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 #include "lttng-index.h"
57 #define DEFAULT_FILE_ARRAY_SIZE 1
59 const char *opt_input_path
;
60 static int opt_textdump
;
66 struct lttngtop
*copy
;
67 pthread_t display_thread
;
68 pthread_t timer_thread
;
70 unsigned long refresh_display
= 1 * NSEC_PER_SEC
;
71 unsigned long last_display_update
= 0;
72 unsigned long last_event_ts
= 0;
74 /* list of FDs available for being read with snapshots */
75 struct bt_mmap_stream_list mmap_list
;
76 GPtrArray
*lttng_consumer_stream_array
;
77 int sessiond_metadata
, consumerd_metadata
;
78 struct lttng_consumer_local_data
*ctx
= NULL
;
79 /* list of snapshots currently not consumed */
80 GPtrArray
*available_snapshots
;
81 sem_t metadata_available
;
84 int last_textdump_print_newline
= 1;
98 static struct poptOption long_options
[] = {
99 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
100 { "help", 'h', POPT_ARG_NONE
, NULL
, OPT_HELP
, NULL
, NULL
},
101 { "textdump", 't', POPT_ARG_NONE
, NULL
, OPT_TEXTDUMP
, NULL
, NULL
},
102 { "child", 'f', POPT_ARG_NONE
, NULL
, OPT_CHILD
, NULL
, NULL
},
103 { "begin", 'b', POPT_ARG_NONE
, NULL
, OPT_BEGIN
, NULL
, NULL
},
104 { "pid", 'p', POPT_ARG_STRING
, &opt_tid
, OPT_PID
, NULL
, NULL
},
105 { "hostname", 'n', POPT_ARG_STRING
, &opt_hostname
, OPT_HOSTNAME
, NULL
, NULL
},
106 { "relay-hostname", 'r', POPT_ARG_STRING
, &opt_relay_hostname
,
107 OPT_RELAY_HOSTNAME
, NULL
, NULL
},
108 { "kprobes", 'k', POPT_ARG_STRING
, &opt_kprobes
, OPT_KPROBES
, NULL
, NULL
},
109 { NULL
, 0, 0, NULL
, 0, NULL
, NULL
},
112 #ifdef LTTNGTOP_MMAP_LIVE
113 static void handle_textdump_sigterm(int signal
)
116 lttng_destroy_session("test");
120 void *refresh_thread(void *p
)
124 sem_post(&pause_sem
);
126 sem_post(&end_trace_sem
);
127 sem_post(&goodtodisplay
);
128 sem_post(&goodtoupdate
);
131 if (!opt_input_path
) {
132 #ifdef LTTNGTOP_MMAP_LIVE
133 mmap_live_flush(mmap_list
);
136 sem_wait(&pause_sem
);
137 sem_post(&pause_sem
);
139 sleep(refresh_display
/NSEC_PER_SEC
);
143 void *ncurses_display(void *p
)
145 unsigned int current_display_index
= 0;
147 sem_wait(&bootstrap
);
149 * Prevent the 1 second delay when we hit ESC
156 sem_wait(&goodtodisplay
);
157 sem_wait(&pause_sem
);
160 sem_post(&pause_sem
);
166 copy
= g_ptr_array_index(copies
, current_display_index
);
168 display(current_display_index
++);
170 sem_post(&goodtoupdate
);
171 sem_post(&pause_sem
);
175 void print_fields(struct bt_ctf_event
*event
)
178 const struct bt_definition
*const * list
;
179 const struct bt_declaration
*l
;
180 const struct bt_definition
*scope
;
181 enum ctf_type_id type
;
184 scope
= bt_ctf_get_top_level_scope(event
, BT_EVENT_FIELDS
);
186 bt_ctf_get_field_list(event
, scope
, &list
, &cnt
);
187 for (i
= 0; i
< cnt
; i
++) {
190 printf("%s = ", bt_ctf_field_name(list
[i
]));
191 l
= bt_ctf_get_decl_from_def(list
[i
]);
192 type
= bt_ctf_field_type(l
);
193 if (type
== CTF_TYPE_INTEGER
) {
194 if (bt_ctf_get_int_signedness(l
) == 0)
195 printf("%" PRIu64
"", bt_ctf_get_uint64(list
[i
]));
197 printf("%" PRId64
"", bt_ctf_get_int64(list
[i
]));
198 } else if (type
== CTF_TYPE_STRING
) {
199 printf("%s", bt_ctf_get_string(list
[i
]));
200 } else if (type
== CTF_TYPE_ARRAY
) {
201 str
= bt_ctf_get_char_array(list
[i
]);
202 if (!bt_ctf_field_get_error() && str
)
209 * hook on each event to check the timestamp and refresh the display if
212 enum bt_cb_ret
print_timestamp(struct bt_ctf_event
*call_data
, void *private_data
)
214 unsigned long timestamp
;
216 uint64_t ts_nsec_start
;
219 const struct bt_definition
*scope
;
220 const char *hostname
, *procname
;
222 timestamp
= bt_ctf_get_timestamp(call_data
);
224 /* can happen in network live when tracing is idle */
225 if (timestamp
< last_event_ts
)
228 last_event_ts
= timestamp
;
230 start
= format_timestamp(timestamp
);
231 ts_nsec_start
= timestamp
% NSEC_PER_SEC
;
233 pid
= get_context_pid(call_data
);
234 if (pid
== -1ULL && opt_tid
) {
238 hostname
= get_context_hostname(call_data
);
239 if (opt_tid
|| opt_hostname
)
240 if (!lookup_filter_tid_list(pid
))
243 cpu_id
= get_cpu_id(call_data
);
244 procname
= get_context_comm(call_data
);
246 if ((strcmp(bt_ctf_event_name(call_data
), "exit_syscall") == 0) &&
247 !last_textdump_print_newline
) {
248 scope
= bt_ctf_get_top_level_scope(call_data
,
250 syscall_ret
= bt_ctf_get_int64(bt_ctf_get_field(call_data
,
252 printf("= %ld\n", syscall_ret
);
253 last_textdump_print_newline
= 1;
255 /* we might have lost the exit_syscall event, so need to
256 * print the newline in this case */
257 if (last_textdump_print_newline
== 0)
259 printf("%02d:%02d:%02d.%09" PRIu64
" (%s) (cpu %d) [%s (%d)] %s (",
260 start
.tm_hour
, start
.tm_min
, start
.tm_sec
,
261 ts_nsec_start
, hostname
, cpu_id
, procname
, pid
,
262 bt_ctf_event_name(call_data
));
263 print_fields(call_data
);
265 if (strncmp(bt_ctf_event_name(call_data
), "sys_", 4) != 0) {
267 last_textdump_print_newline
= 1;
269 last_textdump_print_newline
= 0;
276 return BT_CB_ERROR_STOP
;
278 return BT_CB_OK_STOP
;
281 enum bt_cb_ret
handle_kprobes(struct bt_ctf_event
*call_data
, void *private_data
)
284 struct kprobes
*kprobe
;
287 for (i
= 0; i
< lttngtop
.kprobes_table
->len
; i
++) {
288 kprobe
= g_ptr_array_index(lttngtop
.kprobes_table
, i
);
289 if (strcmp(bt_ctf_event_name(call_data
), kprobe
->probe_name
) == 0) {
298 * hook on each event to check the timestamp and refresh the display if
301 enum bt_cb_ret
check_timestamp(struct bt_ctf_event
*call_data
, void *private_data
)
303 unsigned long timestamp
;
305 timestamp
= bt_ctf_get_timestamp(call_data
);
306 if (timestamp
== -1ULL)
309 /* can happen in network live when tracing is idle */
310 if (timestamp
< last_event_ts
)
313 last_event_ts
= timestamp
;
315 if (last_display_update
== 0)
316 last_display_update
= timestamp
;
318 if (timestamp
- last_display_update
>= refresh_display
) {
319 sem_wait(&goodtoupdate
);
320 g_ptr_array_add(copies
, get_copy_lttngtop(last_display_update
,
322 sem_post(&goodtodisplay
);
323 sem_post(&bootstrap
);
324 last_display_update
= timestamp
;
329 fprintf(stderr
, "check_timestamp callback error\n");
330 return BT_CB_ERROR_STOP
;
333 return BT_CB_OK_STOP
;
337 * get_perf_counter : get or create and return a perf_counter struct for
338 * either a process or a cpu (only one of the 2 parameters mandatory)
340 struct perfcounter
*get_perf_counter(const char *name
, struct processtop
*proc
,
343 struct perfcounter
*ret
;
353 ret
= g_hash_table_lookup(table
, (gpointer
) name
);
357 ret
= g_new0(struct perfcounter
, 1);
358 /* by default, make it visible in the UI */
360 g_hash_table_insert(table
, (gpointer
) strdup(name
), ret
);
369 void update_perf_value(struct processtop
*proc
, struct cputime
*cpu
,
370 const char *name
, int value
)
372 struct perfcounter
*cpu_perf
, *process_perf
;
374 cpu_perf
= get_perf_counter(name
, NULL
, cpu
);
375 if (cpu_perf
->count
< value
) {
376 process_perf
= get_perf_counter(name
, proc
, NULL
);
377 process_perf
->count
+= value
- cpu_perf
->count
;
378 cpu_perf
->count
= value
;
382 void extract_perf_counter_scope(const struct bt_ctf_event
*event
,
383 const struct bt_definition
*scope
,
384 struct processtop
*proc
,
387 struct bt_definition
const * const *list
= NULL
;
388 const struct bt_definition
*field
;
390 struct perfcounter
*perfcounter
;
398 ret
= bt_ctf_get_field_list(event
, scope
, &list
, &count
);
405 g_hash_table_iter_init(&iter
, global_perf_liszt
);
406 while (g_hash_table_iter_next (&iter
, &key
, (gpointer
) &perfcounter
)) {
407 field
= bt_ctf_get_field(event
, scope
, (char *) key
);
409 int value
= bt_ctf_get_uint64(field
);
410 if (bt_ctf_field_get_error())
412 update_perf_value(proc
, cpu
, (char *) key
, value
);
420 void update_perf_counter(struct processtop
*proc
, const struct bt_ctf_event
*event
)
423 const struct bt_definition
*scope
;
425 cpu
= get_cpu(get_cpu_id(event
));
427 scope
= bt_ctf_get_top_level_scope(event
, BT_STREAM_EVENT_CONTEXT
);
428 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
430 scope
= bt_ctf_get_top_level_scope(event
, BT_STREAM_PACKET_CONTEXT
);
431 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
433 scope
= bt_ctf_get_top_level_scope(event
, BT_EVENT_CONTEXT
);
434 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
437 enum bt_cb_ret
fix_process_table(struct bt_ctf_event
*call_data
,
440 int pid
, tid
, ppid
, vpid
, vtid
, vppid
;
441 char *comm
, *hostname
;
442 struct processtop
*parent
, *child
;
443 unsigned long timestamp
;
445 timestamp
= bt_ctf_get_timestamp(call_data
);
446 if (timestamp
== -1ULL)
449 pid
= get_context_pid(call_data
);
454 tid
= get_context_tid(call_data
);
458 ppid
= get_context_ppid(call_data
);
462 vpid
= get_context_vpid(call_data
);
466 vtid
= get_context_vtid(call_data
);
470 vppid
= get_context_vppid(call_data
);
474 comm
= get_context_comm(call_data
);
479 hostname
= get_context_hostname(call_data
);
481 /* find or create the current process */
482 child
= find_process_tid(<tngtop
, tid
, comm
);
484 child
= add_proc(<tngtop
, tid
, comm
, timestamp
, hostname
);
487 update_proc(child
, pid
, tid
, ppid
, vpid
, vtid
, vppid
, comm
, hostname
);
490 /* find or create the parent */
491 parent
= find_process_tid(<tngtop
, pid
, comm
);
493 parent
= add_proc(<tngtop
, pid
, comm
, timestamp
, hostname
);
498 /* attach the parent to the current process */
499 child
->threadparent
= parent
;
500 add_thread(parent
, child
);
503 update_perf_counter(child
, call_data
);
509 return BT_CB_ERROR_STOP
;
514 copies
= g_ptr_array_new();
515 global_perf_liszt
= g_hash_table_new(g_str_hash
, g_str_equal
);
516 global_filter_list
= g_hash_table_new(g_str_hash
, g_str_equal
);
517 global_host_list
= g_hash_table_new(g_str_hash
, g_str_equal
);
519 sem_init(&goodtodisplay
, 0, 0);
520 sem_init(&goodtoupdate
, 0, 1);
521 sem_init(&timer
, 0, 1);
522 sem_init(&bootstrap
, 0, 0);
523 sem_init(&pause_sem
, 0, 1);
524 sem_init(&end_trace_sem
, 0, 0);
526 reset_global_counters();
528 lttngtop
.nbthreads
= 0;
529 lttngtop
.nbfiles
= 0;
531 lttngtop
.process_hash_table
= g_hash_table_new(g_direct_hash
,
533 lttngtop
.process_table
= g_ptr_array_new();
534 lttngtop
.files_table
= g_ptr_array_new();
535 lttngtop
.cpu_table
= g_ptr_array_new();
542 fprintf(fp
, "LTTngTop %s\n\n", VERSION
);
543 fprintf(fp
, "Usage : lttngtop [OPTIONS] [TRACE]\n");
544 fprintf(fp
, " TRACE Path to the trace to analyse (no trace path for live tracing)\n");
545 fprintf(fp
, " -h, --help This help message\n");
546 fprintf(fp
, " -t, --textdump Display live events in text-only\n");
547 fprintf(fp
, " -p, --pid Comma-separated list of PIDs to display\n");
548 fprintf(fp
, " -f, --child Follow threads associated with selected PIDs\n");
549 fprintf(fp
, " -n, --hostname Comma-separated list of hostnames to display (require hostname context in trace)\n");
550 fprintf(fp
, " -k, --kprobes Comma-separated list of kprobes to insert (same format as lttng enable-event)\n");
551 fprintf(fp
, " -r, --relay-hostname Network live streaming : hostname of the lttng-relayd (default port)\n");
552 fprintf(fp
, " -b, --begin Network live streaming : read the trace for the beginning of the recording\n");
556 * Parse probe options.
557 * Shamelessly stolen from lttng-tools :
558 * src/bin/lttng/commands/enable_events.c
560 static struct kprobes
*parse_probe_opts(char *opt
)
563 char name
[LTTNG_SYMBOL_NAME_LEN
];
564 struct kprobes
*kprobe
;
568 kprobe->probe_addr = 0;
569 kprobe->probe_offset = 0;
570 asprintf(&kprobe->probe_name, "probe_sys_open");
571 asprintf(&kprobe->symbol_name, "sys_open");
579 kprobe
= g_new0(struct kprobes
, 1);
581 /* Check for symbol+offset */
582 ret
= sscanf(opt
, "%[^'+']+%s", name
, s_hex
);
584 ret
= asprintf(&kprobe
->probe_name
, "probe_%s", name
);
585 ret
= asprintf(&kprobe
->symbol_name
, "%s", name
);
587 if (strlen(s_hex
) == 0) {
588 fprintf(stderr
, "Invalid probe offset %s", s_hex
);
592 kprobe
->probe_offset
= strtoul(s_hex
, NULL
, 0);
593 kprobe
->probe_addr
= 0;
597 /* Check for symbol */
598 if (isalpha(name
[0])) {
599 ret
= sscanf(opt
, "%s", name
);
601 ret
= asprintf(&kprobe
->probe_name
, "probe_%s", name
);
602 ret
= asprintf(&kprobe
->symbol_name
, "%s", name
);
603 kprobe
->probe_offset
= 0;
604 kprobe
->probe_addr
= 0;
609 /* Check for address */
610 ret
= sscanf(opt
, "%s", s_hex
);
612 if (strlen(s_hex
) == 0) {
613 fprintf(stderr
, "Invalid probe address %s", s_hex
);
617 ret
= asprintf(&kprobe
->probe_name
, "probe_%s", s_hex
);
618 kprobe
->probe_offset
= 0;
619 kprobe
->probe_addr
= strtoul(s_hex
, NULL
, 0);
631 * Return 0 if caller should continue, < 0 if caller should return
632 * error, > 0 if caller should exit without reporting error.
634 static int parse_options(int argc
, char **argv
)
643 pc
= poptGetContext(NULL
, argc
, (const char **) argv
, long_options
, 0);
644 poptReadDefaultConfig(pc
, 0);
646 while ((opt
= poptGetNextOpt(pc
)) != -1) {
650 ret
= 1; /* exit cleanly */
661 tid_filter_list
= g_hash_table_new(g_str_hash
,
663 tmp_str
= strtok(opt_tid
, ",");
665 tid
= malloc(sizeof(int));
666 *tid
= atoi(tmp_str
);
667 g_hash_table_insert(tid_filter_list
,
668 (gpointer
) tid
, tid
);
669 tmp_str
= strtok(NULL
, ",");
673 /* start reading the live trace from the beginning */
678 tmp_str
= strtok(opt_hostname
, ",");
680 add_hostname_list(tmp_str
, 1);
681 tmp_str
= strtok(NULL
, ",");
684 case OPT_RELAY_HOSTNAME
:
688 lttngtop
.kprobes_table
= g_ptr_array_new();
689 tmp_str
= strtok(opt_kprobes
, ",");
691 struct kprobes
*kprobe
;
693 kprobe
= parse_probe_opts(tmp_str
);
696 lttngtop
.kprobes_table
,
702 tmp_str
= strtok(NULL
, ",");
711 opt_input_path
= poptGetArg(pc
);
720 void iter_trace(struct bt_context
*bt_ctx
)
722 struct bt_ctf_iter
*iter
;
723 struct bt_iter_pos begin_pos
;
724 struct kprobes
*kprobe
;
725 const struct bt_ctf_event
*event
;
729 begin_pos
.type
= BT_SEEK_BEGIN
;
730 iter
= bt_ctf_iter_create(bt_ctx
, &begin_pos
, NULL
);
732 /* at each event, verify the status of the process table */
733 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
737 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
741 /* at each event check if we need to refresh */
742 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
745 /* to handle the scheduling events */
746 bt_ctf_iter_add_callback(iter
,
747 g_quark_from_static_string("sched_switch"),
748 NULL
, 0, handle_sched_switch
, NULL
, NULL
, NULL
);
749 /* to clean up the process table */
750 bt_ctf_iter_add_callback(iter
,
751 g_quark_from_static_string("sched_process_free"),
752 NULL
, 0, handle_sched_process_free
, NULL
, NULL
, NULL
);
753 /* to get all the process from the statedumps */
754 bt_ctf_iter_add_callback(iter
,
755 g_quark_from_static_string(
756 "lttng_statedump_process_state"),
757 NULL
, 0, handle_statedump_process_state
,
761 bt_ctf_iter_add_callback(iter
,
762 g_quark_from_static_string("exit_syscall"),
763 NULL
, 0, handle_exit_syscall
, NULL
, NULL
, NULL
);
764 bt_ctf_iter_add_callback(iter
,
765 g_quark_from_static_string("sys_write"),
766 NULL
, 0, handle_sys_write
, NULL
, NULL
, NULL
);
767 bt_ctf_iter_add_callback(iter
,
768 g_quark_from_static_string("sys_read"),
769 NULL
, 0, handle_sys_read
, NULL
, NULL
, NULL
);
770 bt_ctf_iter_add_callback(iter
,
771 g_quark_from_static_string("sys_open"),
772 NULL
, 0, handle_sys_open
, NULL
, NULL
, NULL
);
773 bt_ctf_iter_add_callback(iter
,
774 g_quark_from_static_string("sys_close"),
775 NULL
, 0, handle_sys_close
, NULL
, NULL
, NULL
);
776 bt_ctf_iter_add_callback(iter
,
777 g_quark_from_static_string(
778 "lttng_statedump_file_descriptor"),
779 NULL
, 0, handle_statedump_file_descriptor
,
783 if (lttngtop
.kprobes_table
) {
784 for (i
= 0; i
< lttngtop
.kprobes_table
->len
; i
++) {
785 kprobe
= g_ptr_array_index(lttngtop
.kprobes_table
, i
);
786 bt_ctf_iter_add_callback(iter
,
787 g_quark_from_static_string(
789 NULL
, 0, handle_kprobes
,
795 while ((event
= bt_ctf_iter_read_event(iter
)) != NULL
) {
796 if (quit
|| reload_trace
)
798 ret
= bt_iter_next(bt_ctf_get_iter(iter
));
803 /* block until quit, we reached the end of the trace */
804 sem_wait(&end_trace_sem
);
807 bt_ctf_iter_destroy(iter
);
811 * bt_context_add_traces_recursive: Open a trace recursively
812 * (copied from BSD code in converter/babeltrace.c)
814 * Find each trace present in the subdirectory starting from the given
815 * path, and add them to the context. The packet_seek parameter can be
816 * NULL: this specify to use the default format packet_seek.
818 * Return: 0 on success, nonzero on failure.
819 * Unable to open toplevel: failure.
820 * Unable to open some subdirectory or file: warn and continue;
822 int bt_context_add_traces_recursive(struct bt_context
*ctx
, const char *path
,
823 const char *format_str
,
824 void (*packet_seek
)(struct bt_stream_pos
*pos
,
825 size_t offset
, int whence
))
830 char lpath
[PATH_MAX
];
831 char * const paths
[2] = { lpath
, NULL
};
835 * Need to copy path, because fts_open can change it.
836 * It is the pointer array, not the strings, that are constant.
838 strncpy(lpath
, path
, PATH_MAX
);
839 lpath
[PATH_MAX
- 1] = '\0';
841 tree
= fts_open(paths
, FTS_NOCHDIR
| FTS_LOGICAL
, 0);
843 fprintf(stderr
, "[error] [Context] Cannot traverse \"%s\" for reading.\n",
848 trace_ids
= g_array_new(FALSE
, TRUE
, sizeof(int));
850 while ((node
= fts_read(tree
))) {
853 if (!(node
->fts_info
& FTS_D
))
856 dirfd
= open(node
->fts_accpath
, 0);
858 fprintf(stderr
, "[error] [Context] Unable to open trace "
859 "directory file descriptor.\n");
863 metafd
= openat(dirfd
, "metadata", O_RDONLY
);
881 trace_id
= bt_context_add_trace(ctx
,
882 node
->fts_accpath
, format_str
,
883 packet_seek
, NULL
, NULL
);
885 fprintf(stderr
, "[warning] [Context] opening trace \"%s\" from %s "
886 "for reading.\n", node
->fts_accpath
, path
);
887 /* Allow to skip erroneous traces. */
890 g_array_append_val(trace_ids
, trace_id
);
894 g_array_free(trace_ids
, TRUE
);
901 static int check_field_requirements(const struct bt_ctf_field_decl
*const * field_list
,
902 int field_cnt
, int *tid_check
, int *pid_check
,
903 int *procname_check
, int *ppid_check
)
906 struct perfcounter
*global
;
909 for (j
= 0; j
< field_cnt
; j
++) {
910 name
= bt_ctf_get_decl_field_name(field_list
[j
]);
911 if (*tid_check
== 0) {
912 if (strncmp(name
, "tid", 3) == 0)
915 if (*pid_check
== 0) {
916 if (strncmp(name
, "pid", 3) == 0)
919 if (*ppid_check
== 0) {
920 if (strncmp(name
, "ppid", 4) == 0)
923 if (*procname_check
== 0) {
924 if (strncmp(name
, "procname", 8) == 0)
927 if (strncmp(name
, "perf_", 5) == 0) {
928 global
= g_hash_table_lookup(global_perf_liszt
, (gpointer
) name
);
930 global
= g_new0(struct perfcounter
, 1);
931 /* by default, sort on the first perf context */
932 if (g_hash_table_size(global_perf_liszt
) == 0)
935 g_hash_table_insert(global_perf_liszt
, (gpointer
) strdup(name
), global
);
940 if (*tid_check
== 1 && *pid_check
== 1 && *ppid_check
== 1 &&
941 *procname_check
== 1)
948 * check_requirements: check if the required context informations are available
950 * If each mandatory context information is available for at least in one
951 * event, return 0 otherwise return -1.
953 int check_requirements(struct bt_context
*ctx
)
955 unsigned int i
, evt_cnt
, field_cnt
;
956 struct bt_ctf_event_decl
*const * evt_list
;
957 const struct bt_ctf_field_decl
*const * field_list
;
960 int procname_check
= 0;
964 ret
= bt_ctf_get_event_decl_list(0, ctx
, &evt_list
, &evt_cnt
);
969 for (i
= 0; i
< evt_cnt
; i
++) {
970 bt_ctf_get_decl_fields(evt_list
[i
], BT_STREAM_EVENT_CONTEXT
,
971 &field_list
, &field_cnt
);
972 ret
= check_field_requirements(field_list
, field_cnt
,
973 &tid_check
, &pid_check
, &procname_check
,
976 bt_ctf_get_decl_fields(evt_list
[i
], BT_EVENT_CONTEXT
,
977 &field_list
, &field_cnt
);
978 ret
= check_field_requirements(field_list
, field_cnt
,
979 &tid_check
, &pid_check
, &procname_check
,
982 bt_ctf_get_decl_fields(evt_list
[i
], BT_STREAM_PACKET_CONTEXT
,
983 &field_list
, &field_cnt
);
984 ret
= check_field_requirements(field_list
, field_cnt
,
985 &tid_check
, &pid_check
, &procname_check
,
989 if (tid_check
== 0) {
991 fprintf(stderr
, "[error] missing tid context information\n");
993 if (pid_check
== 0) {
995 fprintf(stderr
, "[error] missing pid context information\n");
997 if (ppid_check
== 0) {
999 fprintf(stderr
, "[error] missing ppid context information\n");
1001 if (procname_check
== 0) {
1003 fprintf(stderr
, "[error] missing procname context information\n");
1010 int main(int argc
, char **argv
)
1013 struct bt_context
*bt_ctx
= NULL
;
1016 ret
= parse_options(argc
, argv
);
1018 fprintf(stdout
, "Error parsing options.\n\n");
1021 } else if (ret
> 0) {
1025 if (!opt_input_path
&& !remote_live
) {
1027 #ifdef LTTNGTOP_MMAP_LIVE
1029 signal(SIGTERM
, handle_textdump_sigterm
);
1030 signal(SIGINT
, handle_textdump_sigterm
);
1032 mmap_live_loop(bt_ctx
);
1033 pthread_join(timer_thread
, NULL
);
1035 pthread_join(display_thread
, NULL
);
1037 lttng_stop_tracing("test");
1038 lttng_destroy_session("test");
1042 fprintf(stderr
, "Mmap live support not compiled\n");
1044 #endif /* LTTNGTOP_MMAP_LIVE */
1045 } else if (!opt_input_path
&& remote_live
) {
1047 ret
= setup_network_live(opt_relay_hostname
, opt_begin
);
1052 ret
= open_trace(&bt_ctx
);
1059 bt_ctx
= bt_context_create();
1060 ret
= bt_context_add_traces_recursive(bt_ctx
, opt_input_path
, "ctf", NULL
);
1062 fprintf(stderr
, "[error] Opening the trace\n");
1067 ret
= check_requirements(bt_ctx
);
1069 fprintf(stderr
, "[error] some mandatory contexts were missing, exiting.\n");
1072 if (!opt_textdump
) {
1073 pthread_create(&display_thread
, NULL
, ncurses_display
, (void *) NULL
);
1074 pthread_create(&timer_thread
, NULL
, refresh_thread
, (void *) NULL
);
1079 pthread_join(display_thread
, NULL
);
1081 pthread_join(timer_thread
, NULL
);
1085 bt_context_put(bt_ctx
);