fix add_proc with hostname
[lttngtop.git] / src / lttngtop.c
CommitLineData
1fc22eb4 1/*
aa15ac1c 2 * Copyright (C) 2011-2012 Julien Desfossez
1fc22eb4
JD
3 *
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;
7 *
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.
12 *
71bd7ce1
AM
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.
1fc22eb4
JD
16 */
17
18#define _GNU_SOURCE
19#include <config.h>
20#include <stdio.h>
21#include <stdint.h>
22#include <babeltrace/babeltrace.h>
23#include <babeltrace/ctf/events.h>
24#include <babeltrace/ctf/callbacks.h>
3ba84bed 25#include <babeltrace/ctf/iterator.h>
1fc22eb4
JD
26#include <fcntl.h>
27#include <pthread.h>
28#include <popt.h>
29#include <stdlib.h>
30#include <ftw.h>
31#include <dirent.h>
32#include <ctype.h>
33#include <sys/stat.h>
34#include <unistd.h>
35#include <string.h>
36#include <errno.h>
37#include <sys/types.h>
38#include <fts.h>
85db4618 39#include <assert.h>
16b22a0f
JD
40#include <sys/mman.h>
41#include <lttng/lttng.h>
42#include <lttng/lttngtop-helper.h>
c78f2cdc 43#include <babeltrace/lttngtopmmappacketseek.h>
1fc22eb4
JD
44
45#include "lttngtoptypes.h"
46#include "cputop.h"
47#include "iostreamtop.h"
48#include "cursesdisplay.h"
49#include "common.h"
50
51#define DEFAULT_FILE_ARRAY_SIZE 1
52
53const char *opt_input_path;
32b70e07 54static int opt_textdump;
32b70e07 55static int opt_child;
1fc22eb4 56
ae9e85c7
JD
57int quit = 0;
58
1fc22eb4
JD
59struct lttngtop *copy;
60pthread_t display_thread;
61pthread_t timer_thread;
62
63unsigned long refresh_display = 1 * NSEC_PER_SEC;
64unsigned long last_display_update = 0;
1fc22eb4 65
16b22a0f
JD
66/* list of FDs available for being read with snapshots */
67struct mmap_stream_list mmap_list;
68GPtrArray *lttng_consumer_stream_array;
69int sessiond_metadata, consumerd_metadata;
4e6aeb3d
JD
70struct lttng_consumer_local_data *ctx = NULL;
71/* list of snapshots currently not consumed */
72GPtrArray *available_snapshots;
73sem_t metadata_available;
050f9cf9 74int reload_trace = 0;
16b22a0f 75
57bff788
JD
76int last_textdump_print_newline = 1;
77
1fc22eb4
JD
78enum {
79 OPT_NONE = 0,
80 OPT_HELP,
6777529d 81 OPT_TEXTDUMP,
32b70e07
JD
82 OPT_PID,
83 OPT_CHILD,
c8d75a13 84 OPT_HOSTNAME,
f16e36fc 85 OPT_KPROBES,
1fc22eb4
JD
86};
87
88static struct poptOption long_options[] = {
89 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
90 { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL },
6777529d 91 { "textdump", 't', POPT_ARG_NONE, NULL, OPT_TEXTDUMP, NULL, NULL },
32b70e07 92 { "child", 'f', POPT_ARG_NONE, NULL, OPT_CHILD, NULL, NULL },
57bff788 93 { "pid", 'p', POPT_ARG_STRING, &opt_tid, OPT_PID, NULL, NULL },
c8d75a13 94 { "hostname", 'n', POPT_ARG_STRING, &opt_hostname, OPT_HOSTNAME, NULL, NULL },
f16e36fc 95 { "kprobes", 'k', POPT_ARG_STRING, &opt_kprobes, OPT_KPROBES, NULL, NULL },
1fc22eb4
JD
96 { NULL, 0, 0, NULL, 0, NULL, NULL },
97};
98
24797198
JD
99static void handle_textdump_sigterm(int signal)
100{
101 quit = 1;
102 lttng_destroy_session("test");
103}
104
1fc22eb4
JD
105void *refresh_thread(void *p)
106{
cade3418
JD
107 struct mmap_stream *mmap_info;
108
1fc22eb4 109 while (1) {
ae9e85c7
JD
110 if (quit) {
111 sem_post(&pause_sem);
112 sem_post(&timer);
1402044a 113 sem_post(&end_trace_sem);
ae9e85c7 114 sem_post(&goodtodisplay);
1402044a 115 sem_post(&goodtoupdate);
ae9e85c7
JD
116 pthread_exit(0);
117 }
1402044a 118 if (!opt_input_path) {
d2d680e0
JD
119 bt_list_for_each_entry(mmap_info, &mmap_list.head, list)
120 helper_kernctl_buffer_flush(mmap_info->fd);
1402044a 121 }
1fc22eb4
JD
122 sem_wait(&pause_sem);
123 sem_post(&pause_sem);
124 sem_post(&timer);
125 sleep(refresh_display/NSEC_PER_SEC);
126 }
127}
128
129void *ncurses_display(void *p)
130{
131 unsigned int current_display_index = 0;
132
133 sem_wait(&bootstrap);
b332d28f
JD
134 /*
135 * Prevent the 1 second delay when we hit ESC
136 */
137 ESCDELAY = 0;
1fc22eb4
JD
138 init_ncurses();
139
140 while (1) {
141 sem_wait(&timer);
142 sem_wait(&goodtodisplay);
143 sem_wait(&pause_sem);
144
ae9e85c7 145 if (quit) {
33572a17
JD
146 sem_post(&pause_sem);
147 sem_post(&timer);
ae9e85c7
JD
148 reset_ncurses();
149 pthread_exit(0);
150 }
151
1fc22eb4 152 copy = g_ptr_array_index(copies, current_display_index);
85db4618
JD
153 assert(copy);
154 display(current_display_index++);
1fc22eb4
JD
155
156 sem_post(&goodtoupdate);
157 sem_post(&pause_sem);
1fc22eb4
JD
158 }
159}
160
575cc4fd
JD
161void print_fields(struct bt_ctf_event *event)
162{
163 unsigned int cnt, i;
164 const struct definition *const * list;
165 const struct definition *scope;
166 enum ctf_type_id type;
167 const char *str;
168
169 scope = bt_ctf_get_top_level_scope(event, BT_EVENT_FIELDS);
170
171 bt_ctf_get_field_list(event, scope, &list, &cnt);
172 for (i = 0; i < cnt; i++) {
173 if (i != 0)
174 printf(", ");
175 printf("%s = ", bt_ctf_field_name(list[i]));
176 type = bt_ctf_field_type(list[i]);
177 if (type == CTF_TYPE_INTEGER) {
178 if (bt_ctf_get_int_signedness(list[i]) == 0)
179 printf("%" PRIu64 "", bt_ctf_get_uint64(list[i]));
180 else
181 printf("%" PRId64 "", bt_ctf_get_int64(list[i]));
182 } else if (type == CTF_TYPE_STRING) {
183 printf("%s", bt_ctf_get_string(list[i]));
184 } else if (type == CTF_TYPE_ARRAY) {
185 str = bt_ctf_get_char_array(list[i]);
fbbda4da 186 if (!bt_ctf_field_get_error() && str)
575cc4fd
JD
187 printf("%s", str);
188 }
189 }
190}
191
6112d0d4
JD
192/*
193 * hook on each event to check the timestamp and refresh the display if
194 * necessary
195 */
196enum bt_cb_ret print_timestamp(struct bt_ctf_event *call_data, void *private_data)
197{
198 unsigned long timestamp;
199 struct tm start;
b520ab45 200 uint64_t ts_nsec_start;
575cc4fd 201 int pid, cpu_id;
d2d680e0
JD
202 int64_t syscall_ret;
203 const struct definition *scope;
575cc4fd 204 const char *hostname, *procname;
6112d0d4 205
6112d0d4
JD
206 timestamp = bt_ctf_get_timestamp(call_data);
207
b520ab45 208 start = format_timestamp(timestamp);
6112d0d4
JD
209 ts_nsec_start = timestamp % NSEC_PER_SEC;
210
32b70e07 211 pid = get_context_pid(call_data);
57bff788 212 if (pid == -1ULL && opt_tid) {
32b70e07
JD
213 goto error;
214 }
215
c8d75a13 216 hostname = get_context_hostname(call_data);
da4353bb
JD
217 if (opt_tid || opt_hostname)
218 if (!lookup_filter_tid_list(pid))
219 goto end;
220
221 /*
c8d75a13
JD
222 if (!opt_tid && (opt_hostname && !lookup_hostname_list(hostname)))
223 goto end;
224 if (!opt_hostname && (opt_tid && !lookup_tid_list(pid)))
225 goto end;
226 if ((opt_tid && !lookup_tid_list(pid)) &&
227 (opt_hostname && !lookup_hostname_list(hostname)))
32b70e07 228 goto end;
da4353bb 229 */
32b70e07 230
575cc4fd
JD
231 cpu_id = get_cpu_id(call_data);
232 procname = get_context_comm(call_data);
233
f16e36fc
JD
234 if ((strcmp(bt_ctf_event_name(call_data), "exit_syscall") == 0) &&
235 !last_textdump_print_newline) {
d2d680e0
JD
236 scope = bt_ctf_get_top_level_scope(call_data,
237 BT_EVENT_FIELDS);
238 syscall_ret = bt_ctf_get_int64(bt_ctf_get_field(call_data,
239 scope, "_ret"));
240 printf("= %ld\n", syscall_ret);
57bff788 241 last_textdump_print_newline = 1;
d2d680e0 242 } else {
57bff788
JD
243 /* we might have lost the exit_syscall event, so need to
244 * print the newline in this case */
245 if (last_textdump_print_newline == 0)
246 printf("\n");
575cc4fd
JD
247 printf("%02d:%02d:%02d.%09" PRIu64 " (%s) (cpu %d) [%s (%d)] %s (",
248 start.tm_hour, start.tm_min, start.tm_sec,
249 ts_nsec_start, hostname, cpu_id, procname, pid,
250 bt_ctf_event_name(call_data));
251 print_fields(call_data);
252 printf(") ");
fbbda4da 253 if (strncmp(bt_ctf_event_name(call_data), "sys_", 4) != 0) {
575cc4fd 254 printf("\n");
fbbda4da
JD
255 last_textdump_print_newline = 1;
256 } else {
257 last_textdump_print_newline = 0;
575cc4fd 258 }
d2d680e0 259 }
6112d0d4 260
32b70e07 261end:
6112d0d4 262 return BT_CB_OK;
32b70e07
JD
263error:
264 return BT_CB_ERROR_STOP;
6112d0d4
JD
265}
266
246d5992
JD
267enum bt_cb_ret handle_kprobes(struct bt_ctf_event *call_data, void *private_data)
268{
269 int i;
270 struct kprobes *kprobe;
271
272 /* for kprobes */
273 for (i = 0; i < lttngtop.kprobes_table->len; i++) {
274 kprobe = g_ptr_array_index(lttngtop.kprobes_table, i);
275 if (strcmp(bt_ctf_event_name(call_data), kprobe->probe_name) == 0) {
276 kprobe->count++;
277 }
278 }
279
280 return BT_CB_OK;
281}
282
1fc22eb4
JD
283/*
284 * hook on each event to check the timestamp and refresh the display if
285 * necessary
286 */
4adc8274 287enum bt_cb_ret check_timestamp(struct bt_ctf_event *call_data, void *private_data)
1fc22eb4
JD
288{
289 unsigned long timestamp;
290
c78f2cdc 291 timestamp = bt_ctf_get_timestamp(call_data);
1fc22eb4
JD
292 if (timestamp == -1ULL)
293 goto error;
294
295 if (last_display_update == 0)
296 last_display_update = timestamp;
297
298 if (timestamp - last_display_update >= refresh_display) {
299 sem_wait(&goodtoupdate);
300 g_ptr_array_add(copies, get_copy_lttngtop(last_display_update,
301 timestamp));
302 sem_post(&goodtodisplay);
303 sem_post(&bootstrap);
304 last_display_update = timestamp;
305 }
306 return BT_CB_OK;
307
308error:
309 fprintf(stderr, "check_timestamp callback error\n");
310 return BT_CB_ERROR_STOP;
311}
312
313/*
314 * get_perf_counter : get or create and return a perf_counter struct for
315 * either a process or a cpu (only one of the 2 parameters mandatory)
316 */
317struct perfcounter *get_perf_counter(const char *name, struct processtop *proc,
318 struct cputime *cpu)
319{
bb6d72a2 320 struct perfcounter *ret;
1fc22eb4
JD
321 GHashTable *table;
322
323 if (proc)
324 table = proc->perf;
325 else if (cpu)
326 table = cpu->perf;
327 else
328 goto error;
329
330 ret = g_hash_table_lookup(table, (gpointer) name);
331 if (ret)
332 goto end;
333
559c9f86 334 ret = g_new0(struct perfcounter, 1);
1fc22eb4
JD
335 /* by default, make it visible in the UI */
336 ret->visible = 1;
85db4618 337 g_hash_table_insert(table, (gpointer) strdup(name), ret);
1fc22eb4 338
1fc22eb4
JD
339end:
340 return ret;
341
342error:
343 return NULL;
344}
345
346void update_perf_value(struct processtop *proc, struct cputime *cpu,
347 const char *name, int value)
348{
349 struct perfcounter *cpu_perf, *process_perf;
350
351 cpu_perf = get_perf_counter(name, NULL, cpu);
352 if (cpu_perf->count < value) {
353 process_perf = get_perf_counter(name, proc, NULL);
354 process_perf->count += value - cpu_perf->count;
355 cpu_perf->count = value;
356 }
357}
358
4adc8274 359void extract_perf_counter_scope(const struct bt_ctf_event *event,
2e0a1190 360 const struct bt_definition *scope,
1fc22eb4
JD
361 struct processtop *proc,
362 struct cputime *cpu)
363{
2e0a1190
JD
364 struct bt_definition const * const *list = NULL;
365 const struct bt_definition *field;
1fc22eb4 366 unsigned int count;
bb6d72a2
JD
367 struct perfcounter *perfcounter;
368 GHashTableIter iter;
369 gpointer key;
370 int ret;
1fc22eb4
JD
371
372 if (!scope)
373 goto end;
374
375 ret = bt_ctf_get_field_list(event, scope, &list, &count);
376 if (ret < 0)
377 goto end;
378
bb6d72a2
JD
379 if (count == 0)
380 goto end;
381
382 g_hash_table_iter_init(&iter, global_perf_liszt);
383 while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfcounter)) {
384 field = bt_ctf_get_field(event, scope, (char *) key);
385 if (field) {
386 int value = bt_ctf_get_uint64(field);
1fc22eb4
JD
387 if (bt_ctf_field_get_error())
388 continue;
bb6d72a2 389 update_perf_value(proc, cpu, (char *) key, value);
1fc22eb4
JD
390 }
391 }
392
393end:
394 return;
395}
396
4adc8274 397void update_perf_counter(struct processtop *proc, const struct bt_ctf_event *event)
1fc22eb4 398{
1fc22eb4 399 struct cputime *cpu;
2e0a1190 400 const struct bt_definition *scope;
1fc22eb4 401
d67167cd 402 cpu = get_cpu(get_cpu_id(event));
1fc22eb4
JD
403
404 scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT);
405 extract_perf_counter_scope(event, scope, proc, cpu);
406
407 scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT);
408 extract_perf_counter_scope(event, scope, proc, cpu);
409
410 scope = bt_ctf_get_top_level_scope(event, BT_EVENT_CONTEXT);
411 extract_perf_counter_scope(event, scope, proc, cpu);
1fc22eb4
JD
412}
413
4adc8274 414enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data,
1fc22eb4
JD
415 void *private_data)
416{
1402044a 417 int pid, tid, ppid, vpid, vtid, vppid;
c8d75a13 418 char *comm, *hostname;
1fc22eb4 419 struct processtop *parent, *child;
1fc22eb4
JD
420 unsigned long timestamp;
421
c78f2cdc 422 timestamp = bt_ctf_get_timestamp(call_data);
1fc22eb4
JD
423 if (timestamp == -1ULL)
424 goto error;
425
1dec520a
JD
426 pid = get_context_pid(call_data);
427 if (pid == -1ULL) {
1fc22eb4
JD
428 goto error;
429 }
96aa77de 430
1dec520a
JD
431 tid = get_context_tid(call_data);
432 if (tid == -1ULL) {
1fc22eb4
JD
433 goto error;
434 }
1dec520a
JD
435 ppid = get_context_ppid(call_data);
436 if (ppid == -1ULL) {
1fc22eb4
JD
437 goto error;
438 }
1402044a
JD
439 vpid = get_context_vpid(call_data);
440 if (pid == -1ULL) {
441 vpid = -1;
442 }
443 vtid = get_context_vtid(call_data);
444 if (tid == -1ULL) {
445 vtid = -1;
446 }
447 vppid = get_context_vppid(call_data);
448 if (ppid == -1ULL) {
449 vppid = -1;
450 }
1dec520a
JD
451 comm = get_context_comm(call_data);
452 if (!comm) {
1fc22eb4
JD
453 goto error;
454 }
c8d75a13
JD
455 /* optional */
456 hostname = get_context_hostname(call_data);
1fc22eb4
JD
457
458 /* find or create the current process */
459 child = find_process_tid(&lttngtop, tid, comm);
460 if (!child)
906c08f6 461 child = add_proc(&lttngtop, tid, comm, timestamp, hostname);
96aa77de
JD
462 if (!child)
463 goto end;
c8d75a13 464 update_proc(child, pid, tid, ppid, vpid, vtid, vppid, comm, hostname);
1fc22eb4
JD
465
466 if (pid != tid) {
467 /* find or create the parent */
468 parent = find_process_tid(&lttngtop, pid, comm);
469 if (!parent) {
906c08f6 470 parent = add_proc(&lttngtop, pid, comm, timestamp, hostname);
96aa77de
JD
471 if (parent)
472 parent->pid = pid;
1fc22eb4
JD
473 }
474
475 /* attach the parent to the current process */
476 child->threadparent = parent;
477 add_thread(parent, child);
478 }
479
480 update_perf_counter(child, call_data);
481
96aa77de 482end:
1fc22eb4
JD
483 return BT_CB_OK;
484
485error:
486 return BT_CB_ERROR_STOP;
487}
488
489void init_lttngtop()
490{
491 copies = g_ptr_array_new();
0d91c12a 492 global_perf_liszt = g_hash_table_new(g_str_hash, g_str_equal);
da4353bb 493 global_filter_list = g_hash_table_new(g_str_hash, g_str_equal);
1fc22eb4
JD
494
495 sem_init(&goodtodisplay, 0, 0);
496 sem_init(&goodtoupdate, 0, 1);
497 sem_init(&timer, 0, 1);
498 sem_init(&bootstrap, 0, 0);
499 sem_init(&pause_sem, 0, 1);
500 sem_init(&end_trace_sem, 0, 0);
501
e05a35a6
JD
502 reset_global_counters();
503 lttngtop.nbproc = 0;
504 lttngtop.nbthreads = 0;
505 lttngtop.nbfiles = 0;
506
30b646c4
JD
507 lttngtop.process_hash_table = g_hash_table_new(g_direct_hash,
508 g_direct_equal);
1fc22eb4
JD
509 lttngtop.process_table = g_ptr_array_new();
510 lttngtop.files_table = g_ptr_array_new();
511 lttngtop.cpu_table = g_ptr_array_new();
da4353bb
JD
512
513 toggle_filter = -1;
1fc22eb4
JD
514}
515
c263c4eb 516void usage(FILE *fp)
1fc22eb4 517{
c263c4eb 518 fprintf(fp, "LTTngTop %s\n\n", VERSION);
c8d75a13
JD
519 fprintf(fp, "Usage : lttngtop [OPTIONS] [TRACE]\n");
520 fprintf(fp, " TRACE Path to the trace to analyse (no trace path for live tracing)\n");
521 fprintf(fp, " -h, --help This help message\n");
522 fprintf(fp, " -t, --textdump Display live events in text-only\n");
523 fprintf(fp, " -p, --pid Comma-separated list of PIDs to display\n");
524 fprintf(fp, " -f, --child Follow threads associated with selected PIDs\n");
525 fprintf(fp, " -n, --hostname Comma-separated list of hostnames to display (require hostname context in trace)\n");
241ba90a 526 fprintf(fp, " -k, --kprobes Comma-separated list of kprobes to insert (same format as lttng enable-event)\n");
1fc22eb4
JD
527}
528
f16e36fc
JD
529/*
530 * Parse probe options.
531 * Shamelessly stolen from lttng-tools :
532 * src/bin/lttng/commands/enable_events.c
533 */
534static struct kprobes *parse_probe_opts(char *opt)
535{
536 char s_hex[19];
537 char name[LTTNG_SYMBOL_NAME_LEN];
538 struct kprobes *kprobe;
539 int ret;
540
541 /*
542 kprobe->probe_addr = 0;
543 kprobe->probe_offset = 0;
544 asprintf(&kprobe->probe_name, "probe_sys_open");
545 asprintf(&kprobe->symbol_name, "sys_open");
546 */
547
548 if (opt == NULL) {
549 kprobe = NULL;
550 goto end;
551 }
552
553 kprobe = g_new0(struct kprobes, 1);
554
555 /* Check for symbol+offset */
556 ret = sscanf(opt, "%[^'+']+%s", name, s_hex);
557 if (ret == 2) {
558 asprintf(&kprobe->probe_name, "probe_%s", name);
559 asprintf(&kprobe->symbol_name, "%s", name);
560
561 if (strlen(s_hex) == 0) {
562 fprintf(stderr, "Invalid probe offset %s", s_hex);
563 ret = -1;
564 goto end;
565 }
566 kprobe->probe_offset = strtoul(s_hex, NULL, 0);
567 kprobe->probe_addr = 0;
568 goto end;
569 }
570
571 /* Check for symbol */
572 if (isalpha(name[0])) {
573 ret = sscanf(opt, "%s", name);
574 if (ret == 1) {
575 asprintf(&kprobe->probe_name, "probe_%s", name);
576 asprintf(&kprobe->symbol_name, "%s", name);
577 kprobe->probe_offset = 0;
578 kprobe->probe_addr = 0;
579 goto end;
580 }
581 }
582
583 /* Check for address */
584 ret = sscanf(opt, "%s", s_hex);
585 if (ret > 0) {
586 if (strlen(s_hex) == 0) {
587 fprintf(stderr, "Invalid probe address %s", s_hex);
588 ret = -1;
589 goto end;
590 }
591 asprintf(&kprobe->probe_name, "probe_%s", s_hex);
592 kprobe->probe_offset = 0;
593 kprobe->probe_addr = strtoul(s_hex, NULL, 0);
594 goto end;
595 }
596
597 /* No match */
598 kprobe = NULL;
599
600end:
601 return kprobe;
602}
603
1fc22eb4
JD
604/*
605 * Return 0 if caller should continue, < 0 if caller should return
606 * error, > 0 if caller should exit without reporting error.
607 */
608static int parse_options(int argc, char **argv)
609{
610 poptContext pc;
611 int opt, ret = 0;
57bff788
JD
612 char *tmp_str;
613 int *tid;
1fc22eb4 614
1fc22eb4
JD
615 pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0);
616 poptReadDefaultConfig(pc, 0);
617
618 while ((opt = poptGetNextOpt(pc)) != -1) {
619 switch (opt) {
620 case OPT_HELP:
621 usage(stdout);
622 ret = 1; /* exit cleanly */
623 goto end;
6777529d
JD
624 case OPT_TEXTDUMP:
625 opt_textdump = 1;
32b70e07
JD
626 break;
627 case OPT_CHILD:
628 opt_textdump = 1;
629 opt_child = 1;
630 break;
631 case OPT_PID:
da4353bb 632 toggle_filter = 1;
c8d75a13
JD
633 tid_list = g_hash_table_new(g_str_hash,
634 g_str_equal);
57bff788
JD
635 tmp_str = strtok(opt_tid, ",");
636 while (tmp_str) {
637 tid = malloc(sizeof(int));
638 *tid = atoi(tmp_str);
c8d75a13
JD
639 g_hash_table_insert(tid_list,
640 (gpointer) tid, tid);
641 tmp_str = strtok(NULL, ",");
642 }
643 break;
644 case OPT_HOSTNAME:
da4353bb 645 toggle_filter = 1;
c8d75a13
JD
646 hostname_list = g_hash_table_new(g_str_hash,
647 g_str_equal);
648 tmp_str = strtok(opt_hostname, ",");
649 while (tmp_str) {
650 char *new_str = strdup(tmp_str);
651 g_hash_table_insert(hostname_list,
652 (gpointer) new_str,
653 (gpointer) new_str);
57bff788
JD
654 tmp_str = strtok(NULL, ",");
655 }
32b70e07 656 break;
f16e36fc
JD
657 case OPT_KPROBES:
658 lttngtop.kprobes_table = g_ptr_array_new();
659 tmp_str = strtok(opt_kprobes, ",");
660 while (tmp_str) {
661 struct kprobes *kprobe;
662
663 kprobe = parse_probe_opts(tmp_str);
664 if (kprobe) {
665 g_ptr_array_add(
666 lttngtop.kprobes_table,
667 kprobe);
668 } else {
669 ret = -EINVAL;
670 goto end;
671 }
672 tmp_str = strtok(NULL, ",");
673 }
674 break;
1fc22eb4
JD
675 default:
676 ret = -EINVAL;
677 goto end;
678 }
679 }
680
681 opt_input_path = poptGetArg(pc);
16b22a0f 682
1fc22eb4
JD
683end:
684 if (pc) {
685 poptFreeContext(pc);
686 }
687 return ret;
688}
689
690void iter_trace(struct bt_context *bt_ctx)
691{
692 struct bt_ctf_iter *iter;
693 struct bt_iter_pos begin_pos;
246d5992 694 struct kprobes *kprobe;
4adc8274 695 const struct bt_ctf_event *event;
246d5992 696 int i;
1fc22eb4
JD
697 int ret = 0;
698
699 begin_pos.type = BT_SEEK_BEGIN;
700 iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL);
701
da4353bb
JD
702 /* at each event, verify the status of the process table */
703 bt_ctf_iter_add_callback(iter, 0, NULL, 0,
704 fix_process_table,
705 NULL, NULL, NULL);
6777529d
JD
706 if (opt_textdump) {
707 bt_ctf_iter_add_callback(iter, 0, NULL, 0,
708 print_timestamp,
709 NULL, NULL, NULL);
710 } else {
711 /* at each event check if we need to refresh */
712 bt_ctf_iter_add_callback(iter, 0, NULL, 0,
713 check_timestamp,
714 NULL, NULL, NULL);
6777529d
JD
715 /* to handle the scheduling events */
716 bt_ctf_iter_add_callback(iter,
717 g_quark_from_static_string("sched_switch"),
718 NULL, 0, handle_sched_switch, NULL, NULL, NULL);
719 /* to clean up the process table */
720 bt_ctf_iter_add_callback(iter,
721 g_quark_from_static_string("sched_process_free"),
722 NULL, 0, handle_sched_process_free, NULL, NULL, NULL);
723 /* to get all the process from the statedumps */
724 bt_ctf_iter_add_callback(iter,
725 g_quark_from_static_string(
726 "lttng_statedump_process_state"),
727 NULL, 0, handle_statedump_process_state,
728 NULL, NULL, NULL);
729
730 /* for IO top */
731 bt_ctf_iter_add_callback(iter,
732 g_quark_from_static_string("exit_syscall"),
733 NULL, 0, handle_exit_syscall, NULL, NULL, NULL);
734 bt_ctf_iter_add_callback(iter,
735 g_quark_from_static_string("sys_write"),
736 NULL, 0, handle_sys_write, NULL, NULL, NULL);
737 bt_ctf_iter_add_callback(iter,
738 g_quark_from_static_string("sys_read"),
739 NULL, 0, handle_sys_read, NULL, NULL, NULL);
740 bt_ctf_iter_add_callback(iter,
741 g_quark_from_static_string("sys_open"),
742 NULL, 0, handle_sys_open, NULL, NULL, NULL);
743 bt_ctf_iter_add_callback(iter,
744 g_quark_from_static_string("sys_close"),
745 NULL, 0, handle_sys_close, NULL, NULL, NULL);
746 bt_ctf_iter_add_callback(iter,
747 g_quark_from_static_string(
ceb3a221 748 "lttng_statedump_file_descriptor"),
6777529d
JD
749 NULL, 0, handle_statedump_file_descriptor,
750 NULL, NULL, NULL);
246d5992
JD
751
752 /* for kprobes */
da4353bb
JD
753 if (lttngtop.kprobes_table) {
754 for (i = 0; i < lttngtop.kprobes_table->len; i++) {
755 kprobe = g_ptr_array_index(lttngtop.kprobes_table, i);
756 bt_ctf_iter_add_callback(iter,
757 g_quark_from_static_string(
758 kprobe->probe_name),
759 NULL, 0, handle_kprobes,
760 NULL, NULL, NULL);
761 }
246d5992 762 }
6777529d
JD
763 }
764
fbbda4da 765 while ((event = bt_ctf_iter_read_event(iter)) != NULL) {
050f9cf9 766 if (quit || reload_trace)
ae9e85c7 767 goto end_iter;
1fc22eb4
JD
768 ret = bt_iter_next(bt_ctf_get_iter(iter));
769 if (ret < 0)
770 goto end_iter;
771 }
772
773 /* block until quit, we reached the end of the trace */
774 sem_wait(&end_trace_sem);
775
776end_iter:
06570214 777 bt_ctf_iter_destroy(iter);
1fc22eb4
JD
778}
779
780/*
781 * bt_context_add_traces_recursive: Open a trace recursively
782 * (copied from BSD code in converter/babeltrace.c)
783 *
784 * Find each trace present in the subdirectory starting from the given
785 * path, and add them to the context. The packet_seek parameter can be
786 * NULL: this specify to use the default format packet_seek.
787 *
788 * Return: 0 on success, nonzero on failure.
789 * Unable to open toplevel: failure.
790 * Unable to open some subdirectory or file: warn and continue;
791 */
792int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path,
793 const char *format_str,
2e0a1190 794 void (*packet_seek)(struct bt_stream_pos *pos,
1fc22eb4
JD
795 size_t offset, int whence))
796{
797 FTS *tree;
798 FTSENT *node;
799 GArray *trace_ids;
800 char lpath[PATH_MAX];
801 char * const paths[2] = { lpath, NULL };
0d567cf1 802 int ret = -1;
1fc22eb4
JD
803
804 /*
805 * Need to copy path, because fts_open can change it.
806 * It is the pointer array, not the strings, that are constant.
807 */
808 strncpy(lpath, path, PATH_MAX);
809 lpath[PATH_MAX - 1] = '\0';
810
811 tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0);
812 if (tree == NULL) {
813 fprintf(stderr, "[error] [Context] Cannot traverse \"%s\" for reading.\n",
814 path);
815 return -EINVAL;
816 }
817
818 trace_ids = g_array_new(FALSE, TRUE, sizeof(int));
819
820 while ((node = fts_read(tree))) {
821 int dirfd, metafd;
822
823 if (!(node->fts_info & FTS_D))
824 continue;
825
826 dirfd = open(node->fts_accpath, 0);
827 if (dirfd < 0) {
828 fprintf(stderr, "[error] [Context] Unable to open trace "
829 "directory file descriptor.\n");
830 ret = dirfd;
831 goto error;
832 }
833 metafd = openat(dirfd, "metadata", O_RDONLY);
834 if (metafd < 0) {
7314c855
JD
835 close(dirfd);
836 ret = -1;
837 continue;
1fc22eb4
JD
838 } else {
839 int trace_id;
840
841 ret = close(metafd);
842 if (ret < 0) {
843 perror("close");
844 goto error;
845 }
846 ret = close(dirfd);
847 if (ret < 0) {
848 perror("close");
849 goto error;
850 }
851
852 trace_id = bt_context_add_trace(ctx,
853 node->fts_accpath, format_str,
854 packet_seek, NULL, NULL);
855 if (trace_id < 0) {
0d567cf1 856 fprintf(stderr, "[warning] [Context] opening trace \"%s\" from %s "
1fc22eb4 857 "for reading.\n", node->fts_accpath, path);
0d567cf1
JD
858 /* Allow to skip erroneous traces. */
859 continue;
1fc22eb4
JD
860 }
861 g_array_append_val(trace_ids, trace_id);
862 }
863 }
864
865 g_array_free(trace_ids, TRUE);
0d567cf1 866 return ret;
1fc22eb4
JD
867
868error:
869 return ret;
870}
871
4553b4d1 872static int check_field_requirements(const struct bt_ctf_field_decl *const * field_list,
a54d0d2c
JD
873 int field_cnt, int *tid_check, int *pid_check,
874 int *procname_check, int *ppid_check)
875{
876 int j;
bb6d72a2
JD
877 struct perfcounter *global;
878 const char *name;
a54d0d2c
JD
879
880 for (j = 0; j < field_cnt; j++) {
bb6d72a2 881 name = bt_ctf_get_decl_field_name(field_list[j]);
a54d0d2c 882 if (*tid_check == 0) {
bb6d72a2 883 if (strncmp(name, "tid", 3) == 0)
a54d0d2c 884 (*tid_check)++;
a54d0d2c
JD
885 }
886 if (*pid_check == 0) {
da401e9c 887 if (strncmp(name, "pid", 3) == 0)
a54d0d2c
JD
888 (*pid_check)++;
889 }
890 if (*ppid_check == 0) {
bb6d72a2 891 if (strncmp(name, "ppid", 4) == 0)
a54d0d2c
JD
892 (*ppid_check)++;
893 }
894 if (*procname_check == 0) {
bb6d72a2 895 if (strncmp(name, "procname", 8) == 0)
a54d0d2c
JD
896 (*procname_check)++;
897 }
bb6d72a2
JD
898 if (strncmp(name, "perf_", 5) == 0) {
899 global = g_hash_table_lookup(global_perf_liszt, (gpointer) name);
900 if (!global) {
901 global = g_new0(struct perfcounter, 1);
902 /* by default, sort on the first perf context */
903 if (g_hash_table_size(global_perf_liszt) == 0)
904 global->sort = 1;
905 global->visible = 1;
906 g_hash_table_insert(global_perf_liszt, (gpointer) strdup(name), global);
907 }
908 }
a54d0d2c 909 }
bb6d72a2 910
a54d0d2c
JD
911 if (*tid_check == 1 && *pid_check == 1 && *ppid_check == 1 &&
912 *procname_check == 1)
913 return 0;
914
915 return -1;
916}
917
918/*
919 * check_requirements: check if the required context informations are available
920 *
921 * If each mandatory context information is available for at least in one
922 * event, return 0 otherwise return -1.
a54d0d2c
JD
923 */
924int check_requirements(struct bt_context *ctx)
925{
926 unsigned int i, evt_cnt, field_cnt;
927 struct bt_ctf_event_decl *const * evt_list;
928 const struct bt_ctf_field_decl *const * field_list;
929 int tid_check = 0;
930 int pid_check = 0;
931 int procname_check = 0;
932 int ppid_check = 0;
933 int ret = 0;
934
935 bt_ctf_get_event_decl_list(0, ctx, &evt_list, &evt_cnt);
936 for (i = 0; i < evt_cnt; i++) {
937 bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_EVENT_CONTEXT,
938 &field_list, &field_cnt);
939 ret = check_field_requirements(field_list, field_cnt,
940 &tid_check, &pid_check, &procname_check,
941 &ppid_check);
a54d0d2c
JD
942
943 bt_ctf_get_decl_fields(evt_list[i], BT_EVENT_CONTEXT,
944 &field_list, &field_cnt);
945 ret = check_field_requirements(field_list, field_cnt,
946 &tid_check, &pid_check, &procname_check,
947 &ppid_check);
a54d0d2c
JD
948
949 bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_PACKET_CONTEXT,
950 &field_list, &field_cnt);
951 ret = check_field_requirements(field_list, field_cnt,
952 &tid_check, &pid_check, &procname_check,
953 &ppid_check);
a54d0d2c
JD
954 }
955
956 if (tid_check == 0) {
957 ret = -1;
958 fprintf(stderr, "[error] missing tid context information\n");
959 }
960 if (pid_check == 0) {
961 ret = -1;
962 fprintf(stderr, "[error] missing pid context information\n");
963 }
964 if (ppid_check == 0) {
965 ret = -1;
966 fprintf(stderr, "[error] missing ppid context information\n");
967 }
968 if (procname_check == 0) {
969 ret = -1;
970 fprintf(stderr, "[error] missing procname context information\n");
971 }
972
a54d0d2c
JD
973 return ret;
974}
975
16b22a0f
JD
976ssize_t read_subbuffer(struct lttng_consumer_stream *kconsumerd_fd,
977 struct lttng_consumer_local_data *ctx)
978{
979 unsigned long len;
980 int err;
981 long ret = 0;
982 int infd = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd);
983
984 if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_SPLICE) {
985 /* Get the next subbuffer */
16b22a0f
JD
986 err = helper_kernctl_get_next_subbuf(infd);
987 if (err != 0) {
988 ret = errno;
989 perror("Reserving sub buffer failed (everything is normal, "
990 "it is due to concurrency)");
991 goto end;
992 }
993 /* read the whole subbuffer */
994 err = helper_kernctl_get_padded_subbuf_size(infd, &len);
995 if (err != 0) {
996 ret = errno;
997 perror("Getting sub-buffer len failed.");
998 goto end;
999 }
16b22a0f
JD
1000
1001 /* splice the subbuffer to the tracefile */
1002 ret = helper_lttng_consumer_on_read_subbuffer_splice(ctx, kconsumerd_fd, len);
1003 if (ret < 0) {
1004 /*
1005 * display the error but continue processing to try
1006 * to release the subbuffer
1007 */
1008 fprintf(stderr,"Error splicing to tracefile\n");
1009 }
16b22a0f
JD
1010 err = helper_kernctl_put_next_subbuf(infd);
1011 if (err != 0) {
1012 ret = errno;
1013 perror("Reserving sub buffer failed (everything is normal, "
1014 "it is due to concurrency)");
1015 goto end;
1016 }
4e6aeb3d 1017 sem_post(&metadata_available);
16b22a0f
JD
1018 }
1019
1020end:
1021 return 0;
1022}
1023
1024int on_update_fd(int key, uint32_t state)
1025{
1026 /* let the lib handle the metadata FD */
1027 if (key == sessiond_metadata)
1028 return 0;
1029 return 1;
1030}
1031
1032int on_recv_fd(struct lttng_consumer_stream *kconsumerd_fd)
1033{
1034 int ret;
b520ab45 1035 struct mmap_stream *new_mmap_stream;
16b22a0f 1036
16b22a0f
JD
1037 /* Opening the tracefile in write mode */
1038 if (helper_get_lttng_consumer_stream_path_name(kconsumerd_fd) != NULL) {
1039 ret = open(helper_get_lttng_consumer_stream_path_name(kconsumerd_fd),
1040 O_WRONLY|O_CREAT|O_TRUNC, S_IRWXU|S_IRWXG|S_IRWXO);
1041 if (ret < 0) {
1042 perror("open");
1043 goto end;
1044 }
1045 helper_set_lttng_consumer_stream_out_fd(kconsumerd_fd, ret);
1046 }
1047
1048 if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_MMAP) {
b520ab45
JD
1049 new_mmap_stream = malloc(sizeof(struct mmap_stream));
1050 new_mmap_stream->fd = helper_get_lttng_consumer_stream_wait_fd(
1051 kconsumerd_fd);
1052 bt_list_add(&new_mmap_stream->list, &mmap_list.head);
16b22a0f
JD
1053
1054 g_ptr_array_add(lttng_consumer_stream_array, kconsumerd_fd);
6112d0d4
JD
1055 /* keep mmap FDs internally */
1056 ret = 1;
16b22a0f
JD
1057 } else {
1058 consumerd_metadata = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd);
1059 sessiond_metadata = helper_get_lttng_consumer_stream_key(kconsumerd_fd);
1060 ret = 0;
1061 }
1062
050f9cf9
JD
1063 reload_trace = 1;
1064
16b22a0f
JD
1065end:
1066 return ret;
1067}
1068
eb677852 1069void live_consume(struct bt_context **bt_ctx)
e91044a8 1070{
e91044a8 1071 int ret;
050f9cf9 1072 FILE *metadata_fp;
e91044a8 1073
050f9cf9
JD
1074 sem_wait(&metadata_available);
1075 if (access("/tmp/livesession/kernel/metadata", F_OK) != 0) {
1076 fprintf(stderr,"no metadata\n");
1077 goto end;
71c74ca6 1078 }
050f9cf9 1079 metadata_fp = fopen("/tmp/livesession/kernel/metadata", "r");
c78f2cdc 1080
050f9cf9
JD
1081 *bt_ctx = bt_context_create();
1082 ret = bt_context_add_trace(*bt_ctx, NULL, "ctf",
1083 lttngtop_ctf_packet_seek, &mmap_list, metadata_fp);
1084 if (ret < 0) {
1085 printf("Error adding trace\n");
1086 goto end;
e91044a8 1087 }
b520ab45 1088
eb677852
JD
1089end:
1090 return;
e91044a8 1091}
16b22a0f
JD
1092
1093int setup_consumer(char *command_sock_path, pthread_t *threads,
1094 struct lttng_consumer_local_data *ctx)
1095{
1096 int ret = 0;
1097
1098 ctx = helper_lttng_consumer_create(HELPER_LTTNG_CONSUMER_KERNEL,
1099 read_subbuffer, NULL, on_recv_fd, on_update_fd);
1100 if (!ctx)
1101 goto end;
1102
1103 unlink(command_sock_path);
1104 helper_lttng_consumer_set_command_sock_path(ctx, command_sock_path);
1105 helper_lttng_consumer_init();
1106
1107 /* Create the thread to manage the receive of fd */
1108 ret = pthread_create(&threads[0], NULL, helper_lttng_consumer_thread_receive_fds,
1109 (void *) ctx);
1110 if (ret != 0) {
c78f2cdc 1111 perror("pthread_create receive fd");
16b22a0f
JD
1112 goto end;
1113 }
e91044a8
JD
1114 /* Create thread to manage the polling/writing of traces */
1115 ret = pthread_create(&threads[1], NULL, helper_lttng_consumer_thread_poll_fds,
1116 (void *) ctx);
1117 if (ret != 0) {
c78f2cdc 1118 perror("pthread_create poll fd");
e91044a8
JD
1119 goto end;
1120 }
1121
16b22a0f
JD
1122end:
1123 return ret;
1124}
1125
246d5992
JD
1126int enable_kprobes(struct lttng_handle *handle, char *channel_name)
1127{
1128 struct lttng_event ev;
1129 struct kprobes *kprobe;
1130 int ret = 0;
1131 int i;
1132
246d5992
JD
1133 for (i = 0; i < lttngtop.kprobes_table->len; i++) {
1134 kprobe = g_ptr_array_index(lttngtop.kprobes_table, i);
1135
1136 memset(&ev, '\0', sizeof(struct lttng_event));
1137 ev.type = LTTNG_EVENT_PROBE;
f16e36fc
JD
1138 if (kprobe->symbol_name)
1139 sprintf(ev.attr.probe.symbol_name, "%s", kprobe->symbol_name);
246d5992
JD
1140 sprintf(ev.name, "%s", kprobe->probe_name);
1141 ev.attr.probe.addr = kprobe->probe_addr;
1142 ev.attr.probe.offset = kprobe->probe_offset;
1143 if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
1144 fprintf(stderr,"error enabling kprobes : %s\n",
1145 helper_lttcomm_get_readable_code(ret));
1146 goto end;
1147 }
1148 }
1149
1150end:
1151 return ret;
1152}
1153
1a70b8ac 1154int setup_live_tracing()
16b22a0f
JD
1155{
1156 struct lttng_domain dom;
1157 struct lttng_channel chan;
1158 char *channel_name = "mmapchan";
16b22a0f
JD
1159 struct lttng_event ev;
1160 int ret = 0;
1161 char *command_sock_path = "/tmp/consumerd_sock";
1162 static pthread_t threads[2]; /* recv_fd, poll */
1163 struct lttng_event_context kctxpid, kctxcomm, kctxppid, kctxtid;
16b22a0f
JD
1164
1165 struct lttng_handle *handle;
1166
1167 BT_INIT_LIST_HEAD(&mmap_list.head);
1168
1169 lttng_consumer_stream_array = g_ptr_array_new();
1170
1171 if ((ret = setup_consumer(command_sock_path, threads, ctx)) < 0) {
1172 fprintf(stderr,"error setting up consumer\n");
1a70b8ac 1173 goto error;
16b22a0f
JD
1174 }
1175
1176 available_snapshots = g_ptr_array_new();
1177
1178 /* setup the session */
1179 dom.type = LTTNG_DOMAIN_KERNEL;
1180
eb677852 1181 ret = unlink("/tmp/livesession");
16b22a0f 1182
71c74ca6 1183 lttng_destroy_session("test");
16b22a0f
JD
1184 if ((ret = lttng_create_session("test", "/tmp/livesession")) < 0) {
1185 fprintf(stderr,"error creating the session : %s\n",
1186 helper_lttcomm_get_readable_code(ret));
1a70b8ac 1187 goto error;
16b22a0f
JD
1188 }
1189
1190 if ((handle = lttng_create_handle("test", &dom)) == NULL) {
1191 fprintf(stderr,"error creating handle\n");
1a70b8ac 1192 goto error_session;
16b22a0f
JD
1193 }
1194
050f9cf9
JD
1195 /*
1196 * FIXME : need to let the
1197 * helper_lttng_consumer_thread_receive_fds create the
1198 * socket.
1199 * Cleaner solution ?
1200 */
1201 while (access(command_sock_path, F_OK)) {
1202 sleep(0.1);
1203 }
1204
16b22a0f
JD
1205 if ((ret = lttng_register_consumer(handle, command_sock_path)) < 0) {
1206 fprintf(stderr,"error registering consumer : %s\n",
1207 helper_lttcomm_get_readable_code(ret));
1a70b8ac 1208 goto error_session;
16b22a0f
JD
1209 }
1210
1211 strcpy(chan.name, channel_name);
c78f2cdc 1212 chan.attr.overwrite = 0;
57bff788 1213 if (opt_tid && opt_textdump) {
d2d680e0
JD
1214 chan.attr.subbuf_size = 32768;
1215 chan.attr.num_subbuf = 8;
1216 } else {
1d2391b4
JD
1217 //chan.attr.subbuf_size = 1048576; /* 1MB */
1218 chan.attr.subbuf_size = 2097152; /* 1MB */
d2d680e0
JD
1219 chan.attr.num_subbuf = 4;
1220 }
16b22a0f
JD
1221 chan.attr.switch_timer_interval = 0;
1222 chan.attr.read_timer_interval = 200;
1223 chan.attr.output = LTTNG_EVENT_MMAP;
1224
1225 if ((ret = lttng_enable_channel(handle, &chan)) < 0) {
b872c906
JD
1226 fprintf(stderr,"error creating channel : %s\n",
1227 helper_lttcomm_get_readable_code(ret));
1a70b8ac 1228 goto error_session;
16b22a0f
JD
1229 }
1230
b872c906
JD
1231 memset(&ev, '\0', sizeof(struct lttng_event));
1232 //sprintf(ev.name, "sched_switch");
57bff788
JD
1233 ev.type = LTTNG_EVENT_TRACEPOINT;
1234 if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
1235 fprintf(stderr,"error enabling event : %s\n",
1236 helper_lttcomm_get_readable_code(ret));
1237 goto error_session;
1238 }
16b22a0f 1239
fbbda4da 1240 memset(&ev, '\0', sizeof(struct lttng_event));
6777529d
JD
1241 ev.type = LTTNG_EVENT_SYSCALL;
1242 if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
1243 fprintf(stderr,"error enabling syscalls : %s\n",
1244 helper_lttcomm_get_readable_code(ret));
1a70b8ac 1245 goto error_session;
6777529d
JD
1246 }
1247
957eed46
JD
1248 if (lttngtop.kprobes_table) {
1249 ret = enable_kprobes(handle, channel_name);
1250 if (ret < 0) {
1251 goto error_session;
1252 }
fbbda4da 1253 }
fbbda4da 1254
16b22a0f
JD
1255 kctxpid.ctx = LTTNG_EVENT_CONTEXT_PID;
1256 lttng_add_context(handle, &kctxpid, NULL, NULL);
16b22a0f
JD
1257 kctxtid.ctx = LTTNG_EVENT_CONTEXT_TID;
1258 lttng_add_context(handle, &kctxtid, NULL, NULL);
57bff788
JD
1259 kctxppid.ctx = LTTNG_EVENT_CONTEXT_PPID;
1260 lttng_add_context(handle, &kctxppid, NULL, NULL);
1261 kctxcomm.ctx = LTTNG_EVENT_CONTEXT_PROCNAME;
1262 lttng_add_context(handle, &kctxcomm, NULL, NULL);
1263 kctxpid.ctx = LTTNG_EVENT_CONTEXT_VPID;
1264 lttng_add_context(handle, &kctxpid, NULL, NULL);
1265 kctxtid.ctx = LTTNG_EVENT_CONTEXT_VTID;
1266 lttng_add_context(handle, &kctxtid, NULL, NULL);
c8d75a13
JD
1267 kctxtid.ctx = LTTNG_EVENT_CONTEXT_HOSTNAME;
1268 lttng_add_context(handle, &kctxtid, NULL, NULL);
16b22a0f
JD
1269
1270 if ((ret = lttng_start_tracing("test")) < 0) {
b872c906
JD
1271 fprintf(stderr,"error starting tracing : %s\n",
1272 helper_lttcomm_get_readable_code(ret));
1a70b8ac 1273 goto error_session;
16b22a0f
JD
1274 }
1275
1276 helper_kernctl_buffer_flush(consumerd_metadata);
e91044a8 1277
16b22a0f 1278 /* block until metadata is ready */
4e6aeb3d 1279 sem_init(&metadata_available, 0, 0);
16b22a0f 1280
1a70b8ac
JD
1281 return 0;
1282
1283error_session:
1284 lttng_destroy_session("test");
1285error:
1286 return -1;
16b22a0f
JD
1287}
1288
1fc22eb4
JD
1289int main(int argc, char **argv)
1290{
1291 int ret;
1292 struct bt_context *bt_ctx = NULL;
050f9cf9
JD
1293 struct mmap_stream *mmap_info;
1294 unsigned long mmap_len;
1fc22eb4 1295
957eed46 1296 init_lttngtop();
1fc22eb4
JD
1297 ret = parse_options(argc, argv);
1298 if (ret < 0) {
1299 fprintf(stdout, "Error parsing options.\n\n");
1300 usage(stdout);
1301 exit(EXIT_FAILURE);
1302 } else if (ret > 0) {
1303 exit(EXIT_SUCCESS);
1304 }
1305
16b22a0f 1306 if (!opt_input_path) {
24797198
JD
1307 if (opt_textdump) {
1308 signal(SIGTERM, handle_textdump_sigterm);
1309 signal(SIGINT, handle_textdump_sigterm);
1310 }
1a70b8ac
JD
1311 ret = setup_live_tracing();
1312 if (ret < 0) {
1313 goto end;
1314 }
6777529d
JD
1315 if (!opt_textdump) {
1316 pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL);
1317 pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL);
1318 }
050f9cf9
JD
1319 while (!quit) {
1320 reload_trace = 0;
1321 live_consume(&bt_ctx);
1322 iter_trace(bt_ctx);
1323 ret = bt_context_remove_trace(bt_ctx, 0);
1324 if (ret != 0)
1325 fprintf(stderr, "error removing trace\n");
1326 if (bt_ctx) {
1327 bt_context_put(bt_ctx);
1328 }
1329
1330 /*
1331 * since we receive all FDs every time there is an
1332 * update and the FD number is different every time,
1333 * we don't know which one are valid.
1334 * so we check if all FDs are usable with a simple
1335 * ioctl call.
1336 */
1337 bt_list_for_each_entry(mmap_info, &mmap_list.head, list) {
1338 ret = helper_kernctl_get_mmap_len(mmap_info->fd, &mmap_len);
1339 if (ret != 0) {
050f9cf9
JD
1340 bt_list_del(&mmap_info->list);
1341 }
1342 }
1343 sem_post(&metadata_available);
1344 }
eb677852 1345
ae9e85c7 1346 pthread_join(timer_thread, NULL);
eb677852
JD
1347 quit = 1;
1348 pthread_join(display_thread, NULL);
6777529d 1349
c78f2cdc 1350 lttng_stop_tracing("test");
c78f2cdc
JD
1351 lttng_destroy_session("test");
1352
1fc22eb4 1353 goto end;
16b22a0f 1354 } else {
957eed46 1355 //init_lttngtop();
16b22a0f
JD
1356
1357 bt_ctx = bt_context_create();
1358 ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL);
1359 if (ret < 0) {
1360 fprintf(stderr, "[error] Opening the trace\n");
1361 goto end;
1362 }
1fc22eb4 1363
16b22a0f
JD
1364 ret = check_requirements(bt_ctx);
1365 if (ret < 0) {
1366 fprintf(stderr, "[error] some mandatory contexts were missing, exiting.\n");
1367 goto end;
1368 }
1369 pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL);
1370 pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL);
1fc22eb4 1371
16b22a0f 1372 iter_trace(bt_ctx);
1fc22eb4 1373
16b22a0f 1374 pthread_join(display_thread, NULL);
ae9e85c7 1375 quit = 1;
16b22a0f
JD
1376 pthread_join(timer_thread, NULL);
1377 }
1fc22eb4
JD
1378
1379end:
16b22a0f
JD
1380 if (bt_ctx)
1381 bt_context_put(bt_ctx);
1382
1fc22eb4
JD
1383 return 0;
1384}
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