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/format-internal.h>
31 #include <babeltrace/ctf/types.h>
32 #include <babeltrace/ctf/metadata.h>
33 #include <babeltrace/babeltrace-internal.h>
34 #include <babeltrace/ctf/events-internal.h>
35 #include <babeltrace/trace-handle-internal.h>
36 #include <babeltrace/context-internal.h>
37 #include <babeltrace/compat/uuid.h>
38 #include <babeltrace/endian.h>
39 #include <babeltrace/error.h>
40 #include <babeltrace/trace-debug-info.h>
41 #include <babeltrace/ctf/ctf-index.h>
46 #include <sys/types.h>
54 #include "metadata/ctf-scanner.h"
55 #include "metadata/ctf-parser.h"
56 #include "metadata/ctf-ast.h"
57 #include "events-private.h"
58 #include <babeltrace/compat/memstream.h>
59 #include <babeltrace/compat/fcntl.h>
61 #define LOG2_CHAR_BIT 3
64 * Length of first attempt at mapping a packet header, in bits.
66 #define DEFAULT_HEADER_LEN (getpagesize() * CHAR_BIT)
69 * Lenght of packet to write, in bits.
71 #define WRITE_PACKET_LEN (getpagesize() * 8 * CHAR_BIT)
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
;
86 char *opt_debug_info_dir
;
87 char *opt_debug_info_target_prefix
;
90 * TODO: babeltrace_ctf_console_output ensures that we only print
91 * discarded events when ctf-text plugin is used. Should be cleaned up
92 * with the plugin system redesign.
94 int babeltrace_ctf_console_output
;
97 struct bt_trace_descriptor
*ctf_open_trace(const char *path
, int flags
,
98 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
102 struct bt_trace_descriptor
*ctf_open_mmap_trace(
103 struct bt_mmap_stream_list
*mmap_list
,
104 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
108 void ctf_set_context(struct bt_trace_descriptor
*descriptor
,
109 struct bt_context
*ctx
);
111 void ctf_set_handle(struct bt_trace_descriptor
*descriptor
,
112 struct bt_trace_handle
*handle
);
115 int ctf_close_trace(struct bt_trace_descriptor
*descriptor
);
117 uint64_t ctf_timestamp_begin(struct bt_trace_descriptor
*descriptor
,
118 struct bt_trace_handle
*handle
, enum bt_clock_type type
);
120 uint64_t ctf_timestamp_end(struct bt_trace_descriptor
*descriptor
,
121 struct bt_trace_handle
*handle
, enum bt_clock_type type
);
123 int ctf_convert_index_timestamp(struct bt_trace_descriptor
*tdp
);
126 rw_dispatch read_dispatch_table
[] = {
127 [ CTF_TYPE_INTEGER
] = ctf_integer_read
,
128 [ CTF_TYPE_FLOAT
] = ctf_float_read
,
129 [ CTF_TYPE_ENUM
] = ctf_enum_read
,
130 [ CTF_TYPE_STRING
] = ctf_string_read
,
131 [ CTF_TYPE_STRUCT
] = ctf_struct_rw
,
132 [ CTF_TYPE_VARIANT
] = ctf_variant_rw
,
133 [ CTF_TYPE_ARRAY
] = ctf_array_read
,
134 [ CTF_TYPE_SEQUENCE
] = ctf_sequence_read
,
138 rw_dispatch write_dispatch_table
[] = {
139 [ CTF_TYPE_INTEGER
] = ctf_integer_write
,
140 [ CTF_TYPE_FLOAT
] = ctf_float_write
,
141 [ CTF_TYPE_ENUM
] = ctf_enum_write
,
142 [ CTF_TYPE_STRING
] = ctf_string_write
,
143 [ CTF_TYPE_STRUCT
] = ctf_struct_rw
,
144 [ CTF_TYPE_VARIANT
] = ctf_variant_rw
,
145 [ CTF_TYPE_ARRAY
] = ctf_array_write
,
146 [ CTF_TYPE_SEQUENCE
] = ctf_sequence_write
,
150 struct bt_format ctf_format
= {
151 .open_trace
= ctf_open_trace
,
152 .open_mmap_trace
= ctf_open_mmap_trace
,
153 .close_trace
= ctf_close_trace
,
154 .set_context
= ctf_set_context
,
155 .set_handle
= ctf_set_handle
,
156 .timestamp_begin
= ctf_timestamp_begin
,
157 .timestamp_end
= ctf_timestamp_end
,
158 .convert_index_timestamp
= ctf_convert_index_timestamp
,
162 uint64_t ctf_timestamp_begin(struct bt_trace_descriptor
*descriptor
,
163 struct bt_trace_handle
*handle
, enum bt_clock_type type
)
165 struct ctf_trace
*tin
;
166 uint64_t begin
= ULLONG_MAX
;
169 tin
= container_of(descriptor
, struct ctf_trace
, parent
);
174 /* for each stream_class */
175 for (i
= 0; i
< tin
->streams
->len
; i
++) {
176 struct ctf_stream_declaration
*stream_class
;
178 stream_class
= g_ptr_array_index(tin
->streams
, i
);
181 /* for each file_stream */
182 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
183 struct ctf_stream_definition
*stream
;
184 struct ctf_file_stream
*cfs
;
185 struct ctf_stream_pos
*stream_pos
;
186 struct packet_index
*index
;
188 stream
= g_ptr_array_index(stream_class
->streams
, j
);
189 cfs
= container_of(stream
, struct ctf_file_stream
,
191 stream_pos
= &cfs
->pos
;
193 if (!stream_pos
->packet_index
)
196 if (stream_pos
->packet_index
->len
<= 0)
199 index
= &g_array_index(stream_pos
->packet_index
,
201 stream_pos
->packet_index
->len
- 1);
202 if (type
== BT_CLOCK_REAL
) {
203 if (index
->ts_real
.timestamp_begin
< begin
)
204 begin
= index
->ts_real
.timestamp_begin
;
205 } else if (type
== BT_CLOCK_CYCLES
) {
206 if (index
->ts_cycles
.timestamp_begin
< begin
)
207 begin
= index
->ts_cycles
.timestamp_begin
;
221 uint64_t ctf_timestamp_end(struct bt_trace_descriptor
*descriptor
,
222 struct bt_trace_handle
*handle
, enum bt_clock_type type
)
224 struct ctf_trace
*tin
;
228 tin
= container_of(descriptor
, struct ctf_trace
, parent
);
233 /* for each stream_class */
234 for (i
= 0; i
< tin
->streams
->len
; i
++) {
235 struct ctf_stream_declaration
*stream_class
;
237 stream_class
= g_ptr_array_index(tin
->streams
, i
);
240 /* for each file_stream */
241 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
242 struct ctf_stream_definition
*stream
;
243 struct ctf_file_stream
*cfs
;
244 struct ctf_stream_pos
*stream_pos
;
245 struct packet_index
*index
;
247 stream
= g_ptr_array_index(stream_class
->streams
, j
);
248 cfs
= container_of(stream
, struct ctf_file_stream
,
250 stream_pos
= &cfs
->pos
;
252 if (!stream_pos
->packet_index
)
255 if (stream_pos
->packet_index
->len
<= 0)
258 index
= &g_array_index(stream_pos
->packet_index
,
260 stream_pos
->packet_index
->len
- 1);
261 if (type
== BT_CLOCK_REAL
) {
262 if (index
->ts_real
.timestamp_end
> end
)
263 end
= index
->ts_real
.timestamp_end
;
264 } else if (type
== BT_CLOCK_CYCLES
) {
265 if (index
->ts_cycles
.timestamp_end
> end
)
266 end
= index
->ts_cycles
.timestamp_end
;
280 * Update stream current timestamp
283 void ctf_update_timestamp(struct ctf_stream_definition
*stream
,
284 struct definition_integer
*integer_definition
)
286 struct declaration_integer
*integer_declaration
=
287 integer_definition
->declaration
;
288 uint64_t oldval
, newval
, updateval
;
290 if (unlikely(integer_declaration
->len
== 64)) {
291 stream
->cycles_timestamp
= integer_definition
->value
._unsigned
;
292 stream
->real_timestamp
= ctf_get_real_timestamp(stream
,
293 stream
->cycles_timestamp
);
297 oldval
= stream
->cycles_timestamp
;
298 oldval
&= (1ULL << integer_declaration
->len
) - 1;
299 newval
= integer_definition
->value
._unsigned
;
300 /* Test for overflow by comparing low bits */
302 newval
+= 1ULL << integer_declaration
->len
;
303 /* updateval contains old high bits, and new low bits (sum) */
304 updateval
= stream
->cycles_timestamp
;
305 updateval
&= ~((1ULL << integer_declaration
->len
) - 1);
307 stream
->cycles_timestamp
= updateval
;
309 /* convert to real timestamp */
310 stream
->real_timestamp
= ctf_get_real_timestamp(stream
,
311 stream
->cycles_timestamp
);
315 * Print timestamp, rescaling clock frequency to nanoseconds and
316 * applying offsets as needed (unix time).
319 void ctf_print_timestamp_real(FILE *fp
,
320 struct ctf_stream_definition
*stream
,
323 uint64_t ts_sec
= 0, ts_nsec
;
327 /* Add command-line offset in ns*/
328 ts_nsec
+= opt_clock_offset_ns
;
330 /* Add command-line offset */
331 ts_sec
+= opt_clock_offset
;
333 ts_sec
+= ts_nsec
/ NSEC_PER_SEC
;
334 ts_nsec
= ts_nsec
% NSEC_PER_SEC
;
336 if (!opt_clock_seconds
) {
338 time_t time_s
= (time_t) ts_sec
;
340 if (!opt_clock_gmt
) {
343 res
= localtime_r(&time_s
, &tm
);
345 fprintf(stderr
, "[warning] Unable to get localtime.\n");
351 res
= gmtime_r(&time_s
, &tm
);
353 fprintf(stderr
, "[warning] Unable to get gmtime.\n");
357 if (opt_clock_date
) {
361 /* Print date and time */
362 res
= strftime(timestr
, sizeof(timestr
),
365 fprintf(stderr
, "[warning] Unable to print ascii time.\n");
368 fprintf(fp
, "%s", timestr
);
370 /* Print time in HH:MM:SS.ns */
371 fprintf(fp
, "%02d:%02d:%02d.%09" PRIu64
,
372 tm
.tm_hour
, tm
.tm_min
, tm
.tm_sec
, ts_nsec
);
376 fprintf(fp
, "%3" PRIu64
".%09" PRIu64
,
384 * Print timestamp, in cycles
387 void ctf_print_timestamp_cycles(FILE *fp
,
388 struct ctf_stream_definition
*stream
,
391 fprintf(fp
, "%020" PRIu64
, timestamp
);
394 void ctf_print_timestamp(FILE *fp
,
395 struct ctf_stream_definition
*stream
,
398 if (opt_clock_cycles
) {
399 ctf_print_timestamp_cycles(fp
, stream
, timestamp
);
401 ctf_print_timestamp_real(fp
, stream
, timestamp
);
406 void print_uuid(FILE *fp
, unsigned char *uuid
)
410 for (i
= 0; i
< BABELTRACE_UUID_LEN
; i
++)
411 fprintf(fp
, "%x", (unsigned int) uuid
[i
]);
415 * Discarded events can be either:
416 * - discarded after end of previous buffer due to buffer full:
417 * happened within range: [ prev_timestamp_end, timestamp_begin ]
418 * - discarded within current buffer due to either event too large or
419 * nested wrap-around:
420 * happened within range: [ timestamp_begin, timestamp_end ]
422 * Given we have discarded counters of those two types merged into the
423 * events_discarded counter, we need to use the union of those ranges:
424 * [ prev_timestamp_end, timestamp_end ]
426 * Lost packets occur if the tracer overwrote some subbuffer(s) before the
427 * consumer had time to extract them. We keep track of those gaps with the
428 * packet sequence number in each packet.
430 void ctf_print_discarded_lost(FILE *fp
, struct ctf_stream_definition
*stream
)
432 if ((!stream
->events_discarded
&& !stream
->packets_lost
) ||
433 !babeltrace_ctf_console_output
) {
437 if (stream
->events_discarded
) {
438 fprintf(fp
, "[warning] Tracer discarded %" PRIu64
" events between [",
439 stream
->events_discarded
);
440 } else if (stream
->packets_lost
) {
441 fprintf(fp
, "[warning] Tracer lost %" PRIu64
" trace packets between [",
442 stream
->packets_lost
);
444 if (opt_clock_cycles
) {
445 ctf_print_timestamp(fp
, stream
,
446 stream
->prev
.cycles
.end
);
447 fprintf(fp
, "] and [");
448 ctf_print_timestamp(fp
, stream
,
449 stream
->current
.cycles
.end
);
451 ctf_print_timestamp(fp
, stream
,
452 stream
->prev
.real
.end
);
453 fprintf(fp
, "] and [");
454 ctf_print_timestamp(fp
, stream
,
455 stream
->current
.real
.end
);
457 fprintf(fp
, "] in trace UUID ");
458 print_uuid(fp
, stream
->stream_class
->trace
->uuid
);
459 if (stream
->stream_class
->trace
->parent
.path
[0])
460 fprintf(fp
, ", at path: \"%s\"",
461 stream
->stream_class
->trace
->parent
.path
);
463 fprintf(fp
, ", within stream id %" PRIu64
, stream
->stream_id
);
465 fprintf(fp
, ", at relative path: \"%s\"", stream
->path
);
467 fprintf(fp
, "You should consider recording a new trace with larger "
468 "buffers or with fewer events enabled.\n");
473 int ctf_read_event(struct bt_stream_pos
*ppos
, struct ctf_stream_definition
*stream
)
475 struct ctf_stream_pos
*pos
=
476 container_of(ppos
, struct ctf_stream_pos
, parent
);
477 struct ctf_stream_declaration
*stream_class
= stream
->stream_class
;
478 struct ctf_event_definition
*event
;
482 /* We need to check for EOF here for empty files. */
483 if (unlikely(pos
->offset
== EOF
))
486 if (ctf_pos_get_event(pos
))
489 /* save the current position as a restore point */
490 pos
->last_offset
= pos
->offset
;
493 * This is the EOF check after we've advanced the position in
496 if (unlikely(pos
->offset
== EOF
))
499 /* Stream is inactive for now (live reading). */
500 if (unlikely(pos
->content_size
== 0))
504 * Packet seeked to by ctf_pos_get_event() only contains
505 * headers, no event. Consider stream as inactive (live
508 if (unlikely(pos
->data_offset
== pos
->content_size
))
511 assert(pos
->offset
< pos
->content_size
);
513 /* Read event header */
514 if (likely(stream
->stream_event_header
)) {
515 struct definition_integer
*integer_definition
;
516 struct bt_definition
*variant
;
518 ret
= generic_rw(ppos
, &stream
->stream_event_header
->p
);
521 /* lookup event id */
522 integer_definition
= bt_lookup_integer(&stream
->stream_event_header
->p
, "id", FALSE
);
523 if (integer_definition
) {
524 id
= integer_definition
->value
._unsigned
;
526 struct definition_enum
*enum_definition
;
528 enum_definition
= bt_lookup_enum(&stream
->stream_event_header
->p
, "id", FALSE
);
529 if (enum_definition
) {
530 id
= enum_definition
->integer
->value
._unsigned
;
534 variant
= bt_lookup_variant(&stream
->stream_event_header
->p
, "v");
536 integer_definition
= bt_lookup_integer(variant
, "id", FALSE
);
537 if (integer_definition
) {
538 id
= integer_definition
->value
._unsigned
;
541 stream
->event_id
= id
;
543 /* lookup timestamp */
544 stream
->has_timestamp
= 0;
545 integer_definition
= bt_lookup_integer(&stream
->stream_event_header
->p
, "timestamp", FALSE
);
546 if (integer_definition
) {
547 ctf_update_timestamp(stream
, integer_definition
);
548 stream
->has_timestamp
= 1;
551 integer_definition
= bt_lookup_integer(variant
, "timestamp", FALSE
);
552 if (integer_definition
) {
553 ctf_update_timestamp(stream
, integer_definition
);
554 stream
->has_timestamp
= 1;
560 /* Read stream-declared event context */
561 if (stream
->stream_event_context
) {
562 ret
= generic_rw(ppos
, &stream
->stream_event_context
->p
);
567 if (unlikely(id
>= stream_class
->events_by_id
->len
)) {
568 fprintf(stderr
, "[error] Event id %" PRIu64
" is outside range.\n", id
);
571 event
= g_ptr_array_index(stream
->events_by_id
, id
);
572 if (unlikely(!event
)) {
573 fprintf(stderr
, "[error] Event id %" PRIu64
" is unknown.\n", id
);
577 /* Read event-declared event context */
578 if (event
->event_context
) {
579 ret
= generic_rw(ppos
, &event
->event_context
->p
);
584 /* Read event payload */
585 if (likely(event
->event_fields
)) {
586 ret
= generic_rw(ppos
, &event
->event_fields
->p
);
591 if (pos
->last_offset
== pos
->offset
) {
592 fprintf(stderr
, "[error] Invalid 0 byte event encountered.\n");
599 fprintf(stderr
, "[error] Unexpected end of packet. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
604 int ctf_write_event(struct bt_stream_pos
*pos
, struct ctf_stream_definition
*stream
)
606 struct ctf_stream_declaration
*stream_class
= stream
->stream_class
;
607 struct ctf_event_definition
*event
;
611 id
= stream
->event_id
;
613 /* print event header */
614 if (likely(stream
->stream_event_header
)) {
615 ret
= generic_rw(pos
, &stream
->stream_event_header
->p
);
620 /* print stream-declared event context */
621 if (stream
->stream_event_context
) {
622 ret
= generic_rw(pos
, &stream
->stream_event_context
->p
);
627 if (unlikely(id
>= stream_class
->events_by_id
->len
)) {
628 fprintf(stderr
, "[error] Event id %" PRIu64
" is outside range.\n", id
);
631 event
= g_ptr_array_index(stream
->events_by_id
, id
);
632 if (unlikely(!event
)) {
633 fprintf(stderr
, "[error] Event id %" PRIu64
" is unknown.\n", id
);
637 /* print event-declared event context */
638 if (event
->event_context
) {
639 ret
= generic_rw(pos
, &event
->event_context
->p
);
644 /* Read and print event payload */
645 if (likely(event
->event_fields
)) {
646 ret
= generic_rw(pos
, &event
->event_fields
->p
);
654 fprintf(stderr
, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
659 * One side-effect of this function is to unmap pos mmap base if one is
663 int find_data_offset(struct ctf_stream_pos
*pos
,
664 struct ctf_file_stream
*file_stream
,
665 struct packet_index
*packet_index
)
667 uint64_t packet_map_len
= DEFAULT_HEADER_LEN
, tmp_map_len
;
668 struct stat filestats
;
672 pos
= &file_stream
->pos
;
674 ret
= fstat(pos
->fd
, &filestats
);
677 filesize
= filestats
.st_size
;
679 /* Deal with empty files */
685 if (filesize
- pos
->mmap_offset
< (packet_map_len
>> LOG2_CHAR_BIT
)) {
686 packet_map_len
= (filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
;
691 ret
= munmap_align(pos
->base_mma
);
693 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
697 pos
->base_mma
= NULL
;
699 /* map new base. Need mapping length from header. */
700 pos
->base_mma
= mmap_align(packet_map_len
>> LOG2_CHAR_BIT
, PROT_READ
,
701 MAP_PRIVATE
, pos
->fd
, pos
->mmap_offset
);
702 assert(pos
->base_mma
!= MAP_FAILED
);
704 pos
->content_size
= packet_map_len
;
705 pos
->packet_size
= packet_map_len
;
706 pos
->offset
= 0; /* Position of the packet header */
708 /* update trace_packet_header and stream_packet_context */
709 if (pos
->prot
== PROT_READ
&& file_stream
->parent
.trace_packet_header
) {
710 /* Read packet header */
711 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
717 if (pos
->prot
== PROT_READ
&& file_stream
->parent
.stream_packet_context
) {
718 /* Read packet context */
719 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
725 packet_index
->data_offset
= pos
->offset
;
728 ret
= munmap_align(pos
->base_mma
);
730 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
734 pos
->base_mma
= NULL
;
738 /* Retry with larger mapping */
740 if (packet_map_len
== ((filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
)) {
742 * Reached EOF, but still expecting header/context data.
744 fprintf(stderr
, "[error] Reached end of file, but still expecting header or context fields.\n");
747 /* Double the mapping len, and retry */
748 tmp_map_len
= packet_map_len
<< 1;
749 if (tmp_map_len
>> 1 != packet_map_len
) {
751 fprintf(stderr
, "[error] Packet mapping length overflow\n");
754 packet_map_len
= tmp_map_len
;
759 int ctf_init_pos(struct ctf_stream_pos
*pos
, struct bt_trace_descriptor
*trace
,
760 int fd
, int open_flags
)
764 pos
->packet_index
= g_array_new(FALSE
, TRUE
,
765 sizeof(struct packet_index
));
767 pos
->packet_index
= NULL
;
769 switch (open_flags
& O_ACCMODE
) {
771 pos
->prot
= PROT_READ
;
772 pos
->flags
= MAP_PRIVATE
;
773 pos
->parent
.rw_table
= read_dispatch_table
;
774 pos
->parent
.event_cb
= ctf_read_event
;
775 pos
->parent
.trace
= trace
;
778 pos
->prot
= PROT_READ
| PROT_WRITE
;
779 pos
->flags
= MAP_SHARED
;
780 pos
->parent
.rw_table
= write_dispatch_table
;
781 pos
->parent
.event_cb
= ctf_write_event
;
782 pos
->parent
.trace
= trace
;
784 ctf_packet_seek(&pos
->parent
, 0, SEEK_SET
); /* position for write */
792 int ctf_fini_pos(struct ctf_stream_pos
*pos
)
794 if ((pos
->prot
& PROT_WRITE
) && pos
->content_size_loc
)
795 *pos
->content_size_loc
= pos
->offset
;
800 ret
= munmap_align(pos
->base_mma
);
802 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
807 if (pos
->packet_index
)
808 (void) g_array_free(pos
->packet_index
, TRUE
);
812 void ctf_update_current_packet_index(struct ctf_stream_definition
*stream
,
813 struct packet_index
*prev_index
,
814 struct packet_index
*cur_index
)
816 uint64_t events_discarded_diff
;
817 uint64_t packets_lost_diff
= 0;
819 /* Update packet index time information */
821 /* Current packet begin/end */
822 stream
->current
.real
.begin
=
823 cur_index
->ts_real
.timestamp_begin
;
824 stream
->current
.cycles
.begin
=
825 cur_index
->ts_cycles
.timestamp_begin
;
826 stream
->current
.real
.end
=
827 cur_index
->ts_real
.timestamp_end
;
828 stream
->current
.cycles
.end
=
829 cur_index
->ts_cycles
.timestamp_end
;
831 /* Update packet index discarded event information */
832 events_discarded_diff
= cur_index
->events_discarded
;
834 /* Previous packet begin/end */
835 stream
->prev
.cycles
.begin
=
836 prev_index
->ts_cycles
.timestamp_begin
;
837 stream
->prev
.real
.begin
=
838 prev_index
->ts_real
.timestamp_begin
;
839 stream
->prev
.cycles
.end
=
840 prev_index
->ts_cycles
.timestamp_end
;
841 stream
->prev
.real
.end
=
842 prev_index
->ts_real
.timestamp_end
;
844 events_discarded_diff
-= prev_index
->events_discarded
;
845 /* packet_seq_num stays at 0 if not produced by the tracer */
846 if (cur_index
->packet_seq_num
) {
847 packets_lost_diff
= cur_index
->packet_seq_num
-
848 prev_index
->packet_seq_num
- 1;
851 * Deal with 32-bit wrap-around if the tracer provided a
854 if (prev_index
->events_discarded_len
== 32) {
855 events_discarded_diff
= (uint32_t) events_discarded_diff
;
859 * First packet: use current packet info as limits for
862 stream
->prev
.cycles
.begin
=
863 stream
->prev
.cycles
.end
=
864 stream
->current
.cycles
.begin
;
865 stream
->prev
.real
.begin
=
866 stream
->prev
.real
.end
=
867 stream
->current
.real
.begin
;
869 stream
->events_discarded
= events_discarded_diff
;
870 stream
->packets_lost
= packets_lost_diff
;
874 * Find the timerange where all the streams in the trace are active
877 * Return 0 and update begin/end if necessary on success, return 1 for
878 * empty streams and return a negative value on error.
881 int ctf_find_stream_intersection(struct bt_trace_descriptor
*td_read
,
882 struct packet_index_time
*_real
,
883 struct packet_index_time
*_cycles
)
885 int stream_id
, ret
= 0;
886 struct packet_index_time real
= { 0, UINT64_MAX
},
887 cycles
= { 0, UINT64_MAX
};
888 struct ctf_trace
*tin
= container_of(td_read
, struct ctf_trace
, parent
);
890 /* At least one of the two return args must be provided. */
891 if (!_real
&& !_cycles
) {
896 if (tin
->streams
->len
== 0) {
901 for (stream_id
= 0; stream_id
< tin
->streams
->len
;
904 struct ctf_stream_declaration
*stream_class
;
906 stream_class
= g_ptr_array_index(tin
->streams
, stream_id
);
910 for (filenr
= 0; filenr
< stream_class
->streams
->len
; filenr
++) {
911 struct ctf_file_stream
*file_stream
;
912 struct ctf_stream_pos
*stream_pos
;
913 struct packet_index
*index
;
915 file_stream
= g_ptr_array_index(stream_class
->streams
,
920 stream_pos
= &file_stream
->pos
;
921 if (!stream_pos
->packet_index
||
922 stream_pos
->packet_index
->len
<= 0) {
926 index
= &g_array_index(stream_pos
->packet_index
,
927 struct packet_index
, 0);
928 real
.timestamp_begin
= max(real
.timestamp_begin
,
929 index
->ts_real
.timestamp_begin
);
930 cycles
.timestamp_begin
= max(cycles
.timestamp_begin
,
931 index
->ts_cycles
.timestamp_begin
);
933 index
= &g_array_index(stream_pos
->packet_index
,
935 stream_pos
->packet_index
->len
- 1);
936 real
.timestamp_end
= min(real
.timestamp_end
,
937 index
->ts_real
.timestamp_end
);
938 cycles
.timestamp_end
= min(cycles
.timestamp_end
,
939 index
->ts_cycles
.timestamp_end
);
955 * Find the union of all active regions in the trace collection's traces.
956 * Returns "real" timestamps.
958 * Return 0 on success.
959 * Return 1 if no intersections are found.
960 * Return a negative value on error.
962 int ctf_find_tc_stream_packet_intersection_union(struct bt_context
*ctx
,
963 uint64_t *_ts_begin
, uint64_t *_ts_end
)
966 uint64_t ts_begin
= UINT64_MAX
, ts_end
= 0;
968 if (!ctx
|| !ctx
->tc
|| !ctx
->tc
->array
|| !_ts_begin
|| !_ts_end
) {
973 for (i
= 0; i
< ctx
->tc
->array
->len
; i
++) {
974 struct bt_trace_descriptor
*td_read
;
975 struct packet_index_time intersection_real
;
977 td_read
= g_ptr_array_index(ctx
->tc
->array
, i
);
981 ret
= ctf_find_stream_intersection(td_read
, &intersection_real
,
984 /* Empty trace or no stream intersection. */
986 } else if (ret
< 0) {
990 ts_begin
= min(intersection_real
.timestamp_begin
, ts_begin
);
991 ts_end
= max(intersection_real
.timestamp_end
, ts_end
);
994 if (ts_end
< ts_begin
) {
998 *_ts_begin
= ts_begin
;
1004 int ctf_tc_set_stream_intersection_mode(struct bt_context
*ctx
)
1008 if (!ctx
|| !ctx
->tc
|| !ctx
->tc
->array
) {
1013 for (i
= 0; i
< ctx
->tc
->array
->len
; i
++) {
1014 struct bt_trace_descriptor
*td_read
;
1015 struct packet_index_time intersection_real
;
1017 td_read
= g_ptr_array_index(ctx
->tc
->array
, i
);
1022 ret
= ctf_find_stream_intersection(td_read
, &intersection_real
,
1025 /* Empty trace or no stream intersection. */
1027 } else if (ret
< 0) {
1031 td_read
->interval_real
= intersection_real
;
1032 td_read
->interval_set
= true;
1039 * for SEEK_CUR: go to next packet.
1040 * for SEEK_SET: go to packet numer (index).
1042 void ctf_packet_seek(struct bt_stream_pos
*stream_pos
, size_t index
, int whence
)
1044 struct ctf_stream_pos
*pos
=
1045 container_of(stream_pos
, struct ctf_stream_pos
, parent
);
1046 struct ctf_file_stream
*file_stream
=
1047 container_of(pos
, struct ctf_file_stream
, pos
);
1049 struct packet_index
*packet_index
, *prev_index
;
1053 case SEEK_SET
: /* Fall-through */
1060 if ((pos
->prot
& PROT_WRITE
) && pos
->content_size_loc
)
1061 *pos
->content_size_loc
= pos
->offset
;
1063 if (pos
->base_mma
) {
1064 /* unmap old base */
1065 ret
= munmap_align(pos
->base_mma
);
1067 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
1072 pos
->base_mma
= NULL
;
1076 * The caller should never ask for ctf_move_pos across packets,
1077 * except to get exactly at the beginning of the next packet.
1079 if (pos
->prot
& PROT_WRITE
) {
1082 /* The writer will add padding */
1083 pos
->mmap_offset
+= pos
->packet_size
/ CHAR_BIT
;
1086 assert(index
== 0); /* only seek supported for now */
1093 pos
->content_size
= -1U; /* Unknown at this point */
1094 pos
->packet_size
= WRITE_PACKET_LEN
;
1096 ret
= bt_posix_fallocate(pos
->fd
, pos
->mmap_offset
,
1097 pos
->packet_size
/ CHAR_BIT
);
1098 } while (ret
== EINTR
);
1106 if (pos
->offset
== EOF
) {
1110 assert(pos
->cur_index
< pos
->packet_index
->len
);
1111 /* The reader will expect us to skip padding */
1116 if (index
>= pos
->packet_index
->len
) {
1121 pos
->cur_index
= index
;
1128 if (pos
->cur_index
>= pos
->packet_index
->len
) {
1134 packet_index
= &g_array_index(pos
->packet_index
,
1135 struct packet_index
, pos
->cur_index
);
1136 if (pos
->cur_index
> 0) {
1137 prev_index
= &g_array_index(pos
->packet_index
,
1138 struct packet_index
,
1139 pos
->cur_index
- 1);
1143 ctf_update_current_packet_index(&file_stream
->parent
,
1144 prev_index
, packet_index
);
1146 if (pos
->cur_index
>= pos
->packet_index
->len
) {
1153 * We need to check if we are in trace read or called
1154 * from packet indexing. In this last case, the
1155 * collection is not there, so we cannot print the
1158 if ((&file_stream
->parent
)->stream_class
->trace
->parent
.collection
) {
1159 ctf_print_discarded_lost(stderr
, &file_stream
->parent
);
1162 packet_index
= &g_array_index(pos
->packet_index
,
1163 struct packet_index
,
1165 file_stream
->parent
.cycles_timestamp
= packet_index
->ts_cycles
.timestamp_begin
;
1167 file_stream
->parent
.real_timestamp
= packet_index
->ts_real
.timestamp_begin
;
1169 /* Lookup context/packet size in index */
1170 if (packet_index
->data_offset
== -1) {
1171 ret
= find_data_offset(pos
, file_stream
, packet_index
);
1177 pos
->content_size
= packet_index
->content_size
;
1178 pos
->packet_size
= packet_index
->packet_size
;
1179 pos
->mmap_offset
= packet_index
->offset
;
1180 pos
->data_offset
= packet_index
->data_offset
;
1181 if (pos
->data_offset
< packet_index
->content_size
) {
1182 pos
->offset
= 0; /* will read headers */
1183 } else if (pos
->data_offset
== packet_index
->content_size
) {
1185 pos
->offset
= packet_index
->data_offset
;
1187 goto read_next_packet
;
1194 /* map new base. Need mapping length from header. */
1195 pos
->base_mma
= mmap_align(pos
->packet_size
/ CHAR_BIT
, pos
->prot
,
1196 pos
->flags
, pos
->fd
, pos
->mmap_offset
);
1197 if (pos
->base_mma
== MAP_FAILED
) {
1198 fprintf(stderr
, "[error] mmap error %s.\n",
1203 /* update trace_packet_header and stream_packet_context */
1204 if (!(pos
->prot
& PROT_WRITE
) &&
1205 file_stream
->parent
.trace_packet_header
) {
1206 /* Read packet header */
1207 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
1210 if (!(pos
->prot
& PROT_WRITE
) &&
1211 file_stream
->parent
.stream_packet_context
) {
1212 /* Read packet context */
1213 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
1218 bt_packet_seek_set_error(ret
);
1222 int packet_metadata(struct ctf_trace
*td
, FILE *fp
)
1228 len
= fread(&magic
, sizeof(magic
), 1, fp
);
1232 if (magic
== TSDL_MAGIC
) {
1234 td
->byte_order
= BYTE_ORDER
;
1235 CTF_TRACE_SET_FIELD(td
, byte_order
);
1236 } else if (magic
== GUINT32_SWAP_LE_BE(TSDL_MAGIC
)) {
1238 td
->byte_order
= (BYTE_ORDER
== BIG_ENDIAN
) ?
1239 LITTLE_ENDIAN
: BIG_ENDIAN
;
1240 CTF_TRACE_SET_FIELD(td
, byte_order
);
1248 * Returns 0 on success, -1 on error.
1251 int check_version(unsigned int major
, unsigned int minor
)
1266 /* eventually return an error instead of warning */
1268 fprintf(stderr
, "[warning] Unsupported CTF specification version %u.%u. Trying anyway.\n",
1274 int ctf_trace_metadata_packet_read(struct ctf_trace
*td
, FILE *in
,
1277 struct metadata_packet_header header
;
1278 size_t readlen
, writelen
, toread
;
1279 char buf
[4096 + 1]; /* + 1 for debug-mode \0 */
1282 readlen
= fread(&header
, header_sizeof(header
), 1, in
);
1286 if (td
->byte_order
!= BYTE_ORDER
) {
1287 header
.magic
= GUINT32_SWAP_LE_BE(header
.magic
);
1288 header
.checksum
= GUINT32_SWAP_LE_BE(header
.checksum
);
1289 header
.content_size
= GUINT32_SWAP_LE_BE(header
.content_size
);
1290 header
.packet_size
= GUINT32_SWAP_LE_BE(header
.packet_size
);
1292 if (header
.checksum
)
1293 fprintf(stderr
, "[warning] checksum verification not supported yet.\n");
1294 if (header
.compression_scheme
) {
1295 fprintf(stderr
, "[error] compression (%u) not supported yet.\n",
1296 header
.compression_scheme
);
1299 if (header
.encryption_scheme
) {
1300 fprintf(stderr
, "[error] encryption (%u) not supported yet.\n",
1301 header
.encryption_scheme
);
1304 if (header
.checksum_scheme
) {
1305 fprintf(stderr
, "[error] checksum (%u) not supported yet.\n",
1306 header
.checksum_scheme
);
1309 if (check_version(header
.major
, header
.minor
) < 0)
1311 if (!CTF_TRACE_FIELD_IS_SET(td
, uuid
)) {
1312 memcpy(td
->uuid
, header
.uuid
, sizeof(header
.uuid
));
1313 CTF_TRACE_SET_FIELD(td
, uuid
);
1315 if (bt_uuid_compare(header
.uuid
, td
->uuid
))
1319 if ((header
.content_size
/ CHAR_BIT
) < header_sizeof(header
))
1322 toread
= (header
.content_size
/ CHAR_BIT
) - header_sizeof(header
);
1325 readlen
= fread(buf
, sizeof(char), min(sizeof(buf
) - 1, toread
), in
);
1330 if (babeltrace_debug
) {
1331 buf
[readlen
] = '\0';
1332 fprintf(stderr
, "[debug] metadata packet read: %s\n",
1336 writelen
= fwrite(buf
, sizeof(char), readlen
, out
);
1337 if (writelen
< readlen
) {
1347 ret
= 0; /* continue reading next packet */
1354 toread
= (header
.packet_size
- header
.content_size
) / CHAR_BIT
;
1355 ret
= fseek(in
, toread
, SEEK_CUR
);
1357 fprintf(stderr
, "[warning] Missing padding at end of file\n");
1364 int ctf_trace_metadata_stream_read(struct ctf_trace
*td
, FILE **fp
,
1368 size_t size
, buflen
;
1373 * Using strlen on *buf instead of size of open_memstream
1374 * because its size includes garbage at the end (after final
1375 * \0). This is the allocated size, not the actual string size.
1377 out
= babeltrace_open_memstream(buf
, &size
);
1379 perror("Metadata open_memstream");
1383 ret
= ctf_trace_metadata_packet_read(td
, in
, out
);
1392 /* close to flush the buffer */
1393 ret
= babeltrace_close_memstream(buf
, &size
, out
);
1397 perror("babeltrace_flush_memstream");
1399 closeret
= fclose(in
);
1401 perror("Error in fclose");
1407 perror("Error in fclose");
1409 /* open for reading */
1410 buflen
= strlen(*buf
);
1415 *fp
= babeltrace_fmemopen(*buf
, buflen
, "rb");
1417 perror("Metadata fmemopen");
1424 int ctf_trace_metadata_read(struct ctf_trace
*td
, FILE *metadata_fp
,
1425 struct ctf_scanner
*scanner
, int append
)
1427 struct ctf_file_stream
*metadata_stream
;
1430 int ret
= 0, closeret
;
1432 metadata_stream
= g_new0(struct ctf_file_stream
, 1);
1433 metadata_stream
->pos
.last_offset
= LAST_OFFSET_POISON
;
1437 metadata_stream
->pos
.fd
= -1;
1439 td
->metadata
= &metadata_stream
->parent
;
1440 metadata_stream
->pos
.fd
= openat(td
->dirfd
, "metadata", O_RDONLY
);
1441 if (metadata_stream
->pos
.fd
< 0) {
1442 fprintf(stderr
, "Unable to open metadata.\n");
1447 fp
= fdopen(metadata_stream
->pos
.fd
, "r");
1449 fprintf(stderr
, "[error] Unable to open metadata stream.\n");
1450 perror("Metadata stream open");
1454 /* fd now belongs to fp */
1455 metadata_stream
->pos
.fd
= -1;
1457 if (babeltrace_debug
)
1460 if (packet_metadata(td
, fp
)) {
1461 ret
= ctf_trace_metadata_stream_read(td
, &fp
, &buf
);
1465 td
->metadata_string
= buf
;
1466 td
->metadata_packetized
= 1;
1469 unsigned int major
, minor
;
1472 td
->byte_order
= BYTE_ORDER
;
1474 /* Check text-only metadata header and version */
1475 nr_items
= fscanf(fp
, "/* CTF %10u.%10u", &major
, &minor
);
1477 fprintf(stderr
, "[warning] Ill-shapen or missing \"/* CTF x.y\" header for text-only metadata.\n");
1478 if (check_version(major
, minor
) < 0) {
1486 ret
= ctf_scanner_append_ast(scanner
, fp
);
1488 fprintf(stderr
, "[error] Error creating AST\n");
1492 if (babeltrace_debug
) {
1493 ret
= ctf_visitor_print_xml(stderr
, 0, &scanner
->ast
->root
);
1495 fprintf(stderr
, "[error] Error visiting AST for XML output\n");
1500 ret
= ctf_visitor_semantic_check(stderr
, 0, &scanner
->ast
->root
);
1502 fprintf(stderr
, "[error] Error in CTF semantic validation %d\n", ret
);
1505 ret
= ctf_visitor_construct_metadata(stderr
, 0, &scanner
->ast
->root
,
1506 td
, td
->byte_order
);
1508 fprintf(stderr
, "[error] Error in CTF metadata constructor %d\n", ret
);
1513 closeret
= fclose(fp
);
1515 perror("Error on fclose");
1519 if (metadata_stream
->pos
.fd
>= 0) {
1520 closeret
= close(metadata_stream
->pos
.fd
);
1522 perror("Error on metadata stream fd close");
1527 g_free(metadata_stream
);
1532 struct ctf_event_definition
*create_event_definitions(struct ctf_trace
*td
,
1533 struct ctf_stream_definition
*stream
,
1534 struct ctf_event_declaration
*event
)
1536 struct ctf_event_definition
*stream_event
= g_new0(struct ctf_event_definition
, 1);
1538 if (event
->context_decl
) {
1539 struct bt_definition
*definition
=
1540 event
->context_decl
->p
.definition_new(&event
->context_decl
->p
,
1541 stream
->parent_def_scope
, 0, 0, "event.context");
1545 stream_event
->event_context
= container_of(definition
,
1546 struct definition_struct
, p
);
1547 stream
->parent_def_scope
= stream_event
->event_context
->p
.scope
;
1549 if (event
->fields_decl
) {
1550 struct bt_definition
*definition
=
1551 event
->fields_decl
->p
.definition_new(&event
->fields_decl
->p
,
1552 stream
->parent_def_scope
, 0, 0, "event.fields");
1556 stream_event
->event_fields
= container_of(definition
,
1557 struct definition_struct
, p
);
1558 stream
->parent_def_scope
= stream_event
->event_fields
->p
.scope
;
1560 stream_event
->stream
= stream
;
1561 return stream_event
;
1564 if (stream_event
->event_fields
)
1565 bt_definition_unref(&stream_event
->event_fields
->p
);
1566 if (stream_event
->event_context
)
1567 bt_definition_unref(&stream_event
->event_context
->p
);
1568 fprintf(stderr
, "[error] Unable to create event definition for event \"%s\".\n",
1569 g_quark_to_string(event
->name
));
1574 int copy_event_declarations_stream_class_to_stream(struct ctf_trace
*td
,
1575 struct ctf_stream_declaration
*stream_class
,
1576 struct ctf_stream_definition
*stream
)
1578 size_t def_size
, class_size
, i
;
1581 def_size
= stream
->events_by_id
->len
;
1582 class_size
= stream_class
->events_by_id
->len
;
1584 g_ptr_array_set_size(stream
->events_by_id
, class_size
);
1585 for (i
= def_size
; i
< class_size
; i
++) {
1586 struct ctf_event_declaration
*event
=
1587 g_ptr_array_index(stream_class
->events_by_id
, i
);
1588 struct ctf_event_definition
*stream_event
;
1592 stream_event
= create_event_definitions(td
, stream
, event
);
1593 if (!stream_event
) {
1597 g_ptr_array_index(stream
->events_by_id
, i
) = stream_event
;
1604 int create_stream_definitions(struct ctf_trace
*td
, struct ctf_stream_definition
*stream
)
1606 struct ctf_stream_declaration
*stream_class
;
1610 if (stream
->stream_definitions_created
)
1613 stream_class
= stream
->stream_class
;
1615 if (stream_class
->packet_context_decl
) {
1616 struct bt_definition
*definition
=
1617 stream_class
->packet_context_decl
->p
.definition_new(&stream_class
->packet_context_decl
->p
,
1618 stream
->parent_def_scope
, 0, 0, "stream.packet.context");
1623 stream
->stream_packet_context
= container_of(definition
,
1624 struct definition_struct
, p
);
1625 stream
->parent_def_scope
= stream
->stream_packet_context
->p
.scope
;
1627 if (stream_class
->event_header_decl
) {
1628 struct bt_definition
*definition
=
1629 stream_class
->event_header_decl
->p
.definition_new(&stream_class
->event_header_decl
->p
,
1630 stream
->parent_def_scope
, 0, 0, "stream.event.header");
1635 stream
->stream_event_header
=
1636 container_of(definition
, struct definition_struct
, p
);
1637 stream
->parent_def_scope
= stream
->stream_event_header
->p
.scope
;
1639 if (stream_class
->event_context_decl
) {
1640 struct bt_definition
*definition
=
1641 stream_class
->event_context_decl
->p
.definition_new(&stream_class
->event_context_decl
->p
,
1642 stream
->parent_def_scope
, 0, 0, "stream.event.context");
1647 stream
->stream_event_context
=
1648 container_of(definition
, struct definition_struct
, p
);
1649 stream
->parent_def_scope
= stream
->stream_event_context
->p
.scope
;
1651 stream
->events_by_id
= g_ptr_array_new();
1652 ret
= copy_event_declarations_stream_class_to_stream(td
,
1653 stream_class
, stream
);
1659 for (i
= 0; i
< stream
->events_by_id
->len
; i
++) {
1660 struct ctf_event_definition
*stream_event
= g_ptr_array_index(stream
->events_by_id
, i
);
1662 g_free(stream_event
);
1664 g_ptr_array_free(stream
->events_by_id
, TRUE
);
1666 if (stream
->stream_event_context
)
1667 bt_definition_unref(&stream
->stream_event_context
->p
);
1668 if (stream
->stream_event_header
)
1669 bt_definition_unref(&stream
->stream_event_header
->p
);
1670 if (stream
->stream_packet_context
)
1671 bt_definition_unref(&stream
->stream_packet_context
->p
);
1672 fprintf(stderr
, "[error] Unable to create stream (%" PRIu64
") definitions: %s\n",
1673 stream_class
->stream_id
, strerror(-ret
));
1678 int stream_assign_class(struct ctf_trace
*td
,
1679 struct ctf_file_stream
*file_stream
,
1682 struct ctf_stream_declaration
*stream
;
1685 file_stream
->parent
.stream_id
= stream_id
;
1686 if (stream_id
>= td
->streams
->len
) {
1687 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared in metadata.\n", stream_id
);
1690 stream
= g_ptr_array_index(td
->streams
, stream_id
);
1692 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared in metadata.\n", stream_id
);
1695 file_stream
->parent
.stream_class
= stream
;
1696 ret
= create_stream_definitions(td
, &file_stream
->parent
);
1703 int create_stream_one_packet_index(struct ctf_stream_pos
*pos
,
1704 struct ctf_trace
*td
,
1705 struct ctf_file_stream
*file_stream
,
1708 struct packet_index packet_index
;
1709 uint64_t stream_id
= 0;
1710 uint64_t packet_map_len
= DEFAULT_HEADER_LEN
, tmp_map_len
;
1711 int first_packet
= 0;
1716 memset(&packet_index
, 0, sizeof(packet_index
));
1717 if (!pos
->mmap_offset
) {
1721 if (filesize
- pos
->mmap_offset
< (packet_map_len
>> LOG2_CHAR_BIT
)) {
1722 packet_map_len
= (filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
;
1725 if (pos
->base_mma
) {
1726 /* unmap old base */
1727 ret
= munmap_align(pos
->base_mma
);
1729 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
1733 pos
->base_mma
= NULL
;
1735 /* map new base. Need mapping length from header. */
1736 pos
->base_mma
= mmap_align(packet_map_len
>> LOG2_CHAR_BIT
, PROT_READ
,
1737 MAP_PRIVATE
, pos
->fd
, pos
->mmap_offset
);
1738 assert(pos
->base_mma
!= MAP_FAILED
);
1740 * Use current mapping size as temporary content and packet
1743 pos
->content_size
= packet_map_len
;
1744 pos
->packet_size
= packet_map_len
;
1745 pos
->offset
= 0; /* Position of the packet header */
1747 packet_index
.offset
= pos
->mmap_offset
;
1749 /* read and check header, set stream id (and check) */
1750 if (file_stream
->parent
.trace_packet_header
) {
1751 /* Read packet header */
1752 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
1756 fprintf(stderr
, "[error] Unable to read packet header: %s\n", strerror(-ret
));
1759 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("magic"));
1760 if (len_index
>= 0) {
1761 struct bt_definition
*field
;
1764 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1765 magic
= bt_get_unsigned_int(field
);
1766 if (magic
!= CTF_MAGIC
) {
1767 fprintf(stderr
, "[error] Invalid magic number 0x%" PRIX64
" at packet %u (file offset %zd).\n",
1769 file_stream
->pos
.packet_index
->len
,
1770 (ssize_t
) pos
->mmap_offset
);
1776 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("uuid"));
1777 if (len_index
>= 0) {
1778 struct definition_array
*defarray
;
1779 struct bt_definition
*field
;
1781 uint8_t uuidval
[BABELTRACE_UUID_LEN
];
1783 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1784 assert(field
->declaration
->id
== CTF_TYPE_ARRAY
);
1785 defarray
= container_of(field
, struct definition_array
, p
);
1786 assert(bt_array_len(defarray
) == BABELTRACE_UUID_LEN
);
1788 for (i
= 0; i
< BABELTRACE_UUID_LEN
; i
++) {
1789 struct bt_definition
*elem
;
1791 elem
= bt_array_index(defarray
, i
);
1792 uuidval
[i
] = bt_get_unsigned_int(elem
);
1794 ret
= bt_uuid_compare(td
->uuid
, uuidval
);
1796 fprintf(stderr
, "[error] Unique Universal Identifiers do not match.\n");
1801 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("stream_id"));
1802 if (len_index
>= 0) {
1803 struct bt_definition
*field
;
1805 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1806 stream_id
= bt_get_unsigned_int(field
);
1810 if (!first_packet
&& file_stream
->parent
.stream_id
!= stream_id
) {
1811 fprintf(stderr
, "[error] Stream ID is changing within a stream: expecting %" PRIu64
", but packet has %" PRIu64
"\n",
1813 file_stream
->parent
.stream_id
);
1817 ret
= stream_assign_class(td
, file_stream
, stream_id
);
1822 if (file_stream
->parent
.stream_packet_context
) {
1823 /* Read packet context */
1824 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
1828 fprintf(stderr
, "[error] Unable to read packet context: %s\n", strerror(-ret
));
1831 /* read packet size from header */
1832 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("packet_size"));
1833 if (len_index
>= 0) {
1834 struct bt_definition
*field
;
1836 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1837 packet_index
.packet_size
= bt_get_unsigned_int(field
);
1839 /* Use file size for packet size */
1840 packet_index
.packet_size
= filesize
* CHAR_BIT
;
1843 /* read content size from header */
1844 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("content_size"));
1845 if (len_index
>= 0) {
1846 struct bt_definition
*field
;
1848 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1849 packet_index
.content_size
= bt_get_unsigned_int(field
);
1851 /* Use packet size if non-zero, else file size */
1852 packet_index
.content_size
= packet_index
.packet_size
? : filesize
* CHAR_BIT
;
1855 /* read timestamp begin from header */
1856 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("timestamp_begin"));
1857 if (len_index
>= 0) {
1858 struct bt_definition
*field
;
1860 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1861 packet_index
.ts_cycles
.timestamp_begin
= bt_get_unsigned_int(field
);
1862 if (file_stream
->parent
.stream_class
->trace
->parent
.collection
) {
1863 packet_index
.ts_real
.timestamp_begin
=
1864 ctf_get_real_timestamp(
1865 &file_stream
->parent
,
1866 packet_index
.ts_cycles
.timestamp_begin
);
1870 /* read timestamp end from header */
1871 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("timestamp_end"));
1872 if (len_index
>= 0) {
1873 struct bt_definition
*field
;
1875 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1876 packet_index
.ts_cycles
.timestamp_end
= bt_get_unsigned_int(field
);
1877 if (file_stream
->parent
.stream_class
->trace
->parent
.collection
) {
1878 packet_index
.ts_real
.timestamp_end
=
1879 ctf_get_real_timestamp(
1880 &file_stream
->parent
,
1881 packet_index
.ts_cycles
.timestamp_end
);
1885 /* read events discarded from header */
1886 len_index
= bt_struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("events_discarded"));
1887 if (len_index
>= 0) {
1888 struct bt_definition
*field
;
1890 field
= bt_struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1891 packet_index
.events_discarded
= bt_get_unsigned_int(field
);
1892 packet_index
.events_discarded_len
= bt_get_int_len(field
);
1895 /* read packet_seq_num from header */
1896 len_index
= bt_struct_declaration_lookup_field_index(
1897 file_stream
->parent
.stream_packet_context
->declaration
,
1898 g_quark_from_static_string("packet_seq_num"));
1899 if (len_index
>= 0) {
1900 struct bt_definition
*field
;
1902 field
= bt_struct_definition_get_field_from_index(
1903 file_stream
->parent
.stream_packet_context
,
1905 packet_index
.packet_seq_num
= bt_get_unsigned_int(field
);
1908 /* Use file size for packet size */
1909 packet_index
.packet_size
= filesize
* CHAR_BIT
;
1910 /* Use packet size if non-zero, else file size */
1911 packet_index
.content_size
= packet_index
.packet_size
? : filesize
* CHAR_BIT
;
1914 /* Validate content size and packet size values */
1915 if (packet_index
.content_size
> packet_index
.packet_size
) {
1916 fprintf(stderr
, "[error] Content size (%" PRIu64
" bits) is larger than packet size (%" PRIu64
" bits).\n",
1917 packet_index
.content_size
, packet_index
.packet_size
);
1921 if (packet_index
.packet_size
> ((uint64_t) filesize
- packet_index
.offset
) * CHAR_BIT
) {
1922 fprintf(stderr
, "[error] Packet size (%" PRIu64
" bits) is larger than remaining file size (%" PRIu64
" bits).\n",
1923 packet_index
.packet_size
, ((uint64_t) filesize
- packet_index
.offset
) * CHAR_BIT
);
1927 if (packet_index
.content_size
< pos
->offset
) {
1928 fprintf(stderr
, "[error] Invalid CTF stream: content size is smaller than packet headers.\n");
1932 if ((packet_index
.packet_size
>> LOG2_CHAR_BIT
) == 0) {
1933 fprintf(stderr
, "[error] Invalid CTF stream: packet size needs to be at least one byte\n");
1937 /* Save position after header and context */
1938 packet_index
.data_offset
= pos
->offset
;
1940 /* add index to packet array */
1941 g_array_append_val(file_stream
->pos
.packet_index
, packet_index
);
1943 pos
->mmap_offset
+= packet_index
.packet_size
>> LOG2_CHAR_BIT
;
1947 /* Retry with larger mapping */
1949 if (packet_map_len
== ((filesize
- pos
->mmap_offset
) << LOG2_CHAR_BIT
)) {
1951 * Reached EOF, but still expecting header/context data.
1953 fprintf(stderr
, "[error] Reached end of file, but still expecting header or context fields.\n");
1956 /* Double the mapping len, and retry */
1957 tmp_map_len
= packet_map_len
<< 1;
1958 if (tmp_map_len
>> 1 != packet_map_len
) {
1960 fprintf(stderr
, "[error] Packet mapping length overflow\n");
1963 packet_map_len
= tmp_map_len
;
1968 int create_stream_packet_index(struct ctf_trace
*td
,
1969 struct ctf_file_stream
*file_stream
)
1971 struct ctf_stream_pos
*pos
;
1972 struct stat filestats
;
1975 pos
= &file_stream
->pos
;
1977 ret
= fstat(pos
->fd
, &filestats
);
1981 /* Deal with empty files */
1982 if (!filestats
.st_size
) {
1983 if (file_stream
->parent
.trace_packet_header
1984 || file_stream
->parent
.stream_packet_context
) {
1986 * We expect a trace packet header and/or stream packet
1987 * context. Since a trace needs to have at least one
1988 * packet, empty files are therefore not accepted.
1990 fprintf(stderr
, "[error] Encountered an empty file, but expecting a trace packet header.\n");
1994 * Without trace packet header nor stream packet
1995 * context, a one-packet trace can indeed be empty. This
1996 * is only valid if there is only one stream class: 0.
1998 ret
= stream_assign_class(td
, file_stream
, 0);
2005 for (pos
->mmap_offset
= 0; pos
->mmap_offset
< filestats
.st_size
; ) {
2006 ret
= create_stream_one_packet_index(pos
, td
, file_stream
,
2015 int create_trace_definitions(struct ctf_trace
*td
, struct ctf_stream_definition
*stream
)
2019 if (td
->packet_header_decl
) {
2020 struct bt_definition
*definition
=
2021 td
->packet_header_decl
->p
.definition_new(&td
->packet_header_decl
->p
,
2022 stream
->parent_def_scope
, 0, 0, "trace.packet.header");
2027 stream
->trace_packet_header
=
2028 container_of(definition
, struct definition_struct
, p
);
2029 stream
->parent_def_scope
= stream
->trace_packet_header
->p
.scope
;
2035 fprintf(stderr
, "[error] Unable to create trace definitions: %s\n", strerror(-ret
));
2040 int import_stream_packet_index(struct ctf_trace
*td
,
2041 struct ctf_file_stream
*file_stream
)
2043 struct ctf_stream_pos
*pos
;
2044 struct ctf_packet_index
*ctf_index
= NULL
;
2045 struct ctf_packet_index_file_hdr index_hdr
;
2046 struct packet_index index
;
2047 uint32_t packet_index_len
, index_minor
;
2049 int first_packet
= 1;
2052 pos
= &file_stream
->pos
;
2054 len
= fread(&index_hdr
, sizeof(index_hdr
), 1, pos
->index_fp
);
2056 perror("read index file header");
2060 /* Check the index header */
2061 if (be32toh(index_hdr
.magic
) != CTF_INDEX_MAGIC
) {
2062 fprintf(stderr
, "[error] wrong index magic\n");
2066 if (be32toh(index_hdr
.index_major
) != CTF_INDEX_MAJOR
) {
2067 fprintf(stderr
, "[error] Incompatible index file %" PRIu32
2068 ".%" PRIu32
", supported %d.%d\n",
2069 be32toh(index_hdr
.index_major
),
2070 be32toh(index_hdr
.index_minor
), CTF_INDEX_MAJOR
,
2075 index_minor
= be32toh(index_hdr
.index_minor
);
2077 packet_index_len
= be32toh(index_hdr
.packet_index_len
);
2078 if (packet_index_len
== 0) {
2079 fprintf(stderr
, "[error] Packet index length cannot be 0.\n");
2084 * Allocate the index length found in header, not internal
2087 ctf_index
= g_malloc0(packet_index_len
);
2088 while (fread(ctf_index
, packet_index_len
, 1,
2089 pos
->index_fp
) == 1) {
2091 struct ctf_stream_declaration
*stream
= NULL
;
2093 memset(&index
, 0, sizeof(index
));
2094 index
.offset
= be64toh(ctf_index
->offset
);
2095 index
.packet_size
= be64toh(ctf_index
->packet_size
);
2096 index
.content_size
= be64toh(ctf_index
->content_size
);
2097 index
.ts_cycles
.timestamp_begin
= be64toh(ctf_index
->timestamp_begin
);
2098 index
.ts_cycles
.timestamp_end
= be64toh(ctf_index
->timestamp_end
);
2099 index
.events_discarded
= be64toh(ctf_index
->events_discarded
);
2100 index
.events_discarded_len
= 64;
2101 index
.data_offset
= -1;
2102 stream_id
= be64toh(ctf_index
->stream_id
);
2103 if (index_minor
>= 1) {
2104 index
.stream_instance_id
= be64toh(ctf_index
->stream_instance_id
);
2105 index
.packet_seq_num
= be64toh(ctf_index
->packet_seq_num
);
2108 if (!first_packet
) {
2109 /* add index to packet array */
2110 g_array_append_val(file_stream
->pos
.packet_index
, index
);
2114 file_stream
->parent
.stream_id
= stream_id
;
2115 if (stream_id
< td
->streams
->len
) {
2116 stream
= g_ptr_array_index(td
->streams
, stream_id
);
2119 fprintf(stderr
, "[error] Stream %" PRIu64
2120 " is not declared in metadata.\n",
2125 file_stream
->parent
.stream_class
= stream
;
2126 ret
= create_stream_definitions(td
, &file_stream
->parent
);
2130 /* add index to packet array */
2131 g_array_append_val(file_stream
->pos
.packet_index
, index
);
2134 /* Index containing only the header. */
2135 if (!file_stream
->parent
.stream_class
) {
2148 * Note: many file streams can inherit from the same stream class
2149 * description (metadata).
2152 int ctf_open_file_stream_read(struct ctf_trace
*td
, const char *path
, int flags
,
2153 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2156 int ret
, fd
, closeret
;
2157 struct ctf_file_stream
*file_stream
;
2158 struct stat statbuf
;
2161 fd
= openat(td
->dirfd
, path
, flags
);
2163 perror("File stream openat()");
2168 /* Don't try to mmap subdirectories. Skip them, return success. */
2169 ret
= fstat(fd
, &statbuf
);
2171 perror("File stream fstat()");
2174 if (S_ISDIR(statbuf
.st_mode
)) {
2175 if (strncmp(path
, "index", 5) != 0) {
2176 fprintf(stderr
, "[warning] Skipping directory '%s' "
2177 "found in trace\n", path
);
2182 if (!statbuf
.st_size
) {
2183 /** Skip empty files. */
2185 goto fd_is_empty_file
;
2188 file_stream
= g_new0(struct ctf_file_stream
, 1);
2189 file_stream
->pos
.last_offset
= LAST_OFFSET_POISON
;
2190 file_stream
->pos
.fd
= -1;
2191 file_stream
->pos
.index_fp
= NULL
;
2193 strncpy(file_stream
->parent
.path
, path
, PATH_MAX
);
2194 file_stream
->parent
.path
[PATH_MAX
- 1] = '\0';
2197 file_stream
->pos
.packet_seek
= packet_seek
;
2199 fprintf(stderr
, "[error] packet_seek function undefined.\n");
2204 ret
= ctf_init_pos(&file_stream
->pos
, &td
->parent
, fd
, flags
);
2207 ret
= create_trace_definitions(td
, &file_stream
->parent
);
2211 * For now, only a single clock per trace is supported.
2213 file_stream
->parent
.current_clock
= td
->parent
.single_clock
;
2216 * Allocate the index name for this stream and try to open it.
2218 index_name
= malloc((strlen(path
) + sizeof(INDEX_PATH
)) * sizeof(char));
2220 fprintf(stderr
, "[error] Cannot allocate index filename\n");
2224 snprintf(index_name
, strlen(path
) + sizeof(INDEX_PATH
),
2227 if (bt_faccessat(td
->dirfd
, td
->parent
.path
, index_name
, O_RDONLY
, 0) < 0) {
2228 ret
= create_stream_packet_index(td
, file_stream
);
2230 fprintf(stderr
, "[error] Stream index creation error.\n");
2234 ret
= openat(td
->dirfd
, index_name
, flags
);
2236 perror("Index file openat()");
2240 file_stream
->pos
.index_fp
= fdopen(ret
, "r");
2241 if (!file_stream
->pos
.index_fp
) {
2242 perror("fdopen() error");
2245 ret
= import_stream_packet_index(td
, file_stream
);
2250 ret
= fclose(file_stream
->pos
.index_fp
);
2252 perror("close index");
2258 /* Add stream file to stream class */
2259 g_ptr_array_add(file_stream
->parent
.stream_class
->streams
,
2260 &file_stream
->parent
);
2264 if (file_stream
->pos
.index_fp
) {
2265 ret
= fclose(file_stream
->pos
.index_fp
);
2267 perror("close index");
2270 if (file_stream
->parent
.trace_packet_header
)
2271 bt_definition_unref(&file_stream
->parent
.trace_packet_header
->p
);
2275 closeret
= ctf_fini_pos(&file_stream
->pos
);
2277 fprintf(stderr
, "Error on ctf_fini_pos\n");
2279 g_free(file_stream
);
2283 closeret
= close(fd
);
2285 perror("Error on fd close");
2292 int ctf_open_trace_read(struct ctf_trace
*td
,
2293 const char *path
, int flags
,
2294 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2295 int whence
), FILE *metadata_fp
)
2297 struct ctf_scanner
*scanner
;
2299 struct dirent
*dirent
;
2300 struct dirent
*diriter
;
2306 /* Open trace directory */
2307 td
->dir
= opendir(path
);
2309 fprintf(stderr
, "[error] Unable to open trace directory \"%s\".\n", path
);
2314 td
->dirfd
= open(path
, 0);
2315 if (td
->dirfd
< 0) {
2316 fprintf(stderr
, "[error] Unable to open trace directory file descriptor for path \"%s\".\n", path
);
2317 perror("Trace directory open");
2321 strncpy(td
->parent
.path
, path
, sizeof(td
->parent
.path
));
2322 td
->parent
.path
[sizeof(td
->parent
.path
) - 1] = '\0';
2325 * Keep the metadata file separate.
2326 * Keep scanner object local to the open. We don't support
2327 * incremental metadata append for on-disk traces.
2329 scanner
= ctf_scanner_alloc();
2331 fprintf(stderr
, "[error] Error allocating scanner\n");
2333 goto error_metadata
;
2335 ret
= ctf_trace_metadata_read(td
, metadata_fp
, scanner
, 0);
2336 ctf_scanner_free(scanner
);
2338 if (ret
== -ENOENT
) {
2339 fprintf(stderr
, "[warning] Empty metadata.\n");
2341 fprintf(stderr
, "[warning] Unable to open trace metadata for path \"%s\".\n", path
);
2342 goto error_metadata
;
2346 * Open each stream: for each file, try to open, check magic
2347 * number, and get the stream ID to add to the right location in
2351 dirent_len
= offsetof(struct dirent
, d_name
) +
2352 fpathconf(td
->dirfd
, _PC_NAME_MAX
) + 1;
2354 dirent
= malloc(dirent_len
);
2357 ret
= readdir_r(td
->dir
, dirent
, &diriter
);
2359 fprintf(stderr
, "[error] Readdir error.\n");
2364 /* Ignore hidden files, ., .. and metadata. */
2365 if (!strncmp(diriter
->d_name
, ".", 1)
2366 || !strcmp(diriter
->d_name
, "..")
2367 || !strcmp(diriter
->d_name
, "metadata"))
2370 /* Ignore index files : *.idx */
2371 ext
= strrchr(diriter
->d_name
, '.');
2372 if (ext
&& (!strcmp(ext
, ".idx"))) {
2376 ret
= ctf_open_file_stream_read(td
, diriter
->d_name
,
2377 flags
, packet_seek
);
2379 fprintf(stderr
, "[error] Open file stream error.\n");
2390 closeret
= close(td
->dirfd
);
2392 perror("Error on fd close");
2395 closeret
= closedir(td
->dir
);
2397 perror("Error on closedir");
2404 * ctf_open_trace: Open a CTF trace and index it.
2405 * Note that the user must seek the trace after the open (using the iterator)
2406 * since the index creation read it entirely.
2409 struct bt_trace_descriptor
*ctf_open_trace(const char *path
, int flags
,
2410 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2411 int whence
), FILE *metadata_fp
)
2413 struct ctf_trace
*td
;
2417 * If packet_seek is NULL, we provide our default version.
2420 packet_seek
= ctf_packet_seek
;
2422 td
= g_new0(struct ctf_trace
, 1);
2426 init_trace_descriptor(&td
->parent
);
2428 switch (flags
& O_ACCMODE
) {
2431 fprintf(stderr
, "[error] Path missing for input CTF trace.\n");
2434 ret
= ctf_open_trace_read(td
, path
, flags
, packet_seek
, metadata_fp
);
2439 fprintf(stderr
, "[error] Opening CTF traces for output is not supported yet.\n");
2442 fprintf(stderr
, "[error] Incorrect open flags.\n");
2446 ret
= trace_debug_info_create(td
);
2454 trace_debug_info_destroy(td
);
2461 void ctf_init_mmap_pos(struct ctf_stream_pos
*pos
,
2462 struct bt_mmap_stream
*mmap_info
)
2464 pos
->mmap_offset
= 0;
2465 pos
->packet_size
= 0;
2466 pos
->content_size
= 0;
2467 pos
->content_size_loc
= NULL
;
2468 pos
->fd
= mmap_info
->fd
;
2469 pos
->base_mma
= NULL
;
2473 pos
->prot
= PROT_READ
;
2474 pos
->flags
= MAP_PRIVATE
;
2475 pos
->parent
.rw_table
= read_dispatch_table
;
2476 pos
->parent
.event_cb
= ctf_read_event
;
2477 pos
->priv
= mmap_info
->priv
;
2478 pos
->packet_index
= g_array_new(FALSE
, TRUE
,
2479 sizeof(struct packet_index
));
2483 int prepare_mmap_stream_definition(struct ctf_trace
*td
,
2484 struct ctf_file_stream
*file_stream
,
2485 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2488 struct ctf_stream_declaration
*stream
;
2492 /* Ask for the first packet to get the stream_id. */
2493 packet_seek(&file_stream
->pos
.parent
, 0, SEEK_SET
);
2494 ret
= bt_packet_seek_get_error();
2498 stream_id
= file_stream
->parent
.stream_id
;
2499 if (stream_id
>= td
->streams
->len
) {
2500 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared "
2501 "in metadata.\n", stream_id
);
2505 stream
= g_ptr_array_index(td
->streams
, stream_id
);
2507 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared "
2508 "in metadata.\n", stream_id
);
2512 file_stream
->parent
.stream_class
= stream
;
2513 ret
= create_stream_definitions(td
, &file_stream
->parent
);
2519 int ctf_open_mmap_stream_read(struct ctf_trace
*td
,
2520 struct bt_mmap_stream
*mmap_info
,
2521 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2525 struct ctf_file_stream
*file_stream
;
2527 file_stream
= g_new0(struct ctf_file_stream
, 1);
2528 file_stream
->parent
.stream_id
= -1ULL;
2529 file_stream
->pos
.last_offset
= LAST_OFFSET_POISON
;
2530 ctf_init_mmap_pos(&file_stream
->pos
, mmap_info
);
2532 file_stream
->pos
.packet_seek
= packet_seek
;
2534 ret
= create_trace_definitions(td
, &file_stream
->parent
);
2539 ret
= prepare_mmap_stream_definition(td
, file_stream
, packet_seek
);
2544 * For now, only a single clock per trace is supported.
2546 file_stream
->parent
.current_clock
= td
->parent
.single_clock
;
2548 /* Add stream file to stream class */
2549 g_ptr_array_add(file_stream
->parent
.stream_class
->streams
,
2550 &file_stream
->parent
);
2554 if (file_stream
->parent
.trace_packet_header
)
2555 bt_definition_unref(&file_stream
->parent
.trace_packet_header
->p
);
2557 g_free(file_stream
);
2562 int ctf_open_mmap_trace_read(struct ctf_trace
*td
,
2563 struct bt_mmap_stream_list
*mmap_list
,
2564 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2569 struct bt_mmap_stream
*mmap_info
;
2571 td
->scanner
= ctf_scanner_alloc();
2573 fprintf(stderr
, "[error] Error allocating scanner\n");
2577 ret
= ctf_trace_metadata_read(td
, metadata_fp
, td
->scanner
, 0);
2579 if (ret
== -ENOENT
) {
2580 fprintf(stderr
, "[warning] Empty metadata.\n");
2586 * for each stream, try to open, check magic number, and get the
2587 * stream ID to add to the right location in the stream array.
2589 bt_list_for_each_entry(mmap_info
, &mmap_list
->head
, list
) {
2590 ret
= ctf_open_mmap_stream_read(td
, mmap_info
, packet_seek
);
2592 fprintf(stderr
, "[error] Open file mmap stream error.\n");
2599 ctf_scanner_free(td
->scanner
);
2604 struct bt_trace_descriptor
*ctf_open_mmap_trace(
2605 struct bt_mmap_stream_list
*mmap_list
,
2606 void (*packet_seek
)(struct bt_stream_pos
*pos
, size_t index
,
2610 struct ctf_trace
*td
;
2614 fprintf(stderr
, "[error] No metadata file pointer associated, "
2615 "required for mmap parsing\n");
2619 fprintf(stderr
, "[error] packet_seek function undefined.\n");
2622 td
= g_new0(struct ctf_trace
, 1);
2624 ret
= ctf_open_mmap_trace_read(td
, mmap_list
, packet_seek
, metadata_fp
);
2628 ret
= trace_debug_info_create(td
);
2641 int ctf_append_trace_metadata(struct bt_trace_descriptor
*tdp
,
2644 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
2650 ret
= ctf_trace_metadata_read(td
, metadata_fp
, td
->scanner
, 1);
2653 /* for each stream_class */
2654 for (i
= 0; i
< td
->streams
->len
; i
++) {
2655 struct ctf_stream_declaration
*stream_class
;
2657 stream_class
= g_ptr_array_index(td
->streams
, i
);
2660 /* for each stream */
2661 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
2662 struct ctf_stream_definition
*stream
;
2664 stream
= g_ptr_array_index(stream_class
->streams
, j
);
2667 ret
= copy_event_declarations_stream_class_to_stream(td
,
2668 stream_class
, stream
);
2677 int ctf_convert_index_timestamp(struct bt_trace_descriptor
*tdp
)
2680 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
2682 /* for each stream_class */
2683 for (i
= 0; i
< td
->streams
->len
; i
++) {
2684 struct ctf_stream_declaration
*stream_class
;
2686 stream_class
= g_ptr_array_index(td
->streams
, i
);
2689 /* for each file_stream */
2690 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
2691 struct ctf_stream_definition
*stream
;
2692 struct ctf_stream_pos
*stream_pos
;
2693 struct ctf_file_stream
*cfs
;
2695 stream
= g_ptr_array_index(stream_class
->streams
, j
);
2698 cfs
= container_of(stream
, struct ctf_file_stream
,
2700 stream_pos
= &cfs
->pos
;
2701 if (!stream_pos
->packet_index
)
2704 for (k
= 0; k
< stream_pos
->packet_index
->len
; k
++) {
2705 struct packet_index
*index
;
2707 index
= &g_array_index(stream_pos
->packet_index
,
2708 struct packet_index
, k
);
2709 index
->ts_real
.timestamp_begin
=
2710 ctf_get_real_timestamp(stream
,
2711 index
->ts_cycles
.timestamp_begin
);
2712 index
->ts_real
.timestamp_end
=
2713 ctf_get_real_timestamp(stream
,
2714 index
->ts_cycles
.timestamp_end
);
2722 int ctf_close_file_stream(struct ctf_file_stream
*file_stream
)
2726 ret
= ctf_fini_pos(&file_stream
->pos
);
2728 fprintf(stderr
, "Error on ctf_fini_pos\n");
2731 if (file_stream
->pos
.fd
>= 0) {
2732 ret
= close(file_stream
->pos
.fd
);
2734 perror("Error closing file fd");
2742 int ctf_close_trace(struct bt_trace_descriptor
*tdp
)
2744 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
2750 for (i
= 0; i
< td
->streams
->len
; i
++) {
2751 struct ctf_stream_declaration
*stream
;
2754 stream
= g_ptr_array_index(td
->streams
, i
);
2757 for (j
= 0; j
< stream
->streams
->len
; j
++) {
2758 struct ctf_file_stream
*file_stream
;
2759 file_stream
= container_of(g_ptr_array_index(stream
->streams
, j
),
2760 struct ctf_file_stream
, parent
);
2761 ret
= ctf_close_file_stream(file_stream
);
2767 ctf_destroy_metadata(td
);
2768 ctf_scanner_free(td
->scanner
);
2769 if (td
->dirfd
>= 0) {
2770 ret
= close(td
->dirfd
);
2772 perror("Error closing dirfd");
2777 ret
= closedir(td
->dir
);
2779 perror("Error closedir");
2783 free(td
->metadata_string
);
2784 trace_debug_info_destroy(td
);
2790 void ctf_set_context(struct bt_trace_descriptor
*descriptor
,
2791 struct bt_context
*ctx
)
2793 struct ctf_trace
*td
= container_of(descriptor
, struct ctf_trace
,
2796 td
->parent
.ctx
= ctx
;
2800 void ctf_set_handle(struct bt_trace_descriptor
*descriptor
,
2801 struct bt_trace_handle
*handle
)
2803 struct ctf_trace
*td
= container_of(descriptor
, struct ctf_trace
,
2806 td
->parent
.handle
= handle
;
2810 void __attribute__((constructor
)) ctf_init(void)
2814 ctf_format
.name
= g_quark_from_static_string("ctf");
2815 ret
= bt_register_format(&ctf_format
);
2820 void __attribute__((destructor
)) ctf_exit(void)
2822 bt_unregister_format(&ctf_format
);