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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 | ||
160 | ret = malloc(sizeof(struct perfcounter)); | |
161 | memset(ret, 0, sizeof(struct perfcounter)); | |
162 | /* by default, make it visible in the UI */ | |
163 | ret->visible = 1; | |
164 | g_hash_table_insert(table, (gpointer) name, ret); | |
165 | ||
166 | global = g_hash_table_lookup(lttngtop.perf_list, (gpointer) name); | |
167 | if (!global) { | |
168 | global = malloc(sizeof(struct perfcounter)); | |
169 | memset(global, 0, sizeof(struct perfcounter)); | |
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; | |
174 | g_hash_table_insert(lttngtop.perf_list, (gpointer) name, global); | |
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 | { | |
229 | struct definition *scope; | |
230 | uint64_t cpu_id; | |
231 | struct cputime *cpu; | |
232 | ||
233 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT); | |
234 | cpu_id = bt_ctf_get_uint64(bt_ctf_get_field(event, scope, "cpu_id")); | |
235 | if (bt_ctf_field_get_error()) { | |
236 | fprintf(stderr, "[error] get cpu_id\n"); | |
237 | goto end; | |
238 | } | |
239 | cpu = get_cpu(cpu_id); | |
240 | ||
241 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT); | |
242 | extract_perf_counter_scope(event, scope, proc, cpu); | |
243 | ||
244 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT); | |
245 | extract_perf_counter_scope(event, scope, proc, cpu); | |
246 | ||
247 | scope = bt_ctf_get_top_level_scope(event, BT_EVENT_CONTEXT); | |
248 | extract_perf_counter_scope(event, scope, proc, cpu); | |
249 | ||
250 | end: | |
251 | return; | |
252 | } | |
253 | ||
254 | enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data, | |
255 | void *private_data) | |
256 | { | |
257 | int pid, tid, ppid; | |
258 | char *comm; | |
259 | struct processtop *parent, *child; | |
260 | struct definition *scope; | |
261 | unsigned long timestamp; | |
262 | ||
263 | /* FIXME : check context pid, tid, ppid and comm */ | |
264 | ||
265 | timestamp = bt_ctf_get_timestamp(call_data); | |
266 | if (timestamp == -1ULL) | |
267 | goto error; | |
268 | ||
269 | scope = bt_ctf_get_top_level_scope(call_data, BT_STREAM_EVENT_CONTEXT); | |
270 | ||
271 | pid = bt_ctf_get_int64(bt_ctf_get_field(call_data, scope, "_pid")); | |
272 | if (bt_ctf_field_get_error()) { | |
273 | // fprintf(stderr, "Missing pid context info\n"); | |
274 | goto error; | |
275 | } | |
276 | tid = bt_ctf_get_int64(bt_ctf_get_field(call_data, scope, "_tid")); | |
277 | if (bt_ctf_field_get_error()) { | |
278 | // fprintf(stderr, "Missing tid context info\n"); | |
279 | goto error; | |
280 | } | |
281 | ppid = bt_ctf_get_int64(bt_ctf_get_field(call_data, scope, "_ppid")); | |
282 | if (bt_ctf_field_get_error()) { | |
283 | // fprintf(stderr, "Missing ppid context info\n"); | |
284 | goto error; | |
285 | } | |
286 | comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data, scope, "_procname")); | |
287 | if (bt_ctf_field_get_error()) { | |
288 | // fprintf(stderr, "Missing procname context info\n"); | |
289 | goto error; | |
290 | } | |
291 | ||
292 | /* find or create the current process */ | |
293 | child = find_process_tid(<tngtop, tid, comm); | |
294 | if (!child) | |
295 | child = add_proc(<tngtop, tid, comm, timestamp); | |
296 | update_proc(child, pid, tid, ppid, comm); | |
297 | ||
298 | if (pid != tid) { | |
299 | /* find or create the parent */ | |
300 | parent = find_process_tid(<tngtop, pid, comm); | |
301 | if (!parent) { | |
302 | parent = add_proc(<tngtop, pid, comm, timestamp); | |
303 | parent->pid = pid; | |
304 | } | |
305 | ||
306 | /* attach the parent to the current process */ | |
307 | child->threadparent = parent; | |
308 | add_thread(parent, child); | |
309 | } | |
310 | ||
311 | update_perf_counter(child, call_data); | |
312 | ||
313 | return BT_CB_OK; | |
314 | ||
315 | error: | |
316 | return BT_CB_ERROR_STOP; | |
317 | } | |
318 | ||
319 | void init_lttngtop() | |
320 | { | |
321 | copies = g_ptr_array_new(); | |
322 | lttngtop.perf_list = g_hash_table_new(g_direct_hash, g_direct_equal); | |
323 | ||
324 | sem_init(&goodtodisplay, 0, 0); | |
325 | sem_init(&goodtoupdate, 0, 1); | |
326 | sem_init(&timer, 0, 1); | |
327 | sem_init(&bootstrap, 0, 0); | |
328 | sem_init(&pause_sem, 0, 1); | |
329 | sem_init(&end_trace_sem, 0, 0); | |
330 | ||
331 | lttngtop.process_table = g_ptr_array_new(); | |
332 | lttngtop.files_table = g_ptr_array_new(); | |
333 | lttngtop.cpu_table = g_ptr_array_new(); | |
334 | } | |
335 | ||
336 | void usage(FILE *fd) | |
337 | { | |
338 | ||
339 | } | |
340 | ||
341 | /* | |
342 | * Return 0 if caller should continue, < 0 if caller should return | |
343 | * error, > 0 if caller should exit without reporting error. | |
344 | */ | |
345 | static int parse_options(int argc, char **argv) | |
346 | { | |
347 | poptContext pc; | |
348 | int opt, ret = 0; | |
349 | ||
350 | if (argc == 1) { | |
351 | usage(stdout); | |
352 | return 1; /* exit cleanly */ | |
353 | } | |
354 | ||
355 | pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0); | |
356 | poptReadDefaultConfig(pc, 0); | |
357 | ||
358 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
359 | switch (opt) { | |
360 | case OPT_HELP: | |
361 | usage(stdout); | |
362 | ret = 1; /* exit cleanly */ | |
363 | goto end; | |
364 | case OPT_LIST: | |
365 | // list_formats(stdout); | |
366 | ret = 1; | |
367 | goto end; | |
368 | case OPT_VERBOSE: | |
369 | // babeltrace_verbose = 1; | |
370 | break; | |
371 | case OPT_DEBUG: | |
372 | // babeltrace_debug = 1; | |
373 | break; | |
374 | case OPT_NAMES: | |
375 | // opt_field_names = 1; | |
376 | break; | |
377 | default: | |
378 | ret = -EINVAL; | |
379 | goto end; | |
380 | } | |
381 | } | |
382 | ||
383 | opt_input_path = poptGetArg(pc); | |
384 | if (!opt_input_path) { | |
385 | ret = -EINVAL; | |
386 | goto end; | |
387 | } | |
388 | end: | |
389 | if (pc) { | |
390 | poptFreeContext(pc); | |
391 | } | |
392 | return ret; | |
393 | } | |
394 | ||
395 | void iter_trace(struct bt_context *bt_ctx) | |
396 | { | |
397 | struct bt_ctf_iter *iter; | |
398 | struct bt_iter_pos begin_pos; | |
399 | struct bt_ctf_event *event; | |
400 | int ret = 0; | |
401 | ||
402 | begin_pos.type = BT_SEEK_BEGIN; | |
403 | iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL); | |
404 | ||
405 | /* at each event check if we need to refresh */ | |
406 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
407 | check_timestamp, | |
408 | NULL, NULL, NULL); | |
409 | /* at each event, verify the status of the process table */ | |
410 | bt_ctf_iter_add_callback(iter, 0, NULL, 0, | |
411 | fix_process_table, | |
412 | NULL, NULL, NULL); | |
413 | /* to handle the scheduling events */ | |
414 | bt_ctf_iter_add_callback(iter, | |
415 | g_quark_from_static_string("sched_switch"), | |
416 | NULL, 0, handle_sched_switch, NULL, NULL, NULL); | |
417 | /* to clean up the process table */ | |
418 | bt_ctf_iter_add_callback(iter, | |
419 | g_quark_from_static_string("sched_process_free"), | |
420 | NULL, 0, handle_sched_process_free, NULL, NULL, NULL); | |
421 | ||
422 | /* for IO top */ | |
423 | bt_ctf_iter_add_callback(iter, | |
424 | g_quark_from_static_string("exit_syscall"), | |
425 | NULL, 0, handle_exit_syscall, NULL, NULL, NULL); | |
426 | bt_ctf_iter_add_callback(iter, | |
427 | g_quark_from_static_string("sys_write"), | |
428 | NULL, 0, handle_sys_write, NULL, NULL, NULL); | |
429 | bt_ctf_iter_add_callback(iter, | |
430 | g_quark_from_static_string("sys_read"), | |
431 | NULL, 0, handle_sys_read, NULL, NULL, NULL); | |
432 | while ((event = bt_ctf_iter_read_event(iter)) != NULL) { | |
433 | ret = bt_iter_next(bt_ctf_get_iter(iter)); | |
434 | if (ret < 0) | |
435 | goto end_iter; | |
436 | } | |
437 | ||
438 | /* block until quit, we reached the end of the trace */ | |
439 | sem_wait(&end_trace_sem); | |
440 | ||
441 | end_iter: | |
442 | bt_iter_destroy(bt_ctf_get_iter(iter)); | |
443 | } | |
444 | ||
445 | /* | |
446 | * bt_context_add_traces_recursive: Open a trace recursively | |
447 | * (copied from BSD code in converter/babeltrace.c) | |
448 | * | |
449 | * Find each trace present in the subdirectory starting from the given | |
450 | * path, and add them to the context. The packet_seek parameter can be | |
451 | * NULL: this specify to use the default format packet_seek. | |
452 | * | |
453 | * Return: 0 on success, nonzero on failure. | |
454 | * Unable to open toplevel: failure. | |
455 | * Unable to open some subdirectory or file: warn and continue; | |
456 | */ | |
457 | int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path, | |
458 | const char *format_str, | |
459 | void (*packet_seek)(struct stream_pos *pos, | |
460 | size_t offset, int whence)) | |
461 | { | |
462 | FTS *tree; | |
463 | FTSENT *node; | |
464 | GArray *trace_ids; | |
465 | char lpath[PATH_MAX]; | |
466 | char * const paths[2] = { lpath, NULL }; | |
467 | int ret; | |
468 | ||
469 | /* | |
470 | * Need to copy path, because fts_open can change it. | |
471 | * It is the pointer array, not the strings, that are constant. | |
472 | */ | |
473 | strncpy(lpath, path, PATH_MAX); | |
474 | lpath[PATH_MAX - 1] = '\0'; | |
475 | ||
476 | tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0); | |
477 | if (tree == NULL) { | |
478 | fprintf(stderr, "[error] [Context] Cannot traverse \"%s\" for reading.\n", | |
479 | path); | |
480 | return -EINVAL; | |
481 | } | |
482 | ||
483 | trace_ids = g_array_new(FALSE, TRUE, sizeof(int)); | |
484 | ||
485 | while ((node = fts_read(tree))) { | |
486 | int dirfd, metafd; | |
487 | ||
488 | if (!(node->fts_info & FTS_D)) | |
489 | continue; | |
490 | ||
491 | dirfd = open(node->fts_accpath, 0); | |
492 | if (dirfd < 0) { | |
493 | fprintf(stderr, "[error] [Context] Unable to open trace " | |
494 | "directory file descriptor.\n"); | |
495 | ret = dirfd; | |
496 | goto error; | |
497 | } | |
498 | metafd = openat(dirfd, "metadata", O_RDONLY); | |
499 | if (metafd < 0) { | |
500 | ret = close(dirfd); | |
501 | if (ret < 0) { | |
502 | perror("close"); | |
503 | goto error; | |
504 | } | |
505 | } else { | |
506 | int trace_id; | |
507 | ||
508 | ret = close(metafd); | |
509 | if (ret < 0) { | |
510 | perror("close"); | |
511 | goto error; | |
512 | } | |
513 | ret = close(dirfd); | |
514 | if (ret < 0) { | |
515 | perror("close"); | |
516 | goto error; | |
517 | } | |
518 | ||
519 | trace_id = bt_context_add_trace(ctx, | |
520 | node->fts_accpath, format_str, | |
521 | packet_seek, NULL, NULL); | |
522 | if (trace_id < 0) { | |
523 | fprintf(stderr, "[error] [Context] opening trace \"%s\" from %s " | |
524 | "for reading.\n", node->fts_accpath, path); | |
525 | ret = trace_id; | |
526 | goto error; | |
527 | } | |
528 | g_array_append_val(trace_ids, trace_id); | |
529 | } | |
530 | } | |
531 | ||
532 | g_array_free(trace_ids, TRUE); | |
533 | return 0; | |
534 | ||
535 | error: | |
536 | return ret; | |
537 | } | |
538 | ||
539 | int main(int argc, char **argv) | |
540 | { | |
541 | int ret; | |
542 | struct bt_context *bt_ctx = NULL; | |
543 | ||
544 | ret = parse_options(argc, argv); | |
545 | if (ret < 0) { | |
546 | fprintf(stdout, "Error parsing options.\n\n"); | |
547 | usage(stdout); | |
548 | exit(EXIT_FAILURE); | |
549 | } else if (ret > 0) { | |
550 | exit(EXIT_SUCCESS); | |
551 | } | |
552 | ||
553 | init_lttngtop(); | |
554 | ||
555 | bt_ctx = bt_context_create(); | |
556 | ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL); | |
557 | if (ret < 0) { | |
558 | printf("[error] Opening the trace\n"); | |
559 | goto end; | |
560 | } | |
561 | ||
562 | pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL); | |
563 | pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL); | |
564 | ||
565 | iter_trace(bt_ctx); | |
566 | ||
567 | quit = 1; | |
568 | pthread_join(display_thread, NULL); | |
569 | ||
570 | end: | |
571 | return 0; | |
572 | } |