Reactivate header counters
[lttngtop.git] / src / lttngtop.c
CommitLineData
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>
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>
1fc22eb4
JD
40
41#include "lttngtoptypes.h"
42#include "cputop.h"
43#include "iostreamtop.h"
44#include "cursesdisplay.h"
45#include "common.h"
46
47#define DEFAULT_FILE_ARRAY_SIZE 1
48
49const char *opt_input_path;
50
51struct lttngtop *copy;
52pthread_t display_thread;
53pthread_t timer_thread;
54
55unsigned long refresh_display = 1 * NSEC_PER_SEC;
56unsigned long last_display_update = 0;
57int quit = 0;
58
59enum {
60 OPT_NONE = 0,
61 OPT_HELP,
62 OPT_LIST,
63 OPT_VERBOSE,
64 OPT_DEBUG,
65 OPT_NAMES,
66};
67
68static struct poptOption long_options[] = {
69 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
70 { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL },
71 { NULL, 0, 0, NULL, 0, NULL, NULL },
72};
73
74void *refresh_thread(void *p)
75{
76 while (1) {
85db4618
JD
77 if (quit)
78 return NULL;
1fc22eb4
JD
79 sem_wait(&pause_sem);
80 sem_post(&pause_sem);
81 sem_post(&timer);
82 sleep(refresh_display/NSEC_PER_SEC);
83 }
84}
85
86void *ncurses_display(void *p)
87{
88 unsigned int current_display_index = 0;
89
90 sem_wait(&bootstrap);
91 init_ncurses();
92
93 while (1) {
94 sem_wait(&timer);
95 sem_wait(&goodtodisplay);
96 sem_wait(&pause_sem);
97
98 copy = g_ptr_array_index(copies, current_display_index);
85db4618
JD
99 assert(copy);
100 display(current_display_index++);
1fc22eb4
JD
101
102 sem_post(&goodtoupdate);
103 sem_post(&pause_sem);
104
105 if (quit) {
106 reset_ncurses();
107 pthread_exit(0);
108 }
109 }
110}
111
112/*
113 * hook on each event to check the timestamp and refresh the display if
114 * necessary
115 */
116enum bt_cb_ret check_timestamp(struct bt_ctf_event *call_data, void *private_data)
117{
118 unsigned long timestamp;
119
120 timestamp = bt_ctf_get_timestamp(call_data);
121 if (timestamp == -1ULL)
122 goto error;
123
124 if (last_display_update == 0)
125 last_display_update = timestamp;
126
127 if (timestamp - last_display_update >= refresh_display) {
128 sem_wait(&goodtoupdate);
129 g_ptr_array_add(copies, get_copy_lttngtop(last_display_update,
130 timestamp));
131 sem_post(&goodtodisplay);
132 sem_post(&bootstrap);
133 last_display_update = timestamp;
134 }
135 return BT_CB_OK;
136
137error:
138 fprintf(stderr, "check_timestamp callback error\n");
139 return BT_CB_ERROR_STOP;
140}
141
142/*
143 * get_perf_counter : get or create and return a perf_counter struct for
144 * either a process or a cpu (only one of the 2 parameters mandatory)
145 */
146struct perfcounter *get_perf_counter(const char *name, struct processtop *proc,
147 struct cputime *cpu)
148{
149 struct perfcounter *ret, *global;
150 GHashTable *table;
151
152 if (proc)
153 table = proc->perf;
154 else if (cpu)
155 table = cpu->perf;
156 else
157 goto error;
158
159 ret = g_hash_table_lookup(table, (gpointer) name);
160 if (ret)
161 goto end;
162
559c9f86 163 ret = g_new0(struct perfcounter, 1);
1fc22eb4
JD
164 /* by default, make it visible in the UI */
165 ret->visible = 1;
85db4618 166 g_hash_table_insert(table, (gpointer) strdup(name), ret);
1fc22eb4
JD
167
168 global = g_hash_table_lookup(lttngtop.perf_list, (gpointer) name);
169 if (!global) {
559c9f86 170 global = g_new0(struct perfcounter, 1);
1fc22eb4
JD
171 memcpy(global, ret, sizeof(struct perfcounter));
172 /* by default, sort on the first perf context */
173 if (g_hash_table_size(lttngtop.perf_list) == 0)
174 global->sort = 1;
85db4618 175 g_hash_table_insert(lttngtop.perf_list, (gpointer) strdup(name), global);
1fc22eb4
JD
176 }
177
178end:
179 return ret;
180
181error:
182 return NULL;
183}
184
185void update_perf_value(struct processtop *proc, struct cputime *cpu,
186 const char *name, int value)
187{
188 struct perfcounter *cpu_perf, *process_perf;
189
190 cpu_perf = get_perf_counter(name, NULL, cpu);
191 if (cpu_perf->count < value) {
192 process_perf = get_perf_counter(name, proc, NULL);
193 process_perf->count += value - cpu_perf->count;
194 cpu_perf->count = value;
195 }
196}
197
3ba84bed
JD
198void extract_perf_counter_scope(const struct bt_ctf_event *event,
199 const struct definition *scope,
1fc22eb4
JD
200 struct processtop *proc,
201 struct cputime *cpu)
202{
203 struct definition const * const *list = NULL;
204 unsigned int count;
205 int i, ret;
206
207 if (!scope)
208 goto end;
209
210 ret = bt_ctf_get_field_list(event, scope, &list, &count);
211 if (ret < 0)
212 goto end;
213
214 for (i = 0; i < count; i++) {
215 const char *name = bt_ctf_field_name(list[i]);
6419078d 216 if (strncmp(name, "perf_", 5) == 0) {
1fc22eb4
JD
217 int value = bt_ctf_get_uint64(list[i]);
218 if (bt_ctf_field_get_error())
219 continue;
220 update_perf_value(proc, cpu, name, value);
221 }
222 }
223
224end:
225 return;
226}
227
3ba84bed 228void update_perf_counter(struct processtop *proc, const struct bt_ctf_event *event)
1fc22eb4 229{
1fc22eb4 230 struct cputime *cpu;
3ba84bed 231 const struct definition *scope;
1fc22eb4 232
d67167cd 233 cpu = get_cpu(get_cpu_id(event));
1fc22eb4
JD
234
235 scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT);
236 extract_perf_counter_scope(event, scope, proc, cpu);
237
238 scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT);
239 extract_perf_counter_scope(event, scope, proc, cpu);
240
241 scope = bt_ctf_get_top_level_scope(event, BT_EVENT_CONTEXT);
242 extract_perf_counter_scope(event, scope, proc, cpu);
1fc22eb4
JD
243}
244
245enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data,
246 void *private_data)
247{
248 int pid, tid, ppid;
249 char *comm;
250 struct processtop *parent, *child;
1fc22eb4
JD
251 unsigned long timestamp;
252
85db4618 253 /* FIXME : display nice error when missing context pid, tid, ppid and comm */
1fc22eb4
JD
254
255 timestamp = bt_ctf_get_timestamp(call_data);
256 if (timestamp == -1ULL)
257 goto error;
258
1dec520a
JD
259 pid = get_context_pid(call_data);
260 if (pid == -1ULL) {
1fc22eb4
JD
261// fprintf(stderr, "Missing pid context info\n");
262 goto error;
263 }
1dec520a
JD
264 tid = get_context_tid(call_data);
265 if (tid == -1ULL) {
1fc22eb4
JD
266// fprintf(stderr, "Missing tid context info\n");
267 goto error;
268 }
1dec520a
JD
269 ppid = get_context_ppid(call_data);
270 if (ppid == -1ULL) {
1fc22eb4
JD
271// fprintf(stderr, "Missing ppid context info\n");
272 goto error;
273 }
1dec520a
JD
274 comm = get_context_comm(call_data);
275 if (!comm) {
1fc22eb4
JD
276// fprintf(stderr, "Missing procname context info\n");
277 goto error;
278 }
279
280 /* find or create the current process */
281 child = find_process_tid(&lttngtop, tid, comm);
282 if (!child)
283 child = add_proc(&lttngtop, tid, comm, timestamp);
284 update_proc(child, pid, tid, ppid, comm);
285
286 if (pid != tid) {
287 /* find or create the parent */
288 parent = find_process_tid(&lttngtop, pid, comm);
289 if (!parent) {
290 parent = add_proc(&lttngtop, pid, comm, timestamp);
291 parent->pid = pid;
292 }
293
294 /* attach the parent to the current process */
295 child->threadparent = parent;
296 add_thread(parent, child);
297 }
298
299 update_perf_counter(child, call_data);
300
301 return BT_CB_OK;
302
303error:
304 return BT_CB_ERROR_STOP;
305}
306
307void init_lttngtop()
308{
309 copies = g_ptr_array_new();
85db4618 310 lttngtop.perf_list = g_hash_table_new(g_str_hash, g_str_equal);
1fc22eb4
JD
311
312 sem_init(&goodtodisplay, 0, 0);
313 sem_init(&goodtoupdate, 0, 1);
314 sem_init(&timer, 0, 1);
315 sem_init(&bootstrap, 0, 0);
316 sem_init(&pause_sem, 0, 1);
317 sem_init(&end_trace_sem, 0, 0);
318
e05a35a6
JD
319 reset_global_counters();
320 lttngtop.nbproc = 0;
321 lttngtop.nbthreads = 0;
322 lttngtop.nbfiles = 0;
323
1fc22eb4
JD
324 lttngtop.process_table = g_ptr_array_new();
325 lttngtop.files_table = g_ptr_array_new();
326 lttngtop.cpu_table = g_ptr_array_new();
327}
328
c263c4eb 329void usage(FILE *fp)
1fc22eb4 330{
c263c4eb
JD
331 fprintf(fp, "LTTngTop %s\n\n", VERSION);
332 fprintf(fp, "Usage : lttngtop /path/to/trace\n");
1fc22eb4
JD
333}
334
335/*
336 * Return 0 if caller should continue, < 0 if caller should return
337 * error, > 0 if caller should exit without reporting error.
338 */
339static int parse_options(int argc, char **argv)
340{
341 poptContext pc;
342 int opt, ret = 0;
343
344 if (argc == 1) {
345 usage(stdout);
346 return 1; /* exit cleanly */
347 }
348
349 pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0);
350 poptReadDefaultConfig(pc, 0);
351
352 while ((opt = poptGetNextOpt(pc)) != -1) {
353 switch (opt) {
354 case OPT_HELP:
355 usage(stdout);
356 ret = 1; /* exit cleanly */
357 goto end;
358 case OPT_LIST:
359 // list_formats(stdout);
360 ret = 1;
361 goto end;
362 case OPT_VERBOSE:
363// babeltrace_verbose = 1;
364 break;
365 case OPT_DEBUG:
366// babeltrace_debug = 1;
367 break;
368 case OPT_NAMES:
369// opt_field_names = 1;
370 break;
371 default:
372 ret = -EINVAL;
373 goto end;
374 }
375 }
376
377 opt_input_path = poptGetArg(pc);
378 if (!opt_input_path) {
379 ret = -EINVAL;
380 goto end;
381 }
382end:
383 if (pc) {
384 poptFreeContext(pc);
385 }
386 return ret;
387}
388
389void iter_trace(struct bt_context *bt_ctx)
390{
391 struct bt_ctf_iter *iter;
392 struct bt_iter_pos begin_pos;
3ba84bed 393 const struct bt_ctf_event *event;
1fc22eb4
JD
394 int ret = 0;
395
396 begin_pos.type = BT_SEEK_BEGIN;
397 iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL);
398
399 /* at each event check if we need to refresh */
400 bt_ctf_iter_add_callback(iter, 0, NULL, 0,
401 check_timestamp,
402 NULL, NULL, NULL);
403 /* at each event, verify the status of the process table */
404 bt_ctf_iter_add_callback(iter, 0, NULL, 0,
405 fix_process_table,
406 NULL, NULL, NULL);
407 /* to handle the scheduling events */
408 bt_ctf_iter_add_callback(iter,
409 g_quark_from_static_string("sched_switch"),
410 NULL, 0, handle_sched_switch, NULL, NULL, NULL);
411 /* to clean up the process table */
412 bt_ctf_iter_add_callback(iter,
413 g_quark_from_static_string("sched_process_free"),
414 NULL, 0, handle_sched_process_free, NULL, NULL, NULL);
415
416 /* for IO top */
417 bt_ctf_iter_add_callback(iter,
418 g_quark_from_static_string("exit_syscall"),
419 NULL, 0, handle_exit_syscall, NULL, NULL, NULL);
420 bt_ctf_iter_add_callback(iter,
421 g_quark_from_static_string("sys_write"),
422 NULL, 0, handle_sys_write, NULL, NULL, NULL);
423 bt_ctf_iter_add_callback(iter,
424 g_quark_from_static_string("sys_read"),
425 NULL, 0, handle_sys_read, NULL, NULL, NULL);
b093de8a
MB
426 bt_ctf_iter_add_callback(iter,
427 g_quark_from_static_string("sys_open"),
428 NULL, 0, handle_sys_open, NULL, NULL, NULL);
b093de8a
MB
429 bt_ctf_iter_add_callback(iter,
430 g_quark_from_static_string("sys_close"),
431 NULL, 0, handle_sys_close, NULL, NULL, NULL);
ceb3a221
MB
432/*
433 bt_ctf_iter_add_callback(iter,
434 g_quark_from_static_string(
435 "lttng_statedump_file_descriptor"),
436 NULL, 0, handle_statedump_file_descriptor,
437 NULL, NULL, NULL);
438*/
1fc22eb4
JD
439 while ((event = bt_ctf_iter_read_event(iter)) != NULL) {
440 ret = bt_iter_next(bt_ctf_get_iter(iter));
441 if (ret < 0)
442 goto end_iter;
443 }
444
445 /* block until quit, we reached the end of the trace */
446 sem_wait(&end_trace_sem);
447
448end_iter:
06570214 449 bt_ctf_iter_destroy(iter);
1fc22eb4
JD
450}
451
452/*
453 * bt_context_add_traces_recursive: Open a trace recursively
454 * (copied from BSD code in converter/babeltrace.c)
455 *
456 * Find each trace present in the subdirectory starting from the given
457 * path, and add them to the context. The packet_seek parameter can be
458 * NULL: this specify to use the default format packet_seek.
459 *
460 * Return: 0 on success, nonzero on failure.
461 * Unable to open toplevel: failure.
462 * Unable to open some subdirectory or file: warn and continue;
463 */
464int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path,
465 const char *format_str,
466 void (*packet_seek)(struct stream_pos *pos,
467 size_t offset, int whence))
468{
469 FTS *tree;
470 FTSENT *node;
471 GArray *trace_ids;
472 char lpath[PATH_MAX];
473 char * const paths[2] = { lpath, NULL };
474 int ret;
475
476 /*
477 * Need to copy path, because fts_open can change it.
478 * It is the pointer array, not the strings, that are constant.
479 */
480 strncpy(lpath, path, PATH_MAX);
481 lpath[PATH_MAX - 1] = '\0';
482
483 tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0);
484 if (tree == NULL) {
485 fprintf(stderr, "[error] [Context] Cannot traverse \"%s\" for reading.\n",
486 path);
487 return -EINVAL;
488 }
489
490 trace_ids = g_array_new(FALSE, TRUE, sizeof(int));
491
492 while ((node = fts_read(tree))) {
493 int dirfd, metafd;
494
495 if (!(node->fts_info & FTS_D))
496 continue;
497
498 dirfd = open(node->fts_accpath, 0);
499 if (dirfd < 0) {
500 fprintf(stderr, "[error] [Context] Unable to open trace "
501 "directory file descriptor.\n");
502 ret = dirfd;
503 goto error;
504 }
505 metafd = openat(dirfd, "metadata", O_RDONLY);
506 if (metafd < 0) {
507 ret = close(dirfd);
508 if (ret < 0) {
509 perror("close");
510 goto error;
511 }
512 } else {
513 int trace_id;
514
515 ret = close(metafd);
516 if (ret < 0) {
517 perror("close");
518 goto error;
519 }
520 ret = close(dirfd);
521 if (ret < 0) {
522 perror("close");
523 goto error;
524 }
525
526 trace_id = bt_context_add_trace(ctx,
527 node->fts_accpath, format_str,
528 packet_seek, NULL, NULL);
529 if (trace_id < 0) {
530 fprintf(stderr, "[error] [Context] opening trace \"%s\" from %s "
531 "for reading.\n", node->fts_accpath, path);
532 ret = trace_id;
533 goto error;
534 }
535 g_array_append_val(trace_ids, trace_id);
536 }
537 }
538
539 g_array_free(trace_ids, TRUE);
540 return 0;
541
542error:
543 return ret;
544}
545
546int main(int argc, char **argv)
547{
548 int ret;
549 struct bt_context *bt_ctx = NULL;
550
551 ret = parse_options(argc, argv);
552 if (ret < 0) {
553 fprintf(stdout, "Error parsing options.\n\n");
554 usage(stdout);
555 exit(EXIT_FAILURE);
556 } else if (ret > 0) {
557 exit(EXIT_SUCCESS);
558 }
559
560 init_lttngtop();
561
562 bt_ctx = bt_context_create();
563 ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL);
564 if (ret < 0) {
565 printf("[error] Opening the trace\n");
566 goto end;
567 }
568
569 pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL);
570 pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL);
571
572 iter_trace(bt_ctx);
573
574 quit = 1;
575 pthread_join(display_thread, NULL);
85db4618 576 pthread_join(timer_thread, NULL);
1fc22eb4
JD
577
578end:
85db4618 579 bt_context_put(bt_ctx);
1fc22eb4
JD
580 return 0;
581}
This page took 0.078379 seconds and 4 git commands to generate.