pmcstat.c revision 230350
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 230350 2012-01-20 01:37:56Z eadler $"); 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. 101228990Suqs * - Receives 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) 159227524Sobrien errx(EX_USAGE, 160227524Sobrien "ERROR: Illegal CPU specification \"%s\".", 161227524Sobrien cpuspec); 162224698Sattilio CPU_SET(cpu, cpumask); 163224698Sattilio s = end + strspn(end, ", \t"); 164224698Sattilio } while (*s); 165224698Sattilio} 166224698Sattilio 167168949Sjkoshyvoid 168203790Sfabientpmcstat_attach_pmcs(void) 169168949Sjkoshy{ 170168949Sjkoshy struct pmcstat_ev *ev; 171169069Sjkoshy struct pmcstat_target *pt; 172169069Sjkoshy int count; 173145256Sjkoshy 174169069Sjkoshy /* Attach all process PMCs to target processes. */ 175169069Sjkoshy count = 0; 176203790Sfabient STAILQ_FOREACH(ev, &args.pa_events, ev_next) { 177169069Sjkoshy if (PMC_IS_SYSTEM_MODE(ev->ev_mode)) 178169069Sjkoshy continue; 179203790Sfabient SLIST_FOREACH(pt, &args.pa_targets, pt_next) 180169069Sjkoshy if (pmc_attach(ev->ev_pmcid, pt->pt_pid) == 0) 181169069Sjkoshy count++; 182169069Sjkoshy else if (errno != ESRCH) 183227524Sobrien err(EX_OSERR, 184227524Sobrien"ERROR: cannot attach pmc \"%s\" to process %d", 185227524Sobrien ev->ev_name, (int)pt->pt_pid); 186169069Sjkoshy } 187168949Sjkoshy 188169069Sjkoshy if (count == 0) 189169069Sjkoshy errx(EX_DATAERR, "ERROR: No processes were attached to."); 190168949Sjkoshy} 191168949Sjkoshy 192168949Sjkoshy 193145256Sjkoshyvoid 194203790Sfabientpmcstat_cleanup(void) 195145256Sjkoshy{ 196145256Sjkoshy struct pmcstat_ev *ev, *tmp; 197145256Sjkoshy 198145256Sjkoshy /* release allocated PMCs. */ 199203790Sfabient STAILQ_FOREACH_SAFE(ev, &args.pa_events, ev_next, tmp) 200145256Sjkoshy if (ev->ev_pmcid != PMC_ID_INVALID) { 201185079Sjkoshy if (pmc_stop(ev->ev_pmcid) < 0) 202227524Sobrien err(EX_OSERR, "ERROR: cannot stop pmc 0x%x \"%s\"", 203227524Sobrien ev->ev_pmcid, ev->ev_name); 204145256Sjkoshy if (pmc_release(ev->ev_pmcid) < 0) 205227524Sobrien err(EX_OSERR, "ERROR: cannot release pmc 0x%x \"%s\"", 206227524Sobrien ev->ev_pmcid, ev->ev_name); 207145256Sjkoshy free(ev->ev_name); 208145256Sjkoshy free(ev->ev_spec); 209203790Sfabient STAILQ_REMOVE(&args.pa_events, ev, pmcstat_ev, ev_next); 210145256Sjkoshy free(ev); 211145256Sjkoshy } 212147191Sjkoshy 213147863Sjkoshy /* de-configure the log file if present. */ 214203790Sfabient if (args.pa_flags & (FLAG_HAS_PIPE | FLAG_HAS_OUTPUT_LOGFILE)) 215147863Sjkoshy (void) pmc_configure_logfile(-1); 216147863Sjkoshy 217203790Sfabient if (args.pa_logparser) { 218203790Sfabient pmclog_close(args.pa_logparser); 219203790Sfabient args.pa_logparser = NULL; 220147191Sjkoshy } 221147708Sjkoshy 222210794Sfabient pmcstat_shutdown_logging(); 223145256Sjkoshy} 224145256Sjkoshy 225145256Sjkoshyvoid 226203790Sfabientpmcstat_create_process(void) 227168949Sjkoshy{ 228168949Sjkoshy char token; 229169069Sjkoshy pid_t pid; 230168949Sjkoshy struct kevent kev; 231169069Sjkoshy struct pmcstat_target *pt; 232168949Sjkoshy 233168949Sjkoshy if (socketpair(AF_UNIX, SOCK_STREAM, 0, pmcstat_sockpair) < 0) 234168949Sjkoshy err(EX_OSERR, "ERROR: cannot create socket pair"); 235168949Sjkoshy 236169069Sjkoshy switch (pid = fork()) { 237168949Sjkoshy case -1: 238168949Sjkoshy err(EX_OSERR, "ERROR: cannot fork"); 239168949Sjkoshy /*NOTREACHED*/ 240168949Sjkoshy 241168949Sjkoshy case 0: /* child */ 242168949Sjkoshy (void) close(pmcstat_sockpair[PARENTSOCKET]); 243168949Sjkoshy 244168949Sjkoshy /* Write a token to tell our parent we've started executing. */ 245168949Sjkoshy if (write(pmcstat_sockpair[CHILDSOCKET], "+", 1) != 1) 246168949Sjkoshy err(EX_OSERR, "ERROR (child): cannot write token"); 247168949Sjkoshy 248168949Sjkoshy /* Wait for our parent to signal us to start. */ 249168949Sjkoshy if (read(pmcstat_sockpair[CHILDSOCKET], &token, 1) < 0) 250168949Sjkoshy err(EX_OSERR, "ERROR (child): cannot read token"); 251168949Sjkoshy (void) close(pmcstat_sockpair[CHILDSOCKET]); 252168949Sjkoshy 253168949Sjkoshy /* exec() the program requested */ 254203790Sfabient execvp(*args.pa_argv, args.pa_argv); 255168949Sjkoshy /* and if that fails, notify the parent */ 256168949Sjkoshy kill(getppid(), SIGCHLD); 257203790Sfabient err(EX_OSERR, "ERROR: execvp \"%s\" failed", *args.pa_argv); 258168949Sjkoshy /*NOTREACHED*/ 259168949Sjkoshy 260168949Sjkoshy default: /* parent */ 261168949Sjkoshy (void) close(pmcstat_sockpair[CHILDSOCKET]); 262168949Sjkoshy break; 263168949Sjkoshy } 264168949Sjkoshy 265168949Sjkoshy /* Ask to be notified via a kevent when the target process exits. */ 266169069Sjkoshy EV_SET(&kev, pid, EVFILT_PROC, EV_ADD|EV_ONESHOT, NOTE_EXIT, 0, 267168949Sjkoshy NULL); 268168949Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 269169069Sjkoshy err(EX_OSERR, "ERROR: cannot monitor child process %d", pid); 270168949Sjkoshy 271169069Sjkoshy if ((pt = malloc(sizeof(*pt))) == NULL) 272169069Sjkoshy errx(EX_SOFTWARE, "ERROR: Out of memory."); 273169069Sjkoshy 274169069Sjkoshy pt->pt_pid = pid; 275203790Sfabient SLIST_INSERT_HEAD(&args.pa_targets, pt, pt_next); 276169069Sjkoshy 277168949Sjkoshy /* Wait for the child to signal that its ready to go. */ 278168949Sjkoshy if (read(pmcstat_sockpair[PARENTSOCKET], &token, 1) < 0) 279168949Sjkoshy err(EX_OSERR, "ERROR (parent): cannot read token"); 280168949Sjkoshy 281168949Sjkoshy return; 282168949Sjkoshy} 283168949Sjkoshy 284169069Sjkoshyvoid 285203790Sfabientpmcstat_find_targets(const char *spec) 286169069Sjkoshy{ 287169069Sjkoshy int n, nproc, pid, rv; 288169069Sjkoshy struct pmcstat_target *pt; 289169069Sjkoshy char errbuf[_POSIX2_LINE_MAX], *end; 290169069Sjkoshy static struct kinfo_proc *kp; 291169069Sjkoshy regex_t reg; 292169069Sjkoshy regmatch_t regmatch; 293169069Sjkoshy 294169069Sjkoshy /* First check if we've been given a process id. */ 295169069Sjkoshy pid = strtol(spec, &end, 0); 296169069Sjkoshy if (end != spec && pid >= 0) { 297169069Sjkoshy if ((pt = malloc(sizeof(*pt))) == NULL) 298169069Sjkoshy goto outofmemory; 299169069Sjkoshy pt->pt_pid = pid; 300203790Sfabient SLIST_INSERT_HEAD(&args.pa_targets, pt, pt_next); 301169069Sjkoshy return; 302169069Sjkoshy } 303169069Sjkoshy 304169069Sjkoshy /* Otherwise treat arg as a regular expression naming processes. */ 305169069Sjkoshy if (pmcstat_kvm == NULL) { 306169069Sjkoshy if ((pmcstat_kvm = kvm_openfiles(NULL, "/dev/null", NULL, 0, 307169069Sjkoshy errbuf)) == NULL) 308169069Sjkoshy err(EX_OSERR, "ERROR: Cannot open kernel \"%s\"", 309169069Sjkoshy errbuf); 310169069Sjkoshy if ((pmcstat_plist = kvm_getprocs(pmcstat_kvm, KERN_PROC_PROC, 311169069Sjkoshy 0, &nproc)) == NULL) 312169069Sjkoshy err(EX_OSERR, "ERROR: Cannot get process list: %s", 313169069Sjkoshy kvm_geterr(pmcstat_kvm)); 314208858Sfabient } else 315208858Sfabient nproc = 0; 316169069Sjkoshy 317169069Sjkoshy if ((rv = regcomp(®, spec, REG_EXTENDED|REG_NOSUB)) != 0) { 318169069Sjkoshy regerror(rv, ®, errbuf, sizeof(errbuf)); 319169069Sjkoshy err(EX_DATAERR, "ERROR: Failed to compile regex \"%s\": %s", 320169069Sjkoshy spec, errbuf); 321169069Sjkoshy } 322169069Sjkoshy 323169069Sjkoshy for (n = 0, kp = pmcstat_plist; n < nproc; n++, kp++) { 324169069Sjkoshy if ((rv = regexec(®, kp->ki_comm, 1, ®match, 0)) == 0) { 325169069Sjkoshy if ((pt = malloc(sizeof(*pt))) == NULL) 326169069Sjkoshy goto outofmemory; 327169069Sjkoshy pt->pt_pid = kp->ki_pid; 328203790Sfabient SLIST_INSERT_HEAD(&args.pa_targets, pt, pt_next); 329169069Sjkoshy } else if (rv != REG_NOMATCH) { 330169069Sjkoshy regerror(rv, ®, errbuf, sizeof(errbuf)); 331169069Sjkoshy errx(EX_SOFTWARE, "ERROR: Regex evalation failed: %s", 332169069Sjkoshy errbuf); 333169069Sjkoshy } 334169069Sjkoshy } 335169069Sjkoshy 336169069Sjkoshy regfree(®); 337169069Sjkoshy 338169069Sjkoshy return; 339169069Sjkoshy 340169069Sjkoshy outofmemory: 341169069Sjkoshy errx(EX_SOFTWARE, "Out of memory."); 342169069Sjkoshy /*NOTREACHED*/ 343169069Sjkoshy} 344169069Sjkoshy 345168949Sjkoshyvoid 346203790Sfabientpmcstat_kill_process(void) 347169069Sjkoshy{ 348169069Sjkoshy struct pmcstat_target *pt; 349169069Sjkoshy 350203790Sfabient assert(args.pa_flags & FLAG_HAS_COMMANDLINE); 351169069Sjkoshy 352169069Sjkoshy /* 353169069Sjkoshy * If a command line was specified, it would be the very first 354169069Sjkoshy * in the list, before any other processes specified by -t. 355169069Sjkoshy */ 356203790Sfabient pt = SLIST_FIRST(&args.pa_targets); 357169069Sjkoshy assert(pt != NULL); 358169069Sjkoshy 359169069Sjkoshy if (kill(pt->pt_pid, SIGINT) != 0) 360169069Sjkoshy err(EX_OSERR, "ERROR: cannot signal child process"); 361169069Sjkoshy} 362169069Sjkoshy 363169069Sjkoshyvoid 364203790Sfabientpmcstat_start_pmcs(void) 365145256Sjkoshy{ 366145256Sjkoshy struct pmcstat_ev *ev; 367145256Sjkoshy 368169069Sjkoshy STAILQ_FOREACH(ev, &args.pa_events, ev_next) { 369145256Sjkoshy 370145256Sjkoshy assert(ev->ev_pmcid != PMC_ID_INVALID); 371145256Sjkoshy 372145256Sjkoshy if (pmc_start(ev->ev_pmcid) < 0) { 373147191Sjkoshy warn("ERROR: Cannot start pmc 0x%x \"%s\"", 374145256Sjkoshy ev->ev_pmcid, ev->ev_name); 375203790Sfabient pmcstat_cleanup(); 376147191Sjkoshy exit(EX_OSERR); 377145256Sjkoshy } 378145256Sjkoshy } 379145256Sjkoshy 380145256Sjkoshy} 381145256Sjkoshy 382145256Sjkoshyvoid 383203790Sfabientpmcstat_print_headers(void) 384145256Sjkoshy{ 385145256Sjkoshy struct pmcstat_ev *ev; 386168949Sjkoshy int c, w; 387145256Sjkoshy 388203790Sfabient (void) fprintf(args.pa_printfile, PRINT_HEADER_PREFIX); 389145256Sjkoshy 390203790Sfabient STAILQ_FOREACH(ev, &args.pa_events, ev_next) { 391145256Sjkoshy if (PMC_IS_SAMPLING_MODE(ev->ev_mode)) 392145256Sjkoshy continue; 393145256Sjkoshy 394145256Sjkoshy c = PMC_IS_SYSTEM_MODE(ev->ev_mode) ? 's' : 'p'; 395145256Sjkoshy 396168949Sjkoshy if (ev->ev_fieldskip != 0) 397203790Sfabient (void) fprintf(args.pa_printfile, "%*s", 398168949Sjkoshy ev->ev_fieldskip, ""); 399168949Sjkoshy w = ev->ev_fieldwidth - ev->ev_fieldskip - 2; 400168949Sjkoshy 401168949Sjkoshy if (c == 's') 402203790Sfabient (void) fprintf(args.pa_printfile, "s/%02d/%-*s ", 403168949Sjkoshy ev->ev_cpu, w-3, ev->ev_name); 404168949Sjkoshy else 405203790Sfabient (void) fprintf(args.pa_printfile, "p/%*s ", w, 406145256Sjkoshy ev->ev_name); 407145256Sjkoshy } 408145256Sjkoshy 409203790Sfabient (void) fflush(args.pa_printfile); 410145256Sjkoshy} 411145256Sjkoshy 412145256Sjkoshyvoid 413203790Sfabientpmcstat_print_counters(void) 414145256Sjkoshy{ 415145256Sjkoshy int extra_width; 416145256Sjkoshy struct pmcstat_ev *ev; 417145256Sjkoshy pmc_value_t value; 418145256Sjkoshy 419145256Sjkoshy extra_width = sizeof(PRINT_HEADER_PREFIX) - 1; 420145256Sjkoshy 421203790Sfabient STAILQ_FOREACH(ev, &args.pa_events, ev_next) { 422145256Sjkoshy 423145256Sjkoshy /* skip sampling mode counters */ 424145256Sjkoshy if (PMC_IS_SAMPLING_MODE(ev->ev_mode)) 425145256Sjkoshy continue; 426145256Sjkoshy 427145256Sjkoshy if (pmc_read(ev->ev_pmcid, &value) < 0) 428227524Sobrien err(EX_OSERR, "ERROR: Cannot read pmc \"%s\"", 429227524Sobrien ev->ev_name); 430145256Sjkoshy 431203790Sfabient (void) fprintf(args.pa_printfile, "%*ju ", 432147708Sjkoshy ev->ev_fieldwidth + extra_width, 433147708Sjkoshy (uintmax_t) ev->ev_cumulative ? value : 434147708Sjkoshy (value - ev->ev_saved)); 435147708Sjkoshy 436145256Sjkoshy if (ev->ev_cumulative == 0) 437145256Sjkoshy ev->ev_saved = value; 438145256Sjkoshy extra_width = 0; 439145256Sjkoshy } 440145256Sjkoshy 441203790Sfabient (void) fflush(args.pa_printfile); 442145256Sjkoshy} 443145256Sjkoshy 444145256Sjkoshy/* 445145256Sjkoshy * Print output 446145256Sjkoshy */ 447145256Sjkoshy 448145256Sjkoshyvoid 449203790Sfabientpmcstat_print_pmcs(void) 450145256Sjkoshy{ 451145256Sjkoshy static int linecount = 0; 452145256Sjkoshy 453147708Sjkoshy /* check if we need to print a header line */ 454145256Sjkoshy if (++linecount > pmcstat_displayheight) { 455203790Sfabient (void) fprintf(args.pa_printfile, "\n"); 456145256Sjkoshy linecount = 1; 457145256Sjkoshy } 458145256Sjkoshy if (linecount == 1) 459203790Sfabient pmcstat_print_headers(); 460203790Sfabient (void) fprintf(args.pa_printfile, "\n"); 461145256Sjkoshy 462203790Sfabient pmcstat_print_counters(); 463145256Sjkoshy 464145256Sjkoshy return; 465145256Sjkoshy} 466145256Sjkoshy 467145256Sjkoshy/* 468145256Sjkoshy * Do process profiling 469145256Sjkoshy * 470145256Sjkoshy * If a pid was specified, attach each allocated PMC to the target 471145256Sjkoshy * process. Otherwise, fork a child and attach the PMCs to the child, 472145256Sjkoshy * and have the child exec() the target program. 473145256Sjkoshy */ 474145256Sjkoshy 475145256Sjkoshyvoid 476168949Sjkoshypmcstat_start_process(void) 477145256Sjkoshy{ 478168949Sjkoshy /* Signal the child to proceed. */ 479168949Sjkoshy if (write(pmcstat_sockpair[PARENTSOCKET], "!", 1) != 1) 480168949Sjkoshy err(EX_OSERR, "ERROR (parent): write of token failed"); 481145256Sjkoshy 482168949Sjkoshy (void) close(pmcstat_sockpair[PARENTSOCKET]); 483145256Sjkoshy} 484145256Sjkoshy 485145256Sjkoshyvoid 486145256Sjkoshypmcstat_show_usage(void) 487145256Sjkoshy{ 488145256Sjkoshy errx(EX_USAGE, 489145256Sjkoshy "[options] [commandline]\n" 490145256Sjkoshy "\t Measure process and/or system performance using hardware\n" 491145256Sjkoshy "\t performance monitoring counters.\n" 492145256Sjkoshy "\t Options include:\n" 493147191Sjkoshy "\t -C\t\t (toggle) show cumulative counts\n" 494147191Sjkoshy "\t -D path\t create profiles in directory \"path\"\n" 495147191Sjkoshy "\t -E\t\t (toggle) show counts at process exit\n" 496203790Sfabient "\t -F file\t write a system-wide callgraph (Kcachegrind format)" 497203790Sfabient " to \"file\"\n" 498174396Sjkoshy "\t -G file\t write a system-wide callgraph to \"file\"\n" 499157144Sjkoshy "\t -M file\t print executable/gmon file map to \"file\"\n" 500174396Sjkoshy "\t -N\t\t (toggle) capture callchains\n" 501147191Sjkoshy "\t -O file\t send log output to \"file\"\n" 502147191Sjkoshy "\t -P spec\t allocate a process-private sampling PMC\n" 503147191Sjkoshy "\t -R file\t read events from \"file\"\n" 504147191Sjkoshy "\t -S spec\t allocate a system-wide sampling PMC\n" 505203790Sfabient "\t -T\t\t start in top mode\n" 506147191Sjkoshy "\t -W\t\t (toggle) show counts per context switch\n" 507168949Sjkoshy "\t -c cpu-list\t set cpus for subsequent system-wide PMCs\n" 508147191Sjkoshy "\t -d\t\t (toggle) track descendants\n" 509203790Sfabient "\t -f spec\t pass \"spec\" to as plugin option\n" 510147191Sjkoshy "\t -g\t\t produce gprof(1) compatible profiles\n" 511162804Sru "\t -k dir\t\t set the path to the kernel\n" 512145256Sjkoshy "\t -n rate\t set sampling rate\n" 513145256Sjkoshy "\t -o file\t send print output to \"file\"\n" 514147191Sjkoshy "\t -p spec\t allocate a process-private counting PMC\n" 515157144Sjkoshy "\t -q\t\t suppress verbosity\n" 516157144Sjkoshy "\t -r fsroot\t specify FS root directory\n" 517147191Sjkoshy "\t -s spec\t allocate a system-wide counting PMC\n" 518183186Sjkoshy "\t -t process-spec attach to running processes matching " 519183186Sjkoshy "\"process-spec\"\n" 520157144Sjkoshy "\t -v\t\t increase verbosity\n" 521174396Sjkoshy "\t -w secs\t set printing time interval\n" 522174396Sjkoshy "\t -z depth\t limit callchain display depth" 523145256Sjkoshy ); 524145256Sjkoshy} 525145256Sjkoshy 526145256Sjkoshy/* 527203790Sfabient * At exit handler for top mode 528203790Sfabient */ 529203790Sfabient 530203790Sfabientvoid 531203790Sfabientpmcstat_topexit(void) 532203790Sfabient{ 533203790Sfabient if (!args.pa_toptty) 534203790Sfabient return; 535203790Sfabient 536203790Sfabient /* 537203790Sfabient * Shutdown ncurses. 538203790Sfabient */ 539203790Sfabient clrtoeol(); 540203790Sfabient refresh(); 541203790Sfabient endwin(); 542203790Sfabient} 543203790Sfabient 544203790Sfabient/* 545145256Sjkoshy * Main 546145256Sjkoshy */ 547145256Sjkoshy 548145256Sjkoshyint 549145256Sjkoshymain(int argc, char **argv) 550145256Sjkoshy{ 551224698Sattilio cpuset_t cpumask; 552145256Sjkoshy double interval; 553224698Sattilio int hcpu, option, npmc, ncpu; 554230350Seadler int c, check_driver_stats, current_sampling_count; 555174396Sjkoshy int do_callchain, do_descendants, do_logproccsw, do_logprocexit; 556226514Sfabient int do_print, do_read; 557168949Sjkoshy size_t dummy; 558174396Sjkoshy int graphdepth; 559210794Sfabient int pipefd[2], rfd; 560147191Sjkoshy int use_cumulative_counts; 561203790Sfabient short cf, cb; 562157144Sjkoshy char *end, *tmp; 563174396Sjkoshy const char *errmsg, *graphfilename; 564147191Sjkoshy enum pmcstat_state runstate; 565151542Sjkoshy struct pmc_driverstats ds_start, ds_end; 566145256Sjkoshy struct pmcstat_ev *ev; 567145256Sjkoshy struct sigaction sa; 568145256Sjkoshy struct kevent kev; 569145256Sjkoshy struct winsize ws; 570147708Sjkoshy struct stat sb; 571157144Sjkoshy char buffer[PATH_MAX]; 572145256Sjkoshy 573151542Sjkoshy check_driver_stats = 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)) 644227524Sobrien errx(EX_USAGE, 645227524Sobrien "ERROR: \"%s\" is not a directory.", 646227524Sobrien optarg); 647147708Sjkoshy args.pa_samplesdir = optarg; 648147708Sjkoshy args.pa_flags |= FLAG_HAS_SAMPLESDIR; 649147708Sjkoshy args.pa_required |= FLAG_DO_GPROF; 650147708Sjkoshy break; 651147708Sjkoshy 652145256Sjkoshy case 'd': /* toggle descendents */ 653145256Sjkoshy do_descendants = !do_descendants; 654147191Sjkoshy args.pa_required |= FLAG_HAS_PROCESS_PMCS; 655145256Sjkoshy break; 656145256Sjkoshy 657203790Sfabient case 'F': /* produce a system-wide calltree */ 658203790Sfabient args.pa_flags |= FLAG_DO_CALLGRAPHS; 659203790Sfabient args.pa_plugin = PMCSTAT_PL_CALLTREE; 660203790Sfabient graphfilename = optarg; 661203790Sfabient break; 662203790Sfabient 663203790Sfabient case 'f': /* plugins options */ 664203790Sfabient if (args.pa_plugin == PMCSTAT_PL_NONE) 665203790Sfabient err(EX_USAGE, "ERROR: Need -g/-G/-m/-T."); 666203790Sfabient pmcstat_pluginconfigure_log(optarg); 667203790Sfabient break; 668203790Sfabient 669174396Sjkoshy case 'G': /* produce a system-wide callgraph */ 670174396Sjkoshy args.pa_flags |= FLAG_DO_CALLGRAPHS; 671203790Sfabient args.pa_plugin = PMCSTAT_PL_CALLGRAPH; 672174396Sjkoshy graphfilename = optarg; 673174396Sjkoshy break; 674174396Sjkoshy 675147191Sjkoshy case 'g': /* produce gprof compatible profiles */ 676147191Sjkoshy args.pa_flags |= FLAG_DO_GPROF; 677203790Sfabient args.pa_pplugin = PMCSTAT_PL_CALLGRAPH; 678203790Sfabient args.pa_plugin = PMCSTAT_PL_GPROF; 679147191Sjkoshy break; 680147191Sjkoshy 681147708Sjkoshy case 'k': /* pathname to the kernel */ 682157144Sjkoshy free(args.pa_kernel); 683157144Sjkoshy args.pa_kernel = strdup(optarg); 684174396Sjkoshy args.pa_required |= FLAG_DO_ANALYSIS; 685147708Sjkoshy args.pa_flags |= FLAG_HAS_KERNELPATH; 686147191Sjkoshy break; 687147191Sjkoshy 688185322Sattilio case 'm': 689203790Sfabient args.pa_flags |= FLAG_DO_ANNOTATE; 690203790Sfabient args.pa_plugin = PMCSTAT_PL_ANNOTATE; 691203790Sfabient graphfilename = optarg; 692185322Sattilio break; 693185322Sattilio 694147191Sjkoshy case 'E': /* log process exit */ 695147191Sjkoshy do_logprocexit = !do_logprocexit; 696147191Sjkoshy args.pa_required |= (FLAG_HAS_PROCESS_PMCS | 697147708Sjkoshy FLAG_HAS_COUNTING_PMCS | FLAG_HAS_OUTPUT_LOGFILE); 698147191Sjkoshy break; 699147191Sjkoshy 700157144Sjkoshy case 'M': /* mapfile */ 701157144Sjkoshy args.pa_mapfilename = optarg; 702157144Sjkoshy break; 703157144Sjkoshy 704174396Sjkoshy case 'N': 705174396Sjkoshy do_callchain = !do_callchain; 706174396Sjkoshy args.pa_required |= FLAG_HAS_SAMPLING_PMCS; 707174396Sjkoshy break; 708174396Sjkoshy 709145256Sjkoshy case 'p': /* process virtual counting PMC */ 710145256Sjkoshy case 's': /* system-wide counting PMC */ 711145256Sjkoshy case 'P': /* process virtual sampling PMC */ 712145256Sjkoshy case 'S': /* system-wide sampling PMC */ 713145256Sjkoshy if ((ev = malloc(sizeof(*ev))) == NULL) 714147191Sjkoshy errx(EX_SOFTWARE, "ERROR: Out of memory."); 715145256Sjkoshy 716145256Sjkoshy switch (option) { 717145256Sjkoshy case 'p': ev->ev_mode = PMC_MODE_TC; break; 718145256Sjkoshy case 's': ev->ev_mode = PMC_MODE_SC; break; 719145256Sjkoshy case 'P': ev->ev_mode = PMC_MODE_TS; break; 720145256Sjkoshy case 'S': ev->ev_mode = PMC_MODE_SS; break; 721145256Sjkoshy } 722145256Sjkoshy 723147191Sjkoshy if (option == 'P' || option == 'p') { 724147191Sjkoshy args.pa_flags |= FLAG_HAS_PROCESS_PMCS; 725147708Sjkoshy args.pa_required |= (FLAG_HAS_COMMANDLINE | 726169069Sjkoshy FLAG_HAS_TARGET); 727147191Sjkoshy } 728145256Sjkoshy 729147191Sjkoshy if (option == 'P' || option == 'S') { 730147191Sjkoshy args.pa_flags |= FLAG_HAS_SAMPLING_PMCS; 731147708Sjkoshy args.pa_required |= (FLAG_HAS_PIPE | 732147708Sjkoshy FLAG_HAS_OUTPUT_LOGFILE); 733147191Sjkoshy } 734145256Sjkoshy 735145256Sjkoshy if (option == 'p' || option == 's') 736147191Sjkoshy args.pa_flags |= FLAG_HAS_COUNTING_PMCS; 737145256Sjkoshy 738147191Sjkoshy if (option == 's' || option == 'S') 739147191Sjkoshy args.pa_flags |= FLAG_HAS_SYSTEM_PMCS; 740147191Sjkoshy 741145256Sjkoshy ev->ev_spec = strdup(optarg); 742145256Sjkoshy 743145256Sjkoshy if (option == 'S' || option == 'P') 744145256Sjkoshy ev->ev_count = current_sampling_count; 745145256Sjkoshy else 746145256Sjkoshy ev->ev_count = -1; 747145256Sjkoshy 748224698Sattilio if (option == 'S' || option == 's') { 749224698Sattilio hcpu = sizeof(cpumask) * NBBY; 750224698Sattilio for (hcpu--; hcpu >= 0; hcpu--) 751224698Sattilio if (CPU_ISSET(hcpu, &cpumask)) 752224698Sattilio break; 753224698Sattilio ev->ev_cpu = hcpu; 754224698Sattilio } else 755145256Sjkoshy ev->ev_cpu = PMC_CPU_ANY; 756145256Sjkoshy 757147191Sjkoshy ev->ev_flags = 0; 758174396Sjkoshy if (do_callchain) 759174396Sjkoshy ev->ev_flags |= PMC_F_CALLCHAIN; 760147191Sjkoshy if (do_descendants) 761147191Sjkoshy ev->ev_flags |= PMC_F_DESCENDANTS; 762147191Sjkoshy if (do_logprocexit) 763147191Sjkoshy ev->ev_flags |= PMC_F_LOG_PROCEXIT; 764147191Sjkoshy if (do_logproccsw) 765147191Sjkoshy ev->ev_flags |= PMC_F_LOG_PROCCSW; 766147191Sjkoshy 767145256Sjkoshy ev->ev_cumulative = use_cumulative_counts; 768145256Sjkoshy 769145256Sjkoshy ev->ev_saved = 0LL; 770145256Sjkoshy ev->ev_pmcid = PMC_ID_INVALID; 771145256Sjkoshy 772145256Sjkoshy /* extract event name */ 773145256Sjkoshy c = strcspn(optarg, ", \t"); 774145256Sjkoshy ev->ev_name = malloc(c + 1); 775145256Sjkoshy (void) strncpy(ev->ev_name, optarg, c); 776145256Sjkoshy *(ev->ev_name + c) = '\0'; 777145256Sjkoshy 778169069Sjkoshy STAILQ_INSERT_TAIL(&args.pa_events, ev, ev_next); 779145256Sjkoshy 780224698Sattilio if (option == 's' || option == 'S') { 781224698Sattilio hcpu = CPU_ISSET(ev->ev_cpu, &cpumask); 782224698Sattilio CPU_CLR(ev->ev_cpu, &cpumask); 783224698Sattilio pmcstat_clone_event_descriptor(ev, &cpumask); 784224698Sattilio if (hcpu != 0) 785224698Sattilio CPU_SET(ev->ev_cpu, &cpumask); 786224698Sattilio } 787168949Sjkoshy 788145256Sjkoshy break; 789145256Sjkoshy 790145256Sjkoshy case 'n': /* sampling count */ 791145256Sjkoshy current_sampling_count = strtol(optarg, &end, 0); 792145256Sjkoshy if (*end != '\0' || current_sampling_count <= 0) 793145256Sjkoshy errx(EX_USAGE, 794147191Sjkoshy "ERROR: Illegal count value \"%s\".", 795145256Sjkoshy optarg); 796147191Sjkoshy args.pa_required |= FLAG_HAS_SAMPLING_PMCS; 797145256Sjkoshy break; 798145256Sjkoshy 799145256Sjkoshy case 'o': /* outputfile */ 800226986Sfabient if (args.pa_printfile != NULL && 801226986Sfabient args.pa_printfile != stdout && 802226986Sfabient args.pa_printfile != stderr) 803147708Sjkoshy (void) fclose(args.pa_printfile); 804147708Sjkoshy if ((args.pa_printfile = fopen(optarg, "w")) == NULL) 805227524Sobrien errx(EX_OSERR, 806227524Sobrien "ERROR: cannot open \"%s\" for writing.", 807227524Sobrien optarg); 808147708Sjkoshy args.pa_flags |= FLAG_DO_PRINT; 809147191Sjkoshy break; 810145256Sjkoshy 811145256Sjkoshy case 'O': /* sampling output */ 812147708Sjkoshy if (args.pa_outputpath) 813227524Sobrien errx(EX_USAGE, 814227524Sobrien"ERROR: option -O may only be specified once."); 815147708Sjkoshy args.pa_outputpath = optarg; 816147708Sjkoshy args.pa_flags |= FLAG_HAS_OUTPUT_LOGFILE; 817145256Sjkoshy break; 818145256Sjkoshy 819157144Sjkoshy case 'q': /* quiet mode */ 820157144Sjkoshy args.pa_verbosity = 0; 821157144Sjkoshy break; 822157144Sjkoshy 823157144Sjkoshy case 'r': /* root FS path */ 824157144Sjkoshy args.pa_fsroot = optarg; 825157144Sjkoshy break; 826157144Sjkoshy 827147708Sjkoshy case 'R': /* read an existing log file */ 828174396Sjkoshy if (args.pa_inputpath != NULL) 829227524Sobrien errx(EX_USAGE, 830227524Sobrien"ERROR: option -R may only be specified once."); 831147708Sjkoshy args.pa_inputpath = optarg; 832147708Sjkoshy if (args.pa_printfile == stderr) 833147708Sjkoshy args.pa_printfile = stdout; 834147708Sjkoshy args.pa_flags |= FLAG_READ_LOGFILE; 835147708Sjkoshy break; 836147708Sjkoshy 837169069Sjkoshy case 't': /* target pid or process name */ 838203790Sfabient pmcstat_find_targets(optarg); 839145256Sjkoshy 840169069Sjkoshy args.pa_flags |= FLAG_HAS_TARGET; 841147191Sjkoshy args.pa_required |= FLAG_HAS_PROCESS_PMCS; 842145256Sjkoshy break; 843145256Sjkoshy 844203790Sfabient case 'T': /* top mode */ 845203790Sfabient args.pa_flags |= FLAG_DO_TOP; 846203790Sfabient args.pa_plugin = PMCSTAT_PL_CALLGRAPH; 847203790Sfabient args.pa_ctdumpinstr = 0; 848203790Sfabient args.pa_mergepmc = 1; 849203790Sfabient if (args.pa_printfile == stderr) 850203790Sfabient args.pa_printfile = stdout; 851203790Sfabient break; 852203790Sfabient 853157144Sjkoshy case 'v': /* verbose */ 854157144Sjkoshy args.pa_verbosity++; 855157144Sjkoshy break; 856157144Sjkoshy 857145256Sjkoshy case 'w': /* wait interval */ 858145256Sjkoshy interval = strtod(optarg, &end); 859145256Sjkoshy if (*end != '\0' || interval <= 0) 860227524Sobrien errx(EX_USAGE, 861227524Sobrien"ERROR: Illegal wait interval value \"%s\".", 862227524Sobrien optarg); 863145256Sjkoshy args.pa_flags |= FLAG_HAS_WAIT_INTERVAL; 864145256Sjkoshy args.pa_interval = interval; 865147191Sjkoshy break; 866145256Sjkoshy 867147191Sjkoshy case 'W': /* toggle LOG_CSW */ 868147191Sjkoshy do_logproccsw = !do_logproccsw; 869147191Sjkoshy args.pa_required |= (FLAG_HAS_PROCESS_PMCS | 870147708Sjkoshy FLAG_HAS_COUNTING_PMCS | FLAG_HAS_OUTPUT_LOGFILE); 871145256Sjkoshy break; 872145256Sjkoshy 873174396Sjkoshy case 'z': 874174396Sjkoshy graphdepth = strtod(optarg, &end); 875174396Sjkoshy if (*end != '\0' || graphdepth <= 0) 876227524Sobrien errx(EX_USAGE, 877227524Sobrien "ERROR: Illegal callchain depth \"%s\".", 878227524Sobrien optarg); 879174396Sjkoshy args.pa_graphdepth = graphdepth; 880174396Sjkoshy args.pa_required |= FLAG_DO_CALLGRAPHS; 881174396Sjkoshy break; 882174396Sjkoshy 883145256Sjkoshy case '?': 884145256Sjkoshy default: 885145256Sjkoshy pmcstat_show_usage(); 886145256Sjkoshy break; 887145256Sjkoshy 888145256Sjkoshy } 889145256Sjkoshy 890145256Sjkoshy args.pa_argc = (argc -= optind); 891145256Sjkoshy args.pa_argv = (argv += optind); 892145256Sjkoshy 893210797Sfabient /* If we read from logfile and no specified CPU mask use 894210797Sfabient * the maximum CPU count. 895210797Sfabient */ 896210797Sfabient if ((args.pa_flags & FLAG_READ_LOGFILE) && 897210797Sfabient (args.pa_flags & FLAGS_HAS_CPUMASK) == 0) 898224698Sattilio CPU_FILL(&cpumask); 899210797Sfabient 900174396Sjkoshy args.pa_cpumask = cpumask; /* For selecting CPUs using -R. */ 901174396Sjkoshy 902147708Sjkoshy if (argc) /* command line present */ 903147708Sjkoshy args.pa_flags |= FLAG_HAS_COMMANDLINE; 904145256Sjkoshy 905185322Sattilio if (args.pa_flags & (FLAG_DO_GPROF | FLAG_DO_CALLGRAPHS | 906203790Sfabient FLAG_DO_ANNOTATE | FLAG_DO_TOP)) 907174396Sjkoshy args.pa_flags |= FLAG_DO_ANALYSIS; 908174396Sjkoshy 909145256Sjkoshy /* 910145256Sjkoshy * Check invocation syntax. 911145256Sjkoshy */ 912145256Sjkoshy 913147708Sjkoshy /* disallow -O and -R together */ 914147708Sjkoshy if (args.pa_outputpath && args.pa_inputpath) 915227524Sobrien errx(EX_USAGE, 916227524Sobrien "ERROR: options -O and -R are mutually exclusive."); 917147708Sjkoshy 918185322Sattilio /* -m option is allowed with -R only. */ 919203790Sfabient if (args.pa_flags & FLAG_DO_ANNOTATE && args.pa_inputpath == NULL) 920185322Sattilio errx(EX_USAGE, "ERROR: option -m requires an input file"); 921185322Sattilio 922185322Sattilio /* -m option is not allowed combined with -g or -G. */ 923203790Sfabient if (args.pa_flags & FLAG_DO_ANNOTATE && 924185322Sattilio args.pa_flags & (FLAG_DO_GPROF | FLAG_DO_CALLGRAPHS)) 925227524Sobrien errx(EX_USAGE, 926227524Sobrien "ERROR: option -m and -g | -G are mutually exclusive"); 927185322Sattilio 928147708Sjkoshy if (args.pa_flags & FLAG_READ_LOGFILE) { 929147191Sjkoshy errmsg = NULL; 930147708Sjkoshy if (args.pa_flags & FLAG_HAS_COMMANDLINE) 931147191Sjkoshy errmsg = "a command line specification"; 932169069Sjkoshy else if (args.pa_flags & FLAG_HAS_TARGET) 933147191Sjkoshy errmsg = "option -t"; 934169069Sjkoshy else if (!STAILQ_EMPTY(&args.pa_events)) 935147191Sjkoshy errmsg = "a PMC event specification"; 936147191Sjkoshy if (errmsg) 937227524Sobrien errx(EX_USAGE, 938227524Sobrien "ERROR: option -R may not be used with %s.", 939227524Sobrien errmsg); 940169069Sjkoshy } else if (STAILQ_EMPTY(&args.pa_events)) 941147708Sjkoshy /* All other uses require a PMC spec. */ 942145256Sjkoshy pmcstat_show_usage(); 943145256Sjkoshy 944147191Sjkoshy /* check for -t pid without a process PMC spec */ 945169069Sjkoshy if ((args.pa_required & FLAG_HAS_TARGET) && 946147191Sjkoshy (args.pa_flags & FLAG_HAS_PROCESS_PMCS) == 0) 947227524Sobrien errx(EX_USAGE, 948227524Sobrien"ERROR: option -t requires a process mode PMC to be specified." 949227524Sobrien ); 950147191Sjkoshy 951147191Sjkoshy /* check for process-mode options without a command or -t pid */ 952147191Sjkoshy if ((args.pa_required & FLAG_HAS_PROCESS_PMCS) && 953169069Sjkoshy (args.pa_flags & (FLAG_HAS_COMMANDLINE | FLAG_HAS_TARGET)) == 0) 954227524Sobrien errx(EX_USAGE, 955227524Sobrien"ERROR: options -d, -E, -p, -P, and -W require a command line or target process." 956227524Sobrien ); 957147191Sjkoshy 958147191Sjkoshy /* check for -p | -P without a target process of some sort */ 959169069Sjkoshy if ((args.pa_required & (FLAG_HAS_COMMANDLINE | FLAG_HAS_TARGET)) && 960169069Sjkoshy (args.pa_flags & (FLAG_HAS_COMMANDLINE | FLAG_HAS_TARGET)) == 0) 961227524Sobrien errx(EX_USAGE, 962227524Sobrien"ERROR: options -P and -p require a target process or a command line." 963227524Sobrien ); 964147191Sjkoshy 965147191Sjkoshy /* check for process-mode options without a process-mode PMC */ 966147191Sjkoshy if ((args.pa_required & FLAG_HAS_PROCESS_PMCS) && 967147191Sjkoshy (args.pa_flags & FLAG_HAS_PROCESS_PMCS) == 0) 968227524Sobrien errx(EX_USAGE, 969227524Sobrien"ERROR: options -d, -E, and -W require a process mode PMC to be specified." 970227524Sobrien ); 971147191Sjkoshy 972174396Sjkoshy /* check for -c cpu with no system mode PMCs or logfile. */ 973147191Sjkoshy if ((args.pa_required & FLAG_HAS_SYSTEM_PMCS) && 974174396Sjkoshy (args.pa_flags & FLAG_HAS_SYSTEM_PMCS) == 0 && 975174396Sjkoshy (args.pa_flags & FLAG_READ_LOGFILE) == 0) 976227524Sobrien errx(EX_USAGE, 977227524Sobrien"ERROR: option -c requires at least one system mode PMC to be specified." 978227524Sobrien ); 979147191Sjkoshy 980147191Sjkoshy /* check for counting mode options without a counting PMC */ 981147191Sjkoshy if ((args.pa_required & FLAG_HAS_COUNTING_PMCS) && 982147191Sjkoshy (args.pa_flags & FLAG_HAS_COUNTING_PMCS) == 0) 983227524Sobrien errx(EX_USAGE, 984227524Sobrien"ERROR: options -C, -W and -o require at least one counting mode PMC to be specified." 985227524Sobrien ); 986147191Sjkoshy 987147191Sjkoshy /* check for sampling mode options without a sampling PMC spec */ 988147191Sjkoshy if ((args.pa_required & FLAG_HAS_SAMPLING_PMCS) && 989147191Sjkoshy (args.pa_flags & FLAG_HAS_SAMPLING_PMCS) == 0) 990227524Sobrien errx(EX_USAGE, 991227524Sobrien"ERROR: options -N, -n and -O require at least one sampling mode PMC to be specified." 992227524Sobrien ); 993147191Sjkoshy 994203790Sfabient /* check if -g/-G/-m/-T are being used correctly */ 995174396Sjkoshy if ((args.pa_flags & FLAG_DO_ANALYSIS) && 996147708Sjkoshy !(args.pa_flags & (FLAG_HAS_SAMPLING_PMCS|FLAG_READ_LOGFILE))) 997227524Sobrien errx(EX_USAGE, 998227524Sobrien"ERROR: options -g/-G/-m/-T require sampling PMCs or -R to be specified." 999227524Sobrien ); 1000147708Sjkoshy 1001147191Sjkoshy /* check if -O was spuriously specified */ 1002147708Sjkoshy if ((args.pa_flags & FLAG_HAS_OUTPUT_LOGFILE) && 1003147708Sjkoshy (args.pa_required & FLAG_HAS_OUTPUT_LOGFILE) == 0) 1004147191Sjkoshy errx(EX_USAGE, 1005227524Sobrien"ERROR: option -O is used only with options -E, -P, -S and -W." 1006227524Sobrien ); 1007147191Sjkoshy 1008203790Sfabient /* -k kernel path require -g/-G/-m/-T or -R */ 1009147708Sjkoshy if ((args.pa_flags & FLAG_HAS_KERNELPATH) && 1010174396Sjkoshy (args.pa_flags & FLAG_DO_ANALYSIS) == 0 && 1011157144Sjkoshy (args.pa_flags & FLAG_READ_LOGFILE) == 0) 1012203790Sfabient errx(EX_USAGE, "ERROR: option -k is only used with -g/-R/-m/-T."); 1013147708Sjkoshy 1014174396Sjkoshy /* -D only applies to gprof output mode (-g) */ 1015147708Sjkoshy if ((args.pa_flags & FLAG_HAS_SAMPLESDIR) && 1016174396Sjkoshy (args.pa_flags & FLAG_DO_GPROF) == 0) 1017174396Sjkoshy errx(EX_USAGE, "ERROR: option -D is only used with -g."); 1018147708Sjkoshy 1019157144Sjkoshy /* -M mapfile requires -g or -R */ 1020157144Sjkoshy if (args.pa_mapfilename != NULL && 1021157144Sjkoshy (args.pa_flags & FLAG_DO_GPROF) == 0 && 1022157144Sjkoshy (args.pa_flags & FLAG_READ_LOGFILE) == 0) 1023157144Sjkoshy errx(EX_USAGE, "ERROR: option -M is only used with -g/-R."); 1024157144Sjkoshy 1025147708Sjkoshy /* 1026147708Sjkoshy * Disallow textual output of sampling PMCs if counting PMCs 1027147708Sjkoshy * have also been asked for, mostly because the combined output 1028147708Sjkoshy * is difficult to make sense of. 1029147708Sjkoshy */ 1030147708Sjkoshy if ((args.pa_flags & FLAG_HAS_COUNTING_PMCS) && 1031147708Sjkoshy (args.pa_flags & FLAG_HAS_SAMPLING_PMCS) && 1032168927Sjkoshy ((args.pa_flags & FLAG_HAS_OUTPUT_LOGFILE) == 0)) 1033227524Sobrien errx(EX_USAGE, 1034227524Sobrien"ERROR: option -O is required if counting and sampling PMCs are specified together." 1035227524Sobrien ); 1036147708Sjkoshy 1037157144Sjkoshy /* 1038174396Sjkoshy * Check if "-k kerneldir" was specified, and if whether 1039227489Seadler * 'kerneldir' actually refers to a file. If so, use 1040174396Sjkoshy * `dirname path` to determine the kernel directory. 1041157144Sjkoshy */ 1042157144Sjkoshy if (args.pa_flags & FLAG_HAS_KERNELPATH) { 1043157144Sjkoshy (void) snprintf(buffer, sizeof(buffer), "%s%s", args.pa_fsroot, 1044157144Sjkoshy args.pa_kernel); 1045157144Sjkoshy if (stat(buffer, &sb) < 0) 1046157144Sjkoshy err(EX_OSERR, "ERROR: Cannot locate kernel \"%s\"", 1047157144Sjkoshy buffer); 1048157144Sjkoshy if (!S_ISREG(sb.st_mode) && !S_ISDIR(sb.st_mode)) 1049157144Sjkoshy errx(EX_USAGE, "ERROR: \"%s\": Unsupported file type.", 1050157144Sjkoshy buffer); 1051157144Sjkoshy if (!S_ISDIR(sb.st_mode)) { 1052157144Sjkoshy tmp = args.pa_kernel; 1053157144Sjkoshy args.pa_kernel = strdup(dirname(args.pa_kernel)); 1054157144Sjkoshy free(tmp); 1055157144Sjkoshy (void) snprintf(buffer, sizeof(buffer), "%s%s", 1056157144Sjkoshy args.pa_fsroot, args.pa_kernel); 1057157144Sjkoshy if (stat(buffer, &sb) < 0) 1058157144Sjkoshy err(EX_OSERR, "ERROR: Cannot stat \"%s\"", 1059157144Sjkoshy buffer); 1060157144Sjkoshy if (!S_ISDIR(sb.st_mode)) 1061227524Sobrien errx(EX_USAGE, 1062227524Sobrien "ERROR: \"%s\" is not a directory.", 1063227524Sobrien buffer); 1064157144Sjkoshy } 1065157144Sjkoshy } 1066168949Sjkoshy 1067174396Sjkoshy /* 1068174396Sjkoshy * If we have a callgraph be created, select the outputfile. 1069174396Sjkoshy */ 1070174396Sjkoshy if (args.pa_flags & FLAG_DO_CALLGRAPHS) { 1071174396Sjkoshy if (strcmp(graphfilename, "-") == 0) 1072174396Sjkoshy args.pa_graphfile = args.pa_printfile; 1073174396Sjkoshy else { 1074174396Sjkoshy args.pa_graphfile = fopen(graphfilename, "w"); 1075174396Sjkoshy if (args.pa_graphfile == NULL) 1076227524Sobrien err(EX_OSERR, 1077227524Sobrien "ERROR: cannot open \"%s\" for writing", 1078227524Sobrien graphfilename); 1079174396Sjkoshy } 1080174396Sjkoshy } 1081203790Sfabient if (args.pa_flags & FLAG_DO_ANNOTATE) { 1082185322Sattilio args.pa_graphfile = fopen(graphfilename, "w"); 1083185322Sattilio if (args.pa_graphfile == NULL) 1084185322Sattilio err(EX_OSERR, "ERROR: cannot open \"%s\" for writing", 1085185322Sattilio graphfilename); 1086185322Sattilio } 1087174396Sjkoshy 1088210794Sfabient /* if we've been asked to process a log file, skip init */ 1089210794Sfabient if ((args.pa_flags & FLAG_READ_LOGFILE) == 0) { 1090210794Sfabient if (pmc_init() < 0) 1091210794Sfabient err(EX_UNAVAILABLE, 1092227524Sobrien "ERROR: Initialization of the pmc(3) library failed" 1093227524Sobrien ); 1094210794Sfabient 1095210794Sfabient if ((npmc = pmc_npmc(0)) < 0) /* assume all CPUs are identical */ 1096227524Sobrien err(EX_OSERR, 1097227524Sobrien"ERROR: Cannot determine the number of PMCs on CPU %d", 1098227524Sobrien 0); 1099210794Sfabient } 1100210794Sfabient 1101210794Sfabient /* Allocate a kqueue */ 1102210794Sfabient if ((pmcstat_kq = kqueue()) < 0) 1103210794Sfabient err(EX_OSERR, "ERROR: Cannot allocate kqueue"); 1104210794Sfabient 1105210794Sfabient /* Setup the logfile as the source. */ 1106147708Sjkoshy if (args.pa_flags & FLAG_READ_LOGFILE) { 1107147708Sjkoshy /* 1108147708Sjkoshy * Print the log in textual form if we haven't been 1109174396Sjkoshy * asked to generate profiling information. 1110147708Sjkoshy */ 1111174396Sjkoshy if ((args.pa_flags & FLAG_DO_ANALYSIS) == 0) 1112147708Sjkoshy args.pa_flags |= FLAG_DO_PRINT; 1113147708Sjkoshy 1114203790Sfabient pmcstat_initialize_logging(); 1115210794Sfabient rfd = pmcstat_open_log(args.pa_inputpath, 1116157406Sjkoshy PMCSTAT_OPEN_FOR_READ); 1117210794Sfabient if ((args.pa_logparser = pmclog_open(rfd)) == NULL) 1118147708Sjkoshy err(EX_OSERR, "ERROR: Cannot create parser"); 1119210794Sfabient if (fcntl(rfd, F_SETFL, O_NONBLOCK) < 0) 1120210794Sfabient err(EX_OSERR, "ERROR: fcntl(2) failed"); 1121210794Sfabient EV_SET(&kev, rfd, EVFILT_READ, EV_ADD, 1122210794Sfabient 0, 0, NULL); 1123210794Sfabient if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1124210794Sfabient err(EX_OSERR, "ERROR: Cannot register kevent"); 1125147191Sjkoshy } 1126145256Sjkoshy /* 1127147708Sjkoshy * Configure the specified log file or setup a default log 1128147708Sjkoshy * consumer via a pipe. 1129147708Sjkoshy */ 1130147708Sjkoshy if (args.pa_required & FLAG_HAS_OUTPUT_LOGFILE) { 1131157406Sjkoshy if (args.pa_outputpath) 1132157406Sjkoshy args.pa_logfd = pmcstat_open_log(args.pa_outputpath, 1133157406Sjkoshy PMCSTAT_OPEN_FOR_WRITE); 1134157406Sjkoshy else { 1135147708Sjkoshy /* 1136147708Sjkoshy * process the log on the fly by reading it in 1137147708Sjkoshy * through a pipe. 1138147708Sjkoshy */ 1139147708Sjkoshy if (pipe(pipefd) < 0) 1140147708Sjkoshy err(EX_OSERR, "ERROR: pipe(2) failed"); 1141147708Sjkoshy 1142147708Sjkoshy if (fcntl(pipefd[READPIPEFD], F_SETFL, O_NONBLOCK) < 0) 1143147708Sjkoshy err(EX_OSERR, "ERROR: fcntl(2) failed"); 1144147708Sjkoshy 1145147708Sjkoshy EV_SET(&kev, pipefd[READPIPEFD], EVFILT_READ, EV_ADD, 1146147708Sjkoshy 0, 0, NULL); 1147147708Sjkoshy 1148147708Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1149147708Sjkoshy err(EX_OSERR, "ERROR: Cannot register kevent"); 1150147708Sjkoshy 1151147708Sjkoshy args.pa_logfd = pipefd[WRITEPIPEFD]; 1152147708Sjkoshy 1153203790Sfabient args.pa_flags |= FLAG_HAS_PIPE; 1154203790Sfabient if ((args.pa_flags & FLAG_DO_TOP) == 0) 1155203790Sfabient args.pa_flags |= FLAG_DO_PRINT; 1156147708Sjkoshy args.pa_logparser = pmclog_open(pipefd[READPIPEFD]); 1157147708Sjkoshy } 1158147708Sjkoshy 1159147708Sjkoshy if (pmc_configure_logfile(args.pa_logfd) < 0) 1160147708Sjkoshy err(EX_OSERR, "ERROR: Cannot configure log file"); 1161147708Sjkoshy } 1162147708Sjkoshy 1163151542Sjkoshy /* remember to check for driver errors if we are sampling or logging */ 1164151542Sjkoshy check_driver_stats = (args.pa_flags & FLAG_HAS_SAMPLING_PMCS) || 1165151542Sjkoshy (args.pa_flags & FLAG_HAS_OUTPUT_LOGFILE); 1166151542Sjkoshy 1167147708Sjkoshy /* 1168210794Sfabient if (args.pa_flags & FLAG_READ_LOGFILE) { 1169145256Sjkoshy * Allocate PMCs. 1170145256Sjkoshy */ 1171145256Sjkoshy 1172169069Sjkoshy STAILQ_FOREACH(ev, &args.pa_events, ev_next) { 1173227524Sobrien if (pmc_allocate(ev->ev_spec, ev->ev_mode, 1174147191Sjkoshy ev->ev_flags, ev->ev_cpu, &ev->ev_pmcid) < 0) 1175227524Sobrien err(EX_OSERR, 1176227524Sobrien"ERROR: Cannot allocate %s-mode pmc with specification \"%s\"", 1177227524Sobrien PMC_IS_SYSTEM_MODE(ev->ev_mode) ? 1178227524Sobrien "system" : "process", ev->ev_spec); 1179145256Sjkoshy 1180227524Sobrien if (PMC_IS_SAMPLING_MODE(ev->ev_mode) && 1181227524Sobrien pmc_set(ev->ev_pmcid, ev->ev_count) < 0) 1182227524Sobrien err(EX_OSERR, 1183227524Sobrien "ERROR: Cannot set sampling count for PMC \"%s\"", 1184227524Sobrien ev->ev_name); 1185147708Sjkoshy } 1186147708Sjkoshy 1187145256Sjkoshy /* compute printout widths */ 1188169069Sjkoshy STAILQ_FOREACH(ev, &args.pa_events, ev_next) { 1189145774Sjkoshy int counter_width; 1190145774Sjkoshy int display_width; 1191145774Sjkoshy int header_width; 1192145256Sjkoshy 1193145774Sjkoshy (void) pmc_width(ev->ev_pmcid, &counter_width); 1194168949Sjkoshy header_width = strlen(ev->ev_name) + 2; /* prefix '%c/' */ 1195145774Sjkoshy display_width = (int) floor(counter_width / 3.32193) + 1; 1196145256Sjkoshy 1197168949Sjkoshy if (PMC_IS_SYSTEM_MODE(ev->ev_mode)) 1198168949Sjkoshy header_width += 3; /* 2 digit CPU number + '/' */ 1199168949Sjkoshy 1200145774Sjkoshy if (header_width > display_width) { 1201145256Sjkoshy ev->ev_fieldskip = 0; 1202145774Sjkoshy ev->ev_fieldwidth = header_width; 1203145256Sjkoshy } else { 1204145774Sjkoshy ev->ev_fieldskip = display_width - 1205145774Sjkoshy header_width; 1206145774Sjkoshy ev->ev_fieldwidth = display_width; 1207145256Sjkoshy } 1208145256Sjkoshy } 1209145256Sjkoshy 1210145256Sjkoshy /* 1211145256Sjkoshy * If our output is being set to a terminal, register a handler 1212145256Sjkoshy * for window size changes. 1213145256Sjkoshy */ 1214145256Sjkoshy 1215147708Sjkoshy if (isatty(fileno(args.pa_printfile))) { 1216145256Sjkoshy 1217147708Sjkoshy if (ioctl(fileno(args.pa_printfile), TIOCGWINSZ, &ws) < 0) 1218145256Sjkoshy err(EX_OSERR, "ERROR: Cannot determine window size"); 1219145256Sjkoshy 1220145256Sjkoshy pmcstat_displayheight = ws.ws_row - 1; 1221203790Sfabient pmcstat_displaywidth = ws.ws_col - 1; 1222145256Sjkoshy 1223145256Sjkoshy EV_SET(&kev, SIGWINCH, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL); 1224145256Sjkoshy 1225145256Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1226227524Sobrien err(EX_OSERR, 1227227524Sobrien "ERROR: Cannot register kevent for SIGWINCH"); 1228203790Sfabient 1229203790Sfabient args.pa_toptty = 1; 1230145256Sjkoshy } 1231145256Sjkoshy 1232203790Sfabient /* 1233203790Sfabient * Listen to key input in top mode. 1234203790Sfabient */ 1235203790Sfabient if (args.pa_flags & FLAG_DO_TOP) { 1236203790Sfabient EV_SET(&kev, fileno(stdin), EVFILT_READ, EV_ADD, 0, 0, NULL); 1237203790Sfabient if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1238203790Sfabient err(EX_OSERR, "ERROR: Cannot register kevent"); 1239203790Sfabient } 1240203790Sfabient 1241145256Sjkoshy EV_SET(&kev, SIGINT, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL); 1242145256Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1243145256Sjkoshy err(EX_OSERR, "ERROR: Cannot register kevent for SIGINT"); 1244145256Sjkoshy 1245147191Sjkoshy EV_SET(&kev, SIGIO, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL); 1246147191Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1247147191Sjkoshy err(EX_OSERR, "ERROR: Cannot register kevent for SIGIO"); 1248145256Sjkoshy 1249147191Sjkoshy /* 1250147191Sjkoshy * An exec() failure of a forked child is signalled by the 1251147191Sjkoshy * child sending the parent a SIGCHLD. We don't register an 1252147191Sjkoshy * actual signal handler for SIGCHLD, but instead use our 1253147191Sjkoshy * kqueue to pick up the signal. 1254147191Sjkoshy */ 1255147191Sjkoshy EV_SET(&kev, SIGCHLD, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL); 1256147191Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1257147191Sjkoshy err(EX_OSERR, "ERROR: Cannot register kevent for SIGCHLD"); 1258145256Sjkoshy 1259203790Sfabient /* 1260203790Sfabient * Setup a timer if we have counting mode PMCs needing to be printed or 1261203790Sfabient * top mode plugin is active. 1262203790Sfabient */ 1263203790Sfabient if (((args.pa_flags & FLAG_HAS_COUNTING_PMCS) && 1264203790Sfabient (args.pa_required & FLAG_HAS_OUTPUT_LOGFILE) == 0) || 1265203790Sfabient (args.pa_flags & FLAG_DO_TOP)) { 1266145256Sjkoshy EV_SET(&kev, 0, EVFILT_TIMER, EV_ADD, 0, 1267145256Sjkoshy args.pa_interval * 1000, NULL); 1268145256Sjkoshy 1269145256Sjkoshy if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) 1270227524Sobrien err(EX_OSERR, 1271227524Sobrien "ERROR: Cannot register kevent for timer"); 1272145256Sjkoshy } 1273145256Sjkoshy 1274145256Sjkoshy /* attach PMCs to the target process, starting it if specified */ 1275168949Sjkoshy if (args.pa_flags & FLAG_HAS_COMMANDLINE) 1276203790Sfabient pmcstat_create_process(); 1277145256Sjkoshy 1278151542Sjkoshy if (check_driver_stats && pmc_get_driver_stats(&ds_start) < 0) 1279151542Sjkoshy err(EX_OSERR, "ERROR: Cannot retrieve driver statistics"); 1280151542Sjkoshy 1281168949Sjkoshy /* Attach process pmcs to the target process. */ 1282180148Sjkoshy if (args.pa_flags & (FLAG_HAS_TARGET | FLAG_HAS_COMMANDLINE)) { 1283169069Sjkoshy if (SLIST_EMPTY(&args.pa_targets)) 1284227524Sobrien errx(EX_DATAERR, 1285227524Sobrien "ERROR: No matching target processes."); 1286183672Sjkoshy if (args.pa_flags & FLAG_HAS_PROCESS_PMCS) 1287203790Sfabient pmcstat_attach_pmcs(); 1288168949Sjkoshy 1289169069Sjkoshy if (pmcstat_kvm) { 1290169069Sjkoshy kvm_close(pmcstat_kvm); 1291169069Sjkoshy pmcstat_kvm = NULL; 1292169069Sjkoshy } 1293169069Sjkoshy } 1294169069Sjkoshy 1295145256Sjkoshy /* start the pmcs */ 1296203790Sfabient pmcstat_start_pmcs(); 1297145256Sjkoshy 1298145256Sjkoshy /* start the (commandline) process if needed */ 1299147708Sjkoshy if (args.pa_flags & FLAG_HAS_COMMANDLINE) 1300168949Sjkoshy pmcstat_start_process(); 1301145256Sjkoshy 1302210794Sfabient /* initialize logging */ 1303210794Sfabient pmcstat_initialize_logging(); 1304147708Sjkoshy 1305145256Sjkoshy /* Handle SIGINT using the kqueue loop */ 1306145256Sjkoshy sa.sa_handler = SIG_IGN; 1307145256Sjkoshy sa.sa_flags = 0; 1308145256Sjkoshy (void) sigemptyset(&sa.sa_mask); 1309145256Sjkoshy 1310145256Sjkoshy if (sigaction(SIGINT, &sa, NULL) < 0) 1311145256Sjkoshy err(EX_OSERR, "ERROR: Cannot install signal handler"); 1312145256Sjkoshy 1313145256Sjkoshy /* 1314203790Sfabient * Setup the top mode display. 1315203790Sfabient */ 1316203790Sfabient if (args.pa_flags & FLAG_DO_TOP) { 1317203790Sfabient args.pa_flags &= ~FLAG_DO_PRINT; 1318203790Sfabient 1319203790Sfabient if (args.pa_toptty) { 1320203790Sfabient /* 1321203790Sfabient * Init ncurses. 1322203790Sfabient */ 1323203790Sfabient initscr(); 1324203790Sfabient if(has_colors() == TRUE) { 1325203790Sfabient args.pa_topcolor = 1; 1326203790Sfabient start_color(); 1327203790Sfabient use_default_colors(); 1328203790Sfabient pair_content(0, &cf, &cb); 1329203790Sfabient init_pair(1, COLOR_RED, cb); 1330203790Sfabient init_pair(2, COLOR_YELLOW, cb); 1331203790Sfabient init_pair(3, COLOR_GREEN, cb); 1332203790Sfabient } 1333203790Sfabient cbreak(); 1334203790Sfabient noecho(); 1335203790Sfabient nonl(); 1336203790Sfabient nodelay(stdscr, 1); 1337203790Sfabient intrflush(stdscr, FALSE); 1338203790Sfabient keypad(stdscr, TRUE); 1339203790Sfabient clear(); 1340204783Sfabient /* Get terminal width / height with ncurses. */ 1341227524Sobrien getmaxyx(stdscr, 1342227524Sobrien pmcstat_displayheight, pmcstat_displaywidth); 1343204783Sfabient pmcstat_displayheight--; pmcstat_displaywidth--; 1344203790Sfabient atexit(pmcstat_topexit); 1345203790Sfabient } 1346203790Sfabient } 1347203790Sfabient 1348203790Sfabient /* 1349145256Sjkoshy * loop till either the target process (if any) exits, or we 1350145256Sjkoshy * are killed by a SIGINT. 1351145256Sjkoshy */ 1352147191Sjkoshy runstate = PMCSTAT_RUNNING; 1353226514Sfabient do_print = do_read = 0; 1354145256Sjkoshy do { 1355145256Sjkoshy if ((c = kevent(pmcstat_kq, NULL, 0, &kev, 1, NULL)) <= 0) { 1356145256Sjkoshy if (errno != EINTR) 1357145256Sjkoshy err(EX_OSERR, "ERROR: kevent failed"); 1358145256Sjkoshy else 1359145256Sjkoshy continue; 1360145256Sjkoshy } 1361145256Sjkoshy 1362145256Sjkoshy if (kev.flags & EV_ERROR) 1363145256Sjkoshy errc(EX_OSERR, kev.data, "ERROR: kevent failed"); 1364145256Sjkoshy 1365145256Sjkoshy switch (kev.filter) { 1366147191Sjkoshy case EVFILT_PROC: /* target has exited */ 1367210794Sfabient runstate = pmcstat_close_log(); 1368148688Sjkoshy do_print = 1; 1369147191Sjkoshy break; 1370145256Sjkoshy 1371147191Sjkoshy case EVFILT_READ: /* log file data is present */ 1372210794Sfabient if (kev.ident == (unsigned)fileno(stdin) && 1373210794Sfabient (args.pa_flags & FLAG_DO_TOP)) { 1374203790Sfabient if (pmcstat_keypress_log()) 1375203790Sfabient runstate = pmcstat_close_log(); 1376226514Sfabient } else { 1377226514Sfabient do_read = 0; 1378203790Sfabient runstate = pmcstat_process_log(); 1379226514Sfabient } 1380145256Sjkoshy break; 1381145256Sjkoshy 1382145256Sjkoshy case EVFILT_SIGNAL: 1383147191Sjkoshy if (kev.ident == SIGCHLD) { 1384147191Sjkoshy /* 1385147191Sjkoshy * The child process sends us a 1386147191Sjkoshy * SIGCHLD if its exec() failed. We 1387147191Sjkoshy * wait for it to exit and then exit 1388147191Sjkoshy * ourselves. 1389147191Sjkoshy */ 1390147191Sjkoshy (void) wait(&c); 1391147191Sjkoshy runstate = PMCSTAT_FINISHED; 1392147191Sjkoshy } else if (kev.ident == SIGIO) { 1393147191Sjkoshy /* 1394147191Sjkoshy * We get a SIGIO if a PMC loses all 1395147191Sjkoshy * of its targets, or if logfile 1396147191Sjkoshy * writes encounter an error. 1397147191Sjkoshy */ 1398210794Sfabient runstate = pmcstat_close_log(); 1399147191Sjkoshy do_print = 1; /* print PMCs at exit */ 1400147191Sjkoshy } else if (kev.ident == SIGINT) { 1401147708Sjkoshy /* Kill the child process if we started it */ 1402147708Sjkoshy if (args.pa_flags & FLAG_HAS_COMMANDLINE) 1403203790Sfabient pmcstat_kill_process(); 1404210794Sfabient runstate = pmcstat_close_log(); 1405145256Sjkoshy } else if (kev.ident == SIGWINCH) { 1406147708Sjkoshy if (ioctl(fileno(args.pa_printfile), 1407145256Sjkoshy TIOCGWINSZ, &ws) < 0) 1408227524Sobrien err(EX_OSERR, 1409227524Sobrien "ERROR: Cannot determine window size"); 1410145256Sjkoshy pmcstat_displayheight = ws.ws_row - 1; 1411203790Sfabient pmcstat_displaywidth = ws.ws_col - 1; 1412145256Sjkoshy } else 1413145256Sjkoshy assert(0); 1414145256Sjkoshy 1415145256Sjkoshy break; 1416147191Sjkoshy 1417147191Sjkoshy case EVFILT_TIMER: /* print out counting PMCs */ 1418226514Sfabient if ((args.pa_flags & FLAG_DO_TOP) && 1419226986Sfabient pmc_flush_logfile() == 0) 1420226514Sfabient do_read = 1; 1421147191Sjkoshy do_print = 1; 1422147191Sjkoshy break; 1423147191Sjkoshy 1424145256Sjkoshy } 1425145256Sjkoshy 1426226514Sfabient if (do_print && !do_read) { 1427203790Sfabient if ((args.pa_required & FLAG_HAS_OUTPUT_LOGFILE) == 0) { 1428203790Sfabient pmcstat_print_pmcs(); 1429227524Sobrien if (runstate == PMCSTAT_FINISHED && 1430227524Sobrien /* final newline */ 1431203790Sfabient (args.pa_flags & FLAG_DO_PRINT) == 0) 1432203790Sfabient (void) fprintf(args.pa_printfile, "\n"); 1433203790Sfabient } 1434203790Sfabient if (args.pa_flags & FLAG_DO_TOP) 1435203790Sfabient pmcstat_display_log(); 1436147191Sjkoshy do_print = 0; 1437147191Sjkoshy } 1438145256Sjkoshy 1439147191Sjkoshy } while (runstate != PMCSTAT_FINISHED); 1440147191Sjkoshy 1441203790Sfabient if ((args.pa_flags & FLAG_DO_TOP) && args.pa_toptty) { 1442203790Sfabient pmcstat_topexit(); 1443203790Sfabient args.pa_toptty = 0; 1444203790Sfabient } 1445203790Sfabient 1446147191Sjkoshy /* flush any pending log entries */ 1447147708Sjkoshy if (args.pa_flags & (FLAG_HAS_OUTPUT_LOGFILE | FLAG_HAS_PIPE)) 1448226514Sfabient pmc_close_logfile(); 1449147191Sjkoshy 1450203790Sfabient pmcstat_cleanup(); 1451145256Sjkoshy 1452157144Sjkoshy free(args.pa_kernel); 1453157144Sjkoshy 1454151542Sjkoshy /* check if the driver lost any samples or events */ 1455151542Sjkoshy if (check_driver_stats) { 1456151542Sjkoshy if (pmc_get_driver_stats(&ds_end) < 0) 1457227524Sobrien err(EX_OSERR, 1458227524Sobrien "ERROR: Cannot retrieve driver statistics"); 1459157144Sjkoshy if (ds_start.pm_intr_bufferfull != ds_end.pm_intr_bufferfull && 1460157144Sjkoshy args.pa_verbosity > 0) 1461227524Sobrien warnx("WARNING: some samples were dropped.\n" 1462227524Sobrien"Please consider tuning the \"kern.hwpmc.nsamples\" tunable." 1463227524Sobrien ); 1464151542Sjkoshy if (ds_start.pm_buffer_requests_failed != 1465157144Sjkoshy ds_end.pm_buffer_requests_failed && 1466157144Sjkoshy args.pa_verbosity > 0) 1467227524Sobrien warnx("WARNING: some events were discarded.\n" 1468227524Sobrien"Please consider tuning the \"kern.hwpmc.nbuffers\" tunable." 1469227524Sobrien ); 1470151542Sjkoshy } 1471151542Sjkoshy 1472151542Sjkoshy exit(EX_OK); 1473145256Sjkoshy} 1474