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