2 * Copyright (C) 2013 Julien Desfossez
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License Version 2 as
6 * published by the Free Software Foundation;
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include <babeltrace/babeltrace.h>
23 #include <babeltrace/ctf/events.h>
24 #include <babeltrace/ctf/callbacks.h>
25 #include <babeltrace/ctf/iterator.h>
37 #include <sys/types.h>
41 #include <lttng/lttng.h>
42 #ifdef LTTNGTOP_MMAP_LIVE
43 #include <lttng/lttngtop-helper.h>
44 #include <babeltrace/lttngtopmmappacketseek.h>
45 #include "mmap-live.h"
46 #endif /* LTTNGTOP_MMAP_LIVE */
48 #include "lttngtoptypes.h"
50 #include "iostreamtop.h"
51 #include "cursesdisplay.h"
53 #include "network-live.h"
55 #define NET_URL_PREFIX "net://"
56 #define NET4_URL_PREFIX "net4://"
57 #define NET6_URL_PREFIX "net6://"
59 #define DEFAULT_FILE_ARRAY_SIZE 1
61 const char *opt_input_path
;
68 struct lttngtop
*copy
;
69 pthread_t display_thread
;
70 pthread_t timer_thread
;
72 unsigned long refresh_display
= 1 * NSEC_PER_SEC
;
73 unsigned long last_display_update
= 0;
74 unsigned long last_event_ts
= 0;
76 /* list of FDs available for being read with snapshots */
77 struct bt_mmap_stream_list mmap_list
;
78 GPtrArray
*lttng_consumer_stream_array
;
79 int sessiond_metadata
, consumerd_metadata
;
80 struct lttng_consumer_local_data
*ctx
= NULL
;
81 /* list of snapshots currently not consumed */
82 GPtrArray
*available_snapshots
;
83 sem_t metadata_available
;
100 static struct poptOption long_options
[] = {
101 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
102 { "help", 'h', POPT_ARG_NONE
, NULL
, OPT_HELP
, NULL
, NULL
},
103 { "textdump", 't', POPT_ARG_NONE
, NULL
, OPT_TEXTDUMP
, NULL
, NULL
},
104 { "child", 'f', POPT_ARG_NONE
, NULL
, OPT_CHILD
, NULL
, NULL
},
105 { "begin", 'b', POPT_ARG_NONE
, NULL
, OPT_BEGIN
, NULL
, NULL
},
106 { "pid", 'p', POPT_ARG_STRING
, &opt_tid
, OPT_PID
, NULL
, NULL
},
107 { "hostname", 'n', POPT_ARG_STRING
, &opt_hostname
, OPT_HOSTNAME
, NULL
, NULL
},
108 { "relay-hostname", 'r', POPT_ARG_STRING
, &opt_relay_hostname
,
109 OPT_RELAY_HOSTNAME
, NULL
, NULL
},
110 { "kprobes", 'k', POPT_ARG_STRING
, &opt_kprobes
, OPT_KPROBES
, NULL
, NULL
},
111 { NULL
, 0, 0, NULL
, 0, NULL
, NULL
},
114 #ifdef LTTNGTOP_MMAP_LIVE
115 static void handle_textdump_sigterm(int signal
)
118 lttng_destroy_session("test");
122 void *refresh_thread(void *p
)
126 sem_post(&pause_sem
);
128 sem_post(&end_trace_sem
);
129 sem_post(&goodtodisplay
);
130 sem_post(&goodtoupdate
);
133 if (!opt_input_path
) {
134 #ifdef LTTNGTOP_MMAP_LIVE
135 mmap_live_flush(mmap_list
);
138 sem_wait(&pause_sem
);
139 sem_post(&pause_sem
);
141 sleep(refresh_display
/NSEC_PER_SEC
);
145 void *ncurses_display(void *p
)
147 unsigned int current_display_index
= 0;
149 sem_wait(&bootstrap
);
151 * Prevent the 1 second delay when we hit ESC
158 sem_wait(&goodtodisplay
);
159 sem_wait(&pause_sem
);
162 sem_post(&pause_sem
);
168 copy
= g_ptr_array_index(copies
, current_display_index
);
170 display(current_display_index
++);
172 sem_post(&goodtoupdate
);
173 sem_post(&pause_sem
);
177 void print_fields(struct bt_ctf_event
*event
)
180 const struct bt_definition
*const * list
;
181 const struct bt_declaration
*l
;
182 const struct bt_definition
*scope
;
183 enum ctf_type_id type
;
186 scope
= bt_ctf_get_top_level_scope(event
, BT_EVENT_FIELDS
);
188 bt_ctf_get_field_list(event
, scope
, &list
, &cnt
);
189 for (i
= 0; i
< cnt
; i
++) {
192 printf("%s = ", bt_ctf_field_name(list
[i
]));
193 l
= bt_ctf_get_decl_from_def(list
[i
]);
194 type
= bt_ctf_field_type(l
);
195 if (type
== CTF_TYPE_INTEGER
) {
196 if (bt_ctf_get_int_signedness(l
) == 0)
197 printf("%" PRIu64
"", bt_ctf_get_uint64(list
[i
]));
199 printf("%" PRId64
"", bt_ctf_get_int64(list
[i
]));
200 } else if (type
== CTF_TYPE_STRING
) {
201 printf("%s", bt_ctf_get_string(list
[i
]));
202 } else if (type
== CTF_TYPE_ARRAY
) {
203 str
= bt_ctf_get_char_array(list
[i
]);
204 if (!bt_ctf_field_get_error() && str
)
211 * hook on each event to check the timestamp and refresh the display if
214 enum bt_cb_ret
print_timestamp(struct bt_ctf_event
*call_data
, void *private_data
)
216 unsigned long timestamp
;
219 uint64_t ts_nsec_start
;
220 int pid
, cpu_id
, tid
;
221 const struct bt_definition
*scope
;
222 const char *hostname
, *procname
;
224 timestamp
= bt_ctf_get_timestamp(call_data
);
226 /* can happen in network live when tracing is idle */
227 if (timestamp
< last_event_ts
)
230 last_event_ts
= timestamp
;
232 start
= format_timestamp(timestamp
);
233 ts_nsec_start
= timestamp
% NSEC_PER_SEC
;
235 pid
= get_context_pid(call_data
);
236 if (pid
== -1ULL && opt_tid
) {
240 tid
= get_context_tid(call_data
);
242 hostname
= get_context_hostname(call_data
);
243 if (opt_tid
|| opt_hostname
) {
244 if (!lookup_filter_tid_list(pid
)) {
245 /* To display when a process of ours in getting scheduled in */
246 if (strcmp(bt_ctf_event_name(call_data
), "sched_switch") == 0) {
249 scope
= bt_ctf_get_top_level_scope(call_data
,
251 next_tid
= bt_ctf_get_int64(bt_ctf_get_field(call_data
,
252 scope
, "_next_tid"));
253 if (bt_ctf_field_get_error()) {
254 fprintf(stderr
, "Missing next_tid field\n");
257 if (!lookup_filter_tid_list(next_tid
)) {
266 cpu_id
= get_cpu_id(call_data
);
267 procname
= get_context_comm(call_data
);
270 delta
= timestamp
- prev_ts
;
273 printf("%02d:%02d:%02d.%09" PRIu64
" (+%" PRIu64
".%09" PRIu64
") %s%s"
274 "(cpu %d) [%s (%d/%d)] %s (",
275 start
.tm_hour
, start
.tm_min
, start
.tm_sec
,
276 ts_nsec_start
, delta
/ NSEC_PER_SEC
,
277 delta
% NSEC_PER_SEC
, (hostname
) ? hostname
: "",
278 (hostname
) ? " ": "", cpu_id
, procname
, pid
, tid
,
279 bt_ctf_event_name(call_data
));
280 print_fields(call_data
);
286 return BT_CB_ERROR_STOP
;
288 return BT_CB_OK_STOP
;
291 enum bt_cb_ret
handle_kprobes(struct bt_ctf_event
*call_data
, void *private_data
)
294 struct kprobes
*kprobe
;
297 for (i
= 0; i
< lttngtop
.kprobes_table
->len
; i
++) {
298 kprobe
= g_ptr_array_index(lttngtop
.kprobes_table
, i
);
299 if (strcmp(bt_ctf_event_name(call_data
), kprobe
->probe_name
) == 0) {
308 * hook on each event to check the timestamp and refresh the display if
311 enum bt_cb_ret
check_timestamp(struct bt_ctf_event
*call_data
, void *private_data
)
313 unsigned long timestamp
;
315 timestamp
= bt_ctf_get_timestamp(call_data
);
316 if (timestamp
== -1ULL)
319 /* can happen in network live when tracing is idle */
320 if (timestamp
< last_event_ts
)
323 last_event_ts
= timestamp
;
325 if (last_display_update
== 0)
326 last_display_update
= timestamp
;
328 if (timestamp
- last_display_update
>= refresh_display
) {
329 sem_wait(&goodtoupdate
);
330 g_ptr_array_add(copies
, get_copy_lttngtop(last_display_update
,
332 sem_post(&goodtodisplay
);
333 sem_post(&bootstrap
);
334 last_display_update
= timestamp
;
339 fprintf(stderr
, "check_timestamp callback error\n");
340 return BT_CB_ERROR_STOP
;
343 return BT_CB_OK_STOP
;
347 * get_perf_counter : get or create and return a perf_counter struct for
348 * either a process or a cpu (only one of the 2 parameters mandatory)
350 struct perfcounter
*get_perf_counter(const char *name
, struct processtop
*proc
,
353 struct perfcounter
*ret
;
363 ret
= g_hash_table_lookup(table
, (gpointer
) name
);
367 ret
= g_new0(struct perfcounter
, 1);
368 /* by default, make it visible in the UI */
370 g_hash_table_insert(table
, (gpointer
) strdup(name
), ret
);
379 void update_perf_value(struct processtop
*proc
, struct cputime
*cpu
,
380 const char *name
, int value
)
382 struct perfcounter
*cpu_perf
, *process_perf
;
384 cpu_perf
= get_perf_counter(name
, NULL
, cpu
);
385 if (cpu_perf
->count
< value
) {
386 process_perf
= get_perf_counter(name
, proc
, NULL
);
387 process_perf
->count
+= value
- cpu_perf
->count
;
388 cpu_perf
->count
= value
;
392 void extract_perf_counter_scope(const struct bt_ctf_event
*event
,
393 const struct bt_definition
*scope
,
394 struct processtop
*proc
,
397 struct bt_definition
const * const *list
= NULL
;
398 const struct bt_definition
*field
;
400 struct perfcounter
*perfcounter
;
408 ret
= bt_ctf_get_field_list(event
, scope
, &list
, &count
);
415 g_hash_table_iter_init(&iter
, global_perf_liszt
);
416 while (g_hash_table_iter_next (&iter
, &key
, (gpointer
) &perfcounter
)) {
417 field
= bt_ctf_get_field(event
, scope
, (char *) key
);
419 int value
= bt_ctf_get_uint64(field
);
420 if (bt_ctf_field_get_error())
422 update_perf_value(proc
, cpu
, (char *) key
, value
);
430 void update_perf_counter(struct processtop
*proc
, const struct bt_ctf_event
*event
)
433 const struct bt_definition
*scope
;
435 cpu
= get_cpu(get_cpu_id(event
));
437 scope
= bt_ctf_get_top_level_scope(event
, BT_STREAM_EVENT_CONTEXT
);
438 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
440 scope
= bt_ctf_get_top_level_scope(event
, BT_STREAM_PACKET_CONTEXT
);
441 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
443 scope
= bt_ctf_get_top_level_scope(event
, BT_EVENT_CONTEXT
);
444 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
447 enum bt_cb_ret
fix_process_table(struct bt_ctf_event
*call_data
,
450 int pid
, tid
, ppid
, vpid
, vtid
, vppid
;
451 char *comm
, *hostname
;
452 struct processtop
*parent
, *child
;
453 unsigned long timestamp
;
455 timestamp
= bt_ctf_get_timestamp(call_data
);
456 if (timestamp
== -1ULL)
459 pid
= get_context_pid(call_data
);
464 tid
= get_context_tid(call_data
);
468 ppid
= get_context_ppid(call_data
);
472 vpid
= get_context_vpid(call_data
);
476 vtid
= get_context_vtid(call_data
);
480 vppid
= get_context_vppid(call_data
);
484 comm
= get_context_comm(call_data
);
489 hostname
= get_context_hostname(call_data
);
491 /* find or create the current process */
492 child
= find_process_tid(<tngtop
, tid
, comm
);
494 child
= add_proc(<tngtop
, tid
, comm
, timestamp
, hostname
);
497 update_proc(child
, pid
, tid
, ppid
, vpid
, vtid
, vppid
, comm
, hostname
);
500 /* find or create the parent */
501 parent
= find_process_tid(<tngtop
, pid
, comm
);
503 parent
= add_proc(<tngtop
, pid
, comm
, timestamp
, hostname
);
508 /* attach the parent to the current process */
509 child
->threadparent
= parent
;
510 add_thread(parent
, child
);
513 update_perf_counter(child
, call_data
);
519 return BT_CB_ERROR_STOP
;
524 copies
= g_ptr_array_new();
525 global_perf_liszt
= g_hash_table_new(g_str_hash
, g_str_equal
);
526 global_filter_list
= g_hash_table_new(g_str_hash
, g_str_equal
);
527 global_host_list
= g_hash_table_new(g_str_hash
, g_str_equal
);
529 sem_init(&goodtodisplay
, 0, 0);
530 sem_init(&goodtoupdate
, 0, 1);
531 sem_init(&timer
, 0, 1);
532 sem_init(&bootstrap
, 0, 0);
533 sem_init(&pause_sem
, 0, 1);
534 sem_init(&end_trace_sem
, 0, 0);
536 reset_global_counters();
538 lttngtop
.nbthreads
= 0;
539 lttngtop
.nbfiles
= 0;
541 lttngtop
.process_hash_table
= g_hash_table_new(g_direct_hash
,
543 lttngtop
.process_table
= g_ptr_array_new();
544 lttngtop
.files_table
= g_ptr_array_new();
545 lttngtop
.cpu_table
= g_ptr_array_new();
552 fprintf(fp
, "LTTngTop %s\n\n", VERSION
);
553 fprintf(fp
, "Usage : lttngtop [OPTIONS] TRACE\n");
554 fprintf(fp
, " TRACE Path to the trace to analyse (-r for network live tracing, nothing for mmap live streaming)\n");
555 fprintf(fp
, " -h, --help This help message\n");
556 fprintf(fp
, " -t, --textdump Display live events in text-only\n");
557 fprintf(fp
, " -p, --pid Comma-separated list of PIDs to display\n");
558 fprintf(fp
, " -f, --child Follow threads associated with selected PIDs\n");
559 fprintf(fp
, " -n, --hostname Comma-separated list of hostnames to display (require hostname context in trace)\n");
560 fprintf(fp
, " -k, --kprobes Comma-separated list of kprobes to insert (same format as lttng enable-event)\n");
561 fprintf(fp
, " -r, --relay-hostname Network live streaming : hostname of the lttng-relayd (default port)\n");
562 fprintf(fp
, " -b, --begin Network live streaming : read the trace for the beginning of the recording\n");
566 * Parse probe options.
567 * Shamelessly stolen from lttng-tools :
568 * src/bin/lttng/commands/enable_events.c
570 static struct kprobes
*parse_probe_opts(char *opt
)
573 char name
[LTTNG_SYMBOL_NAME_LEN
];
574 struct kprobes
*kprobe
;
578 kprobe->probe_addr = 0;
579 kprobe->probe_offset = 0;
580 asprintf(&kprobe->probe_name, "probe_sys_open");
581 asprintf(&kprobe->symbol_name, "sys_open");
589 kprobe
= g_new0(struct kprobes
, 1);
591 /* Check for symbol+offset */
592 ret
= sscanf(opt
, "%[^'+']+%s", name
, s_hex
);
594 ret
= asprintf(&kprobe
->probe_name
, "probe_%s", name
);
595 ret
= asprintf(&kprobe
->symbol_name
, "%s", name
);
597 if (strlen(s_hex
) == 0) {
598 fprintf(stderr
, "Invalid probe offset %s", s_hex
);
602 kprobe
->probe_offset
= strtoul(s_hex
, NULL
, 0);
603 kprobe
->probe_addr
= 0;
607 /* Check for symbol */
608 if (isalpha(name
[0])) {
609 ret
= sscanf(opt
, "%s", name
);
611 ret
= asprintf(&kprobe
->probe_name
, "probe_%s", name
);
612 ret
= asprintf(&kprobe
->symbol_name
, "%s", name
);
613 kprobe
->probe_offset
= 0;
614 kprobe
->probe_addr
= 0;
619 /* Check for address */
620 ret
= sscanf(opt
, "%s", s_hex
);
622 if (strlen(s_hex
) == 0) {
623 fprintf(stderr
, "Invalid probe address %s", s_hex
);
627 ret
= asprintf(&kprobe
->probe_name
, "probe_%s", s_hex
);
628 kprobe
->probe_offset
= 0;
629 kprobe
->probe_addr
= strtoul(s_hex
, NULL
, 0);
641 * Return 0 if caller should continue, < 0 if caller should return
642 * error, > 0 if caller should exit without reporting error.
644 static int parse_options(int argc
, char **argv
)
653 pc
= poptGetContext(NULL
, argc
, (const char **) argv
, long_options
, 0);
654 poptReadDefaultConfig(pc
, 0);
656 while ((opt
= poptGetNextOpt(pc
)) != -1) {
660 ret
= 1; /* exit cleanly */
670 tid_filter_list
= g_hash_table_new(g_str_hash
,
672 tmp_str
= strtok(opt_tid
, ",");
674 tid
= malloc(sizeof(int));
675 *tid
= atoi(tmp_str
);
676 g_hash_table_insert(tid_filter_list
,
677 (gpointer
) tid
, tid
);
678 tmp_str
= strtok(NULL
, ",");
682 /* start reading the live trace from the beginning */
687 tmp_str
= strtok(opt_hostname
, ",");
689 add_hostname_list(tmp_str
, 1);
690 tmp_str
= strtok(NULL
, ",");
693 case OPT_RELAY_HOSTNAME
:
697 lttngtop
.kprobes_table
= g_ptr_array_new();
698 tmp_str
= strtok(opt_kprobes
, ",");
700 struct kprobes
*kprobe
;
702 kprobe
= parse_probe_opts(tmp_str
);
705 lttngtop
.kprobes_table
,
711 tmp_str
= strtok(NULL
, ",");
720 opt_input_path
= poptGetArg(pc
);
729 void iter_trace(struct bt_context
*bt_ctx
)
731 struct bt_ctf_iter
*iter
;
732 struct bt_iter_pos begin_pos
;
733 struct kprobes
*kprobe
;
734 const struct bt_ctf_event
*event
;
738 begin_pos
.type
= BT_SEEK_BEGIN
;
739 iter
= bt_ctf_iter_create(bt_ctx
, &begin_pos
, NULL
);
741 /* at each event, verify the status of the process table */
742 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
745 /* to handle the follow child option */
746 bt_ctf_iter_add_callback(iter
,
747 g_quark_from_static_string("sched_process_fork"),
748 NULL
, 0, handle_sched_process_fork
, NULL
, NULL
, NULL
);
750 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
754 /* at each event check if we need to refresh */
755 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
758 /* to handle the scheduling events */
759 bt_ctf_iter_add_callback(iter
,
760 g_quark_from_static_string("sched_switch"),
761 NULL
, 0, handle_sched_switch
, NULL
, NULL
, NULL
);
762 /* to clean up the process table */
763 bt_ctf_iter_add_callback(iter
,
764 g_quark_from_static_string("sched_process_free"),
765 NULL
, 0, handle_sched_process_free
, NULL
, NULL
, NULL
);
766 /* to get all the process from the statedumps */
767 bt_ctf_iter_add_callback(iter
,
768 g_quark_from_static_string(
769 "lttng_statedump_process_state"),
770 NULL
, 0, handle_statedump_process_state
,
774 bt_ctf_iter_add_callback(iter
,
775 g_quark_from_static_string("exit_syscall"),
776 NULL
, 0, handle_exit_syscall
, NULL
, NULL
, NULL
);
777 bt_ctf_iter_add_callback(iter
,
778 g_quark_from_static_string("sys_write"),
779 NULL
, 0, handle_sys_write
, NULL
, NULL
, NULL
);
780 bt_ctf_iter_add_callback(iter
,
781 g_quark_from_static_string("sys_read"),
782 NULL
, 0, handle_sys_read
, NULL
, NULL
, NULL
);
783 bt_ctf_iter_add_callback(iter
,
784 g_quark_from_static_string("sys_open"),
785 NULL
, 0, handle_sys_open
, NULL
, NULL
, NULL
);
786 bt_ctf_iter_add_callback(iter
,
787 g_quark_from_static_string("sys_close"),
788 NULL
, 0, handle_sys_close
, NULL
, NULL
, NULL
);
789 bt_ctf_iter_add_callback(iter
,
790 g_quark_from_static_string(
791 "lttng_statedump_file_descriptor"),
792 NULL
, 0, handle_statedump_file_descriptor
,
796 if (lttngtop
.kprobes_table
) {
797 for (i
= 0; i
< lttngtop
.kprobes_table
->len
; i
++) {
798 kprobe
= g_ptr_array_index(lttngtop
.kprobes_table
, i
);
799 bt_ctf_iter_add_callback(iter
,
800 g_quark_from_static_string(
802 NULL
, 0, handle_kprobes
,
808 while ((event
= bt_ctf_iter_read_event(iter
)) != NULL
) {
809 if (quit
|| reload_trace
)
811 ret
= bt_iter_next(bt_ctf_get_iter(iter
));
816 /* block until quit, we reached the end of the trace */
817 sem_wait(&end_trace_sem
);
820 bt_ctf_iter_destroy(iter
);
824 * bt_context_add_traces_recursive: Open a trace recursively
825 * (copied from BSD code in converter/babeltrace.c)
827 * Find each trace present in the subdirectory starting from the given
828 * path, and add them to the context. The packet_seek parameter can be
829 * NULL: this specify to use the default format packet_seek.
831 * Return: 0 on success, nonzero on failure.
832 * Unable to open toplevel: failure.
833 * Unable to open some subdirectory or file: warn and continue;
835 int bt_context_add_traces_recursive(struct bt_context
*ctx
, const char *path
,
836 const char *format_str
,
837 void (*packet_seek
)(struct bt_stream_pos
*pos
,
838 size_t offset
, int whence
))
843 char lpath
[PATH_MAX
];
844 char * const paths
[2] = { lpath
, NULL
};
847 if ((strncmp(path
, NET4_URL_PREFIX
, sizeof(NET4_URL_PREFIX
) - 1)) == 0 ||
848 (strncmp(path
, NET6_URL_PREFIX
, sizeof(NET6_URL_PREFIX
) - 1)) == 0 ||
849 (strncmp(path
, NET_URL_PREFIX
, sizeof(NET_URL_PREFIX
) - 1)) == 0) {
850 ret
= bt_context_add_trace(ctx
,
851 path
, format_str
, packet_seek
, NULL
, NULL
);
853 fprintf(stderr
, "[warning] [Context] cannot open trace \"%s\" "
854 "for reading.\n", path
);
855 /* Allow to skip erroneous traces. */
856 ret
= 1; /* partial error */
861 * Need to copy path, because fts_open can change it.
862 * It is the pointer array, not the strings, that are constant.
864 strncpy(lpath
, path
, PATH_MAX
);
865 lpath
[PATH_MAX
- 1] = '\0';
867 tree
= fts_open(paths
, FTS_NOCHDIR
| FTS_LOGICAL
, 0);
869 fprintf(stderr
, "[error] [Context] Cannot traverse \"%s\" for reading.\n",
874 trace_ids
= g_array_new(FALSE
, TRUE
, sizeof(int));
876 while ((node
= fts_read(tree
))) {
879 if (!(node
->fts_info
& FTS_D
))
882 dirfd
= open(node
->fts_accpath
, 0);
884 fprintf(stderr
, "[error] [Context] Unable to open trace "
885 "directory file descriptor.\n");
889 metafd
= openat(dirfd
, "metadata", O_RDONLY
);
907 trace_id
= bt_context_add_trace(ctx
,
908 node
->fts_accpath
, format_str
,
909 packet_seek
, NULL
, NULL
);
911 fprintf(stderr
, "[warning] [Context] opening trace \"%s\" from %s "
912 "for reading.\n", node
->fts_accpath
, path
);
913 /* Allow to skip erroneous traces. */
916 g_array_append_val(trace_ids
, trace_id
);
920 g_array_free(trace_ids
, TRUE
);
927 static int check_field_requirements(const struct bt_ctf_field_decl
*const * field_list
,
928 int field_cnt
, int *tid_check
, int *pid_check
,
929 int *procname_check
, int *ppid_check
)
932 struct perfcounter
*global
;
935 for (j
= 0; j
< field_cnt
; j
++) {
936 name
= bt_ctf_get_decl_field_name(field_list
[j
]);
937 if (*tid_check
== 0) {
938 if (strncmp(name
, "tid", 3) == 0)
941 if (*pid_check
== 0) {
942 if (strncmp(name
, "pid", 3) == 0)
945 if (*ppid_check
== 0) {
946 if (strncmp(name
, "ppid", 4) == 0)
949 if (*procname_check
== 0) {
950 if (strncmp(name
, "procname", 8) == 0)
953 if (strncmp(name
, "perf_", 5) == 0) {
954 global
= g_hash_table_lookup(global_perf_liszt
, (gpointer
) name
);
956 global
= g_new0(struct perfcounter
, 1);
957 /* by default, sort on the first perf context */
958 if (g_hash_table_size(global_perf_liszt
) == 0)
961 g_hash_table_insert(global_perf_liszt
, (gpointer
) strdup(name
), global
);
966 if (*tid_check
== 1 && *pid_check
== 1 && *ppid_check
== 1 &&
967 *procname_check
== 1)
974 * check_requirements: check if the required context informations are available
976 * If each mandatory context information is available for at least in one
977 * event, return 0 otherwise return -1.
979 int check_requirements(struct bt_context
*ctx
)
981 unsigned int i
, evt_cnt
, field_cnt
;
982 struct bt_ctf_event_decl
*const * evt_list
;
983 const struct bt_ctf_field_decl
*const * field_list
;
986 int procname_check
= 0;
990 ret
= bt_ctf_get_event_decl_list(0, ctx
, &evt_list
, &evt_cnt
);
995 for (i
= 0; i
< evt_cnt
; i
++) {
996 bt_ctf_get_decl_fields(evt_list
[i
], BT_STREAM_EVENT_CONTEXT
,
997 &field_list
, &field_cnt
);
998 ret
= check_field_requirements(field_list
, field_cnt
,
999 &tid_check
, &pid_check
, &procname_check
,
1002 bt_ctf_get_decl_fields(evt_list
[i
], BT_EVENT_CONTEXT
,
1003 &field_list
, &field_cnt
);
1004 ret
= check_field_requirements(field_list
, field_cnt
,
1005 &tid_check
, &pid_check
, &procname_check
,
1008 bt_ctf_get_decl_fields(evt_list
[i
], BT_STREAM_PACKET_CONTEXT
,
1009 &field_list
, &field_cnt
);
1010 ret
= check_field_requirements(field_list
, field_cnt
,
1011 &tid_check
, &pid_check
, &procname_check
,
1015 if (tid_check
== 0) {
1017 fprintf(stderr
, "[error] missing tid context information\n");
1019 if (pid_check
== 0) {
1021 fprintf(stderr
, "[error] missing pid context information\n");
1023 if (ppid_check
== 0) {
1025 fprintf(stderr
, "[error] missing ppid context information\n");
1027 if (procname_check
== 0) {
1029 fprintf(stderr
, "[error] missing procname context information\n");
1036 int main(int argc
, char **argv
)
1039 struct bt_context
*bt_ctx
= NULL
;
1042 ret
= parse_options(argc
, argv
);
1044 fprintf(stdout
, "Error parsing options.\n\n");
1047 } else if (ret
> 0) {
1051 if (!opt_input_path
&& !remote_live
) {
1053 #ifdef LTTNGTOP_MMAP_LIVE
1055 signal(SIGTERM
, handle_textdump_sigterm
);
1056 signal(SIGINT
, handle_textdump_sigterm
);
1058 mmap_live_loop(bt_ctx
);
1059 pthread_join(timer_thread
, NULL
);
1061 pthread_join(display_thread
, NULL
);
1063 lttng_stop_tracing("test");
1064 lttng_destroy_session("test");
1068 fprintf(stderr
, "[ERROR] Mmap live support not compiled, specify a "
1069 "trace directory or -r <relayd hostname/IP>\n");
1073 #endif /* LTTNGTOP_MMAP_LIVE */
1074 } else if (!opt_input_path
&& remote_live
) {
1077 ret
= setup_network_live(opt_relay_hostname
, opt_begin
);
1082 ret
= open_trace(&bt_ctx
);
1088 bt_ctx
= bt_context_create();
1089 ret
= bt_context_add_traces_recursive(bt_ctx
, opt_relay_hostname
,
1090 "lttng-live", NULL
);
1092 fprintf(stderr
, "[error] Opening the trace\n");
1098 bt_ctx
= bt_context_create();
1099 ret
= bt_context_add_traces_recursive(bt_ctx
, opt_input_path
, "ctf", NULL
);
1101 fprintf(stderr
, "[error] Opening the trace\n");
1105 ret
= check_requirements(bt_ctx
);
1107 fprintf(stderr
, "[error] some mandatory contexts "
1108 "were missing, exiting.\n");
1112 if (!opt_textdump
) {
1113 pthread_create(&display_thread
, NULL
, ncurses_display
,
1115 pthread_create(&timer_thread
, NULL
, refresh_thread
,
1123 pthread_join(display_thread
, NULL
);
1125 pthread_join(timer_thread
, NULL
);
1131 bt_context_put(bt_ctx
);