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> |
172f5d66 JD |
40 | #include <sys/mman.h> |
41 | #include <lttng/lttng.h> | |
42 | #include <lttng/lttngtop-helper.h> | |
67a84e40 | 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; | |
be5b48bd | 54 | static int opt_textdump; |
be5b48bd | 55 | static int opt_child; |
1fc22eb4 | 56 | |
da4a3c1d 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 | |
172f5d66 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; | |
0865cf6b 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; | |
37b4b0bb | 74 | int reload_trace = 0; |
172f5d66 | 75 | |
c983acc0 JD |
76 | int last_textdump_print_newline = 1; |
77 | ||
1fc22eb4 JD |
78 | enum { |
79 | OPT_NONE = 0, | |
80 | OPT_HELP, | |
84d2a515 | 81 | OPT_TEXTDUMP, |
be5b48bd JD |
82 | OPT_PID, |
83 | OPT_CHILD, | |
72201e5a | 84 | OPT_HOSTNAME, |
c2ad86d8 | 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 }, | |
84d2a515 | 91 | { "textdump", 't', POPT_ARG_NONE, NULL, OPT_TEXTDUMP, NULL, NULL }, |
be5b48bd | 92 | { "child", 'f', POPT_ARG_NONE, NULL, OPT_CHILD, NULL, NULL }, |
c983acc0 | 93 | { "pid", 'p', POPT_ARG_STRING, &opt_tid, OPT_PID, NULL, NULL }, |
72201e5a | 94 | { "hostname", 'n', POPT_ARG_STRING, &opt_hostname, OPT_HOSTNAME, NULL, NULL }, |
c2ad86d8 | 95 | { "kprobes", 'k', POPT_ARG_STRING, &opt_kprobes, OPT_KPROBES, NULL, NULL }, |
1fc22eb4 JD |
96 | { NULL, 0, 0, NULL, 0, NULL, NULL }, |
97 | }; | |
98 | ||
828afa52 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 | { | |
024eb6c6 JD |
107 | struct mmap_stream *mmap_info; |
108 | ||
1fc22eb4 | 109 | while (1) { |
da4a3c1d JD |
110 | if (quit) { |
111 | sem_post(&pause_sem); | |
112 | sem_post(&timer); | |
670078c9 | 113 | sem_post(&end_trace_sem); |
da4a3c1d | 114 | sem_post(&goodtodisplay); |
670078c9 | 115 | sem_post(&goodtoupdate); |
da4a3c1d JD |
116 | pthread_exit(0); |
117 | } | |
670078c9 | 118 | if (!opt_input_path) { |
c56c5515 JD |
119 | bt_list_for_each_entry(mmap_info, &mmap_list.head, list) |
120 | helper_kernctl_buffer_flush(mmap_info->fd); | |
670078c9 | 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 | ||
da4a3c1d | 145 | if (quit) { |
24306dda JD |
146 | sem_post(&pause_sem); |
147 | sem_post(&timer); | |
da4a3c1d 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 | ||
20e3acd5 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]); | |
5dbde311 | 186 | if (!bt_ctf_field_get_error() && str) |
20e3acd5 JD |
187 | printf("%s", str); |
188 | } | |
189 | } | |
190 | } | |
191 | ||
c1e6815a 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; | |
dbb34d88 | 200 | uint64_t ts_nsec_start; |
20e3acd5 | 201 | int pid, cpu_id; |
c56c5515 JD |
202 | int64_t syscall_ret; |
203 | const struct definition *scope; | |
20e3acd5 | 204 | const char *hostname, *procname; |
c1e6815a | 205 | |
c1e6815a JD |
206 | timestamp = bt_ctf_get_timestamp(call_data); |
207 | ||
dbb34d88 | 208 | start = format_timestamp(timestamp); |
c1e6815a JD |
209 | ts_nsec_start = timestamp % NSEC_PER_SEC; |
210 | ||
be5b48bd | 211 | pid = get_context_pid(call_data); |
c983acc0 | 212 | if (pid == -1ULL && opt_tid) { |
be5b48bd JD |
213 | goto error; |
214 | } | |
215 | ||
72201e5a | 216 | hostname = get_context_hostname(call_data); |
9aa7616e JD |
217 | if (opt_tid || opt_hostname) |
218 | if (!lookup_filter_tid_list(pid)) | |
219 | goto end; | |
220 | ||
20e3acd5 JD |
221 | cpu_id = get_cpu_id(call_data); |
222 | procname = get_context_comm(call_data); | |
223 | ||
c2ad86d8 JD |
224 | if ((strcmp(bt_ctf_event_name(call_data), "exit_syscall") == 0) && |
225 | !last_textdump_print_newline) { | |
c56c5515 JD |
226 | scope = bt_ctf_get_top_level_scope(call_data, |
227 | BT_EVENT_FIELDS); | |
228 | syscall_ret = bt_ctf_get_int64(bt_ctf_get_field(call_data, | |
229 | scope, "_ret")); | |
230 | printf("= %ld\n", syscall_ret); | |
c983acc0 | 231 | last_textdump_print_newline = 1; |
c56c5515 | 232 | } else { |
c983acc0 JD |
233 | /* we might have lost the exit_syscall event, so need to |
234 | * print the newline in this case */ | |
235 | if (last_textdump_print_newline == 0) | |
236 | printf("\n"); | |
20e3acd5 JD |
237 | printf("%02d:%02d:%02d.%09" PRIu64 " (%s) (cpu %d) [%s (%d)] %s (", |
238 | start.tm_hour, start.tm_min, start.tm_sec, | |
239 | ts_nsec_start, hostname, cpu_id, procname, pid, | |
240 | bt_ctf_event_name(call_data)); | |
241 | print_fields(call_data); | |
242 | printf(") "); | |
5dbde311 | 243 | if (strncmp(bt_ctf_event_name(call_data), "sys_", 4) != 0) { |
20e3acd5 | 244 | printf("\n"); |
5dbde311 JD |
245 | last_textdump_print_newline = 1; |
246 | } else { | |
247 | last_textdump_print_newline = 0; | |
20e3acd5 | 248 | } |
c56c5515 | 249 | } |
c1e6815a | 250 | |
be5b48bd | 251 | end: |
c1e6815a | 252 | return BT_CB_OK; |
be5b48bd JD |
253 | error: |
254 | return BT_CB_ERROR_STOP; | |
c1e6815a JD |
255 | } |
256 | ||
8d51f032 JD |
257 | enum bt_cb_ret handle_kprobes(struct bt_ctf_event *call_data, void *private_data) |
258 | { | |
259 | int i; | |
260 | struct kprobes *kprobe; | |
261 | ||
262 | /* for kprobes */ | |
263 | for (i = 0; i < lttngtop.kprobes_table->len; i++) { | |
264 | kprobe = g_ptr_array_index(lttngtop.kprobes_table, i); | |
265 | if (strcmp(bt_ctf_event_name(call_data), kprobe->probe_name) == 0) { | |
266 | kprobe->count++; | |
267 | } | |
268 | } | |
269 | ||
270 | return BT_CB_OK; | |
271 | } | |
272 | ||
1fc22eb4 JD |
273 | /* |
274 | * hook on each event to check the timestamp and refresh the display if | |
275 | * necessary | |
276 | */ | |
4adc8274 | 277 | enum bt_cb_ret check_timestamp(struct bt_ctf_event *call_data, void *private_data) |
1fc22eb4 JD |
278 | { |
279 | unsigned long timestamp; | |
280 | ||
67a84e40 | 281 | timestamp = bt_ctf_get_timestamp(call_data); |
1fc22eb4 JD |
282 | if (timestamp == -1ULL) |
283 | goto error; | |
284 | ||
285 | if (last_display_update == 0) | |
286 | last_display_update = timestamp; | |
287 | ||
288 | if (timestamp - last_display_update >= refresh_display) { | |
289 | sem_wait(&goodtoupdate); | |
290 | g_ptr_array_add(copies, get_copy_lttngtop(last_display_update, | |
291 | timestamp)); | |
292 | sem_post(&goodtodisplay); | |
293 | sem_post(&bootstrap); | |
294 | last_display_update = timestamp; | |
295 | } | |
296 | return BT_CB_OK; | |
297 | ||
298 | error: | |
299 | fprintf(stderr, "check_timestamp callback error\n"); | |
300 | return BT_CB_ERROR_STOP; | |
301 | } | |
302 | ||
303 | /* | |
304 | * get_perf_counter : get or create and return a perf_counter struct for | |
305 | * either a process or a cpu (only one of the 2 parameters mandatory) | |
306 | */ | |
307 | struct perfcounter *get_perf_counter(const char *name, struct processtop *proc, | |
308 | struct cputime *cpu) | |
309 | { | |
bb6d72a2 | 310 | struct perfcounter *ret; |
1fc22eb4 JD |
311 | GHashTable *table; |
312 | ||
313 | if (proc) | |
314 | table = proc->perf; | |
315 | else if (cpu) | |
316 | table = cpu->perf; | |
317 | else | |
318 | goto error; | |
319 | ||
320 | ret = g_hash_table_lookup(table, (gpointer) name); | |
321 | if (ret) | |
322 | goto end; | |
323 | ||
559c9f86 | 324 | ret = g_new0(struct perfcounter, 1); |
1fc22eb4 JD |
325 | /* by default, make it visible in the UI */ |
326 | ret->visible = 1; | |
85db4618 | 327 | g_hash_table_insert(table, (gpointer) strdup(name), ret); |
1fc22eb4 | 328 | |
1fc22eb4 JD |
329 | end: |
330 | return ret; | |
331 | ||
332 | error: | |
333 | return NULL; | |
334 | } | |
335 | ||
336 | void update_perf_value(struct processtop *proc, struct cputime *cpu, | |
337 | const char *name, int value) | |
338 | { | |
339 | struct perfcounter *cpu_perf, *process_perf; | |
340 | ||
341 | cpu_perf = get_perf_counter(name, NULL, cpu); | |
342 | if (cpu_perf->count < value) { | |
343 | process_perf = get_perf_counter(name, proc, NULL); | |
344 | process_perf->count += value - cpu_perf->count; | |
345 | cpu_perf->count = value; | |
346 | } | |
347 | } | |
348 | ||
4adc8274 | 349 | void extract_perf_counter_scope(const struct bt_ctf_event *event, |
3ba84bed | 350 | const struct definition *scope, |
1fc22eb4 JD |
351 | struct processtop *proc, |
352 | struct cputime *cpu) | |
353 | { | |
354 | struct definition const * const *list = NULL; | |
bb6d72a2 | 355 | const struct definition *field; |
1fc22eb4 | 356 | unsigned int count; |
bb6d72a2 JD |
357 | struct perfcounter *perfcounter; |
358 | GHashTableIter iter; | |
359 | gpointer key; | |
360 | int ret; | |
1fc22eb4 JD |
361 | |
362 | if (!scope) | |
363 | goto end; | |
364 | ||
365 | ret = bt_ctf_get_field_list(event, scope, &list, &count); | |
366 | if (ret < 0) | |
367 | goto end; | |
368 | ||
bb6d72a2 JD |
369 | if (count == 0) |
370 | goto end; | |
371 | ||
372 | g_hash_table_iter_init(&iter, global_perf_liszt); | |
373 | while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfcounter)) { | |
374 | field = bt_ctf_get_field(event, scope, (char *) key); | |
375 | if (field) { | |
376 | int value = bt_ctf_get_uint64(field); | |
1fc22eb4 JD |
377 | if (bt_ctf_field_get_error()) |
378 | continue; | |
bb6d72a2 | 379 | update_perf_value(proc, cpu, (char *) key, value); |
1fc22eb4 JD |
380 | } |
381 | } | |
382 | ||
383 | end: | |
384 | return; | |
385 | } | |
386 | ||
4adc8274 | 387 | void update_perf_counter(struct processtop *proc, const struct bt_ctf_event *event) |
1fc22eb4 | 388 | { |
1fc22eb4 | 389 | struct cputime *cpu; |
3ba84bed | 390 | const struct definition *scope; |
1fc22eb4 | 391 | |
d67167cd | 392 | cpu = get_cpu(get_cpu_id(event)); |
1fc22eb4 JD |
393 | |
394 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT); | |
395 | extract_perf_counter_scope(event, scope, proc, cpu); | |
396 | ||
397 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT); | |
398 | extract_perf_counter_scope(event, scope, proc, cpu); | |
399 | ||
400 | scope = bt_ctf_get_top_level_scope(event, BT_EVENT_CONTEXT); | |
401 | extract_perf_counter_scope(event, scope, proc, cpu); | |
1fc22eb4 JD |
402 | } |
403 | ||
4adc8274 | 404 | enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data, |
1fc22eb4 JD |
405 | void *private_data) |
406 | { | |
670078c9 | 407 | int pid, tid, ppid, vpid, vtid, vppid; |
72201e5a | 408 | char *comm, *hostname; |
1fc22eb4 | 409 | struct processtop *parent, *child; |
1fc22eb4 JD |
410 | unsigned long timestamp; |
411 | ||
67a84e40 | 412 | timestamp = bt_ctf_get_timestamp(call_data); |
1fc22eb4 JD |
413 | if (timestamp == -1ULL) |
414 | goto error; | |
415 | ||
1dec520a JD |
416 | pid = get_context_pid(call_data); |
417 | if (pid == -1ULL) { | |
1fc22eb4 JD |
418 | goto error; |
419 | } | |
c941855c | 420 | |
1dec520a JD |
421 | tid = get_context_tid(call_data); |
422 | if (tid == -1ULL) { | |
1fc22eb4 JD |
423 | goto error; |
424 | } | |
1dec520a JD |
425 | ppid = get_context_ppid(call_data); |
426 | if (ppid == -1ULL) { | |
1fc22eb4 JD |
427 | goto error; |
428 | } | |
670078c9 JD |
429 | vpid = get_context_vpid(call_data); |
430 | if (pid == -1ULL) { | |
431 | vpid = -1; | |
432 | } | |
433 | vtid = get_context_vtid(call_data); | |
434 | if (tid == -1ULL) { | |
435 | vtid = -1; | |
436 | } | |
437 | vppid = get_context_vppid(call_data); | |
438 | if (ppid == -1ULL) { | |
439 | vppid = -1; | |
440 | } | |
1dec520a JD |
441 | comm = get_context_comm(call_data); |
442 | if (!comm) { | |
1fc22eb4 JD |
443 | goto error; |
444 | } | |
72201e5a JD |
445 | /* optional */ |
446 | hostname = get_context_hostname(call_data); | |
1fc22eb4 JD |
447 | |
448 | /* find or create the current process */ | |
449 | child = find_process_tid(<tngtop, tid, comm); | |
450 | if (!child) | |
3f0a5298 | 451 | child = add_proc(<tngtop, tid, comm, timestamp, hostname); |
c941855c JD |
452 | if (!child) |
453 | goto end; | |
72201e5a | 454 | update_proc(child, pid, tid, ppid, vpid, vtid, vppid, comm, hostname); |
1fc22eb4 JD |
455 | |
456 | if (pid != tid) { | |
457 | /* find or create the parent */ | |
458 | parent = find_process_tid(<tngtop, pid, comm); | |
459 | if (!parent) { | |
3f0a5298 | 460 | parent = add_proc(<tngtop, pid, comm, timestamp, hostname); |
c941855c JD |
461 | if (parent) |
462 | parent->pid = pid; | |
1fc22eb4 JD |
463 | } |
464 | ||
465 | /* attach the parent to the current process */ | |
466 | child->threadparent = parent; | |
467 | add_thread(parent, child); | |
468 | } | |
469 | ||
470 | update_perf_counter(child, call_data); | |
471 | ||
c941855c | 472 | end: |
1fc22eb4 JD |
473 | return BT_CB_OK; |
474 | ||
475 | error: | |
476 | return BT_CB_ERROR_STOP; | |
477 | } | |
478 | ||
479 | void init_lttngtop() | |
480 | { | |
481 | copies = g_ptr_array_new(); | |
0d91c12a | 482 | global_perf_liszt = g_hash_table_new(g_str_hash, g_str_equal); |
9aa7616e | 483 | global_filter_list = g_hash_table_new(g_str_hash, g_str_equal); |
1fc22eb4 JD |
484 | |
485 | sem_init(&goodtodisplay, 0, 0); | |
486 | sem_init(&goodtoupdate, 0, 1); | |
487 | sem_init(&timer, 0, 1); | |
488 | sem_init(&bootstrap, 0, 0); | |
489 | sem_init(&pause_sem, 0, 1); | |
490 | sem_init(&end_trace_sem, 0, 0); | |
491 | ||
e05a35a6 JD |
492 | reset_global_counters(); |
493 | lttngtop.nbproc = 0; | |
494 | lttngtop.nbthreads = 0; | |
495 | lttngtop.nbfiles = 0; | |
496 | ||
5db6fc65 JD |
497 | lttngtop.process_hash_table = g_hash_table_new(g_direct_hash, |
498 | g_direct_equal); | |
1fc22eb4 JD |
499 | lttngtop.process_table = g_ptr_array_new(); |
500 | lttngtop.files_table = g_ptr_array_new(); | |
501 | lttngtop.cpu_table = g_ptr_array_new(); | |
9aa7616e JD |
502 | |
503 | toggle_filter = -1; | |
1fc22eb4 JD |
504 | } |
505 | ||
c263c4eb | 506 | void usage(FILE *fp) |
1fc22eb4 | 507 | { |
c263c4eb | 508 | fprintf(fp, "LTTngTop %s\n\n", VERSION); |
72201e5a JD |
509 | fprintf(fp, "Usage : lttngtop [OPTIONS] [TRACE]\n"); |
510 | fprintf(fp, " TRACE Path to the trace to analyse (no trace path for live tracing)\n"); | |
511 | fprintf(fp, " -h, --help This help message\n"); | |
512 | fprintf(fp, " -t, --textdump Display live events in text-only\n"); | |
513 | fprintf(fp, " -p, --pid Comma-separated list of PIDs to display\n"); | |
514 | fprintf(fp, " -f, --child Follow threads associated with selected PIDs\n"); | |
515 | fprintf(fp, " -n, --hostname Comma-separated list of hostnames to display (require hostname context in trace)\n"); | |
0862944d | 516 | fprintf(fp, " -k, --kprobes Comma-separated list of kprobes to insert (same format as lttng enable-event)\n"); |
1fc22eb4 JD |
517 | } |
518 | ||
c2ad86d8 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; | |
c983acc0 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; | |
84d2a515 JD |
614 | case OPT_TEXTDUMP: |
615 | opt_textdump = 1; | |
be5b48bd JD |
616 | break; |
617 | case OPT_CHILD: | |
618 | opt_textdump = 1; | |
619 | opt_child = 1; | |
620 | break; | |
621 | case OPT_PID: | |
9aa7616e | 622 | toggle_filter = 1; |
b7c86f5c | 623 | tid_filter_list = g_hash_table_new(g_str_hash, |
72201e5a | 624 | g_str_equal); |
c983acc0 JD |
625 | tmp_str = strtok(opt_tid, ","); |
626 | while (tmp_str) { | |
627 | tid = malloc(sizeof(int)); | |
628 | *tid = atoi(tmp_str); | |
b7c86f5c | 629 | g_hash_table_insert(tid_filter_list, |
72201e5a JD |
630 | (gpointer) tid, tid); |
631 | tmp_str = strtok(NULL, ","); | |
632 | } | |
633 | break; | |
634 | case OPT_HOSTNAME: | |
9aa7616e | 635 | toggle_filter = 1; |
b7c86f5c | 636 | hostname_filter_list = g_hash_table_new(g_str_hash, |
72201e5a JD |
637 | g_str_equal); |
638 | tmp_str = strtok(opt_hostname, ","); | |
639 | while (tmp_str) { | |
640 | char *new_str = strdup(tmp_str); | |
b7c86f5c | 641 | g_hash_table_insert(hostname_filter_list, |
72201e5a JD |
642 | (gpointer) new_str, |
643 | (gpointer) new_str); | |
c983acc0 JD |
644 | tmp_str = strtok(NULL, ","); |
645 | } | |
be5b48bd | 646 | break; |
c2ad86d8 JD |
647 | case OPT_KPROBES: |
648 | lttngtop.kprobes_table = g_ptr_array_new(); | |
649 | tmp_str = strtok(opt_kprobes, ","); | |
650 | while (tmp_str) { | |
651 | struct kprobes *kprobe; | |
652 | ||
653 | kprobe = parse_probe_opts(tmp_str); | |
654 | if (kprobe) { | |
655 | g_ptr_array_add( | |
656 | lttngtop.kprobes_table, | |
657 | kprobe); | |
658 | } else { | |
659 | ret = -EINVAL; | |
660 | goto end; | |
661 | } | |
662 | tmp_str = strtok(NULL, ","); | |
663 | } | |
664 | break; | |
1fc22eb4 JD |
665 | default: |
666 | ret = -EINVAL; | |
667 | goto end; | |
668 | } | |
669 | } | |
670 | ||
671 | opt_input_path = poptGetArg(pc); | |
172f5d66 | 672 | |
1fc22eb4 JD |
673 | end: |
674 | if (pc) { | |
675 | poptFreeContext(pc); | |
676 | } | |
677 | return ret; | |
678 | } | |
679 | ||
680 | void iter_trace(struct bt_context *bt_ctx) | |
681 | { | |
682 | struct bt_ctf_iter *iter; | |
683 | struct bt_iter_pos begin_pos; | |
8d51f032 | 684 | struct kprobes *kprobe; |
4adc8274 | 685 | const struct bt_ctf_event *event; |
8d51f032 | 686 | int i; |
1fc22eb4 JD |
687 | int ret = 0; |
688 | ||
689 | begin_pos.type = BT_SEEK_BEGIN; | |
690 | iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL); | |
691 | ||
9aa7616e JD |
692 | /* at each event, verify the status of the process table */ |
693 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
694 | fix_process_table, | |
695 | NULL, NULL, NULL); | |
84d2a515 JD |
696 | if (opt_textdump) { |
697 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
698 | print_timestamp, | |
699 | NULL, NULL, NULL); | |
700 | } else { | |
701 | /* at each event check if we need to refresh */ | |
702 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
703 | check_timestamp, | |
704 | NULL, NULL, NULL); | |
84d2a515 JD |
705 | /* to handle the scheduling events */ |
706 | bt_ctf_iter_add_callback(iter, | |
707 | g_quark_from_static_string("sched_switch"), | |
708 | NULL, 0, handle_sched_switch, NULL, NULL, NULL); | |
709 | /* to clean up the process table */ | |
710 | bt_ctf_iter_add_callback(iter, | |
711 | g_quark_from_static_string("sched_process_free"), | |
712 | NULL, 0, handle_sched_process_free, NULL, NULL, NULL); | |
713 | /* to get all the process from the statedumps */ | |
714 | bt_ctf_iter_add_callback(iter, | |
715 | g_quark_from_static_string( | |
716 | "lttng_statedump_process_state"), | |
717 | NULL, 0, handle_statedump_process_state, | |
718 | NULL, NULL, NULL); | |
719 | ||
720 | /* for IO top */ | |
721 | bt_ctf_iter_add_callback(iter, | |
722 | g_quark_from_static_string("exit_syscall"), | |
723 | NULL, 0, handle_exit_syscall, NULL, NULL, NULL); | |
724 | bt_ctf_iter_add_callback(iter, | |
725 | g_quark_from_static_string("sys_write"), | |
726 | NULL, 0, handle_sys_write, NULL, NULL, NULL); | |
727 | bt_ctf_iter_add_callback(iter, | |
728 | g_quark_from_static_string("sys_read"), | |
729 | NULL, 0, handle_sys_read, NULL, NULL, NULL); | |
730 | bt_ctf_iter_add_callback(iter, | |
731 | g_quark_from_static_string("sys_open"), | |
732 | NULL, 0, handle_sys_open, NULL, NULL, NULL); | |
733 | bt_ctf_iter_add_callback(iter, | |
734 | g_quark_from_static_string("sys_close"), | |
735 | NULL, 0, handle_sys_close, NULL, NULL, NULL); | |
736 | bt_ctf_iter_add_callback(iter, | |
737 | g_quark_from_static_string( | |
ceb3a221 | 738 | "lttng_statedump_file_descriptor"), |
84d2a515 JD |
739 | NULL, 0, handle_statedump_file_descriptor, |
740 | NULL, NULL, NULL); | |
8d51f032 JD |
741 | |
742 | /* for kprobes */ | |
9aa7616e JD |
743 | if (lttngtop.kprobes_table) { |
744 | for (i = 0; i < lttngtop.kprobes_table->len; i++) { | |
745 | kprobe = g_ptr_array_index(lttngtop.kprobes_table, i); | |
746 | bt_ctf_iter_add_callback(iter, | |
747 | g_quark_from_static_string( | |
748 | kprobe->probe_name), | |
749 | NULL, 0, handle_kprobes, | |
750 | NULL, NULL, NULL); | |
751 | } | |
8d51f032 | 752 | } |
84d2a515 JD |
753 | } |
754 | ||
5dbde311 | 755 | while ((event = bt_ctf_iter_read_event(iter)) != NULL) { |
37b4b0bb | 756 | if (quit || reload_trace) |
da4a3c1d | 757 | goto end_iter; |
1fc22eb4 JD |
758 | ret = bt_iter_next(bt_ctf_get_iter(iter)); |
759 | if (ret < 0) | |
760 | goto end_iter; | |
761 | } | |
762 | ||
763 | /* block until quit, we reached the end of the trace */ | |
764 | sem_wait(&end_trace_sem); | |
765 | ||
766 | end_iter: | |
06570214 | 767 | bt_ctf_iter_destroy(iter); |
1fc22eb4 JD |
768 | } |
769 | ||
770 | /* | |
771 | * bt_context_add_traces_recursive: Open a trace recursively | |
772 | * (copied from BSD code in converter/babeltrace.c) | |
773 | * | |
774 | * Find each trace present in the subdirectory starting from the given | |
775 | * path, and add them to the context. The packet_seek parameter can be | |
776 | * NULL: this specify to use the default format packet_seek. | |
777 | * | |
778 | * Return: 0 on success, nonzero on failure. | |
779 | * Unable to open toplevel: failure. | |
780 | * Unable to open some subdirectory or file: warn and continue; | |
781 | */ | |
782 | int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path, | |
783 | const char *format_str, | |
784 | void (*packet_seek)(struct stream_pos *pos, | |
785 | size_t offset, int whence)) | |
786 | { | |
787 | FTS *tree; | |
788 | FTSENT *node; | |
789 | GArray *trace_ids; | |
790 | char lpath[PATH_MAX]; | |
791 | char * const paths[2] = { lpath, NULL }; | |
0d567cf1 | 792 | int ret = -1; |
1fc22eb4 JD |
793 | |
794 | /* | |
795 | * Need to copy path, because fts_open can change it. | |
796 | * It is the pointer array, not the strings, that are constant. | |
797 | */ | |
798 | strncpy(lpath, path, PATH_MAX); | |
799 | lpath[PATH_MAX - 1] = '\0'; | |
800 | ||
801 | tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0); | |
802 | if (tree == NULL) { | |
803 | fprintf(stderr, "[error] [Context] Cannot traverse \"%s\" for reading.\n", | |
804 | path); | |
805 | return -EINVAL; | |
806 | } | |
807 | ||
808 | trace_ids = g_array_new(FALSE, TRUE, sizeof(int)); | |
809 | ||
810 | while ((node = fts_read(tree))) { | |
811 | int dirfd, metafd; | |
812 | ||
813 | if (!(node->fts_info & FTS_D)) | |
814 | continue; | |
815 | ||
816 | dirfd = open(node->fts_accpath, 0); | |
817 | if (dirfd < 0) { | |
818 | fprintf(stderr, "[error] [Context] Unable to open trace " | |
819 | "directory file descriptor.\n"); | |
820 | ret = dirfd; | |
821 | goto error; | |
822 | } | |
823 | metafd = openat(dirfd, "metadata", O_RDONLY); | |
824 | if (metafd < 0) { | |
7314c855 JD |
825 | close(dirfd); |
826 | ret = -1; | |
827 | continue; | |
1fc22eb4 JD |
828 | } else { |
829 | int trace_id; | |
830 | ||
831 | ret = close(metafd); | |
832 | if (ret < 0) { | |
833 | perror("close"); | |
834 | goto error; | |
835 | } | |
836 | ret = close(dirfd); | |
837 | if (ret < 0) { | |
838 | perror("close"); | |
839 | goto error; | |
840 | } | |
841 | ||
842 | trace_id = bt_context_add_trace(ctx, | |
843 | node->fts_accpath, format_str, | |
844 | packet_seek, NULL, NULL); | |
845 | if (trace_id < 0) { | |
0d567cf1 | 846 | fprintf(stderr, "[warning] [Context] opening trace \"%s\" from %s " |
1fc22eb4 | 847 | "for reading.\n", node->fts_accpath, path); |
0d567cf1 JD |
848 | /* Allow to skip erroneous traces. */ |
849 | continue; | |
1fc22eb4 JD |
850 | } |
851 | g_array_append_val(trace_ids, trace_id); | |
852 | } | |
853 | } | |
854 | ||
855 | g_array_free(trace_ids, TRUE); | |
0d567cf1 | 856 | return ret; |
1fc22eb4 JD |
857 | |
858 | error: | |
859 | return ret; | |
860 | } | |
861 | ||
4553b4d1 | 862 | static int check_field_requirements(const struct bt_ctf_field_decl *const * field_list, |
a54d0d2c JD |
863 | int field_cnt, int *tid_check, int *pid_check, |
864 | int *procname_check, int *ppid_check) | |
865 | { | |
866 | int j; | |
bb6d72a2 JD |
867 | struct perfcounter *global; |
868 | const char *name; | |
a54d0d2c JD |
869 | |
870 | for (j = 0; j < field_cnt; j++) { | |
bb6d72a2 | 871 | name = bt_ctf_get_decl_field_name(field_list[j]); |
a54d0d2c | 872 | if (*tid_check == 0) { |
bb6d72a2 | 873 | if (strncmp(name, "tid", 3) == 0) |
a54d0d2c | 874 | (*tid_check)++; |
a54d0d2c JD |
875 | } |
876 | if (*pid_check == 0) { | |
bb6d72a2 | 877 | if (strncmp(name, "tid", 3) == 0) |
a54d0d2c JD |
878 | (*pid_check)++; |
879 | } | |
880 | if (*ppid_check == 0) { | |
bb6d72a2 | 881 | if (strncmp(name, "ppid", 4) == 0) |
a54d0d2c JD |
882 | (*ppid_check)++; |
883 | } | |
884 | if (*procname_check == 0) { | |
bb6d72a2 | 885 | if (strncmp(name, "procname", 8) == 0) |
a54d0d2c JD |
886 | (*procname_check)++; |
887 | } | |
bb6d72a2 JD |
888 | if (strncmp(name, "perf_", 5) == 0) { |
889 | global = g_hash_table_lookup(global_perf_liszt, (gpointer) name); | |
890 | if (!global) { | |
891 | global = g_new0(struct perfcounter, 1); | |
892 | /* by default, sort on the first perf context */ | |
893 | if (g_hash_table_size(global_perf_liszt) == 0) | |
894 | global->sort = 1; | |
895 | global->visible = 1; | |
896 | g_hash_table_insert(global_perf_liszt, (gpointer) strdup(name), global); | |
897 | } | |
898 | } | |
a54d0d2c | 899 | } |
bb6d72a2 | 900 | |
a54d0d2c JD |
901 | if (*tid_check == 1 && *pid_check == 1 && *ppid_check == 1 && |
902 | *procname_check == 1) | |
903 | return 0; | |
904 | ||
905 | return -1; | |
906 | } | |
907 | ||
908 | /* | |
909 | * check_requirements: check if the required context informations are available | |
910 | * | |
911 | * If each mandatory context information is available for at least in one | |
912 | * event, return 0 otherwise return -1. | |
a54d0d2c JD |
913 | */ |
914 | int check_requirements(struct bt_context *ctx) | |
915 | { | |
916 | unsigned int i, evt_cnt, field_cnt; | |
917 | struct bt_ctf_event_decl *const * evt_list; | |
918 | const struct bt_ctf_field_decl *const * field_list; | |
919 | int tid_check = 0; | |
920 | int pid_check = 0; | |
921 | int procname_check = 0; | |
922 | int ppid_check = 0; | |
923 | int ret = 0; | |
924 | ||
925 | bt_ctf_get_event_decl_list(0, ctx, &evt_list, &evt_cnt); | |
926 | for (i = 0; i < evt_cnt; i++) { | |
927 | bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_EVENT_CONTEXT, | |
928 | &field_list, &field_cnt); | |
929 | ret = check_field_requirements(field_list, field_cnt, | |
930 | &tid_check, &pid_check, &procname_check, | |
931 | &ppid_check); | |
a54d0d2c JD |
932 | |
933 | bt_ctf_get_decl_fields(evt_list[i], BT_EVENT_CONTEXT, | |
934 | &field_list, &field_cnt); | |
935 | ret = check_field_requirements(field_list, field_cnt, | |
936 | &tid_check, &pid_check, &procname_check, | |
937 | &ppid_check); | |
a54d0d2c JD |
938 | |
939 | bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_PACKET_CONTEXT, | |
940 | &field_list, &field_cnt); | |
941 | ret = check_field_requirements(field_list, field_cnt, | |
942 | &tid_check, &pid_check, &procname_check, | |
943 | &ppid_check); | |
a54d0d2c JD |
944 | } |
945 | ||
946 | if (tid_check == 0) { | |
947 | ret = -1; | |
948 | fprintf(stderr, "[error] missing tid context information\n"); | |
949 | } | |
950 | if (pid_check == 0) { | |
951 | ret = -1; | |
952 | fprintf(stderr, "[error] missing pid context information\n"); | |
953 | } | |
954 | if (ppid_check == 0) { | |
955 | ret = -1; | |
956 | fprintf(stderr, "[error] missing ppid context information\n"); | |
957 | } | |
958 | if (procname_check == 0) { | |
959 | ret = -1; | |
960 | fprintf(stderr, "[error] missing procname context information\n"); | |
961 | } | |
962 | ||
a54d0d2c JD |
963 | return ret; |
964 | } | |
965 | ||
172f5d66 JD |
966 | ssize_t read_subbuffer(struct lttng_consumer_stream *kconsumerd_fd, |
967 | struct lttng_consumer_local_data *ctx) | |
968 | { | |
969 | unsigned long len; | |
970 | int err; | |
971 | long ret = 0; | |
972 | int infd = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd); | |
973 | ||
974 | if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_SPLICE) { | |
975 | /* Get the next subbuffer */ | |
172f5d66 JD |
976 | err = helper_kernctl_get_next_subbuf(infd); |
977 | if (err != 0) { | |
978 | ret = errno; | |
979 | perror("Reserving sub buffer failed (everything is normal, " | |
980 | "it is due to concurrency)"); | |
981 | goto end; | |
982 | } | |
983 | /* read the whole subbuffer */ | |
984 | err = helper_kernctl_get_padded_subbuf_size(infd, &len); | |
985 | if (err != 0) { | |
986 | ret = errno; | |
987 | perror("Getting sub-buffer len failed."); | |
988 | goto end; | |
989 | } | |
172f5d66 JD |
990 | |
991 | /* splice the subbuffer to the tracefile */ | |
992 | ret = helper_lttng_consumer_on_read_subbuffer_splice(ctx, kconsumerd_fd, len); | |
993 | if (ret < 0) { | |
994 | /* | |
995 | * display the error but continue processing to try | |
996 | * to release the subbuffer | |
997 | */ | |
998 | fprintf(stderr,"Error splicing to tracefile\n"); | |
999 | } | |
172f5d66 JD |
1000 | err = helper_kernctl_put_next_subbuf(infd); |
1001 | if (err != 0) { | |
1002 | ret = errno; | |
1003 | perror("Reserving sub buffer failed (everything is normal, " | |
1004 | "it is due to concurrency)"); | |
1005 | goto end; | |
1006 | } | |
0865cf6b | 1007 | sem_post(&metadata_available); |
172f5d66 JD |
1008 | } |
1009 | ||
1010 | end: | |
1011 | return 0; | |
1012 | } | |
1013 | ||
1014 | int on_update_fd(int key, uint32_t state) | |
1015 | { | |
1016 | /* let the lib handle the metadata FD */ | |
1017 | if (key == sessiond_metadata) | |
1018 | return 0; | |
1019 | return 1; | |
1020 | } | |
1021 | ||
1022 | int on_recv_fd(struct lttng_consumer_stream *kconsumerd_fd) | |
1023 | { | |
1024 | int ret; | |
dbb34d88 | 1025 | struct mmap_stream *new_mmap_stream; |
172f5d66 | 1026 | |
172f5d66 JD |
1027 | /* Opening the tracefile in write mode */ |
1028 | if (helper_get_lttng_consumer_stream_path_name(kconsumerd_fd) != NULL) { | |
1029 | ret = open(helper_get_lttng_consumer_stream_path_name(kconsumerd_fd), | |
1030 | O_WRONLY|O_CREAT|O_TRUNC, S_IRWXU|S_IRWXG|S_IRWXO); | |
1031 | if (ret < 0) { | |
1032 | perror("open"); | |
1033 | goto end; | |
1034 | } | |
1035 | helper_set_lttng_consumer_stream_out_fd(kconsumerd_fd, ret); | |
1036 | } | |
1037 | ||
1038 | if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_MMAP) { | |
dbb34d88 JD |
1039 | new_mmap_stream = malloc(sizeof(struct mmap_stream)); |
1040 | new_mmap_stream->fd = helper_get_lttng_consumer_stream_wait_fd( | |
1041 | kconsumerd_fd); | |
1042 | bt_list_add(&new_mmap_stream->list, &mmap_list.head); | |
172f5d66 JD |
1043 | |
1044 | g_ptr_array_add(lttng_consumer_stream_array, kconsumerd_fd); | |
c1e6815a JD |
1045 | /* keep mmap FDs internally */ |
1046 | ret = 1; | |
172f5d66 JD |
1047 | } else { |
1048 | consumerd_metadata = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd); | |
1049 | sessiond_metadata = helper_get_lttng_consumer_stream_key(kconsumerd_fd); | |
1050 | ret = 0; | |
1051 | } | |
1052 | ||
37b4b0bb JD |
1053 | reload_trace = 1; |
1054 | ||
172f5d66 JD |
1055 | end: |
1056 | return ret; | |
1057 | } | |
1058 | ||
a440e379 | 1059 | void live_consume(struct bt_context **bt_ctx) |
346f2b4c | 1060 | { |
346f2b4c | 1061 | int ret; |
37b4b0bb | 1062 | FILE *metadata_fp; |
346f2b4c | 1063 | |
37b4b0bb JD |
1064 | sem_wait(&metadata_available); |
1065 | if (access("/tmp/livesession/kernel/metadata", F_OK) != 0) { | |
1066 | fprintf(stderr,"no metadata\n"); | |
1067 | goto end; | |
f03aeb2f | 1068 | } |
37b4b0bb | 1069 | metadata_fp = fopen("/tmp/livesession/kernel/metadata", "r"); |
67a84e40 | 1070 | |
37b4b0bb JD |
1071 | *bt_ctx = bt_context_create(); |
1072 | ret = bt_context_add_trace(*bt_ctx, NULL, "ctf", | |
1073 | lttngtop_ctf_packet_seek, &mmap_list, metadata_fp); | |
1074 | if (ret < 0) { | |
1075 | printf("Error adding trace\n"); | |
1076 | goto end; | |
346f2b4c | 1077 | } |
dbb34d88 | 1078 | |
a440e379 JD |
1079 | end: |
1080 | return; | |
346f2b4c | 1081 | } |
172f5d66 JD |
1082 | |
1083 | int setup_consumer(char *command_sock_path, pthread_t *threads, | |
1084 | struct lttng_consumer_local_data *ctx) | |
1085 | { | |
1086 | int ret = 0; | |
1087 | ||
1088 | ctx = helper_lttng_consumer_create(HELPER_LTTNG_CONSUMER_KERNEL, | |
1089 | read_subbuffer, NULL, on_recv_fd, on_update_fd); | |
1090 | if (!ctx) | |
1091 | goto end; | |
1092 | ||
1093 | unlink(command_sock_path); | |
1094 | helper_lttng_consumer_set_command_sock_path(ctx, command_sock_path); | |
1095 | helper_lttng_consumer_init(); | |
1096 | ||
1097 | /* Create the thread to manage the receive of fd */ | |
1098 | ret = pthread_create(&threads[0], NULL, helper_lttng_consumer_thread_receive_fds, | |
1099 | (void *) ctx); | |
1100 | if (ret != 0) { | |
67a84e40 | 1101 | perror("pthread_create receive fd"); |
172f5d66 JD |
1102 | goto end; |
1103 | } | |
346f2b4c JD |
1104 | /* Create thread to manage the polling/writing of traces */ |
1105 | ret = pthread_create(&threads[1], NULL, helper_lttng_consumer_thread_poll_fds, | |
1106 | (void *) ctx); | |
1107 | if (ret != 0) { | |
67a84e40 | 1108 | perror("pthread_create poll fd"); |
346f2b4c JD |
1109 | goto end; |
1110 | } | |
1111 | ||
172f5d66 JD |
1112 | end: |
1113 | return ret; | |
1114 | } | |
1115 | ||
8d51f032 JD |
1116 | int enable_kprobes(struct lttng_handle *handle, char *channel_name) |
1117 | { | |
1118 | struct lttng_event ev; | |
1119 | struct kprobes *kprobe; | |
1120 | int ret = 0; | |
1121 | int i; | |
1122 | ||
8d51f032 JD |
1123 | for (i = 0; i < lttngtop.kprobes_table->len; i++) { |
1124 | kprobe = g_ptr_array_index(lttngtop.kprobes_table, i); | |
1125 | ||
1126 | memset(&ev, '\0', sizeof(struct lttng_event)); | |
1127 | ev.type = LTTNG_EVENT_PROBE; | |
c2ad86d8 JD |
1128 | if (kprobe->symbol_name) |
1129 | sprintf(ev.attr.probe.symbol_name, "%s", kprobe->symbol_name); | |
8d51f032 JD |
1130 | sprintf(ev.name, "%s", kprobe->probe_name); |
1131 | ev.attr.probe.addr = kprobe->probe_addr; | |
1132 | ev.attr.probe.offset = kprobe->probe_offset; | |
1133 | if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) { | |
1134 | fprintf(stderr,"error enabling kprobes : %s\n", | |
1135 | helper_lttcomm_get_readable_code(ret)); | |
1136 | goto end; | |
1137 | } | |
1138 | } | |
1139 | ||
1140 | end: | |
1141 | return ret; | |
1142 | } | |
1143 | ||
33ff396d | 1144 | int setup_live_tracing() |
172f5d66 JD |
1145 | { |
1146 | struct lttng_domain dom; | |
1147 | struct lttng_channel chan; | |
1148 | char *channel_name = "mmapchan"; | |
172f5d66 JD |
1149 | struct lttng_event ev; |
1150 | int ret = 0; | |
1151 | char *command_sock_path = "/tmp/consumerd_sock"; | |
1152 | static pthread_t threads[2]; /* recv_fd, poll */ | |
1153 | struct lttng_event_context kctxpid, kctxcomm, kctxppid, kctxtid; | |
172f5d66 JD |
1154 | |
1155 | struct lttng_handle *handle; | |
1156 | ||
1157 | BT_INIT_LIST_HEAD(&mmap_list.head); | |
1158 | ||
1159 | lttng_consumer_stream_array = g_ptr_array_new(); | |
1160 | ||
1161 | if ((ret = setup_consumer(command_sock_path, threads, ctx)) < 0) { | |
1162 | fprintf(stderr,"error setting up consumer\n"); | |
33ff396d | 1163 | goto error; |
172f5d66 JD |
1164 | } |
1165 | ||
1166 | available_snapshots = g_ptr_array_new(); | |
1167 | ||
1168 | /* setup the session */ | |
1169 | dom.type = LTTNG_DOMAIN_KERNEL; | |
1170 | ||
a440e379 | 1171 | ret = unlink("/tmp/livesession"); |
172f5d66 | 1172 | |
f03aeb2f | 1173 | lttng_destroy_session("test"); |
172f5d66 JD |
1174 | if ((ret = lttng_create_session("test", "/tmp/livesession")) < 0) { |
1175 | fprintf(stderr,"error creating the session : %s\n", | |
1176 | helper_lttcomm_get_readable_code(ret)); | |
33ff396d | 1177 | goto error; |
172f5d66 JD |
1178 | } |
1179 | ||
1180 | if ((handle = lttng_create_handle("test", &dom)) == NULL) { | |
1181 | fprintf(stderr,"error creating handle\n"); | |
33ff396d | 1182 | goto error_session; |
172f5d66 JD |
1183 | } |
1184 | ||
37b4b0bb JD |
1185 | /* |
1186 | * FIXME : need to let the | |
1187 | * helper_lttng_consumer_thread_receive_fds create the | |
1188 | * socket. | |
1189 | * Cleaner solution ? | |
1190 | */ | |
1191 | while (access(command_sock_path, F_OK)) { | |
1192 | sleep(0.1); | |
1193 | } | |
1194 | ||
172f5d66 JD |
1195 | if ((ret = lttng_register_consumer(handle, command_sock_path)) < 0) { |
1196 | fprintf(stderr,"error registering consumer : %s\n", | |
1197 | helper_lttcomm_get_readable_code(ret)); | |
33ff396d | 1198 | goto error_session; |
172f5d66 JD |
1199 | } |
1200 | ||
1201 | strcpy(chan.name, channel_name); | |
67a84e40 | 1202 | chan.attr.overwrite = 0; |
c983acc0 | 1203 | if (opt_tid && opt_textdump) { |
c56c5515 JD |
1204 | chan.attr.subbuf_size = 32768; |
1205 | chan.attr.num_subbuf = 8; | |
1206 | } else { | |
f26276d3 JD |
1207 | //chan.attr.subbuf_size = 1048576; /* 1MB */ |
1208 | chan.attr.subbuf_size = 2097152; /* 1MB */ | |
c56c5515 JD |
1209 | chan.attr.num_subbuf = 4; |
1210 | } | |
172f5d66 JD |
1211 | chan.attr.switch_timer_interval = 0; |
1212 | chan.attr.read_timer_interval = 200; | |
1213 | chan.attr.output = LTTNG_EVENT_MMAP; | |
1214 | ||
1215 | if ((ret = lttng_enable_channel(handle, &chan)) < 0) { | |
154f4a27 JD |
1216 | fprintf(stderr,"error creating channel : %s\n", |
1217 | helper_lttcomm_get_readable_code(ret)); | |
33ff396d | 1218 | goto error_session; |
172f5d66 JD |
1219 | } |
1220 | ||
154f4a27 JD |
1221 | memset(&ev, '\0', sizeof(struct lttng_event)); |
1222 | //sprintf(ev.name, "sched_switch"); | |
c983acc0 JD |
1223 | ev.type = LTTNG_EVENT_TRACEPOINT; |
1224 | if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) { | |
1225 | fprintf(stderr,"error enabling event : %s\n", | |
1226 | helper_lttcomm_get_readable_code(ret)); | |
1227 | goto error_session; | |
1228 | } | |
172f5d66 | 1229 | |
5dbde311 | 1230 | memset(&ev, '\0', sizeof(struct lttng_event)); |
84d2a515 JD |
1231 | ev.type = LTTNG_EVENT_SYSCALL; |
1232 | if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) { | |
1233 | fprintf(stderr,"error enabling syscalls : %s\n", | |
1234 | helper_lttcomm_get_readable_code(ret)); | |
33ff396d | 1235 | goto error_session; |
84d2a515 JD |
1236 | } |
1237 | ||
ba750263 JD |
1238 | if (lttngtop.kprobes_table) { |
1239 | ret = enable_kprobes(handle, channel_name); | |
1240 | if (ret < 0) { | |
1241 | goto error_session; | |
1242 | } | |
5dbde311 | 1243 | } |
5dbde311 | 1244 | |
172f5d66 JD |
1245 | kctxpid.ctx = LTTNG_EVENT_CONTEXT_PID; |
1246 | lttng_add_context(handle, &kctxpid, NULL, NULL); | |
172f5d66 JD |
1247 | kctxtid.ctx = LTTNG_EVENT_CONTEXT_TID; |
1248 | lttng_add_context(handle, &kctxtid, NULL, NULL); | |
c983acc0 JD |
1249 | kctxppid.ctx = LTTNG_EVENT_CONTEXT_PPID; |
1250 | lttng_add_context(handle, &kctxppid, NULL, NULL); | |
1251 | kctxcomm.ctx = LTTNG_EVENT_CONTEXT_PROCNAME; | |
1252 | lttng_add_context(handle, &kctxcomm, NULL, NULL); | |
1253 | kctxpid.ctx = LTTNG_EVENT_CONTEXT_VPID; | |
1254 | lttng_add_context(handle, &kctxpid, NULL, NULL); | |
1255 | kctxtid.ctx = LTTNG_EVENT_CONTEXT_VTID; | |
1256 | lttng_add_context(handle, &kctxtid, NULL, NULL); | |
72201e5a JD |
1257 | kctxtid.ctx = LTTNG_EVENT_CONTEXT_HOSTNAME; |
1258 | lttng_add_context(handle, &kctxtid, NULL, NULL); | |
172f5d66 JD |
1259 | |
1260 | if ((ret = lttng_start_tracing("test")) < 0) { | |
154f4a27 JD |
1261 | fprintf(stderr,"error starting tracing : %s\n", |
1262 | helper_lttcomm_get_readable_code(ret)); | |
33ff396d | 1263 | goto error_session; |
172f5d66 JD |
1264 | } |
1265 | ||
1266 | helper_kernctl_buffer_flush(consumerd_metadata); | |
346f2b4c | 1267 | |
172f5d66 | 1268 | /* block until metadata is ready */ |
0865cf6b | 1269 | sem_init(&metadata_available, 0, 0); |
172f5d66 | 1270 | |
33ff396d JD |
1271 | return 0; |
1272 | ||
1273 | error_session: | |
1274 | lttng_destroy_session("test"); | |
1275 | error: | |
1276 | return -1; | |
172f5d66 JD |
1277 | } |
1278 | ||
1fc22eb4 JD |
1279 | int main(int argc, char **argv) |
1280 | { | |
1281 | int ret; | |
1282 | struct bt_context *bt_ctx = NULL; | |
37b4b0bb JD |
1283 | struct mmap_stream *mmap_info; |
1284 | unsigned long mmap_len; | |
1fc22eb4 | 1285 | |
ba750263 | 1286 | init_lttngtop(); |
1fc22eb4 JD |
1287 | ret = parse_options(argc, argv); |
1288 | if (ret < 0) { | |
1289 | fprintf(stdout, "Error parsing options.\n\n"); | |
1290 | usage(stdout); | |
1291 | exit(EXIT_FAILURE); | |
1292 | } else if (ret > 0) { | |
1293 | exit(EXIT_SUCCESS); | |
1294 | } | |
1295 | ||
172f5d66 | 1296 | if (!opt_input_path) { |
828afa52 JD |
1297 | if (opt_textdump) { |
1298 | signal(SIGTERM, handle_textdump_sigterm); | |
1299 | signal(SIGINT, handle_textdump_sigterm); | |
1300 | } | |
33ff396d JD |
1301 | ret = setup_live_tracing(); |
1302 | if (ret < 0) { | |
1303 | goto end; | |
1304 | } | |
84d2a515 JD |
1305 | if (!opt_textdump) { |
1306 | pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL); | |
1307 | pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL); | |
1308 | } | |
37b4b0bb JD |
1309 | while (!quit) { |
1310 | reload_trace = 0; | |
1311 | live_consume(&bt_ctx); | |
1312 | iter_trace(bt_ctx); | |
1313 | ret = bt_context_remove_trace(bt_ctx, 0); | |
1314 | if (ret != 0) | |
1315 | fprintf(stderr, "error removing trace\n"); | |
1316 | if (bt_ctx) { | |
1317 | bt_context_put(bt_ctx); | |
1318 | } | |
1319 | ||
1320 | /* | |
1321 | * since we receive all FDs every time there is an | |
1322 | * update and the FD number is different every time, | |
1323 | * we don't know which one are valid. | |
1324 | * so we check if all FDs are usable with a simple | |
1325 | * ioctl call. | |
1326 | */ | |
1327 | bt_list_for_each_entry(mmap_info, &mmap_list.head, list) { | |
1328 | ret = helper_kernctl_get_mmap_len(mmap_info->fd, &mmap_len); | |
1329 | if (ret != 0) { | |
37b4b0bb JD |
1330 | bt_list_del(&mmap_info->list); |
1331 | } | |
1332 | } | |
1333 | sem_post(&metadata_available); | |
1334 | } | |
a440e379 | 1335 | |
da4a3c1d | 1336 | pthread_join(timer_thread, NULL); |
a440e379 JD |
1337 | quit = 1; |
1338 | pthread_join(display_thread, NULL); | |
84d2a515 | 1339 | |
67a84e40 | 1340 | lttng_stop_tracing("test"); |
67a84e40 JD |
1341 | lttng_destroy_session("test"); |
1342 | ||
1fc22eb4 | 1343 | goto end; |
172f5d66 | 1344 | } else { |
ba750263 | 1345 | //init_lttngtop(); |
172f5d66 JD |
1346 | |
1347 | bt_ctx = bt_context_create(); | |
1348 | ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL); | |
1349 | if (ret < 0) { | |
1350 | fprintf(stderr, "[error] Opening the trace\n"); | |
1351 | goto end; | |
1352 | } | |
1fc22eb4 | 1353 | |
172f5d66 JD |
1354 | ret = check_requirements(bt_ctx); |
1355 | if (ret < 0) { | |
1356 | fprintf(stderr, "[error] some mandatory contexts were missing, exiting.\n"); | |
1357 | goto end; | |
1358 | } | |
1359 | pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL); | |
1360 | pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL); | |
1fc22eb4 | 1361 | |
172f5d66 | 1362 | iter_trace(bt_ctx); |
1fc22eb4 | 1363 | |
172f5d66 | 1364 | pthread_join(display_thread, NULL); |
da4a3c1d | 1365 | quit = 1; |
172f5d66 JD |
1366 | pthread_join(timer_thread, NULL); |
1367 | } | |
1fc22eb4 JD |
1368 | |
1369 | end: | |
172f5d66 JD |
1370 | if (bt_ctx) |
1371 | bt_context_put(bt_ctx); | |
1372 | ||
1fc22eb4 JD |
1373 | return 0; |
1374 | } |