pmcstat.c revision 226986
1145256Sjkoshy/*- 2180148Sjkoshy * Copyright (c) 2003-2008, Joseph Koshy 3174396Sjkoshy * Copyright (c) 2007 The FreeBSD Foundation 4145256Sjkoshy * All rights reserved. 5145256Sjkoshy * 6174396Sjkoshy * Portions of this software were developed by A. Joseph Koshy under 7174396Sjkoshy * sponsorship from the FreeBSD Foundation and Google, Inc. 8174396Sjkoshy * 9145256Sjkoshy * Redistribution and use in source and binary forms, with or without 10145256Sjkoshy * modification, are permitted provided that the following conditions 11145256Sjkoshy * are met: 12145256Sjkoshy * 1. Redistributions of source code must retain the above copyright 13145256Sjkoshy * notice, this list of conditions and the following disclaimer. 14145256Sjkoshy * 2. Redistributions in binary form must reproduce the above copyright 15145256Sjkoshy * notice, this list of conditions and the following disclaimer in the 16145256Sjkoshy * documentation and/or other materials provided with the distribution. 17145256Sjkoshy * 18145256Sjkoshy * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19145256Sjkoshy * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20145256Sjkoshy * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21145256Sjkoshy * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22145256Sjkoshy * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23145256Sjkoshy * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24145256Sjkoshy * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25145256Sjkoshy * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26145256Sjkoshy * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27145256Sjkoshy * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28145256Sjkoshy * SUCH DAMAGE. 29145256Sjkoshy */ 30145256Sjkoshy 31145256Sjkoshy#include <sys/cdefs.h> 32145256Sjkoshy__FBSDID("$FreeBSD: head/usr.sbin/pmcstat/pmcstat.c 226986 2011-11-01 09:28:47Z fabient $"); 33145256Sjkoshy 34224698Sattilio#include <sys/param.h> 35224698Sattilio#include <sys/cpuset.h> 36145256Sjkoshy#include <sys/event.h> 37145256Sjkoshy#include <sys/queue.h> 38147708Sjkoshy#include <sys/socket.h> 39147708Sjkoshy#include <sys/stat.h> 40168949Sjkoshy#include <sys/sysctl.h> 41145256Sjkoshy#include <sys/time.h> 42145256Sjkoshy#include <sys/ttycom.h> 43169069Sjkoshy#include <sys/user.h> 44145256Sjkoshy#include <sys/wait.h> 45145256Sjkoshy 46145256Sjkoshy#include <assert.h> 47203790Sfabient#include <curses.h> 48145256Sjkoshy#include <err.h> 49145256Sjkoshy#include <errno.h> 50145256Sjkoshy#include <fcntl.h> 51169069Sjkoshy#include <kvm.h> 52157144Sjkoshy#include <libgen.h> 53145256Sjkoshy#include <limits.h> 54145256Sjkoshy#include <math.h> 55145256Sjkoshy#include <pmc.h> 56147191Sjkoshy#include <pmclog.h> 57169069Sjkoshy#include <regex.h> 58145256Sjkoshy#include <signal.h> 59145256Sjkoshy#include <stdarg.h> 60147708Sjkoshy#include <stdint.h> 61145256Sjkoshy#include <stdio.h> 62145256Sjkoshy#include <stdlib.h> 63145256Sjkoshy#include <string.h> 64145256Sjkoshy#include <sysexits.h> 65145256Sjkoshy#include <unistd.h> 66145256Sjkoshy 67147708Sjkoshy#include "pmcstat.h" 68147708Sjkoshy 69147191Sjkoshy/* 70147191Sjkoshy * A given invocation of pmcstat(8) can manage multiple PMCs of both 71147191Sjkoshy * the system-wide and per-process variety. Each of these could be in 72147191Sjkoshy * 'counting mode' or in 'sampling mode'. 73147191Sjkoshy * 74147191Sjkoshy * For 'counting mode' PMCs, pmcstat(8) will periodically issue a 75147191Sjkoshy * pmc_read() at the configured time interval and print out the value 76147191Sjkoshy * of the requested PMCs. 77147191Sjkoshy * 78147191Sjkoshy * For 'sampling mode' PMCs it can log to a file for offline analysis, 79147191Sjkoshy * or can analyse sampling data "on the fly", either by converting 80147191Sjkoshy * samples to printed textual form or by creating gprof(1) compatible 81147191Sjkoshy * profiles, one per program executed. When creating gprof(1) 82147191Sjkoshy * profiles it can optionally merge entries from multiple processes 83147191Sjkoshy * for a given executable into a single profile file. 84168949Sjkoshy * 85168949Sjkoshy * pmcstat(8) can also execute a command line and attach PMCs to the 86168949Sjkoshy * resulting child process. The protocol used is as follows: 87168949Sjkoshy * 88168949Sjkoshy * - parent creates a socketpair for two way communication and 89168949Sjkoshy * fork()s. 90168949Sjkoshy * - subsequently: 91168949Sjkoshy * 92168949Sjkoshy * /Parent/ /Child/ 93168949Sjkoshy * 94168949Sjkoshy * - Wait for childs token. 95168949Sjkoshy * - Sends token. 96168949Sjkoshy * - Awaits signal to start. 97168949Sjkoshy * - Attaches PMCs to the child's pid 98168949Sjkoshy * and starts them. Sets up 99168949Sjkoshy * monitoring for the child. 100168949Sjkoshy * - Signals child to start. 101168949Sjkoshy * - Recieves signal, attempts exec(). 102168949Sjkoshy * 103168949Sjkoshy * After this point normal processing can happen. 104147191Sjkoshy */ 105147191Sjkoshy 106147708Sjkoshy/* Globals */ 107145256Sjkoshy 108145256Sjkoshyint pmcstat_interrupt = 0; 109145256Sjkoshyint pmcstat_displayheight = DEFAULT_DISPLAY_HEIGHT; 110203790Sfabientint pmcstat_displaywidth = DEFAULT_DISPLAY_WIDTH; 111168949Sjkoshyint pmcstat_sockpair[NSOCKPAIRFD]; 112145256Sjkoshyint pmcstat_kq; 113169069Sjkoshykvm_t *pmcstat_kvm; 114169069Sjkoshystruct kinfo_proc *pmcstat_plist; 115203790Sfabientstruct pmcstat_args args; 116145256Sjkoshy 117224698Sattiliostatic void 118224698Sattiliopmcstat_clone_event_descriptor(struct pmcstat_ev *ev, const cpuset_t *cpumask) 119224698Sattilio{ 120224698Sattilio int cpu, mcpu; 121224698Sattilio struct pmcstat_ev *ev_clone; 122224698Sattilio 123224698Sattilio mcpu = sizeof(*cpumask) * NBBY; 124224698Sattilio for (cpu = 0; cpu < mcpu; cpu++) { 125224698Sattilio if (!CPU_ISSET(cpu, cpumask)) 126224698Sattilio continue; 127224698Sattilio 128224698Sattilio if ((ev_clone = malloc(sizeof(*ev_clone))) == NULL) 129224698Sattilio errx(EX_SOFTWARE, "ERROR: Out of memory"); 130224698Sattilio (void) memset(ev_clone, 0, sizeof(*ev_clone)); 131224698Sattilio 132224698Sattilio ev_clone->ev_count = ev->ev_count; 133224698Sattilio ev_clone->ev_cpu = cpu; 134224698Sattilio ev_clone->ev_cumulative = ev->ev_cumulative; 135224698Sattilio ev_clone->ev_flags = ev->ev_flags; 136224698Sattilio ev_clone->ev_mode = ev->ev_mode; 137224698Sattilio ev_clone->ev_name = strdup(ev->ev_name); 138224698Sattilio ev_clone->ev_pmcid = ev->ev_pmcid; 139224698Sattilio ev_clone->ev_saved = ev->ev_saved; 140224698Sattilio ev_clone->ev_spec = strdup(ev->ev_spec); 141224698Sattilio 142224698Sattilio STAILQ_INSERT_TAIL(&args.pa_events, ev_clone, ev_next); 143224698Sattilio } 144224698Sattilio} 145224698Sattilio 146224698Sattiliostatic void 147224698Sattiliopmcstat_get_cpumask(const char *cpuspec, cpuset_t *cpumask) 148224698Sattilio{ 149224698Sattilio int cpu; 150224698Sattilio const char *s; 151224698Sattilio char *end; 152224698Sattilio 153224698Sattilio CPU_ZERO(cpumask); 154224698Sattilio s = cpuspec; 155224698Sattilio 156224698Sattilio do { 157224698Sattilio cpu = strtol(s, &end, 0); 158224698Sattilio if (cpu < 0 || end == s) 159224698Sattilio errx(EX_USAGE, "ERROR: Illegal CPU specification " 160224698Sattilio "\"%s\".", cpuspec); 161224698Sattilio CPU_SET(cpu, cpumask); 162224698Sattilio s = end + strspn(end, ", \t"); 163224698Sattilio } while (*s); 164224698Sattilio} 165224698Sattilio 166168949Sjkoshyvoid 167203790Sfabientpmcstat_attach_pmcs(void) 168168949Sjkoshy{ 169168949Sjkoshy struct pmcstat_ev *ev; 170169069Sjkoshy struct pmcstat_target *pt; 171169069Sjkoshy int count; 172145256Sjkoshy 173169069Sjkoshy /* Attach all process PMCs to target processes. */ 174169069Sjkoshy count = 0; 175203790Sfabient STAILQ_FOREACH(ev, &args.pa_events, ev_next) { 176169069Sjkoshy if (PMC_IS_SYSTEM_MODE(ev->ev_mode)) 177169069Sjkoshy continue; 178203790Sfabient SLIST_FOREACH(pt, &args.pa_targets, pt_next) 179169069Sjkoshy if (pmc_attach(ev->ev_pmcid, pt->pt_pid) == 0) 180169069Sjkoshy count++; 181169069Sjkoshy else if (errno != ESRCH) 182169069Sjkoshy err(EX_OSERR, "ERROR: cannot attach pmc " 183169069Sjkoshy "\"%s\" to process %d", ev->ev_name, 184169069Sjkoshy (int) pt->pt_pid); 185169069Sjkoshy } 186168949Sjkoshy 187169069Sjkoshy if (count == 0) 188169069Sjkoshy errx(EX_DATAERR, "ERROR: No processes were attached to."); 189168949Sjkoshy} 190168949Sjkoshy 191168949Sjkoshy 192145256Sjkoshyvoid 193203790Sfabientpmcstat_cleanup(void) 194145256Sjkoshy{ 195145256Sjkoshy struct pmcstat_ev *ev, *tmp; 196145256Sjkoshy 197145256Sjkoshy /* release allocated PMCs. */ 198203790Sfabient STAILQ_FOREACH_SAFE(ev, &args.pa_events, ev_next, tmp) 199145256Sjkoshy if (ev->ev_pmcid != PMC_ID_INVALID) { 200185079Sjkoshy if (pmc_stop(ev->ev_pmcid) < 0) 201185079Sjkoshy err(EX_OSERR, "ERROR: cannot stop pmc 0x%x " 202185079Sjkoshy "\"%s\"", ev->ev_pmcid, ev->ev_name); 203145256Sjkoshy if (pmc_release(ev->ev_pmcid) < 0) 204145256Sjkoshy err(EX_OSERR, "ERROR: cannot release pmc " 205147191Sjkoshy "0x%x \"%s\"", ev->ev_pmcid, ev->ev_name); 206145256Sjkoshy free(ev->ev_name); 207145256Sjkoshy free(ev->ev_spec); 208203790Sfabient STAILQ_REMOVE(&args.pa_events, ev, pmcstat_ev, ev_next); 209145256Sjkoshy free(ev); 210145256Sjkoshy } 211147191Sjkoshy 212147863Sjkoshy /* de-configure the log file if present. */ 213203790Sfabient if (args.pa_flags & (FLAG_HAS_PIPE | FLAG_HAS_OUTPUT_LOGFILE)) 214147863Sjkoshy (void) pmc_configure_logfile(-1); 215147863Sjkoshy 216203790Sfabient if (args.pa_logparser) { 217203790Sfabient pmclog_close(args.pa_logparser); 218203790Sfabient args.pa_logparser = NULL; 219147191Sjkoshy } 220147708Sjkoshy 221210794Sfabient pmcstat_shutdown_logging(); 222145256Sjkoshy} 223145256Sjkoshy 224145256Sjkoshyvoid 225203790Sfabientpmcstat_create_process(void) 226168949Sjkoshy{ 227168949Sjkoshy char token; 228169069Sjkoshy pid_t pid; 229168949Sjkoshy struct kevent kev; 230169069Sjkoshy struct pmcstat_target *pt; 231168949Sjkoshy 232168949Sjkoshy if (socketpair(AF_UNIX, SOCK_STREAM, 0, pmcstat_sockpair) < 0) 233168949Sjkoshy err(EX_OSERR, "ERROR: cannot create socket pair"); 234168949Sjkoshy 235169069Sjkoshy switch (pid = fork()) { 236168949Sjkoshy case -1: 237168949Sjkoshy err(EX_OSERR, "ERROR: cannot fork"); 238168949Sjkoshy /*NOTREACHED*/ 239168949Sjkoshy 240168949Sjkoshy case 0: /* child */ 241168949Sjkoshy (void) close(pmcstat_sockpair[PARENTSOCKET]); 242168949Sjkoshy 243168949Sjkoshy /* Write a token to tell our parent we've started executing. */ 244168949Sjkoshy if (write(pmcstat_sockpair[CHILDSOCKET], "+", 1) != 1) 245168949Sjkoshy err(EX_OSERR, "ERROR (child): cannot write token"); 246168949Sjkoshy 247168949Sjkoshy /* Wait for our parent to signal us to start. */ 248168949Sjkoshy if (read(pmcstat_sockpair[CHILDSOCKET], &token, 1) < 0) 249168949Sjkoshy err(EX_OSERR, "ERROR (child): cannot read token"); 250168949Sjkoshy (void) close(pmcstat_sockpair[CHILDSOCKET]); 251168949Sjkoshy 252168949Sjkoshy /* exec() the program requested */ 253203790Sfabient execvp(*args.pa_argv, args.pa_argv); 254168949Sjkoshy /* and if that fails, notify the parent */ 255168949Sjkoshy kill(getppid(), SIGCHLD); 256203790Sfabient err(EX_OSERR, "ERROR: execvp \"%s\" failed", *args.pa_argv); 257168949Sjkoshy /*NOTREACHED*/ 258168949Sjkoshy 259168949Sjkoshy default: /* parent */ 260168949Sjkoshy (void) close(pmcstat_sockpair[CHILDSOCKET]); 261168949Sjkoshy break; 262168949Sjkoshy } 263168949Sjkoshy 264168949Sjkoshy /* Ask to be notified via a kevent when the target process exits. */ 265169069Sjkoshy EV_SET(&kev, pid, EVFILT_PROC, EV_ADD|EV_ONESHOT, NOTE_EXIT, 0, 266168949Sjkoshy NULL); 267168949Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 268169069Sjkoshy err(EX_OSERR, "ERROR: cannot monitor child process %d", pid); 269168949Sjkoshy 270169069Sjkoshy if ((pt = malloc(sizeof(*pt))) == NULL) 271169069Sjkoshy errx(EX_SOFTWARE, "ERROR: Out of memory."); 272169069Sjkoshy 273169069Sjkoshy pt->pt_pid = pid; 274203790Sfabient SLIST_INSERT_HEAD(&args.pa_targets, pt, pt_next); 275169069Sjkoshy 276168949Sjkoshy /* Wait for the child to signal that its ready to go. */ 277168949Sjkoshy if (read(pmcstat_sockpair[PARENTSOCKET], &token, 1) < 0) 278168949Sjkoshy err(EX_OSERR, "ERROR (parent): cannot read token"); 279168949Sjkoshy 280168949Sjkoshy return; 281168949Sjkoshy} 282168949Sjkoshy 283169069Sjkoshyvoid 284203790Sfabientpmcstat_find_targets(const char *spec) 285169069Sjkoshy{ 286169069Sjkoshy int n, nproc, pid, rv; 287169069Sjkoshy struct pmcstat_target *pt; 288169069Sjkoshy char errbuf[_POSIX2_LINE_MAX], *end; 289169069Sjkoshy static struct kinfo_proc *kp; 290169069Sjkoshy regex_t reg; 291169069Sjkoshy regmatch_t regmatch; 292169069Sjkoshy 293169069Sjkoshy /* First check if we've been given a process id. */ 294169069Sjkoshy pid = strtol(spec, &end, 0); 295169069Sjkoshy if (end != spec && pid >= 0) { 296169069Sjkoshy if ((pt = malloc(sizeof(*pt))) == NULL) 297169069Sjkoshy goto outofmemory; 298169069Sjkoshy pt->pt_pid = pid; 299203790Sfabient SLIST_INSERT_HEAD(&args.pa_targets, pt, pt_next); 300169069Sjkoshy return; 301169069Sjkoshy } 302169069Sjkoshy 303169069Sjkoshy /* Otherwise treat arg as a regular expression naming processes. */ 304169069Sjkoshy if (pmcstat_kvm == NULL) { 305169069Sjkoshy if ((pmcstat_kvm = kvm_openfiles(NULL, "/dev/null", NULL, 0, 306169069Sjkoshy errbuf)) == NULL) 307169069Sjkoshy err(EX_OSERR, "ERROR: Cannot open kernel \"%s\"", 308169069Sjkoshy errbuf); 309169069Sjkoshy if ((pmcstat_plist = kvm_getprocs(pmcstat_kvm, KERN_PROC_PROC, 310169069Sjkoshy 0, &nproc)) == NULL) 311169069Sjkoshy err(EX_OSERR, "ERROR: Cannot get process list: %s", 312169069Sjkoshy kvm_geterr(pmcstat_kvm)); 313208858Sfabient } else 314208858Sfabient nproc = 0; 315169069Sjkoshy 316169069Sjkoshy if ((rv = regcomp(®, spec, REG_EXTENDED|REG_NOSUB)) != 0) { 317169069Sjkoshy regerror(rv, ®, errbuf, sizeof(errbuf)); 318169069Sjkoshy err(EX_DATAERR, "ERROR: Failed to compile regex \"%s\": %s", 319169069Sjkoshy spec, errbuf); 320169069Sjkoshy } 321169069Sjkoshy 322169069Sjkoshy for (n = 0, kp = pmcstat_plist; n < nproc; n++, kp++) { 323169069Sjkoshy if ((rv = regexec(®, kp->ki_comm, 1, ®match, 0)) == 0) { 324169069Sjkoshy if ((pt = malloc(sizeof(*pt))) == NULL) 325169069Sjkoshy goto outofmemory; 326169069Sjkoshy pt->pt_pid = kp->ki_pid; 327203790Sfabient SLIST_INSERT_HEAD(&args.pa_targets, pt, pt_next); 328169069Sjkoshy } else if (rv != REG_NOMATCH) { 329169069Sjkoshy regerror(rv, ®, errbuf, sizeof(errbuf)); 330169069Sjkoshy errx(EX_SOFTWARE, "ERROR: Regex evalation failed: %s", 331169069Sjkoshy errbuf); 332169069Sjkoshy } 333169069Sjkoshy } 334169069Sjkoshy 335169069Sjkoshy regfree(®); 336169069Sjkoshy 337169069Sjkoshy return; 338169069Sjkoshy 339169069Sjkoshy outofmemory: 340169069Sjkoshy errx(EX_SOFTWARE, "Out of memory."); 341169069Sjkoshy /*NOTREACHED*/ 342169069Sjkoshy} 343169069Sjkoshy 344168949Sjkoshyvoid 345203790Sfabientpmcstat_kill_process(void) 346169069Sjkoshy{ 347169069Sjkoshy struct pmcstat_target *pt; 348169069Sjkoshy 349203790Sfabient assert(args.pa_flags & FLAG_HAS_COMMANDLINE); 350169069Sjkoshy 351169069Sjkoshy /* 352169069Sjkoshy * If a command line was specified, it would be the very first 353169069Sjkoshy * in the list, before any other processes specified by -t. 354169069Sjkoshy */ 355203790Sfabient pt = SLIST_FIRST(&args.pa_targets); 356169069Sjkoshy assert(pt != NULL); 357169069Sjkoshy 358169069Sjkoshy if (kill(pt->pt_pid, SIGINT) != 0) 359169069Sjkoshy err(EX_OSERR, "ERROR: cannot signal child process"); 360169069Sjkoshy} 361169069Sjkoshy 362169069Sjkoshyvoid 363203790Sfabientpmcstat_start_pmcs(void) 364145256Sjkoshy{ 365145256Sjkoshy struct pmcstat_ev *ev; 366145256Sjkoshy 367169069Sjkoshy STAILQ_FOREACH(ev, &args.pa_events, ev_next) { 368145256Sjkoshy 369145256Sjkoshy assert(ev->ev_pmcid != PMC_ID_INVALID); 370145256Sjkoshy 371145256Sjkoshy if (pmc_start(ev->ev_pmcid) < 0) { 372147191Sjkoshy warn("ERROR: Cannot start pmc 0x%x \"%s\"", 373145256Sjkoshy ev->ev_pmcid, ev->ev_name); 374203790Sfabient pmcstat_cleanup(); 375147191Sjkoshy exit(EX_OSERR); 376145256Sjkoshy } 377145256Sjkoshy } 378145256Sjkoshy 379145256Sjkoshy} 380145256Sjkoshy 381145256Sjkoshyvoid 382203790Sfabientpmcstat_print_headers(void) 383145256Sjkoshy{ 384145256Sjkoshy struct pmcstat_ev *ev; 385168949Sjkoshy int c, w; 386145256Sjkoshy 387203790Sfabient (void) fprintf(args.pa_printfile, PRINT_HEADER_PREFIX); 388145256Sjkoshy 389203790Sfabient STAILQ_FOREACH(ev, &args.pa_events, ev_next) { 390145256Sjkoshy if (PMC_IS_SAMPLING_MODE(ev->ev_mode)) 391145256Sjkoshy continue; 392145256Sjkoshy 393145256Sjkoshy c = PMC_IS_SYSTEM_MODE(ev->ev_mode) ? 's' : 'p'; 394145256Sjkoshy 395168949Sjkoshy if (ev->ev_fieldskip != 0) 396203790Sfabient (void) fprintf(args.pa_printfile, "%*s", 397168949Sjkoshy ev->ev_fieldskip, ""); 398168949Sjkoshy w = ev->ev_fieldwidth - ev->ev_fieldskip - 2; 399168949Sjkoshy 400168949Sjkoshy if (c == 's') 401203790Sfabient (void) fprintf(args.pa_printfile, "s/%02d/%-*s ", 402168949Sjkoshy ev->ev_cpu, w-3, ev->ev_name); 403168949Sjkoshy else 404203790Sfabient (void) fprintf(args.pa_printfile, "p/%*s ", w, 405145256Sjkoshy ev->ev_name); 406145256Sjkoshy } 407145256Sjkoshy 408203790Sfabient (void) fflush(args.pa_printfile); 409145256Sjkoshy} 410145256Sjkoshy 411145256Sjkoshyvoid 412203790Sfabientpmcstat_print_counters(void) 413145256Sjkoshy{ 414145256Sjkoshy int extra_width; 415145256Sjkoshy struct pmcstat_ev *ev; 416145256Sjkoshy pmc_value_t value; 417145256Sjkoshy 418145256Sjkoshy extra_width = sizeof(PRINT_HEADER_PREFIX) - 1; 419145256Sjkoshy 420203790Sfabient STAILQ_FOREACH(ev, &args.pa_events, ev_next) { 421145256Sjkoshy 422145256Sjkoshy /* skip sampling mode counters */ 423145256Sjkoshy if (PMC_IS_SAMPLING_MODE(ev->ev_mode)) 424145256Sjkoshy continue; 425145256Sjkoshy 426145256Sjkoshy if (pmc_read(ev->ev_pmcid, &value) < 0) 427145256Sjkoshy err(EX_OSERR, "ERROR: Cannot read pmc " 428145256Sjkoshy "\"%s\"", ev->ev_name); 429145256Sjkoshy 430203790Sfabient (void) fprintf(args.pa_printfile, "%*ju ", 431147708Sjkoshy ev->ev_fieldwidth + extra_width, 432147708Sjkoshy (uintmax_t) ev->ev_cumulative ? value : 433147708Sjkoshy (value - ev->ev_saved)); 434147708Sjkoshy 435145256Sjkoshy if (ev->ev_cumulative == 0) 436145256Sjkoshy ev->ev_saved = value; 437145256Sjkoshy extra_width = 0; 438145256Sjkoshy } 439145256Sjkoshy 440203790Sfabient (void) fflush(args.pa_printfile); 441145256Sjkoshy} 442145256Sjkoshy 443145256Sjkoshy/* 444145256Sjkoshy * Print output 445145256Sjkoshy */ 446145256Sjkoshy 447145256Sjkoshyvoid 448203790Sfabientpmcstat_print_pmcs(void) 449145256Sjkoshy{ 450145256Sjkoshy static int linecount = 0; 451145256Sjkoshy 452147708Sjkoshy /* check if we need to print a header line */ 453145256Sjkoshy if (++linecount > pmcstat_displayheight) { 454203790Sfabient (void) fprintf(args.pa_printfile, "\n"); 455145256Sjkoshy linecount = 1; 456145256Sjkoshy } 457145256Sjkoshy if (linecount == 1) 458203790Sfabient pmcstat_print_headers(); 459203790Sfabient (void) fprintf(args.pa_printfile, "\n"); 460145256Sjkoshy 461203790Sfabient pmcstat_print_counters(); 462145256Sjkoshy 463145256Sjkoshy return; 464145256Sjkoshy} 465145256Sjkoshy 466145256Sjkoshy/* 467145256Sjkoshy * Do process profiling 468145256Sjkoshy * 469145256Sjkoshy * If a pid was specified, attach each allocated PMC to the target 470145256Sjkoshy * process. Otherwise, fork a child and attach the PMCs to the child, 471145256Sjkoshy * and have the child exec() the target program. 472145256Sjkoshy */ 473145256Sjkoshy 474145256Sjkoshyvoid 475168949Sjkoshypmcstat_start_process(void) 476145256Sjkoshy{ 477168949Sjkoshy /* Signal the child to proceed. */ 478168949Sjkoshy if (write(pmcstat_sockpair[PARENTSOCKET], "!", 1) != 1) 479168949Sjkoshy err(EX_OSERR, "ERROR (parent): write of token failed"); 480145256Sjkoshy 481168949Sjkoshy (void) close(pmcstat_sockpair[PARENTSOCKET]); 482145256Sjkoshy} 483145256Sjkoshy 484145256Sjkoshyvoid 485145256Sjkoshypmcstat_show_usage(void) 486145256Sjkoshy{ 487145256Sjkoshy errx(EX_USAGE, 488145256Sjkoshy "[options] [commandline]\n" 489145256Sjkoshy "\t Measure process and/or system performance using hardware\n" 490145256Sjkoshy "\t performance monitoring counters.\n" 491145256Sjkoshy "\t Options include:\n" 492147191Sjkoshy "\t -C\t\t (toggle) show cumulative counts\n" 493147191Sjkoshy "\t -D path\t create profiles in directory \"path\"\n" 494147191Sjkoshy "\t -E\t\t (toggle) show counts at process exit\n" 495203790Sfabient "\t -F file\t write a system-wide callgraph (Kcachegrind format)" 496203790Sfabient " to \"file\"\n" 497174396Sjkoshy "\t -G file\t write a system-wide callgraph to \"file\"\n" 498157144Sjkoshy "\t -M file\t print executable/gmon file map to \"file\"\n" 499174396Sjkoshy "\t -N\t\t (toggle) capture callchains\n" 500147191Sjkoshy "\t -O file\t send log output to \"file\"\n" 501147191Sjkoshy "\t -P spec\t allocate a process-private sampling PMC\n" 502147191Sjkoshy "\t -R file\t read events from \"file\"\n" 503147191Sjkoshy "\t -S spec\t allocate a system-wide sampling PMC\n" 504203790Sfabient "\t -T\t\t start in top mode\n" 505147191Sjkoshy "\t -W\t\t (toggle) show counts per context switch\n" 506168949Sjkoshy "\t -c cpu-list\t set cpus for subsequent system-wide PMCs\n" 507147191Sjkoshy "\t -d\t\t (toggle) track descendants\n" 508203790Sfabient "\t -f spec\t pass \"spec\" to as plugin option\n" 509147191Sjkoshy "\t -g\t\t produce gprof(1) compatible profiles\n" 510162804Sru "\t -k dir\t\t set the path to the kernel\n" 511145256Sjkoshy "\t -n rate\t set sampling rate\n" 512145256Sjkoshy "\t -o file\t send print output to \"file\"\n" 513147191Sjkoshy "\t -p spec\t allocate a process-private counting PMC\n" 514157144Sjkoshy "\t -q\t\t suppress verbosity\n" 515157144Sjkoshy "\t -r fsroot\t specify FS root directory\n" 516147191Sjkoshy "\t -s spec\t allocate a system-wide counting PMC\n" 517183186Sjkoshy "\t -t process-spec attach to running processes matching " 518183186Sjkoshy "\"process-spec\"\n" 519157144Sjkoshy "\t -v\t\t increase verbosity\n" 520174396Sjkoshy "\t -w secs\t set printing time interval\n" 521174396Sjkoshy "\t -z depth\t limit callchain display depth" 522145256Sjkoshy ); 523145256Sjkoshy} 524145256Sjkoshy 525145256Sjkoshy/* 526203790Sfabient * At exit handler for top mode 527203790Sfabient */ 528203790Sfabient 529203790Sfabientvoid 530203790Sfabientpmcstat_topexit(void) 531203790Sfabient{ 532203790Sfabient if (!args.pa_toptty) 533203790Sfabient return; 534203790Sfabient 535203790Sfabient /* 536203790Sfabient * Shutdown ncurses. 537203790Sfabient */ 538203790Sfabient clrtoeol(); 539203790Sfabient refresh(); 540203790Sfabient endwin(); 541203790Sfabient} 542203790Sfabient 543203790Sfabient/* 544145256Sjkoshy * Main 545145256Sjkoshy */ 546145256Sjkoshy 547145256Sjkoshyint 548145256Sjkoshymain(int argc, char **argv) 549145256Sjkoshy{ 550224698Sattilio cpuset_t cpumask; 551145256Sjkoshy double interval; 552224698Sattilio int hcpu, option, npmc, ncpu; 553151542Sjkoshy int c, check_driver_stats, current_cpu, current_sampling_count; 554174396Sjkoshy int do_callchain, do_descendants, do_logproccsw, do_logprocexit; 555226514Sfabient int do_print, do_read; 556168949Sjkoshy size_t dummy; 557174396Sjkoshy int graphdepth; 558210794Sfabient int pipefd[2], rfd; 559147191Sjkoshy int use_cumulative_counts; 560203790Sfabient short cf, cb; 561157144Sjkoshy char *end, *tmp; 562174396Sjkoshy const char *errmsg, *graphfilename; 563147191Sjkoshy enum pmcstat_state runstate; 564151542Sjkoshy struct pmc_driverstats ds_start, ds_end; 565145256Sjkoshy struct pmcstat_ev *ev; 566145256Sjkoshy struct sigaction sa; 567145256Sjkoshy struct kevent kev; 568145256Sjkoshy struct winsize ws; 569147708Sjkoshy struct stat sb; 570157144Sjkoshy char buffer[PATH_MAX]; 571145256Sjkoshy 572151542Sjkoshy check_driver_stats = 0; 573145256Sjkoshy current_cpu = 0; 574145256Sjkoshy current_sampling_count = DEFAULT_SAMPLE_COUNT; 575174396Sjkoshy do_callchain = 1; 576145256Sjkoshy do_descendants = 0; 577147191Sjkoshy do_logproccsw = 0; 578147191Sjkoshy do_logprocexit = 0; 579145256Sjkoshy use_cumulative_counts = 0; 580174396Sjkoshy graphfilename = "-"; 581147191Sjkoshy args.pa_required = 0; 582145256Sjkoshy args.pa_flags = 0; 583157144Sjkoshy args.pa_verbosity = 1; 584147708Sjkoshy args.pa_logfd = -1; 585157144Sjkoshy args.pa_fsroot = ""; 586157144Sjkoshy args.pa_kernel = strdup("/boot/kernel"); 587147708Sjkoshy args.pa_samplesdir = "."; 588147708Sjkoshy args.pa_printfile = stderr; 589174396Sjkoshy args.pa_graphdepth = DEFAULT_CALLGRAPH_DEPTH; 590174396Sjkoshy args.pa_graphfile = NULL; 591145256Sjkoshy args.pa_interval = DEFAULT_WAIT_INTERVAL; 592157144Sjkoshy args.pa_mapfilename = NULL; 593174396Sjkoshy args.pa_inputpath = NULL; 594174396Sjkoshy args.pa_outputpath = NULL; 595203790Sfabient args.pa_pplugin = PMCSTAT_PL_NONE; 596203790Sfabient args.pa_plugin = PMCSTAT_PL_NONE; 597203790Sfabient args.pa_ctdumpinstr = 1; 598203790Sfabient args.pa_topmode = PMCSTAT_TOP_DELTA; 599203790Sfabient args.pa_toptty = 0; 600203790Sfabient args.pa_topcolor = 0; 601203790Sfabient args.pa_mergepmc = 0; 602169069Sjkoshy STAILQ_INIT(&args.pa_events); 603169069Sjkoshy SLIST_INIT(&args.pa_targets); 604153704Sjkoshy bzero(&ds_start, sizeof(ds_start)); 605153704Sjkoshy bzero(&ds_end, sizeof(ds_end)); 606145256Sjkoshy ev = NULL; 607224698Sattilio CPU_ZERO(&cpumask); 608145256Sjkoshy 609174396Sjkoshy /* 610174396Sjkoshy * The initial CPU mask specifies all non-halted CPUS in the 611174396Sjkoshy * system. 612174396Sjkoshy */ 613174396Sjkoshy dummy = sizeof(int); 614168949Sjkoshy if (sysctlbyname("hw.ncpu", &ncpu, &dummy, NULL, 0) < 0) 615174396Sjkoshy err(EX_OSERR, "ERROR: Cannot determine the number of CPUs"); 616224698Sattilio for (hcpu = 0; hcpu < ncpu; hcpu++) 617224698Sattilio CPU_SET(hcpu, &cpumask); 618168949Sjkoshy 619157144Sjkoshy while ((option = getopt(argc, argv, 620203790Sfabient "CD:EF:G:M:NO:P:R:S:TWc:df:gk:m:n:o:p:qr:s:t:vw:z:")) != -1) 621145256Sjkoshy switch (option) { 622145256Sjkoshy case 'C': /* cumulative values */ 623145256Sjkoshy use_cumulative_counts = !use_cumulative_counts; 624147191Sjkoshy args.pa_required |= FLAG_HAS_COUNTING_PMCS; 625145256Sjkoshy break; 626145256Sjkoshy 627145256Sjkoshy case 'c': /* CPU */ 628168949Sjkoshy 629224698Sattilio if (optarg[0] == '*' && optarg[1] == '\0') { 630224698Sattilio for (hcpu = 0; hcpu < ncpu; hcpu++) 631224698Sattilio CPU_SET(hcpu, &cpumask); 632224698Sattilio } else 633224698Sattilio pmcstat_get_cpumask(optarg, &cpumask); 634168949Sjkoshy 635210797Sfabient args.pa_flags |= FLAGS_HAS_CPUMASK; 636147191Sjkoshy args.pa_required |= FLAG_HAS_SYSTEM_PMCS; 637145256Sjkoshy break; 638145256Sjkoshy 639147708Sjkoshy case 'D': 640147708Sjkoshy if (stat(optarg, &sb) < 0) 641147708Sjkoshy err(EX_OSERR, "ERROR: Cannot stat \"%s\"", 642147708Sjkoshy optarg); 643147708Sjkoshy if (!S_ISDIR(sb.st_mode)) 644147708Sjkoshy errx(EX_USAGE, "ERROR: \"%s\" is not a " 645168949Sjkoshy "directory.", optarg); 646147708Sjkoshy args.pa_samplesdir = optarg; 647147708Sjkoshy args.pa_flags |= FLAG_HAS_SAMPLESDIR; 648147708Sjkoshy args.pa_required |= FLAG_DO_GPROF; 649147708Sjkoshy break; 650147708Sjkoshy 651145256Sjkoshy case 'd': /* toggle descendents */ 652145256Sjkoshy do_descendants = !do_descendants; 653147191Sjkoshy args.pa_required |= FLAG_HAS_PROCESS_PMCS; 654145256Sjkoshy break; 655145256Sjkoshy 656203790Sfabient case 'F': /* produce a system-wide calltree */ 657203790Sfabient args.pa_flags |= FLAG_DO_CALLGRAPHS; 658203790Sfabient args.pa_plugin = PMCSTAT_PL_CALLTREE; 659203790Sfabient graphfilename = optarg; 660203790Sfabient break; 661203790Sfabient 662203790Sfabient case 'f': /* plugins options */ 663203790Sfabient if (args.pa_plugin == PMCSTAT_PL_NONE) 664203790Sfabient err(EX_USAGE, "ERROR: Need -g/-G/-m/-T."); 665203790Sfabient pmcstat_pluginconfigure_log(optarg); 666203790Sfabient break; 667203790Sfabient 668174396Sjkoshy case 'G': /* produce a system-wide callgraph */ 669174396Sjkoshy args.pa_flags |= FLAG_DO_CALLGRAPHS; 670203790Sfabient args.pa_plugin = PMCSTAT_PL_CALLGRAPH; 671174396Sjkoshy graphfilename = optarg; 672174396Sjkoshy break; 673174396Sjkoshy 674147191Sjkoshy case 'g': /* produce gprof compatible profiles */ 675147191Sjkoshy args.pa_flags |= FLAG_DO_GPROF; 676203790Sfabient args.pa_pplugin = PMCSTAT_PL_CALLGRAPH; 677203790Sfabient args.pa_plugin = PMCSTAT_PL_GPROF; 678147191Sjkoshy break; 679147191Sjkoshy 680147708Sjkoshy case 'k': /* pathname to the kernel */ 681157144Sjkoshy free(args.pa_kernel); 682157144Sjkoshy args.pa_kernel = strdup(optarg); 683174396Sjkoshy args.pa_required |= FLAG_DO_ANALYSIS; 684147708Sjkoshy args.pa_flags |= FLAG_HAS_KERNELPATH; 685147191Sjkoshy break; 686147191Sjkoshy 687185322Sattilio case 'm': 688203790Sfabient args.pa_flags |= FLAG_DO_ANNOTATE; 689203790Sfabient args.pa_plugin = PMCSTAT_PL_ANNOTATE; 690203790Sfabient graphfilename = optarg; 691185322Sattilio break; 692185322Sattilio 693147191Sjkoshy case 'E': /* log process exit */ 694147191Sjkoshy do_logprocexit = !do_logprocexit; 695147191Sjkoshy args.pa_required |= (FLAG_HAS_PROCESS_PMCS | 696147708Sjkoshy FLAG_HAS_COUNTING_PMCS | FLAG_HAS_OUTPUT_LOGFILE); 697147191Sjkoshy break; 698147191Sjkoshy 699157144Sjkoshy case 'M': /* mapfile */ 700157144Sjkoshy args.pa_mapfilename = optarg; 701157144Sjkoshy break; 702157144Sjkoshy 703174396Sjkoshy case 'N': 704174396Sjkoshy do_callchain = !do_callchain; 705174396Sjkoshy args.pa_required |= FLAG_HAS_SAMPLING_PMCS; 706174396Sjkoshy break; 707174396Sjkoshy 708145256Sjkoshy case 'p': /* process virtual counting PMC */ 709145256Sjkoshy case 's': /* system-wide counting PMC */ 710145256Sjkoshy case 'P': /* process virtual sampling PMC */ 711145256Sjkoshy case 'S': /* system-wide sampling PMC */ 712145256Sjkoshy if ((ev = malloc(sizeof(*ev))) == NULL) 713147191Sjkoshy errx(EX_SOFTWARE, "ERROR: Out of memory."); 714145256Sjkoshy 715145256Sjkoshy switch (option) { 716145256Sjkoshy case 'p': ev->ev_mode = PMC_MODE_TC; break; 717145256Sjkoshy case 's': ev->ev_mode = PMC_MODE_SC; break; 718145256Sjkoshy case 'P': ev->ev_mode = PMC_MODE_TS; break; 719145256Sjkoshy case 'S': ev->ev_mode = PMC_MODE_SS; break; 720145256Sjkoshy } 721145256Sjkoshy 722147191Sjkoshy if (option == 'P' || option == 'p') { 723147191Sjkoshy args.pa_flags |= FLAG_HAS_PROCESS_PMCS; 724147708Sjkoshy args.pa_required |= (FLAG_HAS_COMMANDLINE | 725169069Sjkoshy FLAG_HAS_TARGET); 726147191Sjkoshy } 727145256Sjkoshy 728147191Sjkoshy if (option == 'P' || option == 'S') { 729147191Sjkoshy args.pa_flags |= FLAG_HAS_SAMPLING_PMCS; 730147708Sjkoshy args.pa_required |= (FLAG_HAS_PIPE | 731147708Sjkoshy FLAG_HAS_OUTPUT_LOGFILE); 732147191Sjkoshy } 733145256Sjkoshy 734145256Sjkoshy if (option == 'p' || option == 's') 735147191Sjkoshy args.pa_flags |= FLAG_HAS_COUNTING_PMCS; 736145256Sjkoshy 737147191Sjkoshy if (option == 's' || option == 'S') 738147191Sjkoshy args.pa_flags |= FLAG_HAS_SYSTEM_PMCS; 739147191Sjkoshy 740145256Sjkoshy ev->ev_spec = strdup(optarg); 741145256Sjkoshy 742145256Sjkoshy if (option == 'S' || option == 'P') 743145256Sjkoshy ev->ev_count = current_sampling_count; 744145256Sjkoshy else 745145256Sjkoshy ev->ev_count = -1; 746145256Sjkoshy 747224698Sattilio if (option == 'S' || option == 's') { 748224698Sattilio hcpu = sizeof(cpumask) * NBBY; 749224698Sattilio for (hcpu--; hcpu >= 0; hcpu--) 750224698Sattilio if (CPU_ISSET(hcpu, &cpumask)) 751224698Sattilio break; 752224698Sattilio ev->ev_cpu = hcpu; 753224698Sattilio } else 754145256Sjkoshy ev->ev_cpu = PMC_CPU_ANY; 755145256Sjkoshy 756147191Sjkoshy ev->ev_flags = 0; 757174396Sjkoshy if (do_callchain) 758174396Sjkoshy ev->ev_flags |= PMC_F_CALLCHAIN; 759147191Sjkoshy if (do_descendants) 760147191Sjkoshy ev->ev_flags |= PMC_F_DESCENDANTS; 761147191Sjkoshy if (do_logprocexit) 762147191Sjkoshy ev->ev_flags |= PMC_F_LOG_PROCEXIT; 763147191Sjkoshy if (do_logproccsw) 764147191Sjkoshy ev->ev_flags |= PMC_F_LOG_PROCCSW; 765147191Sjkoshy 766145256Sjkoshy ev->ev_cumulative = use_cumulative_counts; 767145256Sjkoshy 768145256Sjkoshy ev->ev_saved = 0LL; 769145256Sjkoshy ev->ev_pmcid = PMC_ID_INVALID; 770145256Sjkoshy 771145256Sjkoshy /* extract event name */ 772145256Sjkoshy c = strcspn(optarg, ", \t"); 773145256Sjkoshy ev->ev_name = malloc(c + 1); 774145256Sjkoshy (void) strncpy(ev->ev_name, optarg, c); 775145256Sjkoshy *(ev->ev_name + c) = '\0'; 776145256Sjkoshy 777169069Sjkoshy STAILQ_INSERT_TAIL(&args.pa_events, ev, ev_next); 778145256Sjkoshy 779224698Sattilio if (option == 's' || option == 'S') { 780224698Sattilio hcpu = CPU_ISSET(ev->ev_cpu, &cpumask); 781224698Sattilio CPU_CLR(ev->ev_cpu, &cpumask); 782224698Sattilio pmcstat_clone_event_descriptor(ev, &cpumask); 783224698Sattilio if (hcpu != 0) 784224698Sattilio CPU_SET(ev->ev_cpu, &cpumask); 785224698Sattilio } 786168949Sjkoshy 787145256Sjkoshy break; 788145256Sjkoshy 789145256Sjkoshy case 'n': /* sampling count */ 790145256Sjkoshy current_sampling_count = strtol(optarg, &end, 0); 791145256Sjkoshy if (*end != '\0' || current_sampling_count <= 0) 792145256Sjkoshy errx(EX_USAGE, 793147191Sjkoshy "ERROR: Illegal count value \"%s\".", 794145256Sjkoshy optarg); 795147191Sjkoshy args.pa_required |= FLAG_HAS_SAMPLING_PMCS; 796145256Sjkoshy break; 797145256Sjkoshy 798145256Sjkoshy case 'o': /* outputfile */ 799226986Sfabient if (args.pa_printfile != NULL && 800226986Sfabient args.pa_printfile != stdout && 801226986Sfabient args.pa_printfile != stderr) 802147708Sjkoshy (void) fclose(args.pa_printfile); 803147708Sjkoshy if ((args.pa_printfile = fopen(optarg, "w")) == NULL) 804145256Sjkoshy errx(EX_OSERR, "ERROR: cannot open \"%s\" for " 805147191Sjkoshy "writing.", optarg); 806147708Sjkoshy args.pa_flags |= FLAG_DO_PRINT; 807147191Sjkoshy break; 808145256Sjkoshy 809145256Sjkoshy case 'O': /* sampling output */ 810147708Sjkoshy if (args.pa_outputpath) 811147708Sjkoshy errx(EX_USAGE, "ERROR: option -O may only be " 812147191Sjkoshy "specified once."); 813147708Sjkoshy args.pa_outputpath = optarg; 814147708Sjkoshy args.pa_flags |= FLAG_HAS_OUTPUT_LOGFILE; 815145256Sjkoshy break; 816145256Sjkoshy 817157144Sjkoshy case 'q': /* quiet mode */ 818157144Sjkoshy args.pa_verbosity = 0; 819157144Sjkoshy break; 820157144Sjkoshy 821157144Sjkoshy case 'r': /* root FS path */ 822157144Sjkoshy args.pa_fsroot = optarg; 823157144Sjkoshy break; 824157144Sjkoshy 825147708Sjkoshy case 'R': /* read an existing log file */ 826174396Sjkoshy if (args.pa_inputpath != NULL) 827147708Sjkoshy errx(EX_USAGE, "ERROR: option -R may only be " 828147708Sjkoshy "specified once."); 829147708Sjkoshy args.pa_inputpath = optarg; 830147708Sjkoshy if (args.pa_printfile == stderr) 831147708Sjkoshy args.pa_printfile = stdout; 832147708Sjkoshy args.pa_flags |= FLAG_READ_LOGFILE; 833147708Sjkoshy break; 834147708Sjkoshy 835169069Sjkoshy case 't': /* target pid or process name */ 836203790Sfabient pmcstat_find_targets(optarg); 837145256Sjkoshy 838169069Sjkoshy args.pa_flags |= FLAG_HAS_TARGET; 839147191Sjkoshy args.pa_required |= FLAG_HAS_PROCESS_PMCS; 840145256Sjkoshy break; 841145256Sjkoshy 842203790Sfabient case 'T': /* top mode */ 843203790Sfabient args.pa_flags |= FLAG_DO_TOP; 844203790Sfabient args.pa_plugin = PMCSTAT_PL_CALLGRAPH; 845203790Sfabient args.pa_ctdumpinstr = 0; 846203790Sfabient args.pa_mergepmc = 1; 847203790Sfabient if (args.pa_printfile == stderr) 848203790Sfabient args.pa_printfile = stdout; 849203790Sfabient break; 850203790Sfabient 851157144Sjkoshy case 'v': /* verbose */ 852157144Sjkoshy args.pa_verbosity++; 853157144Sjkoshy break; 854157144Sjkoshy 855145256Sjkoshy case 'w': /* wait interval */ 856145256Sjkoshy interval = strtod(optarg, &end); 857145256Sjkoshy if (*end != '\0' || interval <= 0) 858145256Sjkoshy errx(EX_USAGE, "ERROR: Illegal wait interval " 859147191Sjkoshy "value \"%s\".", optarg); 860145256Sjkoshy args.pa_flags |= FLAG_HAS_WAIT_INTERVAL; 861145256Sjkoshy args.pa_interval = interval; 862147191Sjkoshy break; 863145256Sjkoshy 864147191Sjkoshy case 'W': /* toggle LOG_CSW */ 865147191Sjkoshy do_logproccsw = !do_logproccsw; 866147191Sjkoshy args.pa_required |= (FLAG_HAS_PROCESS_PMCS | 867147708Sjkoshy FLAG_HAS_COUNTING_PMCS | FLAG_HAS_OUTPUT_LOGFILE); 868145256Sjkoshy break; 869145256Sjkoshy 870174396Sjkoshy case 'z': 871174396Sjkoshy graphdepth = strtod(optarg, &end); 872174396Sjkoshy if (*end != '\0' || graphdepth <= 0) 873174396Sjkoshy errx(EX_USAGE, "ERROR: Illegal callchain " 874174396Sjkoshy "depth \"%s\".", optarg); 875174396Sjkoshy args.pa_graphdepth = graphdepth; 876174396Sjkoshy args.pa_required |= FLAG_DO_CALLGRAPHS; 877174396Sjkoshy break; 878174396Sjkoshy 879145256Sjkoshy case '?': 880145256Sjkoshy default: 881145256Sjkoshy pmcstat_show_usage(); 882145256Sjkoshy break; 883145256Sjkoshy 884145256Sjkoshy } 885145256Sjkoshy 886145256Sjkoshy args.pa_argc = (argc -= optind); 887145256Sjkoshy args.pa_argv = (argv += optind); 888145256Sjkoshy 889210797Sfabient /* If we read from logfile and no specified CPU mask use 890210797Sfabient * the maximum CPU count. 891210797Sfabient */ 892210797Sfabient if ((args.pa_flags & FLAG_READ_LOGFILE) && 893210797Sfabient (args.pa_flags & FLAGS_HAS_CPUMASK) == 0) 894224698Sattilio CPU_FILL(&cpumask); 895210797Sfabient 896174396Sjkoshy args.pa_cpumask = cpumask; /* For selecting CPUs using -R. */ 897174396Sjkoshy 898147708Sjkoshy if (argc) /* command line present */ 899147708Sjkoshy args.pa_flags |= FLAG_HAS_COMMANDLINE; 900145256Sjkoshy 901185322Sattilio if (args.pa_flags & (FLAG_DO_GPROF | FLAG_DO_CALLGRAPHS | 902203790Sfabient FLAG_DO_ANNOTATE | FLAG_DO_TOP)) 903174396Sjkoshy args.pa_flags |= FLAG_DO_ANALYSIS; 904174396Sjkoshy 905145256Sjkoshy /* 906145256Sjkoshy * Check invocation syntax. 907145256Sjkoshy */ 908145256Sjkoshy 909147708Sjkoshy /* disallow -O and -R together */ 910147708Sjkoshy if (args.pa_outputpath && args.pa_inputpath) 911147708Sjkoshy errx(EX_USAGE, "ERROR: options -O and -R are mutually " 912147708Sjkoshy "exclusive."); 913147708Sjkoshy 914185322Sattilio /* -m option is allowed with -R only. */ 915203790Sfabient if (args.pa_flags & FLAG_DO_ANNOTATE && args.pa_inputpath == NULL) 916185322Sattilio errx(EX_USAGE, "ERROR: option -m requires an input file"); 917185322Sattilio 918185322Sattilio /* -m option is not allowed combined with -g or -G. */ 919203790Sfabient if (args.pa_flags & FLAG_DO_ANNOTATE && 920185322Sattilio args.pa_flags & (FLAG_DO_GPROF | FLAG_DO_CALLGRAPHS)) 921185322Sattilio errx(EX_USAGE, "ERROR: option -m and -g | -G are mutually " 922185322Sattilio "exclusive"); 923185322Sattilio 924147708Sjkoshy if (args.pa_flags & FLAG_READ_LOGFILE) { 925147191Sjkoshy errmsg = NULL; 926147708Sjkoshy if (args.pa_flags & FLAG_HAS_COMMANDLINE) 927147191Sjkoshy errmsg = "a command line specification"; 928169069Sjkoshy else if (args.pa_flags & FLAG_HAS_TARGET) 929147191Sjkoshy errmsg = "option -t"; 930169069Sjkoshy else if (!STAILQ_EMPTY(&args.pa_events)) 931147191Sjkoshy errmsg = "a PMC event specification"; 932147191Sjkoshy if (errmsg) 933147191Sjkoshy errx(EX_USAGE, "ERROR: option -R may not be used with " 934147191Sjkoshy "%s.", errmsg); 935169069Sjkoshy } else if (STAILQ_EMPTY(&args.pa_events)) 936147708Sjkoshy /* All other uses require a PMC spec. */ 937145256Sjkoshy pmcstat_show_usage(); 938145256Sjkoshy 939147191Sjkoshy /* check for -t pid without a process PMC spec */ 940169069Sjkoshy if ((args.pa_required & FLAG_HAS_TARGET) && 941147191Sjkoshy (args.pa_flags & FLAG_HAS_PROCESS_PMCS) == 0) 942147191Sjkoshy errx(EX_USAGE, "ERROR: option -t requires a process mode PMC " 943147191Sjkoshy "to be specified."); 944147191Sjkoshy 945147191Sjkoshy /* check for process-mode options without a command or -t pid */ 946147191Sjkoshy if ((args.pa_required & FLAG_HAS_PROCESS_PMCS) && 947169069Sjkoshy (args.pa_flags & (FLAG_HAS_COMMANDLINE | FLAG_HAS_TARGET)) == 0) 948147708Sjkoshy errx(EX_USAGE, "ERROR: options -d, -E, -p, -P, and -W require " 949147708Sjkoshy "a command line or target process."); 950147191Sjkoshy 951147191Sjkoshy /* check for -p | -P without a target process of some sort */ 952169069Sjkoshy if ((args.pa_required & (FLAG_HAS_COMMANDLINE | FLAG_HAS_TARGET)) && 953169069Sjkoshy (args.pa_flags & (FLAG_HAS_COMMANDLINE | FLAG_HAS_TARGET)) == 0) 954147708Sjkoshy errx(EX_USAGE, "ERROR: options -P and -p require a " 955147191Sjkoshy "target process or a command line."); 956147191Sjkoshy 957147191Sjkoshy /* check for process-mode options without a process-mode PMC */ 958147191Sjkoshy if ((args.pa_required & FLAG_HAS_PROCESS_PMCS) && 959147191Sjkoshy (args.pa_flags & FLAG_HAS_PROCESS_PMCS) == 0) 960147708Sjkoshy errx(EX_USAGE, "ERROR: options -d, -E, and -W require a " 961147191Sjkoshy "process mode PMC to be specified."); 962147191Sjkoshy 963174396Sjkoshy /* check for -c cpu with no system mode PMCs or logfile. */ 964147191Sjkoshy if ((args.pa_required & FLAG_HAS_SYSTEM_PMCS) && 965174396Sjkoshy (args.pa_flags & FLAG_HAS_SYSTEM_PMCS) == 0 && 966174396Sjkoshy (args.pa_flags & FLAG_READ_LOGFILE) == 0) 967147191Sjkoshy errx(EX_USAGE, "ERROR: option -c requires at least one " 968147191Sjkoshy "system mode PMC to be specified."); 969147191Sjkoshy 970147191Sjkoshy /* check for counting mode options without a counting PMC */ 971147191Sjkoshy if ((args.pa_required & FLAG_HAS_COUNTING_PMCS) && 972147191Sjkoshy (args.pa_flags & FLAG_HAS_COUNTING_PMCS) == 0) 973203790Sfabient errx(EX_USAGE, "ERROR: options -C, -W and -o require at " 974149805Sjkoshy "least one counting mode PMC to be specified."); 975147191Sjkoshy 976147191Sjkoshy /* check for sampling mode options without a sampling PMC spec */ 977147191Sjkoshy if ((args.pa_required & FLAG_HAS_SAMPLING_PMCS) && 978147191Sjkoshy (args.pa_flags & FLAG_HAS_SAMPLING_PMCS) == 0) 979174396Sjkoshy errx(EX_USAGE, "ERROR: options -N, -n and -O require at " 980174396Sjkoshy "least one sampling mode PMC to be specified."); 981147191Sjkoshy 982203790Sfabient /* check if -g/-G/-m/-T are being used correctly */ 983174396Sjkoshy if ((args.pa_flags & FLAG_DO_ANALYSIS) && 984147708Sjkoshy !(args.pa_flags & (FLAG_HAS_SAMPLING_PMCS|FLAG_READ_LOGFILE))) 985203790Sfabient errx(EX_USAGE, "ERROR: options -g/-G/-m/-T require sampling PMCs " 986174396Sjkoshy "or -R to be specified."); 987147708Sjkoshy 988147191Sjkoshy /* check if -O was spuriously specified */ 989147708Sjkoshy if ((args.pa_flags & FLAG_HAS_OUTPUT_LOGFILE) && 990147708Sjkoshy (args.pa_required & FLAG_HAS_OUTPUT_LOGFILE) == 0) 991147191Sjkoshy errx(EX_USAGE, 992147191Sjkoshy "ERROR: option -O is used only with options " 993147708Sjkoshy "-E, -P, -S and -W."); 994147191Sjkoshy 995203790Sfabient /* -k kernel path require -g/-G/-m/-T or -R */ 996147708Sjkoshy if ((args.pa_flags & FLAG_HAS_KERNELPATH) && 997174396Sjkoshy (args.pa_flags & FLAG_DO_ANALYSIS) == 0 && 998157144Sjkoshy (args.pa_flags & FLAG_READ_LOGFILE) == 0) 999203790Sfabient errx(EX_USAGE, "ERROR: option -k is only used with -g/-R/-m/-T."); 1000147708Sjkoshy 1001174396Sjkoshy /* -D only applies to gprof output mode (-g) */ 1002147708Sjkoshy if ((args.pa_flags & FLAG_HAS_SAMPLESDIR) && 1003174396Sjkoshy (args.pa_flags & FLAG_DO_GPROF) == 0) 1004174396Sjkoshy errx(EX_USAGE, "ERROR: option -D is only used with -g."); 1005147708Sjkoshy 1006157144Sjkoshy /* -M mapfile requires -g or -R */ 1007157144Sjkoshy if (args.pa_mapfilename != NULL && 1008157144Sjkoshy (args.pa_flags & FLAG_DO_GPROF) == 0 && 1009157144Sjkoshy (args.pa_flags & FLAG_READ_LOGFILE) == 0) 1010157144Sjkoshy errx(EX_USAGE, "ERROR: option -M is only used with -g/-R."); 1011157144Sjkoshy 1012147708Sjkoshy /* 1013147708Sjkoshy * Disallow textual output of sampling PMCs if counting PMCs 1014147708Sjkoshy * have also been asked for, mostly because the combined output 1015147708Sjkoshy * is difficult to make sense of. 1016147708Sjkoshy */ 1017147708Sjkoshy if ((args.pa_flags & FLAG_HAS_COUNTING_PMCS) && 1018147708Sjkoshy (args.pa_flags & FLAG_HAS_SAMPLING_PMCS) && 1019168927Sjkoshy ((args.pa_flags & FLAG_HAS_OUTPUT_LOGFILE) == 0)) 1020147708Sjkoshy errx(EX_USAGE, "ERROR: option -O is required if counting and " 1021147708Sjkoshy "sampling PMCs are specified together."); 1022147708Sjkoshy 1023157144Sjkoshy /* 1024174396Sjkoshy * Check if "-k kerneldir" was specified, and if whether 1025174396Sjkoshy * 'kerneldir' actually refers to a a file. If so, use 1026174396Sjkoshy * `dirname path` to determine the kernel directory. 1027157144Sjkoshy */ 1028157144Sjkoshy if (args.pa_flags & FLAG_HAS_KERNELPATH) { 1029157144Sjkoshy (void) snprintf(buffer, sizeof(buffer), "%s%s", args.pa_fsroot, 1030157144Sjkoshy args.pa_kernel); 1031157144Sjkoshy if (stat(buffer, &sb) < 0) 1032157144Sjkoshy err(EX_OSERR, "ERROR: Cannot locate kernel \"%s\"", 1033157144Sjkoshy buffer); 1034157144Sjkoshy if (!S_ISREG(sb.st_mode) && !S_ISDIR(sb.st_mode)) 1035157144Sjkoshy errx(EX_USAGE, "ERROR: \"%s\": Unsupported file type.", 1036157144Sjkoshy buffer); 1037157144Sjkoshy if (!S_ISDIR(sb.st_mode)) { 1038157144Sjkoshy tmp = args.pa_kernel; 1039157144Sjkoshy args.pa_kernel = strdup(dirname(args.pa_kernel)); 1040157144Sjkoshy free(tmp); 1041157144Sjkoshy (void) snprintf(buffer, sizeof(buffer), "%s%s", 1042157144Sjkoshy args.pa_fsroot, args.pa_kernel); 1043157144Sjkoshy if (stat(buffer, &sb) < 0) 1044157144Sjkoshy err(EX_OSERR, "ERROR: Cannot stat \"%s\"", 1045157144Sjkoshy buffer); 1046157144Sjkoshy if (!S_ISDIR(sb.st_mode)) 1047157144Sjkoshy errx(EX_USAGE, "ERROR: \"%s\" is not a " 1048157144Sjkoshy "directory.", buffer); 1049157144Sjkoshy } 1050157144Sjkoshy } 1051168949Sjkoshy 1052174396Sjkoshy /* 1053174396Sjkoshy * If we have a callgraph be created, select the outputfile. 1054174396Sjkoshy */ 1055174396Sjkoshy if (args.pa_flags & FLAG_DO_CALLGRAPHS) { 1056174396Sjkoshy if (strcmp(graphfilename, "-") == 0) 1057174396Sjkoshy args.pa_graphfile = args.pa_printfile; 1058174396Sjkoshy else { 1059174396Sjkoshy args.pa_graphfile = fopen(graphfilename, "w"); 1060174396Sjkoshy if (args.pa_graphfile == NULL) 1061174396Sjkoshy err(EX_OSERR, "ERROR: cannot open \"%s\" " 1062174396Sjkoshy "for writing", graphfilename); 1063174396Sjkoshy } 1064174396Sjkoshy } 1065203790Sfabient if (args.pa_flags & FLAG_DO_ANNOTATE) { 1066185322Sattilio args.pa_graphfile = fopen(graphfilename, "w"); 1067185322Sattilio if (args.pa_graphfile == NULL) 1068185322Sattilio err(EX_OSERR, "ERROR: cannot open \"%s\" for writing", 1069185322Sattilio graphfilename); 1070185322Sattilio } 1071174396Sjkoshy 1072210794Sfabient /* if we've been asked to process a log file, skip init */ 1073210794Sfabient if ((args.pa_flags & FLAG_READ_LOGFILE) == 0) { 1074210794Sfabient if (pmc_init() < 0) 1075210794Sfabient err(EX_UNAVAILABLE, 1076210794Sfabient "ERROR: Initialization of the pmc(3) library failed"); 1077210794Sfabient 1078210794Sfabient if ((npmc = pmc_npmc(0)) < 0) /* assume all CPUs are identical */ 1079210794Sfabient err(EX_OSERR, "ERROR: Cannot determine the number of PMCs " 1080210794Sfabient "on CPU %d", 0); 1081210794Sfabient } 1082210794Sfabient 1083210794Sfabient /* Allocate a kqueue */ 1084210794Sfabient if ((pmcstat_kq = kqueue()) < 0) 1085210794Sfabient err(EX_OSERR, "ERROR: Cannot allocate kqueue"); 1086210794Sfabient 1087210794Sfabient /* Setup the logfile as the source. */ 1088147708Sjkoshy if (args.pa_flags & FLAG_READ_LOGFILE) { 1089147708Sjkoshy /* 1090147708Sjkoshy * Print the log in textual form if we haven't been 1091174396Sjkoshy * asked to generate profiling information. 1092147708Sjkoshy */ 1093174396Sjkoshy if ((args.pa_flags & FLAG_DO_ANALYSIS) == 0) 1094147708Sjkoshy args.pa_flags |= FLAG_DO_PRINT; 1095147708Sjkoshy 1096203790Sfabient pmcstat_initialize_logging(); 1097210794Sfabient rfd = pmcstat_open_log(args.pa_inputpath, 1098157406Sjkoshy PMCSTAT_OPEN_FOR_READ); 1099210794Sfabient if ((args.pa_logparser = pmclog_open(rfd)) == NULL) 1100147708Sjkoshy err(EX_OSERR, "ERROR: Cannot create parser"); 1101210794Sfabient if (fcntl(rfd, F_SETFL, O_NONBLOCK) < 0) 1102210794Sfabient err(EX_OSERR, "ERROR: fcntl(2) failed"); 1103210794Sfabient EV_SET(&kev, rfd, EVFILT_READ, EV_ADD, 1104210794Sfabient 0, 0, NULL); 1105210794Sfabient if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1106210794Sfabient err(EX_OSERR, "ERROR: Cannot register kevent"); 1107147191Sjkoshy } 1108145256Sjkoshy /* 1109147708Sjkoshy * Configure the specified log file or setup a default log 1110147708Sjkoshy * consumer via a pipe. 1111147708Sjkoshy */ 1112147708Sjkoshy if (args.pa_required & FLAG_HAS_OUTPUT_LOGFILE) { 1113157406Sjkoshy if (args.pa_outputpath) 1114157406Sjkoshy args.pa_logfd = pmcstat_open_log(args.pa_outputpath, 1115157406Sjkoshy PMCSTAT_OPEN_FOR_WRITE); 1116157406Sjkoshy else { 1117147708Sjkoshy /* 1118147708Sjkoshy * process the log on the fly by reading it in 1119147708Sjkoshy * through a pipe. 1120147708Sjkoshy */ 1121147708Sjkoshy if (pipe(pipefd) < 0) 1122147708Sjkoshy err(EX_OSERR, "ERROR: pipe(2) failed"); 1123147708Sjkoshy 1124147708Sjkoshy if (fcntl(pipefd[READPIPEFD], F_SETFL, O_NONBLOCK) < 0) 1125147708Sjkoshy err(EX_OSERR, "ERROR: fcntl(2) failed"); 1126147708Sjkoshy 1127147708Sjkoshy EV_SET(&kev, pipefd[READPIPEFD], EVFILT_READ, EV_ADD, 1128147708Sjkoshy 0, 0, NULL); 1129147708Sjkoshy 1130147708Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1131147708Sjkoshy err(EX_OSERR, "ERROR: Cannot register kevent"); 1132147708Sjkoshy 1133147708Sjkoshy args.pa_logfd = pipefd[WRITEPIPEFD]; 1134147708Sjkoshy 1135203790Sfabient args.pa_flags |= FLAG_HAS_PIPE; 1136203790Sfabient if ((args.pa_flags & FLAG_DO_TOP) == 0) 1137203790Sfabient args.pa_flags |= FLAG_DO_PRINT; 1138147708Sjkoshy args.pa_logparser = pmclog_open(pipefd[READPIPEFD]); 1139147708Sjkoshy } 1140147708Sjkoshy 1141147708Sjkoshy if (pmc_configure_logfile(args.pa_logfd) < 0) 1142147708Sjkoshy err(EX_OSERR, "ERROR: Cannot configure log file"); 1143147708Sjkoshy } 1144147708Sjkoshy 1145151542Sjkoshy /* remember to check for driver errors if we are sampling or logging */ 1146151542Sjkoshy check_driver_stats = (args.pa_flags & FLAG_HAS_SAMPLING_PMCS) || 1147151542Sjkoshy (args.pa_flags & FLAG_HAS_OUTPUT_LOGFILE); 1148151542Sjkoshy 1149147708Sjkoshy /* 1150210794Sfabient if (args.pa_flags & FLAG_READ_LOGFILE) { 1151145256Sjkoshy * Allocate PMCs. 1152145256Sjkoshy */ 1153145256Sjkoshy 1154169069Sjkoshy STAILQ_FOREACH(ev, &args.pa_events, ev_next) { 1155145256Sjkoshy if (pmc_allocate(ev->ev_spec, ev->ev_mode, 1156147191Sjkoshy ev->ev_flags, ev->ev_cpu, &ev->ev_pmcid) < 0) 1157145256Sjkoshy err(EX_OSERR, "ERROR: Cannot allocate %s-mode pmc with " 1158145256Sjkoshy "specification \"%s\"", 1159145256Sjkoshy PMC_IS_SYSTEM_MODE(ev->ev_mode) ? "system" : "process", 1160145256Sjkoshy ev->ev_spec); 1161145256Sjkoshy 1162147708Sjkoshy if (PMC_IS_SAMPLING_MODE(ev->ev_mode) && 1163147708Sjkoshy pmc_set(ev->ev_pmcid, ev->ev_count) < 0) 1164147708Sjkoshy err(EX_OSERR, "ERROR: Cannot set sampling count " 1165147708Sjkoshy "for PMC \"%s\"", ev->ev_name); 1166147708Sjkoshy } 1167147708Sjkoshy 1168145256Sjkoshy /* compute printout widths */ 1169169069Sjkoshy STAILQ_FOREACH(ev, &args.pa_events, ev_next) { 1170145774Sjkoshy int counter_width; 1171145774Sjkoshy int display_width; 1172145774Sjkoshy int header_width; 1173145256Sjkoshy 1174145774Sjkoshy (void) pmc_width(ev->ev_pmcid, &counter_width); 1175168949Sjkoshy header_width = strlen(ev->ev_name) + 2; /* prefix '%c/' */ 1176145774Sjkoshy display_width = (int) floor(counter_width / 3.32193) + 1; 1177145256Sjkoshy 1178168949Sjkoshy if (PMC_IS_SYSTEM_MODE(ev->ev_mode)) 1179168949Sjkoshy header_width += 3; /* 2 digit CPU number + '/' */ 1180168949Sjkoshy 1181145774Sjkoshy if (header_width > display_width) { 1182145256Sjkoshy ev->ev_fieldskip = 0; 1183145774Sjkoshy ev->ev_fieldwidth = header_width; 1184145256Sjkoshy } else { 1185145774Sjkoshy ev->ev_fieldskip = display_width - 1186145774Sjkoshy header_width; 1187145774Sjkoshy ev->ev_fieldwidth = display_width; 1188145256Sjkoshy } 1189145256Sjkoshy } 1190145256Sjkoshy 1191145256Sjkoshy /* 1192145256Sjkoshy * If our output is being set to a terminal, register a handler 1193145256Sjkoshy * for window size changes. 1194145256Sjkoshy */ 1195145256Sjkoshy 1196147708Sjkoshy if (isatty(fileno(args.pa_printfile))) { 1197145256Sjkoshy 1198147708Sjkoshy if (ioctl(fileno(args.pa_printfile), TIOCGWINSZ, &ws) < 0) 1199145256Sjkoshy err(EX_OSERR, "ERROR: Cannot determine window size"); 1200145256Sjkoshy 1201145256Sjkoshy pmcstat_displayheight = ws.ws_row - 1; 1202203790Sfabient pmcstat_displaywidth = ws.ws_col - 1; 1203145256Sjkoshy 1204145256Sjkoshy EV_SET(&kev, SIGWINCH, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL); 1205145256Sjkoshy 1206145256Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1207145256Sjkoshy err(EX_OSERR, "ERROR: Cannot register kevent for " 1208145256Sjkoshy "SIGWINCH"); 1209203790Sfabient 1210203790Sfabient args.pa_toptty = 1; 1211145256Sjkoshy } 1212145256Sjkoshy 1213203790Sfabient /* 1214203790Sfabient * Listen to key input in top mode. 1215203790Sfabient */ 1216203790Sfabient if (args.pa_flags & FLAG_DO_TOP) { 1217203790Sfabient EV_SET(&kev, fileno(stdin), EVFILT_READ, EV_ADD, 0, 0, NULL); 1218203790Sfabient if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1219203790Sfabient err(EX_OSERR, "ERROR: Cannot register kevent"); 1220203790Sfabient } 1221203790Sfabient 1222145256Sjkoshy EV_SET(&kev, SIGINT, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL); 1223145256Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1224145256Sjkoshy err(EX_OSERR, "ERROR: Cannot register kevent for SIGINT"); 1225145256Sjkoshy 1226147191Sjkoshy EV_SET(&kev, SIGIO, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL); 1227147191Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1228147191Sjkoshy err(EX_OSERR, "ERROR: Cannot register kevent for SIGIO"); 1229145256Sjkoshy 1230147191Sjkoshy /* 1231147191Sjkoshy * An exec() failure of a forked child is signalled by the 1232147191Sjkoshy * child sending the parent a SIGCHLD. We don't register an 1233147191Sjkoshy * actual signal handler for SIGCHLD, but instead use our 1234147191Sjkoshy * kqueue to pick up the signal. 1235147191Sjkoshy */ 1236147191Sjkoshy EV_SET(&kev, SIGCHLD, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL); 1237147191Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1238147191Sjkoshy err(EX_OSERR, "ERROR: Cannot register kevent for SIGCHLD"); 1239145256Sjkoshy 1240203790Sfabient /* 1241203790Sfabient * Setup a timer if we have counting mode PMCs needing to be printed or 1242203790Sfabient * top mode plugin is active. 1243203790Sfabient */ 1244203790Sfabient if (((args.pa_flags & FLAG_HAS_COUNTING_PMCS) && 1245203790Sfabient (args.pa_required & FLAG_HAS_OUTPUT_LOGFILE) == 0) || 1246203790Sfabient (args.pa_flags & FLAG_DO_TOP)) { 1247145256Sjkoshy EV_SET(&kev, 0, EVFILT_TIMER, EV_ADD, 0, 1248145256Sjkoshy args.pa_interval * 1000, NULL); 1249145256Sjkoshy 1250145256Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1251145256Sjkoshy err(EX_OSERR, "ERROR: Cannot register kevent for " 1252145256Sjkoshy "timer"); 1253145256Sjkoshy } 1254145256Sjkoshy 1255145256Sjkoshy /* attach PMCs to the target process, starting it if specified */ 1256168949Sjkoshy if (args.pa_flags & FLAG_HAS_COMMANDLINE) 1257203790Sfabient pmcstat_create_process(); 1258145256Sjkoshy 1259151542Sjkoshy if (check_driver_stats && pmc_get_driver_stats(&ds_start) < 0) 1260151542Sjkoshy err(EX_OSERR, "ERROR: Cannot retrieve driver statistics"); 1261151542Sjkoshy 1262168949Sjkoshy /* Attach process pmcs to the target process. */ 1263180148Sjkoshy if (args.pa_flags & (FLAG_HAS_TARGET | FLAG_HAS_COMMANDLINE)) { 1264169069Sjkoshy if (SLIST_EMPTY(&args.pa_targets)) 1265169069Sjkoshy errx(EX_DATAERR, "ERROR: No matching target " 1266169069Sjkoshy "processes."); 1267183672Sjkoshy if (args.pa_flags & FLAG_HAS_PROCESS_PMCS) 1268203790Sfabient pmcstat_attach_pmcs(); 1269168949Sjkoshy 1270169069Sjkoshy if (pmcstat_kvm) { 1271169069Sjkoshy kvm_close(pmcstat_kvm); 1272169069Sjkoshy pmcstat_kvm = NULL; 1273169069Sjkoshy } 1274169069Sjkoshy } 1275169069Sjkoshy 1276145256Sjkoshy /* start the pmcs */ 1277203790Sfabient pmcstat_start_pmcs(); 1278145256Sjkoshy 1279145256Sjkoshy /* start the (commandline) process if needed */ 1280147708Sjkoshy if (args.pa_flags & FLAG_HAS_COMMANDLINE) 1281168949Sjkoshy pmcstat_start_process(); 1282145256Sjkoshy 1283210794Sfabient /* initialize logging */ 1284210794Sfabient pmcstat_initialize_logging(); 1285147708Sjkoshy 1286145256Sjkoshy /* Handle SIGINT using the kqueue loop */ 1287145256Sjkoshy sa.sa_handler = SIG_IGN; 1288145256Sjkoshy sa.sa_flags = 0; 1289145256Sjkoshy (void) sigemptyset(&sa.sa_mask); 1290145256Sjkoshy 1291145256Sjkoshy if (sigaction(SIGINT, &sa, NULL) < 0) 1292145256Sjkoshy err(EX_OSERR, "ERROR: Cannot install signal handler"); 1293145256Sjkoshy 1294145256Sjkoshy /* 1295203790Sfabient * Setup the top mode display. 1296203790Sfabient */ 1297203790Sfabient if (args.pa_flags & FLAG_DO_TOP) { 1298203790Sfabient args.pa_flags &= ~FLAG_DO_PRINT; 1299203790Sfabient 1300203790Sfabient if (args.pa_toptty) { 1301203790Sfabient /* 1302203790Sfabient * Init ncurses. 1303203790Sfabient */ 1304203790Sfabient initscr(); 1305203790Sfabient if(has_colors() == TRUE) { 1306203790Sfabient args.pa_topcolor = 1; 1307203790Sfabient start_color(); 1308203790Sfabient use_default_colors(); 1309203790Sfabient pair_content(0, &cf, &cb); 1310203790Sfabient init_pair(1, COLOR_RED, cb); 1311203790Sfabient init_pair(2, COLOR_YELLOW, cb); 1312203790Sfabient init_pair(3, COLOR_GREEN, cb); 1313203790Sfabient } 1314203790Sfabient cbreak(); 1315203790Sfabient noecho(); 1316203790Sfabient nonl(); 1317203790Sfabient nodelay(stdscr, 1); 1318203790Sfabient intrflush(stdscr, FALSE); 1319203790Sfabient keypad(stdscr, TRUE); 1320203790Sfabient clear(); 1321204783Sfabient /* Get terminal width / height with ncurses. */ 1322204783Sfabient getmaxyx(stdscr, pmcstat_displayheight, pmcstat_displaywidth); 1323204783Sfabient pmcstat_displayheight--; pmcstat_displaywidth--; 1324203790Sfabient atexit(pmcstat_topexit); 1325203790Sfabient } 1326203790Sfabient } 1327203790Sfabient 1328203790Sfabient /* 1329145256Sjkoshy * loop till either the target process (if any) exits, or we 1330145256Sjkoshy * are killed by a SIGINT. 1331145256Sjkoshy */ 1332147191Sjkoshy runstate = PMCSTAT_RUNNING; 1333226514Sfabient do_print = do_read = 0; 1334145256Sjkoshy do { 1335145256Sjkoshy if ((c = kevent(pmcstat_kq, NULL, 0, &kev, 1, NULL)) <= 0) { 1336145256Sjkoshy if (errno != EINTR) 1337145256Sjkoshy err(EX_OSERR, "ERROR: kevent failed"); 1338145256Sjkoshy else 1339145256Sjkoshy continue; 1340145256Sjkoshy } 1341145256Sjkoshy 1342145256Sjkoshy if (kev.flags & EV_ERROR) 1343145256Sjkoshy errc(EX_OSERR, kev.data, "ERROR: kevent failed"); 1344145256Sjkoshy 1345145256Sjkoshy switch (kev.filter) { 1346147191Sjkoshy case EVFILT_PROC: /* target has exited */ 1347210794Sfabient runstate = pmcstat_close_log(); 1348148688Sjkoshy do_print = 1; 1349147191Sjkoshy break; 1350145256Sjkoshy 1351147191Sjkoshy case EVFILT_READ: /* log file data is present */ 1352210794Sfabient if (kev.ident == (unsigned)fileno(stdin) && 1353210794Sfabient (args.pa_flags & FLAG_DO_TOP)) { 1354203790Sfabient if (pmcstat_keypress_log()) 1355203790Sfabient runstate = pmcstat_close_log(); 1356226514Sfabient } else { 1357226514Sfabient do_read = 0; 1358203790Sfabient runstate = pmcstat_process_log(); 1359226514Sfabient } 1360145256Sjkoshy break; 1361145256Sjkoshy 1362145256Sjkoshy case EVFILT_SIGNAL: 1363147191Sjkoshy if (kev.ident == SIGCHLD) { 1364147191Sjkoshy /* 1365147191Sjkoshy * The child process sends us a 1366147191Sjkoshy * SIGCHLD if its exec() failed. We 1367147191Sjkoshy * wait for it to exit and then exit 1368147191Sjkoshy * ourselves. 1369147191Sjkoshy */ 1370147191Sjkoshy (void) wait(&c); 1371147191Sjkoshy runstate = PMCSTAT_FINISHED; 1372147191Sjkoshy } else if (kev.ident == SIGIO) { 1373147191Sjkoshy /* 1374147191Sjkoshy * We get a SIGIO if a PMC loses all 1375147191Sjkoshy * of its targets, or if logfile 1376147191Sjkoshy * writes encounter an error. 1377147191Sjkoshy */ 1378210794Sfabient runstate = pmcstat_close_log(); 1379147191Sjkoshy do_print = 1; /* print PMCs at exit */ 1380147191Sjkoshy } else if (kev.ident == SIGINT) { 1381147708Sjkoshy /* Kill the child process if we started it */ 1382147708Sjkoshy if (args.pa_flags & FLAG_HAS_COMMANDLINE) 1383203790Sfabient pmcstat_kill_process(); 1384210794Sfabient runstate = pmcstat_close_log(); 1385145256Sjkoshy } else if (kev.ident == SIGWINCH) { 1386147708Sjkoshy if (ioctl(fileno(args.pa_printfile), 1387145256Sjkoshy TIOCGWINSZ, &ws) < 0) 1388145256Sjkoshy err(EX_OSERR, "ERROR: Cannot determine " 1389145256Sjkoshy "window size"); 1390145256Sjkoshy pmcstat_displayheight = ws.ws_row - 1; 1391203790Sfabient pmcstat_displaywidth = ws.ws_col - 1; 1392145256Sjkoshy } else 1393145256Sjkoshy assert(0); 1394145256Sjkoshy 1395145256Sjkoshy break; 1396147191Sjkoshy 1397147191Sjkoshy case EVFILT_TIMER: /* print out counting PMCs */ 1398226514Sfabient if ((args.pa_flags & FLAG_DO_TOP) && 1399226986Sfabient pmc_flush_logfile() == 0) 1400226514Sfabient do_read = 1; 1401147191Sjkoshy do_print = 1; 1402147191Sjkoshy break; 1403147191Sjkoshy 1404145256Sjkoshy } 1405145256Sjkoshy 1406226514Sfabient if (do_print && !do_read) { 1407203790Sfabient if ((args.pa_required & FLAG_HAS_OUTPUT_LOGFILE) == 0) { 1408203790Sfabient pmcstat_print_pmcs(); 1409203790Sfabient if (runstate == PMCSTAT_FINISHED && /* final newline */ 1410203790Sfabient (args.pa_flags & FLAG_DO_PRINT) == 0) 1411203790Sfabient (void) fprintf(args.pa_printfile, "\n"); 1412203790Sfabient } 1413203790Sfabient if (args.pa_flags & FLAG_DO_TOP) 1414203790Sfabient pmcstat_display_log(); 1415147191Sjkoshy do_print = 0; 1416147191Sjkoshy } 1417145256Sjkoshy 1418147191Sjkoshy } while (runstate != PMCSTAT_FINISHED); 1419147191Sjkoshy 1420203790Sfabient if ((args.pa_flags & FLAG_DO_TOP) && args.pa_toptty) { 1421203790Sfabient pmcstat_topexit(); 1422203790Sfabient args.pa_toptty = 0; 1423203790Sfabient } 1424203790Sfabient 1425147191Sjkoshy /* flush any pending log entries */ 1426147708Sjkoshy if (args.pa_flags & (FLAG_HAS_OUTPUT_LOGFILE | FLAG_HAS_PIPE)) 1427226514Sfabient pmc_close_logfile(); 1428147191Sjkoshy 1429203790Sfabient pmcstat_cleanup(); 1430145256Sjkoshy 1431157144Sjkoshy free(args.pa_kernel); 1432157144Sjkoshy 1433151542Sjkoshy /* check if the driver lost any samples or events */ 1434151542Sjkoshy if (check_driver_stats) { 1435151542Sjkoshy if (pmc_get_driver_stats(&ds_end) < 0) 1436151542Sjkoshy err(EX_OSERR, "ERROR: Cannot retrieve driver " 1437151542Sjkoshy "statistics"); 1438157144Sjkoshy if (ds_start.pm_intr_bufferfull != ds_end.pm_intr_bufferfull && 1439157144Sjkoshy args.pa_verbosity > 0) 1440153704Sjkoshy warnx("WARNING: some samples were dropped. Please " 1441151542Sjkoshy "consider tuning the \"kern.hwpmc.nsamples\" " 1442151542Sjkoshy "tunable."); 1443151542Sjkoshy if (ds_start.pm_buffer_requests_failed != 1444157144Sjkoshy ds_end.pm_buffer_requests_failed && 1445157144Sjkoshy args.pa_verbosity > 0) 1446153704Sjkoshy warnx("WARNING: some events were discarded. Please " 1447151542Sjkoshy "consider tuning the \"kern.hwpmc.nbuffers\" " 1448151542Sjkoshy "tunable."); 1449151542Sjkoshy } 1450151542Sjkoshy 1451151542Sjkoshy exit(EX_OK); 1452145256Sjkoshy} 1453