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