Commit | Line | Data |
---|---|---|
1fc22eb4 JD |
1 | /* |
2 | * Copyright (C) 2011 Julien Desfossez | |
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> | |
25 | #include <fcntl.h> | |
26 | #include <pthread.h> | |
27 | #include <popt.h> | |
28 | #include <stdlib.h> | |
29 | #include <ftw.h> | |
30 | #include <dirent.h> | |
31 | #include <ctype.h> | |
32 | #include <sys/stat.h> | |
33 | #include <unistd.h> | |
34 | #include <string.h> | |
35 | #include <errno.h> | |
36 | #include <sys/types.h> | |
37 | #include <fts.h> | |
85db4618 | 38 | #include <assert.h> |
1fc22eb4 JD |
39 | |
40 | #include "lttngtoptypes.h" | |
41 | #include "cputop.h" | |
42 | #include "iostreamtop.h" | |
43 | #include "cursesdisplay.h" | |
44 | #include "common.h" | |
45 | ||
46 | #define DEFAULT_FILE_ARRAY_SIZE 1 | |
47 | ||
48 | const char *opt_input_path; | |
49 | ||
50 | struct lttngtop *copy; | |
51 | pthread_t display_thread; | |
52 | pthread_t timer_thread; | |
53 | ||
54 | unsigned long refresh_display = 1 * NSEC_PER_SEC; | |
55 | unsigned long last_display_update = 0; | |
56 | int quit = 0; | |
57 | ||
58 | enum { | |
59 | OPT_NONE = 0, | |
60 | OPT_HELP, | |
61 | OPT_LIST, | |
62 | OPT_VERBOSE, | |
63 | OPT_DEBUG, | |
64 | OPT_NAMES, | |
65 | }; | |
66 | ||
67 | static struct poptOption long_options[] = { | |
68 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
69 | { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL }, | |
70 | { NULL, 0, 0, NULL, 0, NULL, NULL }, | |
71 | }; | |
72 | ||
73 | void *refresh_thread(void *p) | |
74 | { | |
75 | while (1) { | |
85db4618 JD |
76 | if (quit) |
77 | return NULL; | |
1fc22eb4 JD |
78 | sem_wait(&pause_sem); |
79 | sem_post(&pause_sem); | |
80 | sem_post(&timer); | |
81 | sleep(refresh_display/NSEC_PER_SEC); | |
82 | } | |
83 | } | |
84 | ||
85 | void *ncurses_display(void *p) | |
86 | { | |
87 | unsigned int current_display_index = 0; | |
88 | ||
89 | sem_wait(&bootstrap); | |
90 | init_ncurses(); | |
91 | ||
92 | while (1) { | |
93 | sem_wait(&timer); | |
94 | sem_wait(&goodtodisplay); | |
95 | sem_wait(&pause_sem); | |
96 | ||
97 | copy = g_ptr_array_index(copies, current_display_index); | |
85db4618 JD |
98 | assert(copy); |
99 | display(current_display_index++); | |
1fc22eb4 JD |
100 | |
101 | sem_post(&goodtoupdate); | |
102 | sem_post(&pause_sem); | |
103 | ||
104 | if (quit) { | |
105 | reset_ncurses(); | |
106 | pthread_exit(0); | |
107 | } | |
108 | } | |
109 | } | |
110 | ||
111 | /* | |
112 | * hook on each event to check the timestamp and refresh the display if | |
113 | * necessary | |
114 | */ | |
115 | enum bt_cb_ret check_timestamp(struct bt_ctf_event *call_data, void *private_data) | |
116 | { | |
117 | unsigned long timestamp; | |
118 | ||
119 | timestamp = bt_ctf_get_timestamp(call_data); | |
120 | if (timestamp == -1ULL) | |
121 | goto error; | |
122 | ||
123 | if (last_display_update == 0) | |
124 | last_display_update = timestamp; | |
125 | ||
126 | if (timestamp - last_display_update >= refresh_display) { | |
127 | sem_wait(&goodtoupdate); | |
128 | g_ptr_array_add(copies, get_copy_lttngtop(last_display_update, | |
129 | timestamp)); | |
130 | sem_post(&goodtodisplay); | |
131 | sem_post(&bootstrap); | |
132 | last_display_update = timestamp; | |
133 | } | |
134 | return BT_CB_OK; | |
135 | ||
136 | error: | |
137 | fprintf(stderr, "check_timestamp callback error\n"); | |
138 | return BT_CB_ERROR_STOP; | |
139 | } | |
140 | ||
141 | /* | |
142 | * get_perf_counter : get or create and return a perf_counter struct for | |
143 | * either a process or a cpu (only one of the 2 parameters mandatory) | |
144 | */ | |
145 | struct perfcounter *get_perf_counter(const char *name, struct processtop *proc, | |
146 | struct cputime *cpu) | |
147 | { | |
148 | struct perfcounter *ret, *global; | |
149 | GHashTable *table; | |
150 | ||
151 | if (proc) | |
152 | table = proc->perf; | |
153 | else if (cpu) | |
154 | table = cpu->perf; | |
155 | else | |
156 | goto error; | |
157 | ||
158 | ret = g_hash_table_lookup(table, (gpointer) name); | |
159 | if (ret) | |
160 | goto end; | |
161 | ||
559c9f86 | 162 | ret = g_new0(struct perfcounter, 1); |
1fc22eb4 JD |
163 | /* by default, make it visible in the UI */ |
164 | ret->visible = 1; | |
85db4618 | 165 | g_hash_table_insert(table, (gpointer) strdup(name), ret); |
1fc22eb4 JD |
166 | |
167 | global = g_hash_table_lookup(lttngtop.perf_list, (gpointer) name); | |
168 | if (!global) { | |
559c9f86 | 169 | global = g_new0(struct perfcounter, 1); |
1fc22eb4 JD |
170 | memcpy(global, ret, sizeof(struct perfcounter)); |
171 | /* by default, sort on the first perf context */ | |
172 | if (g_hash_table_size(lttngtop.perf_list) == 0) | |
173 | global->sort = 1; | |
85db4618 | 174 | g_hash_table_insert(lttngtop.perf_list, (gpointer) strdup(name), global); |
1fc22eb4 JD |
175 | } |
176 | ||
177 | end: | |
178 | return ret; | |
179 | ||
180 | error: | |
181 | return NULL; | |
182 | } | |
183 | ||
184 | void update_perf_value(struct processtop *proc, struct cputime *cpu, | |
185 | const char *name, int value) | |
186 | { | |
187 | struct perfcounter *cpu_perf, *process_perf; | |
188 | ||
189 | cpu_perf = get_perf_counter(name, NULL, cpu); | |
190 | if (cpu_perf->count < value) { | |
191 | process_perf = get_perf_counter(name, proc, NULL); | |
192 | process_perf->count += value - cpu_perf->count; | |
193 | cpu_perf->count = value; | |
194 | } | |
195 | } | |
196 | ||
197 | void extract_perf_counter_scope(struct bt_ctf_event *event, | |
198 | struct definition *scope, | |
199 | struct processtop *proc, | |
200 | struct cputime *cpu) | |
201 | { | |
202 | struct definition const * const *list = NULL; | |
203 | unsigned int count; | |
204 | int i, ret; | |
205 | ||
206 | if (!scope) | |
207 | goto end; | |
208 | ||
209 | ret = bt_ctf_get_field_list(event, scope, &list, &count); | |
210 | if (ret < 0) | |
211 | goto end; | |
212 | ||
213 | for (i = 0; i < count; i++) { | |
214 | const char *name = bt_ctf_field_name(list[i]); | |
215 | if (strncmp(name, "_perf_", 6) == 0) { | |
216 | int value = bt_ctf_get_uint64(list[i]); | |
217 | if (bt_ctf_field_get_error()) | |
218 | continue; | |
219 | update_perf_value(proc, cpu, name, value); | |
220 | } | |
221 | } | |
222 | ||
223 | end: | |
224 | return; | |
225 | } | |
226 | ||
227 | void update_perf_counter(struct processtop *proc, struct bt_ctf_event *event) | |
228 | { | |
1fc22eb4 | 229 | struct cputime *cpu; |
d67167cd | 230 | struct definition *scope; |
1fc22eb4 | 231 | |
d67167cd | 232 | cpu = get_cpu(get_cpu_id(event)); |
1fc22eb4 JD |
233 | |
234 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT); | |
235 | extract_perf_counter_scope(event, scope, proc, cpu); | |
236 | ||
237 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT); | |
238 | extract_perf_counter_scope(event, scope, proc, cpu); | |
239 | ||
240 | scope = bt_ctf_get_top_level_scope(event, BT_EVENT_CONTEXT); | |
241 | extract_perf_counter_scope(event, scope, proc, cpu); | |
1fc22eb4 JD |
242 | } |
243 | ||
244 | enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data, | |
245 | void *private_data) | |
246 | { | |
247 | int pid, tid, ppid; | |
248 | char *comm; | |
249 | struct processtop *parent, *child; | |
1fc22eb4 JD |
250 | unsigned long timestamp; |
251 | ||
85db4618 | 252 | /* FIXME : display nice error when missing context pid, tid, ppid and comm */ |
1fc22eb4 JD |
253 | |
254 | timestamp = bt_ctf_get_timestamp(call_data); | |
255 | if (timestamp == -1ULL) | |
256 | goto error; | |
257 | ||
1dec520a JD |
258 | pid = get_context_pid(call_data); |
259 | if (pid == -1ULL) { | |
1fc22eb4 JD |
260 | // fprintf(stderr, "Missing pid context info\n"); |
261 | goto error; | |
262 | } | |
1dec520a JD |
263 | tid = get_context_tid(call_data); |
264 | if (tid == -1ULL) { | |
1fc22eb4 JD |
265 | // fprintf(stderr, "Missing tid context info\n"); |
266 | goto error; | |
267 | } | |
1dec520a JD |
268 | ppid = get_context_ppid(call_data); |
269 | if (ppid == -1ULL) { | |
1fc22eb4 JD |
270 | // fprintf(stderr, "Missing ppid context info\n"); |
271 | goto error; | |
272 | } | |
1dec520a JD |
273 | comm = get_context_comm(call_data); |
274 | if (!comm) { | |
1fc22eb4 JD |
275 | // fprintf(stderr, "Missing procname context info\n"); |
276 | goto error; | |
277 | } | |
278 | ||
279 | /* find or create the current process */ | |
280 | child = find_process_tid(<tngtop, tid, comm); | |
281 | if (!child) | |
282 | child = add_proc(<tngtop, tid, comm, timestamp); | |
283 | update_proc(child, pid, tid, ppid, comm); | |
284 | ||
285 | if (pid != tid) { | |
286 | /* find or create the parent */ | |
287 | parent = find_process_tid(<tngtop, pid, comm); | |
288 | if (!parent) { | |
289 | parent = add_proc(<tngtop, pid, comm, timestamp); | |
290 | parent->pid = pid; | |
291 | } | |
292 | ||
293 | /* attach the parent to the current process */ | |
294 | child->threadparent = parent; | |
295 | add_thread(parent, child); | |
296 | } | |
297 | ||
298 | update_perf_counter(child, call_data); | |
299 | ||
300 | return BT_CB_OK; | |
301 | ||
302 | error: | |
303 | return BT_CB_ERROR_STOP; | |
304 | } | |
305 | ||
306 | void init_lttngtop() | |
307 | { | |
308 | copies = g_ptr_array_new(); | |
85db4618 | 309 | lttngtop.perf_list = g_hash_table_new(g_str_hash, g_str_equal); |
1fc22eb4 JD |
310 | |
311 | sem_init(&goodtodisplay, 0, 0); | |
312 | sem_init(&goodtoupdate, 0, 1); | |
313 | sem_init(&timer, 0, 1); | |
314 | sem_init(&bootstrap, 0, 0); | |
315 | sem_init(&pause_sem, 0, 1); | |
316 | sem_init(&end_trace_sem, 0, 0); | |
317 | ||
318 | lttngtop.process_table = g_ptr_array_new(); | |
319 | lttngtop.files_table = g_ptr_array_new(); | |
320 | lttngtop.cpu_table = g_ptr_array_new(); | |
321 | } | |
322 | ||
c263c4eb | 323 | void usage(FILE *fp) |
1fc22eb4 | 324 | { |
c263c4eb JD |
325 | fprintf(fp, "LTTngTop %s\n\n", VERSION); |
326 | fprintf(fp, "Usage : lttngtop /path/to/trace\n"); | |
1fc22eb4 JD |
327 | } |
328 | ||
329 | /* | |
330 | * Return 0 if caller should continue, < 0 if caller should return | |
331 | * error, > 0 if caller should exit without reporting error. | |
332 | */ | |
333 | static int parse_options(int argc, char **argv) | |
334 | { | |
335 | poptContext pc; | |
336 | int opt, ret = 0; | |
337 | ||
338 | if (argc == 1) { | |
339 | usage(stdout); | |
340 | return 1; /* exit cleanly */ | |
341 | } | |
342 | ||
343 | pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0); | |
344 | poptReadDefaultConfig(pc, 0); | |
345 | ||
346 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
347 | switch (opt) { | |
348 | case OPT_HELP: | |
349 | usage(stdout); | |
350 | ret = 1; /* exit cleanly */ | |
351 | goto end; | |
352 | case OPT_LIST: | |
353 | // list_formats(stdout); | |
354 | ret = 1; | |
355 | goto end; | |
356 | case OPT_VERBOSE: | |
357 | // babeltrace_verbose = 1; | |
358 | break; | |
359 | case OPT_DEBUG: | |
360 | // babeltrace_debug = 1; | |
361 | break; | |
362 | case OPT_NAMES: | |
363 | // opt_field_names = 1; | |
364 | break; | |
365 | default: | |
366 | ret = -EINVAL; | |
367 | goto end; | |
368 | } | |
369 | } | |
370 | ||
371 | opt_input_path = poptGetArg(pc); | |
372 | if (!opt_input_path) { | |
373 | ret = -EINVAL; | |
374 | goto end; | |
375 | } | |
376 | end: | |
377 | if (pc) { | |
378 | poptFreeContext(pc); | |
379 | } | |
380 | return ret; | |
381 | } | |
382 | ||
383 | void iter_trace(struct bt_context *bt_ctx) | |
384 | { | |
385 | struct bt_ctf_iter *iter; | |
386 | struct bt_iter_pos begin_pos; | |
387 | struct bt_ctf_event *event; | |
388 | int ret = 0; | |
389 | ||
390 | begin_pos.type = BT_SEEK_BEGIN; | |
391 | iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL); | |
392 | ||
393 | /* at each event check if we need to refresh */ | |
394 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
395 | check_timestamp, | |
396 | NULL, NULL, NULL); | |
397 | /* at each event, verify the status of the process table */ | |
398 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
399 | fix_process_table, | |
400 | NULL, NULL, NULL); | |
401 | /* to handle the scheduling events */ | |
402 | bt_ctf_iter_add_callback(iter, | |
403 | g_quark_from_static_string("sched_switch"), | |
404 | NULL, 0, handle_sched_switch, NULL, NULL, NULL); | |
405 | /* to clean up the process table */ | |
406 | bt_ctf_iter_add_callback(iter, | |
407 | g_quark_from_static_string("sched_process_free"), | |
408 | NULL, 0, handle_sched_process_free, NULL, NULL, NULL); | |
409 | ||
410 | /* for IO top */ | |
411 | bt_ctf_iter_add_callback(iter, | |
412 | g_quark_from_static_string("exit_syscall"), | |
413 | NULL, 0, handle_exit_syscall, NULL, NULL, NULL); | |
414 | bt_ctf_iter_add_callback(iter, | |
415 | g_quark_from_static_string("sys_write"), | |
416 | NULL, 0, handle_sys_write, NULL, NULL, NULL); | |
417 | bt_ctf_iter_add_callback(iter, | |
418 | g_quark_from_static_string("sys_read"), | |
419 | NULL, 0, handle_sys_read, NULL, NULL, NULL); | |
b093de8a MB |
420 | bt_ctf_iter_add_callback(iter, |
421 | g_quark_from_static_string("sys_open"), | |
422 | NULL, 0, handle_sys_open, NULL, NULL, NULL); | |
423 | ||
424 | bt_ctf_iter_add_callback(iter, | |
425 | g_quark_from_static_string("sys_close"), | |
426 | NULL, 0, handle_sys_close, NULL, NULL, NULL); | |
1fc22eb4 JD |
427 | while ((event = bt_ctf_iter_read_event(iter)) != NULL) { |
428 | ret = bt_iter_next(bt_ctf_get_iter(iter)); | |
429 | if (ret < 0) | |
430 | goto end_iter; | |
431 | } | |
432 | ||
433 | /* block until quit, we reached the end of the trace */ | |
434 | sem_wait(&end_trace_sem); | |
435 | ||
436 | end_iter: | |
437 | bt_iter_destroy(bt_ctf_get_iter(iter)); | |
438 | } | |
439 | ||
440 | /* | |
441 | * bt_context_add_traces_recursive: Open a trace recursively | |
442 | * (copied from BSD code in converter/babeltrace.c) | |
443 | * | |
444 | * Find each trace present in the subdirectory starting from the given | |
445 | * path, and add them to the context. The packet_seek parameter can be | |
446 | * NULL: this specify to use the default format packet_seek. | |
447 | * | |
448 | * Return: 0 on success, nonzero on failure. | |
449 | * Unable to open toplevel: failure. | |
450 | * Unable to open some subdirectory or file: warn and continue; | |
451 | */ | |
452 | int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path, | |
453 | const char *format_str, | |
454 | void (*packet_seek)(struct stream_pos *pos, | |
455 | size_t offset, int whence)) | |
456 | { | |
457 | FTS *tree; | |
458 | FTSENT *node; | |
459 | GArray *trace_ids; | |
460 | char lpath[PATH_MAX]; | |
461 | char * const paths[2] = { lpath, NULL }; | |
462 | int ret; | |
463 | ||
464 | /* | |
465 | * Need to copy path, because fts_open can change it. | |
466 | * It is the pointer array, not the strings, that are constant. | |
467 | */ | |
468 | strncpy(lpath, path, PATH_MAX); | |
469 | lpath[PATH_MAX - 1] = '\0'; | |
470 | ||
471 | tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0); | |
472 | if (tree == NULL) { | |
473 | fprintf(stderr, "[error] [Context] Cannot traverse \"%s\" for reading.\n", | |
474 | path); | |
475 | return -EINVAL; | |
476 | } | |
477 | ||
478 | trace_ids = g_array_new(FALSE, TRUE, sizeof(int)); | |
479 | ||
480 | while ((node = fts_read(tree))) { | |
481 | int dirfd, metafd; | |
482 | ||
483 | if (!(node->fts_info & FTS_D)) | |
484 | continue; | |
485 | ||
486 | dirfd = open(node->fts_accpath, 0); | |
487 | if (dirfd < 0) { | |
488 | fprintf(stderr, "[error] [Context] Unable to open trace " | |
489 | "directory file descriptor.\n"); | |
490 | ret = dirfd; | |
491 | goto error; | |
492 | } | |
493 | metafd = openat(dirfd, "metadata", O_RDONLY); | |
494 | if (metafd < 0) { | |
495 | ret = close(dirfd); | |
496 | if (ret < 0) { | |
497 | perror("close"); | |
498 | goto error; | |
499 | } | |
500 | } else { | |
501 | int trace_id; | |
502 | ||
503 | ret = close(metafd); | |
504 | if (ret < 0) { | |
505 | perror("close"); | |
506 | goto error; | |
507 | } | |
508 | ret = close(dirfd); | |
509 | if (ret < 0) { | |
510 | perror("close"); | |
511 | goto error; | |
512 | } | |
513 | ||
514 | trace_id = bt_context_add_trace(ctx, | |
515 | node->fts_accpath, format_str, | |
516 | packet_seek, NULL, NULL); | |
517 | if (trace_id < 0) { | |
518 | fprintf(stderr, "[error] [Context] opening trace \"%s\" from %s " | |
519 | "for reading.\n", node->fts_accpath, path); | |
520 | ret = trace_id; | |
521 | goto error; | |
522 | } | |
523 | g_array_append_val(trace_ids, trace_id); | |
524 | } | |
525 | } | |
526 | ||
527 | g_array_free(trace_ids, TRUE); | |
528 | return 0; | |
529 | ||
530 | error: | |
531 | return ret; | |
532 | } | |
533 | ||
534 | int main(int argc, char **argv) | |
535 | { | |
536 | int ret; | |
537 | struct bt_context *bt_ctx = NULL; | |
538 | ||
539 | ret = parse_options(argc, argv); | |
540 | if (ret < 0) { | |
541 | fprintf(stdout, "Error parsing options.\n\n"); | |
542 | usage(stdout); | |
543 | exit(EXIT_FAILURE); | |
544 | } else if (ret > 0) { | |
545 | exit(EXIT_SUCCESS); | |
546 | } | |
547 | ||
548 | init_lttngtop(); | |
549 | ||
550 | bt_ctx = bt_context_create(); | |
551 | ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL); | |
552 | if (ret < 0) { | |
553 | printf("[error] Opening the trace\n"); | |
554 | goto end; | |
555 | } | |
556 | ||
557 | pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL); | |
558 | pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL); | |
559 | ||
560 | iter_trace(bt_ctx); | |
561 | ||
562 | quit = 1; | |
563 | pthread_join(display_thread, NULL); | |
85db4618 | 564 | pthread_join(timer_thread, NULL); |
1fc22eb4 JD |
565 | |
566 | end: | |
85db4618 | 567 | bt_context_put(bt_ctx); |
1fc22eb4 JD |
568 | return 0; |
569 | } |