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; | |
84d2a515 | 54 | int opt_textdump; |
1fc22eb4 | 55 | |
da4a3c1d JD |
56 | int quit = 0; |
57 | ||
1fc22eb4 JD |
58 | struct lttngtop *copy; |
59 | pthread_t display_thread; | |
60 | pthread_t timer_thread; | |
61 | ||
62 | unsigned long refresh_display = 1 * NSEC_PER_SEC; | |
63 | unsigned long last_display_update = 0; | |
1fc22eb4 | 64 | |
172f5d66 JD |
65 | /* list of FDs available for being read with snapshots */ |
66 | struct mmap_stream_list mmap_list; | |
67 | GPtrArray *lttng_consumer_stream_array; | |
68 | int sessiond_metadata, consumerd_metadata; | |
0865cf6b JD |
69 | struct lttng_consumer_local_data *ctx = NULL; |
70 | /* list of snapshots currently not consumed */ | |
71 | GPtrArray *available_snapshots; | |
72 | sem_t metadata_available; | |
73 | FILE *metadata_fp; | |
74 | int trace_opened = 0; | |
75 | int metadata_ready = 0; | |
172f5d66 | 76 | |
1fc22eb4 JD |
77 | enum { |
78 | OPT_NONE = 0, | |
79 | OPT_HELP, | |
84d2a515 | 80 | OPT_TEXTDUMP, |
1fc22eb4 JD |
81 | }; |
82 | ||
83 | static struct poptOption long_options[] = { | |
84 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
85 | { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL }, | |
84d2a515 | 86 | { "textdump", 't', POPT_ARG_NONE, NULL, OPT_TEXTDUMP, NULL, NULL }, |
1fc22eb4 JD |
87 | { NULL, 0, 0, NULL, 0, NULL, NULL }, |
88 | }; | |
89 | ||
90 | void *refresh_thread(void *p) | |
91 | { | |
024eb6c6 JD |
92 | struct mmap_stream *mmap_info; |
93 | ||
1fc22eb4 | 94 | while (1) { |
da4a3c1d JD |
95 | if (quit) { |
96 | sem_post(&pause_sem); | |
97 | sem_post(&timer); | |
98 | sem_post(&goodtodisplay); | |
99 | pthread_exit(0); | |
100 | } | |
024eb6c6 JD |
101 | bt_list_for_each_entry(mmap_info, &mmap_list.head, list) |
102 | helper_kernctl_buffer_flush(mmap_info->fd); | |
1fc22eb4 JD |
103 | sem_wait(&pause_sem); |
104 | sem_post(&pause_sem); | |
105 | sem_post(&timer); | |
106 | sleep(refresh_display/NSEC_PER_SEC); | |
107 | } | |
108 | } | |
109 | ||
110 | void *ncurses_display(void *p) | |
111 | { | |
112 | unsigned int current_display_index = 0; | |
113 | ||
114 | sem_wait(&bootstrap); | |
b332d28f JD |
115 | /* |
116 | * Prevent the 1 second delay when we hit ESC | |
117 | */ | |
118 | ESCDELAY = 0; | |
1fc22eb4 JD |
119 | init_ncurses(); |
120 | ||
121 | while (1) { | |
122 | sem_wait(&timer); | |
123 | sem_wait(&goodtodisplay); | |
124 | sem_wait(&pause_sem); | |
125 | ||
da4a3c1d | 126 | if (quit) { |
24306dda JD |
127 | sem_post(&pause_sem); |
128 | sem_post(&timer); | |
da4a3c1d JD |
129 | reset_ncurses(); |
130 | pthread_exit(0); | |
131 | } | |
132 | ||
1fc22eb4 | 133 | copy = g_ptr_array_index(copies, current_display_index); |
85db4618 JD |
134 | assert(copy); |
135 | display(current_display_index++); | |
1fc22eb4 JD |
136 | |
137 | sem_post(&goodtoupdate); | |
138 | sem_post(&pause_sem); | |
1fc22eb4 JD |
139 | } |
140 | } | |
141 | ||
c1e6815a JD |
142 | /* |
143 | * hook on each event to check the timestamp and refresh the display if | |
144 | * necessary | |
145 | */ | |
146 | enum bt_cb_ret print_timestamp(struct bt_ctf_event *call_data, void *private_data) | |
147 | { | |
148 | unsigned long timestamp; | |
149 | struct tm start; | |
dbb34d88 | 150 | uint64_t ts_nsec_start; |
c1e6815a | 151 | |
c1e6815a JD |
152 | timestamp = bt_ctf_get_timestamp(call_data); |
153 | ||
dbb34d88 | 154 | start = format_timestamp(timestamp); |
c1e6815a JD |
155 | ts_nsec_start = timestamp % NSEC_PER_SEC; |
156 | ||
f03aeb2f JD |
157 | printf("%02d:%02d:%02d.%09" PRIu64 " %s\n", start.tm_hour, |
158 | start.tm_min, start.tm_sec, ts_nsec_start, | |
159 | bt_ctf_event_name(call_data)); | |
c1e6815a JD |
160 | |
161 | return BT_CB_OK; | |
162 | } | |
163 | ||
1fc22eb4 JD |
164 | /* |
165 | * hook on each event to check the timestamp and refresh the display if | |
166 | * necessary | |
167 | */ | |
4adc8274 | 168 | enum bt_cb_ret check_timestamp(struct bt_ctf_event *call_data, void *private_data) |
1fc22eb4 JD |
169 | { |
170 | unsigned long timestamp; | |
171 | ||
67a84e40 | 172 | timestamp = bt_ctf_get_timestamp(call_data); |
1fc22eb4 JD |
173 | if (timestamp == -1ULL) |
174 | goto error; | |
175 | ||
176 | if (last_display_update == 0) | |
177 | last_display_update = timestamp; | |
178 | ||
179 | if (timestamp - last_display_update >= refresh_display) { | |
180 | sem_wait(&goodtoupdate); | |
181 | g_ptr_array_add(copies, get_copy_lttngtop(last_display_update, | |
182 | timestamp)); | |
183 | sem_post(&goodtodisplay); | |
184 | sem_post(&bootstrap); | |
185 | last_display_update = timestamp; | |
186 | } | |
187 | return BT_CB_OK; | |
188 | ||
189 | error: | |
190 | fprintf(stderr, "check_timestamp callback error\n"); | |
191 | return BT_CB_ERROR_STOP; | |
192 | } | |
193 | ||
194 | /* | |
195 | * get_perf_counter : get or create and return a perf_counter struct for | |
196 | * either a process or a cpu (only one of the 2 parameters mandatory) | |
197 | */ | |
198 | struct perfcounter *get_perf_counter(const char *name, struct processtop *proc, | |
199 | struct cputime *cpu) | |
200 | { | |
bb6d72a2 | 201 | struct perfcounter *ret; |
1fc22eb4 JD |
202 | GHashTable *table; |
203 | ||
204 | if (proc) | |
205 | table = proc->perf; | |
206 | else if (cpu) | |
207 | table = cpu->perf; | |
208 | else | |
209 | goto error; | |
210 | ||
211 | ret = g_hash_table_lookup(table, (gpointer) name); | |
212 | if (ret) | |
213 | goto end; | |
214 | ||
559c9f86 | 215 | ret = g_new0(struct perfcounter, 1); |
1fc22eb4 JD |
216 | /* by default, make it visible in the UI */ |
217 | ret->visible = 1; | |
85db4618 | 218 | g_hash_table_insert(table, (gpointer) strdup(name), ret); |
1fc22eb4 | 219 | |
1fc22eb4 JD |
220 | end: |
221 | return ret; | |
222 | ||
223 | error: | |
224 | return NULL; | |
225 | } | |
226 | ||
227 | void update_perf_value(struct processtop *proc, struct cputime *cpu, | |
228 | const char *name, int value) | |
229 | { | |
230 | struct perfcounter *cpu_perf, *process_perf; | |
231 | ||
232 | cpu_perf = get_perf_counter(name, NULL, cpu); | |
233 | if (cpu_perf->count < value) { | |
234 | process_perf = get_perf_counter(name, proc, NULL); | |
235 | process_perf->count += value - cpu_perf->count; | |
236 | cpu_perf->count = value; | |
237 | } | |
238 | } | |
239 | ||
4adc8274 | 240 | void extract_perf_counter_scope(const struct bt_ctf_event *event, |
3ba84bed | 241 | const struct definition *scope, |
1fc22eb4 JD |
242 | struct processtop *proc, |
243 | struct cputime *cpu) | |
244 | { | |
245 | struct definition const * const *list = NULL; | |
bb6d72a2 | 246 | const struct definition *field; |
1fc22eb4 | 247 | unsigned int count; |
bb6d72a2 JD |
248 | struct perfcounter *perfcounter; |
249 | GHashTableIter iter; | |
250 | gpointer key; | |
251 | int ret; | |
1fc22eb4 JD |
252 | |
253 | if (!scope) | |
254 | goto end; | |
255 | ||
256 | ret = bt_ctf_get_field_list(event, scope, &list, &count); | |
257 | if (ret < 0) | |
258 | goto end; | |
259 | ||
bb6d72a2 JD |
260 | if (count == 0) |
261 | goto end; | |
262 | ||
263 | g_hash_table_iter_init(&iter, global_perf_liszt); | |
264 | while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfcounter)) { | |
265 | field = bt_ctf_get_field(event, scope, (char *) key); | |
266 | if (field) { | |
267 | int value = bt_ctf_get_uint64(field); | |
1fc22eb4 JD |
268 | if (bt_ctf_field_get_error()) |
269 | continue; | |
bb6d72a2 | 270 | update_perf_value(proc, cpu, (char *) key, value); |
1fc22eb4 JD |
271 | } |
272 | } | |
273 | ||
274 | end: | |
275 | return; | |
276 | } | |
277 | ||
4adc8274 | 278 | void update_perf_counter(struct processtop *proc, const struct bt_ctf_event *event) |
1fc22eb4 | 279 | { |
1fc22eb4 | 280 | struct cputime *cpu; |
3ba84bed | 281 | const struct definition *scope; |
1fc22eb4 | 282 | |
d67167cd | 283 | cpu = get_cpu(get_cpu_id(event)); |
1fc22eb4 JD |
284 | |
285 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT); | |
286 | extract_perf_counter_scope(event, scope, proc, cpu); | |
287 | ||
288 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT); | |
289 | extract_perf_counter_scope(event, scope, proc, cpu); | |
290 | ||
291 | scope = bt_ctf_get_top_level_scope(event, BT_EVENT_CONTEXT); | |
292 | extract_perf_counter_scope(event, scope, proc, cpu); | |
1fc22eb4 JD |
293 | } |
294 | ||
4adc8274 | 295 | enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data, |
1fc22eb4 JD |
296 | void *private_data) |
297 | { | |
298 | int pid, tid, ppid; | |
299 | char *comm; | |
300 | struct processtop *parent, *child; | |
1fc22eb4 JD |
301 | unsigned long timestamp; |
302 | ||
67a84e40 | 303 | timestamp = bt_ctf_get_timestamp(call_data); |
1fc22eb4 JD |
304 | if (timestamp == -1ULL) |
305 | goto error; | |
306 | ||
1dec520a JD |
307 | pid = get_context_pid(call_data); |
308 | if (pid == -1ULL) { | |
1fc22eb4 JD |
309 | goto error; |
310 | } | |
1dec520a JD |
311 | tid = get_context_tid(call_data); |
312 | if (tid == -1ULL) { | |
1fc22eb4 JD |
313 | goto error; |
314 | } | |
1dec520a JD |
315 | ppid = get_context_ppid(call_data); |
316 | if (ppid == -1ULL) { | |
1fc22eb4 JD |
317 | goto error; |
318 | } | |
1dec520a JD |
319 | comm = get_context_comm(call_data); |
320 | if (!comm) { | |
1fc22eb4 JD |
321 | goto error; |
322 | } | |
323 | ||
324 | /* find or create the current process */ | |
325 | child = find_process_tid(<tngtop, tid, comm); | |
326 | if (!child) | |
327 | child = add_proc(<tngtop, tid, comm, timestamp); | |
328 | update_proc(child, pid, tid, ppid, comm); | |
329 | ||
330 | if (pid != tid) { | |
331 | /* find or create the parent */ | |
332 | parent = find_process_tid(<tngtop, pid, comm); | |
333 | if (!parent) { | |
334 | parent = add_proc(<tngtop, pid, comm, timestamp); | |
335 | parent->pid = pid; | |
336 | } | |
337 | ||
338 | /* attach the parent to the current process */ | |
339 | child->threadparent = parent; | |
340 | add_thread(parent, child); | |
341 | } | |
342 | ||
343 | update_perf_counter(child, call_data); | |
344 | ||
345 | return BT_CB_OK; | |
346 | ||
347 | error: | |
348 | return BT_CB_ERROR_STOP; | |
349 | } | |
350 | ||
351 | void init_lttngtop() | |
352 | { | |
353 | copies = g_ptr_array_new(); | |
0d91c12a | 354 | global_perf_liszt = g_hash_table_new(g_str_hash, g_str_equal); |
1fc22eb4 JD |
355 | |
356 | sem_init(&goodtodisplay, 0, 0); | |
357 | sem_init(&goodtoupdate, 0, 1); | |
358 | sem_init(&timer, 0, 1); | |
359 | sem_init(&bootstrap, 0, 0); | |
360 | sem_init(&pause_sem, 0, 1); | |
361 | sem_init(&end_trace_sem, 0, 0); | |
362 | ||
e05a35a6 JD |
363 | reset_global_counters(); |
364 | lttngtop.nbproc = 0; | |
365 | lttngtop.nbthreads = 0; | |
366 | lttngtop.nbfiles = 0; | |
367 | ||
5db6fc65 JD |
368 | lttngtop.process_hash_table = g_hash_table_new(g_direct_hash, |
369 | g_direct_equal); | |
1fc22eb4 JD |
370 | lttngtop.process_table = g_ptr_array_new(); |
371 | lttngtop.files_table = g_ptr_array_new(); | |
372 | lttngtop.cpu_table = g_ptr_array_new(); | |
373 | } | |
374 | ||
c263c4eb | 375 | void usage(FILE *fp) |
1fc22eb4 | 376 | { |
c263c4eb JD |
377 | fprintf(fp, "LTTngTop %s\n\n", VERSION); |
378 | fprintf(fp, "Usage : lttngtop /path/to/trace\n"); | |
1fc22eb4 JD |
379 | } |
380 | ||
381 | /* | |
382 | * Return 0 if caller should continue, < 0 if caller should return | |
383 | * error, > 0 if caller should exit without reporting error. | |
384 | */ | |
385 | static int parse_options(int argc, char **argv) | |
386 | { | |
387 | poptContext pc; | |
388 | int opt, ret = 0; | |
389 | ||
1fc22eb4 JD |
390 | pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0); |
391 | poptReadDefaultConfig(pc, 0); | |
392 | ||
393 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
394 | switch (opt) { | |
395 | case OPT_HELP: | |
396 | usage(stdout); | |
397 | ret = 1; /* exit cleanly */ | |
398 | goto end; | |
84d2a515 JD |
399 | case OPT_TEXTDUMP: |
400 | opt_textdump = 1; | |
401 | goto end; | |
1fc22eb4 JD |
402 | default: |
403 | ret = -EINVAL; | |
404 | goto end; | |
405 | } | |
406 | } | |
407 | ||
408 | opt_input_path = poptGetArg(pc); | |
172f5d66 | 409 | |
1fc22eb4 JD |
410 | end: |
411 | if (pc) { | |
412 | poptFreeContext(pc); | |
413 | } | |
414 | return ret; | |
415 | } | |
416 | ||
417 | void iter_trace(struct bt_context *bt_ctx) | |
418 | { | |
419 | struct bt_ctf_iter *iter; | |
420 | struct bt_iter_pos begin_pos; | |
4adc8274 | 421 | const struct bt_ctf_event *event; |
1fc22eb4 JD |
422 | int ret = 0; |
423 | ||
424 | begin_pos.type = BT_SEEK_BEGIN; | |
425 | iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL); | |
426 | ||
84d2a515 JD |
427 | if (opt_textdump) { |
428 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
429 | print_timestamp, | |
430 | NULL, NULL, NULL); | |
431 | } else { | |
432 | /* at each event check if we need to refresh */ | |
433 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
434 | check_timestamp, | |
435 | NULL, NULL, NULL); | |
436 | /* at each event, verify the status of the process table */ | |
437 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
438 | fix_process_table, | |
439 | NULL, NULL, NULL); | |
440 | /* to handle the scheduling events */ | |
441 | bt_ctf_iter_add_callback(iter, | |
442 | g_quark_from_static_string("sched_switch"), | |
443 | NULL, 0, handle_sched_switch, NULL, NULL, NULL); | |
444 | /* to clean up the process table */ | |
445 | bt_ctf_iter_add_callback(iter, | |
446 | g_quark_from_static_string("sched_process_free"), | |
447 | NULL, 0, handle_sched_process_free, NULL, NULL, NULL); | |
448 | /* to get all the process from the statedumps */ | |
449 | bt_ctf_iter_add_callback(iter, | |
450 | g_quark_from_static_string( | |
451 | "lttng_statedump_process_state"), | |
452 | NULL, 0, handle_statedump_process_state, | |
453 | NULL, NULL, NULL); | |
454 | ||
455 | /* for IO top */ | |
456 | bt_ctf_iter_add_callback(iter, | |
457 | g_quark_from_static_string("exit_syscall"), | |
458 | NULL, 0, handle_exit_syscall, NULL, NULL, NULL); | |
459 | bt_ctf_iter_add_callback(iter, | |
460 | g_quark_from_static_string("sys_write"), | |
461 | NULL, 0, handle_sys_write, NULL, NULL, NULL); | |
462 | bt_ctf_iter_add_callback(iter, | |
463 | g_quark_from_static_string("sys_read"), | |
464 | NULL, 0, handle_sys_read, NULL, NULL, NULL); | |
465 | bt_ctf_iter_add_callback(iter, | |
466 | g_quark_from_static_string("sys_open"), | |
467 | NULL, 0, handle_sys_open, NULL, NULL, NULL); | |
468 | bt_ctf_iter_add_callback(iter, | |
469 | g_quark_from_static_string("sys_close"), | |
470 | NULL, 0, handle_sys_close, NULL, NULL, NULL); | |
471 | bt_ctf_iter_add_callback(iter, | |
472 | g_quark_from_static_string( | |
ceb3a221 | 473 | "lttng_statedump_file_descriptor"), |
84d2a515 JD |
474 | NULL, 0, handle_statedump_file_descriptor, |
475 | NULL, NULL, NULL); | |
476 | } | |
477 | ||
da4a3c1d JD |
478 | while (((event = bt_ctf_iter_read_event(iter)) != NULL)) { |
479 | if (quit) | |
480 | goto end_iter; | |
1fc22eb4 JD |
481 | ret = bt_iter_next(bt_ctf_get_iter(iter)); |
482 | if (ret < 0) | |
483 | goto end_iter; | |
484 | } | |
485 | ||
486 | /* block until quit, we reached the end of the trace */ | |
487 | sem_wait(&end_trace_sem); | |
488 | ||
489 | end_iter: | |
06570214 | 490 | bt_ctf_iter_destroy(iter); |
1fc22eb4 JD |
491 | } |
492 | ||
493 | /* | |
494 | * bt_context_add_traces_recursive: Open a trace recursively | |
495 | * (copied from BSD code in converter/babeltrace.c) | |
496 | * | |
497 | * Find each trace present in the subdirectory starting from the given | |
498 | * path, and add them to the context. The packet_seek parameter can be | |
499 | * NULL: this specify to use the default format packet_seek. | |
500 | * | |
501 | * Return: 0 on success, nonzero on failure. | |
502 | * Unable to open toplevel: failure. | |
503 | * Unable to open some subdirectory or file: warn and continue; | |
504 | */ | |
505 | int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path, | |
506 | const char *format_str, | |
507 | void (*packet_seek)(struct stream_pos *pos, | |
508 | size_t offset, int whence)) | |
509 | { | |
510 | FTS *tree; | |
511 | FTSENT *node; | |
512 | GArray *trace_ids; | |
513 | char lpath[PATH_MAX]; | |
514 | char * const paths[2] = { lpath, NULL }; | |
0d567cf1 | 515 | int ret = -1; |
1fc22eb4 JD |
516 | |
517 | /* | |
518 | * Need to copy path, because fts_open can change it. | |
519 | * It is the pointer array, not the strings, that are constant. | |
520 | */ | |
521 | strncpy(lpath, path, PATH_MAX); | |
522 | lpath[PATH_MAX - 1] = '\0'; | |
523 | ||
524 | tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0); | |
525 | if (tree == NULL) { | |
526 | fprintf(stderr, "[error] [Context] Cannot traverse \"%s\" for reading.\n", | |
527 | path); | |
528 | return -EINVAL; | |
529 | } | |
530 | ||
531 | trace_ids = g_array_new(FALSE, TRUE, sizeof(int)); | |
532 | ||
533 | while ((node = fts_read(tree))) { | |
534 | int dirfd, metafd; | |
535 | ||
536 | if (!(node->fts_info & FTS_D)) | |
537 | continue; | |
538 | ||
539 | dirfd = open(node->fts_accpath, 0); | |
540 | if (dirfd < 0) { | |
541 | fprintf(stderr, "[error] [Context] Unable to open trace " | |
542 | "directory file descriptor.\n"); | |
543 | ret = dirfd; | |
544 | goto error; | |
545 | } | |
546 | metafd = openat(dirfd, "metadata", O_RDONLY); | |
547 | if (metafd < 0) { | |
7314c855 JD |
548 | close(dirfd); |
549 | ret = -1; | |
550 | continue; | |
1fc22eb4 JD |
551 | } else { |
552 | int trace_id; | |
553 | ||
554 | ret = close(metafd); | |
555 | if (ret < 0) { | |
556 | perror("close"); | |
557 | goto error; | |
558 | } | |
559 | ret = close(dirfd); | |
560 | if (ret < 0) { | |
561 | perror("close"); | |
562 | goto error; | |
563 | } | |
564 | ||
565 | trace_id = bt_context_add_trace(ctx, | |
566 | node->fts_accpath, format_str, | |
567 | packet_seek, NULL, NULL); | |
568 | if (trace_id < 0) { | |
0d567cf1 | 569 | fprintf(stderr, "[warning] [Context] opening trace \"%s\" from %s " |
1fc22eb4 | 570 | "for reading.\n", node->fts_accpath, path); |
0d567cf1 JD |
571 | /* Allow to skip erroneous traces. */ |
572 | continue; | |
1fc22eb4 JD |
573 | } |
574 | g_array_append_val(trace_ids, trace_id); | |
575 | } | |
576 | } | |
577 | ||
578 | g_array_free(trace_ids, TRUE); | |
0d567cf1 | 579 | return ret; |
1fc22eb4 JD |
580 | |
581 | error: | |
582 | return ret; | |
583 | } | |
584 | ||
4553b4d1 | 585 | static int check_field_requirements(const struct bt_ctf_field_decl *const * field_list, |
a54d0d2c JD |
586 | int field_cnt, int *tid_check, int *pid_check, |
587 | int *procname_check, int *ppid_check) | |
588 | { | |
589 | int j; | |
bb6d72a2 JD |
590 | struct perfcounter *global; |
591 | const char *name; | |
a54d0d2c JD |
592 | |
593 | for (j = 0; j < field_cnt; j++) { | |
bb6d72a2 | 594 | name = bt_ctf_get_decl_field_name(field_list[j]); |
a54d0d2c | 595 | if (*tid_check == 0) { |
bb6d72a2 | 596 | if (strncmp(name, "tid", 3) == 0) |
a54d0d2c | 597 | (*tid_check)++; |
a54d0d2c JD |
598 | } |
599 | if (*pid_check == 0) { | |
bb6d72a2 | 600 | if (strncmp(name, "tid", 3) == 0) |
a54d0d2c JD |
601 | (*pid_check)++; |
602 | } | |
603 | if (*ppid_check == 0) { | |
bb6d72a2 | 604 | if (strncmp(name, "ppid", 4) == 0) |
a54d0d2c JD |
605 | (*ppid_check)++; |
606 | } | |
607 | if (*procname_check == 0) { | |
bb6d72a2 | 608 | if (strncmp(name, "procname", 8) == 0) |
a54d0d2c JD |
609 | (*procname_check)++; |
610 | } | |
bb6d72a2 JD |
611 | if (strncmp(name, "perf_", 5) == 0) { |
612 | global = g_hash_table_lookup(global_perf_liszt, (gpointer) name); | |
613 | if (!global) { | |
614 | global = g_new0(struct perfcounter, 1); | |
615 | /* by default, sort on the first perf context */ | |
616 | if (g_hash_table_size(global_perf_liszt) == 0) | |
617 | global->sort = 1; | |
618 | global->visible = 1; | |
619 | g_hash_table_insert(global_perf_liszt, (gpointer) strdup(name), global); | |
620 | } | |
621 | } | |
a54d0d2c | 622 | } |
bb6d72a2 | 623 | |
a54d0d2c JD |
624 | if (*tid_check == 1 && *pid_check == 1 && *ppid_check == 1 && |
625 | *procname_check == 1) | |
626 | return 0; | |
627 | ||
628 | return -1; | |
629 | } | |
630 | ||
631 | /* | |
632 | * check_requirements: check if the required context informations are available | |
633 | * | |
634 | * If each mandatory context information is available for at least in one | |
635 | * event, return 0 otherwise return -1. | |
a54d0d2c JD |
636 | */ |
637 | int check_requirements(struct bt_context *ctx) | |
638 | { | |
639 | unsigned int i, evt_cnt, field_cnt; | |
640 | struct bt_ctf_event_decl *const * evt_list; | |
641 | const struct bt_ctf_field_decl *const * field_list; | |
642 | int tid_check = 0; | |
643 | int pid_check = 0; | |
644 | int procname_check = 0; | |
645 | int ppid_check = 0; | |
646 | int ret = 0; | |
647 | ||
648 | bt_ctf_get_event_decl_list(0, ctx, &evt_list, &evt_cnt); | |
649 | for (i = 0; i < evt_cnt; i++) { | |
650 | bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_EVENT_CONTEXT, | |
651 | &field_list, &field_cnt); | |
652 | ret = check_field_requirements(field_list, field_cnt, | |
653 | &tid_check, &pid_check, &procname_check, | |
654 | &ppid_check); | |
a54d0d2c JD |
655 | |
656 | bt_ctf_get_decl_fields(evt_list[i], BT_EVENT_CONTEXT, | |
657 | &field_list, &field_cnt); | |
658 | ret = check_field_requirements(field_list, field_cnt, | |
659 | &tid_check, &pid_check, &procname_check, | |
660 | &ppid_check); | |
a54d0d2c JD |
661 | |
662 | bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_PACKET_CONTEXT, | |
663 | &field_list, &field_cnt); | |
664 | ret = check_field_requirements(field_list, field_cnt, | |
665 | &tid_check, &pid_check, &procname_check, | |
666 | &ppid_check); | |
a54d0d2c JD |
667 | } |
668 | ||
669 | if (tid_check == 0) { | |
670 | ret = -1; | |
671 | fprintf(stderr, "[error] missing tid context information\n"); | |
672 | } | |
673 | if (pid_check == 0) { | |
674 | ret = -1; | |
675 | fprintf(stderr, "[error] missing pid context information\n"); | |
676 | } | |
677 | if (ppid_check == 0) { | |
678 | ret = -1; | |
679 | fprintf(stderr, "[error] missing ppid context information\n"); | |
680 | } | |
681 | if (procname_check == 0) { | |
682 | ret = -1; | |
683 | fprintf(stderr, "[error] missing procname context information\n"); | |
684 | } | |
685 | ||
a54d0d2c JD |
686 | return ret; |
687 | } | |
688 | ||
172f5d66 JD |
689 | ssize_t read_subbuffer(struct lttng_consumer_stream *kconsumerd_fd, |
690 | struct lttng_consumer_local_data *ctx) | |
691 | { | |
692 | unsigned long len; | |
693 | int err; | |
694 | long ret = 0; | |
695 | int infd = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd); | |
696 | ||
697 | if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_SPLICE) { | |
698 | /* Get the next subbuffer */ | |
172f5d66 JD |
699 | err = helper_kernctl_get_next_subbuf(infd); |
700 | if (err != 0) { | |
701 | ret = errno; | |
702 | perror("Reserving sub buffer failed (everything is normal, " | |
703 | "it is due to concurrency)"); | |
704 | goto end; | |
705 | } | |
706 | /* read the whole subbuffer */ | |
707 | err = helper_kernctl_get_padded_subbuf_size(infd, &len); | |
708 | if (err != 0) { | |
709 | ret = errno; | |
710 | perror("Getting sub-buffer len failed."); | |
711 | goto end; | |
712 | } | |
172f5d66 JD |
713 | |
714 | /* splice the subbuffer to the tracefile */ | |
715 | ret = helper_lttng_consumer_on_read_subbuffer_splice(ctx, kconsumerd_fd, len); | |
716 | if (ret < 0) { | |
717 | /* | |
718 | * display the error but continue processing to try | |
719 | * to release the subbuffer | |
720 | */ | |
721 | fprintf(stderr,"Error splicing to tracefile\n"); | |
722 | } | |
172f5d66 JD |
723 | err = helper_kernctl_put_next_subbuf(infd); |
724 | if (err != 0) { | |
725 | ret = errno; | |
726 | perror("Reserving sub buffer failed (everything is normal, " | |
727 | "it is due to concurrency)"); | |
728 | goto end; | |
729 | } | |
0865cf6b | 730 | sem_post(&metadata_available); |
172f5d66 JD |
731 | } |
732 | ||
733 | end: | |
734 | return 0; | |
735 | } | |
736 | ||
737 | int on_update_fd(int key, uint32_t state) | |
738 | { | |
739 | /* let the lib handle the metadata FD */ | |
740 | if (key == sessiond_metadata) | |
741 | return 0; | |
742 | return 1; | |
743 | } | |
744 | ||
745 | int on_recv_fd(struct lttng_consumer_stream *kconsumerd_fd) | |
746 | { | |
747 | int ret; | |
dbb34d88 | 748 | struct mmap_stream *new_mmap_stream; |
172f5d66 | 749 | |
172f5d66 JD |
750 | /* Opening the tracefile in write mode */ |
751 | if (helper_get_lttng_consumer_stream_path_name(kconsumerd_fd) != NULL) { | |
752 | ret = open(helper_get_lttng_consumer_stream_path_name(kconsumerd_fd), | |
753 | O_WRONLY|O_CREAT|O_TRUNC, S_IRWXU|S_IRWXG|S_IRWXO); | |
754 | if (ret < 0) { | |
755 | perror("open"); | |
756 | goto end; | |
757 | } | |
758 | helper_set_lttng_consumer_stream_out_fd(kconsumerd_fd, ret); | |
759 | } | |
760 | ||
761 | if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_MMAP) { | |
dbb34d88 JD |
762 | new_mmap_stream = malloc(sizeof(struct mmap_stream)); |
763 | new_mmap_stream->fd = helper_get_lttng_consumer_stream_wait_fd( | |
764 | kconsumerd_fd); | |
765 | bt_list_add(&new_mmap_stream->list, &mmap_list.head); | |
172f5d66 JD |
766 | |
767 | g_ptr_array_add(lttng_consumer_stream_array, kconsumerd_fd); | |
c1e6815a JD |
768 | /* keep mmap FDs internally */ |
769 | ret = 1; | |
172f5d66 JD |
770 | } else { |
771 | consumerd_metadata = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd); | |
772 | sessiond_metadata = helper_get_lttng_consumer_stream_key(kconsumerd_fd); | |
773 | ret = 0; | |
774 | } | |
775 | ||
776 | end: | |
777 | return ret; | |
778 | } | |
779 | ||
a440e379 | 780 | void live_consume(struct bt_context **bt_ctx) |
346f2b4c | 781 | { |
346f2b4c JD |
782 | int ret; |
783 | ||
f03aeb2f | 784 | if (!metadata_ready) { |
f03aeb2f | 785 | sem_wait(&metadata_available); |
a440e379 | 786 | if (access("/tmp/livesession/kernel/metadata", F_OK) != 0) { |
dbb34d88 | 787 | fprintf(stderr,"no metadata\n"); |
a440e379 | 788 | goto end; |
67a84e40 | 789 | } |
f03aeb2f | 790 | metadata_ready = 1; |
a440e379 | 791 | metadata_fp = fopen("/tmp/livesession/kernel/metadata", "r"); |
f03aeb2f | 792 | } |
67a84e40 | 793 | |
f03aeb2f | 794 | if (!trace_opened) { |
a440e379 JD |
795 | *bt_ctx = bt_context_create(); |
796 | ret = bt_context_add_trace(*bt_ctx, NULL, "ctf", | |
f03aeb2f JD |
797 | lttngtop_ctf_packet_seek, &mmap_list, metadata_fp); |
798 | if (ret < 0) { | |
799 | printf("Error adding trace\n"); | |
a440e379 | 800 | goto end; |
346f2b4c | 801 | } |
f03aeb2f | 802 | trace_opened = 1; |
346f2b4c | 803 | } |
dbb34d88 | 804 | |
a440e379 JD |
805 | end: |
806 | return; | |
346f2b4c | 807 | } |
172f5d66 JD |
808 | |
809 | int setup_consumer(char *command_sock_path, pthread_t *threads, | |
810 | struct lttng_consumer_local_data *ctx) | |
811 | { | |
812 | int ret = 0; | |
813 | ||
814 | ctx = helper_lttng_consumer_create(HELPER_LTTNG_CONSUMER_KERNEL, | |
815 | read_subbuffer, NULL, on_recv_fd, on_update_fd); | |
816 | if (!ctx) | |
817 | goto end; | |
818 | ||
819 | unlink(command_sock_path); | |
820 | helper_lttng_consumer_set_command_sock_path(ctx, command_sock_path); | |
821 | helper_lttng_consumer_init(); | |
822 | ||
823 | /* Create the thread to manage the receive of fd */ | |
824 | ret = pthread_create(&threads[0], NULL, helper_lttng_consumer_thread_receive_fds, | |
825 | (void *) ctx); | |
826 | if (ret != 0) { | |
67a84e40 | 827 | perror("pthread_create receive fd"); |
172f5d66 JD |
828 | goto end; |
829 | } | |
346f2b4c JD |
830 | /* Create thread to manage the polling/writing of traces */ |
831 | ret = pthread_create(&threads[1], NULL, helper_lttng_consumer_thread_poll_fds, | |
832 | (void *) ctx); | |
833 | if (ret != 0) { | |
67a84e40 | 834 | perror("pthread_create poll fd"); |
346f2b4c JD |
835 | goto end; |
836 | } | |
837 | ||
172f5d66 JD |
838 | end: |
839 | return ret; | |
840 | } | |
841 | ||
67a84e40 | 842 | void *setup_live_tracing() |
172f5d66 JD |
843 | { |
844 | struct lttng_domain dom; | |
845 | struct lttng_channel chan; | |
846 | char *channel_name = "mmapchan"; | |
172f5d66 JD |
847 | struct lttng_event ev; |
848 | int ret = 0; | |
849 | char *command_sock_path = "/tmp/consumerd_sock"; | |
850 | static pthread_t threads[2]; /* recv_fd, poll */ | |
851 | struct lttng_event_context kctxpid, kctxcomm, kctxppid, kctxtid; | |
172f5d66 JD |
852 | |
853 | struct lttng_handle *handle; | |
854 | ||
855 | BT_INIT_LIST_HEAD(&mmap_list.head); | |
856 | ||
857 | lttng_consumer_stream_array = g_ptr_array_new(); | |
858 | ||
859 | if ((ret = setup_consumer(command_sock_path, threads, ctx)) < 0) { | |
860 | fprintf(stderr,"error setting up consumer\n"); | |
861 | goto end; | |
862 | } | |
863 | ||
864 | available_snapshots = g_ptr_array_new(); | |
865 | ||
866 | /* setup the session */ | |
867 | dom.type = LTTNG_DOMAIN_KERNEL; | |
868 | ||
a440e379 | 869 | ret = unlink("/tmp/livesession"); |
172f5d66 | 870 | |
f03aeb2f | 871 | lttng_destroy_session("test"); |
172f5d66 JD |
872 | if ((ret = lttng_create_session("test", "/tmp/livesession")) < 0) { |
873 | fprintf(stderr,"error creating the session : %s\n", | |
874 | helper_lttcomm_get_readable_code(ret)); | |
875 | goto end; | |
876 | } | |
877 | ||
878 | if ((handle = lttng_create_handle("test", &dom)) == NULL) { | |
879 | fprintf(stderr,"error creating handle\n"); | |
880 | goto end; | |
881 | } | |
882 | ||
883 | if ((ret = lttng_register_consumer(handle, command_sock_path)) < 0) { | |
884 | fprintf(stderr,"error registering consumer : %s\n", | |
885 | helper_lttcomm_get_readable_code(ret)); | |
886 | goto end; | |
887 | } | |
888 | ||
889 | strcpy(chan.name, channel_name); | |
67a84e40 | 890 | chan.attr.overwrite = 0; |
84d2a515 JD |
891 | // chan.attr.subbuf_size = 32768; |
892 | chan.attr.subbuf_size = 1048576; /* 1MB */ | |
172f5d66 JD |
893 | chan.attr.num_subbuf = 4; |
894 | chan.attr.switch_timer_interval = 0; | |
895 | chan.attr.read_timer_interval = 200; | |
896 | chan.attr.output = LTTNG_EVENT_MMAP; | |
897 | ||
898 | if ((ret = lttng_enable_channel(handle, &chan)) < 0) { | |
154f4a27 JD |
899 | fprintf(stderr,"error creating channel : %s\n", |
900 | helper_lttcomm_get_readable_code(ret)); | |
172f5d66 JD |
901 | goto end; |
902 | } | |
903 | ||
154f4a27 JD |
904 | memset(&ev, '\0', sizeof(struct lttng_event)); |
905 | //sprintf(ev.name, "sched_switch"); | |
172f5d66 | 906 | ev.type = LTTNG_EVENT_TRACEPOINT; |
172f5d66 | 907 | if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) { |
154f4a27 JD |
908 | fprintf(stderr,"error enabling event : %s\n", |
909 | helper_lttcomm_get_readable_code(ret)); | |
172f5d66 JD |
910 | goto end; |
911 | } | |
912 | ||
84d2a515 JD |
913 | ev.type = LTTNG_EVENT_SYSCALL; |
914 | if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) { | |
915 | fprintf(stderr,"error enabling syscalls : %s\n", | |
916 | helper_lttcomm_get_readable_code(ret)); | |
917 | goto end; | |
918 | } | |
919 | ||
172f5d66 JD |
920 | kctxpid.ctx = LTTNG_EVENT_CONTEXT_PID; |
921 | lttng_add_context(handle, &kctxpid, NULL, NULL); | |
922 | kctxppid.ctx = LTTNG_EVENT_CONTEXT_PPID; | |
923 | lttng_add_context(handle, &kctxppid, NULL, NULL); | |
924 | kctxcomm.ctx = LTTNG_EVENT_CONTEXT_PROCNAME; | |
925 | lttng_add_context(handle, &kctxcomm, NULL, NULL); | |
926 | kctxtid.ctx = LTTNG_EVENT_CONTEXT_TID; | |
927 | lttng_add_context(handle, &kctxtid, NULL, NULL); | |
928 | ||
929 | if ((ret = lttng_start_tracing("test")) < 0) { | |
154f4a27 JD |
930 | fprintf(stderr,"error starting tracing : %s\n", |
931 | helper_lttcomm_get_readable_code(ret)); | |
172f5d66 JD |
932 | goto end; |
933 | } | |
934 | ||
935 | helper_kernctl_buffer_flush(consumerd_metadata); | |
346f2b4c | 936 | |
172f5d66 | 937 | /* block until metadata is ready */ |
0865cf6b | 938 | sem_init(&metadata_available, 0, 0); |
172f5d66 | 939 | |
172f5d66 | 940 | end: |
66bc340f | 941 | return NULL; |
172f5d66 JD |
942 | } |
943 | ||
1fc22eb4 JD |
944 | int main(int argc, char **argv) |
945 | { | |
946 | int ret; | |
947 | struct bt_context *bt_ctx = NULL; | |
948 | ||
949 | ret = parse_options(argc, argv); | |
950 | if (ret < 0) { | |
951 | fprintf(stdout, "Error parsing options.\n\n"); | |
952 | usage(stdout); | |
953 | exit(EXIT_FAILURE); | |
954 | } else if (ret > 0) { | |
955 | exit(EXIT_SUCCESS); | |
956 | } | |
957 | ||
172f5d66 | 958 | if (!opt_input_path) { |
84d2a515 JD |
959 | setup_live_tracing(); |
960 | init_lttngtop(); | |
961 | if (!opt_textdump) { | |
962 | pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL); | |
963 | pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL); | |
964 | } | |
a440e379 JD |
965 | live_consume(&bt_ctx); |
966 | iter_trace(bt_ctx); | |
967 | ||
da4a3c1d | 968 | pthread_join(timer_thread, NULL); |
a440e379 JD |
969 | quit = 1; |
970 | pthread_join(display_thread, NULL); | |
84d2a515 | 971 | |
67a84e40 | 972 | lttng_stop_tracing("test"); |
67a84e40 JD |
973 | lttng_destroy_session("test"); |
974 | ||
1fc22eb4 | 975 | goto end; |
172f5d66 JD |
976 | } else { |
977 | init_lttngtop(); | |
978 | ||
979 | bt_ctx = bt_context_create(); | |
980 | ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL); | |
981 | if (ret < 0) { | |
982 | fprintf(stderr, "[error] Opening the trace\n"); | |
983 | goto end; | |
984 | } | |
1fc22eb4 | 985 | |
172f5d66 JD |
986 | ret = check_requirements(bt_ctx); |
987 | if (ret < 0) { | |
988 | fprintf(stderr, "[error] some mandatory contexts were missing, exiting.\n"); | |
989 | goto end; | |
990 | } | |
991 | pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL); | |
992 | pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL); | |
1fc22eb4 | 993 | |
172f5d66 | 994 | iter_trace(bt_ctx); |
1fc22eb4 | 995 | |
172f5d66 | 996 | pthread_join(display_thread, NULL); |
da4a3c1d | 997 | quit = 1; |
172f5d66 JD |
998 | pthread_join(timer_thread, NULL); |
999 | } | |
1fc22eb4 JD |
1000 | |
1001 | end: | |
172f5d66 JD |
1002 | if (bt_ctx) |
1003 | bt_context_put(bt_ctx); | |
1004 | ||
1fc22eb4 JD |
1005 | return 0; |
1006 | } |