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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 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
16 | * MA 02111-1307, USA. | |
17 | */ | |
18 | ||
19 | #define _GNU_SOURCE | |
20 | #include <config.h> | |
21 | #include <stdio.h> | |
22 | #include <stdint.h> | |
23 | #include <babeltrace/babeltrace.h> | |
24 | #include <babeltrace/ctf/events.h> | |
25 | #include <babeltrace/ctf/callbacks.h> | |
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> | |
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) { | |
76 | sem_wait(&pause_sem); | |
77 | sem_post(&pause_sem); | |
78 | sem_post(&timer); | |
79 | sleep(refresh_display/NSEC_PER_SEC); | |
80 | } | |
81 | } | |
82 | ||
83 | void *ncurses_display(void *p) | |
84 | { | |
85 | unsigned int current_display_index = 0; | |
86 | ||
87 | sem_wait(&bootstrap); | |
88 | init_ncurses(); | |
89 | ||
90 | while (1) { | |
91 | sem_wait(&timer); | |
92 | sem_wait(&goodtodisplay); | |
93 | sem_wait(&pause_sem); | |
94 | ||
95 | copy = g_ptr_array_index(copies, current_display_index); | |
96 | if (copy) | |
97 | display(current_display_index++); | |
98 | ||
99 | sem_post(&goodtoupdate); | |
100 | sem_post(&pause_sem); | |
101 | ||
102 | if (quit) { | |
103 | reset_ncurses(); | |
104 | pthread_exit(0); | |
105 | } | |
106 | } | |
107 | } | |
108 | ||
109 | /* | |
110 | * hook on each event to check the timestamp and refresh the display if | |
111 | * necessary | |
112 | */ | |
113 | enum bt_cb_ret check_timestamp(struct bt_ctf_event *call_data, void *private_data) | |
114 | { | |
115 | unsigned long timestamp; | |
116 | ||
117 | timestamp = bt_ctf_get_timestamp(call_data); | |
118 | if (timestamp == -1ULL) | |
119 | goto error; | |
120 | ||
121 | if (last_display_update == 0) | |
122 | last_display_update = timestamp; | |
123 | ||
124 | if (timestamp - last_display_update >= refresh_display) { | |
125 | sem_wait(&goodtoupdate); | |
126 | g_ptr_array_add(copies, get_copy_lttngtop(last_display_update, | |
127 | timestamp)); | |
128 | sem_post(&goodtodisplay); | |
129 | sem_post(&bootstrap); | |
130 | last_display_update = timestamp; | |
131 | } | |
132 | return BT_CB_OK; | |
133 | ||
134 | error: | |
135 | fprintf(stderr, "check_timestamp callback error\n"); | |
136 | return BT_CB_ERROR_STOP; | |
137 | } | |
138 | ||
139 | /* | |
140 | * get_perf_counter : get or create and return a perf_counter struct for | |
141 | * either a process or a cpu (only one of the 2 parameters mandatory) | |
142 | */ | |
143 | struct perfcounter *get_perf_counter(const char *name, struct processtop *proc, | |
144 | struct cputime *cpu) | |
145 | { | |
146 | struct perfcounter *ret, *global; | |
147 | GHashTable *table; | |
148 | ||
149 | if (proc) | |
150 | table = proc->perf; | |
151 | else if (cpu) | |
152 | table = cpu->perf; | |
153 | else | |
154 | goto error; | |
155 | ||
156 | ret = g_hash_table_lookup(table, (gpointer) name); | |
157 | if (ret) | |
158 | goto end; | |
159 | ||
559c9f86 | 160 | ret = g_new0(struct perfcounter, 1); |
1fc22eb4 JD |
161 | /* by default, make it visible in the UI */ |
162 | ret->visible = 1; | |
163 | g_hash_table_insert(table, (gpointer) name, ret); | |
164 | ||
165 | global = g_hash_table_lookup(lttngtop.perf_list, (gpointer) name); | |
166 | if (!global) { | |
559c9f86 | 167 | global = g_new0(struct perfcounter, 1); |
1fc22eb4 JD |
168 | memcpy(global, ret, sizeof(struct perfcounter)); |
169 | /* by default, sort on the first perf context */ | |
170 | if (g_hash_table_size(lttngtop.perf_list) == 0) | |
171 | global->sort = 1; | |
172 | g_hash_table_insert(lttngtop.perf_list, (gpointer) name, global); | |
173 | } | |
174 | ||
175 | end: | |
176 | return ret; | |
177 | ||
178 | error: | |
179 | return NULL; | |
180 | } | |
181 | ||
182 | void update_perf_value(struct processtop *proc, struct cputime *cpu, | |
183 | const char *name, int value) | |
184 | { | |
185 | struct perfcounter *cpu_perf, *process_perf; | |
186 | ||
187 | cpu_perf = get_perf_counter(name, NULL, cpu); | |
188 | if (cpu_perf->count < value) { | |
189 | process_perf = get_perf_counter(name, proc, NULL); | |
190 | process_perf->count += value - cpu_perf->count; | |
191 | cpu_perf->count = value; | |
192 | } | |
193 | } | |
194 | ||
195 | void extract_perf_counter_scope(struct bt_ctf_event *event, | |
196 | struct definition *scope, | |
197 | struct processtop *proc, | |
198 | struct cputime *cpu) | |
199 | { | |
200 | struct definition const * const *list = NULL; | |
201 | unsigned int count; | |
202 | int i, ret; | |
203 | ||
204 | if (!scope) | |
205 | goto end; | |
206 | ||
207 | ret = bt_ctf_get_field_list(event, scope, &list, &count); | |
208 | if (ret < 0) | |
209 | goto end; | |
210 | ||
211 | for (i = 0; i < count; i++) { | |
212 | const char *name = bt_ctf_field_name(list[i]); | |
213 | if (strncmp(name, "_perf_", 6) == 0) { | |
214 | int value = bt_ctf_get_uint64(list[i]); | |
215 | if (bt_ctf_field_get_error()) | |
216 | continue; | |
217 | update_perf_value(proc, cpu, name, value); | |
218 | } | |
219 | } | |
220 | ||
221 | end: | |
222 | return; | |
223 | } | |
224 | ||
225 | void update_perf_counter(struct processtop *proc, struct bt_ctf_event *event) | |
226 | { | |
227 | struct definition *scope; | |
228 | uint64_t cpu_id; | |
229 | struct cputime *cpu; | |
230 | ||
231 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT); | |
232 | cpu_id = bt_ctf_get_uint64(bt_ctf_get_field(event, scope, "cpu_id")); | |
233 | if (bt_ctf_field_get_error()) { | |
234 | fprintf(stderr, "[error] get cpu_id\n"); | |
235 | goto end; | |
236 | } | |
237 | cpu = get_cpu(cpu_id); | |
238 | ||
239 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT); | |
240 | extract_perf_counter_scope(event, scope, proc, cpu); | |
241 | ||
242 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT); | |
243 | extract_perf_counter_scope(event, scope, proc, cpu); | |
244 | ||
245 | scope = bt_ctf_get_top_level_scope(event, BT_EVENT_CONTEXT); | |
246 | extract_perf_counter_scope(event, scope, proc, cpu); | |
247 | ||
248 | end: | |
249 | return; | |
250 | } | |
251 | ||
252 | enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data, | |
253 | void *private_data) | |
254 | { | |
255 | int pid, tid, ppid; | |
256 | char *comm; | |
257 | struct processtop *parent, *child; | |
258 | struct definition *scope; | |
259 | unsigned long timestamp; | |
260 | ||
261 | /* FIXME : check context pid, tid, ppid and comm */ | |
262 | ||
263 | timestamp = bt_ctf_get_timestamp(call_data); | |
264 | if (timestamp == -1ULL) | |
265 | goto error; | |
266 | ||
267 | scope = bt_ctf_get_top_level_scope(call_data, BT_STREAM_EVENT_CONTEXT); | |
268 | ||
269 | pid = bt_ctf_get_int64(bt_ctf_get_field(call_data, scope, "_pid")); | |
270 | if (bt_ctf_field_get_error()) { | |
271 | // fprintf(stderr, "Missing pid context info\n"); | |
272 | goto error; | |
273 | } | |
274 | tid = bt_ctf_get_int64(bt_ctf_get_field(call_data, scope, "_tid")); | |
275 | if (bt_ctf_field_get_error()) { | |
276 | // fprintf(stderr, "Missing tid context info\n"); | |
277 | goto error; | |
278 | } | |
279 | ppid = bt_ctf_get_int64(bt_ctf_get_field(call_data, scope, "_ppid")); | |
280 | if (bt_ctf_field_get_error()) { | |
281 | // fprintf(stderr, "Missing ppid context info\n"); | |
282 | goto error; | |
283 | } | |
284 | comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data, scope, "_procname")); | |
285 | if (bt_ctf_field_get_error()) { | |
286 | // fprintf(stderr, "Missing procname context info\n"); | |
287 | goto error; | |
288 | } | |
289 | ||
290 | /* find or create the current process */ | |
291 | child = find_process_tid(<tngtop, tid, comm); | |
292 | if (!child) | |
293 | child = add_proc(<tngtop, tid, comm, timestamp); | |
294 | update_proc(child, pid, tid, ppid, comm); | |
295 | ||
296 | if (pid != tid) { | |
297 | /* find or create the parent */ | |
298 | parent = find_process_tid(<tngtop, pid, comm); | |
299 | if (!parent) { | |
300 | parent = add_proc(<tngtop, pid, comm, timestamp); | |
301 | parent->pid = pid; | |
302 | } | |
303 | ||
304 | /* attach the parent to the current process */ | |
305 | child->threadparent = parent; | |
306 | add_thread(parent, child); | |
307 | } | |
308 | ||
309 | update_perf_counter(child, call_data); | |
310 | ||
311 | return BT_CB_OK; | |
312 | ||
313 | error: | |
314 | return BT_CB_ERROR_STOP; | |
315 | } | |
316 | ||
317 | void init_lttngtop() | |
318 | { | |
319 | copies = g_ptr_array_new(); | |
320 | lttngtop.perf_list = g_hash_table_new(g_direct_hash, g_direct_equal); | |
321 | ||
322 | sem_init(&goodtodisplay, 0, 0); | |
323 | sem_init(&goodtoupdate, 0, 1); | |
324 | sem_init(&timer, 0, 1); | |
325 | sem_init(&bootstrap, 0, 0); | |
326 | sem_init(&pause_sem, 0, 1); | |
327 | sem_init(&end_trace_sem, 0, 0); | |
328 | ||
329 | lttngtop.process_table = g_ptr_array_new(); | |
330 | lttngtop.files_table = g_ptr_array_new(); | |
331 | lttngtop.cpu_table = g_ptr_array_new(); | |
332 | } | |
333 | ||
334 | void usage(FILE *fd) | |
335 | { | |
336 | ||
337 | } | |
338 | ||
339 | /* | |
340 | * Return 0 if caller should continue, < 0 if caller should return | |
341 | * error, > 0 if caller should exit without reporting error. | |
342 | */ | |
343 | static int parse_options(int argc, char **argv) | |
344 | { | |
345 | poptContext pc; | |
346 | int opt, ret = 0; | |
347 | ||
348 | if (argc == 1) { | |
349 | usage(stdout); | |
350 | return 1; /* exit cleanly */ | |
351 | } | |
352 | ||
353 | pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0); | |
354 | poptReadDefaultConfig(pc, 0); | |
355 | ||
356 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
357 | switch (opt) { | |
358 | case OPT_HELP: | |
359 | usage(stdout); | |
360 | ret = 1; /* exit cleanly */ | |
361 | goto end; | |
362 | case OPT_LIST: | |
363 | // list_formats(stdout); | |
364 | ret = 1; | |
365 | goto end; | |
366 | case OPT_VERBOSE: | |
367 | // babeltrace_verbose = 1; | |
368 | break; | |
369 | case OPT_DEBUG: | |
370 | // babeltrace_debug = 1; | |
371 | break; | |
372 | case OPT_NAMES: | |
373 | // opt_field_names = 1; | |
374 | break; | |
375 | default: | |
376 | ret = -EINVAL; | |
377 | goto end; | |
378 | } | |
379 | } | |
380 | ||
381 | opt_input_path = poptGetArg(pc); | |
382 | if (!opt_input_path) { | |
383 | ret = -EINVAL; | |
384 | goto end; | |
385 | } | |
386 | end: | |
387 | if (pc) { | |
388 | poptFreeContext(pc); | |
389 | } | |
390 | return ret; | |
391 | } | |
392 | ||
393 | void iter_trace(struct bt_context *bt_ctx) | |
394 | { | |
395 | struct bt_ctf_iter *iter; | |
396 | struct bt_iter_pos begin_pos; | |
397 | struct bt_ctf_event *event; | |
398 | int ret = 0; | |
399 | ||
400 | begin_pos.type = BT_SEEK_BEGIN; | |
401 | iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL); | |
402 | ||
403 | /* at each event check if we need to refresh */ | |
404 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
405 | check_timestamp, | |
406 | NULL, NULL, NULL); | |
407 | /* at each event, verify the status of the process table */ | |
408 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
409 | fix_process_table, | |
410 | NULL, NULL, NULL); | |
411 | /* to handle the scheduling events */ | |
412 | bt_ctf_iter_add_callback(iter, | |
413 | g_quark_from_static_string("sched_switch"), | |
414 | NULL, 0, handle_sched_switch, NULL, NULL, NULL); | |
415 | /* to clean up the process table */ | |
416 | bt_ctf_iter_add_callback(iter, | |
417 | g_quark_from_static_string("sched_process_free"), | |
418 | NULL, 0, handle_sched_process_free, NULL, NULL, NULL); | |
419 | ||
420 | /* for IO top */ | |
421 | bt_ctf_iter_add_callback(iter, | |
422 | g_quark_from_static_string("exit_syscall"), | |
423 | NULL, 0, handle_exit_syscall, NULL, NULL, NULL); | |
424 | bt_ctf_iter_add_callback(iter, | |
425 | g_quark_from_static_string("sys_write"), | |
426 | NULL, 0, handle_sys_write, NULL, NULL, NULL); | |
427 | bt_ctf_iter_add_callback(iter, | |
428 | g_quark_from_static_string("sys_read"), | |
429 | NULL, 0, handle_sys_read, NULL, NULL, NULL); | |
430 | while ((event = bt_ctf_iter_read_event(iter)) != NULL) { | |
431 | ret = bt_iter_next(bt_ctf_get_iter(iter)); | |
432 | if (ret < 0) | |
433 | goto end_iter; | |
434 | } | |
435 | ||
436 | /* block until quit, we reached the end of the trace */ | |
437 | sem_wait(&end_trace_sem); | |
438 | ||
439 | end_iter: | |
440 | bt_iter_destroy(bt_ctf_get_iter(iter)); | |
441 | } | |
442 | ||
443 | /* | |
444 | * bt_context_add_traces_recursive: Open a trace recursively | |
445 | * (copied from BSD code in converter/babeltrace.c) | |
446 | * | |
447 | * Find each trace present in the subdirectory starting from the given | |
448 | * path, and add them to the context. The packet_seek parameter can be | |
449 | * NULL: this specify to use the default format packet_seek. | |
450 | * | |
451 | * Return: 0 on success, nonzero on failure. | |
452 | * Unable to open toplevel: failure. | |
453 | * Unable to open some subdirectory or file: warn and continue; | |
454 | */ | |
455 | int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path, | |
456 | const char *format_str, | |
457 | void (*packet_seek)(struct stream_pos *pos, | |
458 | size_t offset, int whence)) | |
459 | { | |
460 | FTS *tree; | |
461 | FTSENT *node; | |
462 | GArray *trace_ids; | |
463 | char lpath[PATH_MAX]; | |
464 | char * const paths[2] = { lpath, NULL }; | |
465 | int ret; | |
466 | ||
467 | /* | |
468 | * Need to copy path, because fts_open can change it. | |
469 | * It is the pointer array, not the strings, that are constant. | |
470 | */ | |
471 | strncpy(lpath, path, PATH_MAX); | |
472 | lpath[PATH_MAX - 1] = '\0'; | |
473 | ||
474 | tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0); | |
475 | if (tree == NULL) { | |
476 | fprintf(stderr, "[error] [Context] Cannot traverse \"%s\" for reading.\n", | |
477 | path); | |
478 | return -EINVAL; | |
479 | } | |
480 | ||
481 | trace_ids = g_array_new(FALSE, TRUE, sizeof(int)); | |
482 | ||
483 | while ((node = fts_read(tree))) { | |
484 | int dirfd, metafd; | |
485 | ||
486 | if (!(node->fts_info & FTS_D)) | |
487 | continue; | |
488 | ||
489 | dirfd = open(node->fts_accpath, 0); | |
490 | if (dirfd < 0) { | |
491 | fprintf(stderr, "[error] [Context] Unable to open trace " | |
492 | "directory file descriptor.\n"); | |
493 | ret = dirfd; | |
494 | goto error; | |
495 | } | |
496 | metafd = openat(dirfd, "metadata", O_RDONLY); | |
497 | if (metafd < 0) { | |
498 | ret = close(dirfd); | |
499 | if (ret < 0) { | |
500 | perror("close"); | |
501 | goto error; | |
502 | } | |
503 | } else { | |
504 | int trace_id; | |
505 | ||
506 | ret = close(metafd); | |
507 | if (ret < 0) { | |
508 | perror("close"); | |
509 | goto error; | |
510 | } | |
511 | ret = close(dirfd); | |
512 | if (ret < 0) { | |
513 | perror("close"); | |
514 | goto error; | |
515 | } | |
516 | ||
517 | trace_id = bt_context_add_trace(ctx, | |
518 | node->fts_accpath, format_str, | |
519 | packet_seek, NULL, NULL); | |
520 | if (trace_id < 0) { | |
521 | fprintf(stderr, "[error] [Context] opening trace \"%s\" from %s " | |
522 | "for reading.\n", node->fts_accpath, path); | |
523 | ret = trace_id; | |
524 | goto error; | |
525 | } | |
526 | g_array_append_val(trace_ids, trace_id); | |
527 | } | |
528 | } | |
529 | ||
530 | g_array_free(trace_ids, TRUE); | |
531 | return 0; | |
532 | ||
533 | error: | |
534 | return ret; | |
535 | } | |
536 | ||
537 | int main(int argc, char **argv) | |
538 | { | |
539 | int ret; | |
540 | struct bt_context *bt_ctx = NULL; | |
541 | ||
542 | ret = parse_options(argc, argv); | |
543 | if (ret < 0) { | |
544 | fprintf(stdout, "Error parsing options.\n\n"); | |
545 | usage(stdout); | |
546 | exit(EXIT_FAILURE); | |
547 | } else if (ret > 0) { | |
548 | exit(EXIT_SUCCESS); | |
549 | } | |
550 | ||
551 | init_lttngtop(); | |
552 | ||
553 | bt_ctx = bt_context_create(); | |
554 | ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL); | |
555 | if (ret < 0) { | |
556 | printf("[error] Opening the trace\n"); | |
557 | goto end; | |
558 | } | |
559 | ||
560 | pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL); | |
561 | pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL); | |
562 | ||
563 | iter_trace(bt_ctx); | |
564 | ||
565 | quit = 1; | |
566 | pthread_join(display_thread, NULL); | |
567 | ||
568 | end: | |
569 | return 0; | |
570 | } |