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.
21 #include <babeltrace/format.h>
22 #include <babeltrace/ctf/types.h>
23 #include <babeltrace/ctf/metadata.h>
24 #include <babeltrace/babeltrace-internal.h>
25 #include <babeltrace/ctf/events-internal.h>
26 #include <babeltrace/trace-handle-internal.h>
27 #include <babeltrace/context-internal.h>
28 #include <babeltrace/uuid.h>
29 #include <babeltrace/endian.h>
34 #include <sys/types.h>
42 #include "metadata/ctf-scanner.h"
43 #include "metadata/ctf-parser.h"
44 #include "metadata/ctf-ast.h"
45 #include "events-private.h"
46 #include "memstream.h"
49 * We currently simply map a page to read the packet header and packet
50 * context to get the packet length and content length. (in bits)
52 #define MAX_PACKET_HEADER_LEN (getpagesize() * CHAR_BIT)
53 #define WRITE_PACKET_LEN (getpagesize() * 8 * CHAR_BIT)
56 #define min(a, b) (((a) < (b)) ? (a) : (b))
59 #define NSEC_PER_SEC 1000000000ULL
66 uint64_t opt_clock_offset
;
71 struct trace_descriptor
*ctf_open_trace(const char *path
, int flags
,
72 void (*packet_seek
)(struct stream_pos
*pos
, size_t index
,
76 struct trace_descriptor
*ctf_open_mmap_trace(
77 struct mmap_stream_list
*mmap_list
,
78 void (*packet_seek
)(struct stream_pos
*pos
, size_t index
,
82 void ctf_set_context(struct trace_descriptor
*descriptor
,
83 struct bt_context
*ctx
);
85 void ctf_set_handle(struct trace_descriptor
*descriptor
,
86 struct bt_trace_handle
*handle
);
89 void ctf_close_trace(struct trace_descriptor
*descriptor
);
91 uint64_t ctf_timestamp_begin(struct trace_descriptor
*descriptor
,
92 struct bt_trace_handle
*handle
);
94 uint64_t ctf_timestamp_end(struct trace_descriptor
*descriptor
,
95 struct bt_trace_handle
*handle
);
98 rw_dispatch read_dispatch_table
[] = {
99 [ CTF_TYPE_INTEGER
] = ctf_integer_read
,
100 [ CTF_TYPE_FLOAT
] = ctf_float_read
,
101 [ CTF_TYPE_ENUM
] = ctf_enum_read
,
102 [ CTF_TYPE_STRING
] = ctf_string_read
,
103 [ CTF_TYPE_STRUCT
] = ctf_struct_rw
,
104 [ CTF_TYPE_VARIANT
] = ctf_variant_rw
,
105 [ CTF_TYPE_ARRAY
] = ctf_array_read
,
106 [ CTF_TYPE_SEQUENCE
] = ctf_sequence_read
,
110 rw_dispatch write_dispatch_table
[] = {
111 [ CTF_TYPE_INTEGER
] = ctf_integer_write
,
112 [ CTF_TYPE_FLOAT
] = ctf_float_write
,
113 [ CTF_TYPE_ENUM
] = ctf_enum_write
,
114 [ CTF_TYPE_STRING
] = ctf_string_write
,
115 [ CTF_TYPE_STRUCT
] = ctf_struct_rw
,
116 [ CTF_TYPE_VARIANT
] = ctf_variant_rw
,
117 [ CTF_TYPE_ARRAY
] = ctf_array_write
,
118 [ CTF_TYPE_SEQUENCE
] = ctf_sequence_write
,
122 struct format ctf_format
= {
123 .open_trace
= ctf_open_trace
,
124 .open_mmap_trace
= ctf_open_mmap_trace
,
125 .close_trace
= ctf_close_trace
,
126 .set_context
= ctf_set_context
,
127 .set_handle
= ctf_set_handle
,
128 .timestamp_begin
= ctf_timestamp_begin
,
129 .timestamp_end
= ctf_timestamp_end
,
133 uint64_t ctf_timestamp_begin(struct trace_descriptor
*descriptor
,
134 struct bt_trace_handle
*handle
)
136 struct ctf_trace
*tin
;
137 uint64_t begin
= ULLONG_MAX
;
140 tin
= container_of(descriptor
, struct ctf_trace
, parent
);
145 /* for each stream_class */
146 for (i
= 0; i
< tin
->streams
->len
; i
++) {
147 struct ctf_stream_declaration
*stream_class
;
149 stream_class
= g_ptr_array_index(tin
->streams
, i
);
150 /* for each file_stream */
151 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
152 struct ctf_stream_definition
*stream
;
153 struct ctf_file_stream
*cfs
;
154 struct ctf_stream_pos
*stream_pos
;
155 struct packet_index
*index
;
157 stream
= g_ptr_array_index(stream_class
->streams
, j
);
158 cfs
= container_of(stream
, struct ctf_file_stream
,
160 stream_pos
= &cfs
->pos
;
162 index
= &g_array_index(stream_pos
->packet_index
,
163 struct packet_index
, 0);
164 if (index
->timestamp_begin
< begin
)
165 begin
= index
->timestamp_begin
;
176 uint64_t ctf_timestamp_end(struct trace_descriptor
*descriptor
,
177 struct bt_trace_handle
*handle
)
179 struct ctf_trace
*tin
;
183 tin
= container_of(descriptor
, struct ctf_trace
, parent
);
188 /* for each stream_class */
189 for (i
= 0; i
< tin
->streams
->len
; i
++) {
190 struct ctf_stream_declaration
*stream_class
;
192 stream_class
= g_ptr_array_index(tin
->streams
, i
);
193 /* for each file_stream */
194 for (j
= 0; j
< stream_class
->streams
->len
; j
++) {
195 struct ctf_stream_definition
*stream
;
196 struct ctf_file_stream
*cfs
;
197 struct ctf_stream_pos
*stream_pos
;
198 struct packet_index
*index
;
200 stream
= g_ptr_array_index(stream_class
->streams
, j
);
201 cfs
= container_of(stream
, struct ctf_file_stream
,
203 stream_pos
= &cfs
->pos
;
205 index
= &g_array_index(stream_pos
->packet_index
,
207 stream_pos
->packet_index
->len
- 1);
208 if (index
->timestamp_end
> end
)
209 end
= index
->timestamp_end
;
220 * Update stream current timestamp, keep at clock frequency.
223 void ctf_update_timestamp(struct ctf_stream_definition
*stream
,
224 struct definition_integer
*integer_definition
)
226 struct declaration_integer
*integer_declaration
=
227 integer_definition
->declaration
;
228 uint64_t oldval
, newval
, updateval
;
230 if (unlikely(integer_declaration
->len
== 64)) {
231 stream
->timestamp
= integer_definition
->value
._unsigned
;
235 oldval
= stream
->timestamp
;
236 oldval
&= (1ULL << integer_declaration
->len
) - 1;
237 newval
= integer_definition
->value
._unsigned
;
238 /* Test for overflow by comparing low bits */
240 newval
+= 1ULL << integer_declaration
->len
;
241 /* updateval contains old high bits, and new low bits (sum) */
242 updateval
= stream
->timestamp
;
243 updateval
&= ~((1ULL << integer_declaration
->len
) - 1);
245 stream
->prev_timestamp
= stream
->timestamp
;
246 stream
->timestamp
= updateval
;
250 * Print timestamp, rescaling clock frequency to nanoseconds and
251 * applying offsets as needed (unix time).
253 void ctf_print_timestamp(FILE *fp
,
254 struct ctf_stream_definition
*stream
,
257 uint64_t ts_sec
= 0, ts_nsec
;
260 ts_nsec
= ctf_get_timestamp_raw(stream
, timestamp
);
262 ts_nsec
= ctf_get_timestamp(stream
, timestamp
);
265 /* Add command-line offset */
266 ts_sec
+= opt_clock_offset
;
268 ts_sec
+= ts_nsec
/ NSEC_PER_SEC
;
269 ts_nsec
= ts_nsec
% NSEC_PER_SEC
;
271 if (!opt_clock_seconds
) {
273 time_t time_s
= (time_t) ts_sec
;
275 if (!opt_clock_gmt
) {
278 res
= localtime_r(&time_s
, &tm
);
280 fprintf(stderr
, "[warning] Unable to get localtime.\n");
286 res
= gmtime_r(&time_s
, &tm
);
288 fprintf(stderr
, "[warning] Unable to get gmtime.\n");
292 if (opt_clock_date
) {
296 /* Print date and time */
297 res
= strftime(timestr
, sizeof(timestr
),
300 fprintf(stderr
, "[warning] Unable to print ascii time.\n");
303 fprintf(fp
, "%s", timestr
);
305 /* Print time in HH:MM:SS.ns */
306 fprintf(fp
, "%02d:%02d:%02d.%09" PRIu64
,
307 tm
.tm_hour
, tm
.tm_min
, tm
.tm_sec
, ts_nsec
);
311 fprintf(fp
, "%3" PRIu64
".%09" PRIu64
,
319 int ctf_read_event(struct stream_pos
*ppos
, struct ctf_stream_definition
*stream
)
321 struct ctf_stream_pos
*pos
=
322 container_of(ppos
, struct ctf_stream_pos
, parent
);
323 struct ctf_stream_declaration
*stream_class
= stream
->stream_class
;
324 struct ctf_event_definition
*event
;
328 /* We need to check for EOF here for empty files. */
329 if (unlikely(pos
->offset
== EOF
))
332 ctf_pos_get_event(pos
);
334 /* save the current position as a restore point */
335 pos
->last_offset
= pos
->offset
;
336 /* we just read the event, it is consumed when used by the caller */
337 stream
->consumed
= 0;
340 * This is the EOF check after we've advanced the position in
343 if (unlikely(pos
->offset
== EOF
))
345 assert(pos
->offset
< pos
->content_size
);
347 /* Read event header */
348 if (likely(stream
->stream_event_header
)) {
349 struct definition_integer
*integer_definition
;
350 struct definition
*variant
;
352 ret
= generic_rw(ppos
, &stream
->stream_event_header
->p
);
355 /* lookup event id */
356 integer_definition
= lookup_integer(&stream
->stream_event_header
->p
, "id", FALSE
);
357 if (integer_definition
) {
358 id
= integer_definition
->value
._unsigned
;
360 struct definition_enum
*enum_definition
;
362 enum_definition
= lookup_enum(&stream
->stream_event_header
->p
, "id", FALSE
);
363 if (enum_definition
) {
364 id
= enum_definition
->integer
->value
._unsigned
;
368 variant
= lookup_variant(&stream
->stream_event_header
->p
, "v");
370 integer_definition
= lookup_integer(variant
, "id", FALSE
);
371 if (integer_definition
) {
372 id
= integer_definition
->value
._unsigned
;
375 stream
->event_id
= id
;
377 /* lookup timestamp */
378 stream
->has_timestamp
= 0;
379 integer_definition
= lookup_integer(&stream
->stream_event_header
->p
, "timestamp", FALSE
);
380 if (integer_definition
) {
381 ctf_update_timestamp(stream
, integer_definition
);
382 stream
->has_timestamp
= 1;
385 integer_definition
= lookup_integer(variant
, "timestamp", FALSE
);
386 if (integer_definition
) {
387 ctf_update_timestamp(stream
, integer_definition
);
388 stream
->has_timestamp
= 1;
394 /* Read stream-declared event context */
395 if (stream
->stream_event_context
) {
396 ret
= generic_rw(ppos
, &stream
->stream_event_context
->p
);
401 if (unlikely(id
>= stream_class
->events_by_id
->len
)) {
402 fprintf(stderr
, "[error] Event id %" PRIu64
" is outside range.\n", id
);
405 event
= g_ptr_array_index(stream
->events_by_id
, id
);
406 if (unlikely(!event
)) {
407 fprintf(stderr
, "[error] Event id %" PRIu64
" is unknown.\n", id
);
411 /* Read event-declared event context */
412 if (event
->event_context
) {
413 ret
= generic_rw(ppos
, &event
->event_context
->p
);
418 /* Read event payload */
419 if (likely(event
->event_fields
)) {
420 ret
= generic_rw(ppos
, &event
->event_fields
->p
);
428 fprintf(stderr
, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
433 int ctf_write_event(struct stream_pos
*pos
, struct ctf_stream_definition
*stream
)
435 struct ctf_stream_declaration
*stream_class
= stream
->stream_class
;
436 struct ctf_event_definition
*event
;
440 id
= stream
->event_id
;
442 /* print event header */
443 if (likely(stream
->stream_event_header
)) {
444 ret
= generic_rw(pos
, &stream
->stream_event_header
->p
);
449 /* print stream-declared event context */
450 if (stream
->stream_event_context
) {
451 ret
= generic_rw(pos
, &stream
->stream_event_context
->p
);
456 if (unlikely(id
>= stream_class
->events_by_id
->len
)) {
457 fprintf(stderr
, "[error] Event id %" PRIu64
" is outside range.\n", id
);
460 event
= g_ptr_array_index(stream
->events_by_id
, id
);
461 if (unlikely(!event
)) {
462 fprintf(stderr
, "[error] Event id %" PRIu64
" is unknown.\n", id
);
466 /* print event-declared event context */
467 if (event
->event_context
) {
468 ret
= generic_rw(pos
, &event
->event_context
->p
);
473 /* Read and print event payload */
474 if (likely(event
->event_fields
)) {
475 ret
= generic_rw(pos
, &event
->event_fields
->p
);
483 fprintf(stderr
, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
487 void ctf_init_pos(struct ctf_stream_pos
*pos
, int fd
, int open_flags
)
490 pos
->mmap_offset
= 0;
491 pos
->packet_size
= 0;
492 pos
->content_size
= 0;
493 pos
->content_size_loc
= NULL
;
499 pos
->packet_index
= g_array_new(FALSE
, TRUE
,
500 sizeof(struct packet_index
));
502 pos
->packet_index
= NULL
;
503 switch (open_flags
& O_ACCMODE
) {
505 pos
->prot
= PROT_READ
;
506 pos
->flags
= MAP_PRIVATE
;
507 pos
->parent
.rw_table
= read_dispatch_table
;
508 pos
->parent
.event_cb
= ctf_read_event
;
511 pos
->prot
= PROT_WRITE
; /* Write has priority */
512 pos
->flags
= MAP_SHARED
;
513 pos
->parent
.rw_table
= write_dispatch_table
;
514 pos
->parent
.event_cb
= ctf_write_event
;
516 ctf_packet_seek(&pos
->parent
, 0, SEEK_SET
); /* position for write */
523 void ctf_fini_pos(struct ctf_stream_pos
*pos
)
527 if (pos
->prot
== PROT_WRITE
&& pos
->content_size_loc
)
528 *pos
->content_size_loc
= pos
->offset
;
531 ret
= munmap(pos
->base
, pos
->packet_size
/ CHAR_BIT
);
533 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
538 (void) g_array_free(pos
->packet_index
, TRUE
);
542 * for SEEK_CUR: go to next packet.
543 * for SEEK_POS: go to packet numer (index).
545 void ctf_packet_seek(struct stream_pos
*stream_pos
, size_t index
, int whence
)
547 struct ctf_stream_pos
*pos
=
548 container_of(stream_pos
, struct ctf_stream_pos
, parent
);
549 struct ctf_file_stream
*file_stream
=
550 container_of(pos
, struct ctf_file_stream
, pos
);
553 struct packet_index
*packet_index
;
555 if (pos
->prot
== PROT_WRITE
&& pos
->content_size_loc
)
556 *pos
->content_size_loc
= pos
->offset
;
560 ret
= munmap(pos
->base
, pos
->packet_size
/ CHAR_BIT
);
562 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
570 * The caller should never ask for ctf_move_pos across packets,
571 * except to get exactly at the beginning of the next packet.
573 if (pos
->prot
== PROT_WRITE
) {
576 /* The writer will add padding */
577 pos
->mmap_offset
+= WRITE_PACKET_LEN
/ CHAR_BIT
;
580 assert(index
== 0); /* only seek supported for now */
586 pos
->content_size
= -1U; /* Unknown at this point */
587 pos
->packet_size
= WRITE_PACKET_LEN
;
588 off
= posix_fallocate(pos
->fd
, pos
->mmap_offset
,
589 pos
->packet_size
/ CHAR_BIT
);
597 uint64_t events_discarded_diff
;
599 if (pos
->offset
== EOF
) {
602 /* For printing discarded event count */
603 packet_index
= &g_array_index(pos
->packet_index
,
604 struct packet_index
, pos
->cur_index
);
605 events_discarded_diff
= packet_index
->events_discarded
;
606 file_stream
->parent
.prev_timestamp_end
=
607 packet_index
->timestamp_end
;
608 if (pos
->cur_index
> 0) {
609 packet_index
= &g_array_index(pos
->packet_index
,
612 events_discarded_diff
-= packet_index
->events_discarded
;
614 * Deal with 32-bit wrap-around if the
615 * tracer provided a 32-bit field.
617 if (packet_index
->events_discarded_len
== 32) {
618 events_discarded_diff
= (uint32_t) events_discarded_diff
;
621 file_stream
->parent
.events_discarded
= events_discarded_diff
;
622 file_stream
->parent
.prev_timestamp
= file_stream
->parent
.timestamp
;
623 /* The reader will expect us to skip padding */
628 pos
->cur_index
= index
;
629 file_stream
->parent
.prev_timestamp
= 0;
630 file_stream
->parent
.prev_timestamp_end
= 0;
635 if (pos
->cur_index
>= pos
->packet_index
->len
) {
637 * When a stream reaches the end of the
638 * file, we need to show the number of
639 * events discarded ourselves, because
640 * there is no next event scheduled to
641 * be printed in the output.
643 if (file_stream
->parent
.events_discarded
) {
645 * We need to check if we are in trace
646 * read or called from packet indexing.
647 * In this last case, the collection is
648 * not there, so we cannot print the
651 if ((&file_stream
->parent
)->stream_class
->trace
->collection
) {
653 fprintf(stderr
, "[warning] Tracer discarded %" PRIu64
" events at end of stream between [",
654 file_stream
->parent
.events_discarded
);
655 ctf_print_timestamp(stderr
, &file_stream
->parent
,
656 file_stream
->parent
.prev_timestamp
);
657 fprintf(stderr
, "] and [");
658 ctf_print_timestamp(stderr
, &file_stream
->parent
,
659 file_stream
->parent
.prev_timestamp_end
);
660 fprintf(stderr
, "]. You should consider recording a new trace with larger buffers or with fewer events enabled.\n");
663 file_stream
->parent
.events_discarded
= 0;
668 packet_index
= &g_array_index(pos
->packet_index
, struct packet_index
,
670 pos
->mmap_offset
= packet_index
->offset
;
672 /* Lookup context/packet size in index */
673 file_stream
->parent
.timestamp
= packet_index
->timestamp_begin
;
674 pos
->content_size
= packet_index
->content_size
;
675 pos
->packet_size
= packet_index
->packet_size
;
676 if (packet_index
->data_offset
< packet_index
->content_size
) {
677 pos
->offset
= 0; /* will read headers */
678 } else if (packet_index
->data_offset
== packet_index
->content_size
) {
680 pos
->offset
= packet_index
->data_offset
;
682 goto read_next_packet
;
688 /* map new base. Need mapping length from header. */
689 pos
->base
= mmap(NULL
, pos
->packet_size
/ CHAR_BIT
, pos
->prot
,
690 pos
->flags
, pos
->fd
, pos
->mmap_offset
);
691 if (pos
->base
== MAP_FAILED
) {
692 fprintf(stderr
, "[error] mmap error %s.\n",
697 /* update trace_packet_header and stream_packet_context */
698 if (pos
->prot
!= PROT_WRITE
&& file_stream
->parent
.trace_packet_header
) {
699 /* Read packet header */
700 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
703 if (pos
->prot
!= PROT_WRITE
&& file_stream
->parent
.stream_packet_context
) {
704 /* Read packet context */
705 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
711 int packet_metadata(struct ctf_trace
*td
, FILE *fp
)
717 len
= fread(&magic
, sizeof(magic
), 1, fp
);
721 if (magic
== TSDL_MAGIC
) {
723 td
->byte_order
= BYTE_ORDER
;
724 CTF_TRACE_SET_FIELD(td
, byte_order
);
725 } else if (magic
== GUINT32_SWAP_LE_BE(TSDL_MAGIC
)) {
727 td
->byte_order
= (BYTE_ORDER
== BIG_ENDIAN
) ?
728 LITTLE_ENDIAN
: BIG_ENDIAN
;
729 CTF_TRACE_SET_FIELD(td
, byte_order
);
737 * Returns 0 on success, -1 on error.
740 int check_version(unsigned int major
, unsigned int minor
)
755 /* eventually return an error instead of warning */
757 fprintf(stderr
, "[warning] Unsupported CTF specification version %u.%u. Trying anyway.\n",
763 int ctf_open_trace_metadata_packet_read(struct ctf_trace
*td
, FILE *in
,
766 struct metadata_packet_header header
;
767 size_t readlen
, writelen
, toread
;
768 char buf
[4096 + 1]; /* + 1 for debug-mode \0 */
771 readlen
= fread(&header
, header_sizeof(header
), 1, in
);
775 if (td
->byte_order
!= BYTE_ORDER
) {
776 header
.magic
= GUINT32_SWAP_LE_BE(header
.magic
);
777 header
.checksum
= GUINT32_SWAP_LE_BE(header
.checksum
);
778 header
.content_size
= GUINT32_SWAP_LE_BE(header
.content_size
);
779 header
.packet_size
= GUINT32_SWAP_LE_BE(header
.packet_size
);
782 fprintf(stderr
, "[warning] checksum verification not supported yet.\n");
783 if (header
.compression_scheme
) {
784 fprintf(stderr
, "[error] compression (%u) not supported yet.\n",
785 header
.compression_scheme
);
788 if (header
.encryption_scheme
) {
789 fprintf(stderr
, "[error] encryption (%u) not supported yet.\n",
790 header
.encryption_scheme
);
793 if (header
.checksum_scheme
) {
794 fprintf(stderr
, "[error] checksum (%u) not supported yet.\n",
795 header
.checksum_scheme
);
798 if (check_version(header
.major
, header
.minor
) < 0)
800 if (!CTF_TRACE_FIELD_IS_SET(td
, uuid
)) {
801 memcpy(td
->uuid
, header
.uuid
, sizeof(header
.uuid
));
802 CTF_TRACE_SET_FIELD(td
, uuid
);
804 if (babeltrace_uuid_compare(header
.uuid
, td
->uuid
))
808 toread
= (header
.content_size
/ CHAR_BIT
) - header_sizeof(header
);
811 readlen
= fread(buf
, sizeof(char), min(sizeof(buf
) - 1, toread
), in
);
816 if (babeltrace_debug
) {
818 fprintf(stderr
, "[debug] metadata packet read: %s\n",
822 writelen
= fwrite(buf
, sizeof(char), readlen
, out
);
823 if (writelen
< readlen
) {
833 ret
= 0; /* continue reading next packet */
840 toread
= (header
.packet_size
- header
.content_size
) / CHAR_BIT
;
841 ret
= fseek(in
, toread
, SEEK_CUR
);
843 fprintf(stderr
, "[warning] Missing padding at end of file\n");
850 int ctf_open_trace_metadata_stream_read(struct ctf_trace
*td
, FILE **fp
,
859 * Using strlen on *buf instead of size of open_memstream
860 * because its size includes garbage at the end (after final
861 * \0). This is the allocated size, not the actual string size.
863 out
= babeltrace_open_memstream(buf
, &size
);
865 perror("Metadata open_memstream");
869 ret
= ctf_open_trace_metadata_packet_read(td
, in
, out
);
878 /* close to flush the buffer */
879 ret
= babeltrace_close_memstream(buf
, &size
, out
);
881 perror("babeltrace_flush_memstream");
886 /* open for reading */
887 *fp
= babeltrace_fmemopen(*buf
, strlen(*buf
), "rb");
889 perror("Metadata fmemopen");
896 int ctf_open_trace_metadata_read(struct ctf_trace
*td
,
897 void (*packet_seek
)(struct stream_pos
*pos
, size_t index
,
898 int whence
), FILE *metadata_fp
)
900 struct ctf_scanner
*scanner
;
901 struct ctf_file_stream
*metadata_stream
;
906 metadata_stream
= g_new0(struct ctf_file_stream
, 1);
909 metadata_stream
->pos
.packet_seek
= packet_seek
;
911 fprintf(stderr
, "[error] packet_seek function undefined.\n");
919 td
->metadata
= &metadata_stream
->parent
;
920 metadata_stream
->pos
.fd
= openat(td
->dirfd
, "metadata", O_RDONLY
);
921 if (metadata_stream
->pos
.fd
< 0) {
922 fprintf(stderr
, "Unable to open metadata.\n");
923 return metadata_stream
->pos
.fd
;
926 fp
= fdopen(metadata_stream
->pos
.fd
, "r");
928 fprintf(stderr
, "[error] Unable to open metadata stream.\n");
929 perror("Metadata stream open");
934 if (babeltrace_debug
)
937 if (packet_metadata(td
, fp
)) {
938 ret
= ctf_open_trace_metadata_stream_read(td
, &fp
, &buf
);
940 goto end_packet_read
;
942 unsigned int major
, minor
;
945 td
->byte_order
= BYTE_ORDER
;
947 /* Check text-only metadata header and version */
948 nr_items
= fscanf(fp
, "/* CTF %u.%u", &major
, &minor
);
950 fprintf(stderr
, "[warning] Ill-shapen or missing \"/* CTF x.y\" header for text-only metadata.\n");
951 if (check_version(major
, minor
) < 0) {
953 goto end_packet_read
;
958 scanner
= ctf_scanner_alloc(fp
);
960 fprintf(stderr
, "[error] Error allocating scanner\n");
962 goto end_scanner_alloc
;
964 ret
= ctf_scanner_append_ast(scanner
);
966 fprintf(stderr
, "[error] Error creating AST\n");
970 if (babeltrace_debug
) {
971 ret
= ctf_visitor_print_xml(stderr
, 0, &scanner
->ast
->root
);
973 fprintf(stderr
, "[error] Error visiting AST for XML output\n");
978 ret
= ctf_visitor_semantic_check(stderr
, 0, &scanner
->ast
->root
);
980 fprintf(stderr
, "[error] Error in CTF semantic validation %d\n", ret
);
983 ret
= ctf_visitor_construct_metadata(stderr
, 0, &scanner
->ast
->root
,
986 fprintf(stderr
, "[error] Error in CTF metadata constructor %d\n", ret
);
990 ctf_scanner_free(scanner
);
997 close(metadata_stream
->pos
.fd
);
999 g_free(metadata_stream
);
1004 struct ctf_event_definition
*create_event_definitions(struct ctf_trace
*td
,
1005 struct ctf_stream_definition
*stream
,
1006 struct ctf_event_declaration
*event
)
1008 struct ctf_event_definition
*stream_event
= g_new0(struct ctf_event_definition
, 1);
1010 if (event
->context_decl
) {
1011 struct definition
*definition
=
1012 event
->context_decl
->p
.definition_new(&event
->context_decl
->p
,
1013 stream
->parent_def_scope
, 0, 0, "event.context");
1017 stream_event
->event_context
= container_of(definition
,
1018 struct definition_struct
, p
);
1019 stream
->parent_def_scope
= stream_event
->event_context
->p
.scope
;
1021 if (event
->fields_decl
) {
1022 struct definition
*definition
=
1023 event
->fields_decl
->p
.definition_new(&event
->fields_decl
->p
,
1024 stream
->parent_def_scope
, 0, 0, "event.fields");
1028 stream_event
->event_fields
= container_of(definition
,
1029 struct definition_struct
, p
);
1030 stream
->parent_def_scope
= stream_event
->event_fields
->p
.scope
;
1032 stream_event
->stream
= stream
;
1033 return stream_event
;
1036 if (stream_event
->event_fields
)
1037 definition_unref(&stream_event
->event_fields
->p
);
1038 if (stream_event
->event_context
)
1039 definition_unref(&stream_event
->event_context
->p
);
1044 int create_stream_definitions(struct ctf_trace
*td
, struct ctf_stream_definition
*stream
)
1046 struct ctf_stream_declaration
*stream_class
;
1050 if (stream
->stream_definitions_created
)
1053 stream_class
= stream
->stream_class
;
1055 if (stream_class
->packet_context_decl
) {
1056 struct definition
*definition
=
1057 stream_class
->packet_context_decl
->p
.definition_new(&stream_class
->packet_context_decl
->p
,
1058 stream
->parent_def_scope
, 0, 0, "stream.packet.context");
1063 stream
->stream_packet_context
= container_of(definition
,
1064 struct definition_struct
, p
);
1065 stream
->parent_def_scope
= stream
->stream_packet_context
->p
.scope
;
1067 if (stream_class
->event_header_decl
) {
1068 struct definition
*definition
=
1069 stream_class
->event_header_decl
->p
.definition_new(&stream_class
->event_header_decl
->p
,
1070 stream
->parent_def_scope
, 0, 0, "stream.event.header");
1075 stream
->stream_event_header
=
1076 container_of(definition
, struct definition_struct
, p
);
1077 stream
->parent_def_scope
= stream
->stream_event_header
->p
.scope
;
1079 if (stream_class
->event_context_decl
) {
1080 struct definition
*definition
=
1081 stream_class
->event_context_decl
->p
.definition_new(&stream_class
->event_context_decl
->p
,
1082 stream
->parent_def_scope
, 0, 0, "stream.event.context");
1087 stream
->stream_event_context
=
1088 container_of(definition
, struct definition_struct
, p
);
1089 stream
->parent_def_scope
= stream
->stream_event_context
->p
.scope
;
1091 stream
->events_by_id
= g_ptr_array_new();
1092 g_ptr_array_set_size(stream
->events_by_id
, stream_class
->events_by_id
->len
);
1093 for (i
= 0; i
< stream
->events_by_id
->len
; i
++) {
1094 struct ctf_event_declaration
*event
= g_ptr_array_index(stream_class
->events_by_id
, i
);
1095 struct ctf_event_definition
*stream_event
;
1099 stream_event
= create_event_definitions(td
, stream
, event
);
1102 g_ptr_array_index(stream
->events_by_id
, i
) = stream_event
;
1107 for (i
= 0; i
< stream
->events_by_id
->len
; i
++) {
1108 struct ctf_event_definition
*stream_event
= g_ptr_array_index(stream
->events_by_id
, i
);
1110 g_free(stream_event
);
1112 g_ptr_array_free(stream
->events_by_id
, TRUE
);
1114 if (stream
->stream_event_context
)
1115 definition_unref(&stream
->stream_event_context
->p
);
1116 if (stream
->stream_event_header
)
1117 definition_unref(&stream
->stream_event_header
->p
);
1118 if (stream
->stream_packet_context
)
1119 definition_unref(&stream
->stream_packet_context
->p
);
1125 int create_stream_packet_index(struct ctf_trace
*td
,
1126 struct ctf_file_stream
*file_stream
)
1128 struct ctf_stream_declaration
*stream
;
1130 struct ctf_stream_pos
*pos
;
1131 struct stat filestats
;
1132 struct packet_index packet_index
;
1133 int first_packet
= 1;
1136 pos
= &file_stream
->pos
;
1138 ret
= fstat(pos
->fd
, &filestats
);
1142 if (filestats
.st_size
< MAX_PACKET_HEADER_LEN
/ CHAR_BIT
)
1145 for (pos
->mmap_offset
= 0; pos
->mmap_offset
< filestats
.st_size
; ) {
1146 uint64_t stream_id
= 0;
1149 /* unmap old base */
1150 ret
= munmap(pos
->base
, pos
->packet_size
/ CHAR_BIT
);
1152 fprintf(stderr
, "[error] Unable to unmap old base: %s.\n",
1158 /* map new base. Need mapping length from header. */
1159 pos
->base
= mmap(NULL
, MAX_PACKET_HEADER_LEN
/ CHAR_BIT
, PROT_READ
,
1160 MAP_PRIVATE
, pos
->fd
, pos
->mmap_offset
);
1161 pos
->content_size
= MAX_PACKET_HEADER_LEN
; /* Unknown at this point */
1162 pos
->packet_size
= MAX_PACKET_HEADER_LEN
; /* Unknown at this point */
1163 pos
->offset
= 0; /* Position of the packet header */
1165 packet_index
.offset
= pos
->mmap_offset
;
1166 packet_index
.content_size
= 0;
1167 packet_index
.packet_size
= 0;
1168 packet_index
.timestamp_begin
= 0;
1169 packet_index
.timestamp_end
= 0;
1170 packet_index
.events_discarded
= 0;
1172 /* read and check header, set stream id (and check) */
1173 if (file_stream
->parent
.trace_packet_header
) {
1174 /* Read packet header */
1175 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.trace_packet_header
->p
);
1178 len_index
= struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("magic"));
1179 if (len_index
>= 0) {
1180 struct definition
*field
;
1183 field
= struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1184 magic
= get_unsigned_int(field
);
1185 if (magic
!= CTF_MAGIC
) {
1186 fprintf(stderr
, "[error] Invalid magic number 0x%" PRIX64
" at packet %u (file offset %zd).\n",
1188 file_stream
->pos
.packet_index
->len
,
1189 (ssize_t
) pos
->mmap_offset
);
1195 len_index
= struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("uuid"));
1196 if (len_index
>= 0) {
1197 struct definition_array
*defarray
;
1198 struct definition
*field
;
1200 uint8_t uuidval
[BABELTRACE_UUID_LEN
];
1202 field
= struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1203 assert(field
->declaration
->id
== CTF_TYPE_ARRAY
);
1204 defarray
= container_of(field
, struct definition_array
, p
);
1205 assert(array_len(defarray
) == BABELTRACE_UUID_LEN
);
1207 for (i
= 0; i
< BABELTRACE_UUID_LEN
; i
++) {
1208 struct definition
*elem
;
1210 elem
= array_index(defarray
, i
);
1211 uuidval
[i
] = get_unsigned_int(elem
);
1213 ret
= babeltrace_uuid_compare(td
->uuid
, uuidval
);
1215 fprintf(stderr
, "[error] Unique Universal Identifiers do not match.\n");
1221 len_index
= struct_declaration_lookup_field_index(file_stream
->parent
.trace_packet_header
->declaration
, g_quark_from_static_string("stream_id"));
1222 if (len_index
>= 0) {
1223 struct definition
*field
;
1225 field
= struct_definition_get_field_from_index(file_stream
->parent
.trace_packet_header
, len_index
);
1226 stream_id
= get_unsigned_int(field
);
1230 if (!first_packet
&& file_stream
->parent
.stream_id
!= stream_id
) {
1231 fprintf(stderr
, "[error] Stream ID is changing within a stream.\n");
1235 file_stream
->parent
.stream_id
= stream_id
;
1236 if (stream_id
>= td
->streams
->len
) {
1237 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared in metadata.\n", stream_id
);
1240 stream
= g_ptr_array_index(td
->streams
, stream_id
);
1242 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared in metadata.\n", stream_id
);
1245 file_stream
->parent
.stream_class
= stream
;
1246 ret
= create_stream_definitions(td
, &file_stream
->parent
);
1252 if (file_stream
->parent
.stream_packet_context
) {
1253 /* Read packet context */
1254 ret
= generic_rw(&pos
->parent
, &file_stream
->parent
.stream_packet_context
->p
);
1257 /* read content size from header */
1258 len_index
= struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("content_size"));
1259 if (len_index
>= 0) {
1260 struct definition
*field
;
1262 field
= struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1263 packet_index
.content_size
= get_unsigned_int(field
);
1265 /* Use file size for packet size */
1266 packet_index
.content_size
= filestats
.st_size
* CHAR_BIT
;
1269 /* read packet size from header */
1270 len_index
= struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("packet_size"));
1271 if (len_index
>= 0) {
1272 struct definition
*field
;
1274 field
= struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1275 packet_index
.packet_size
= get_unsigned_int(field
);
1277 /* Use content size if non-zero, else file size */
1278 packet_index
.packet_size
= packet_index
.content_size
? : filestats
.st_size
* CHAR_BIT
;
1281 /* read timestamp begin from header */
1282 len_index
= struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("timestamp_begin"));
1283 if (len_index
>= 0) {
1284 struct definition
*field
;
1286 field
= struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1287 packet_index
.timestamp_begin
= get_unsigned_int(field
);
1290 /* read timestamp end from header */
1291 len_index
= struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("timestamp_end"));
1292 if (len_index
>= 0) {
1293 struct definition
*field
;
1295 field
= struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1296 packet_index
.timestamp_end
= get_unsigned_int(field
);
1299 /* read events discarded from header */
1300 len_index
= struct_declaration_lookup_field_index(file_stream
->parent
.stream_packet_context
->declaration
, g_quark_from_static_string("events_discarded"));
1301 if (len_index
>= 0) {
1302 struct definition
*field
;
1304 field
= struct_definition_get_field_from_index(file_stream
->parent
.stream_packet_context
, len_index
);
1305 packet_index
.events_discarded
= get_unsigned_int(field
);
1306 packet_index
.events_discarded_len
= get_int_len(field
);
1309 /* Use file size for packet size */
1310 packet_index
.content_size
= filestats
.st_size
* CHAR_BIT
;
1311 /* Use content size if non-zero, else file size */
1312 packet_index
.packet_size
= packet_index
.content_size
? : filestats
.st_size
* CHAR_BIT
;
1315 /* Validate content size and packet size values */
1316 if (packet_index
.content_size
> packet_index
.packet_size
) {
1317 fprintf(stderr
, "[error] Content size (%" PRIu64
" bits) is larger than packet size (%" PRIu64
" bits).\n",
1318 packet_index
.content_size
, packet_index
.packet_size
);
1322 if (packet_index
.packet_size
> ((uint64_t)filestats
.st_size
- packet_index
.offset
) * CHAR_BIT
) {
1323 fprintf(stderr
, "[error] Packet size (%" PRIu64
" bits) is larger than remaining file size (%" PRIu64
" bits).\n",
1324 packet_index
.content_size
, ((uint64_t)filestats
.st_size
- packet_index
.offset
) * CHAR_BIT
);
1328 /* Save position after header and context */
1329 packet_index
.data_offset
= pos
->offset
;
1331 /* add index to packet array */
1332 g_array_append_val(file_stream
->pos
.packet_index
, packet_index
);
1334 pos
->mmap_offset
+= packet_index
.packet_size
/ CHAR_BIT
;
1337 /* Move pos back to beginning of file */
1338 ctf_packet_seek(&pos
->parent
, 0, SEEK_SET
); /* position for write */
1344 int create_trace_definitions(struct ctf_trace
*td
, struct ctf_stream_definition
*stream
)
1348 if (td
->packet_header_decl
) {
1349 struct definition
*definition
=
1350 td
->packet_header_decl
->p
.definition_new(&td
->packet_header_decl
->p
,
1351 stream
->parent_def_scope
, 0, 0, "trace.packet.header");
1356 stream
->trace_packet_header
=
1357 container_of(definition
, struct definition_struct
, p
);
1358 stream
->parent_def_scope
= stream
->trace_packet_header
->p
.scope
;
1368 * Note: many file streams can inherit from the same stream class
1369 * description (metadata).
1372 int ctf_open_file_stream_read(struct ctf_trace
*td
, const char *path
, int flags
,
1373 void (*packet_seek
)(struct stream_pos
*pos
, size_t index
,
1377 struct ctf_file_stream
*file_stream
;
1379 ret
= openat(td
->dirfd
, path
, flags
);
1381 perror("File stream openat()");
1384 file_stream
= g_new0(struct ctf_file_stream
, 1);
1387 file_stream
->pos
.packet_seek
= packet_seek
;
1389 fprintf(stderr
, "[error] packet_seek function undefined.\n");
1394 ctf_init_pos(&file_stream
->pos
, ret
, flags
);
1395 ret
= create_trace_definitions(td
, &file_stream
->parent
);
1399 * For now, only a single slock is supported.
1401 file_stream
->parent
.current_clock
= td
->single_clock
;
1402 ret
= create_stream_packet_index(td
, file_stream
);
1405 /* Add stream file to stream class */
1406 g_ptr_array_add(file_stream
->parent
.stream_class
->streams
,
1407 &file_stream
->parent
);
1411 if (file_stream
->parent
.trace_packet_header
)
1412 definition_unref(&file_stream
->parent
.trace_packet_header
->p
);
1414 ctf_fini_pos(&file_stream
->pos
);
1415 close(file_stream
->pos
.fd
);
1416 g_free(file_stream
);
1422 int ctf_open_trace_read(struct ctf_trace
*td
,
1423 const char *path
, int flags
,
1424 void (*packet_seek
)(struct stream_pos
*pos
, size_t index
,
1425 int whence
), FILE *metadata_fp
)
1428 struct dirent
*dirent
;
1429 struct dirent
*diriter
;
1434 /* Open trace directory */
1435 td
->dir
= opendir(path
);
1437 fprintf(stderr
, "[error] Unable to open trace directory \"%s\".\n", path
);
1442 td
->dirfd
= open(path
, 0);
1443 if (td
->dirfd
< 0) {
1444 fprintf(stderr
, "[error] Unable to open trace directory file descriptor for path \"%s\".\n", path
);
1445 perror("Trace directory open");
1449 strncpy(td
->path
, path
, sizeof(td
->path
));
1450 td
->path
[sizeof(td
->path
) - 1] = '\0';
1453 * Keep the metadata file separate.
1456 ret
= ctf_open_trace_metadata_read(td
, packet_seek
, metadata_fp
);
1458 fprintf(stderr
, "[warning] Unable to open trace metadata for path \"%s\".\n", path
);
1459 goto error_metadata
;
1463 * Open each stream: for each file, try to open, check magic
1464 * number, and get the stream ID to add to the right location in
1468 dirent_len
= offsetof(struct dirent
, d_name
) +
1469 fpathconf(td
->dirfd
, _PC_NAME_MAX
) + 1;
1471 dirent
= malloc(dirent_len
);
1474 ret
= readdir_r(td
->dir
, dirent
, &diriter
);
1476 fprintf(stderr
, "[error] Readdir error.\n");
1481 /* Ignore hidden files, ., .. and metadata. */
1482 if (!strncmp(diriter
->d_name
, ".", 1)
1483 || !strcmp(diriter
->d_name
, "..")
1484 || !strcmp(diriter
->d_name
, "metadata"))
1486 ret
= ctf_open_file_stream_read(td
, diriter
->d_name
,
1487 flags
, packet_seek
);
1489 fprintf(stderr
, "[error] Open file stream error.\n");
1508 struct trace_descriptor
*ctf_open_trace(const char *path
, int flags
,
1509 void (*packet_seek
)(struct stream_pos
*pos
, size_t index
,
1510 int whence
), FILE *metadata_fp
)
1512 struct ctf_trace
*td
;
1516 * If packet_seek is NULL, we provide our default version.
1519 packet_seek
= ctf_packet_seek
;
1521 td
= g_new0(struct ctf_trace
, 1);
1523 switch (flags
& O_ACCMODE
) {
1526 fprintf(stderr
, "[error] Path missing for input CTF trace.\n");
1529 ret
= ctf_open_trace_read(td
, path
, flags
, packet_seek
, metadata_fp
);
1534 fprintf(stderr
, "[error] Opening CTF traces for output is not supported yet.\n");
1537 fprintf(stderr
, "[error] Incorrect open flags.\n");
1548 void ctf_init_mmap_pos(struct ctf_stream_pos
*pos
,
1549 struct mmap_stream
*mmap_info
)
1551 pos
->mmap_offset
= 0;
1552 pos
->packet_size
= 0;
1553 pos
->content_size
= 0;
1554 pos
->content_size_loc
= NULL
;
1555 pos
->fd
= mmap_info
->fd
;
1560 pos
->packet_index
= NULL
;
1561 pos
->prot
= PROT_READ
;
1562 pos
->flags
= MAP_PRIVATE
;
1563 pos
->parent
.rw_table
= read_dispatch_table
;
1564 pos
->parent
.event_cb
= ctf_read_event
;
1568 int prepare_mmap_stream_definition(struct ctf_trace
*td
,
1569 struct ctf_file_stream
*file_stream
)
1571 struct ctf_stream_declaration
*stream
;
1572 uint64_t stream_id
= 0;
1575 file_stream
->parent
.stream_id
= stream_id
;
1576 if (stream_id
>= td
->streams
->len
) {
1577 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared "
1578 "in metadata.\n", stream_id
);
1582 stream
= g_ptr_array_index(td
->streams
, stream_id
);
1584 fprintf(stderr
, "[error] Stream %" PRIu64
" is not declared "
1585 "in metadata.\n", stream_id
);
1589 file_stream
->parent
.stream_class
= stream
;
1590 ret
= create_stream_definitions(td
, &file_stream
->parent
);
1596 int ctf_open_mmap_stream_read(struct ctf_trace
*td
,
1597 struct mmap_stream
*mmap_info
,
1598 void (*packet_seek
)(struct stream_pos
*pos
, size_t index
,
1602 struct ctf_file_stream
*file_stream
;
1604 file_stream
= g_new0(struct ctf_file_stream
, 1);
1605 ctf_init_mmap_pos(&file_stream
->pos
, mmap_info
);
1607 file_stream
->pos
.packet_seek
= packet_seek
;
1609 ret
= create_trace_definitions(td
, &file_stream
->parent
);
1614 ret
= prepare_mmap_stream_definition(td
, file_stream
);
1618 /* Add stream file to stream class */
1619 g_ptr_array_add(file_stream
->parent
.stream_class
->streams
,
1620 &file_stream
->parent
);
1624 if (file_stream
->parent
.trace_packet_header
)
1625 definition_unref(&file_stream
->parent
.trace_packet_header
->p
);
1627 g_free(file_stream
);
1631 int ctf_open_mmap_trace_read(struct ctf_trace
*td
,
1632 struct mmap_stream_list
*mmap_list
,
1633 void (*packet_seek
)(struct stream_pos
*pos
, size_t index
,
1638 struct mmap_stream
*mmap_info
;
1640 ret
= ctf_open_trace_metadata_read(td
, ctf_packet_seek
, metadata_fp
);
1646 * for each stream, try to open, check magic number, and get the
1647 * stream ID to add to the right location in the stream array.
1649 bt_list_for_each_entry(mmap_info
, &mmap_list
->head
, list
) {
1650 ret
= ctf_open_mmap_stream_read(td
, mmap_info
, packet_seek
);
1652 fprintf(stderr
, "[error] Open file mmap stream error.\n");
1664 struct trace_descriptor
*ctf_open_mmap_trace(
1665 struct mmap_stream_list
*mmap_list
,
1666 void (*packet_seek
)(struct stream_pos
*pos
, size_t index
,
1670 struct ctf_trace
*td
;
1674 fprintf(stderr
, "[error] No metadata file pointer associated, "
1675 "required for mmap parsing\n");
1679 fprintf(stderr
, "[error] packet_seek function undefined.\n");
1682 td
= g_new0(struct ctf_trace
, 1);
1683 ret
= ctf_open_mmap_trace_read(td
, mmap_list
, packet_seek
, metadata_fp
);
1696 void ctf_close_file_stream(struct ctf_file_stream
*file_stream
)
1698 ctf_fini_pos(&file_stream
->pos
);
1699 close(file_stream
->pos
.fd
);
1703 void ctf_close_trace(struct trace_descriptor
*tdp
)
1705 struct ctf_trace
*td
= container_of(tdp
, struct ctf_trace
, parent
);
1709 for (i
= 0; i
< td
->streams
->len
; i
++) {
1710 struct ctf_stream_declaration
*stream
;
1713 stream
= g_ptr_array_index(td
->streams
, i
);
1716 for (j
= 0; j
< stream
->streams
->len
; j
++) {
1717 struct ctf_file_stream
*file_stream
;
1718 file_stream
= container_of(g_ptr_array_index(stream
->streams
, j
), struct ctf_file_stream
, parent
);
1719 ctf_close_file_stream(file_stream
);
1723 g_ptr_array_free(td
->streams
, TRUE
);
1726 if (td
->event_declarations
) {
1727 for (i
= 0; i
< td
->event_declarations
->len
; i
++) {
1728 struct bt_ctf_event_decl
*event
;
1730 event
= g_ptr_array_index(td
->event_declarations
, i
);
1731 if (event
->context_decl
)
1732 g_ptr_array_free(event
->context_decl
, TRUE
);
1733 if (event
->fields_decl
)
1734 g_ptr_array_free(event
->fields_decl
, TRUE
);
1735 if (event
->packet_header_decl
)
1736 g_ptr_array_free(event
->packet_header_decl
, TRUE
);
1737 if (event
->event_context_decl
)
1738 g_ptr_array_free(event
->event_context_decl
, TRUE
);
1739 if (event
->event_header_decl
)
1740 g_ptr_array_free(event
->event_header_decl
, TRUE
);
1741 if (event
->packet_context_decl
)
1742 g_ptr_array_free(event
->packet_context_decl
, TRUE
);
1745 g_ptr_array_free(td
->event_declarations
, TRUE
);
1752 void ctf_set_context(struct trace_descriptor
*descriptor
,
1753 struct bt_context
*ctx
)
1755 struct ctf_trace
*td
= container_of(descriptor
, struct ctf_trace
,
1762 void ctf_set_handle(struct trace_descriptor
*descriptor
,
1763 struct bt_trace_handle
*handle
)
1765 struct ctf_trace
*td
= container_of(descriptor
, struct ctf_trace
,
1768 td
->handle
= handle
;
1771 void __attribute__((constructor
)) ctf_init(void)
1775 ctf_format
.name
= g_quark_from_static_string("ctf");
1776 ret
= bt_register_format(&ctf_format
);
1780 /* TODO: finalize */