1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2005-2007, Joseph Koshy
5 * Copyright (c) 2007 The FreeBSD Foundation
6 * All rights reserved.
7 *
8 * Portions of this software were developed by A. Joseph Koshy under
9 * sponsorship from the FreeBSD Foundation and Google, Inc.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 /*
34 * Transform a hwpmc(4) log into human readable form, and into
35 * gprof(1) compatible profiles.
36 */
37
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
40
41 #include <sys/param.h>
42 #include <sys/endian.h>
43 #include <sys/cpuset.h>
44 #include <sys/gmon.h>
45 #include <sys/imgact_aout.h>
46 #include <sys/imgact_elf.h>
47 #include <sys/mman.h>
48 #include <sys/pmc.h>
49 #include <sys/queue.h>
50 #include <sys/socket.h>
51 #include <sys/stat.h>
52 #include <sys/wait.h>
53
54 #include <netinet/in.h>
55
56 #include <assert.h>
57 #include <curses.h>
58 #include <err.h>
59 #include <errno.h>
60 #include <fcntl.h>
61 #include <gelf.h>
62 #include <libgen.h>
63 #include <limits.h>
64 #include <netdb.h>
65 #include <pmc.h>
66 #include <pmclog.h>
67 #include <sysexits.h>
68 #include <stdint.h>
69 #include <stdio.h>
70 #include <stdlib.h>
71 #include <string.h>
72 #include <unistd.h>
73
74 #include "pmcstat.h"
75 #include "pmcstat_log.h"
76 #include "pmcstat_top.h"
77
78 /*
79 * PUBLIC INTERFACES
80 *
81 * pmcstat_initialize_logging() initialize this module, called first
82 * pmcstat_shutdown_logging() orderly shutdown, called last
83 * pmcstat_open_log() open an eventlog for processing
84 * pmcstat_process_log() print/convert an event log
85 * pmcstat_display_log() top mode display for the log
86 * pmcstat_close_log() finish processing an event log
87 *
88 * IMPLEMENTATION NOTES
89 *
90 * We correlate each 'callchain' or 'sample' entry seen in the event
91 * log back to an executable object in the system. Executable objects
92 * include:
93 * - program executables,
94 * - shared libraries loaded by the runtime loader,
95 * - dlopen()'ed objects loaded by the program,
96 * - the runtime loader itself,
97 * - the kernel and kernel modules.
98 *
99 * Each process that we know about is treated as a set of regions that
100 * map to executable objects. Processes are described by
101 * 'pmcstat_process' structures. Executable objects are tracked by
102 * 'pmcstat_image' structures. The kernel and kernel modules are
103 * common to all processes (they reside at the same virtual addresses
104 * for all processes). Individual processes can have their text
105 * segments and shared libraries loaded at process-specific locations.
106 *
107 * A given executable object can be in use by multiple processes
108 * (e.g., libc.so) and loaded at a different address in each.
109 * pmcstat_pcmap structures track per-image mappings.
110 *
111 * The sample log could have samples from multiple PMCs; we
112 * generate one 'gmon.out' profile per PMC.
113 *
114 * IMPLEMENTATION OF GMON OUTPUT
115 *
116 * Each executable object gets one 'gmon.out' profile, per PMC in
117 * use. Creation of 'gmon.out' profiles is done lazily. The
118 * 'gmon.out' profiles generated for a given sampling PMC are
119 * aggregates of all the samples for that particular executable
120 * object.
121 *
122 * IMPLEMENTATION OF SYSTEM-WIDE CALLGRAPH OUTPUT
123 *
124 * Each active pmcid has its own callgraph structure, described by a
125 * 'struct pmcstat_callgraph'. Given a process id and a list of pc
126 * values, we map each pc value to a tuple (image, symbol), where
127 * 'image' denotes an executable object and 'symbol' is the closest
128 * symbol that precedes the pc value. Each pc value in the list is
129 * also given a 'rank' that reflects its depth in the call stack.
130 */
131
132 struct pmcstat_pmcs pmcstat_pmcs = LIST_HEAD_INITIALIZER(pmcstat_pmcs);
133
134 /*
135 * All image descriptors are kept in a hash table.
136 */
137 struct pmcstat_image_hash_list pmcstat_image_hash[PMCSTAT_NHASH];
138
139 /*
140 * All process descriptors are kept in a hash table.
141 */
142 struct pmcstat_process_hash_list pmcstat_process_hash[PMCSTAT_NHASH];
143
144 struct pmcstat_stats pmcstat_stats; /* statistics */
145 static int ps_samples_period; /* samples count between top refresh. */
146
147 struct pmcstat_process *pmcstat_kernproc; /* kernel 'process' */
148
149 #include "pmcpl_gprof.h"
150 #include "pmcpl_callgraph.h"
151 #include "pmcpl_annotate.h"
152 #include "pmcpl_annotate_cg.h"
153 #include "pmcpl_calltree.h"
154
155 static struct pmc_plugins plugins[] = {
156 {
157 .pl_name = "none",
158 },
159 {
160 .pl_name = "callgraph",
161 .pl_init = pmcpl_cg_init,
162 .pl_shutdown = pmcpl_cg_shutdown,
163 .pl_process = pmcpl_cg_process,
164 .pl_topkeypress = pmcpl_cg_topkeypress,
165 .pl_topdisplay = pmcpl_cg_topdisplay
166 },
167 {
168 .pl_name = "gprof",
169 .pl_shutdown = pmcpl_gmon_shutdown,
170 .pl_process = pmcpl_gmon_process,
171 .pl_initimage = pmcpl_gmon_initimage,
172 .pl_shutdownimage = pmcpl_gmon_shutdownimage,
173 .pl_newpmc = pmcpl_gmon_newpmc
174 },
175 {
176 .pl_name = "annotate",
177 .pl_process = pmcpl_annotate_process
178 },
179 {
180 .pl_name = "calltree",
181 .pl_configure = pmcpl_ct_configure,
182 .pl_init = pmcpl_ct_init,
183 .pl_shutdown = pmcpl_ct_shutdown,
184 .pl_process = pmcpl_ct_process,
185 .pl_topkeypress = pmcpl_ct_topkeypress,
186 .pl_topdisplay = pmcpl_ct_topdisplay
187 },
188 {
189 .pl_name = "annotate_cg",
190 .pl_process = pmcpl_annotate_cg_process
191 },
192
193 {
194 .pl_name = NULL
195 }
196 };
197
198 static int pmcstat_mergepmc;
199
200 int pmcstat_pmcinfilter = 0; /* PMC filter for top mode. */
201 float pmcstat_threshold = 0.5; /* Cost filter for top mode. */
202
203 /*
204 * Prototypes
205 */
206
207 static void pmcstat_stats_reset(int _reset_global);
208
209 /*
210 * PMC count.
211 */
212 int pmcstat_npmcs;
213
214 /*
215 * PMC Top mode pause state.
216 */
217 static int pmcstat_pause;
218
219 static void
pmcstat_stats_reset(int reset_global)220 pmcstat_stats_reset(int reset_global)
221 {
222 struct pmcstat_pmcrecord *pr;
223
224 /* Flush PMCs stats. */
225 LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) {
226 pr->pr_samples = 0;
227 pr->pr_dubious_frames = 0;
228 }
229 ps_samples_period = 0;
230
231 /* Flush global stats. */
232 if (reset_global)
233 bzero(&pmcstat_stats, sizeof(struct pmcstat_stats));
234 }
235
236 /*
237 * Resolve file name and line number for the given address.
238 */
239 int
pmcstat_image_addr2line(struct pmcstat_image * image,uintfptr_t addr,char * sourcefile,size_t sourcefile_len,unsigned * sourceline,char * funcname,size_t funcname_len)240 pmcstat_image_addr2line(struct pmcstat_image *image, uintfptr_t addr,
241 char *sourcefile, size_t sourcefile_len, unsigned *sourceline,
242 char *funcname, size_t funcname_len)
243 {
244 static int addr2line_warn = 0;
245
246 char *sep, cmdline[PATH_MAX], imagepath[PATH_MAX];
247 unsigned l;
248 int fd;
249
250 if (image->pi_addr2line == NULL) {
251 /* Try default debug file location. */
252 snprintf(imagepath, sizeof(imagepath),
253 "/usr/lib/debug/%s%s.debug",
254 args.pa_fsroot,
255 pmcstat_string_unintern(image->pi_fullpath));
256 fd = open(imagepath, O_RDONLY);
257 if (fd < 0) {
258 /* Old kernel symbol path. */
259 snprintf(imagepath, sizeof(imagepath), "%s%s.symbols",
260 args.pa_fsroot,
261 pmcstat_string_unintern(image->pi_fullpath));
262 fd = open(imagepath, O_RDONLY);
263 if (fd < 0) {
264 snprintf(imagepath, sizeof(imagepath), "%s%s",
265 args.pa_fsroot,
266 pmcstat_string_unintern(
267 image->pi_fullpath));
268 }
269 }
270 if (fd >= 0)
271 close(fd);
272 /*
273 * New addr2line support recursive inline function with -i
274 * but the format does not add a marker when no more entries
275 * are available.
276 */
277 snprintf(cmdline, sizeof(cmdline), "addr2line -Cfe \"%s\"",
278 imagepath);
279 image->pi_addr2line = popen(cmdline, "r+");
280 if (image->pi_addr2line == NULL) {
281 if (!addr2line_warn) {
282 addr2line_warn = 1;
283 warnx(
284 "WARNING: addr2line is needed for source code information."
285 );
286 }
287 return (0);
288 }
289 }
290
291 if (feof(image->pi_addr2line) || ferror(image->pi_addr2line)) {
292 warnx("WARNING: addr2line pipe error");
293 pclose(image->pi_addr2line);
294 image->pi_addr2line = NULL;
295 return (0);
296 }
297
298 fprintf(image->pi_addr2line, "%p\n", (void *)addr);
299
300 if (fgets(funcname, funcname_len, image->pi_addr2line) == NULL) {
301 warnx("WARNING: addr2line function name read error");
302 return (0);
303 }
304 sep = strchr(funcname, '\n');
305 if (sep != NULL)
306 *sep = '\0';
307
308 if (fgets(sourcefile, sourcefile_len, image->pi_addr2line) == NULL) {
309 warnx("WARNING: addr2line source file read error");
310 return (0);
311 }
312 sep = strchr(sourcefile, ':');
313 if (sep == NULL) {
314 warnx("WARNING: addr2line source line separator missing");
315 return (0);
316 }
317 *sep = '\0';
318 l = atoi(sep+1);
319 if (l == 0)
320 return (0);
321 *sourceline = l;
322 return (1);
323 }
324
325 /*
326 * Given a pmcid in use, find its human-readable name.
327 */
328
329 const char *
pmcstat_pmcid_to_name(pmc_id_t pmcid)330 pmcstat_pmcid_to_name(pmc_id_t pmcid)
331 {
332 struct pmcstat_pmcrecord *pr;
333
334 LIST_FOREACH(pr, &pmcstat_pmcs, pr_next)
335 if (pr->pr_pmcid == pmcid)
336 return (pmcstat_string_unintern(pr->pr_pmcname));
337
338 return NULL;
339 }
340
341 /*
342 * Convert PMC index to name.
343 */
344
345 const char *
pmcstat_pmcindex_to_name(int pmcin)346 pmcstat_pmcindex_to_name(int pmcin)
347 {
348 struct pmcstat_pmcrecord *pr;
349
350 LIST_FOREACH(pr, &pmcstat_pmcs, pr_next)
351 if (pr->pr_pmcin == pmcin)
352 return pmcstat_string_unintern(pr->pr_pmcname);
353
354 return NULL;
355 }
356
357 /*
358 * Return PMC record with given index.
359 */
360
361 struct pmcstat_pmcrecord *
pmcstat_pmcindex_to_pmcr(int pmcin)362 pmcstat_pmcindex_to_pmcr(int pmcin)
363 {
364 struct pmcstat_pmcrecord *pr;
365
366 LIST_FOREACH(pr, &pmcstat_pmcs, pr_next)
367 if (pr->pr_pmcin == pmcin)
368 return pr;
369
370 return NULL;
371 }
372
373 /*
374 * Print log entries as text.
375 */
376
377 static int
pmcstat_print_log(void)378 pmcstat_print_log(void)
379 {
380 struct pmclog_ev ev;
381 uint32_t npc;
382
383 while (pmclog_read(args.pa_logparser, &ev) == 0) {
384 assert(ev.pl_state == PMCLOG_OK);
385 switch (ev.pl_type) {
386 case PMCLOG_TYPE_CALLCHAIN:
387 PMCSTAT_PRINT_ENTRY("callchain",
388 "%d 0x%x %d %d %c", ev.pl_u.pl_cc.pl_pid,
389 ev.pl_u.pl_cc.pl_pmcid,
390 PMC_CALLCHAIN_CPUFLAGS_TO_CPU(ev.pl_u.pl_cc. \
391 pl_cpuflags), ev.pl_u.pl_cc.pl_npc,
392 PMC_CALLCHAIN_CPUFLAGS_TO_USERMODE(ev.pl_u.pl_cc.\
393 pl_cpuflags) ? 'u' : 's');
394 for (npc = 0; npc < ev.pl_u.pl_cc.pl_npc; npc++)
395 PMCSTAT_PRINT_ENTRY("...", "%p",
396 (void *) ev.pl_u.pl_cc.pl_pc[npc]);
397 break;
398 case PMCLOG_TYPE_CLOSELOG:
399 PMCSTAT_PRINT_ENTRY("closelog",);
400 break;
401 case PMCLOG_TYPE_DROPNOTIFY:
402 PMCSTAT_PRINT_ENTRY("drop",);
403 break;
404 case PMCLOG_TYPE_INITIALIZE:
405 PMCSTAT_PRINT_ENTRY("initlog","0x%x \"%s\"",
406 ev.pl_u.pl_i.pl_version,
407 pmc_name_of_cputype(ev.pl_u.pl_i.pl_arch));
408 if ((ev.pl_u.pl_i.pl_version & 0xFF000000) !=
409 PMC_VERSION_MAJOR << 24)
410 warnx(
411 "WARNING: Log version 0x%x != expected version 0x%x.",
412 ev.pl_u.pl_i.pl_version, PMC_VERSION);
413 break;
414 case PMCLOG_TYPE_MAP_IN:
415 PMCSTAT_PRINT_ENTRY("map-in","%d %p \"%s\"",
416 ev.pl_u.pl_mi.pl_pid,
417 (void *) ev.pl_u.pl_mi.pl_start,
418 ev.pl_u.pl_mi.pl_pathname);
419 break;
420 case PMCLOG_TYPE_MAP_OUT:
421 PMCSTAT_PRINT_ENTRY("map-out","%d %p %p",
422 ev.pl_u.pl_mo.pl_pid,
423 (void *) ev.pl_u.pl_mo.pl_start,
424 (void *) ev.pl_u.pl_mo.pl_end);
425 break;
426 case PMCLOG_TYPE_PMCALLOCATE:
427 PMCSTAT_PRINT_ENTRY("allocate","0x%x \"%s\" 0x%x",
428 ev.pl_u.pl_a.pl_pmcid,
429 ev.pl_u.pl_a.pl_evname,
430 ev.pl_u.pl_a.pl_flags);
431 break;
432 case PMCLOG_TYPE_PMCALLOCATEDYN:
433 PMCSTAT_PRINT_ENTRY("allocatedyn","0x%x \"%s\" 0x%x",
434 ev.pl_u.pl_ad.pl_pmcid,
435 ev.pl_u.pl_ad.pl_evname,
436 ev.pl_u.pl_ad.pl_flags);
437 break;
438 case PMCLOG_TYPE_PMCATTACH:
439 PMCSTAT_PRINT_ENTRY("attach","0x%x %d \"%s\"",
440 ev.pl_u.pl_t.pl_pmcid,
441 ev.pl_u.pl_t.pl_pid,
442 ev.pl_u.pl_t.pl_pathname);
443 break;
444 case PMCLOG_TYPE_PMCDETACH:
445 PMCSTAT_PRINT_ENTRY("detach","0x%x %d",
446 ev.pl_u.pl_d.pl_pmcid,
447 ev.pl_u.pl_d.pl_pid);
448 break;
449 case PMCLOG_TYPE_PROCCSW:
450 PMCSTAT_PRINT_ENTRY("cswval","0x%x %d %jd",
451 ev.pl_u.pl_c.pl_pmcid,
452 ev.pl_u.pl_c.pl_pid,
453 ev.pl_u.pl_c.pl_value);
454 break;
455 case PMCLOG_TYPE_PROC_CREATE:
456 PMCSTAT_PRINT_ENTRY("create","%d %x \"%s\"",
457 ev.pl_u.pl_pc.pl_pid,
458 ev.pl_u.pl_pc.pl_flags,
459 ev.pl_u.pl_pc.pl_pcomm);
460 break;
461 case PMCLOG_TYPE_PROCEXEC:
462 PMCSTAT_PRINT_ENTRY("exec","0x%x %d %p \"%s\"",
463 ev.pl_u.pl_x.pl_pmcid,
464 ev.pl_u.pl_x.pl_pid,
465 (void *) ev.pl_u.pl_x.pl_entryaddr,
466 ev.pl_u.pl_x.pl_pathname);
467 break;
468 case PMCLOG_TYPE_PROCEXIT:
469 PMCSTAT_PRINT_ENTRY("exitval","0x%x %d %jd",
470 ev.pl_u.pl_e.pl_pmcid,
471 ev.pl_u.pl_e.pl_pid,
472 ev.pl_u.pl_e.pl_value);
473 break;
474 case PMCLOG_TYPE_PROCFORK:
475 PMCSTAT_PRINT_ENTRY("fork","%d %d",
476 ev.pl_u.pl_f.pl_oldpid,
477 ev.pl_u.pl_f.pl_newpid);
478 break;
479 case PMCLOG_TYPE_USERDATA:
480 PMCSTAT_PRINT_ENTRY("userdata","0x%x",
481 ev.pl_u.pl_u.pl_userdata);
482 break;
483 case PMCLOG_TYPE_SYSEXIT:
484 PMCSTAT_PRINT_ENTRY("exit","%d",
485 ev.pl_u.pl_se.pl_pid);
486 break;
487 case PMCLOG_TYPE_THR_CREATE:
488 PMCSTAT_PRINT_ENTRY("thr-create","%d %d %x \"%s\"",
489 ev.pl_u.pl_tc.pl_tid,
490 ev.pl_u.pl_tc.pl_pid,
491 ev.pl_u.pl_tc.pl_flags,
492 ev.pl_u.pl_tc.pl_tdname);
493 break;
494 case PMCLOG_TYPE_THR_EXIT:
495 PMCSTAT_PRINT_ENTRY("thr-exit","%d",
496 ev.pl_u.pl_tc.pl_tid);
497 break;
498 default:
499 fprintf(args.pa_printfile, "unknown event (type %d).\n",
500 ev.pl_type);
501 }
502 }
503
504 if (ev.pl_state == PMCLOG_EOF)
505 return (PMCSTAT_FINISHED);
506 else if (ev.pl_state == PMCLOG_REQUIRE_DATA)
507 return (PMCSTAT_RUNNING);
508
509 errx(EX_DATAERR,
510 "ERROR: event parsing failed (record %jd, offset 0x%jx).",
511 (uintmax_t) ev.pl_count + 1, ev.pl_offset);
512 /*NOTREACHED*/
513 }
514
515 /*
516 * Public Interfaces.
517 */
518
519 /*
520 * Process a log file in offline analysis mode.
521 */
522
523 int
pmcstat_process_log(void)524 pmcstat_process_log(void)
525 {
526
527 /*
528 * If analysis has not been asked for, just print the log to
529 * the current output file.
530 */
531 if (args.pa_flags & FLAG_DO_PRINT)
532 return (pmcstat_print_log());
533 else
534 return (pmcstat_analyze_log(&args, plugins, &pmcstat_stats, pmcstat_kernproc,
535 pmcstat_mergepmc, &pmcstat_npmcs, &ps_samples_period));
536 }
537
538 /*
539 * Refresh top display.
540 */
541
542 static void
pmcstat_refresh_top(void)543 pmcstat_refresh_top(void)
544 {
545 int v_attrs;
546 float v;
547 char pmcname[40];
548 struct pmcstat_pmcrecord *pmcpr;
549
550 /* If in pause mode do not refresh display. */
551 if (pmcstat_pause)
552 return;
553
554 /* Wait until PMC pop in the log. */
555 pmcpr = pmcstat_pmcindex_to_pmcr(pmcstat_pmcinfilter);
556 if (pmcpr == NULL)
557 return;
558
559 /* Format PMC name. */
560 if (pmcstat_mergepmc)
561 snprintf(pmcname, sizeof(pmcname), "[%s]",
562 pmcstat_string_unintern(pmcpr->pr_pmcname));
563 else
564 snprintf(pmcname, sizeof(pmcname), "%s.%d",
565 pmcstat_string_unintern(pmcpr->pr_pmcname),
566 pmcstat_pmcinfilter);
567
568 /* Format samples count. */
569 if (ps_samples_period > 0)
570 v = (pmcpr->pr_samples * 100.0) / ps_samples_period;
571 else
572 v = 0.;
573 v_attrs = PMCSTAT_ATTRPERCENT(v);
574
575 PMCSTAT_PRINTBEGIN();
576 PMCSTAT_PRINTW("PMC: %s Samples: %u ",
577 pmcname,
578 pmcpr->pr_samples);
579 PMCSTAT_ATTRON(v_attrs);
580 PMCSTAT_PRINTW("(%.1f%%) ", v);
581 PMCSTAT_ATTROFF(v_attrs);
582 PMCSTAT_PRINTW(", %u unresolved\n\n",
583 pmcpr->pr_dubious_frames);
584 if (plugins[args.pa_plugin].pl_topdisplay != NULL)
585 plugins[args.pa_plugin].pl_topdisplay();
586 PMCSTAT_PRINTEND();
587 }
588
589 /*
590 * Find the next pmc index to display.
591 */
592
593 static void
pmcstat_changefilter(void)594 pmcstat_changefilter(void)
595 {
596 int pmcin;
597 struct pmcstat_pmcrecord *pmcr;
598
599 /*
600 * Find the next merge target.
601 */
602 if (pmcstat_mergepmc) {
603 pmcin = pmcstat_pmcinfilter;
604
605 do {
606 pmcr = pmcstat_pmcindex_to_pmcr(pmcstat_pmcinfilter);
607 if (pmcr == NULL || pmcr == pmcr->pr_merge)
608 break;
609
610 pmcstat_pmcinfilter++;
611 if (pmcstat_pmcinfilter >= pmcstat_npmcs)
612 pmcstat_pmcinfilter = 0;
613
614 } while (pmcstat_pmcinfilter != pmcin);
615 }
616 }
617
618 /*
619 * Top mode keypress.
620 */
621
622 int
pmcstat_keypress_log(void)623 pmcstat_keypress_log(void)
624 {
625 int c, ret = 0;
626 WINDOW *w;
627
628 w = newwin(1, 0, 1, 0);
629 c = wgetch(w);
630 wprintw(w, "Key: %c => ", c);
631 switch (c) {
632 case 'A':
633 if (args.pa_flags & FLAG_SKIP_TOP_FN_RES)
634 args.pa_flags &= ~FLAG_SKIP_TOP_FN_RES;
635 else
636 args.pa_flags |= FLAG_SKIP_TOP_FN_RES;
637 break;
638 case 'c':
639 wprintw(w, "enter mode 'd' or 'a' => ");
640 c = wgetch(w);
641 if (c == 'd') {
642 args.pa_topmode = PMCSTAT_TOP_DELTA;
643 wprintw(w, "switching to delta mode");
644 } else {
645 args.pa_topmode = PMCSTAT_TOP_ACCUM;
646 wprintw(w, "switching to accumulation mode");
647 }
648 break;
649 case 'I':
650 if (args.pa_flags & FLAG_SHOW_OFFSET)
651 args.pa_flags &= ~FLAG_SHOW_OFFSET;
652 else
653 args.pa_flags |= FLAG_SHOW_OFFSET;
654 break;
655 case 'm':
656 pmcstat_mergepmc = !pmcstat_mergepmc;
657 /*
658 * Changing merge state require data reset.
659 */
660 if (plugins[args.pa_plugin].pl_shutdown != NULL)
661 plugins[args.pa_plugin].pl_shutdown(NULL);
662 pmcstat_stats_reset(0);
663 if (plugins[args.pa_plugin].pl_init != NULL)
664 plugins[args.pa_plugin].pl_init();
665
666 /* Update filter to be on a merge target. */
667 pmcstat_changefilter();
668 wprintw(w, "merge PMC %s", pmcstat_mergepmc ? "on" : "off");
669 break;
670 case 'n':
671 /* Close current plugin. */
672 if (plugins[args.pa_plugin].pl_shutdown != NULL)
673 plugins[args.pa_plugin].pl_shutdown(NULL);
674
675 /* Find next top display available. */
676 do {
677 args.pa_plugin++;
678 if (plugins[args.pa_plugin].pl_name == NULL)
679 args.pa_plugin = 0;
680 } while (plugins[args.pa_plugin].pl_topdisplay == NULL);
681
682 /* Open new plugin. */
683 pmcstat_stats_reset(0);
684 if (plugins[args.pa_plugin].pl_init != NULL)
685 plugins[args.pa_plugin].pl_init();
686 wprintw(w, "switching to plugin %s",
687 plugins[args.pa_plugin].pl_name);
688 break;
689 case 'p':
690 pmcstat_pmcinfilter++;
691 if (pmcstat_pmcinfilter >= pmcstat_npmcs)
692 pmcstat_pmcinfilter = 0;
693 pmcstat_changefilter();
694 wprintw(w, "switching to PMC %s.%d",
695 pmcstat_pmcindex_to_name(pmcstat_pmcinfilter),
696 pmcstat_pmcinfilter);
697 break;
698 case ' ':
699 pmcstat_pause = !pmcstat_pause;
700 if (pmcstat_pause)
701 wprintw(w, "pause => press space again to continue");
702 break;
703 case 'q':
704 wprintw(w, "exiting...");
705 ret = 1;
706 break;
707 default:
708 if (plugins[args.pa_plugin].pl_topkeypress != NULL)
709 if (plugins[args.pa_plugin].pl_topkeypress(c, (void *)w))
710 ret = 1;
711 }
712
713 wrefresh(w);
714 delwin(w);
715 return ret;
716 }
717
718
719 /*
720 * Top mode display.
721 */
722
723 void
pmcstat_display_log(void)724 pmcstat_display_log(void)
725 {
726
727 pmcstat_refresh_top();
728
729 /* Reset everythings if delta mode. */
730 if (args.pa_topmode == PMCSTAT_TOP_DELTA) {
731 if (plugins[args.pa_plugin].pl_shutdown != NULL)
732 plugins[args.pa_plugin].pl_shutdown(NULL);
733 pmcstat_stats_reset(0);
734 if (plugins[args.pa_plugin].pl_init != NULL)
735 plugins[args.pa_plugin].pl_init();
736 }
737 }
738
739 /*
740 * Configure a plugins.
741 */
742
743 void
pmcstat_pluginconfigure_log(char * opt)744 pmcstat_pluginconfigure_log(char *opt)
745 {
746
747 if (strncmp(opt, "threshold=", 10) == 0) {
748 pmcstat_threshold = atof(opt+10);
749 } else {
750 if (plugins[args.pa_plugin].pl_configure != NULL) {
751 if (!plugins[args.pa_plugin].pl_configure(opt))
752 err(EX_USAGE,
753 "ERROR: unknown option <%s>.", opt);
754 }
755 }
756 }
757
758 void
pmcstat_log_shutdown_logging(void)759 pmcstat_log_shutdown_logging(void)
760 {
761
762 pmcstat_shutdown_logging(&args, plugins, &pmcstat_stats);
763 }
764
765 void
pmcstat_log_initialize_logging(void)766 pmcstat_log_initialize_logging(void)
767 {
768
769 pmcstat_initialize_logging(&pmcstat_kernproc,
770 &args, plugins, &pmcstat_npmcs, &pmcstat_mergepmc);
771 }
772