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 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 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 * 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 * 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 * 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 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 && args.pa_verbosity > 0) 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_PCSAMPLE: 427 PMCSTAT_PRINT_ENTRY("sample","0x%x %d %p %c", 428 ev.pl_u.pl_s.pl_pmcid, 429 ev.pl_u.pl_s.pl_pid, 430 (void *) ev.pl_u.pl_s.pl_pc, 431 ev.pl_u.pl_s.pl_usermode ? 'u' : 's'); 432 break; 433 case PMCLOG_TYPE_PMCALLOCATE: 434 PMCSTAT_PRINT_ENTRY("allocate","0x%x \"%s\" 0x%x", 435 ev.pl_u.pl_a.pl_pmcid, 436 ev.pl_u.pl_a.pl_evname, 437 ev.pl_u.pl_a.pl_flags); 438 break; 439 case PMCLOG_TYPE_PMCALLOCATEDYN: 440 PMCSTAT_PRINT_ENTRY("allocatedyn","0x%x \"%s\" 0x%x", 441 ev.pl_u.pl_ad.pl_pmcid, 442 ev.pl_u.pl_ad.pl_evname, 443 ev.pl_u.pl_ad.pl_flags); 444 break; 445 case PMCLOG_TYPE_PMCATTACH: 446 PMCSTAT_PRINT_ENTRY("attach","0x%x %d \"%s\"", 447 ev.pl_u.pl_t.pl_pmcid, 448 ev.pl_u.pl_t.pl_pid, 449 ev.pl_u.pl_t.pl_pathname); 450 break; 451 case PMCLOG_TYPE_PMCDETACH: 452 PMCSTAT_PRINT_ENTRY("detach","0x%x %d", 453 ev.pl_u.pl_d.pl_pmcid, 454 ev.pl_u.pl_d.pl_pid); 455 break; 456 case PMCLOG_TYPE_PROCCSW: 457 PMCSTAT_PRINT_ENTRY("cswval","0x%x %d %jd", 458 ev.pl_u.pl_c.pl_pmcid, 459 ev.pl_u.pl_c.pl_pid, 460 ev.pl_u.pl_c.pl_value); 461 break; 462 case PMCLOG_TYPE_PROCEXEC: 463 PMCSTAT_PRINT_ENTRY("exec","0x%x %d %p \"%s\"", 464 ev.pl_u.pl_x.pl_pmcid, 465 ev.pl_u.pl_x.pl_pid, 466 (void *) ev.pl_u.pl_x.pl_entryaddr, 467 ev.pl_u.pl_x.pl_pathname); 468 break; 469 case PMCLOG_TYPE_PROCEXIT: 470 PMCSTAT_PRINT_ENTRY("exitval","0x%x %d %jd", 471 ev.pl_u.pl_e.pl_pmcid, 472 ev.pl_u.pl_e.pl_pid, 473 ev.pl_u.pl_e.pl_value); 474 break; 475 case PMCLOG_TYPE_PROCFORK: 476 PMCSTAT_PRINT_ENTRY("fork","%d %d", 477 ev.pl_u.pl_f.pl_oldpid, 478 ev.pl_u.pl_f.pl_newpid); 479 break; 480 case PMCLOG_TYPE_USERDATA: 481 PMCSTAT_PRINT_ENTRY("userdata","0x%x", 482 ev.pl_u.pl_u.pl_userdata); 483 break; 484 case PMCLOG_TYPE_SYSEXIT: 485 PMCSTAT_PRINT_ENTRY("exit","%d", 486 ev.pl_u.pl_se.pl_pid); 487 break; 488 default: 489 fprintf(args.pa_printfile, "unknown event (type %d).\n", 490 ev.pl_type); 491 } 492 } 493 494 if (ev.pl_state == PMCLOG_EOF) 495 return (PMCSTAT_FINISHED); 496 else if (ev.pl_state == PMCLOG_REQUIRE_DATA) 497 return (PMCSTAT_RUNNING); 498 499 errx(EX_DATAERR, 500 "ERROR: event parsing failed (record %jd, offset 0x%jx).", 501 (uintmax_t) ev.pl_count + 1, ev.pl_offset); 502 /*NOTREACHED*/ 503 } 504 505 /* 506 * Public Interfaces. 507 */ 508 509 /* 510 * Process a log file in offline analysis mode. 511 */ 512 513 int 514 pmcstat_process_log(void) 515 { 516 517 /* 518 * If analysis has not been asked for, just print the log to 519 * the current output file. 520 */ 521 if (args.pa_flags & FLAG_DO_PRINT) 522 return (pmcstat_print_log()); 523 else 524 return (pmcstat_analyze_log(&args, plugins, &pmcstat_stats, pmcstat_kernproc, 525 pmcstat_mergepmc, &pmcstat_npmcs, &ps_samples_period)); 526 } 527 528 /* 529 * Refresh top display. 530 */ 531 532 static void 533 pmcstat_refresh_top(void) 534 { 535 int v_attrs; 536 float v; 537 char pmcname[40]; 538 struct pmcstat_pmcrecord *pmcpr; 539 540 /* If in pause mode do not refresh display. */ 541 if (pmcstat_pause) 542 return; 543 544 /* Wait until PMC pop in the log. */ 545 pmcpr = pmcstat_pmcindex_to_pmcr(pmcstat_pmcinfilter); 546 if (pmcpr == NULL) 547 return; 548 549 /* Format PMC name. */ 550 if (pmcstat_mergepmc) 551 snprintf(pmcname, sizeof(pmcname), "[%s]", 552 pmcstat_string_unintern(pmcpr->pr_pmcname)); 553 else 554 snprintf(pmcname, sizeof(pmcname), "%s.%d", 555 pmcstat_string_unintern(pmcpr->pr_pmcname), 556 pmcstat_pmcinfilter); 557 558 /* Format samples count. */ 559 if (ps_samples_period > 0) 560 v = (pmcpr->pr_samples * 100.0) / ps_samples_period; 561 else 562 v = 0.; 563 v_attrs = PMCSTAT_ATTRPERCENT(v); 564 565 PMCSTAT_PRINTBEGIN(); 566 PMCSTAT_PRINTW("PMC: %s Samples: %u ", 567 pmcname, 568 pmcpr->pr_samples); 569 PMCSTAT_ATTRON(v_attrs); 570 PMCSTAT_PRINTW("(%.1f%%) ", v); 571 PMCSTAT_ATTROFF(v_attrs); 572 PMCSTAT_PRINTW(", %u unresolved\n\n", 573 pmcpr->pr_dubious_frames); 574 if (plugins[args.pa_plugin].pl_topdisplay != NULL) 575 plugins[args.pa_plugin].pl_topdisplay(); 576 PMCSTAT_PRINTEND(); 577 } 578 579 /* 580 * Find the next pmc index to display. 581 */ 582 583 static void 584 pmcstat_changefilter(void) 585 { 586 int pmcin; 587 struct pmcstat_pmcrecord *pmcr; 588 589 /* 590 * Find the next merge target. 591 */ 592 if (pmcstat_mergepmc) { 593 pmcin = pmcstat_pmcinfilter; 594 595 do { 596 pmcr = pmcstat_pmcindex_to_pmcr(pmcstat_pmcinfilter); 597 if (pmcr == NULL || pmcr == pmcr->pr_merge) 598 break; 599 600 pmcstat_pmcinfilter++; 601 if (pmcstat_pmcinfilter >= pmcstat_npmcs) 602 pmcstat_pmcinfilter = 0; 603 604 } while (pmcstat_pmcinfilter != pmcin); 605 } 606 } 607 608 /* 609 * Top mode keypress. 610 */ 611 612 int 613 pmcstat_keypress_log(void) 614 { 615 int c, ret = 0; 616 WINDOW *w; 617 618 w = newwin(1, 0, 1, 0); 619 c = wgetch(w); 620 wprintw(w, "Key: %c => ", c); 621 switch (c) { 622 case 'c': 623 wprintw(w, "enter mode 'd' or 'a' => "); 624 c = wgetch(w); 625 if (c == 'd') { 626 args.pa_topmode = PMCSTAT_TOP_DELTA; 627 wprintw(w, "switching to delta mode"); 628 } else { 629 args.pa_topmode = PMCSTAT_TOP_ACCUM; 630 wprintw(w, "switching to accumulation mode"); 631 } 632 break; 633 case 'm': 634 pmcstat_mergepmc = !pmcstat_mergepmc; 635 /* 636 * Changing merge state require data reset. 637 */ 638 if (plugins[args.pa_plugin].pl_shutdown != NULL) 639 plugins[args.pa_plugin].pl_shutdown(NULL); 640 pmcstat_stats_reset(0); 641 if (plugins[args.pa_plugin].pl_init != NULL) 642 plugins[args.pa_plugin].pl_init(); 643 644 /* Update filter to be on a merge target. */ 645 pmcstat_changefilter(); 646 wprintw(w, "merge PMC %s", pmcstat_mergepmc ? "on" : "off"); 647 break; 648 case 'n': 649 /* Close current plugin. */ 650 if (plugins[args.pa_plugin].pl_shutdown != NULL) 651 plugins[args.pa_plugin].pl_shutdown(NULL); 652 653 /* Find next top display available. */ 654 do { 655 args.pa_plugin++; 656 if (plugins[args.pa_plugin].pl_name == NULL) 657 args.pa_plugin = 0; 658 } while (plugins[args.pa_plugin].pl_topdisplay == NULL); 659 660 /* Open new plugin. */ 661 pmcstat_stats_reset(0); 662 if (plugins[args.pa_plugin].pl_init != NULL) 663 plugins[args.pa_plugin].pl_init(); 664 wprintw(w, "switching to plugin %s", 665 plugins[args.pa_plugin].pl_name); 666 break; 667 case 'p': 668 pmcstat_pmcinfilter++; 669 if (pmcstat_pmcinfilter >= pmcstat_npmcs) 670 pmcstat_pmcinfilter = 0; 671 pmcstat_changefilter(); 672 wprintw(w, "switching to PMC %s.%d", 673 pmcstat_pmcindex_to_name(pmcstat_pmcinfilter), 674 pmcstat_pmcinfilter); 675 break; 676 case ' ': 677 pmcstat_pause = !pmcstat_pause; 678 if (pmcstat_pause) 679 wprintw(w, "pause => press space again to continue"); 680 break; 681 case 'q': 682 wprintw(w, "exiting..."); 683 ret = 1; 684 break; 685 default: 686 if (plugins[args.pa_plugin].pl_topkeypress != NULL) 687 if (plugins[args.pa_plugin].pl_topkeypress(c, (void *)w)) 688 ret = 1; 689 } 690 691 wrefresh(w); 692 delwin(w); 693 return ret; 694 } 695 696 697 /* 698 * Top mode display. 699 */ 700 701 void 702 pmcstat_display_log(void) 703 { 704 705 pmcstat_refresh_top(); 706 707 /* Reset everythings if delta mode. */ 708 if (args.pa_topmode == PMCSTAT_TOP_DELTA) { 709 if (plugins[args.pa_plugin].pl_shutdown != NULL) 710 plugins[args.pa_plugin].pl_shutdown(NULL); 711 pmcstat_stats_reset(0); 712 if (plugins[args.pa_plugin].pl_init != NULL) 713 plugins[args.pa_plugin].pl_init(); 714 } 715 } 716 717 /* 718 * Configure a plugins. 719 */ 720 721 void 722 pmcstat_pluginconfigure_log(char *opt) 723 { 724 725 if (strncmp(opt, "threshold=", 10) == 0) { 726 pmcstat_threshold = atof(opt+10); 727 } else { 728 if (plugins[args.pa_plugin].pl_configure != NULL) { 729 if (!plugins[args.pa_plugin].pl_configure(opt)) 730 err(EX_USAGE, 731 "ERROR: unknown option <%s>.", opt); 732 } 733 } 734 } 735 736 void 737 pmcstat_log_shutdown_logging(void) 738 { 739 740 pmcstat_shutdown_logging(&args, plugins, &pmcstat_stats); 741 } 742 743 void 744 pmcstat_log_initialize_logging(void) 745 { 746 747 pmcstat_initialize_logging(&pmcstat_kernproc, 748 &args, plugins, &pmcstat_npmcs, &pmcstat_mergepmc); 749 } 750