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>
42 #include <lttng/lttng.h>
43 #ifdef LTTNGTOP_MMAP_LIVE
44 #include <lttng/lttngtop-helper.h>
45 #include <babeltrace/lttngtopmmappacketseek.h>
46 #include "mmap-live.h"
47 #endif /* LTTNGTOP_MMAP_LIVE */
49 #include "lttngtoptypes.h"
51 #include "iostreamtop.h"
53 #include "network-live.h"
55 #ifdef HAVE_LIBNCURSES
56 #include "cursesdisplay.h"
59 #define NET_URL_PREFIX "net://"
60 #define NET4_URL_PREFIX "net4://"
61 #define NET6_URL_PREFIX "net6://"
63 #define DEFAULT_FILE_ARRAY_SIZE 1
65 const char *opt_input_path
;
72 /* We need at least one valid trace to start processing. */
75 struct lttngtop
*copy
;
76 pthread_t display_thread
;
77 pthread_t timer_thread
;
79 unsigned long refresh_display
= 1 * NSEC_PER_SEC
;
80 unsigned long last_display_update
= 0;
81 unsigned long last_event_ts
= 0;
82 struct syscall
*last_syscall
;
84 /* list of FDs available for being read with snapshots */
85 struct bt_mmap_stream_list mmap_list
;
86 GPtrArray
*lttng_consumer_stream_array
;
87 int sessiond_metadata
, consumerd_metadata
;
88 struct lttng_consumer_local_data
*ctx
= NULL
;
89 /* list of snapshots currently not consumed */
90 GPtrArray
*available_snapshots
;
91 sem_t metadata_available
;
111 static struct poptOption long_options
[] = {
112 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
113 { "help", 'h', POPT_ARG_NONE
, NULL
, OPT_HELP
, NULL
, NULL
},
114 { "textdump", 't', POPT_ARG_NONE
, NULL
, OPT_TEXTDUMP
, NULL
, NULL
},
115 { "child", 'f', POPT_ARG_NONE
, NULL
, OPT_CHILD
, NULL
, NULL
},
116 { "begin", 'b', POPT_ARG_NONE
, NULL
, OPT_BEGIN
, NULL
, NULL
},
117 { "pid", 'p', POPT_ARG_STRING
, &opt_tid
, OPT_PID
, NULL
, NULL
},
118 { "hostname", 'n', POPT_ARG_STRING
, &opt_hostname
, OPT_HOSTNAME
, NULL
, NULL
},
119 { "relay-hostname", 'r', POPT_ARG_STRING
, &opt_relay_hostname
,
120 OPT_RELAY_HOSTNAME
, NULL
, NULL
},
121 { "kprobes", 'k', POPT_ARG_STRING
, &opt_kprobes
, OPT_KPROBES
, NULL
, NULL
},
122 { "all", 'a', POPT_ARG_NONE
, NULL
, OPT_ALL
, NULL
, NULL
},
123 { "output", 'o', POPT_ARG_STRING
, &opt_output
, OPT_OUTPUT_FILE
, NULL
, NULL
},
124 { "verbose", 'v', POPT_ARG_NONE
, NULL
, OPT_VERBOSE
, NULL
, NULL
},
125 { NULL
, 0, 0, NULL
, 0, NULL
, NULL
},
128 #ifdef LTTNGTOP_MMAP_LIVE
129 static void handle_textdump_sigterm(int signal
)
132 lttng_destroy_session("test");
136 void *refresh_thread(void *p
)
140 sem_post(&pause_sem
);
142 sem_post(&end_trace_sem
);
143 sem_post(&goodtodisplay
);
144 sem_post(&goodtoupdate
);
147 if (!opt_input_path
) {
148 #ifdef LTTNGTOP_MMAP_LIVE
149 mmap_live_flush(mmap_list
);
152 sem_wait(&pause_sem
);
153 sem_post(&pause_sem
);
155 sleep(refresh_display
/NSEC_PER_SEC
);
159 #ifdef HAVE_LIBNCURSES
160 void *ncurses_display(void *p
)
162 unsigned int current_display_index
= 0;
164 sem_wait(&bootstrap
);
166 * Prevent the 1 second delay when we hit ESC
173 sem_wait(&goodtodisplay
);
174 sem_wait(&pause_sem
);
177 sem_post(&pause_sem
);
183 copy
= g_ptr_array_index(copies
, current_display_index
);
185 display(current_display_index
++);
187 sem_post(&goodtoupdate
);
188 sem_post(&pause_sem
);
191 #endif /* HAVE_LIBNCURSES */
193 void print_fields(struct bt_ctf_event
*event
, const char *procname
,
197 const struct bt_definition
*const * list
;
198 const struct bt_declaration
*l
;
199 const struct bt_definition
*scope
;
200 enum ctf_type_id type
;
202 struct processtop
*current_proc
;
203 struct files
*current_file
;
204 int fd
, fd_value
= -1;
206 scope
= bt_ctf_get_top_level_scope(event
, BT_EVENT_FIELDS
);
208 bt_ctf_get_field_list(event
, scope
, &list
, &cnt
);
209 for (i
= 0; i
< cnt
; i
++) {
211 fprintf(output
, ", ");
212 fprintf(output
, "%s = ", bt_ctf_field_name(list
[i
]));
213 l
= bt_ctf_get_decl_from_def(list
[i
]);
214 if (strncmp(bt_ctf_field_name(list
[i
]), "fd", 2) == 0)
218 type
= bt_ctf_field_type(l
);
219 if (type
== CTF_TYPE_INTEGER
) {
220 if (bt_ctf_get_int_signedness(l
) == 0) {
221 fd_value
= bt_ctf_get_uint64(list
[i
]);
222 fprintf(output
, "%" PRIu64
, bt_ctf_get_uint64(list
[i
]));
224 fd_value
= bt_ctf_get_int64(list
[i
]);
225 fprintf(output
, "%" PRId64
, bt_ctf_get_int64(list
[i
]));
227 } else if (type
== CTF_TYPE_STRING
) {
228 fprintf(output
, "%s", bt_ctf_get_string(list
[i
]));
229 } else if (type
== CTF_TYPE_ARRAY
) {
230 str
= bt_ctf_get_char_array(list
[i
]);
231 if (!bt_ctf_field_get_error() && str
)
232 fprintf(output
, "%s", str
);
235 current_proc
= find_process_tid(<tngtop
, pid
, procname
);
238 current_file
= get_file(current_proc
, fd_value
);
239 if (!current_file
|| !current_file
->name
)
241 fprintf(output
, "<%s>", current_file
->name
);
247 * hook on each event to check the timestamp and refresh the display if
250 enum bt_cb_ret
textdump(struct bt_ctf_event
*call_data
, void *private_data
)
252 unsigned long timestamp
;
255 uint64_t ts_nsec_start
;
256 int pid
, cpu_id
, tid
, ret
, lookup
, current_syscall
= 0;
257 const struct bt_definition
*scope
;
258 const char *hostname
, *procname
;
260 char *from_syscall
= NULL
;
262 timestamp
= bt_ctf_get_timestamp(call_data
);
264 /* can happen in network live when tracing is idle */
265 if (timestamp
< last_event_ts
)
268 last_event_ts
= timestamp
;
270 start
= format_timestamp(timestamp
);
271 ts_nsec_start
= timestamp
% NSEC_PER_SEC
;
273 pid
= get_context_pid(call_data
);
274 if (pid
== -1ULL && opt_tid
) {
278 tid
= get_context_tid(call_data
);
280 hostname
= get_context_hostname(call_data
);
285 if (opt_tid
|| opt_hostname
|| opt_exec_name
) {
286 if (!lookup_filter_tid_list(lookup
)) {
287 /* To display when a process of ours in getting scheduled in */
288 if (strcmp(bt_ctf_event_name(call_data
), "sched_switch") == 0) {
291 scope
= bt_ctf_get_top_level_scope(call_data
,
293 next_tid
= bt_ctf_get_int64(bt_ctf_get_field(call_data
,
294 scope
, "_next_tid"));
295 if (bt_ctf_field_get_error()) {
296 fprintf(stderr
, "Missing next_tid field\n");
299 if (!lookup_filter_tid_list(next_tid
)) {
304 fprintf(output
, "%c[1m", 27);
306 } else if (!opt_all
) {
311 fprintf(output
, "%c[1m", 27);
315 if (last_syscall
&& (strncmp(bt_ctf_event_name(call_data
),
316 "exit_syscall", 12)) != 0) {
318 fprintf(output
, " ...interrupted...\n");
321 cpu_id
= get_cpu_id(call_data
);
322 procname
= get_context_comm(call_data
);
323 if (strncmp(bt_ctf_event_name(call_data
), "sys_", 4) == 0) {
324 cpu
= get_cpu(cpu_id
);
325 cpu
->current_syscall
= g_new0(struct syscall
, 1);
326 cpu
->current_syscall
->name
= strdup(bt_ctf_event_name(call_data
));
327 cpu
->current_syscall
->ts_start
= timestamp
;
328 cpu
->current_syscall
->cpu_id
= cpu_id
;
329 last_syscall
= cpu
->current_syscall
;
331 } else if ((strncmp(bt_ctf_event_name(call_data
), "exit_syscall", 12)) == 0) {
334 /* Return code of a syscall if it was the last displayed event. */
335 if (last_syscall
&& last_syscall
->ts_start
== prev_ts
) {
336 if (last_syscall
->cpu_id
== cpu_id
) {
339 delta
= timestamp
- last_syscall
->ts_start
;
340 scope
= bt_ctf_get_top_level_scope(call_data
,
342 syscall_ret
= bt_ctf_get_int64(bt_ctf_get_field(call_data
,
345 fprintf(output
, "= %" PRId64
" (%" PRIu64
".%09" PRIu64
"s)\n",
346 syscall_ret
, delta
/ NSEC_PER_SEC
,
347 delta
% NSEC_PER_SEC
);
352 fprintf(output
, " ...interrupted...\n");
356 cpu
= get_cpu(cpu_id
);
357 if (cpu
->current_syscall
) {
358 delta
= timestamp
- cpu
->current_syscall
->ts_start
;
359 start_ts
= format_timestamp(cpu
->current_syscall
->ts_start
);
360 ret
= asprintf(&from_syscall
, " [from %02d:%02d:%02d.%09" PRIu64
361 " (+%" PRIu64
".%09" PRIu64
") (cpu %d) %s]",
362 start_ts
.tm_hour
, start_ts
.tm_min
, start_ts
.tm_sec
,
363 cpu
->current_syscall
->ts_start
% NSEC_PER_SEC
,
364 delta
/ NSEC_PER_SEC
, delta
% NSEC_PER_SEC
,
365 cpu_id
, cpu
->current_syscall
->name
);
369 free(cpu
->current_syscall
->name
);
370 g_free(cpu
->current_syscall
);
371 cpu
->current_syscall
= NULL
;
378 delta
= timestamp
- prev_ts
;
381 fprintf(output
, "%02d:%02d:%02d.%09" PRIu64
" (+%" PRIu64
".%09" PRIu64
") %s%s"
382 "(cpu %d) [%s (%d/%d)] %s (",
383 start
.tm_hour
, start
.tm_min
, start
.tm_sec
,
384 ts_nsec_start
, delta
/ NSEC_PER_SEC
,
385 delta
% NSEC_PER_SEC
, (hostname
) ? hostname
: "",
386 (hostname
) ? " ": "", cpu_id
, procname
, pid
, tid
,
387 bt_ctf_event_name(call_data
));
388 print_fields(call_data
, procname
, pid
);
389 fprintf(output
, ")%s%c", (from_syscall
) ? from_syscall
: "",
390 (!current_syscall
) ? '\n' : ' ');
393 if (opt_all
&& (opt_tid
|| opt_hostname
|| opt_exec_name
))
394 fprintf(output
, "%c[0m", 27);
399 return BT_CB_ERROR_STOP
;
401 return BT_CB_OK_STOP
;
404 enum bt_cb_ret
handle_kprobes(struct bt_ctf_event
*call_data
, void *private_data
)
407 struct kprobes
*kprobe
;
410 for (i
= 0; i
< lttngtop
.kprobes_table
->len
; i
++) {
411 kprobe
= g_ptr_array_index(lttngtop
.kprobes_table
, i
);
412 if (strcmp(bt_ctf_event_name(call_data
), kprobe
->probe_name
) == 0) {
421 * hook on each event to check the timestamp and refresh the display if
424 enum bt_cb_ret
check_timestamp(struct bt_ctf_event
*call_data
, void *private_data
)
426 unsigned long timestamp
;
428 timestamp
= bt_ctf_get_timestamp(call_data
);
429 if (timestamp
== -1ULL)
432 /* can happen in network live when tracing is idle */
433 if (timestamp
< last_event_ts
)
436 last_event_ts
= timestamp
;
438 if (last_display_update
== 0)
439 last_display_update
= timestamp
;
441 if (timestamp
- last_display_update
>= refresh_display
) {
442 sem_wait(&goodtoupdate
);
443 g_ptr_array_add(copies
, get_copy_lttngtop(last_display_update
,
445 sem_post(&goodtodisplay
);
446 sem_post(&bootstrap
);
447 last_display_update
= timestamp
;
452 fprintf(stderr
, "check_timestamp callback error\n");
453 return BT_CB_ERROR_STOP
;
456 return BT_CB_OK_STOP
;
460 * get_perf_counter : get or create and return a perf_counter struct for
461 * either a process or a cpu (only one of the 2 parameters mandatory)
463 struct perfcounter
*get_perf_counter(const char *name
, struct processtop
*proc
,
466 struct perfcounter
*ret
;
476 ret
= g_hash_table_lookup(table
, (gpointer
) name
);
480 ret
= g_new0(struct perfcounter
, 1);
481 /* by default, make it visible in the UI */
483 g_hash_table_insert(table
, (gpointer
) strdup(name
), ret
);
492 void update_perf_value(struct processtop
*proc
, struct cputime
*cpu
,
493 const char *name
, int value
)
495 struct perfcounter
*cpu_perf
, *process_perf
;
497 cpu_perf
= get_perf_counter(name
, NULL
, cpu
);
498 if (cpu_perf
->count
< value
) {
499 process_perf
= get_perf_counter(name
, proc
, NULL
);
500 process_perf
->count
+= value
- cpu_perf
->count
;
501 cpu_perf
->count
= value
;
505 void extract_perf_counter_scope(const struct bt_ctf_event
*event
,
506 const struct bt_definition
*scope
,
507 struct processtop
*proc
,
510 struct bt_definition
const * const *list
= NULL
;
511 const struct bt_definition
*field
;
513 struct perfcounter
*perfcounter
;
521 ret
= bt_ctf_get_field_list(event
, scope
, &list
, &count
);
528 g_hash_table_iter_init(&iter
, global_perf_liszt
);
529 while (g_hash_table_iter_next (&iter
, &key
, (gpointer
) &perfcounter
)) {
530 field
= bt_ctf_get_field(event
, scope
, (char *) key
);
532 int value
= bt_ctf_get_uint64(field
);
533 if (bt_ctf_field_get_error())
535 update_perf_value(proc
, cpu
, (char *) key
, value
);
543 void update_perf_counter(struct processtop
*proc
, const struct bt_ctf_event
*event
)
546 const struct bt_definition
*scope
;
548 cpu
= get_cpu(get_cpu_id(event
));
550 scope
= bt_ctf_get_top_level_scope(event
, BT_STREAM_EVENT_CONTEXT
);
551 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
553 scope
= bt_ctf_get_top_level_scope(event
, BT_STREAM_PACKET_CONTEXT
);
554 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
556 scope
= bt_ctf_get_top_level_scope(event
, BT_EVENT_CONTEXT
);
557 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
560 enum bt_cb_ret
fix_process_table(struct bt_ctf_event
*call_data
,
563 int pid
, tid
, ppid
, vpid
, vtid
, vppid
;
564 char *comm
, *hostname
;
565 struct processtop
*parent
, *child
;
566 unsigned long timestamp
;
568 timestamp
= bt_ctf_get_timestamp(call_data
);
569 if (timestamp
== -1ULL)
572 pid
= get_context_pid(call_data
);
577 tid
= get_context_tid(call_data
);
581 ppid
= get_context_ppid(call_data
);
585 vpid
= get_context_vpid(call_data
);
589 vtid
= get_context_vtid(call_data
);
593 vppid
= get_context_vppid(call_data
);
597 comm
= get_context_comm(call_data
);
602 hostname
= get_context_hostname(call_data
);
604 /* find or create the current process */
605 child
= find_process_tid(<tngtop
, tid
, comm
);
607 child
= add_proc(<tngtop
, tid
, comm
, timestamp
, hostname
);
610 update_proc(child
, pid
, tid
, ppid
, vpid
, vtid
, vppid
, comm
, hostname
);
613 /* find or create the parent */
614 parent
= find_process_tid(<tngtop
, pid
, comm
);
616 parent
= add_proc(<tngtop
, pid
, comm
, timestamp
, hostname
);
621 /* attach the parent to the current process */
622 child
->threadparent
= parent
;
623 add_thread(parent
, child
);
626 update_perf_counter(child
, call_data
);
632 return BT_CB_ERROR_STOP
;
637 copies
= g_ptr_array_new();
638 global_perf_liszt
= g_hash_table_new(g_str_hash
, g_str_equal
);
639 global_filter_list
= g_hash_table_new(g_str_hash
, g_str_equal
);
640 global_host_list
= g_hash_table_new(g_str_hash
, g_str_equal
);
641 tid_filter_list
= g_hash_table_new(g_str_hash
,
644 sem_init(&goodtodisplay
, 0, 0);
645 sem_init(&goodtoupdate
, 0, 1);
646 sem_init(&timer
, 0, 1);
647 sem_init(&bootstrap
, 0, 0);
648 sem_init(&pause_sem
, 0, 1);
649 sem_init(&end_trace_sem
, 0, 0);
651 reset_global_counters();
653 lttngtop
.nbthreads
= 0;
654 lttngtop
.nbfiles
= 0;
656 lttngtop
.process_hash_table
= g_hash_table_new(g_direct_hash
,
658 lttngtop
.process_table
= g_ptr_array_new();
659 lttngtop
.files_table
= g_ptr_array_new();
660 lttngtop
.cpu_table
= g_ptr_array_new();
667 fprintf(fp
, "LTTngTop %s\n\n", VERSION
);
668 fprintf(fp
, "Usage : lttngtop [OPTIONS] TRACE\n");
669 fprintf(fp
, " TRACE Path to the trace to analyse (-r for network live tracing, nothing for mmap live streaming)\n");
670 fprintf(fp
, " -h, --help This help message\n");
671 fprintf(fp
, " -t, --textdump Display live events in text-only\n");
672 fprintf(fp
, " -p, --pid Comma-separated list of PIDs to display\n");
673 fprintf(fp
, " -f, --child Follow threads associated with selected PIDs\n");
674 fprintf(fp
, " -n, --hostname Comma-separated list of hostnames to display (require hostname context in trace)\n");
675 fprintf(fp
, " -a, --all In textdump mode, display all events but write in bold the processes we are interested in (-f, -p and -n)\n");
676 fprintf(fp
, " -k, --kprobes Comma-separated list of kprobes to insert (same format as lttng enable-event)\n");
677 fprintf(fp
, " -r, --relay-hostname Network live streaming : hostname of the lttng-relayd (default port)\n");
678 fprintf(fp
, " -b, --begin Network live streaming : read the trace for the beginning of the recording\n");
679 fprintf(fp
, " -o, --output <filename> In textdump, output the log in <filename>\n");
683 * Parse probe options.
684 * Shamelessly stolen from lttng-tools :
685 * src/bin/lttng/commands/enable_events.c
687 static struct kprobes
*parse_probe_opts(char *opt
)
690 char name
[LTTNG_SYMBOL_NAME_LEN
];
691 struct kprobes
*kprobe
;
695 kprobe->probe_addr = 0;
696 kprobe->probe_offset = 0;
697 asprintf(&kprobe->probe_name, "probe_sys_open");
698 asprintf(&kprobe->symbol_name, "sys_open");
706 kprobe
= g_new0(struct kprobes
, 1);
708 /* Check for symbol+offset */
709 ret
= sscanf(opt
, "%[^'+']+%s", name
, s_hex
);
711 ret
= asprintf(&kprobe
->probe_name
, "probe_%s", name
);
712 ret
= asprintf(&kprobe
->symbol_name
, "%s", name
);
714 if (strlen(s_hex
) == 0) {
715 fprintf(stderr
, "Invalid probe offset %s", s_hex
);
719 kprobe
->probe_offset
= strtoul(s_hex
, NULL
, 0);
720 kprobe
->probe_addr
= 0;
724 /* Check for symbol */
725 if (isalpha(name
[0])) {
726 ret
= sscanf(opt
, "%s", name
);
728 ret
= asprintf(&kprobe
->probe_name
, "probe_%s", name
);
729 ret
= asprintf(&kprobe
->symbol_name
, "%s", name
);
730 kprobe
->probe_offset
= 0;
731 kprobe
->probe_addr
= 0;
736 /* Check for address */
737 ret
= sscanf(opt
, "%s", s_hex
);
739 if (strlen(s_hex
) == 0) {
740 fprintf(stderr
, "Invalid probe address %s", s_hex
);
744 ret
= asprintf(&kprobe
->probe_name
, "probe_%s", s_hex
);
745 kprobe
->probe_offset
= 0;
746 kprobe
->probe_addr
= strtoul(s_hex
, NULL
, 0);
758 * Return 0 if caller should continue, < 0 if caller should return
759 * error, > 0 if caller should exit without reporting error.
761 static int parse_options(int argc
, char **argv
)
771 pc
= poptGetContext(NULL
, argc
, (const char **) argv
, long_options
, 0);
772 poptReadDefaultConfig(pc
, 0);
774 while ((opt
= poptGetNextOpt(pc
)) != -1) {
778 ret
= 1; /* exit cleanly */
791 tmp_str
= strtok(opt_tid
, ",");
793 tid
= malloc(sizeof(int));
794 *tid
= atoi(tmp_str
);
795 g_hash_table_insert(tid_filter_list
,
796 (gpointer
) tid
, tid
);
797 tmp_str
= strtok(NULL
, ",");
801 /* start reading the live trace from the beginning */
806 tmp_str
= strtok(opt_hostname
, ",");
808 add_hostname_list(tmp_str
, 1);
809 tmp_str
= strtok(NULL
, ",");
812 case OPT_RELAY_HOSTNAME
:
816 lttngtop
.kprobes_table
= g_ptr_array_new();
817 tmp_str
= strtok(opt_kprobes
, ",");
819 struct kprobes
*kprobe
;
821 kprobe
= parse_probe_opts(tmp_str
);
824 lttngtop
.kprobes_table
,
830 tmp_str
= strtok(NULL
, ",");
833 case OPT_OUTPUT_FILE
:
836 babeltrace_verbose
= 1;
844 opt_exec_name
= NULL
;
845 opt_exec_argv
= NULL
;
846 for (i
= 0; i
< argc
; i
++) {
847 if (argv
[i
][0] == '-' && argv
[i
][1] == '-') {
848 opt_exec_name
= argv
[i
+ 1];
849 opt_exec_argv
= &argv
[i
+ 1];
853 if (!opt_exec_name
) {
854 opt_input_path
= poptGetArg(pc
);
857 opt_output
= strdup("/dev/stdout");
859 output
= fopen(opt_output
, "w");
861 perror("Error opening output file");
873 void iter_trace(struct bt_context
*bt_ctx
)
875 struct bt_ctf_iter
*iter
;
876 struct bt_iter_pos begin_pos
;
877 struct kprobes
*kprobe
;
878 const struct bt_ctf_event
*event
;
882 begin_pos
.type
= BT_SEEK_BEGIN
;
883 iter
= bt_ctf_iter_create(bt_ctx
, &begin_pos
, NULL
);
885 /* at each event, verify the status of the process table */
886 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
889 /* to handle the follow child option */
890 bt_ctf_iter_add_callback(iter
,
891 g_quark_from_static_string("sched_process_fork"),
892 NULL
, 0, handle_sched_process_fork
, NULL
, NULL
, NULL
);
893 /* to clean up the process table */
894 bt_ctf_iter_add_callback(iter
,
895 g_quark_from_static_string("sched_process_free"),
896 NULL
, 0, handle_sched_process_free
, NULL
, NULL
, NULL
);
897 /* to get all the process from the statedumps */
898 bt_ctf_iter_add_callback(iter
,
899 g_quark_from_static_string(
900 "lttng_statedump_process_state"),
901 NULL
, 0, handle_statedump_process_state
,
903 bt_ctf_iter_add_callback(iter
,
904 g_quark_from_static_string(
905 "lttng_statedump_file_descriptor"),
906 NULL
, 0, handle_statedump_file_descriptor
,
908 bt_ctf_iter_add_callback(iter
,
909 g_quark_from_static_string("sys_open"),
910 NULL
, 0, handle_sys_open
, NULL
, NULL
, NULL
);
911 bt_ctf_iter_add_callback(iter
,
912 g_quark_from_static_string("sys_socket"),
913 NULL
, 0, handle_sys_socket
, NULL
, NULL
, NULL
);
914 bt_ctf_iter_add_callback(iter
,
915 g_quark_from_static_string("sys_close"),
916 NULL
, 0, handle_sys_close
, NULL
, NULL
, NULL
);
917 bt_ctf_iter_add_callback(iter
,
918 g_quark_from_static_string("exit_syscall"),
919 NULL
, 0, handle_exit_syscall
, NULL
, NULL
, NULL
);
921 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
925 /* at each event check if we need to refresh */
926 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
929 /* to handle the scheduling events */
930 bt_ctf_iter_add_callback(iter
,
931 g_quark_from_static_string("sched_switch"),
932 NULL
, 0, handle_sched_switch
, NULL
, NULL
, NULL
);
934 bt_ctf_iter_add_callback(iter
,
935 g_quark_from_static_string("sys_write"),
936 NULL
, 0, handle_sys_write
, NULL
, NULL
, NULL
);
937 bt_ctf_iter_add_callback(iter
,
938 g_quark_from_static_string("sys_read"),
939 NULL
, 0, handle_sys_read
, NULL
, NULL
, NULL
);
942 if (lttngtop
.kprobes_table
) {
943 for (i
= 0; i
< lttngtop
.kprobes_table
->len
; i
++) {
944 kprobe
= g_ptr_array_index(lttngtop
.kprobes_table
, i
);
945 bt_ctf_iter_add_callback(iter
,
946 g_quark_from_static_string(
948 NULL
, 0, handle_kprobes
,
959 execvpe(opt_exec_name
, opt_exec_argv
, opt_exec_env
);
961 } else if (pid
> 0) {
963 g_hash_table_insert(tid_filter_list
,
972 while ((event
= bt_ctf_iter_read_event(iter
)) != NULL
) {
973 if (quit
|| reload_trace
)
975 ret
= bt_iter_next(bt_ctf_get_iter(iter
));
980 /* block until quit, we reached the end of the trace */
981 sem_wait(&end_trace_sem
);
984 bt_ctf_iter_destroy(iter
);
988 * bt_context_add_traces_recursive: Open a trace recursively
989 * (copied from BSD code in converter/babeltrace.c)
991 * Find each trace present in the subdirectory starting from the given
992 * path, and add them to the context. The packet_seek parameter can be
993 * NULL: this specify to use the default format packet_seek.
995 * Return: 0 on success, nonzero on failure.
996 * Unable to open toplevel: failure.
997 * Unable to open some subdirectory or file: warn and continue;
999 int bt_context_add_traces_recursive(struct bt_context
*ctx
, const char *path
,
1000 const char *format_str
,
1001 void (*packet_seek
)(struct bt_stream_pos
*pos
,
1002 size_t offset
, int whence
))
1007 char lpath
[PATH_MAX
];
1008 char * const paths
[2] = { lpath
, NULL
};
1011 if ((strncmp(path
, NET4_URL_PREFIX
, sizeof(NET4_URL_PREFIX
) - 1)) == 0 ||
1012 (strncmp(path
, NET6_URL_PREFIX
, sizeof(NET6_URL_PREFIX
) - 1)) == 0 ||
1013 (strncmp(path
, NET_URL_PREFIX
, sizeof(NET_URL_PREFIX
) - 1)) == 0) {
1014 ret
= bt_context_add_trace(ctx
,
1015 path
, format_str
, packet_seek
, NULL
, NULL
);
1017 fprintf(stderr
, "[warning] [Context] cannot open trace \"%s\" "
1018 "for reading.\n", path
);
1019 /* Allow to skip erroneous traces. */
1020 ret
= 1; /* partial error */
1025 * Need to copy path, because fts_open can change it.
1026 * It is the pointer array, not the strings, that are constant.
1028 strncpy(lpath
, path
, PATH_MAX
);
1029 lpath
[PATH_MAX
- 1] = '\0';
1031 tree
= fts_open(paths
, FTS_NOCHDIR
| FTS_LOGICAL
, 0);
1033 fprintf(stderr
, "[error] [Context] Cannot traverse \"%s\" for reading.\n",
1038 trace_ids
= g_array_new(FALSE
, TRUE
, sizeof(int));
1040 while ((node
= fts_read(tree
))) {
1043 if (!(node
->fts_info
& FTS_D
))
1046 dirfd
= open(node
->fts_accpath
, 0);
1048 fprintf(stderr
, "[error] [Context] Unable to open trace "
1049 "directory file descriptor.\n");
1053 metafd
= openat(dirfd
, "metadata", O_RDONLY
);
1060 ret
= close(metafd
);
1071 trace_id
= bt_context_add_trace(ctx
,
1072 node
->fts_accpath
, format_str
,
1073 packet_seek
, NULL
, NULL
);
1075 fprintf(stderr
, "[warning] [Context] opening trace \"%s\" from %s "
1076 "for reading.\n", node
->fts_accpath
, path
);
1077 /* Allow to skip erroneous traces. */
1080 g_array_append_val(trace_ids
, trace_id
);
1084 g_array_free(trace_ids
, TRUE
);
1091 static int check_field_requirements(const struct bt_ctf_field_decl
*const * field_list
,
1092 int field_cnt
, int *tid_check
, int *pid_check
,
1093 int *procname_check
, int *ppid_check
)
1096 struct perfcounter
*global
;
1099 for (j
= 0; j
< field_cnt
; j
++) {
1100 name
= bt_ctf_get_decl_field_name(field_list
[j
]);
1101 if (*tid_check
== 0) {
1102 if (strncmp(name
, "tid", 3) == 0)
1105 if (*pid_check
== 0) {
1106 if (strncmp(name
, "pid", 3) == 0)
1109 if (*ppid_check
== 0) {
1110 if (strncmp(name
, "ppid", 4) == 0)
1113 if (*procname_check
== 0) {
1114 if (strncmp(name
, "procname", 8) == 0)
1115 (*procname_check
)++;
1117 if (strncmp(name
, "perf_", 5) == 0) {
1118 global
= g_hash_table_lookup(global_perf_liszt
, (gpointer
) name
);
1120 global
= g_new0(struct perfcounter
, 1);
1121 /* by default, sort on the first perf context */
1122 if (g_hash_table_size(global_perf_liszt
) == 0)
1124 global
->visible
= 1;
1125 g_hash_table_insert(global_perf_liszt
, (gpointer
) strdup(name
), global
);
1130 if (*tid_check
== 1 && *pid_check
== 1 && *ppid_check
== 1 &&
1131 *procname_check
== 1)
1138 * check_requirements: check if the required context informations are available
1140 * If each mandatory context information is available for at least in one
1141 * event, return 0 otherwise return -1.
1143 int check_requirements(struct bt_context
*ctx
)
1145 unsigned int i
, evt_cnt
, field_cnt
;
1146 struct bt_ctf_event_decl
*const * evt_list
;
1147 const struct bt_ctf_field_decl
*const * field_list
;
1150 int procname_check
= 0;
1154 ret
= bt_ctf_get_event_decl_list(0, ctx
, &evt_list
, &evt_cnt
);
1159 for (i
= 0; i
< evt_cnt
; i
++) {
1160 bt_ctf_get_decl_fields(evt_list
[i
], BT_STREAM_EVENT_CONTEXT
,
1161 &field_list
, &field_cnt
);
1162 ret
= check_field_requirements(field_list
, field_cnt
,
1163 &tid_check
, &pid_check
, &procname_check
,
1166 bt_ctf_get_decl_fields(evt_list
[i
], BT_EVENT_CONTEXT
,
1167 &field_list
, &field_cnt
);
1168 ret
= check_field_requirements(field_list
, field_cnt
,
1169 &tid_check
, &pid_check
, &procname_check
,
1172 bt_ctf_get_decl_fields(evt_list
[i
], BT_STREAM_PACKET_CONTEXT
,
1173 &field_list
, &field_cnt
);
1174 ret
= check_field_requirements(field_list
, field_cnt
,
1175 &tid_check
, &pid_check
, &procname_check
,
1179 if (tid_check
== 0) {
1181 fprintf(stderr
, "[error] missing tid context information\n");
1183 if (pid_check
== 0) {
1185 fprintf(stderr
, "[error] missing pid context information\n");
1187 if (ppid_check
== 0) {
1189 fprintf(stderr
, "[error] missing ppid context information\n");
1191 if (procname_check
== 0) {
1193 fprintf(stderr
, "[error] missing procname context information\n");
1203 static void handle_sigchild(int signal
)
1207 waitpid(opt_exec_pid
, &status
, 0);
1210 int main(int argc
, char **argv
, char **envp
)
1213 struct bt_context
*bt_ctx
= NULL
;
1216 ret
= parse_options(argc
, argv
);
1218 fprintf(stdout
, "Error parsing options.\n\n");
1221 } else if (ret
> 0) {
1225 if (opt_exec_name
) {
1226 opt_exec_env
= envp
;
1227 signal(SIGCHLD
, handle_sigchild
);
1230 if (!opt_input_path
&& !remote_live
&& !opt_exec_name
) {
1232 #ifdef LTTNGTOP_MMAP_LIVE
1234 signal(SIGTERM
, handle_textdump_sigterm
);
1235 signal(SIGINT
, handle_textdump_sigterm
);
1237 mmap_live_loop(bt_ctx
);
1238 pthread_join(timer_thread
, NULL
);
1240 pthread_join(display_thread
, NULL
);
1242 lttng_stop_tracing("test");
1243 lttng_destroy_session("test");
1247 fprintf(stderr
, "[ERROR] Mmap live support not compiled, specify a "
1248 "trace directory or -r <relayd hostname/IP>\n");
1252 #endif /* LTTNGTOP_MMAP_LIVE */
1253 } else if (!opt_input_path
&& remote_live
) {
1255 bt_ctx
= bt_context_create();
1256 ret
= bt_context_add_traces_recursive(bt_ctx
, opt_relay_hostname
,
1257 "lttng-live", NULL
);
1259 fprintf(stderr
, "[error] Opening the trace\n");
1265 bt_ctx
= bt_context_create();
1266 ret
= bt_context_add_traces_recursive(bt_ctx
, opt_input_path
, "ctf", NULL
);
1268 fprintf(stderr
, "[error] Opening the trace\n");
1272 ret
= check_requirements(bt_ctx
);
1273 if (ret
< 0 && !valid_trace
) {
1274 fprintf(stderr
, "[error] some mandatory contexts "
1275 "were missing, exiting.\n");
1279 if (!opt_textdump
) {
1280 #ifdef HAVE_LIBNCURSES
1281 pthread_create(&display_thread
, NULL
, ncurses_display
,
1283 pthread_create(&timer_thread
, NULL
, refresh_thread
,
1286 printf("Ncurses support not compiled, please install "
1287 "the missing dependencies and recompile\n");
1296 pthread_join(display_thread
, NULL
);
1298 pthread_join(timer_thread
, NULL
);
1304 bt_context_put(bt_ctx
);