cur_index
->events_discarded
;
820 /* Previous packet begin/end */
821 stream
->prev
.cycles
.begin
=
822 prev_index
->ts_cycles
.timestamp_begin
;
823 stream
->prev
.real
.begin
=
824 prev_index
->ts_real
.timestamp_begin
;
825 stream
->prev
.cycles
.end
=
826 prev_index
->ts_cycles
.timestamp_end
;
827 stream
->prev
.real
.end
=
828 prev_index
->ts_real
.timestamp_end
;
830 events_discarded_diff
-= prev_index
->events_discarded
;
832 * Deal with 32-bit wrap-around if the tracer provided a
835 if (prev_index
->events_discarded_len
== 32) {
836 events_discarded_diff
= (uint32_t) events_discarded_diff
;
840 * First packet: use current packet info as limits for
843 stream
->prev
.cycles
.begin
=
844 stream
->prev
.cycles
.end
=
845 stream
->current
.cycles
.begin
;
846 stream
->prev
.real
.begin
=
847 stream
->prev
.real
.end
=
848 stream
->current
.real
.begin
;
850 stream
->events_discarded
= events_discarded_diff
;
854 * for SEEK_CUR: go to next packet.
855 * for SEEK_SET: go to packet numer (index).
857 void ctf_packet_seek(struct bt_stream_pos
*stream_pos
, size_t index
, int whence
)
859 struct ctf_stream_pos
*pos
=
860 container_of(stream_pos
, struct ctf_stream_pos
, parent
);
861 struct ctf_file_stream
*file_stream
=
862 container_of(pos
, struct ctf_file_stream
, pos
);
865 struct packet_index
*packet_index
, *prev_index
;
869 case SEEK_SET
: /* Fall-through */
875 if ((pos
->prot
& PROT_WRITE
) && pos
->content_size_loc
)
876 *pos
->content_size_loc
= pos
->offset
;
880 ret
= munmap_align(pos
->base_mma
);
882 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
886 pos
->base_mma
= NULL
;
890 * The caller should never ask for ctf_move_pos across packets,
891 * except to get exactly at the beginning of the next packet.
893 if (pos
->prot
& PROT_WRITE
) {
896 /* The writer will add padding */
897 pos
->mmap_offset
+= pos
->packet_size
/ CHAR_BIT
;
900 assert(index
== 0); /* only seek supported for now */
906 pos
->content_size
= -1U; /* Unknown at this point */
907 pos
->packet_size
= WRITE_PACKET_LEN
;
908 off
= bt_posix_fallocate(pos
->fd
, pos
->mmap_offset
,
909 pos
->packet_size
/ CHAR_BIT
);
917 if (pos
->offset
== EOF
) {
920 assert(pos
->cur_index
< pos
->packet_index
->len
);
921 /* The reader will expect us to skip padding */
926 if (index
>= pos
->packet_index
->len
) {
930 pos
->cur_index
= index
;
936 packet_index
= &g_array_index(pos
->packet_index
,
937 struct packet_index
, pos
->cur_index
);
938 if (pos
->cur_index
> 0) {
939 prev_index
= &g_array_index(pos
->packet_index
,
945 ctf_update_current_packet_index(&file_stream
->parent
,
946 prev_index
, packet_index
);
948 if (pos
->cur_index
>= pos
->packet_index
->len
) {
954 * We need to check if we are in trace read or called
955 * from packet indexing. In this last case, the
956 * collection is not there, so we cannot print the
959 if ((&file_stream
->parent
)->stream_class
->trace
->parent
.collection
) {
960 ctf_print_discarded(stderr
, &file_stream
->parent
);
963 packet_index
= &g_array_index(pos
->packet_index
,
966 file_stream
->parent
.cycles_timestamp
= packet_index
->ts_cycles
.timestamp_begin
;
968 file_stream
->parent
.real_timestamp
= packet_index
->ts_real
.timestamp_begin
;
970 /* Lookup context/packet size in index */
971 if (packet_index
->data_offset
== -1) {
972 ret
= find_data_offset(pos
, file_stream
, packet_index
);
977 pos
->content_size
= packet_index
->content_size
;
978 pos
->packet_size
= packet_index
->packet_size
;
979 pos
->mmap_offset
= packet_index
->offset
;
980 pos
->data_offset
= packet_index
->data_offset
;
981 if (pos
->data_offset
< packet_index
->content_size
) {
982 pos
->offset
= 0; /* will read headers */
983 } else if (pos
->data_offset
== packet_index
->content_size
) {
985 pos
->offset
= packet_index
->data_offset
;
987 goto read_next_packet
;
993 /* map new base. Need mapping length from header. */
994 pos
->base_mma
= mmap_align(pos
->packet_size
/ CHAR_BIT
, pos
->prot
,
995 pos
->flags
, pos
->fd
, pos
->mmap_offset
);
996 if (pos
->base_mma
== MAP_FAILED
) {
997 fprintf(stderr
, "[error] mmap error %s.\n",
1002 /* update trace_packet_header and stream_packet_context */
1003 if (!(pos
->prot
& PROT_WRITE
) &&
1004 file_stream
->parent
.trace_packet_header
) {
1005 /* Read packet header */
1006 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
1009 if (!(pos
->prot
& PROT_WRITE
) &&
1010 file_stream
->parent
.stream_packet_context
) {
1011 /* Read packet context */
1012 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
1018 int packet_metadata(struct ctf_trace
*td
, FILE *fp
)
1024 len
= fread(&magic
, sizeof(magic
), 1, fp
);
1028 if (magic
== TSDL_MAGIC
) {
1030 td
->byte_order
= BYTE_ORDER
;
1031 CTF_TRACE_SET_FIELD(td
, byte_order
);
1032 } else if (magic
== GUINT32_SWAP_LE_BE(TSDL_MAGIC
)) {
1034 td
->byte_order
= (BYTE_ORDER
== BIG_ENDIAN
) ?
1035 LITTLE_ENDIAN
: BIG_ENDIAN
;
1036 CTF_TRACE_SET_FIELD(td
, byte_order
);
1044 * Returns 0 on success, -1 on error.
1047 int check_version(unsigned int major
, unsigned int minor
)
1062 /* eventually return an error instead of warning */
1064 fprintf(stderr
, "[warning] Unsupported CTF specification version %u.%u. Trying anyway.\n",
1070 int ctf_trace_metadata_packet_read(struct ctf_trace
*td
, FILE *in
,
1073 struct metadata_packet_header header
;
1074 size_t readlen
, writelen
, toread
;
1075 char buf
[4096 + 1]; /* + 1 for debug-mode \0 */
1078 readlen
= fread(&header
, header_sizeof(header
), 1, in
);
1082 if (td
->byte_order
!= BYTE_ORDER
) {
1083 header
.magic
= GUINT32_SWAP_LE_BE(header
.magic
);
1084 header
.checksum
= GUINT32_SWAP_LE_BE(header
.checksum
);
1085 header
.content_size
= GUINT32_SWAP_LE_BE(header
.content_size
);
1086 header
.packet_size
= GUINT32_SWAP_LE_BE(header
.packet_size
);
1088 if (header
.checksum
)
1089 fprintf(stderr
, "[warning] checksum verification not supported yet.\n");
1090 if (header
.compression_scheme
) {
1091 fprintf(stderr
, "[error] compression (%u) not supported yet.\n",
1092 header
.compression_scheme
);
1095 if (header
.encryption_scheme
) {
1096 fprintf(stderr
, "[error] encryption (%u) not supported yet.\n",
1097 header
.encryption_scheme
);
1100 if (header
.checksum_scheme
) {
1101 fprintf(stderr
, "[error] checksum (%u) not supported yet.\n",
1102 header
.checksum_scheme
);
1105 if (check_version(header
.major
, header
.minor
) < 0)
1107 if (!CTF_TRACE_FIELD_IS_SET(td
, uuid
)) {
1108 memcpy(td
->uuid
, header
.uuid
, sizeof(header
.uuid
));
1109 CTF_TRACE_SET_FIELD(td
, uuid
);
1111 if (bt_uuid_compare(header
.uuid
, td
->uuid
))
1115 if ((header
.content_size
/ CHAR_BIT
) < header_sizeof(header
))
1118 toread
= (header
.content_size
/ CHAR_BIT
) - header_sizeof(header
);
1121 readlen
= fread(buf
, sizeof(char), min(sizeof(buf
) - 1, toread
), in
);
1126 if (babeltrace_debug
) {
1127 buf
[readlen
] = '\0';
1128 fprintf(stderr
, "[debug] metadata packet read: %s\n",
1132 writelen
= fwrite(buf
, sizeof(char), readlen
, out
);
1133 if (writelen
< readlen
) {
1143 ret
= 0; /* continue reading next packet */
1150 toread
= (header
.packet_size
- header
.content_size
) / CHAR_BIT
;
1151 ret
= fseek(in
, toread
, SEEK_CUR
);
1153 fprintf(stderr
, "[warning] Missing padding at end of file\n");
1160 int ctf_trace_metadata_stream_read(struct ctf_trace
*td
, FILE **fp
,
1164 size_t size
, buflen
;
1169 * Using strlen on *buf instead of size of open_memstream
1170 * because its size includes garbage at the end (after final
1171 * \0). This is the allocated size, not the actual string size.
1173 out
= babeltrace_open_memstream(buf
, &size
);
1175 perror("Metadata open_memstream");
1179 ret
= ctf_trace_metadata_packet_read(td
, in
, out
);
1188 /* close to flush the buffer */
1189 ret
= babeltrace_close_memstream(buf
, &size
, out
);
1193 perror("babeltrace_flush_memstream");
1195 closeret
= fclose(in
);
1197 perror("Error in fclose");
1203 perror("Error in fclose");
1205 /* open for reading */
1206 buflen
= strlen(*buf
);
1211 *fp
= babeltrace_fmemopen(*buf
, buflen
, "rb");
1213 perror("Metadata fmemopen");
1220 int ctf_trace_metadata_read(struct ctf_trace
*td
, FILE *metadata_fp
,
1221 struct ctf_scanner
*scanner
, int append
)
1223 struct ctf_file_stream
*metadata_stream
;
1226 int ret
= 0, closeret
;
1228 metadata_stream
= g_new0(struct ctf_file_stream
, 1);
1229 metadata_stream
->pos
.last_offset
= LAST_OFFSET_POISON
;
1233 metadata_stream
->pos
.fd
= -1;
1235 td
->metadata
= &metadata_stream
->parent
;
1236 metadata_stream
->pos
.fd
= openat(td
->dirfd
, "metadata", O_RDONLY
);
1237 if (metadata_stream
->pos
.fd
< 0) {
1238 fprintf(stderr
, "Unable to open metadata.\n");
1243 fp
= fdopen(metadata_stream
->pos
.fd
, "r");
1245 fprintf(stderr
, "[error] Unable to open metadata stream.\n");
1246 perror("Metadata stream open");
1250 /* fd now belongs to fp */
1251 metadata_stream
->pos
.fd
= -1;
1253 if (babeltrace_debug
)
1256 if (packet_metadata(td
, fp
)) {
1257 ret
= ctf_trace_metadata_stream_read(td
, &fp
, &buf
);
1261 td
->metadata_string
= buf
;
1262 td
->metadata_packetized
= 1;
1265 unsigned int major
, minor
;
1268 td
->byte_order
= BYTE_ORDER
;
1270 /* Check text-only metadata header and version */
1271 nr_items
= fscanf(fp
, "/* CTF %10u.%10u", &major
, &minor
);
1273 fprintf(stderr
, "[warning] Ill-shapen or missing \"/* CTF x.y\" header for text-only metadata.\n");
1274 if (check_version(major
, minor
) < 0) {
1282 ret
= ctf_scanner_append_ast(scanner
, fp
);
1284 fprintf(stderr
, "[error] Error creating AST\n");
1288 if (babeltrace_debug
) {
1289 ret
= ctf_visitor_print_xml(stderr
, 0, &scanner
->ast
->root
);
1291 fprintf(stderr
, "[error] Error visiting AST for XML output\n");
1296 ret
= ctf_visitor_semantic_check(stderr
, 0, &scanner
->ast
->root
);
1298 fprintf(stderr
, "[error] Error in CTF semantic validation %d\n", ret
);
1301 ret
= ctf_visitor_construct_metadata(stderr
, 0, &scanner
->ast
->root
,
1302 td
, td
->byte_order
);
1304 fprintf(stderr
, "[error] Error in CTF metadata constructor %d\n", ret
);
1309 closeret
= fclose(fp
);
1311 perror("Error on fclose");
1315 if (metadata_stream
->pos
.fd
>= 0) {
1316 closeret
= close(metadata_stream
->pos
.fd
);
1318 perror("Error on metadata stream fd close");
1323 g_free(metadata_stream
);
1328 struct ctf_event_definition
*create_event_definitions(struct ctf_trace
*td
,
1329 struct ctf_stream_definition
*stream
,
1330 struct ctf_event_declaration
*event
)
1332 struct ctf_event_definition
*stream_event
= g_new0(struct ctf_event_definition
, 1);
1334 if (event
->context_decl
) {
1335 struct bt_definition
*definition
=
1336 event
->context_decl
->p
.definition_new(&event
->context_decl
->p
,
1337 stream
->parent_def_scope
, 0, 0, "event.context");
1341 stream_event
->event_context
= container_of(definition
,
1342 struct definition_struct
, p
);
1343 stream
->parent_def_scope
= stream_event
->event_context
->p
.scope
;
1345 if (event
->fields_decl
) {
1346 struct bt_definition
*definition
=
1347 event
->fields_decl
->p
.definition_new(&event
->fields_decl
->p
,
1348 stream
->parent_def_scope
, 0, 0, "event.fields");
1352 stream_event
->event_fields
= container_of(definition
,
1353 struct definition_struct
, p
);
1354 stream
->parent_def_scope
= stream_event
->event_fields
->p
.scope
;
1356 stream_event
->stream
= stream
;
1357 return stream_event
;
1360 if (stream_event
->event_fields
)
1361 bt_definition_unref(&stream_event
->event_fields
->p
);
1362 if (stream_event
->event_context
)
1363 bt_definition_unref(&stream_event
->event_context
->p
);
1364 fprintf(stderr
, "[error] Unable to create event definition for event \"%s\".\n",
1365 g_quark_to_string(event
->name
));
1370 int copy_event_declarations_stream_class_to_stream(struct ctf_trace
*td
,
1371 struct ctf_stream_declaration
*stream_class
,
1372 struct ctf_stream_definition
*stream
)
1374 size_t def_size
, class_size
, i
;
1377 def_size
= stream
->events_by_id
->len
;
1378 class_size
= stream_class
->events_by_id
->len
;
1380 g_ptr_array_set_size(stream
->events_by_id
, class_size
);
1381 for (i
= def_size
; i
< class_size
; i
++) {
1382 struct ctf_event_declaration
*event
=
1383 g_ptr_array_index(stream_class
->events_by_id
, i
);
1384 struct ctf_event_definition
*stream_event
;
1388 stream_event
= create_event_definitions(td
, stream
, event
);
1389 if (!stream_event
) {
1393 g_ptr_array_index(stream
->events_by_id
, i
) = stream_event
;
1400 int create_stream_definitions(struct ctf_trace
*td
, struct ctf_stream_definition
*stream
)
1402 struct ctf_stream_declaration
*stream_class
;
1406 if (stream
->stream_definitions_created
)
1409 stream_class
= stream
->stream_class
;
1411 if (stream_class
->packet_context_decl
) {
1412 struct bt_definition
*definition
=
1413 stream_class
->packet_context_decl
->p
.definition_new(&stream_class
->packet_context_decl
->p
,
1414 stream
->parent_def_scope
, 0, 0, "stream.packet.context");
1419 stream
->stream_packet_context
= container_of(definition
,
1420 struct definition_struct
, p
);
1421 stream
->parent_def_scope
= stream
->stream_packet_context
->p
.scope
;
1423 if (stream_class
->event_header_decl
) {
1424 struct bt_definition
*definition
=
1425 stream_class
->event_header_decl
->p
.definition_new(&stream_class
->event_header_decl
->p
,
1426 stream
->parent_def_scope
, 0, 0, "stream.event.header");
1431 stream
->stream_event_header
=
1432 container_of(definition
, struct definition_struct
, p
);
1433 stream
->parent_def_scope
= stream
->stream_event_header
->p
.scope
;
1435 if (stream_class
->event_context_decl
) {
1436 struct bt_definition
*definition
=
1437 stream_class
->event_context_decl
->p
.definition_new(&stream_class
->event_context_decl
->p
,
1438 stream
->parent_def_scope
, 0, 0, "stream.event.context");
1443 stream
->stream_event_context
=
1444 container_of(definition
, struct definition_struct
, p
);
1445 stream
->parent_def_scope
= stream
->stream_event_context
->p
.scope
;
1447 stream
->events_by_id
= g_ptr_array_new();
1448 ret
= copy_event_declarations_stream_class_to_stream(td
,
1449 stream_class
, stream
);
1455 for (i
= 0; i
< stream
->events_by_id
->len
; i
++) {
1456 struct ctf_event_definition
*stream_event
= g_ptr_array_index(stream
->events_by_id
, i
);
1458 g_free(stream_event
);
1460 g_ptr_array_free(stream
->events_by_id
, TRUE
);
1462 if (stream
->stream_event_context
)
1463 bt_definition_unref(&stream
->stream_event_context
->p
);
1464 if (stream
->stream_event_header
)
1465 bt_definition_unref(&stream
->stream_event_header
->p
);
1466 if (stream
->stream_packet_context
)
1467 bt_definition_unref(&stream
->stream_packet_context
->p
);
1468 fprintf(stderr
, "[error] Unable to create stream (%" PRIu64
") definitions: %s\n",
1469 stream_class
->stream_id
, strerror(-ret
));
1474 int stream_assign_class(struct ctf_trace
*td
,
1475 struct ctf_file_stream
*file_stream
,
1478 struct ctf_stream_declaration
*stream
;
1481 file_stream
->parent
.stream_id
= stream_id
;
1482 if (stream_id
>= td
->streams
->len
) {
1483 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared in metadata.\n", stream_id
);
1486 stream
= g_ptr_array_index(td
->streams
, stream_id
);
1488 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared in metadata.\n", stream_id
);
1491 file_stream
->parent
.stream_class
= stream
;
1492 ret
= create_stream_definitions(td
, &file_stream
->parent
);
1499 int create_stream_one_packet_index(struct ctf_stream_pos
*pos
,
1500 struct ctf_trace
*td
,
1501 struct ctf_file_stream
*file_stream
,
1504 struct packet_index packet_index
;
1505 uint64_t stream_id
= 0;
1506 uint64_t packet_map_len
= DEFAULT_HEADER_LEN
, tmp_map_len
;
1507 int first_packet
= 0;
1512 if (!pos
->mmap_offset
) {
1516 if (filesize
- pos
->mmap_offset
< (packet_map_len
>> LOG2_CHAR_BIT
)) {
1517 packet_map_len
= (filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
;
1520 if (pos
->base_mma
) {
1521 /* unmap old base */
1522 ret
= munmap_align(pos
->base_mma
);
1524 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
1528 pos
->base_mma
= NULL
;
1530 /* map new base. Need mapping length from header. */
1531 pos
->base_mma
= mmap_align(packet_map_len
>> LOG2_CHAR_BIT
, PROT_READ
,
1532 MAP_PRIVATE
, pos
->fd
, pos
->mmap_offset
);
1533 assert(pos
->base_mma
!= MAP_FAILED
);
1535 * Use current mapping size as temporary content and packet
1538 pos
->content_size
= packet_map_len
;
1539 pos
->packet_size
= packet_map_len
;
1540 pos
->offset
= 0; /* Position of the packet header */
1542 packet_index
.offset
= pos
->mmap_offset
;
1543 packet_index
.content_size
= 0;
1544 packet_index
.packet_size
= 0;
1545 packet_index
.ts_real
.timestamp_begin
= 0;
1546 packet_index
.ts_real
.timestamp_end
= 0;
1547 packet_index
.ts_cycles
.timestamp_begin
= 0;
1548 packet_index
.ts_cycles
.timestamp_end
= 0;
1549 packet_index
.events_discarded
= 0;
1550 packet_index
.events_discarded_len
= 0;
1552 /* read and check header, set stream id (and check) */
1553 if (file_stream
->parent
.trace_packet_header
) {
1554 /* Read packet header */
1555 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
1559 fprintf(stderr
, "[error] Unable to read packet header: %s\n", strerror(-ret
));
1562 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("magic"));
1563 if (len_index
>= 0) {
1564 struct bt_definition
*field
;
1567 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1568 magic
= bt_get_unsigned_int(field
);
1569 if (magic
!= CTF_MAGIC
) {
1570 fprintf(stderr
, "[error] Invalid magic number 0x%" PRIX64
" at packet %u (file offset %zd).\n",
1572 file_stream
->pos
.packet_index
->len
,
1573 (ssize_t
) pos
->mmap_offset
);
1579 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("uuid"));
1580 if (len_index
>= 0) {
1581 struct definition_array
*defarray
;
1582 struct bt_definition
*field
;
1584 uint8_t uuidval
[BABELTRACE_UUID_LEN
];
1586 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1587 assert(field
->declaration
->id
== CTF_TYPE_ARRAY
);
1588 defarray
= container_of(field
, struct definition_array
, p
);
1589 assert(bt_array_len(defarray
) == BABELTRACE_UUID_LEN
);
1591 for (i
= 0; i
< BABELTRACE_UUID_LEN
; i
++) {
1592 struct bt_definition
*elem
;
1594 elem
= bt_array_index(defarray
, i
);
1595 uuidval
[i
] = bt_get_unsigned_int(elem
);
1597 ret
= bt_uuid_compare(td
->uuid
, uuidval
);
1599 fprintf(stderr
, "[error] Unique Universal Identifiers do not match.\n");
1604 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("stream_id"));
1605 if (len_index
>= 0) {
1606 struct bt_definition
*field
;
1608 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1609 stream_id
= bt_get_unsigned_int(field
);
1613 if (!first_packet
&& file_stream
->parent
.stream_id
!= stream_id
) {
1614 fprintf(stderr
, "[error] Stream ID is changing within a stream: expecting %" PRIu64
", but packet has %" PRIu64
"\n",
1616 file_stream
->parent
.stream_id
);
1620 ret
= stream_assign_class(td
, file_stream
, stream_id
);
1625 if (file_stream
->parent
.stream_packet_context
) {
1626 /* Read packet context */
1627 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
1631 fprintf(stderr
, "[error] Unable to read packet context: %s\n", strerror(-ret
));
1634 /* read packet size from header */
1635 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("packet_size"));
1636 if (len_index
>= 0) {
1637 struct bt_definition
*field
;
1639 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1640 packet_index
.packet_size
= bt_get_unsigned_int(field
);
1642 /* Use file size for packet size */
1643 packet_index
.packet_size
= filesize
* CHAR_BIT
;
1646 /* read content size from header */
1647 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("content_size"));
1648 if (len_index
>= 0) {
1649 struct bt_definition
*field
;
1651 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1652 packet_index
.content_size
= bt_get_unsigned_int(field
);
1654 /* Use packet size if non-zero, else file size */
1655 packet_index
.content_size
= packet_index
.packet_size
? : filesize
* CHAR_BIT
;
1658 /* read timestamp begin from header */
1659 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("timestamp_begin"));
1660 if (len_index
>= 0) {
1661 struct bt_definition
*field
;
1663 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1664 packet_index
.ts_cycles
.timestamp_begin
= bt_get_unsigned_int(field
);
1665 if (file_stream
->parent
.stream_class
->trace
->parent
.collection
) {
1666 packet_index
.ts_real
.timestamp_begin
=
1667 ctf_get_real_timestamp(
1668 &file_stream
->parent
,
1669 packet_index
.ts_cycles
.timestamp_begin
);
1673 /* read timestamp end from header */
1674 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("timestamp_end"));
1675 if (len_index
>= 0) {
1676 struct bt_definition
*field
;
1678 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1679 packet_index
.ts_cycles
.timestamp_end
= bt_get_unsigned_int(field
);
1680 if (file_stream
->parent
.stream_class
->trace
->parent
.collection
) {
1681 packet_index
.ts_real
.timestamp_end
=
1682 ctf_get_real_timestamp(
1683 &file_stream
->parent
,
1684 packet_index
.ts_cycles
.timestamp_end
);
1688 /* read events discarded from header */
1689 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("events_discarded"));
1690 if (len_index
>= 0) {
1691 struct bt_definition
*field
;
1693 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1694 packet_index
.events_discarded
= bt_get_unsigned_int(field
);
1695 packet_index
.events_discarded_len
= bt_get_int_len(field
);
1698 /* Use file size for packet size */
1699 packet_index
.packet_size
= filesize
* CHAR_BIT
;
1700 /* Use packet size if non-zero, else file size */
1701 packet_index
.content_size
= packet_index
.packet_size
? : filesize
* CHAR_BIT
;
1704 /* Validate content size and packet size values */
1705 if (packet_index
.content_size
> packet_index
.packet_size
) {
1706 fprintf(stderr
, "[error] Content size (%" PRIu64
" bits) is larger than packet size (%" PRIu64
" bits).\n",
1707 packet_index
.content_size
, packet_index
.packet_size
);
1711 if (packet_index
.packet_size
> ((uint64_t) filesize
- packet_index
.offset
) * CHAR_BIT
) {
1712 fprintf(stderr
, "[error] Packet size (%" PRIu64
" bits) is larger than remaining file size (%" PRIu64
" bits).\n",
1713 packet_index
.packet_size
, ((uint64_t) filesize
- packet_index
.offset
) * CHAR_BIT
);
1717 if (packet_index
.content_size
< pos
->offset
) {
1718 fprintf(stderr
, "[error] Invalid CTF stream: content size is smaller than packet headers.\n");
1722 if ((packet_index
.packet_size
>> LOG2_CHAR_BIT
) == 0) {
1723 fprintf(stderr
, "[error] Invalid CTF stream: packet size needs to be at least one byte\n");
1727 /* Save position after header and context */
1728 packet_index
.data_offset
= pos
->offset
;
1730 /* add index to packet array */
1731 g_array_append_val(file_stream
->pos
.packet_index
, packet_index
);
1733 pos
->mmap_offset
+= packet_index
.packet_size
>> LOG2_CHAR_BIT
;
1737 /* Retry with larger mapping */
1739 if (packet_map_len
== ((filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
)) {
1741 * Reached EOF, but still expecting header/context data.
1743 fprintf(stderr
, "[error] Reached end of file, but still expecting header or context fields.\n");
1746 /* Double the mapping len, and retry */
1747 tmp_map_len
= packet_map_len
<< 1;
1748 if (tmp_map_len
>> 1 != packet_map_len
) {
1750 fprintf(stderr
, "[error] Packet mapping length overflow\n");
1753 packet_map_len
= tmp_map_len
;
1758 int create_stream_packet_index(struct ctf_trace
*td
,
1759 struct ctf_file_stream
*file_stream
)
1761 struct ctf_stream_pos
*pos
;
1762 struct stat filestats
;
1765 pos
= &file_stream
->pos
;
1767 ret
= fstat(pos
->fd
, &filestats
);
1771 /* Deal with empty files */
1772 if (!filestats
.st_size
) {
1773 if (file_stream
->parent
.trace_packet_header
1774 || file_stream
->parent
.stream_packet_context
) {
1776 * We expect a trace packet header and/or stream packet
1777 * context. Since a trace needs to have at least one
1778 * packet, empty files are therefore not accepted.
1780 fprintf(stderr
, "[error] Encountered an empty file, but expecting a trace packet header.\n");
1784 * Without trace packet header nor stream packet
1785 * context, a one-packet trace can indeed be empty. This
1786 * is only valid if there is only one stream class: 0.
1788 ret
= stream_assign_class(td
, file_stream
, 0);
1795 for (pos
->mmap_offset
= 0; pos
->mmap_offset
< filestats
.st_size
; ) {
1796 ret
= create_stream_one_packet_index(pos
, td
, file_stream
,
1805 int create_trace_definitions(struct ctf_trace
*td
, struct ctf_stream_definition
*stream
)
1809 if (td
->packet_header_decl
) {
1810 struct bt_definition
*definition
=
1811 td
->packet_header_decl
->p
.definition_new(&td
->packet_header_decl
->p
,
1812 stream
->parent_def_scope
, 0, 0, "trace.packet.header");
1817 stream
->trace_packet_header
=
1818 container_of(definition
, struct definition_struct
, p
);
1819 stream
->parent_def_scope
= stream
->trace_packet_header
->p
.scope
;
1825 fprintf(stderr
, "[error] Unable to create trace definitions: %s\n", strerror(-ret
));
1830 int import_stream_packet_index(struct ctf_trace
*td
,
1831 struct ctf_file_stream
*file_stream
)
1833 struct ctf_stream_pos
*pos
;
1834 struct ctf_packet_index
*ctf_index
= NULL
;
1835 struct ctf_packet_index_file_hdr index_hdr
;
1836 struct packet_index index
;
1837 uint32_t packet_index_len
;
1839 int first_packet
= 1;
1842 pos
= &file_stream
->pos
;
1844 len
= fread(&index_hdr
, sizeof(index_hdr
), 1, pos
->index_fp
);
1846 perror("read index file header");
1850 /* Check the index header */
1851 if (be32toh(index_hdr
.magic
) != CTF_INDEX_MAGIC
) {
1852 fprintf(stderr
, "[error] wrong index magic\n");
1856 if (be32toh(index_hdr
.index_major
) != CTF_INDEX_MAJOR
) {
1857 fprintf(stderr
, "[error] Incompatible index file %" PRIu32
1858 ".%" PRIu32
", supported %d.%d\n",
1859 be32toh(index_hdr
.index_major
),
1860 be32toh(index_hdr
.index_minor
), CTF_INDEX_MAJOR
,
1865 packet_index_len
= be32toh(index_hdr
.packet_index_len
);
1866 if (packet_index_len
== 0) {
1867 fprintf(stderr
, "[error] Packet index length cannot be 0.\n");
1872 * Allocate the index length found in header, not internal
1875 ctf_index
= g_malloc0(packet_index_len
);
1876 while (fread(ctf_index
, packet_index_len
, 1,
1877 pos
->index_fp
) == 1) {
1879 struct ctf_stream_declaration
*stream
= NULL
;
1881 memset(&index
, 0, sizeof(index
));
1882 index
.offset
= be64toh(ctf_index
->offset
);
1883 index
.packet_size
= be64toh(ctf_index
->packet_size
);
1884 index
.content_size
= be64toh(ctf_index
->content_size
);
1885 index
.ts_cycles
.timestamp_begin
= be64toh(ctf_index
->timestamp_begin
);
1886 index
.ts_cycles
.timestamp_end
= be64toh(ctf_index
->timestamp_end
);
1887 index
.events_discarded
= be64toh(ctf_index
->events_discarded
);
1888 index
.events_discarded_len
= 64;
1889 index
.data_offset
= -1;
1890 stream_id
= be64toh(ctf_index
->stream_id
);
1892 if (!first_packet
) {
1893 /* add index to packet array */
1894 g_array_append_val(file_stream
->pos
.packet_index
, index
);
1898 file_stream
->parent
.stream_id
= stream_id
;
1899 if (stream_id
< td
->streams
->len
) {
1900 stream
= g_ptr_array_index(td
->streams
, stream_id
);
1903 fprintf(stderr
, "[error] Stream %" PRIu64
1904 " is not declared in metadata.\n",
1909 file_stream
->parent
.stream_class
= stream
;
1910 ret
= create_stream_definitions(td
, &file_stream
->parent
);
1914 /* add index to packet array */
1915 g_array_append_val(file_stream
->pos
.packet_index
, index
);
1918 /* Index containing only the header. */
1919 if (!file_stream
->parent
.stream_class
) {
1932 * Note: many file streams can inherit from the same stream class
1933 * description (metadata).
1936 int ctf_open_file_stream_read(struct ctf_trace
*td
, const char *path
, int flags
,
1937 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
1940 int ret
, fd
, closeret
;
1941 struct ctf_file_stream
*file_stream
;
1942 struct stat statbuf
;
1945 fd
= openat(td
->dirfd
, path
, flags
);
1947 perror("File stream openat()");
1952 /* Don't try to mmap subdirectories. Skip them, return success. */
1953 ret
= fstat(fd
, &statbuf
);
1955 perror("File stream fstat()");
1958 if (S_ISDIR(statbuf
.st_mode
)) {
1959 if (strncmp(path
, "index", 5) != 0) {
1960 fprintf(stderr
, "[warning] Skipping directory '%s' "
1961 "found in trace\n", path
);
1966 if (!statbuf
.st_size
) {
1967 /** Skip empty files. */
1969 goto fd_is_empty_file
;
1972 file_stream
= g_new0(struct ctf_file_stream
, 1);
1973 file_stream
->pos
.last_offset
= LAST_OFFSET_POISON
;
1974 file_stream
->pos
.fd
= -1;
1975 file_stream
->pos
.index_fp
= NULL
;
1977 strncpy(file_stream
->parent
.path
, path
, PATH_MAX
);
1978 file_stream
->parent
.path
[PATH_MAX
- 1] = '\0';
1981 file_stream
->pos
.packet_seek
= packet_seek
;
1983 fprintf(stderr
, "[error] packet_seek function undefined.\n");
1988 ret
= ctf_init_pos(&file_stream
->pos
, &td
->parent
, fd
, flags
);
1991 ret
= create_trace_definitions(td
, &file_stream
->parent
);
1995 * For now, only a single clock per trace is supported.
1997 file_stream
->parent
.current_clock
= td
->parent
.single_clock
;
2000 * Allocate the index name for this stream and try to open it.
2002 index_name
= malloc((strlen(path
) + sizeof(INDEX_PATH
)) * sizeof(char));
2004 fprintf(stderr
, "[error] Cannot allocate index filename\n");
2008 snprintf(index_name
, strlen(path
) + sizeof(INDEX_PATH
),
2011 if (bt_faccessat(td
->dirfd
, td
->parent
.path
, index_name
, O_RDONLY
, 0) < 0) {
2012 ret
= create_stream_packet_index(td
, file_stream
);
2014 fprintf(stderr
, "[error] Stream index creation error.\n");
2018 ret
= openat(td
->dirfd
, index_name
, flags
);
2020 perror("Index file openat()");
2024 file_stream
->pos
.index_fp
= fdopen(ret
, "r");
2025 if (!file_stream
->pos
.index_fp
) {
2026 perror("fdopen() error");
2029 ret
= import_stream_packet_index(td
, file_stream
);
2034 ret
= fclose(file_stream
->pos
.index_fp
);
2036 perror("close index");
2042 /* Add stream file to stream class */
2043 g_ptr_array_add(file_stream
->parent
.stream_class
->streams
,
2044 &file_stream
->parent
);
2048 if (file_stream
->pos
.index_fp
) {
2049 ret
= fclose(file_stream
->pos
.index_fp
);
2051 perror("close index");
2054 if (file_stream
->parent
.trace_packet_header
)
2055 bt_definition_unref(&file_stream
->parent
.trace_packet_header
->p
);
2059 closeret
= ctf_fini_pos(&file_stream
->pos
);
2061 fprintf(stderr
, "Error on ctf_fini_pos\n");
2063 g_free(file_stream
);
2067 closeret
= close(fd
);
2069 perror("Error on fd close");
2076 int ctf_open_trace_read(struct ctf_trace
*td
,
2077 const char *path
, int flags
,
2078 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2079 int whence
), FILE *metadata_fp
)
2081 struct ctf_scanner
*scanner
;
2083 struct dirent
*dirent
;
2084 struct dirent
*diriter
;
2090 /* Open trace directory */
2091 td
->dir
= opendir(path
);
2093 fprintf(stderr
, "[error] Unable to open trace directory \"%s\".\n", path
);
2098 td
->dirfd
= open(path
, 0);
2099 if (td
->dirfd
< 0) {
2100 fprintf(stderr
, "[error] Unable to open trace directory file descriptor for path \"%s\".\n", path
);
2101 perror("Trace directory open");
2105 strncpy(td
->parent
.path
, path
, sizeof(td
->parent
.path
));
2106 td
->parent
.path
[sizeof(td
->parent
.path
) - 1] = '\0';
2109 * Keep the metadata file separate.
2110 * Keep scanner object local to the open. We don't support
2111 * incremental metadata append for on-disk traces.
2113 scanner
= ctf_scanner_alloc();
2115 fprintf(stderr
, "[error] Error allocating scanner\n");
2117 goto error_metadata
;
2119 ret
= ctf_trace_metadata_read(td
, metadata_fp
, scanner
, 0);
2120 ctf_scanner_free(scanner
);
2122 if (ret
== -ENOENT
) {
2123 fprintf(stderr
, "[warning] Empty metadata.\n");
2125 fprintf(stderr
, "[warning] Unable to open trace metadata for path \"%s\".\n", path
);
2126 goto error_metadata
;
2130 * Open each stream: for each file, try to open, check magic
2131 * number, and get the stream ID to add to the right location in
2135 dirent_len
= offsetof(struct dirent
, d_name
) +
2136 fpathconf(td
->dirfd
, _PC_NAME_MAX
) + 1;
2138 dirent
= malloc(dirent_len
);
2141 ret
= readdir_r(td
->dir
, dirent
, &diriter
);
2143 fprintf(stderr
, "[error] Readdir error.\n");
2148 /* Ignore hidden files, ., .. and metadata. */
2149 if (!strncmp(diriter
->d_name
, ".", 1)
2150 || !strcmp(diriter
->d_name
, "..")
2151 || !strcmp(diriter
->d_name
, "metadata"))
2154 /* Ignore index files : *.idx */
2155 ext
= strrchr(diriter
->d_name
, '.');
2156 if (ext
&& (!strcmp(ext
, ".idx"))) {
2160 ret
= ctf_open_file_stream_read(td
, diriter
->d_name
,
2161 flags
, packet_seek
);
2163 fprintf(stderr
, "[error] Open file stream error.\n");
2174 closeret
= close(td
->dirfd
);
2176 perror("Error on fd close");
2179 closeret
= closedir(td
->dir
);
2181 perror("Error on closedir");
2188 * ctf_open_trace: Open a CTF trace and index it.
2189 * Note that the user must seek the trace after the open (using the iterator)
2190 * since the index creation read it entirely.
2193 struct bt_trace_descriptor
*ctf_open_trace(const char *path
, int flags
,
2194 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2195 int whence
), FILE *metadata_fp
)
2197 struct ctf_trace
*td
;
2201 * If packet_seek is NULL, we provide our default version.
2204 packet_seek
= ctf_packet_seek
;
2206 td
= g_new0(struct ctf_trace
, 1);
2208 switch (flags
& O_ACCMODE
) {
2211 fprintf(stderr
, "[error] Path missing for input CTF trace.\n");
2214 ret
= ctf_open_trace_read(td
, path
, flags
, packet_seek
, metadata_fp
);
2219 fprintf(stderr
, "[error] Opening CTF traces for output is not supported yet.\n");
2222 fprintf(stderr
, "[error] Incorrect open flags.\n");
2233 void ctf_init_mmap_pos(struct ctf_stream_pos
*pos
,
2234 struct bt_mmap_stream
*mmap_info
)
2236 pos
->mmap_offset
= 0;
2237 pos
->packet_size
= 0;
2238 pos
->content_size
= 0;
2239 pos
->content_size_loc
= NULL
;
2240 pos
->fd
= mmap_info
->fd
;
2241 pos
->base_mma
= NULL
;
2245 pos
->prot
= PROT_READ
;
2246 pos
->flags
= MAP_PRIVATE
;
2247 pos
->parent
.rw_table
= read_dispatch_table
;
2248 pos
->parent
.event_cb
= ctf_read_event
;
2249 pos
->priv
= mmap_info
->priv
;
2250 pos
->packet_index
= g_array_new(FALSE
, TRUE
,
2251 sizeof(struct packet_index
));
2255 int prepare_mmap_stream_definition(struct ctf_trace
*td
,
2256 struct ctf_file_stream
*file_stream
,
2257 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2260 struct ctf_stream_declaration
*stream
;
2264 /* Ask for the first packet to get the stream_id. */
2265 packet_seek(&file_stream
->pos
.parent
, 0, SEEK_SET
);
2266 stream_id
= file_stream
->parent
.stream_id
;
2267 if (stream_id
>= td
->streams
->len
) {
2268 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared "
2269 "in metadata.\n", stream_id
);
2273 stream
= g_ptr_array_index(td
->streams
, stream_id
);
2275 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared "
2276 "in metadata.\n", stream_id
);
2280 file_stream
->parent
.stream_class
= stream
;
2281 ret
= create_stream_definitions(td
, &file_stream
->parent
);
2287 int ctf_open_mmap_stream_read(struct ctf_trace
*td
,
2288 struct bt_mmap_stream
*mmap_info
,
2289 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2293 struct ctf_file_stream
*file_stream
;
2295 file_stream
= g_new0(struct ctf_file_stream
, 1);
2296 file_stream
->parent
.stream_id
= -1ULL;
2297 file_stream
->pos
.last_offset
= LAST_OFFSET_POISON
;
2298 ctf_init_mmap_pos(&file_stream
->pos
, mmap_info
);
2300 file_stream
->pos
.packet_seek
= packet_seek
;
2302 ret
= create_trace_definitions(td
, &file_stream
->parent
);
2307 ret
= prepare_mmap_stream_definition(td
, file_stream
, packet_seek
);
2312 * For now, only a single clock per trace is supported.
2314 file_stream
->parent
.current_clock
= td
->parent
.single_clock
;
2316 /* Add stream file to stream class */
2317 g_ptr_array_add(file_stream
->parent
.stream_class
->streams
,
2318 &file_stream
->parent
);
2322 if (file_stream
->parent
.trace_packet_header
)
2323 bt_definition_unref(&file_stream
->parent
.trace_packet_header
->p
);
2325 g_free(file_stream
);
2330 int ctf_open_mmap_trace_read(struct ctf_trace
*td
,
2331 struct bt_mmap_stream_list
*mmap_list
,
2332 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2337 struct bt_mmap_stream
*mmap_info
;
2339 td
->scanner
= ctf_scanner_alloc();
2341 fprintf(stderr
, "[error] Error allocating scanner\n");
2345 ret
= ctf_trace_metadata_read(td
, metadata_fp
, td
->scanner
, 0);
2347 if (ret
== -ENOENT
) {
2348 fprintf(stderr
, "[warning] Empty metadata.\n");
2354 * for each stream, try to open, check magic number, and get the
2355 * stream ID to add to the right location in the stream array.
2357 bt_list_for_each_entry(mmap_info
, &mmap_list
->head
, list
) {
2358 ret
= ctf_open_mmap_stream_read(td
, mmap_info
, packet_seek
);
2360 fprintf(stderr
, "[error] Open file mmap stream error.\n");
2367 ctf_scanner_free(td
->scanner
);
2372 struct bt_trace_descriptor
*ctf_open_mmap_trace(
2373 struct bt_mmap_stream_list
*mmap_list
,
2374 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2378 struct ctf_trace
*td
;
2382 fprintf(stderr
, "[error] No metadata file pointer associated, "
2383 "required for mmap parsing\n");
2387 fprintf(stderr
, "[error] packet_seek function undefined.\n");
2390 td
= g_new0(struct ctf_trace
, 1);
2392 ret
= ctf_open_mmap_trace_read(td
, mmap_list
, packet_seek
, metadata_fp
);
2404 int ctf_append_trace_metadata(struct bt_trace_descriptor
*tdp
,
2407 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
2413 ret
= ctf_trace_metadata_read(td
, metadata_fp
, td
->scanner
, 1);
2416 /* for each stream_class */
2417 for (i
= 0; i
< td
->streams
->len
; i
++) {
2418 struct ctf_stream_declaration
*stream_class
;
2420 stream_class
= g_ptr_array_index(td
->streams
, i
);
2423 /* for each stream */
2424 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
2425 struct ctf_stream_definition
*stream
;
2427 stream
= g_ptr_array_index(stream_class
->streams
, j
);
2430 ret
= copy_event_declarations_stream_class_to_stream(td
,
2431 stream_class
, stream
);
2440 int ctf_convert_index_timestamp(struct bt_trace_descriptor
*tdp
)
2443 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
2445 /* for each stream_class */
2446 for (i
= 0; i
< td
->streams
->len
; i
++) {
2447 struct ctf_stream_declaration
*stream_class
;
2449 stream_class
= g_ptr_array_index(td
->streams
, i
);
2452 /* for each file_stream */
2453 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
2454 struct ctf_stream_definition
*stream
;
2455 struct ctf_stream_pos
*stream_pos
;
2456 struct ctf_file_stream
*cfs
;
2458 stream
= g_ptr_array_index(stream_class
->streams
, j
);
2461 cfs
= container_of(stream
, struct ctf_file_stream
,
2463 stream_pos
= &cfs
->pos
;
2464 if (!stream_pos
->packet_index
)
2467 for (k
= 0; k
< stream_pos
->packet_index
->len
; k
++) {
2468 struct packet_index
*index
;
2470 index
= &g_array_index(stream_pos
->packet_index
,
2471 struct packet_index
, k
);
2472 index
->ts_real
.timestamp_begin
=
2473 ctf_get_real_timestamp(stream
,
2474 index
->ts_cycles
.timestamp_begin
);
2475 index
->ts_real
.timestamp_end
=
2476 ctf_get_real_timestamp(stream
,
2477 index
->ts_cycles
.timestamp_end
);
2485 int ctf_close_file_stream(struct ctf_file_stream
*file_stream
)
2489 ret
= ctf_fini_pos(&file_stream
->pos
);
2491 fprintf(stderr
, "Error on ctf_fini_pos\n");
2494 if (file_stream
->pos
.fd
>= 0) {
2495 ret
= close(file_stream
->pos
.fd
);
2497 perror("Error closing file fd");
2505 int ctf_close_trace(struct bt_trace_descriptor
*tdp
)
2507 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
2513 for (i
= 0; i
< td
->streams
->len
; i
++) {
2514 struct ctf_stream_declaration
*stream
;
2517 stream
= g_ptr_array_index(td
->streams
, i
);
2520 for (j
= 0; j
< stream
->streams
->len
; j
++) {
2521 struct ctf_file_stream
*file_stream
;
2522 file_stream
= container_of(g_ptr_array_index(stream
->streams
, j
),
2523 struct ctf_file_stream
, parent
);
2524 ret
= ctf_close_file_stream(file_stream
);
2530 ctf_destroy_metadata(td
);
2531 ctf_scanner_free(td
->scanner
);
2532 if (td
->dirfd
>= 0) {
2533 ret
= close(td
->dirfd
);
2535 perror("Error closing dirfd");
2540 ret
= closedir(td
->dir
);
2542 perror("Error closedir");
2546 free(td
->metadata_string
);
2552 void ctf_set_context(struct bt_trace_descriptor
*descriptor
,
2553 struct bt_context
*ctx
)
2555 struct ctf_trace
*td
= container_of(descriptor
, struct ctf_trace
,
2558 td
->parent
.ctx
= ctx
;
2562 void ctf_set_handle(struct bt_trace_descriptor
*descriptor
,
2563 struct bt_trace_handle
*handle
)
2565 struct ctf_trace
*td
= container_of(descriptor
, struct ctf_trace
,
2568 td
->parent
.handle
= handle
;
2572 void __attribute__((constructor
)) ctf_init(void)
2576 ctf_format
.name
= g_quark_from_static_string("ctf");
2577 ret
= bt_register_format(&ctf_format
);
2582 void __attribute__((destructor
)) ctf_exit(void)
2584 bt_unregister_format(&ctf_format
);