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; | |
6777529d | 54 | int opt_textdump; |
1fc22eb4 JD |
55 | |
56 | struct lttngtop *copy; | |
57 | pthread_t display_thread; | |
58 | pthread_t timer_thread; | |
59 | ||
60 | unsigned long refresh_display = 1 * NSEC_PER_SEC; | |
61 | unsigned long last_display_update = 0; | |
62 | int quit = 0; | |
63 | ||
16b22a0f JD |
64 | /* list of FDs available for being read with snapshots */ |
65 | struct mmap_stream_list mmap_list; | |
66 | GPtrArray *lttng_consumer_stream_array; | |
67 | int sessiond_metadata, consumerd_metadata; | |
4e6aeb3d JD |
68 | struct lttng_consumer_local_data *ctx = NULL; |
69 | /* list of snapshots currently not consumed */ | |
70 | GPtrArray *available_snapshots; | |
71 | sem_t metadata_available; | |
72 | FILE *metadata_fp; | |
73 | int trace_opened = 0; | |
74 | int metadata_ready = 0; | |
16b22a0f | 75 | |
1fc22eb4 JD |
76 | enum { |
77 | OPT_NONE = 0, | |
78 | OPT_HELP, | |
6777529d | 79 | OPT_TEXTDUMP, |
1fc22eb4 JD |
80 | }; |
81 | ||
82 | static struct poptOption long_options[] = { | |
83 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
84 | { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL }, | |
6777529d | 85 | { "textdump", 't', POPT_ARG_NONE, NULL, OPT_TEXTDUMP, NULL, NULL }, |
1fc22eb4 JD |
86 | { NULL, 0, 0, NULL, 0, NULL, NULL }, |
87 | }; | |
88 | ||
89 | void *refresh_thread(void *p) | |
90 | { | |
91 | while (1) { | |
85db4618 JD |
92 | if (quit) |
93 | return NULL; | |
1fc22eb4 JD |
94 | sem_wait(&pause_sem); |
95 | sem_post(&pause_sem); | |
96 | sem_post(&timer); | |
97 | sleep(refresh_display/NSEC_PER_SEC); | |
98 | } | |
99 | } | |
100 | ||
101 | void *ncurses_display(void *p) | |
102 | { | |
103 | unsigned int current_display_index = 0; | |
104 | ||
105 | sem_wait(&bootstrap); | |
b332d28f JD |
106 | /* |
107 | * Prevent the 1 second delay when we hit ESC | |
108 | */ | |
109 | ESCDELAY = 0; | |
1fc22eb4 JD |
110 | init_ncurses(); |
111 | ||
112 | while (1) { | |
113 | sem_wait(&timer); | |
114 | sem_wait(&goodtodisplay); | |
115 | sem_wait(&pause_sem); | |
116 | ||
117 | copy = g_ptr_array_index(copies, current_display_index); | |
85db4618 JD |
118 | assert(copy); |
119 | display(current_display_index++); | |
1fc22eb4 JD |
120 | |
121 | sem_post(&goodtoupdate); | |
122 | sem_post(&pause_sem); | |
123 | ||
124 | if (quit) { | |
125 | reset_ncurses(); | |
126 | pthread_exit(0); | |
127 | } | |
128 | } | |
129 | } | |
130 | ||
6112d0d4 JD |
131 | /* |
132 | * hook on each event to check the timestamp and refresh the display if | |
133 | * necessary | |
134 | */ | |
135 | enum bt_cb_ret print_timestamp(struct bt_ctf_event *call_data, void *private_data) | |
136 | { | |
137 | unsigned long timestamp; | |
138 | struct tm start; | |
b520ab45 | 139 | uint64_t ts_nsec_start; |
6112d0d4 JD |
140 | |
141 | ||
142 | timestamp = bt_ctf_get_timestamp(call_data); | |
143 | ||
b520ab45 | 144 | start = format_timestamp(timestamp); |
6112d0d4 JD |
145 | ts_nsec_start = timestamp % NSEC_PER_SEC; |
146 | ||
71c74ca6 JD |
147 | printf("%02d:%02d:%02d.%09" PRIu64 " %s\n", start.tm_hour, |
148 | start.tm_min, start.tm_sec, ts_nsec_start, | |
149 | bt_ctf_event_name(call_data)); | |
6112d0d4 JD |
150 | |
151 | return BT_CB_OK; | |
152 | } | |
153 | ||
1fc22eb4 JD |
154 | /* |
155 | * hook on each event to check the timestamp and refresh the display if | |
156 | * necessary | |
157 | */ | |
4adc8274 | 158 | enum bt_cb_ret check_timestamp(struct bt_ctf_event *call_data, void *private_data) |
1fc22eb4 JD |
159 | { |
160 | unsigned long timestamp; | |
161 | ||
c78f2cdc | 162 | timestamp = bt_ctf_get_timestamp(call_data); |
1fc22eb4 JD |
163 | if (timestamp == -1ULL) |
164 | goto error; | |
165 | ||
166 | if (last_display_update == 0) | |
167 | last_display_update = timestamp; | |
168 | ||
169 | if (timestamp - last_display_update >= refresh_display) { | |
170 | sem_wait(&goodtoupdate); | |
171 | g_ptr_array_add(copies, get_copy_lttngtop(last_display_update, | |
172 | timestamp)); | |
173 | sem_post(&goodtodisplay); | |
174 | sem_post(&bootstrap); | |
175 | last_display_update = timestamp; | |
176 | } | |
177 | return BT_CB_OK; | |
178 | ||
179 | error: | |
180 | fprintf(stderr, "check_timestamp callback error\n"); | |
181 | return BT_CB_ERROR_STOP; | |
182 | } | |
183 | ||
184 | /* | |
185 | * get_perf_counter : get or create and return a perf_counter struct for | |
186 | * either a process or a cpu (only one of the 2 parameters mandatory) | |
187 | */ | |
188 | struct perfcounter *get_perf_counter(const char *name, struct processtop *proc, | |
189 | struct cputime *cpu) | |
190 | { | |
bb6d72a2 | 191 | struct perfcounter *ret; |
1fc22eb4 JD |
192 | GHashTable *table; |
193 | ||
194 | if (proc) | |
195 | table = proc->perf; | |
196 | else if (cpu) | |
197 | table = cpu->perf; | |
198 | else | |
199 | goto error; | |
200 | ||
201 | ret = g_hash_table_lookup(table, (gpointer) name); | |
202 | if (ret) | |
203 | goto end; | |
204 | ||
559c9f86 | 205 | ret = g_new0(struct perfcounter, 1); |
1fc22eb4 JD |
206 | /* by default, make it visible in the UI */ |
207 | ret->visible = 1; | |
85db4618 | 208 | g_hash_table_insert(table, (gpointer) strdup(name), ret); |
1fc22eb4 | 209 | |
1fc22eb4 JD |
210 | end: |
211 | return ret; | |
212 | ||
213 | error: | |
214 | return NULL; | |
215 | } | |
216 | ||
217 | void update_perf_value(struct processtop *proc, struct cputime *cpu, | |
218 | const char *name, int value) | |
219 | { | |
220 | struct perfcounter *cpu_perf, *process_perf; | |
221 | ||
222 | cpu_perf = get_perf_counter(name, NULL, cpu); | |
223 | if (cpu_perf->count < value) { | |
224 | process_perf = get_perf_counter(name, proc, NULL); | |
225 | process_perf->count += value - cpu_perf->count; | |
226 | cpu_perf->count = value; | |
227 | } | |
228 | } | |
229 | ||
4adc8274 | 230 | void extract_perf_counter_scope(const struct bt_ctf_event *event, |
2e0a1190 | 231 | const struct bt_definition *scope, |
1fc22eb4 JD |
232 | struct processtop *proc, |
233 | struct cputime *cpu) | |
234 | { | |
2e0a1190 JD |
235 | struct bt_definition const * const *list = NULL; |
236 | const struct bt_definition *field; | |
1fc22eb4 | 237 | unsigned int count; |
bb6d72a2 JD |
238 | struct perfcounter *perfcounter; |
239 | GHashTableIter iter; | |
240 | gpointer key; | |
241 | int ret; | |
1fc22eb4 JD |
242 | |
243 | if (!scope) | |
244 | goto end; | |
245 | ||
246 | ret = bt_ctf_get_field_list(event, scope, &list, &count); | |
247 | if (ret < 0) | |
248 | goto end; | |
249 | ||
bb6d72a2 JD |
250 | if (count == 0) |
251 | goto end; | |
252 | ||
253 | g_hash_table_iter_init(&iter, global_perf_liszt); | |
254 | while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfcounter)) { | |
255 | field = bt_ctf_get_field(event, scope, (char *) key); | |
256 | if (field) { | |
257 | int value = bt_ctf_get_uint64(field); | |
1fc22eb4 JD |
258 | if (bt_ctf_field_get_error()) |
259 | continue; | |
bb6d72a2 | 260 | update_perf_value(proc, cpu, (char *) key, value); |
1fc22eb4 JD |
261 | } |
262 | } | |
263 | ||
264 | end: | |
265 | return; | |
266 | } | |
267 | ||
4adc8274 | 268 | void update_perf_counter(struct processtop *proc, const struct bt_ctf_event *event) |
1fc22eb4 | 269 | { |
1fc22eb4 | 270 | struct cputime *cpu; |
2e0a1190 | 271 | const struct bt_definition *scope; |
1fc22eb4 | 272 | |
d67167cd | 273 | cpu = get_cpu(get_cpu_id(event)); |
1fc22eb4 JD |
274 | |
275 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT); | |
276 | extract_perf_counter_scope(event, scope, proc, cpu); | |
277 | ||
278 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT); | |
279 | extract_perf_counter_scope(event, scope, proc, cpu); | |
280 | ||
281 | scope = bt_ctf_get_top_level_scope(event, BT_EVENT_CONTEXT); | |
282 | extract_perf_counter_scope(event, scope, proc, cpu); | |
1fc22eb4 JD |
283 | } |
284 | ||
4adc8274 | 285 | enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data, |
1fc22eb4 JD |
286 | void *private_data) |
287 | { | |
288 | int pid, tid, ppid; | |
289 | char *comm; | |
290 | struct processtop *parent, *child; | |
1fc22eb4 JD |
291 | unsigned long timestamp; |
292 | ||
c78f2cdc | 293 | timestamp = bt_ctf_get_timestamp(call_data); |
1fc22eb4 JD |
294 | if (timestamp == -1ULL) |
295 | goto error; | |
296 | ||
1dec520a JD |
297 | pid = get_context_pid(call_data); |
298 | if (pid == -1ULL) { | |
1fc22eb4 JD |
299 | goto error; |
300 | } | |
1dec520a JD |
301 | tid = get_context_tid(call_data); |
302 | if (tid == -1ULL) { | |
1fc22eb4 JD |
303 | goto error; |
304 | } | |
1dec520a JD |
305 | ppid = get_context_ppid(call_data); |
306 | if (ppid == -1ULL) { | |
1fc22eb4 JD |
307 | goto error; |
308 | } | |
1dec520a JD |
309 | comm = get_context_comm(call_data); |
310 | if (!comm) { | |
1fc22eb4 JD |
311 | goto error; |
312 | } | |
313 | ||
314 | /* find or create the current process */ | |
315 | child = find_process_tid(<tngtop, tid, comm); | |
316 | if (!child) | |
317 | child = add_proc(<tngtop, tid, comm, timestamp); | |
318 | update_proc(child, pid, tid, ppid, comm); | |
319 | ||
320 | if (pid != tid) { | |
321 | /* find or create the parent */ | |
322 | parent = find_process_tid(<tngtop, pid, comm); | |
323 | if (!parent) { | |
324 | parent = add_proc(<tngtop, pid, comm, timestamp); | |
325 | parent->pid = pid; | |
326 | } | |
327 | ||
328 | /* attach the parent to the current process */ | |
329 | child->threadparent = parent; | |
330 | add_thread(parent, child); | |
331 | } | |
332 | ||
333 | update_perf_counter(child, call_data); | |
334 | ||
335 | return BT_CB_OK; | |
336 | ||
337 | error: | |
338 | return BT_CB_ERROR_STOP; | |
339 | } | |
340 | ||
341 | void init_lttngtop() | |
342 | { | |
343 | copies = g_ptr_array_new(); | |
0d91c12a | 344 | global_perf_liszt = g_hash_table_new(g_str_hash, g_str_equal); |
1fc22eb4 JD |
345 | |
346 | sem_init(&goodtodisplay, 0, 0); | |
347 | sem_init(&goodtoupdate, 0, 1); | |
348 | sem_init(&timer, 0, 1); | |
349 | sem_init(&bootstrap, 0, 0); | |
350 | sem_init(&pause_sem, 0, 1); | |
351 | sem_init(&end_trace_sem, 0, 0); | |
352 | ||
e05a35a6 JD |
353 | reset_global_counters(); |
354 | lttngtop.nbproc = 0; | |
355 | lttngtop.nbthreads = 0; | |
356 | lttngtop.nbfiles = 0; | |
357 | ||
1fc22eb4 JD |
358 | lttngtop.process_table = g_ptr_array_new(); |
359 | lttngtop.files_table = g_ptr_array_new(); | |
360 | lttngtop.cpu_table = g_ptr_array_new(); | |
361 | } | |
362 | ||
c263c4eb | 363 | void usage(FILE *fp) |
1fc22eb4 | 364 | { |
c263c4eb JD |
365 | fprintf(fp, "LTTngTop %s\n\n", VERSION); |
366 | fprintf(fp, "Usage : lttngtop /path/to/trace\n"); | |
1fc22eb4 JD |
367 | } |
368 | ||
369 | /* | |
370 | * Return 0 if caller should continue, < 0 if caller should return | |
371 | * error, > 0 if caller should exit without reporting error. | |
372 | */ | |
373 | static int parse_options(int argc, char **argv) | |
374 | { | |
375 | poptContext pc; | |
376 | int opt, ret = 0; | |
377 | ||
1fc22eb4 JD |
378 | pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0); |
379 | poptReadDefaultConfig(pc, 0); | |
380 | ||
381 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
382 | switch (opt) { | |
383 | case OPT_HELP: | |
384 | usage(stdout); | |
385 | ret = 1; /* exit cleanly */ | |
386 | goto end; | |
6777529d JD |
387 | case OPT_TEXTDUMP: |
388 | opt_textdump = 1; | |
389 | goto end; | |
1fc22eb4 JD |
390 | default: |
391 | ret = -EINVAL; | |
392 | goto end; | |
393 | } | |
394 | } | |
395 | ||
396 | opt_input_path = poptGetArg(pc); | |
16b22a0f | 397 | |
1fc22eb4 JD |
398 | end: |
399 | if (pc) { | |
400 | poptFreeContext(pc); | |
401 | } | |
402 | return ret; | |
403 | } | |
404 | ||
405 | void iter_trace(struct bt_context *bt_ctx) | |
406 | { | |
407 | struct bt_ctf_iter *iter; | |
408 | struct bt_iter_pos begin_pos; | |
4adc8274 | 409 | const struct bt_ctf_event *event; |
1fc22eb4 JD |
410 | int ret = 0; |
411 | ||
412 | begin_pos.type = BT_SEEK_BEGIN; | |
413 | iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL); | |
414 | ||
6777529d JD |
415 | if (opt_textdump) { |
416 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
417 | print_timestamp, | |
418 | NULL, NULL, NULL); | |
419 | } else { | |
420 | /* at each event check if we need to refresh */ | |
421 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
422 | check_timestamp, | |
423 | NULL, NULL, NULL); | |
424 | /* at each event, verify the status of the process table */ | |
425 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
426 | fix_process_table, | |
427 | NULL, NULL, NULL); | |
428 | /* to handle the scheduling events */ | |
429 | bt_ctf_iter_add_callback(iter, | |
430 | g_quark_from_static_string("sched_switch"), | |
431 | NULL, 0, handle_sched_switch, NULL, NULL, NULL); | |
432 | /* to clean up the process table */ | |
433 | bt_ctf_iter_add_callback(iter, | |
434 | g_quark_from_static_string("sched_process_free"), | |
435 | NULL, 0, handle_sched_process_free, NULL, NULL, NULL); | |
436 | /* to get all the process from the statedumps */ | |
437 | bt_ctf_iter_add_callback(iter, | |
438 | g_quark_from_static_string( | |
439 | "lttng_statedump_process_state"), | |
440 | NULL, 0, handle_statedump_process_state, | |
441 | NULL, NULL, NULL); | |
442 | ||
443 | /* for IO top */ | |
444 | bt_ctf_iter_add_callback(iter, | |
445 | g_quark_from_static_string("exit_syscall"), | |
446 | NULL, 0, handle_exit_syscall, NULL, NULL, NULL); | |
447 | bt_ctf_iter_add_callback(iter, | |
448 | g_quark_from_static_string("sys_write"), | |
449 | NULL, 0, handle_sys_write, NULL, NULL, NULL); | |
450 | bt_ctf_iter_add_callback(iter, | |
451 | g_quark_from_static_string("sys_read"), | |
452 | NULL, 0, handle_sys_read, NULL, NULL, NULL); | |
453 | bt_ctf_iter_add_callback(iter, | |
454 | g_quark_from_static_string("sys_open"), | |
455 | NULL, 0, handle_sys_open, NULL, NULL, NULL); | |
456 | bt_ctf_iter_add_callback(iter, | |
457 | g_quark_from_static_string("sys_close"), | |
458 | NULL, 0, handle_sys_close, NULL, NULL, NULL); | |
459 | bt_ctf_iter_add_callback(iter, | |
460 | g_quark_from_static_string( | |
ceb3a221 | 461 | "lttng_statedump_file_descriptor"), |
6777529d JD |
462 | NULL, 0, handle_statedump_file_descriptor, |
463 | NULL, NULL, NULL); | |
464 | } | |
465 | ||
1fc22eb4 JD |
466 | while ((event = bt_ctf_iter_read_event(iter)) != NULL) { |
467 | ret = bt_iter_next(bt_ctf_get_iter(iter)); | |
468 | if (ret < 0) | |
469 | goto end_iter; | |
470 | } | |
471 | ||
472 | /* block until quit, we reached the end of the trace */ | |
473 | sem_wait(&end_trace_sem); | |
474 | ||
475 | end_iter: | |
06570214 | 476 | bt_ctf_iter_destroy(iter); |
1fc22eb4 JD |
477 | } |
478 | ||
479 | /* | |
480 | * bt_context_add_traces_recursive: Open a trace recursively | |
481 | * (copied from BSD code in converter/babeltrace.c) | |
482 | * | |
483 | * Find each trace present in the subdirectory starting from the given | |
484 | * path, and add them to the context. The packet_seek parameter can be | |
485 | * NULL: this specify to use the default format packet_seek. | |
486 | * | |
487 | * Return: 0 on success, nonzero on failure. | |
488 | * Unable to open toplevel: failure. | |
489 | * Unable to open some subdirectory or file: warn and continue; | |
490 | */ | |
491 | int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path, | |
492 | const char *format_str, | |
2e0a1190 | 493 | void (*packet_seek)(struct bt_stream_pos *pos, |
1fc22eb4 JD |
494 | size_t offset, int whence)) |
495 | { | |
496 | FTS *tree; | |
497 | FTSENT *node; | |
498 | GArray *trace_ids; | |
499 | char lpath[PATH_MAX]; | |
500 | char * const paths[2] = { lpath, NULL }; | |
0d567cf1 | 501 | int ret = -1; |
1fc22eb4 JD |
502 | |
503 | /* | |
504 | * Need to copy path, because fts_open can change it. | |
505 | * It is the pointer array, not the strings, that are constant. | |
506 | */ | |
507 | strncpy(lpath, path, PATH_MAX); | |
508 | lpath[PATH_MAX - 1] = '\0'; | |
509 | ||
510 | tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0); | |
511 | if (tree == NULL) { | |
512 | fprintf(stderr, "[error] [Context] Cannot traverse \"%s\" for reading.\n", | |
513 | path); | |
514 | return -EINVAL; | |
515 | } | |
516 | ||
517 | trace_ids = g_array_new(FALSE, TRUE, sizeof(int)); | |
518 | ||
519 | while ((node = fts_read(tree))) { | |
520 | int dirfd, metafd; | |
521 | ||
522 | if (!(node->fts_info & FTS_D)) | |
523 | continue; | |
524 | ||
525 | dirfd = open(node->fts_accpath, 0); | |
526 | if (dirfd < 0) { | |
527 | fprintf(stderr, "[error] [Context] Unable to open trace " | |
528 | "directory file descriptor.\n"); | |
529 | ret = dirfd; | |
530 | goto error; | |
531 | } | |
532 | metafd = openat(dirfd, "metadata", O_RDONLY); | |
533 | if (metafd < 0) { | |
7314c855 JD |
534 | close(dirfd); |
535 | ret = -1; | |
536 | continue; | |
1fc22eb4 JD |
537 | } else { |
538 | int trace_id; | |
539 | ||
540 | ret = close(metafd); | |
541 | if (ret < 0) { | |
542 | perror("close"); | |
543 | goto error; | |
544 | } | |
545 | ret = close(dirfd); | |
546 | if (ret < 0) { | |
547 | perror("close"); | |
548 | goto error; | |
549 | } | |
550 | ||
551 | trace_id = bt_context_add_trace(ctx, | |
552 | node->fts_accpath, format_str, | |
553 | packet_seek, NULL, NULL); | |
554 | if (trace_id < 0) { | |
0d567cf1 | 555 | fprintf(stderr, "[warning] [Context] opening trace \"%s\" from %s " |
1fc22eb4 | 556 | "for reading.\n", node->fts_accpath, path); |
0d567cf1 JD |
557 | /* Allow to skip erroneous traces. */ |
558 | continue; | |
1fc22eb4 JD |
559 | } |
560 | g_array_append_val(trace_ids, trace_id); | |
561 | } | |
562 | } | |
563 | ||
564 | g_array_free(trace_ids, TRUE); | |
0d567cf1 | 565 | return ret; |
1fc22eb4 JD |
566 | |
567 | error: | |
568 | return ret; | |
569 | } | |
570 | ||
4553b4d1 | 571 | static int check_field_requirements(const struct bt_ctf_field_decl *const * field_list, |
a54d0d2c JD |
572 | int field_cnt, int *tid_check, int *pid_check, |
573 | int *procname_check, int *ppid_check) | |
574 | { | |
575 | int j; | |
bb6d72a2 JD |
576 | struct perfcounter *global; |
577 | const char *name; | |
a54d0d2c JD |
578 | |
579 | for (j = 0; j < field_cnt; j++) { | |
bb6d72a2 | 580 | name = bt_ctf_get_decl_field_name(field_list[j]); |
a54d0d2c | 581 | if (*tid_check == 0) { |
bb6d72a2 | 582 | if (strncmp(name, "tid", 3) == 0) |
a54d0d2c | 583 | (*tid_check)++; |
a54d0d2c JD |
584 | } |
585 | if (*pid_check == 0) { | |
da401e9c | 586 | if (strncmp(name, "pid", 3) == 0) |
a54d0d2c JD |
587 | (*pid_check)++; |
588 | } | |
589 | if (*ppid_check == 0) { | |
bb6d72a2 | 590 | if (strncmp(name, "ppid", 4) == 0) |
a54d0d2c JD |
591 | (*ppid_check)++; |
592 | } | |
593 | if (*procname_check == 0) { | |
bb6d72a2 | 594 | if (strncmp(name, "procname", 8) == 0) |
a54d0d2c JD |
595 | (*procname_check)++; |
596 | } | |
bb6d72a2 JD |
597 | if (strncmp(name, "perf_", 5) == 0) { |
598 | global = g_hash_table_lookup(global_perf_liszt, (gpointer) name); | |
599 | if (!global) { | |
600 | global = g_new0(struct perfcounter, 1); | |
601 | /* by default, sort on the first perf context */ | |
602 | if (g_hash_table_size(global_perf_liszt) == 0) | |
603 | global->sort = 1; | |
604 | global->visible = 1; | |
605 | g_hash_table_insert(global_perf_liszt, (gpointer) strdup(name), global); | |
606 | } | |
607 | } | |
a54d0d2c | 608 | } |
bb6d72a2 | 609 | |
a54d0d2c JD |
610 | if (*tid_check == 1 && *pid_check == 1 && *ppid_check == 1 && |
611 | *procname_check == 1) | |
612 | return 0; | |
613 | ||
614 | return -1; | |
615 | } | |
616 | ||
617 | /* | |
618 | * check_requirements: check if the required context informations are available | |
619 | * | |
620 | * If each mandatory context information is available for at least in one | |
621 | * event, return 0 otherwise return -1. | |
a54d0d2c JD |
622 | */ |
623 | int check_requirements(struct bt_context *ctx) | |
624 | { | |
625 | unsigned int i, evt_cnt, field_cnt; | |
626 | struct bt_ctf_event_decl *const * evt_list; | |
627 | const struct bt_ctf_field_decl *const * field_list; | |
628 | int tid_check = 0; | |
629 | int pid_check = 0; | |
630 | int procname_check = 0; | |
631 | int ppid_check = 0; | |
632 | int ret = 0; | |
633 | ||
634 | bt_ctf_get_event_decl_list(0, ctx, &evt_list, &evt_cnt); | |
635 | for (i = 0; i < evt_cnt; i++) { | |
636 | bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_EVENT_CONTEXT, | |
637 | &field_list, &field_cnt); | |
638 | ret = check_field_requirements(field_list, field_cnt, | |
639 | &tid_check, &pid_check, &procname_check, | |
640 | &ppid_check); | |
a54d0d2c JD |
641 | |
642 | bt_ctf_get_decl_fields(evt_list[i], BT_EVENT_CONTEXT, | |
643 | &field_list, &field_cnt); | |
644 | ret = check_field_requirements(field_list, field_cnt, | |
645 | &tid_check, &pid_check, &procname_check, | |
646 | &ppid_check); | |
a54d0d2c JD |
647 | |
648 | bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_PACKET_CONTEXT, | |
649 | &field_list, &field_cnt); | |
650 | ret = check_field_requirements(field_list, field_cnt, | |
651 | &tid_check, &pid_check, &procname_check, | |
652 | &ppid_check); | |
a54d0d2c JD |
653 | } |
654 | ||
655 | if (tid_check == 0) { | |
656 | ret = -1; | |
657 | fprintf(stderr, "[error] missing tid context information\n"); | |
658 | } | |
659 | if (pid_check == 0) { | |
660 | ret = -1; | |
661 | fprintf(stderr, "[error] missing pid context information\n"); | |
662 | } | |
663 | if (ppid_check == 0) { | |
664 | ret = -1; | |
665 | fprintf(stderr, "[error] missing ppid context information\n"); | |
666 | } | |
667 | if (procname_check == 0) { | |
668 | ret = -1; | |
669 | fprintf(stderr, "[error] missing procname context information\n"); | |
670 | } | |
671 | ||
a54d0d2c JD |
672 | return ret; |
673 | } | |
674 | ||
16b22a0f JD |
675 | ssize_t read_subbuffer(struct lttng_consumer_stream *kconsumerd_fd, |
676 | struct lttng_consumer_local_data *ctx) | |
677 | { | |
678 | unsigned long len; | |
679 | int err; | |
680 | long ret = 0; | |
681 | int infd = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd); | |
682 | ||
683 | if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_SPLICE) { | |
684 | /* Get the next subbuffer */ | |
16b22a0f JD |
685 | err = helper_kernctl_get_next_subbuf(infd); |
686 | if (err != 0) { | |
687 | ret = errno; | |
688 | perror("Reserving sub buffer failed (everything is normal, " | |
689 | "it is due to concurrency)"); | |
690 | goto end; | |
691 | } | |
692 | /* read the whole subbuffer */ | |
693 | err = helper_kernctl_get_padded_subbuf_size(infd, &len); | |
694 | if (err != 0) { | |
695 | ret = errno; | |
696 | perror("Getting sub-buffer len failed."); | |
697 | goto end; | |
698 | } | |
16b22a0f JD |
699 | |
700 | /* splice the subbuffer to the tracefile */ | |
701 | ret = helper_lttng_consumer_on_read_subbuffer_splice(ctx, kconsumerd_fd, len); | |
702 | if (ret < 0) { | |
703 | /* | |
704 | * display the error but continue processing to try | |
705 | * to release the subbuffer | |
706 | */ | |
707 | fprintf(stderr,"Error splicing to tracefile\n"); | |
708 | } | |
16b22a0f JD |
709 | err = helper_kernctl_put_next_subbuf(infd); |
710 | if (err != 0) { | |
711 | ret = errno; | |
712 | perror("Reserving sub buffer failed (everything is normal, " | |
713 | "it is due to concurrency)"); | |
714 | goto end; | |
715 | } | |
4e6aeb3d | 716 | sem_post(&metadata_available); |
16b22a0f JD |
717 | } |
718 | ||
719 | end: | |
720 | return 0; | |
721 | } | |
722 | ||
723 | int on_update_fd(int key, uint32_t state) | |
724 | { | |
725 | /* let the lib handle the metadata FD */ | |
726 | if (key == sessiond_metadata) | |
727 | return 0; | |
728 | return 1; | |
729 | } | |
730 | ||
731 | int on_recv_fd(struct lttng_consumer_stream *kconsumerd_fd) | |
732 | { | |
733 | int ret; | |
b520ab45 | 734 | struct mmap_stream *new_mmap_stream; |
16b22a0f | 735 | |
16b22a0f JD |
736 | /* Opening the tracefile in write mode */ |
737 | if (helper_get_lttng_consumer_stream_path_name(kconsumerd_fd) != NULL) { | |
738 | ret = open(helper_get_lttng_consumer_stream_path_name(kconsumerd_fd), | |
739 | O_WRONLY|O_CREAT|O_TRUNC, S_IRWXU|S_IRWXG|S_IRWXO); | |
740 | if (ret < 0) { | |
741 | perror("open"); | |
742 | goto end; | |
743 | } | |
744 | helper_set_lttng_consumer_stream_out_fd(kconsumerd_fd, ret); | |
745 | } | |
746 | ||
747 | if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_MMAP) { | |
b520ab45 JD |
748 | new_mmap_stream = malloc(sizeof(struct mmap_stream)); |
749 | new_mmap_stream->fd = helper_get_lttng_consumer_stream_wait_fd( | |
750 | kconsumerd_fd); | |
751 | bt_list_add(&new_mmap_stream->list, &mmap_list.head); | |
16b22a0f JD |
752 | |
753 | g_ptr_array_add(lttng_consumer_stream_array, kconsumerd_fd); | |
6112d0d4 JD |
754 | /* keep mmap FDs internally */ |
755 | ret = 1; | |
16b22a0f JD |
756 | } else { |
757 | consumerd_metadata = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd); | |
758 | sessiond_metadata = helper_get_lttng_consumer_stream_key(kconsumerd_fd); | |
759 | ret = 0; | |
760 | } | |
761 | ||
762 | end: | |
763 | return ret; | |
764 | } | |
765 | ||
e91044a8 JD |
766 | void *live_consume() |
767 | { | |
768 | struct bt_context *bt_ctx = NULL; | |
769 | int ret; | |
770 | ||
71c74ca6 | 771 | if (!metadata_ready) { |
71c74ca6 | 772 | sem_wait(&metadata_available); |
71c74ca6 | 773 | if (access("/tmp/livesession/kernel/metadata", F_OK) != 0) { |
b520ab45 | 774 | fprintf(stderr,"no metadata\n"); |
71c74ca6 | 775 | return NULL; |
c78f2cdc | 776 | } |
71c74ca6 JD |
777 | metadata_ready = 1; |
778 | metadata_fp = fopen("/tmp/livesession/kernel/metadata", "r"); | |
779 | } | |
c78f2cdc | 780 | |
71c74ca6 JD |
781 | if (!trace_opened) { |
782 | bt_ctx = bt_context_create(); | |
783 | ret = bt_context_add_trace(bt_ctx, NULL, "ctf", | |
784 | lttngtop_ctf_packet_seek, &mmap_list, metadata_fp); | |
785 | if (ret < 0) { | |
786 | printf("Error adding trace\n"); | |
787 | return NULL; | |
e91044a8 | 788 | } |
71c74ca6 | 789 | trace_opened = 1; |
e91044a8 | 790 | } |
71c74ca6 | 791 | iter_trace(bt_ctx); |
b520ab45 JD |
792 | |
793 | return NULL; | |
e91044a8 | 794 | } |
16b22a0f JD |
795 | |
796 | int setup_consumer(char *command_sock_path, pthread_t *threads, | |
797 | struct lttng_consumer_local_data *ctx) | |
798 | { | |
799 | int ret = 0; | |
800 | ||
801 | ctx = helper_lttng_consumer_create(HELPER_LTTNG_CONSUMER_KERNEL, | |
802 | read_subbuffer, NULL, on_recv_fd, on_update_fd); | |
803 | if (!ctx) | |
804 | goto end; | |
805 | ||
806 | unlink(command_sock_path); | |
807 | helper_lttng_consumer_set_command_sock_path(ctx, command_sock_path); | |
808 | helper_lttng_consumer_init(); | |
809 | ||
810 | /* Create the thread to manage the receive of fd */ | |
811 | ret = pthread_create(&threads[0], NULL, helper_lttng_consumer_thread_receive_fds, | |
812 | (void *) ctx); | |
813 | if (ret != 0) { | |
c78f2cdc | 814 | perror("pthread_create receive fd"); |
16b22a0f JD |
815 | goto end; |
816 | } | |
e91044a8 JD |
817 | /* Create thread to manage the polling/writing of traces */ |
818 | ret = pthread_create(&threads[1], NULL, helper_lttng_consumer_thread_poll_fds, | |
819 | (void *) ctx); | |
820 | if (ret != 0) { | |
c78f2cdc | 821 | perror("pthread_create poll fd"); |
e91044a8 JD |
822 | goto end; |
823 | } | |
824 | ||
16b22a0f JD |
825 | end: |
826 | return ret; | |
827 | } | |
828 | ||
c78f2cdc | 829 | void *setup_live_tracing() |
16b22a0f JD |
830 | { |
831 | struct lttng_domain dom; | |
832 | struct lttng_channel chan; | |
833 | char *channel_name = "mmapchan"; | |
16b22a0f JD |
834 | struct lttng_event ev; |
835 | int ret = 0; | |
836 | char *command_sock_path = "/tmp/consumerd_sock"; | |
837 | static pthread_t threads[2]; /* recv_fd, poll */ | |
838 | struct lttng_event_context kctxpid, kctxcomm, kctxppid, kctxtid; | |
16b22a0f JD |
839 | |
840 | struct lttng_handle *handle; | |
841 | ||
842 | BT_INIT_LIST_HEAD(&mmap_list.head); | |
843 | ||
844 | lttng_consumer_stream_array = g_ptr_array_new(); | |
845 | ||
846 | if ((ret = setup_consumer(command_sock_path, threads, ctx)) < 0) { | |
847 | fprintf(stderr,"error setting up consumer\n"); | |
848 | goto end; | |
849 | } | |
850 | ||
851 | available_snapshots = g_ptr_array_new(); | |
852 | ||
853 | /* setup the session */ | |
854 | dom.type = LTTNG_DOMAIN_KERNEL; | |
855 | ||
856 | ret = system("rm -rf /tmp/livesession"); | |
857 | ||
71c74ca6 | 858 | lttng_destroy_session("test"); |
16b22a0f JD |
859 | if ((ret = lttng_create_session("test", "/tmp/livesession")) < 0) { |
860 | fprintf(stderr,"error creating the session : %s\n", | |
861 | helper_lttcomm_get_readable_code(ret)); | |
862 | goto end; | |
863 | } | |
864 | ||
865 | if ((handle = lttng_create_handle("test", &dom)) == NULL) { | |
866 | fprintf(stderr,"error creating handle\n"); | |
867 | goto end; | |
868 | } | |
869 | ||
870 | if ((ret = lttng_register_consumer(handle, command_sock_path)) < 0) { | |
871 | fprintf(stderr,"error registering consumer : %s\n", | |
872 | helper_lttcomm_get_readable_code(ret)); | |
873 | goto end; | |
874 | } | |
875 | ||
876 | strcpy(chan.name, channel_name); | |
c78f2cdc | 877 | chan.attr.overwrite = 0; |
6777529d JD |
878 | // chan.attr.subbuf_size = 32768; |
879 | chan.attr.subbuf_size = 1048576; /* 1MB */ | |
16b22a0f JD |
880 | chan.attr.num_subbuf = 4; |
881 | chan.attr.switch_timer_interval = 0; | |
882 | chan.attr.read_timer_interval = 200; | |
883 | chan.attr.output = LTTNG_EVENT_MMAP; | |
884 | ||
885 | if ((ret = lttng_enable_channel(handle, &chan)) < 0) { | |
b872c906 JD |
886 | fprintf(stderr,"error creating channel : %s\n", |
887 | helper_lttcomm_get_readable_code(ret)); | |
16b22a0f JD |
888 | goto end; |
889 | } | |
890 | ||
b872c906 JD |
891 | memset(&ev, '\0', sizeof(struct lttng_event)); |
892 | //sprintf(ev.name, "sched_switch"); | |
16b22a0f | 893 | ev.type = LTTNG_EVENT_TRACEPOINT; |
16b22a0f | 894 | if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) { |
b872c906 JD |
895 | fprintf(stderr,"error enabling event : %s\n", |
896 | helper_lttcomm_get_readable_code(ret)); | |
16b22a0f JD |
897 | goto end; |
898 | } | |
899 | ||
6777529d JD |
900 | ev.type = LTTNG_EVENT_SYSCALL; |
901 | if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) { | |
902 | fprintf(stderr,"error enabling syscalls : %s\n", | |
903 | helper_lttcomm_get_readable_code(ret)); | |
904 | goto end; | |
905 | } | |
906 | ||
16b22a0f JD |
907 | kctxpid.ctx = LTTNG_EVENT_CONTEXT_PID; |
908 | lttng_add_context(handle, &kctxpid, NULL, NULL); | |
909 | kctxppid.ctx = LTTNG_EVENT_CONTEXT_PPID; | |
910 | lttng_add_context(handle, &kctxppid, NULL, NULL); | |
911 | kctxcomm.ctx = LTTNG_EVENT_CONTEXT_PROCNAME; | |
912 | lttng_add_context(handle, &kctxcomm, NULL, NULL); | |
913 | kctxtid.ctx = LTTNG_EVENT_CONTEXT_TID; | |
914 | lttng_add_context(handle, &kctxtid, NULL, NULL); | |
915 | ||
916 | if ((ret = lttng_start_tracing("test")) < 0) { | |
b872c906 JD |
917 | fprintf(stderr,"error starting tracing : %s\n", |
918 | helper_lttcomm_get_readable_code(ret)); | |
16b22a0f JD |
919 | goto end; |
920 | } | |
921 | ||
922 | helper_kernctl_buffer_flush(consumerd_metadata); | |
e91044a8 | 923 | |
16b22a0f | 924 | /* block until metadata is ready */ |
4e6aeb3d | 925 | sem_init(&metadata_available, 0, 0); |
16b22a0f | 926 | |
16b22a0f | 927 | end: |
62e026c6 | 928 | return NULL; |
16b22a0f JD |
929 | } |
930 | ||
1fc22eb4 JD |
931 | int main(int argc, char **argv) |
932 | { | |
933 | int ret; | |
934 | struct bt_context *bt_ctx = NULL; | |
935 | ||
936 | ret = parse_options(argc, argv); | |
937 | if (ret < 0) { | |
938 | fprintf(stdout, "Error parsing options.\n\n"); | |
939 | usage(stdout); | |
940 | exit(EXIT_FAILURE); | |
941 | } else if (ret > 0) { | |
942 | exit(EXIT_SUCCESS); | |
943 | } | |
944 | ||
16b22a0f | 945 | if (!opt_input_path) { |
6777529d JD |
946 | setup_live_tracing(); |
947 | init_lttngtop(); | |
948 | if (!opt_textdump) { | |
949 | pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL); | |
950 | pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL); | |
951 | } | |
952 | live_consume(); | |
953 | ||
71c74ca6 | 954 | sleep(2000); |
c78f2cdc | 955 | lttng_stop_tracing("test"); |
c78f2cdc JD |
956 | lttng_destroy_session("test"); |
957 | ||
1fc22eb4 | 958 | goto end; |
16b22a0f JD |
959 | } else { |
960 | init_lttngtop(); | |
961 | ||
962 | bt_ctx = bt_context_create(); | |
963 | ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL); | |
964 | if (ret < 0) { | |
965 | fprintf(stderr, "[error] Opening the trace\n"); | |
966 | goto end; | |
967 | } | |
1fc22eb4 | 968 | |
16b22a0f JD |
969 | ret = check_requirements(bt_ctx); |
970 | if (ret < 0) { | |
971 | fprintf(stderr, "[error] some mandatory contexts were missing, exiting.\n"); | |
972 | goto end; | |
973 | } | |
974 | pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL); | |
975 | pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL); | |
1fc22eb4 | 976 | |
16b22a0f | 977 | iter_trace(bt_ctx); |
1fc22eb4 | 978 | |
16b22a0f JD |
979 | quit = 1; |
980 | pthread_join(display_thread, NULL); | |
981 | pthread_join(timer_thread, NULL); | |
982 | } | |
1fc22eb4 JD |
983 | |
984 | end: | |
16b22a0f JD |
985 | if (bt_ctx) |
986 | bt_context_put(bt_ctx); | |
987 | ||
1fc22eb4 JD |
988 | return 0; |
989 | } |