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; | |
37b4b0bb | 73 | int reload_trace = 0; |
172f5d66 | 74 | |
1fc22eb4 JD |
75 | enum { |
76 | OPT_NONE = 0, | |
77 | OPT_HELP, | |
84d2a515 | 78 | OPT_TEXTDUMP, |
1fc22eb4 JD |
79 | }; |
80 | ||
81 | static struct poptOption long_options[] = { | |
82 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
83 | { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL }, | |
84d2a515 | 84 | { "textdump", 't', POPT_ARG_NONE, NULL, OPT_TEXTDUMP, NULL, NULL }, |
1fc22eb4 JD |
85 | { NULL, 0, 0, NULL, 0, NULL, NULL }, |
86 | }; | |
87 | ||
88 | void *refresh_thread(void *p) | |
89 | { | |
024eb6c6 JD |
90 | struct mmap_stream *mmap_info; |
91 | ||
1fc22eb4 | 92 | while (1) { |
da4a3c1d JD |
93 | if (quit) { |
94 | sem_post(&pause_sem); | |
95 | sem_post(&timer); | |
96 | sem_post(&goodtodisplay); | |
97 | pthread_exit(0); | |
98 | } | |
024eb6c6 JD |
99 | bt_list_for_each_entry(mmap_info, &mmap_list.head, list) |
100 | helper_kernctl_buffer_flush(mmap_info->fd); | |
1fc22eb4 JD |
101 | sem_wait(&pause_sem); |
102 | sem_post(&pause_sem); | |
103 | sem_post(&timer); | |
104 | sleep(refresh_display/NSEC_PER_SEC); | |
105 | } | |
106 | } | |
107 | ||
108 | void *ncurses_display(void *p) | |
109 | { | |
110 | unsigned int current_display_index = 0; | |
111 | ||
112 | sem_wait(&bootstrap); | |
b332d28f JD |
113 | /* |
114 | * Prevent the 1 second delay when we hit ESC | |
115 | */ | |
116 | ESCDELAY = 0; | |
1fc22eb4 JD |
117 | init_ncurses(); |
118 | ||
119 | while (1) { | |
120 | sem_wait(&timer); | |
121 | sem_wait(&goodtodisplay); | |
122 | sem_wait(&pause_sem); | |
123 | ||
da4a3c1d | 124 | if (quit) { |
24306dda JD |
125 | sem_post(&pause_sem); |
126 | sem_post(&timer); | |
da4a3c1d JD |
127 | reset_ncurses(); |
128 | pthread_exit(0); | |
129 | } | |
130 | ||
1fc22eb4 | 131 | copy = g_ptr_array_index(copies, current_display_index); |
85db4618 JD |
132 | assert(copy); |
133 | display(current_display_index++); | |
1fc22eb4 JD |
134 | |
135 | sem_post(&goodtoupdate); | |
136 | sem_post(&pause_sem); | |
1fc22eb4 JD |
137 | } |
138 | } | |
139 | ||
c1e6815a JD |
140 | /* |
141 | * hook on each event to check the timestamp and refresh the display if | |
142 | * necessary | |
143 | */ | |
144 | enum bt_cb_ret print_timestamp(struct bt_ctf_event *call_data, void *private_data) | |
145 | { | |
146 | unsigned long timestamp; | |
147 | struct tm start; | |
dbb34d88 | 148 | uint64_t ts_nsec_start; |
c1e6815a | 149 | |
c1e6815a JD |
150 | timestamp = bt_ctf_get_timestamp(call_data); |
151 | ||
dbb34d88 | 152 | start = format_timestamp(timestamp); |
c1e6815a JD |
153 | ts_nsec_start = timestamp % NSEC_PER_SEC; |
154 | ||
f03aeb2f JD |
155 | printf("%02d:%02d:%02d.%09" PRIu64 " %s\n", start.tm_hour, |
156 | start.tm_min, start.tm_sec, ts_nsec_start, | |
157 | bt_ctf_event_name(call_data)); | |
c1e6815a JD |
158 | |
159 | return BT_CB_OK; | |
160 | } | |
161 | ||
1fc22eb4 JD |
162 | /* |
163 | * hook on each event to check the timestamp and refresh the display if | |
164 | * necessary | |
165 | */ | |
4adc8274 | 166 | enum bt_cb_ret check_timestamp(struct bt_ctf_event *call_data, void *private_data) |
1fc22eb4 JD |
167 | { |
168 | unsigned long timestamp; | |
169 | ||
67a84e40 | 170 | timestamp = bt_ctf_get_timestamp(call_data); |
1fc22eb4 JD |
171 | if (timestamp == -1ULL) |
172 | goto error; | |
173 | ||
174 | if (last_display_update == 0) | |
175 | last_display_update = timestamp; | |
176 | ||
177 | if (timestamp - last_display_update >= refresh_display) { | |
178 | sem_wait(&goodtoupdate); | |
179 | g_ptr_array_add(copies, get_copy_lttngtop(last_display_update, | |
180 | timestamp)); | |
181 | sem_post(&goodtodisplay); | |
182 | sem_post(&bootstrap); | |
183 | last_display_update = timestamp; | |
184 | } | |
185 | return BT_CB_OK; | |
186 | ||
187 | error: | |
188 | fprintf(stderr, "check_timestamp callback error\n"); | |
189 | return BT_CB_ERROR_STOP; | |
190 | } | |
191 | ||
192 | /* | |
193 | * get_perf_counter : get or create and return a perf_counter struct for | |
194 | * either a process or a cpu (only one of the 2 parameters mandatory) | |
195 | */ | |
196 | struct perfcounter *get_perf_counter(const char *name, struct processtop *proc, | |
197 | struct cputime *cpu) | |
198 | { | |
bb6d72a2 | 199 | struct perfcounter *ret; |
1fc22eb4 JD |
200 | GHashTable *table; |
201 | ||
202 | if (proc) | |
203 | table = proc->perf; | |
204 | else if (cpu) | |
205 | table = cpu->perf; | |
206 | else | |
207 | goto error; | |
208 | ||
209 | ret = g_hash_table_lookup(table, (gpointer) name); | |
210 | if (ret) | |
211 | goto end; | |
212 | ||
559c9f86 | 213 | ret = g_new0(struct perfcounter, 1); |
1fc22eb4 JD |
214 | /* by default, make it visible in the UI */ |
215 | ret->visible = 1; | |
85db4618 | 216 | g_hash_table_insert(table, (gpointer) strdup(name), ret); |
1fc22eb4 | 217 | |
1fc22eb4 JD |
218 | end: |
219 | return ret; | |
220 | ||
221 | error: | |
222 | return NULL; | |
223 | } | |
224 | ||
225 | void update_perf_value(struct processtop *proc, struct cputime *cpu, | |
226 | const char *name, int value) | |
227 | { | |
228 | struct perfcounter *cpu_perf, *process_perf; | |
229 | ||
230 | cpu_perf = get_perf_counter(name, NULL, cpu); | |
231 | if (cpu_perf->count < value) { | |
232 | process_perf = get_perf_counter(name, proc, NULL); | |
233 | process_perf->count += value - cpu_perf->count; | |
234 | cpu_perf->count = value; | |
235 | } | |
236 | } | |
237 | ||
4adc8274 | 238 | void extract_perf_counter_scope(const struct bt_ctf_event *event, |
3ba84bed | 239 | const struct definition *scope, |
1fc22eb4 JD |
240 | struct processtop *proc, |
241 | struct cputime *cpu) | |
242 | { | |
243 | struct definition const * const *list = NULL; | |
bb6d72a2 | 244 | const struct definition *field; |
1fc22eb4 | 245 | unsigned int count; |
bb6d72a2 JD |
246 | struct perfcounter *perfcounter; |
247 | GHashTableIter iter; | |
248 | gpointer key; | |
249 | int ret; | |
1fc22eb4 JD |
250 | |
251 | if (!scope) | |
252 | goto end; | |
253 | ||
254 | ret = bt_ctf_get_field_list(event, scope, &list, &count); | |
255 | if (ret < 0) | |
256 | goto end; | |
257 | ||
bb6d72a2 JD |
258 | if (count == 0) |
259 | goto end; | |
260 | ||
261 | g_hash_table_iter_init(&iter, global_perf_liszt); | |
262 | while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfcounter)) { | |
263 | field = bt_ctf_get_field(event, scope, (char *) key); | |
264 | if (field) { | |
265 | int value = bt_ctf_get_uint64(field); | |
1fc22eb4 JD |
266 | if (bt_ctf_field_get_error()) |
267 | continue; | |
bb6d72a2 | 268 | update_perf_value(proc, cpu, (char *) key, value); |
1fc22eb4 JD |
269 | } |
270 | } | |
271 | ||
272 | end: | |
273 | return; | |
274 | } | |
275 | ||
4adc8274 | 276 | void update_perf_counter(struct processtop *proc, const struct bt_ctf_event *event) |
1fc22eb4 | 277 | { |
1fc22eb4 | 278 | struct cputime *cpu; |
3ba84bed | 279 | const struct definition *scope; |
1fc22eb4 | 280 | |
d67167cd | 281 | cpu = get_cpu(get_cpu_id(event)); |
1fc22eb4 JD |
282 | |
283 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT); | |
284 | extract_perf_counter_scope(event, scope, proc, cpu); | |
285 | ||
286 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT); | |
287 | extract_perf_counter_scope(event, scope, proc, cpu); | |
288 | ||
289 | scope = bt_ctf_get_top_level_scope(event, BT_EVENT_CONTEXT); | |
290 | extract_perf_counter_scope(event, scope, proc, cpu); | |
1fc22eb4 JD |
291 | } |
292 | ||
4adc8274 | 293 | enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data, |
1fc22eb4 JD |
294 | void *private_data) |
295 | { | |
296 | int pid, tid, ppid; | |
297 | char *comm; | |
298 | struct processtop *parent, *child; | |
1fc22eb4 JD |
299 | unsigned long timestamp; |
300 | ||
67a84e40 | 301 | timestamp = bt_ctf_get_timestamp(call_data); |
1fc22eb4 JD |
302 | if (timestamp == -1ULL) |
303 | goto error; | |
304 | ||
1dec520a JD |
305 | pid = get_context_pid(call_data); |
306 | if (pid == -1ULL) { | |
1fc22eb4 JD |
307 | goto error; |
308 | } | |
1dec520a JD |
309 | tid = get_context_tid(call_data); |
310 | if (tid == -1ULL) { | |
1fc22eb4 JD |
311 | goto error; |
312 | } | |
1dec520a JD |
313 | ppid = get_context_ppid(call_data); |
314 | if (ppid == -1ULL) { | |
1fc22eb4 JD |
315 | goto error; |
316 | } | |
1dec520a JD |
317 | comm = get_context_comm(call_data); |
318 | if (!comm) { | |
1fc22eb4 JD |
319 | goto error; |
320 | } | |
321 | ||
322 | /* find or create the current process */ | |
323 | child = find_process_tid(<tngtop, tid, comm); | |
324 | if (!child) | |
325 | child = add_proc(<tngtop, tid, comm, timestamp); | |
326 | update_proc(child, pid, tid, ppid, comm); | |
327 | ||
328 | if (pid != tid) { | |
329 | /* find or create the parent */ | |
330 | parent = find_process_tid(<tngtop, pid, comm); | |
331 | if (!parent) { | |
332 | parent = add_proc(<tngtop, pid, comm, timestamp); | |
333 | parent->pid = pid; | |
334 | } | |
335 | ||
336 | /* attach the parent to the current process */ | |
337 | child->threadparent = parent; | |
338 | add_thread(parent, child); | |
339 | } | |
340 | ||
341 | update_perf_counter(child, call_data); | |
342 | ||
343 | return BT_CB_OK; | |
344 | ||
345 | error: | |
346 | return BT_CB_ERROR_STOP; | |
347 | } | |
348 | ||
349 | void init_lttngtop() | |
350 | { | |
351 | copies = g_ptr_array_new(); | |
0d91c12a | 352 | global_perf_liszt = g_hash_table_new(g_str_hash, g_str_equal); |
1fc22eb4 JD |
353 | |
354 | sem_init(&goodtodisplay, 0, 0); | |
355 | sem_init(&goodtoupdate, 0, 1); | |
356 | sem_init(&timer, 0, 1); | |
357 | sem_init(&bootstrap, 0, 0); | |
358 | sem_init(&pause_sem, 0, 1); | |
359 | sem_init(&end_trace_sem, 0, 0); | |
360 | ||
e05a35a6 JD |
361 | reset_global_counters(); |
362 | lttngtop.nbproc = 0; | |
363 | lttngtop.nbthreads = 0; | |
364 | lttngtop.nbfiles = 0; | |
365 | ||
5db6fc65 JD |
366 | lttngtop.process_hash_table = g_hash_table_new(g_direct_hash, |
367 | g_direct_equal); | |
1fc22eb4 JD |
368 | lttngtop.process_table = g_ptr_array_new(); |
369 | lttngtop.files_table = g_ptr_array_new(); | |
370 | lttngtop.cpu_table = g_ptr_array_new(); | |
371 | } | |
372 | ||
c263c4eb | 373 | void usage(FILE *fp) |
1fc22eb4 | 374 | { |
c263c4eb JD |
375 | fprintf(fp, "LTTngTop %s\n\n", VERSION); |
376 | fprintf(fp, "Usage : lttngtop /path/to/trace\n"); | |
1fc22eb4 JD |
377 | } |
378 | ||
379 | /* | |
380 | * Return 0 if caller should continue, < 0 if caller should return | |
381 | * error, > 0 if caller should exit without reporting error. | |
382 | */ | |
383 | static int parse_options(int argc, char **argv) | |
384 | { | |
385 | poptContext pc; | |
386 | int opt, ret = 0; | |
387 | ||
1fc22eb4 JD |
388 | pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0); |
389 | poptReadDefaultConfig(pc, 0); | |
390 | ||
391 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
392 | switch (opt) { | |
393 | case OPT_HELP: | |
394 | usage(stdout); | |
395 | ret = 1; /* exit cleanly */ | |
396 | goto end; | |
84d2a515 JD |
397 | case OPT_TEXTDUMP: |
398 | opt_textdump = 1; | |
399 | goto end; | |
1fc22eb4 JD |
400 | default: |
401 | ret = -EINVAL; | |
402 | goto end; | |
403 | } | |
404 | } | |
405 | ||
406 | opt_input_path = poptGetArg(pc); | |
172f5d66 | 407 | |
1fc22eb4 JD |
408 | end: |
409 | if (pc) { | |
410 | poptFreeContext(pc); | |
411 | } | |
412 | return ret; | |
413 | } | |
414 | ||
415 | void iter_trace(struct bt_context *bt_ctx) | |
416 | { | |
417 | struct bt_ctf_iter *iter; | |
418 | struct bt_iter_pos begin_pos; | |
4adc8274 | 419 | const struct bt_ctf_event *event; |
1fc22eb4 JD |
420 | int ret = 0; |
421 | ||
422 | begin_pos.type = BT_SEEK_BEGIN; | |
423 | iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL); | |
424 | ||
84d2a515 JD |
425 | if (opt_textdump) { |
426 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
427 | print_timestamp, | |
428 | NULL, NULL, NULL); | |
429 | } else { | |
430 | /* at each event check if we need to refresh */ | |
431 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
432 | check_timestamp, | |
433 | NULL, NULL, NULL); | |
434 | /* at each event, verify the status of the process table */ | |
435 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
436 | fix_process_table, | |
437 | NULL, NULL, NULL); | |
438 | /* to handle the scheduling events */ | |
439 | bt_ctf_iter_add_callback(iter, | |
440 | g_quark_from_static_string("sched_switch"), | |
441 | NULL, 0, handle_sched_switch, NULL, NULL, NULL); | |
442 | /* to clean up the process table */ | |
443 | bt_ctf_iter_add_callback(iter, | |
444 | g_quark_from_static_string("sched_process_free"), | |
445 | NULL, 0, handle_sched_process_free, NULL, NULL, NULL); | |
446 | /* to get all the process from the statedumps */ | |
447 | bt_ctf_iter_add_callback(iter, | |
448 | g_quark_from_static_string( | |
449 | "lttng_statedump_process_state"), | |
450 | NULL, 0, handle_statedump_process_state, | |
451 | NULL, NULL, NULL); | |
452 | ||
453 | /* for IO top */ | |
454 | bt_ctf_iter_add_callback(iter, | |
455 | g_quark_from_static_string("exit_syscall"), | |
456 | NULL, 0, handle_exit_syscall, NULL, NULL, NULL); | |
457 | bt_ctf_iter_add_callback(iter, | |
458 | g_quark_from_static_string("sys_write"), | |
459 | NULL, 0, handle_sys_write, NULL, NULL, NULL); | |
460 | bt_ctf_iter_add_callback(iter, | |
461 | g_quark_from_static_string("sys_read"), | |
462 | NULL, 0, handle_sys_read, NULL, NULL, NULL); | |
463 | bt_ctf_iter_add_callback(iter, | |
464 | g_quark_from_static_string("sys_open"), | |
465 | NULL, 0, handle_sys_open, NULL, NULL, NULL); | |
466 | bt_ctf_iter_add_callback(iter, | |
467 | g_quark_from_static_string("sys_close"), | |
468 | NULL, 0, handle_sys_close, NULL, NULL, NULL); | |
469 | bt_ctf_iter_add_callback(iter, | |
470 | g_quark_from_static_string( | |
ceb3a221 | 471 | "lttng_statedump_file_descriptor"), |
84d2a515 JD |
472 | NULL, 0, handle_statedump_file_descriptor, |
473 | NULL, NULL, NULL); | |
474 | } | |
475 | ||
37b4b0bb JD |
476 | while ((event = bt_ctf_iter_read_event(iter)) != NULL) { |
477 | if (quit || reload_trace) | |
da4a3c1d | 478 | goto end_iter; |
1fc22eb4 JD |
479 | ret = bt_iter_next(bt_ctf_get_iter(iter)); |
480 | if (ret < 0) | |
481 | goto end_iter; | |
482 | } | |
483 | ||
484 | /* block until quit, we reached the end of the trace */ | |
485 | sem_wait(&end_trace_sem); | |
486 | ||
487 | end_iter: | |
06570214 | 488 | bt_ctf_iter_destroy(iter); |
1fc22eb4 JD |
489 | } |
490 | ||
491 | /* | |
492 | * bt_context_add_traces_recursive: Open a trace recursively | |
493 | * (copied from BSD code in converter/babeltrace.c) | |
494 | * | |
495 | * Find each trace present in the subdirectory starting from the given | |
496 | * path, and add them to the context. The packet_seek parameter can be | |
497 | * NULL: this specify to use the default format packet_seek. | |
498 | * | |
499 | * Return: 0 on success, nonzero on failure. | |
500 | * Unable to open toplevel: failure. | |
501 | * Unable to open some subdirectory or file: warn and continue; | |
502 | */ | |
503 | int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path, | |
504 | const char *format_str, | |
505 | void (*packet_seek)(struct stream_pos *pos, | |
506 | size_t offset, int whence)) | |
507 | { | |
508 | FTS *tree; | |
509 | FTSENT *node; | |
510 | GArray *trace_ids; | |
511 | char lpath[PATH_MAX]; | |
512 | char * const paths[2] = { lpath, NULL }; | |
0d567cf1 | 513 | int ret = -1; |
1fc22eb4 JD |
514 | |
515 | /* | |
516 | * Need to copy path, because fts_open can change it. | |
517 | * It is the pointer array, not the strings, that are constant. | |
518 | */ | |
519 | strncpy(lpath, path, PATH_MAX); | |
520 | lpath[PATH_MAX - 1] = '\0'; | |
521 | ||
522 | tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0); | |
523 | if (tree == NULL) { | |
524 | fprintf(stderr, "[error] [Context] Cannot traverse \"%s\" for reading.\n", | |
525 | path); | |
526 | return -EINVAL; | |
527 | } | |
528 | ||
529 | trace_ids = g_array_new(FALSE, TRUE, sizeof(int)); | |
530 | ||
531 | while ((node = fts_read(tree))) { | |
532 | int dirfd, metafd; | |
533 | ||
534 | if (!(node->fts_info & FTS_D)) | |
535 | continue; | |
536 | ||
537 | dirfd = open(node->fts_accpath, 0); | |
538 | if (dirfd < 0) { | |
539 | fprintf(stderr, "[error] [Context] Unable to open trace " | |
540 | "directory file descriptor.\n"); | |
541 | ret = dirfd; | |
542 | goto error; | |
543 | } | |
544 | metafd = openat(dirfd, "metadata", O_RDONLY); | |
545 | if (metafd < 0) { | |
7314c855 JD |
546 | close(dirfd); |
547 | ret = -1; | |
548 | continue; | |
1fc22eb4 JD |
549 | } else { |
550 | int trace_id; | |
551 | ||
552 | ret = close(metafd); | |
553 | if (ret < 0) { | |
554 | perror("close"); | |
555 | goto error; | |
556 | } | |
557 | ret = close(dirfd); | |
558 | if (ret < 0) { | |
559 | perror("close"); | |
560 | goto error; | |
561 | } | |
562 | ||
563 | trace_id = bt_context_add_trace(ctx, | |
564 | node->fts_accpath, format_str, | |
565 | packet_seek, NULL, NULL); | |
566 | if (trace_id < 0) { | |
0d567cf1 | 567 | fprintf(stderr, "[warning] [Context] opening trace \"%s\" from %s " |
1fc22eb4 | 568 | "for reading.\n", node->fts_accpath, path); |
0d567cf1 JD |
569 | /* Allow to skip erroneous traces. */ |
570 | continue; | |
1fc22eb4 JD |
571 | } |
572 | g_array_append_val(trace_ids, trace_id); | |
573 | } | |
574 | } | |
575 | ||
576 | g_array_free(trace_ids, TRUE); | |
0d567cf1 | 577 | return ret; |
1fc22eb4 JD |
578 | |
579 | error: | |
580 | return ret; | |
581 | } | |
582 | ||
4553b4d1 | 583 | static int check_field_requirements(const struct bt_ctf_field_decl *const * field_list, |
a54d0d2c JD |
584 | int field_cnt, int *tid_check, int *pid_check, |
585 | int *procname_check, int *ppid_check) | |
586 | { | |
587 | int j; | |
bb6d72a2 JD |
588 | struct perfcounter *global; |
589 | const char *name; | |
a54d0d2c JD |
590 | |
591 | for (j = 0; j < field_cnt; j++) { | |
bb6d72a2 | 592 | name = bt_ctf_get_decl_field_name(field_list[j]); |
a54d0d2c | 593 | if (*tid_check == 0) { |
bb6d72a2 | 594 | if (strncmp(name, "tid", 3) == 0) |
a54d0d2c | 595 | (*tid_check)++; |
a54d0d2c JD |
596 | } |
597 | if (*pid_check == 0) { | |
bb6d72a2 | 598 | if (strncmp(name, "tid", 3) == 0) |
a54d0d2c JD |
599 | (*pid_check)++; |
600 | } | |
601 | if (*ppid_check == 0) { | |
bb6d72a2 | 602 | if (strncmp(name, "ppid", 4) == 0) |
a54d0d2c JD |
603 | (*ppid_check)++; |
604 | } | |
605 | if (*procname_check == 0) { | |
bb6d72a2 | 606 | if (strncmp(name, "procname", 8) == 0) |
a54d0d2c JD |
607 | (*procname_check)++; |
608 | } | |
bb6d72a2 JD |
609 | if (strncmp(name, "perf_", 5) == 0) { |
610 | global = g_hash_table_lookup(global_perf_liszt, (gpointer) name); | |
611 | if (!global) { | |
612 | global = g_new0(struct perfcounter, 1); | |
613 | /* by default, sort on the first perf context */ | |
614 | if (g_hash_table_size(global_perf_liszt) == 0) | |
615 | global->sort = 1; | |
616 | global->visible = 1; | |
617 | g_hash_table_insert(global_perf_liszt, (gpointer) strdup(name), global); | |
618 | } | |
619 | } | |
a54d0d2c | 620 | } |
bb6d72a2 | 621 | |
a54d0d2c JD |
622 | if (*tid_check == 1 && *pid_check == 1 && *ppid_check == 1 && |
623 | *procname_check == 1) | |
624 | return 0; | |
625 | ||
626 | return -1; | |
627 | } | |
628 | ||
629 | /* | |
630 | * check_requirements: check if the required context informations are available | |
631 | * | |
632 | * If each mandatory context information is available for at least in one | |
633 | * event, return 0 otherwise return -1. | |
a54d0d2c JD |
634 | */ |
635 | int check_requirements(struct bt_context *ctx) | |
636 | { | |
637 | unsigned int i, evt_cnt, field_cnt; | |
638 | struct bt_ctf_event_decl *const * evt_list; | |
639 | const struct bt_ctf_field_decl *const * field_list; | |
640 | int tid_check = 0; | |
641 | int pid_check = 0; | |
642 | int procname_check = 0; | |
643 | int ppid_check = 0; | |
644 | int ret = 0; | |
645 | ||
646 | bt_ctf_get_event_decl_list(0, ctx, &evt_list, &evt_cnt); | |
647 | for (i = 0; i < evt_cnt; i++) { | |
648 | bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_EVENT_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 | bt_ctf_get_decl_fields(evt_list[i], BT_EVENT_CONTEXT, | |
655 | &field_list, &field_cnt); | |
656 | ret = check_field_requirements(field_list, field_cnt, | |
657 | &tid_check, &pid_check, &procname_check, | |
658 | &ppid_check); | |
a54d0d2c JD |
659 | |
660 | bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_PACKET_CONTEXT, | |
661 | &field_list, &field_cnt); | |
662 | ret = check_field_requirements(field_list, field_cnt, | |
663 | &tid_check, &pid_check, &procname_check, | |
664 | &ppid_check); | |
a54d0d2c JD |
665 | } |
666 | ||
667 | if (tid_check == 0) { | |
668 | ret = -1; | |
669 | fprintf(stderr, "[error] missing tid context information\n"); | |
670 | } | |
671 | if (pid_check == 0) { | |
672 | ret = -1; | |
673 | fprintf(stderr, "[error] missing pid context information\n"); | |
674 | } | |
675 | if (ppid_check == 0) { | |
676 | ret = -1; | |
677 | fprintf(stderr, "[error] missing ppid context information\n"); | |
678 | } | |
679 | if (procname_check == 0) { | |
680 | ret = -1; | |
681 | fprintf(stderr, "[error] missing procname context information\n"); | |
682 | } | |
683 | ||
a54d0d2c JD |
684 | return ret; |
685 | } | |
686 | ||
172f5d66 JD |
687 | ssize_t read_subbuffer(struct lttng_consumer_stream *kconsumerd_fd, |
688 | struct lttng_consumer_local_data *ctx) | |
689 | { | |
690 | unsigned long len; | |
691 | int err; | |
692 | long ret = 0; | |
693 | int infd = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd); | |
694 | ||
695 | if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_SPLICE) { | |
696 | /* Get the next subbuffer */ | |
172f5d66 JD |
697 | err = helper_kernctl_get_next_subbuf(infd); |
698 | if (err != 0) { | |
699 | ret = errno; | |
700 | perror("Reserving sub buffer failed (everything is normal, " | |
701 | "it is due to concurrency)"); | |
702 | goto end; | |
703 | } | |
704 | /* read the whole subbuffer */ | |
705 | err = helper_kernctl_get_padded_subbuf_size(infd, &len); | |
706 | if (err != 0) { | |
707 | ret = errno; | |
708 | perror("Getting sub-buffer len failed."); | |
709 | goto end; | |
710 | } | |
172f5d66 JD |
711 | |
712 | /* splice the subbuffer to the tracefile */ | |
713 | ret = helper_lttng_consumer_on_read_subbuffer_splice(ctx, kconsumerd_fd, len); | |
714 | if (ret < 0) { | |
715 | /* | |
716 | * display the error but continue processing to try | |
717 | * to release the subbuffer | |
718 | */ | |
719 | fprintf(stderr,"Error splicing to tracefile\n"); | |
720 | } | |
172f5d66 JD |
721 | err = helper_kernctl_put_next_subbuf(infd); |
722 | if (err != 0) { | |
723 | ret = errno; | |
724 | perror("Reserving sub buffer failed (everything is normal, " | |
725 | "it is due to concurrency)"); | |
726 | goto end; | |
727 | } | |
0865cf6b | 728 | sem_post(&metadata_available); |
172f5d66 JD |
729 | } |
730 | ||
731 | end: | |
732 | return 0; | |
733 | } | |
734 | ||
735 | int on_update_fd(int key, uint32_t state) | |
736 | { | |
737 | /* let the lib handle the metadata FD */ | |
738 | if (key == sessiond_metadata) | |
739 | return 0; | |
740 | return 1; | |
741 | } | |
742 | ||
743 | int on_recv_fd(struct lttng_consumer_stream *kconsumerd_fd) | |
744 | { | |
745 | int ret; | |
dbb34d88 | 746 | struct mmap_stream *new_mmap_stream; |
172f5d66 | 747 | |
172f5d66 JD |
748 | /* Opening the tracefile in write mode */ |
749 | if (helper_get_lttng_consumer_stream_path_name(kconsumerd_fd) != NULL) { | |
750 | ret = open(helper_get_lttng_consumer_stream_path_name(kconsumerd_fd), | |
751 | O_WRONLY|O_CREAT|O_TRUNC, S_IRWXU|S_IRWXG|S_IRWXO); | |
752 | if (ret < 0) { | |
753 | perror("open"); | |
754 | goto end; | |
755 | } | |
756 | helper_set_lttng_consumer_stream_out_fd(kconsumerd_fd, ret); | |
757 | } | |
758 | ||
759 | if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_MMAP) { | |
dbb34d88 JD |
760 | new_mmap_stream = malloc(sizeof(struct mmap_stream)); |
761 | new_mmap_stream->fd = helper_get_lttng_consumer_stream_wait_fd( | |
762 | kconsumerd_fd); | |
763 | bt_list_add(&new_mmap_stream->list, &mmap_list.head); | |
172f5d66 JD |
764 | |
765 | g_ptr_array_add(lttng_consumer_stream_array, kconsumerd_fd); | |
c1e6815a JD |
766 | /* keep mmap FDs internally */ |
767 | ret = 1; | |
172f5d66 JD |
768 | } else { |
769 | consumerd_metadata = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd); | |
770 | sessiond_metadata = helper_get_lttng_consumer_stream_key(kconsumerd_fd); | |
771 | ret = 0; | |
772 | } | |
773 | ||
37b4b0bb JD |
774 | reload_trace = 1; |
775 | ||
172f5d66 JD |
776 | end: |
777 | return ret; | |
778 | } | |
779 | ||
a440e379 | 780 | void live_consume(struct bt_context **bt_ctx) |
346f2b4c | 781 | { |
346f2b4c | 782 | int ret; |
37b4b0bb | 783 | FILE *metadata_fp; |
346f2b4c | 784 | |
37b4b0bb JD |
785 | sem_wait(&metadata_available); |
786 | if (access("/tmp/livesession/kernel/metadata", F_OK) != 0) { | |
787 | fprintf(stderr,"no metadata\n"); | |
788 | goto end; | |
f03aeb2f | 789 | } |
37b4b0bb | 790 | metadata_fp = fopen("/tmp/livesession/kernel/metadata", "r"); |
67a84e40 | 791 | |
37b4b0bb JD |
792 | *bt_ctx = bt_context_create(); |
793 | ret = bt_context_add_trace(*bt_ctx, NULL, "ctf", | |
794 | lttngtop_ctf_packet_seek, &mmap_list, metadata_fp); | |
795 | if (ret < 0) { | |
796 | printf("Error adding trace\n"); | |
797 | goto end; | |
346f2b4c | 798 | } |
dbb34d88 | 799 | |
a440e379 JD |
800 | end: |
801 | return; | |
346f2b4c | 802 | } |
172f5d66 JD |
803 | |
804 | int setup_consumer(char *command_sock_path, pthread_t *threads, | |
805 | struct lttng_consumer_local_data *ctx) | |
806 | { | |
807 | int ret = 0; | |
808 | ||
809 | ctx = helper_lttng_consumer_create(HELPER_LTTNG_CONSUMER_KERNEL, | |
810 | read_subbuffer, NULL, on_recv_fd, on_update_fd); | |
811 | if (!ctx) | |
812 | goto end; | |
813 | ||
814 | unlink(command_sock_path); | |
815 | helper_lttng_consumer_set_command_sock_path(ctx, command_sock_path); | |
816 | helper_lttng_consumer_init(); | |
817 | ||
818 | /* Create the thread to manage the receive of fd */ | |
819 | ret = pthread_create(&threads[0], NULL, helper_lttng_consumer_thread_receive_fds, | |
820 | (void *) ctx); | |
821 | if (ret != 0) { | |
67a84e40 | 822 | perror("pthread_create receive fd"); |
172f5d66 JD |
823 | goto end; |
824 | } | |
346f2b4c JD |
825 | /* Create thread to manage the polling/writing of traces */ |
826 | ret = pthread_create(&threads[1], NULL, helper_lttng_consumer_thread_poll_fds, | |
827 | (void *) ctx); | |
828 | if (ret != 0) { | |
67a84e40 | 829 | perror("pthread_create poll fd"); |
346f2b4c JD |
830 | goto end; |
831 | } | |
832 | ||
172f5d66 JD |
833 | end: |
834 | return ret; | |
835 | } | |
836 | ||
33ff396d | 837 | int setup_live_tracing() |
172f5d66 JD |
838 | { |
839 | struct lttng_domain dom; | |
840 | struct lttng_channel chan; | |
841 | char *channel_name = "mmapchan"; | |
172f5d66 JD |
842 | struct lttng_event ev; |
843 | int ret = 0; | |
844 | char *command_sock_path = "/tmp/consumerd_sock"; | |
845 | static pthread_t threads[2]; /* recv_fd, poll */ | |
846 | struct lttng_event_context kctxpid, kctxcomm, kctxppid, kctxtid; | |
172f5d66 JD |
847 | |
848 | struct lttng_handle *handle; | |
849 | ||
850 | BT_INIT_LIST_HEAD(&mmap_list.head); | |
851 | ||
852 | lttng_consumer_stream_array = g_ptr_array_new(); | |
853 | ||
854 | if ((ret = setup_consumer(command_sock_path, threads, ctx)) < 0) { | |
855 | fprintf(stderr,"error setting up consumer\n"); | |
33ff396d | 856 | goto error; |
172f5d66 JD |
857 | } |
858 | ||
859 | available_snapshots = g_ptr_array_new(); | |
860 | ||
861 | /* setup the session */ | |
862 | dom.type = LTTNG_DOMAIN_KERNEL; | |
863 | ||
a440e379 | 864 | ret = unlink("/tmp/livesession"); |
172f5d66 | 865 | |
f03aeb2f | 866 | lttng_destroy_session("test"); |
172f5d66 JD |
867 | if ((ret = lttng_create_session("test", "/tmp/livesession")) < 0) { |
868 | fprintf(stderr,"error creating the session : %s\n", | |
869 | helper_lttcomm_get_readable_code(ret)); | |
33ff396d | 870 | goto error; |
172f5d66 JD |
871 | } |
872 | ||
873 | if ((handle = lttng_create_handle("test", &dom)) == NULL) { | |
874 | fprintf(stderr,"error creating handle\n"); | |
33ff396d | 875 | goto error_session; |
172f5d66 JD |
876 | } |
877 | ||
37b4b0bb JD |
878 | /* |
879 | * FIXME : need to let the | |
880 | * helper_lttng_consumer_thread_receive_fds create the | |
881 | * socket. | |
882 | * Cleaner solution ? | |
883 | */ | |
884 | while (access(command_sock_path, F_OK)) { | |
885 | sleep(0.1); | |
886 | } | |
887 | ||
172f5d66 JD |
888 | if ((ret = lttng_register_consumer(handle, command_sock_path)) < 0) { |
889 | fprintf(stderr,"error registering consumer : %s\n", | |
890 | helper_lttcomm_get_readable_code(ret)); | |
33ff396d | 891 | goto error_session; |
172f5d66 JD |
892 | } |
893 | ||
894 | strcpy(chan.name, channel_name); | |
67a84e40 | 895 | chan.attr.overwrite = 0; |
84d2a515 JD |
896 | // chan.attr.subbuf_size = 32768; |
897 | chan.attr.subbuf_size = 1048576; /* 1MB */ | |
172f5d66 JD |
898 | chan.attr.num_subbuf = 4; |
899 | chan.attr.switch_timer_interval = 0; | |
900 | chan.attr.read_timer_interval = 200; | |
901 | chan.attr.output = LTTNG_EVENT_MMAP; | |
902 | ||
903 | if ((ret = lttng_enable_channel(handle, &chan)) < 0) { | |
154f4a27 JD |
904 | fprintf(stderr,"error creating channel : %s\n", |
905 | helper_lttcomm_get_readable_code(ret)); | |
33ff396d | 906 | goto error_session; |
172f5d66 JD |
907 | } |
908 | ||
154f4a27 JD |
909 | memset(&ev, '\0', sizeof(struct lttng_event)); |
910 | //sprintf(ev.name, "sched_switch"); | |
172f5d66 | 911 | ev.type = LTTNG_EVENT_TRACEPOINT; |
172f5d66 | 912 | if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) { |
154f4a27 JD |
913 | fprintf(stderr,"error enabling event : %s\n", |
914 | helper_lttcomm_get_readable_code(ret)); | |
33ff396d | 915 | goto error_session; |
172f5d66 JD |
916 | } |
917 | ||
84d2a515 JD |
918 | ev.type = LTTNG_EVENT_SYSCALL; |
919 | if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) { | |
920 | fprintf(stderr,"error enabling syscalls : %s\n", | |
921 | helper_lttcomm_get_readable_code(ret)); | |
33ff396d | 922 | goto error_session; |
84d2a515 JD |
923 | } |
924 | ||
172f5d66 JD |
925 | kctxpid.ctx = LTTNG_EVENT_CONTEXT_PID; |
926 | lttng_add_context(handle, &kctxpid, NULL, NULL); | |
927 | kctxppid.ctx = LTTNG_EVENT_CONTEXT_PPID; | |
928 | lttng_add_context(handle, &kctxppid, NULL, NULL); | |
929 | kctxcomm.ctx = LTTNG_EVENT_CONTEXT_PROCNAME; | |
930 | lttng_add_context(handle, &kctxcomm, NULL, NULL); | |
931 | kctxtid.ctx = LTTNG_EVENT_CONTEXT_TID; | |
932 | lttng_add_context(handle, &kctxtid, NULL, NULL); | |
933 | ||
934 | if ((ret = lttng_start_tracing("test")) < 0) { | |
154f4a27 JD |
935 | fprintf(stderr,"error starting tracing : %s\n", |
936 | helper_lttcomm_get_readable_code(ret)); | |
33ff396d | 937 | goto error_session; |
172f5d66 JD |
938 | } |
939 | ||
940 | helper_kernctl_buffer_flush(consumerd_metadata); | |
346f2b4c | 941 | |
172f5d66 | 942 | /* block until metadata is ready */ |
0865cf6b | 943 | sem_init(&metadata_available, 0, 0); |
172f5d66 | 944 | |
33ff396d JD |
945 | return 0; |
946 | ||
947 | error_session: | |
948 | lttng_destroy_session("test"); | |
949 | error: | |
950 | return -1; | |
172f5d66 JD |
951 | } |
952 | ||
1fc22eb4 JD |
953 | int main(int argc, char **argv) |
954 | { | |
955 | int ret; | |
956 | struct bt_context *bt_ctx = NULL; | |
37b4b0bb JD |
957 | struct mmap_stream *mmap_info; |
958 | unsigned long mmap_len; | |
1fc22eb4 JD |
959 | |
960 | ret = parse_options(argc, argv); | |
961 | if (ret < 0) { | |
962 | fprintf(stdout, "Error parsing options.\n\n"); | |
963 | usage(stdout); | |
964 | exit(EXIT_FAILURE); | |
965 | } else if (ret > 0) { | |
966 | exit(EXIT_SUCCESS); | |
967 | } | |
968 | ||
172f5d66 | 969 | if (!opt_input_path) { |
33ff396d JD |
970 | ret = setup_live_tracing(); |
971 | if (ret < 0) { | |
972 | goto end; | |
973 | } | |
84d2a515 JD |
974 | init_lttngtop(); |
975 | if (!opt_textdump) { | |
976 | pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL); | |
977 | pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL); | |
978 | } | |
37b4b0bb JD |
979 | while (!quit) { |
980 | reload_trace = 0; | |
981 | live_consume(&bt_ctx); | |
982 | iter_trace(bt_ctx); | |
983 | ret = bt_context_remove_trace(bt_ctx, 0); | |
984 | if (ret != 0) | |
985 | fprintf(stderr, "error removing trace\n"); | |
986 | if (bt_ctx) { | |
987 | bt_context_put(bt_ctx); | |
988 | } | |
989 | ||
990 | /* | |
991 | * since we receive all FDs every time there is an | |
992 | * update and the FD number is different every time, | |
993 | * we don't know which one are valid. | |
994 | * so we check if all FDs are usable with a simple | |
995 | * ioctl call. | |
996 | */ | |
997 | bt_list_for_each_entry(mmap_info, &mmap_list.head, list) { | |
998 | ret = helper_kernctl_get_mmap_len(mmap_info->fd, &mmap_len); | |
999 | if (ret != 0) { | |
37b4b0bb JD |
1000 | bt_list_del(&mmap_info->list); |
1001 | } | |
1002 | } | |
1003 | sem_post(&metadata_available); | |
1004 | } | |
a440e379 | 1005 | |
da4a3c1d | 1006 | pthread_join(timer_thread, NULL); |
a440e379 JD |
1007 | quit = 1; |
1008 | pthread_join(display_thread, NULL); | |
84d2a515 | 1009 | |
67a84e40 | 1010 | lttng_stop_tracing("test"); |
67a84e40 JD |
1011 | lttng_destroy_session("test"); |
1012 | ||
1fc22eb4 | 1013 | goto end; |
172f5d66 JD |
1014 | } else { |
1015 | init_lttngtop(); | |
1016 | ||
1017 | bt_ctx = bt_context_create(); | |
1018 | ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL); | |
1019 | if (ret < 0) { | |
1020 | fprintf(stderr, "[error] Opening the trace\n"); | |
1021 | goto end; | |
1022 | } | |
1fc22eb4 | 1023 | |
172f5d66 JD |
1024 | ret = check_requirements(bt_ctx); |
1025 | if (ret < 0) { | |
1026 | fprintf(stderr, "[error] some mandatory contexts were missing, exiting.\n"); | |
1027 | goto end; | |
1028 | } | |
1029 | pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL); | |
1030 | pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL); | |
1fc22eb4 | 1031 | |
172f5d66 | 1032 | iter_trace(bt_ctx); |
1fc22eb4 | 1033 | |
172f5d66 | 1034 | pthread_join(display_thread, NULL); |
da4a3c1d | 1035 | quit = 1; |
172f5d66 JD |
1036 | pthread_join(timer_thread, NULL); |
1037 | } | |
1fc22eb4 JD |
1038 | |
1039 | end: | |
172f5d66 JD |
1040 | if (bt_ctx) |
1041 | bt_context_put(bt_ctx); | |
1042 | ||
1fc22eb4 JD |
1043 | return 0; |
1044 | } |