4 * LTTng-UST metadata generation
6 * Copyright (C) 2010-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License, version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
30 #include <common/common.h>
31 #include <common/time.h>
33 #include "ust-registry.h"
34 #include "ust-clock.h"
38 #define max_t(type, a, b) ((type) ((a) > (b) ? (a) : (b)))
41 #define NR_CLOCK_OFFSET_SAMPLES 10
43 struct offset_sample
{
44 int64_t offset
; /* correlation offset */
45 uint64_t measure_delta
; /* lower is better */
49 int _lttng_field_statedump(struct ust_registry_session
*session
,
50 const struct ustctl_field
*fields
, size_t nr_fields
,
51 size_t *iter_field
, size_t nesting
);
54 int fls(unsigned int x
)
60 if (!(x
& 0xFFFF0000U
)) {
64 if (!(x
& 0xFF000000U
)) {
68 if (!(x
& 0xF0000000U
)) {
72 if (!(x
& 0xC0000000U
)) {
76 if (!(x
& 0x80000000U
)) {
83 int get_count_order(unsigned int count
)
87 order
= fls(count
) - 1;
88 if (count
& (count
- 1))
94 * Returns offset where to write in metadata array, or negative error value on error.
97 ssize_t
metadata_reserve(struct ust_registry_session
*session
, size_t len
)
99 size_t new_len
= session
->metadata_len
+ len
;
100 size_t new_alloc_len
= new_len
;
101 size_t old_alloc_len
= session
->metadata_alloc_len
;
104 if (new_alloc_len
> (UINT32_MAX
>> 1))
106 if ((old_alloc_len
<< 1) > (UINT32_MAX
>> 1))
109 if (new_alloc_len
> old_alloc_len
) {
113 max_t(size_t, 1U << get_count_order(new_alloc_len
), old_alloc_len
<< 1);
114 newptr
= realloc(session
->metadata
, new_alloc_len
);
117 session
->metadata
= newptr
;
118 /* We zero directly the memory from start of allocation. */
119 memset(&session
->metadata
[old_alloc_len
], 0, new_alloc_len
- old_alloc_len
);
120 session
->metadata_alloc_len
= new_alloc_len
;
122 ret
= session
->metadata_len
;
123 session
->metadata_len
+= len
;
128 int metadata_file_append(struct ust_registry_session
*session
,
129 const char *str
, size_t len
)
133 if (session
->metadata_fd
< 0) {
136 /* Write to metadata file */
137 written
= lttng_write(session
->metadata_fd
, str
, len
);
138 if (written
!= len
) {
145 * We have exclusive access to our metadata buffer (protected by the
146 * ust_lock), so we can do racy operations such as looking for
147 * remaining space left in packet and write, since mutual exclusion
148 * protects us from concurrent writes.
151 int lttng_metadata_printf(struct ust_registry_session
*session
,
152 const char *fmt
, ...)
161 ret
= vasprintf(&str
, fmt
, ap
);
167 offset
= metadata_reserve(session
, len
);
172 memcpy(&session
->metadata
[offset
], str
, len
);
173 ret
= metadata_file_append(session
, str
, len
);
175 PERROR("Error appending to metadata file");
178 DBG3("Append to metadata: \"%s\"", str
);
187 int print_tabs(struct ust_registry_session
*session
, size_t nesting
)
191 for (i
= 0; i
< nesting
; i
++) {
194 ret
= lttng_metadata_printf(session
, " ");
203 void sanitize_ctf_identifier(char *out
, const char *in
)
207 for (i
= 0; i
< LTTNG_UST_SYM_NAME_LEN
; i
++) {
221 int print_escaped_ctf_string(struct ust_registry_session
*session
, const char *string
)
229 while (cur
!= '\0') {
232 ret
= lttng_metadata_printf(session
, "%s", "\\n");
236 ret
= lttng_metadata_printf(session
, "%c", '\\');
239 /* We still print the current char */
242 ret
= lttng_metadata_printf(session
, "%c", cur
);
255 /* Called with session registry mutex held. */
257 int ust_metadata_enum_statedump(struct ust_registry_session
*session
,
258 const char *enum_name
,
260 const struct ustctl_integer_type
*container_type
,
261 const char *field_name
, size_t *iter_field
, size_t nesting
)
263 struct ust_registry_enum
*reg_enum
;
264 const struct ustctl_enum_entry
*entries
;
268 char identifier
[LTTNG_UST_SYM_NAME_LEN
];
271 reg_enum
= ust_registry_lookup_enum_by_id(session
, enum_name
, enum_id
);
273 /* reg_enum can still be used because session registry mutex is held. */
278 entries
= reg_enum
->entries
;
279 nr_entries
= reg_enum
->nr_entries
;
281 ret
= print_tabs(session
, nesting
);
285 ret
= lttng_metadata_printf(session
,
286 "enum : integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u; } {\n",
287 container_type
->size
,
288 container_type
->alignment
,
289 container_type
->signedness
,
290 (container_type
->encoding
== ustctl_encode_none
)
292 : (container_type
->encoding
== ustctl_encode_UTF8
)
295 container_type
->base
);
300 /* Dump all entries */
301 for (i
= 0; i
< nr_entries
; i
++) {
302 const struct ustctl_enum_entry
*entry
= &entries
[i
];
305 ret
= print_tabs(session
, nesting
);
309 ret
= lttng_metadata_printf(session
,
314 len
= strlen(entry
->string
);
315 /* Escape the character '"' */
316 for (j
= 0; j
< len
; j
++) {
317 char c
= entry
->string
[j
];
321 ret
= lttng_metadata_printf(session
,
325 ret
= lttng_metadata_printf(session
,
329 ret
= lttng_metadata_printf(session
,
337 ret
= lttng_metadata_printf(session
, "\"");
342 if (entry
->u
.extra
.options
&
343 USTCTL_UST_ENUM_ENTRY_OPTION_IS_AUTO
) {
344 ret
= lttng_metadata_printf(session
, ",\n");
349 ret
= lttng_metadata_printf(session
,
355 if (entry
->start
.signedness
) {
356 ret
= lttng_metadata_printf(session
,
357 "%lld", (long long) entry
->start
.value
);
359 ret
= lttng_metadata_printf(session
,
360 "%llu", entry
->start
.value
);
366 if (entry
->start
.signedness
== entry
->end
.signedness
&&
367 entry
->start
.value
==
369 ret
= lttng_metadata_printf(session
, ",\n");
371 if (entry
->end
.signedness
) {
372 ret
= lttng_metadata_printf(session
,
374 (long long) entry
->end
.value
);
376 ret
= lttng_metadata_printf(session
,
387 sanitize_ctf_identifier(identifier
, field_name
);
388 ret
= print_tabs(session
, nesting
);
392 ret
= lttng_metadata_printf(session
, "} _%s;\n",
400 int _lttng_variant_statedump(struct ust_registry_session
*session
,
401 const struct ustctl_field
*fields
, size_t nr_fields
,
402 size_t *iter_field
, size_t nesting
)
404 const struct ustctl_field
*variant
= &fields
[*iter_field
];
405 uint32_t nr_choices
, i
;
407 char identifier
[LTTNG_UST_SYM_NAME_LEN
];
409 if (variant
->type
.atype
!= ustctl_atype_variant
) {
413 nr_choices
= variant
->type
.u
.variant
.nr_choices
;
415 sanitize_ctf_identifier(identifier
, variant
->type
.u
.variant
.tag_name
);
416 ret
= print_tabs(session
, nesting
);
420 ret
= lttng_metadata_printf(session
,
427 for (i
= 0; i
< nr_choices
; i
++) {
428 if (*iter_field
>= nr_fields
) {
432 ret
= _lttng_field_statedump(session
,
434 iter_field
, nesting
+ 1);
439 sanitize_ctf_identifier(identifier
, variant
->name
);
440 ret
= print_tabs(session
, nesting
);
444 ret
= lttng_metadata_printf(session
,
455 int _lttng_field_statedump(struct ust_registry_session
*session
,
456 const struct ustctl_field
*fields
, size_t nr_fields
,
457 size_t *iter_field
, size_t nesting
)
460 const char *bo_be
= " byte_order = be;";
461 const char *bo_le
= " byte_order = le;";
462 const char *bo_native
= "";
463 const char *bo_reverse
;
464 const struct ustctl_field
*field
;
466 if (*iter_field
>= nr_fields
) {
470 field
= &fields
[*iter_field
];
472 if (session
->byte_order
== BIG_ENDIAN
) {
478 switch (field
->type
.atype
) {
479 case ustctl_atype_integer
:
480 ret
= print_tabs(session
, nesting
);
484 ret
= lttng_metadata_printf(session
,
485 "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s;\n",
486 field
->type
.u
.basic
.integer
.size
,
487 field
->type
.u
.basic
.integer
.alignment
,
488 field
->type
.u
.basic
.integer
.signedness
,
489 (field
->type
.u
.basic
.integer
.encoding
== ustctl_encode_none
)
491 : (field
->type
.u
.basic
.integer
.encoding
== ustctl_encode_UTF8
)
494 field
->type
.u
.basic
.integer
.base
,
495 field
->type
.u
.basic
.integer
.reverse_byte_order
? bo_reverse
: bo_native
,
499 case ustctl_atype_enum
:
500 ret
= ust_metadata_enum_statedump(session
,
501 field
->type
.u
.basic
.enumeration
.name
,
502 field
->type
.u
.basic
.enumeration
.id
,
503 &field
->type
.u
.basic
.enumeration
.container_type
,
504 field
->name
, iter_field
, nesting
);
506 case ustctl_atype_float
:
507 ret
= print_tabs(session
, nesting
);
511 ret
= lttng_metadata_printf(session
,
512 "floating_point { exp_dig = %u; mant_dig = %u; align = %u;%s } _%s;\n",
513 field
->type
.u
.basic
._float
.exp_dig
,
514 field
->type
.u
.basic
._float
.mant_dig
,
515 field
->type
.u
.basic
._float
.alignment
,
516 field
->type
.u
.basic
.integer
.reverse_byte_order
? bo_reverse
: bo_native
,
520 case ustctl_atype_array
:
522 const struct ustctl_basic_type
*elem_type
;
524 ret
= print_tabs(session
, nesting
);
528 elem_type
= &field
->type
.u
.array
.elem_type
;
529 ret
= lttng_metadata_printf(session
,
530 "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[%u];\n",
531 elem_type
->u
.basic
.integer
.size
,
532 elem_type
->u
.basic
.integer
.alignment
,
533 elem_type
->u
.basic
.integer
.signedness
,
534 (elem_type
->u
.basic
.integer
.encoding
== ustctl_encode_none
)
536 : (elem_type
->u
.basic
.integer
.encoding
== ustctl_encode_UTF8
)
539 elem_type
->u
.basic
.integer
.base
,
540 elem_type
->u
.basic
.integer
.reverse_byte_order
? bo_reverse
: bo_native
,
541 field
->name
, field
->type
.u
.array
.length
);
545 case ustctl_atype_sequence
:
547 const struct ustctl_basic_type
*elem_type
;
548 const struct ustctl_basic_type
*length_type
;
550 elem_type
= &field
->type
.u
.sequence
.elem_type
;
551 length_type
= &field
->type
.u
.sequence
.length_type
;
552 ret
= print_tabs(session
, nesting
);
556 ret
= lttng_metadata_printf(session
,
557 "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } __%s_length;\n",
558 length_type
->u
.basic
.integer
.size
,
559 (unsigned int) length_type
->u
.basic
.integer
.alignment
,
560 length_type
->u
.basic
.integer
.signedness
,
561 (length_type
->u
.basic
.integer
.encoding
== ustctl_encode_none
)
563 : ((length_type
->u
.basic
.integer
.encoding
== ustctl_encode_UTF8
)
566 length_type
->u
.basic
.integer
.base
,
567 length_type
->u
.basic
.integer
.reverse_byte_order
? bo_reverse
: bo_native
,
573 ret
= print_tabs(session
, nesting
);
577 ret
= lttng_metadata_printf(session
,
578 "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[ __%s_length ];\n",
579 elem_type
->u
.basic
.integer
.size
,
580 (unsigned int) elem_type
->u
.basic
.integer
.alignment
,
581 elem_type
->u
.basic
.integer
.signedness
,
582 (elem_type
->u
.basic
.integer
.encoding
== ustctl_encode_none
)
584 : ((elem_type
->u
.basic
.integer
.encoding
== ustctl_encode_UTF8
)
587 elem_type
->u
.basic
.integer
.base
,
588 elem_type
->u
.basic
.integer
.reverse_byte_order
? bo_reverse
: bo_native
,
595 case ustctl_atype_string
:
596 /* Default encoding is UTF8 */
597 ret
= print_tabs(session
, nesting
);
601 ret
= lttng_metadata_printf(session
,
603 field
->type
.u
.basic
.string
.encoding
== ustctl_encode_ASCII
?
604 " { encoding = ASCII; }" : "",
608 case ustctl_atype_variant
:
609 ret
= _lttng_variant_statedump(session
, fields
, nr_fields
, iter_field
, nesting
);
614 case ustctl_atype_struct
:
615 ret
= print_tabs(session
, nesting
);
619 ret
= lttng_metadata_printf(session
,
632 int _lttng_context_metadata_statedump(struct ust_registry_session
*session
,
633 size_t nr_ctx_fields
,
634 struct ustctl_field
*ctx
)
642 if (i
>= nr_ctx_fields
) {
645 ret
= _lttng_field_statedump(session
, ctx
,
646 nr_ctx_fields
, &i
, 2);
655 int _lttng_fields_metadata_statedump(struct ust_registry_session
*session
,
656 struct ust_registry_event
*event
)
662 if (i
>= event
->nr_fields
) {
665 ret
= _lttng_field_statedump(session
, event
->fields
,
666 event
->nr_fields
, &i
, 2);
675 * Should be called with session registry mutex held.
677 int ust_metadata_event_statedump(struct ust_registry_session
*session
,
678 struct ust_registry_channel
*chan
,
679 struct ust_registry_event
*event
)
683 /* Don't dump metadata events */
684 if (chan
->chan_id
== -1U)
687 ret
= lttng_metadata_printf(session
,
691 " stream_id = %u;\n",
698 ret
= lttng_metadata_printf(session
,
700 event
->loglevel_value
);
704 if (event
->model_emf_uri
) {
705 ret
= lttng_metadata_printf(session
,
706 " model.emf.uri = \"%s\";\n",
707 event
->model_emf_uri
);
712 ret
= lttng_metadata_printf(session
,
713 " fields := struct {\n"
718 ret
= _lttng_fields_metadata_statedump(session
, event
);
722 ret
= lttng_metadata_printf(session
,
727 event
->metadata_dumped
= 1;
734 * Should be called with session registry mutex held.
736 int ust_metadata_channel_statedump(struct ust_registry_session
*session
,
737 struct ust_registry_channel
*chan
)
741 /* Don't dump metadata events */
742 if (chan
->chan_id
== -1U)
745 if (!chan
->header_type
)
748 ret
= lttng_metadata_printf(session
,
751 " event.header := %s;\n"
752 " packet.context := struct packet_context;\n",
754 chan
->header_type
== USTCTL_CHANNEL_HEADER_COMPACT
?
755 "struct event_header_compact" :
756 "struct event_header_large");
760 if (chan
->ctx_fields
) {
761 ret
= lttng_metadata_printf(session
,
762 " event.context := struct {\n");
766 ret
= _lttng_context_metadata_statedump(session
,
771 if (chan
->ctx_fields
) {
772 ret
= lttng_metadata_printf(session
,
778 ret
= lttng_metadata_printf(session
,
780 /* Flag success of metadata dump. */
781 chan
->metadata_dumped
= 1;
788 int _lttng_stream_packet_context_declare(struct ust_registry_session
*session
)
790 return lttng_metadata_printf(session
,
791 "struct packet_context {\n"
792 " uint64_clock_monotonic_t timestamp_begin;\n"
793 " uint64_clock_monotonic_t timestamp_end;\n"
794 " uint64_t content_size;\n"
795 " uint64_t packet_size;\n"
796 " uint64_t packet_seq_num;\n"
797 " unsigned long events_discarded;\n"
798 " uint32_t cpu_id;\n"
806 * id 31 is reserved to indicate an extended header.
809 * id: range: 0 - 65534.
810 * id 65535 is reserved to indicate an extended header.
813 int _lttng_event_header_declare(struct ust_registry_session
*session
)
815 return lttng_metadata_printf(session
,
816 "struct event_header_compact {\n"
817 " enum : uint5_t { compact = 0 ... 30, extended = 31 } id;\n"
820 " uint27_clock_monotonic_t timestamp;\n"
824 " uint64_clock_monotonic_t timestamp;\n"
829 "struct event_header_large {\n"
830 " enum : uint16_t { compact = 0 ... 65534, extended = 65535 } id;\n"
833 " uint32_clock_monotonic_t timestamp;\n"
837 " uint64_clock_monotonic_t timestamp;\n"
841 session
->uint32_t_alignment
,
842 session
->uint16_t_alignment
847 * The offset between monotonic and realtime clock can be negative if
848 * the system sets the REALTIME clock to 0 after boot.
851 int measure_single_clock_offset(struct offset_sample
*sample
)
853 uint64_t monotonic_avg
, monotonic
[2], measure_delta
, realtime
;
854 uint64_t tcf
= trace_clock_freq();
855 struct timespec rts
= { 0, 0 };
858 monotonic
[0] = trace_clock_read64();
859 ret
= lttng_clock_gettime(CLOCK_REALTIME
, &rts
);
863 monotonic
[1] = trace_clock_read64();
864 measure_delta
= monotonic
[1] - monotonic
[0];
865 if (measure_delta
> sample
->measure_delta
) {
867 * Discard value if it took longer to read than the best
872 monotonic_avg
= (monotonic
[0] + monotonic
[1]) >> 1;
873 realtime
= (uint64_t) rts
.tv_sec
* tcf
;
874 if (tcf
== NSEC_PER_SEC
) {
875 realtime
+= rts
.tv_nsec
;
877 realtime
+= (uint64_t) rts
.tv_nsec
* tcf
/ NSEC_PER_SEC
;
879 sample
->offset
= (int64_t) realtime
- monotonic_avg
;
880 sample
->measure_delta
= measure_delta
;
885 * Approximation of NTP time of day to clock monotonic correlation,
886 * taken at start of trace. Keep the measurement that took the less time
887 * to complete, thus removing imprecision caused by preemption.
888 * May return a negative offset.
891 int64_t measure_clock_offset(void)
894 struct offset_sample offset_best_sample
= {
896 .measure_delta
= UINT64_MAX
,
899 for (i
= 0; i
< NR_CLOCK_OFFSET_SAMPLES
; i
++) {
900 if (measure_single_clock_offset(&offset_best_sample
)) {
904 return offset_best_sample
.offset
;
908 int print_metadata_session_information(struct ust_registry_session
*registry
)
911 struct ltt_session
*session
= NULL
;
912 char creation_datetime
[ISO8601_LEN
];
915 session
= session_find_by_id(registry
->tracing_id
);
922 /* Print the trace name */
923 ret
= lttng_metadata_printf(registry
, " trace_name = \"");
929 * This is necessary since the creation time is present in the session
930 * name when it is generated.
932 if (session
->has_auto_generated_name
) {
933 ret
= print_escaped_ctf_string(registry
, DEFAULT_SESSION_NAME
);
935 ret
= print_escaped_ctf_string(registry
, session
->name
);
941 ret
= lttng_metadata_printf(registry
, "\";\n");
946 /* Prepare creation time */
947 ret
= time_t_to_ISO8601(creation_datetime
, sizeof(creation_datetime
),
948 session
->creation_time
);
954 /* Output the reste of the information */
955 ret
= lttng_metadata_printf(registry
,
956 " trace_creation_datetime = \"%s\";\n"
957 " hostname = \"%s\";\n",
966 session_put(session
);
973 * Should be called with session registry mutex held.
975 int ust_metadata_session_statedump(struct ust_registry_session
*session
,
980 char uuid_s
[UUID_STR_LEN
],
981 clock_uuid_s
[UUID_STR_LEN
];
986 lttng_uuid_to_str(session
->uuid
, uuid_s
);
989 ret
= lttng_metadata_printf(session
,
990 "/* CTF %u.%u */\n\n",
997 ret
= lttng_metadata_printf(session
,
998 "typealias integer { size = 8; align = %u; signed = false; } := uint8_t;\n"
999 "typealias integer { size = 16; align = %u; signed = false; } := uint16_t;\n"
1000 "typealias integer { size = 32; align = %u; signed = false; } := uint32_t;\n"
1001 "typealias integer { size = 64; align = %u; signed = false; } := uint64_t;\n"
1002 "typealias integer { size = %u; align = %u; signed = false; } := unsigned long;\n"
1003 "typealias integer { size = 5; align = 1; signed = false; } := uint5_t;\n"
1004 "typealias integer { size = 27; align = 1; signed = false; } := uint27_t;\n"
1010 " byte_order = %s;\n"
1011 " packet.header := struct {\n"
1012 " uint32_t magic;\n"
1013 " uint8_t uuid[16];\n"
1014 " uint32_t stream_id;\n"
1015 " uint64_t stream_instance_id;\n"
1018 session
->uint8_t_alignment
,
1019 session
->uint16_t_alignment
,
1020 session
->uint32_t_alignment
,
1021 session
->uint64_t_alignment
,
1022 session
->bits_per_long
,
1023 session
->long_alignment
,
1027 session
->byte_order
== BIG_ENDIAN
? "be" : "le"
1032 ret
= lttng_metadata_printf(session
,
1034 " domain = \"ust\";\n"
1035 " tracer_name = \"lttng-ust\";\n"
1036 " tracer_major = %u;\n"
1037 " tracer_minor = %u;\n"
1038 " tracer_buffering_scheme = \"%s\";\n"
1039 " tracer_buffering_id = %u;\n"
1040 " isa_length = %u;\n",
1043 app
? "pid" : "uid",
1044 app
? (int) app
->uid
: (int) session
->tracing_uid
,
1045 session
->bits_per_long
1050 ret
= print_metadata_session_information(session
);
1055 * If per-application registry, we can output extra information
1056 * about the application.
1059 ret
= lttng_metadata_printf(session
,
1060 " tracer_patchlevel = %u;\n"
1062 " procname = \"%s\";\n",
1063 app
->version
.patchlevel
,
1071 ret
= lttng_metadata_printf(session
,
1078 ret
= lttng_metadata_printf(session
,
1080 " name = \"%s\";\n",
1086 if (!trace_clock_uuid(clock_uuid_s
)) {
1087 ret
= lttng_metadata_printf(session
,
1088 " uuid = \"%s\";\n",
1095 ret
= lttng_metadata_printf(session
,
1096 " description = \"%s\";\n"
1097 " freq = %" PRIu64
"; /* Frequency, in Hz */\n"
1098 " /* clock value offset from Epoch is: offset * (1/freq) */\n"
1099 " offset = %" PRId64
";\n"
1101 trace_clock_description(),
1103 measure_clock_offset()
1108 ret
= lttng_metadata_printf(session
,
1109 "typealias integer {\n"
1110 " size = 27; align = 1; signed = false;\n"
1111 " map = clock.%s.value;\n"
1112 "} := uint27_clock_monotonic_t;\n"
1114 "typealias integer {\n"
1115 " size = 32; align = %u; signed = false;\n"
1116 " map = clock.%s.value;\n"
1117 "} := uint32_clock_monotonic_t;\n"
1119 "typealias integer {\n"
1120 " size = 64; align = %u; signed = false;\n"
1121 " map = clock.%s.value;\n"
1122 "} := uint64_clock_monotonic_t;\n\n",
1124 session
->uint32_t_alignment
,
1126 session
->uint64_t_alignment
,
1132 ret
= _lttng_stream_packet_context_declare(session
);
1136 ret
= _lttng_event_header_declare(session
);