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 { "procname", 'n', POPT_ARG_STRING
, &opt_procname
, OPT_PROCNAME
, 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_procname
|| 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_procname
|| 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
);
612 if (opt_procname
&& lookup_procname(comm
) &&
613 !lookup_filter_tid_list(tid
)) {
616 tmp_tid
= malloc(sizeof(int));
618 printf("ADDING %s %d\n", comm
, tid
);
619 g_hash_table_insert(global_filter_list
,
620 (gpointer
) tmp_tid
, tmp_tid
);
624 /* find or create the parent */
625 parent
= find_process_tid(<tngtop
, pid
, comm
);
627 parent
= add_proc(<tngtop
, pid
, comm
, timestamp
, hostname
);
632 /* attach the parent to the current process */
633 child
->threadparent
= parent
;
634 add_thread(parent
, child
);
637 update_perf_counter(child
, call_data
);
643 return BT_CB_ERROR_STOP
;
648 copies
= g_ptr_array_new();
649 global_perf_liszt
= g_hash_table_new(g_str_hash
, g_str_equal
);
650 global_filter_list
= g_hash_table_new(g_str_hash
, g_str_equal
);
651 global_host_list
= g_hash_table_new(g_str_hash
, g_str_equal
);
652 global_procname_list
= g_hash_table_new(g_str_hash
, g_str_equal
);
653 tid_filter_list
= g_hash_table_new(g_str_hash
,
656 sem_init(&goodtodisplay
, 0, 0);
657 sem_init(&goodtoupdate
, 0, 1);
658 sem_init(&timer
, 0, 1);
659 sem_init(&bootstrap
, 0, 0);
660 sem_init(&pause_sem
, 0, 1);
661 sem_init(&end_trace_sem
, 0, 0);
663 reset_global_counters();
665 lttngtop
.nbthreads
= 0;
666 lttngtop
.nbfiles
= 0;
668 lttngtop
.process_hash_table
= g_hash_table_new(g_direct_hash
,
670 lttngtop
.process_table
= g_ptr_array_new();
671 lttngtop
.files_table
= g_ptr_array_new();
672 lttngtop
.cpu_table
= g_ptr_array_new();
679 fprintf(fp
, "LTTngTop %s\n\n", VERSION
);
680 fprintf(fp
, "Usage : lttngtop [OPTIONS] TRACE\n");
681 fprintf(fp
, " TRACE Path to the trace to analyse (-r for network live tracing, nothing for mmap live streaming)\n");
682 fprintf(fp
, " -h, --help This help message\n");
683 fprintf(fp
, " -t, --textdump Display live events in text-only\n");
684 fprintf(fp
, " -p, --pid Comma-separated list of PIDs to display\n");
685 fprintf(fp
, " -f, --child Follow threads associated with selected PIDs\n");
686 fprintf(fp
, " -n, --procname Comma-separated list of procnames to display (require procname context in trace)\n");
687 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");
688 fprintf(fp
, " -k, --kprobes Comma-separated list of kprobes to insert (same format as lttng enable-event)\n");
689 fprintf(fp
, " -r, --relay-hostname Network live streaming : hostname of the lttng-relayd (default port)\n");
690 fprintf(fp
, " -b, --begin Network live streaming : read the trace for the beginning of the recording\n");
691 fprintf(fp
, " -o, --output <filename> In textdump, output the log in <filename>\n");
695 * Parse probe options.
696 * Shamelessly stolen from lttng-tools :
697 * src/bin/lttng/commands/enable_events.c
699 static struct kprobes
*parse_probe_opts(char *opt
)
702 char name
[LTTNG_SYMBOL_NAME_LEN
];
703 struct kprobes
*kprobe
;
707 kprobe->probe_addr = 0;
708 kprobe->probe_offset = 0;
709 asprintf(&kprobe->probe_name, "probe_sys_open");
710 asprintf(&kprobe->symbol_name, "sys_open");
718 kprobe
= g_new0(struct kprobes
, 1);
720 /* Check for symbol+offset */
721 ret
= sscanf(opt
, "%[^'+']+%s", name
, s_hex
);
723 ret
= asprintf(&kprobe
->probe_name
, "probe_%s", name
);
724 ret
= asprintf(&kprobe
->symbol_name
, "%s", name
);
726 if (strlen(s_hex
) == 0) {
727 fprintf(stderr
, "Invalid probe offset %s", s_hex
);
731 kprobe
->probe_offset
= strtoul(s_hex
, NULL
, 0);
732 kprobe
->probe_addr
= 0;
736 /* Check for symbol */
737 if (isalpha(name
[0])) {
738 ret
= sscanf(opt
, "%s", name
);
740 ret
= asprintf(&kprobe
->probe_name
, "probe_%s", name
);
741 ret
= asprintf(&kprobe
->symbol_name
, "%s", name
);
742 kprobe
->probe_offset
= 0;
743 kprobe
->probe_addr
= 0;
748 /* Check for address */
749 ret
= sscanf(opt
, "%s", s_hex
);
751 if (strlen(s_hex
) == 0) {
752 fprintf(stderr
, "Invalid probe address %s", s_hex
);
756 ret
= asprintf(&kprobe
->probe_name
, "probe_%s", s_hex
);
757 kprobe
->probe_offset
= 0;
758 kprobe
->probe_addr
= strtoul(s_hex
, NULL
, 0);
770 * Return 0 if caller should continue, < 0 if caller should return
771 * error, > 0 if caller should exit without reporting error.
773 static int parse_options(int argc
, char **argv
)
783 pc
= poptGetContext(NULL
, argc
, (const char **) argv
, long_options
, 0);
784 poptReadDefaultConfig(pc
, 0);
786 while ((opt
= poptGetNextOpt(pc
)) != -1) {
790 ret
= 1; /* exit cleanly */
803 tmp_str
= strtok(opt_tid
, ",");
805 tid
= malloc(sizeof(int));
806 *tid
= atoi(tmp_str
);
807 g_hash_table_insert(tid_filter_list
,
808 (gpointer
) tid
, tid
);
809 tmp_str
= strtok(NULL
, ",");
813 /* start reading the live trace from the beginning */
818 tmp_str
= strtok(opt_procname
, ",");
820 add_procname_list(tmp_str
, 1);
821 tmp_str
= strtok(NULL
, ",");
824 case OPT_RELAY_HOSTNAME
:
828 lttngtop
.kprobes_table
= g_ptr_array_new();
829 tmp_str
= strtok(opt_kprobes
, ",");
831 struct kprobes
*kprobe
;
833 kprobe
= parse_probe_opts(tmp_str
);
836 lttngtop
.kprobes_table
,
842 tmp_str
= strtok(NULL
, ",");
845 case OPT_OUTPUT_FILE
:
848 babeltrace_verbose
= 1;
856 opt_exec_name
= NULL
;
857 opt_exec_argv
= NULL
;
858 for (i
= 0; i
< argc
; i
++) {
859 if (argv
[i
][0] == '-' && argv
[i
][1] == '-') {
860 opt_exec_name
= argv
[i
+ 1];
861 opt_exec_argv
= &argv
[i
+ 1];
865 if (!opt_exec_name
) {
866 opt_input_path
= poptGetArg(pc
);
869 opt_output
= strdup("/dev/stdout");
871 output
= fopen(opt_output
, "w");
873 perror("Error opening output file");
885 void iter_trace(struct bt_context
*bt_ctx
)
887 struct bt_ctf_iter
*iter
;
888 struct bt_iter_pos begin_pos
;
889 struct kprobes
*kprobe
;
890 const struct bt_ctf_event
*event
;
894 begin_pos
.type
= BT_SEEK_BEGIN
;
895 iter
= bt_ctf_iter_create(bt_ctx
, &begin_pos
, NULL
);
897 /* at each event, verify the status of the process table */
898 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
901 /* to handle the follow child option */
902 bt_ctf_iter_add_callback(iter
,
903 g_quark_from_static_string("sched_process_fork"),
904 NULL
, 0, handle_sched_process_fork
, NULL
, NULL
, NULL
);
905 /* to clean up the process table */
906 bt_ctf_iter_add_callback(iter
,
907 g_quark_from_static_string("sched_process_free"),
908 NULL
, 0, handle_sched_process_free
, NULL
, NULL
, NULL
);
909 /* to get all the process from the statedumps */
910 bt_ctf_iter_add_callback(iter
,
911 g_quark_from_static_string(
912 "lttng_statedump_process_state"),
913 NULL
, 0, handle_statedump_process_state
,
915 bt_ctf_iter_add_callback(iter
,
916 g_quark_from_static_string(
917 "lttng_statedump_file_descriptor"),
918 NULL
, 0, handle_statedump_file_descriptor
,
920 bt_ctf_iter_add_callback(iter
,
921 g_quark_from_static_string("sys_open"),
922 NULL
, 0, handle_sys_open
, NULL
, NULL
, NULL
);
923 bt_ctf_iter_add_callback(iter
,
924 g_quark_from_static_string("sys_socket"),
925 NULL
, 0, handle_sys_socket
, NULL
, NULL
, NULL
);
926 bt_ctf_iter_add_callback(iter
,
927 g_quark_from_static_string("sys_close"),
928 NULL
, 0, handle_sys_close
, NULL
, NULL
, NULL
);
929 bt_ctf_iter_add_callback(iter
,
930 g_quark_from_static_string("exit_syscall"),
931 NULL
, 0, handle_exit_syscall
, NULL
, NULL
, NULL
);
933 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
937 /* at each event check if we need to refresh */
938 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
941 /* to handle the scheduling events */
942 bt_ctf_iter_add_callback(iter
,
943 g_quark_from_static_string("sched_switch"),
944 NULL
, 0, handle_sched_switch
, NULL
, NULL
, NULL
);
946 bt_ctf_iter_add_callback(iter
,
947 g_quark_from_static_string("sys_write"),
948 NULL
, 0, handle_sys_write
, NULL
, NULL
, NULL
);
949 bt_ctf_iter_add_callback(iter
,
950 g_quark_from_static_string("sys_read"),
951 NULL
, 0, handle_sys_read
, NULL
, NULL
, NULL
);
954 if (lttngtop
.kprobes_table
) {
955 for (i
= 0; i
< lttngtop
.kprobes_table
->len
; i
++) {
956 kprobe
= g_ptr_array_index(lttngtop
.kprobes_table
, i
);
957 bt_ctf_iter_add_callback(iter
,
958 g_quark_from_static_string(
960 NULL
, 0, handle_kprobes
,
971 execvpe(opt_exec_name
, opt_exec_argv
, opt_exec_env
);
973 } else if (pid
> 0) {
975 g_hash_table_insert(tid_filter_list
,
984 while ((event
= bt_ctf_iter_read_event(iter
)) != NULL
) {
985 if (quit
|| reload_trace
)
987 ret
= bt_iter_next(bt_ctf_get_iter(iter
));
992 /* block until quit, we reached the end of the trace */
993 sem_wait(&end_trace_sem
);
996 bt_ctf_iter_destroy(iter
);
1000 * bt_context_add_traces_recursive: Open a trace recursively
1001 * (copied from BSD code in converter/babeltrace.c)
1003 * Find each trace present in the subdirectory starting from the given
1004 * path, and add them to the context. The packet_seek parameter can be
1005 * NULL: this specify to use the default format packet_seek.
1007 * Return: 0 on success, nonzero on failure.
1008 * Unable to open toplevel: failure.
1009 * Unable to open some subdirectory or file: warn and continue;
1011 int bt_context_add_traces_recursive(struct bt_context
*ctx
, const char *path
,
1012 const char *format_str
,
1013 void (*packet_seek
)(struct bt_stream_pos
*pos
,
1014 size_t offset
, int whence
))
1019 char lpath
[PATH_MAX
];
1020 char * const paths
[2] = { lpath
, NULL
};
1023 if ((strncmp(path
, NET4_URL_PREFIX
, sizeof(NET4_URL_PREFIX
) - 1)) == 0 ||
1024 (strncmp(path
, NET6_URL_PREFIX
, sizeof(NET6_URL_PREFIX
) - 1)) == 0 ||
1025 (strncmp(path
, NET_URL_PREFIX
, sizeof(NET_URL_PREFIX
) - 1)) == 0) {
1026 ret
= bt_context_add_trace(ctx
,
1027 path
, format_str
, packet_seek
, NULL
, NULL
);
1029 fprintf(stderr
, "[warning] [Context] cannot open trace \"%s\" "
1030 "for reading.\n", path
);
1031 /* Allow to skip erroneous traces. */
1032 ret
= 1; /* partial error */
1037 * Need to copy path, because fts_open can change it.
1038 * It is the pointer array, not the strings, that are constant.
1040 strncpy(lpath
, path
, PATH_MAX
);
1041 lpath
[PATH_MAX
- 1] = '\0';
1043 tree
= fts_open(paths
, FTS_NOCHDIR
| FTS_LOGICAL
, 0);
1045 fprintf(stderr
, "[error] [Context] Cannot traverse \"%s\" for reading.\n",
1050 trace_ids
= g_array_new(FALSE
, TRUE
, sizeof(int));
1052 while ((node
= fts_read(tree
))) {
1055 if (!(node
->fts_info
& FTS_D
))
1058 dirfd
= open(node
->fts_accpath
, 0);
1060 fprintf(stderr
, "[error] [Context] Unable to open trace "
1061 "directory file descriptor.\n");
1065 metafd
= openat(dirfd
, "metadata", O_RDONLY
);
1072 ret
= close(metafd
);
1083 trace_id
= bt_context_add_trace(ctx
,
1084 node
->fts_accpath
, format_str
,
1085 packet_seek
, NULL
, NULL
);
1087 fprintf(stderr
, "[warning] [Context] opening trace \"%s\" from %s "
1088 "for reading.\n", node
->fts_accpath
, path
);
1089 /* Allow to skip erroneous traces. */
1092 g_array_append_val(trace_ids
, trace_id
);
1096 g_array_free(trace_ids
, TRUE
);
1103 static int check_field_requirements(const struct bt_ctf_field_decl
*const * field_list
,
1104 int field_cnt
, int *tid_check
, int *pid_check
,
1105 int *procname_check
, int *ppid_check
)
1108 struct perfcounter
*global
;
1111 for (j
= 0; j
< field_cnt
; j
++) {
1112 name
= bt_ctf_get_decl_field_name(field_list
[j
]);
1113 if (*tid_check
== 0) {
1114 if (strncmp(name
, "tid", 3) == 0)
1117 if (*pid_check
== 0) {
1118 if (strncmp(name
, "pid", 3) == 0)
1121 if (*ppid_check
== 0) {
1122 if (strncmp(name
, "ppid", 4) == 0)
1125 if (*procname_check
== 0) {
1126 if (strncmp(name
, "procname", 8) == 0)
1127 (*procname_check
)++;
1129 if (strncmp(name
, "perf_", 5) == 0) {
1130 global
= g_hash_table_lookup(global_perf_liszt
, (gpointer
) name
);
1132 global
= g_new0(struct perfcounter
, 1);
1133 /* by default, sort on the first perf context */
1134 if (g_hash_table_size(global_perf_liszt
) == 0)
1136 global
->visible
= 1;
1137 g_hash_table_insert(global_perf_liszt
, (gpointer
) strdup(name
), global
);
1142 if (*tid_check
== 1 && *pid_check
== 1 && *ppid_check
== 1 &&
1143 *procname_check
== 1)
1150 * check_requirements: check if the required context informations are available
1152 * If each mandatory context information is available for at least in one
1153 * event, return 0 otherwise return -1.
1155 int check_requirements(struct bt_context
*ctx
)
1157 unsigned int i
, evt_cnt
, field_cnt
;
1158 struct bt_ctf_event_decl
*const * evt_list
;
1159 const struct bt_ctf_field_decl
*const * field_list
;
1162 int procname_check
= 0;
1166 ret
= bt_ctf_get_event_decl_list(0, ctx
, &evt_list
, &evt_cnt
);
1171 for (i
= 0; i
< evt_cnt
; i
++) {
1172 bt_ctf_get_decl_fields(evt_list
[i
], BT_STREAM_EVENT_CONTEXT
,
1173 &field_list
, &field_cnt
);
1174 ret
= check_field_requirements(field_list
, field_cnt
,
1175 &tid_check
, &pid_check
, &procname_check
,
1178 bt_ctf_get_decl_fields(evt_list
[i
], BT_EVENT_CONTEXT
,
1179 &field_list
, &field_cnt
);
1180 ret
= check_field_requirements(field_list
, field_cnt
,
1181 &tid_check
, &pid_check
, &procname_check
,
1184 bt_ctf_get_decl_fields(evt_list
[i
], BT_STREAM_PACKET_CONTEXT
,
1185 &field_list
, &field_cnt
);
1186 ret
= check_field_requirements(field_list
, field_cnt
,
1187 &tid_check
, &pid_check
, &procname_check
,
1191 if (tid_check
== 0) {
1193 fprintf(stderr
, "[error] missing tid context information\n");
1195 if (pid_check
== 0) {
1197 fprintf(stderr
, "[error] missing pid context information\n");
1199 if (ppid_check
== 0) {
1201 fprintf(stderr
, "[error] missing ppid context information\n");
1203 if (procname_check
== 0) {
1205 fprintf(stderr
, "[error] missing procname context information\n");
1215 static void handle_sigchild(int signal
)
1219 waitpid(opt_exec_pid
, &status
, 0);
1222 int main(int argc
, char **argv
, char **envp
)
1225 struct bt_context
*bt_ctx
= NULL
;
1228 ret
= parse_options(argc
, argv
);
1230 fprintf(stdout
, "Error parsing options.\n\n");
1233 } else if (ret
> 0) {
1237 if (opt_exec_name
) {
1238 opt_exec_env
= envp
;
1239 signal(SIGCHLD
, handle_sigchild
);
1242 if (!opt_input_path
&& !remote_live
&& !opt_exec_name
) {
1244 #ifdef LTTNGTOP_MMAP_LIVE
1246 signal(SIGTERM
, handle_textdump_sigterm
);
1247 signal(SIGINT
, handle_textdump_sigterm
);
1249 mmap_live_loop(bt_ctx
);
1250 pthread_join(timer_thread
, NULL
);
1252 pthread_join(display_thread
, NULL
);
1254 lttng_stop_tracing("test");
1255 lttng_destroy_session("test");
1259 fprintf(stderr
, "[ERROR] Mmap live support not compiled, specify a "
1260 "trace directory or -r <relayd hostname/IP>\n");
1264 #endif /* LTTNGTOP_MMAP_LIVE */
1265 } else if (!opt_input_path
&& remote_live
) {
1267 bt_ctx
= bt_context_create();
1268 ret
= bt_context_add_traces_recursive(bt_ctx
, opt_relay_hostname
,
1269 "lttng-live", NULL
);
1271 fprintf(stderr
, "[error] Opening the trace\n");
1277 bt_ctx
= bt_context_create();
1278 ret
= bt_context_add_traces_recursive(bt_ctx
, opt_input_path
, "ctf", NULL
);
1280 fprintf(stderr
, "[error] Opening the trace\n");
1284 ret
= check_requirements(bt_ctx
);
1285 if (ret
< 0 && !valid_trace
) {
1286 fprintf(stderr
, "[error] some mandatory contexts "
1287 "were missing, exiting.\n");
1291 if (!opt_textdump
) {
1292 #ifdef HAVE_LIBNCURSES
1293 pthread_create(&display_thread
, NULL
, ncurses_display
,
1295 pthread_create(&timer_thread
, NULL
, refresh_thread
,
1298 printf("Ncurses support not compiled, please install "
1299 "the missing dependencies and recompile\n");
1308 pthread_join(display_thread
, NULL
);
1310 pthread_join(timer_thread
, NULL
);
1316 bt_context_put(bt_ctx
);