usr.bin/top/m_dragonfly.c

   1 /*
   2  * top - a top users display for Unix
   3  *
   4  * SYNOPSIS:  For DragonFly 2.x and later
   5  *
   6  * DESCRIPTION:
   7  * Originally written for BSD4.4 system by Christos Zoulas.
   8  * Ported to FreeBSD 2.x by Steven Wallace && Wolfram Schneider
   9  * Order support hacked in from top-3.5beta6/machine/m_aix41.c
  10  *   by Monte Mitzelfelt (for latest top see http://www.groupsys.com/topinfo/)
  11  *
  12  * This is the machine-dependent module for DragonFly 2.5.1
  13  * Should work for:
  14  *      DragonFly 2.x and above
  15  *
  16  * LIBS: -lkvm
  17  *
  18  * AUTHOR: Jan Lentfer <Jan.Lentfer@web.de>
  19  * This module has been put together from different sources and is based on the
  20  * work of many other people, e.g. Matthew Dillon, Simon Schubert, Jordan Gordeev.
  21  *
  22  * $FreeBSD: src/usr.bin/top/machine.c,v 1.29.2.2 2001/07/31 20:27:05 tmm Exp $
  23  * $DragonFly: src/usr.bin/top/machine.c,v 1.26 2008/10/16 01:52:33 swildner Exp $
  24  */
  25
  26 #include <sys/time.h>
  27 #include <sys/types.h>
  28 #include <sys/signal.h>
  29 #include <sys/param.h>
  30
  31 #include "os.h"
  32 #include <err.h>
  33 #include <kvm.h>
  34 #include <stdio.h>
  35 #include <unistd.h>
  36 #include <math.h>
  37 #include <pwd.h>
  38 #include <sys/errno.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/file.h>
  41 #include <sys/time.h>
  42 #include <sys/user.h>
  43 #include <sys/vmmeter.h>
  44 #include <sys/resource.h>
  45 #include <sys/rtprio.h>
  46
  47 /* Swap */
  48 #include <stdlib.h>
  49 #include <stdio.h>
  50 #include <sys/conf.h>
  51
  52 #include <osreldate.h>          /* for changes in kernel structures */
  53
  54 #include <sys/kinfo.h>
  55 #include <kinfo.h>
  56 #include "top.h"
  57 #include "display.h"
  58 #include "machine.h"
  59 #include "screen.h"
  60 #include "utils.h"
  61
  62 int swapmode(int *retavail, int *retfree);
  63 static int smpmode;
  64 static int namelength;
  65 static int cmdlength;
  66 static int show_fullcmd;
  67
  68 int n_cpus = 0;
  69
  70 /*
  71  * needs to be a global symbol, so wrapper can be modified accordingly.
  72  */
  73 static int show_threads = 0;
  74
  75 /* get_process_info passes back a handle.  This is what it looks like: */
  76
  77 struct handle {
  78         struct kinfo_proc **next_proc;  /* points to next valid proc pointer */
  79         int remaining;          /* number of pointers remaining */
  80 };
  81
  82 /* declarations for load_avg */
  83 #include "loadavg.h"
  84
  85 #define PP(pp, field) ((pp)->kp_ ## field)
  86 #define LP(pp, field) ((pp)->kp_lwp.kl_ ## field)
  87 #define VP(pp, field) ((pp)->kp_vm_ ## field)
  88
  89 /* define what weighted cpu is.  */
  90 #define weighted_cpu(pct, pp) (PP((pp), swtime) == 0 ? 0.0 : \
  91                          ((pct) / (1.0 - exp(PP((pp), swtime) * logcpu))))
  92
  93 /* what we consider to be process size: */
  94 #define PROCSIZE(pp) (VP((pp), map_size) / 1024)
  95
  96 /*
  97  * These definitions control the format of the per-process area
  98  */
  99
 100 static char smp_header[] =
 101 "  PID %-*.*s PRI NICE  SIZE    RES STATE  C   TIME   CTIME   CPU COMMAND";
 102
 103 #define smp_Proc_format \
 104         "%5d %-*.*s %3d %3d%7s %6s %-6.6s %1x%7s %7s %5.2f%% %.*s"
 105
 106 static char up_header[] =
 107 "  PID %-*.*s PRI NICE  SIZE    RES STATE    TIME   CTIME   CPU COMMAND";
 108
 109 #define up_Proc_format \
 110         "%5d %-*.*s %3d %3d%7s %6s %-6.6s%.0d%7s %7s %5.2f%% %.*s"
 111
 112
 113
 114 /* process state names for the "STATE" column of the display */
 115 /*
 116  * the extra nulls in the string "run" are for adding a slash and the
 117  * processor number when needed
 118  */
 119
 120 const char *state_abbrev[] = {
 121         "", "RUN\0\0\0", "STOP", "SLEEP",
 122 };
 123
 124
 125 static kvm_t *kd;
 126
 127 /* values that we stash away in _init and use in later routines */
 128
 129 static double logcpu;
 130
 131 static long lastpid;
 132 static int ccpu;
 133
 134 /* these are for calculating cpu state percentages */
 135
 136 static struct kinfo_cputime *cp_time, *cp_old;
 137
 138 /* these are for detailing the process states */
 139
 140 int process_states[6];
 141 char *procstatenames[] = {
 142         "", " starting, ", " running, ", " sleeping, ", " stopped, ",
 143         " zombie, ",
 144         NULL
 145 };
 146
 147 /* these are for detailing the cpu states */
 148 #define CPU_STATES 5
 149 int *cpu_states;
 150 char *cpustatenames[CPU_STATES + 1] = {
 151         "user", "nice", "system", "interrupt", "idle", NULL
 152 };
 153
 154 /* these are for detailing the memory statistics */
 155
 156 long memory_stats[7];
 157 char *memorynames[] = {
 158         "K Active, ", "K Inact, ", "K Wired, ", "K Cache, ", "K Buf, ", "K Free",
 159         NULL
 160 };
 161
 162 long swap_stats[7];
 163 char *swapnames[] = {
 164         /* 0           1            2           3            4       5 */
 165         "K Total, ", "K Used, ", "K Free, ", "% Inuse, ", "K In, ", "K Out",
 166         NULL
 167 };
 168
 169
 170 /* these are for keeping track of the proc array */
 171
 172 static int nproc;
 173 static int onproc = -1;
 174 static int pref_len;
 175 static struct kinfo_proc *pbase;
 176 static struct kinfo_proc **pref;
 177
 178 /* these are for getting the memory statistics */
 179
 180 static int pageshift;           /* log base 2 of the pagesize */
 181
 182 /* define pagetok in terms of pageshift */
 183
 184 #define pagetok(size) ((size) << pageshift)
 185
 186 /* sorting orders. first is default */
 187 char *ordernames[] = {
 188         "cpu", "size", "res", "time", "pri", "thr", "pid", "ctime",  NULL
 189 };
 190
 191 /* compare routines */
 192 int proc_compare (struct kinfo_proc **, struct kinfo_proc **);
 193 int compare_size (struct kinfo_proc **, struct kinfo_proc **);
 194 int compare_res (struct kinfo_proc **, struct kinfo_proc **);
 195 int compare_time (struct kinfo_proc **, struct kinfo_proc **);
 196 int compare_ctime (struct kinfo_proc **, struct kinfo_proc **);
 197 int compare_prio(struct kinfo_proc **, struct kinfo_proc **);
 198 int compare_thr (struct kinfo_proc **, struct kinfo_proc **);
 199 int compare_pid (struct kinfo_proc **, struct kinfo_proc **);
 200
 201 int (*proc_compares[]) (struct kinfo_proc **,struct kinfo_proc **) = {
 202         proc_compare,
 203         compare_size,
 204         compare_res,
 205         compare_time,
 206         compare_prio,
 207         compare_thr,
 208         compare_pid,
 209         compare_ctime,
 210         NULL
 211 };
 212
 213 static void
 214 cputime_percentages(int out[CPU_STATES], struct kinfo_cputime *new,
 215     struct kinfo_cputime *old)
 216 {
 217         struct kinfo_cputime diffs;
 218         uint64_t total_change, half_total;
 219
 220         /* initialization */
 221         total_change = 0;
 222
 223         diffs.cp_user = new->cp_user - old->cp_user;
 224         diffs.cp_nice = new->cp_nice - old->cp_nice;
 225         diffs.cp_sys = new->cp_sys - old->cp_sys;
 226         diffs.cp_intr = new->cp_intr - old->cp_intr;
 227         diffs.cp_idle = new->cp_idle - old->cp_idle;
 228         total_change = diffs.cp_user + diffs.cp_nice + diffs.cp_sys +
 229             diffs.cp_intr + diffs.cp_idle;
 230         old->cp_user = new->cp_user;
 231         old->cp_nice = new->cp_nice;
 232         old->cp_sys = new->cp_sys;
 233         old->cp_intr = new->cp_intr;
 234         old->cp_idle = new->cp_idle;
 235
 236         /* avoid divide by zero potential */
 237         if (total_change == 0)
 238                 total_change = 1;
 239
 240         /* calculate percentages based on overall change, rounding up */
 241         half_total = total_change >> 1;
 242
 243         out[0] = ((diffs.cp_user * 1000LL + half_total) / total_change);
 244         out[1] = ((diffs.cp_nice * 1000LL + half_total) / total_change);
 245         out[2] = ((diffs.cp_sys * 1000LL + half_total) / total_change);
 246         out[3] = ((diffs.cp_intr * 1000LL + half_total) / total_change);
 247         out[4] = ((diffs.cp_idle * 1000LL + half_total) / total_change);
 248 }
 249
 250 int
 251 machine_init(struct statics *statics)
 252 {
 253         int pagesize;
 254         size_t modelen;
 255         struct passwd *pw;
 256         struct timeval boottime;
 257
 258         if (n_cpus < 1) {
 259                 if (kinfo_get_cpus(&n_cpus))
 260                         err(1, "kinfo_get_cpus failed");
 261         }
 262         /* get boot time */
 263         modelen = sizeof(boottime);
 264         if (sysctlbyname("kern.boottime", &boottime, &modelen, NULL, 0) == -1) {
 265                 /* we have no boottime to report */
 266                 boottime.tv_sec = -1;
 267         }
 268         modelen = sizeof(smpmode);
 269         if ((sysctlbyname("machdep.smp_active", &smpmode, &modelen, NULL, 0) < 0 &&
 270             sysctlbyname("smp.smp_active", &smpmode, &modelen, NULL, 0) < 0) ||
 271             modelen != sizeof(smpmode))
 272                 smpmode = 0;
 273
 274         while ((pw = getpwent()) != NULL) {
 275                 if ((int)strlen(pw->pw_name) > namelength)
 276                         namelength = strlen(pw->pw_name);
 277         }
 278         if (namelength < 8)
 279                 namelength = 8;
 280         if (smpmode && namelength > 13)
 281                 namelength = 13;
 282         else if (namelength > 15)
 283                 namelength = 15;
 284
 285         if ((kd = kvm_open(NULL, NULL, NULL, O_RDONLY, NULL)) == NULL)
 286                 return -1;
 287
 288         if (kinfo_get_sched_ccpu(&ccpu)) {
 289                 fprintf(stderr, "top: kinfo_get_sched_ccpu failed\n");
 290                 return (-1);
 291         }
 292         /* this is used in calculating WCPU -- calculate it ahead of time */
 293         logcpu = log(loaddouble(ccpu));
 294
 295         pbase = NULL;
 296         pref = NULL;
 297         nproc = 0;
 298         onproc = -1;
 299         /*
 300          * get the page size with "getpagesize" and calculate pageshift from
 301          * it
 302          */
 303         pagesize = getpagesize();
 304         pageshift = 0;
 305         while (pagesize > 1) {
 306                 pageshift++;
 307                 pagesize >>= 1;
 308         }
 309
 310         /* we only need the amount of log(2)1024 for our conversion */
 311         pageshift -= LOG1024;
 312
 313         /* fill in the statics information */
 314         statics->procstate_names = procstatenames;
 315         statics->cpustate_names = cpustatenames;
 316         statics->memory_names = memorynames;
 317         statics->boottime = boottime.tv_sec;
 318         statics->swap_names = swapnames;
 319         statics->order_names = ordernames;
 320         /* we need kvm descriptor in order to show full commands */
 321         statics->flags.fullcmds = kd != NULL;
 322
 323         /* all done! */
 324         return (0);
 325 }
 326
 327 char *
 328 format_header(char *uname_field)
 329 {
 330         static char Header[128];
 331
 332         snprintf(Header, sizeof(Header), smpmode ? smp_header : up_header,
 333             namelength, namelength, uname_field);
 334
 335         if (screen_width <= 79)
 336                 cmdlength = 80;
 337         else
 338                 cmdlength = screen_width;
 339
 340         cmdlength = cmdlength - strlen(Header) + 6;
 341
 342         return Header;
 343 }
 344
 345 static int swappgsin = -1;
 346 static int swappgsout = -1;
 347 extern struct timeval timeout;
 348
 349 void
 350 get_system_info(struct system_info *si)
 351 {
 352         size_t len;
 353         int cpu;
 354
 355         if (cpu_states == NULL) {
 356                 cpu_states = malloc(sizeof(*cpu_states) * CPU_STATES * n_cpus);
 357                 if (cpu_states == NULL)
 358                         err(1, "malloc");
 359                 bzero(cpu_states, sizeof(*cpu_states) * CPU_STATES * n_cpus);
 360         }
 361         if (cp_time == NULL) {
 362                 cp_time = malloc(2 * n_cpus * sizeof(cp_time[0]));
 363                 if (cp_time == NULL)
 364                         err(1, "cp_time");
 365                 cp_old = cp_time + n_cpus;
 366
 367                 len = n_cpus * sizeof(cp_old[0]);
 368                 bzero(cp_time, len);
 369                 if (sysctlbyname("kern.cputime", cp_old, &len, NULL, 0))
 370                         err(1, "kern.cputime");
 371         }
 372         len = n_cpus * sizeof(cp_time[0]);
 373         bzero(cp_time, len);
 374         if (sysctlbyname("kern.cputime", cp_time, &len, NULL, 0))
 375                 err(1, "kern.cputime");
 376
 377         getloadavg(si->load_avg, 3);
 378
 379         lastpid = 0;
 380
 381         /* convert cp_time counts to percentages */
 382         for (cpu = 0; cpu < n_cpus; ++cpu) {
 383                 cputime_percentages(cpu_states + cpu * CPU_STATES,
 384                     &cp_time[cpu], &cp_old[cpu]);
 385         }
 386
 387         /* sum memory & swap statistics */
 388         {
 389                 struct vmmeter vmm;
 390                 struct vmstats vms;
 391                 size_t vms_size = sizeof(vms);
 392                 size_t vmm_size = sizeof(vmm);
 393                 static unsigned int swap_delay = 0;
 394                 static int swapavail = 0;
 395                 static int swapfree = 0;
 396                 static int bufspace = 0;
 397
 398                 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0))
 399                         err(1, "sysctlbyname: vm.vmstats");
 400
 401                 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0))
 402                         err(1, "sysctlbyname: vm.vmmeter");
 403
 404                 if (kinfo_get_vfs_bufspace(&bufspace))
 405                         err(1, "kinfo_get_vfs_bufspace");
 406
 407                 /* convert memory stats to Kbytes */
 408                 memory_stats[0] = pagetok(vms.v_active_count);
 409                 memory_stats[1] = pagetok(vms.v_inactive_count);
 410                 memory_stats[2] = pagetok(vms.v_wire_count);
 411                 memory_stats[3] = pagetok(vms.v_cache_count);
 412                 memory_stats[4] = bufspace / 1024;
 413                 memory_stats[5] = pagetok(vms.v_free_count);
 414                 memory_stats[6] = -1;
 415
 416                 /* first interval */
 417                 if (swappgsin < 0) {
 418                         swap_stats[4] = 0;
 419                         swap_stats[5] = 0;
 420                 }
 421                 /* compute differences between old and new swap statistic */
 422                 else {
 423                         swap_stats[4] = pagetok(((vmm.v_swappgsin - swappgsin)));
 424                         swap_stats[5] = pagetok(((vmm.v_swappgsout - swappgsout)));
 425                 }
 426
 427                 swappgsin = vmm.v_swappgsin;
 428                 swappgsout = vmm.v_swappgsout;
 429
 430                 /* call CPU heavy swapmode() only for changes */
 431                 if (swap_stats[4] > 0 || swap_stats[5] > 0 || swap_delay == 0) {
 432                         swap_stats[3] = swapmode(&swapavail, &swapfree);
 433                         swap_stats[0] = swapavail;
 434                         swap_stats[1] = swapavail - swapfree;
 435                         swap_stats[2] = swapfree;
 436                 }
 437                 swap_delay = 1;
 438                 swap_stats[6] = -1;
 439         }
 440
 441         /* set arrays and strings */
 442         si->cpustates = cpu_states;
 443         si->memory = memory_stats;
 444         si->swap = swap_stats;
 445
 446
 447         if (lastpid > 0) {
 448                 si->last_pid = lastpid;
 449         } else {
 450                 si->last_pid = -1;
 451         }
 452 }
 453
 454
 455 static struct handle handle;
 456
 457 caddr_t
 458 get_process_info(struct system_info *si, struct process_select *sel,
 459     int compare_index)
 460 {
 461         int i;
 462         int total_procs;
 463         int active_procs;
 464         struct kinfo_proc **prefp;
 465         struct kinfo_proc *pp;
 466
 467         /* these are copied out of sel for speed */
 468         int show_idle;
 469         int show_system;
 470         int show_uid;
 471
 472
 473         pbase = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nproc);
 474         if (nproc > onproc)
 475                 pref = (struct kinfo_proc **)realloc(pref, sizeof(struct kinfo_proc *)
 476                     * (onproc = nproc));
 477         if (pref == NULL || pbase == NULL) {
 478                 (void)fprintf(stderr, "top: Out of memory.\n");
 479                 quit(23);
 480         }
 481         /* get a pointer to the states summary array */
 482         si->procstates = process_states;
 483
 484         /* set up flags which define what we are going to select */
 485         show_idle = sel->idle;
 486         show_system = sel->system;
 487         show_uid = sel->uid != -1;
 488         show_fullcmd = sel->fullcmd;
 489
 490         /* count up process states and get pointers to interesting procs */
 491         total_procs = 0;
 492         active_procs = 0;
 493         memset((char *)process_states, 0, sizeof(process_states));
 494         prefp = pref;
 495         for (pp = pbase, i = 0; i < nproc; pp++, i++) {
 496                 /*
 497                  * Place pointers to each valid proc structure in pref[].
 498                  * Process slots that are actually in use have a non-zero
 499                  * status field.  Processes with P_SYSTEM set are system
 500                  * processes---these get ignored unless show_sysprocs is set.
 501                  */
 502                 if ((show_threads && (LP(pp, pid) == -1)) ||
 503                     (show_system || ((PP(pp, flags) & P_SYSTEM) == 0))) {
 504                         total_procs++;
 505                         process_states[(unsigned char)PP(pp, stat)]++;
 506                         if ((show_threads && (LP(pp, pid) == -1)) ||
 507                             (show_idle || (LP(pp, pctcpu) != 0) ||
 508                             (LP(pp, stat) == LSRUN)) &&
 509                             (!show_uid || PP(pp, ruid) == (uid_t) sel->uid)) {
 510                                 *prefp++ = pp;
 511                                 active_procs++;
 512                         }
 513                 }
 514         }
 515
 516         qsort((char *)pref, active_procs, sizeof(struct kinfo_proc *),
 517             (int (*)(const void *, const void *))proc_compares[compare_index]);
 518
 519         /* remember active and total counts */
 520         si->p_total = total_procs;
 521         si->p_active = pref_len = active_procs;
 522
 523         /* pass back a handle */
 524         handle.next_proc = pref;
 525         handle.remaining = active_procs;
 526         return ((caddr_t) & handle);
 527 }
 528
 529 char fmt[128];                  /* static area where result is built */
 530
 531 char *
 532 format_next_process(caddr_t xhandle, char *(*get_userid) (int))
 533 {
 534         struct kinfo_proc *pp;
 535         long cputime;
 536         long ccputime;
 537         double pct;
 538         struct handle *hp;
 539         char status[16];
 540         int state;
 541         int xnice;
 542         char **comm_full;
 543         char *comm;
 544         char cputime_fmt[10], ccputime_fmt[10];
 545
 546         /* find and remember the next proc structure */
 547         hp = (struct handle *)xhandle;
 548         pp = *(hp->next_proc++);
 549         hp->remaining--;
 550
 551         /* get the process's command name */
 552         if (show_fullcmd) {
 553                 if ((comm_full = kvm_getargv(kd, pp, 0)) == NULL) {
 554                         return (fmt);
 555                 }
 556         }
 557         else {
 558                 comm = PP(pp, comm);
 559         }
 560
 561         /*
 562          * Convert the process's runtime from microseconds to seconds.  This
 563          * time includes the interrupt time to be in compliance with ps output.
 564         */
 565         cputime = (LP(pp, uticks) + LP(pp, sticks) + LP(pp, iticks)) / 1000000;
 566         ccputime = cputime + PP(pp, cru).ru_stime.tv_sec + PP(pp, cru).ru_utime.tv_sec;
 567         format_time(cputime, cputime_fmt, sizeof(cputime_fmt));
 568         format_time(ccputime, ccputime_fmt, sizeof(ccputime_fmt));
 569
 570         /* calculate the base for cpu percentages */
 571         pct = pctdouble(LP(pp, pctcpu));
 572
 573         /* generate "STATE" field */
 574         switch (state = LP(pp, stat)) {
 575         case LSRUN:
 576                 if (smpmode && LP(pp, tdflags) & TDF_RUNNING)
 577                         sprintf(status, "CPU%d", LP(pp, cpuid));
 578                 else
 579                         strcpy(status, "RUN");
 580                 break;
 581         case LSSLEEP:
 582                 if (LP(pp, wmesg) != NULL) {
 583                         sprintf(status, "%.6s", LP(pp, wmesg));
 584                         break;
 585                 }
 586                 /* fall through */
 587         default:
 588
 589                 if (state >= 0 &&
 590                     (unsigned)state < sizeof(state_abbrev) / sizeof(*state_abbrev))
 591                         sprintf(status, "%.6s", state_abbrev[(unsigned char)state]);
 592                 else
 593                         sprintf(status, "?%5d", state);
 594                 break;
 595         }
 596
 597         if (PP(pp, stat) == SZOMB)
 598                 strcpy(status, "ZOMB");
 599
 600         /*
 601          * idle time 0 - 31 -> nice value +21 - +52 normal time      -> nice
 602          * value -20 - +20 real time 0 - 31 -> nice value -52 - -21 thread
 603          * 0 - 31 -> nice value -53 -
 604          */
 605         switch (LP(pp, rtprio.type)) {
 606         case RTP_PRIO_REALTIME:
 607                 xnice = PRIO_MIN - 1 - RTP_PRIO_MAX + LP(pp, rtprio.prio);
 608                 break;
 609         case RTP_PRIO_IDLE:
 610                 xnice = PRIO_MAX + 1 + LP(pp, rtprio.prio);
 611                 break;
 612         case RTP_PRIO_THREAD:
 613                 xnice = PRIO_MIN - 1 - RTP_PRIO_MAX - LP(pp, rtprio.prio);
 614                 break;
 615         default:
 616                 xnice = PP(pp, nice);
 617                 break;
 618         }
 619
 620         /* format this entry */
 621         snprintf(fmt, sizeof(fmt),
 622             smpmode ? smp_Proc_format : up_Proc_format,
 623             (int)PP(pp, pid),
 624             namelength, namelength,
 625             get_userid(PP(pp, ruid)),
 626             (int)((show_threads && (LP(pp, pid) == -1)) ?
 627             LP(pp, tdprio) : LP(pp, prio)),
 628             (int)xnice,
 629             format_k(PROCSIZE(pp)),
 630             format_k(pagetok(VP(pp, rssize))),
 631             status,
 632             (int)(smpmode ? LP(pp, cpuid) : 0),
 633             cputime_fmt,
 634             ccputime_fmt,
 635             100.0 * pct,
 636             cmdlength,
 637             show_fullcmd ? *comm_full : comm);
 638
 639         /* return the result */
 640         return (fmt);
 641 }
 642
 643 /* comparison routines for qsort */
 644
 645 /*
 646  *  proc_compare - comparison function for "qsort"
 647  *      Compares the resource consumption of two processes using five
 648  *      distinct keys.  The keys (in descending order of importance) are:
 649  *      percent cpu, cpu ticks, state, resident set size, total virtual
 650  *      memory usage.  The process states are ordered as follows (from least
 651  *      to most important):  WAIT, zombie, sleep, stop, start, run.  The
 652  *      array declaration below maps a process state index into a number
 653  *      that reflects this ordering.
 654  */
 655
 656 static unsigned char sorted_state[] =
 657 {
 658         0,                      /* not used              */
 659         3,                      /* sleep                 */
 660         1,                      /* ABANDONED (WAIT)      */
 661         6,                      /* run                   */
 662         5,                      /* start                 */
 663         2,                      /* zombie                */
 664         4                       /* stop                  */
 665 };
 666
 667
 668 #define ORDERKEY_PCTCPU \
 669   if (lresult = (long) LP(p2, pctcpu) - (long) LP(p1, pctcpu), \
 670      (result = lresult > 0 ? 1 : lresult < 0 ? -1 : 0) == 0)
 671
 672 #define CPTICKS(p)      (LP(p, uticks) + LP(p, sticks) + LP(p, iticks))
 673
 674 #define ORDERKEY_CPTICKS \
 675   if ((result = CPTICKS(p2) > CPTICKS(p1) ? 1 : \
 676                 CPTICKS(p2) < CPTICKS(p1) ? -1 : 0) == 0)
 677
 678 #define CTIME(p)        (((LP(p, uticks) + LP(p, sticks) + LP(p, iticks))/1000000) + \
 679   PP(p, cru).ru_stime.tv_sec + PP(p, cru).ru_utime.tv_sec)
 680
 681 #define ORDERKEY_CTIME \
 682    if ((result = CTIME(p2) > CTIME(p1) ? 1 : \
 683                 CTIME(p2) < CTIME(p1) ? -1 : 0) == 0)
 684
 685 #define ORDERKEY_STATE \
 686   if ((result = sorted_state[(unsigned char) PP(p2, stat)] - \
 687                 sorted_state[(unsigned char) PP(p1, stat)]) == 0)
 688
 689 #define ORDERKEY_PRIO \
 690   if ((result = LP(p2, prio) - LP(p1, prio)) == 0)
 691
 692 #define ORDERKEY_KTHREADS \
 693   if ((result = (LP(p1, pid) == 0) - (LP(p2, pid) == 0)) == 0)
 694
 695 #define ORDERKEY_KTHREADS_PRIO \
 696   if ((result = LP(p2, tdprio) - LP(p1, tdprio)) == 0)
 697
 698 #define ORDERKEY_RSSIZE \
 699   if ((result = VP(p2, rssize) - VP(p1, rssize)) == 0)
 700
 701 #define ORDERKEY_MEM \
 702   if ( (result = PROCSIZE(p2) - PROCSIZE(p1)) == 0 )
 703
 704 #define ORDERKEY_PID \
 705   if ( (result = PP(p1, pid) - PP(p2, pid)) == 0)
 706
 707 /* compare_cpu - the comparison function for sorting by cpu percentage */
 708
 709 int
 710 proc_compare(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
 711 {
 712         struct kinfo_proc *p1;
 713         struct kinfo_proc *p2;
 714         int result;
 715         pctcpu lresult;
 716
 717         /* remove one level of indirection */
 718         p1 = *(struct kinfo_proc **) pp1;
 719         p2 = *(struct kinfo_proc **) pp2;
 720
 721         ORDERKEY_PCTCPU
 722         ORDERKEY_CPTICKS
 723         ORDERKEY_STATE
 724         ORDERKEY_PRIO
 725         ORDERKEY_RSSIZE
 726         ORDERKEY_MEM
 727         {}
 728
 729         return (result);
 730 }
 731
 732 /* compare_size - the comparison function for sorting by total memory usage */
 733
 734 int
 735 compare_size(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
 736 {
 737         struct kinfo_proc *p1;
 738         struct kinfo_proc *p2;
 739         int result;
 740         pctcpu lresult;
 741
 742         /* remove one level of indirection */
 743         p1 = *(struct kinfo_proc **) pp1;
 744         p2 = *(struct kinfo_proc **) pp2;
 745
 746         ORDERKEY_MEM
 747         ORDERKEY_RSSIZE
 748         ORDERKEY_PCTCPU
 749         ORDERKEY_CPTICKS
 750         ORDERKEY_STATE
 751         ORDERKEY_PRIO
 752         {}
 753
 754         return (result);
 755 }
 756
 757 /* compare_res - the comparison function for sorting by resident set size */
 758
 759 int
 760 compare_res(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
 761 {
 762         struct kinfo_proc *p1;
 763         struct kinfo_proc *p2;
 764         int result;
 765         pctcpu lresult;
 766
 767         /* remove one level of indirection */
 768         p1 = *(struct kinfo_proc **) pp1;
 769         p2 = *(struct kinfo_proc **) pp2;
 770
 771         ORDERKEY_RSSIZE
 772         ORDERKEY_MEM
 773         ORDERKEY_PCTCPU
 774         ORDERKEY_CPTICKS
 775         ORDERKEY_STATE
 776         ORDERKEY_PRIO
 777         {}
 778
 779         return (result);
 780 }
 781
 782 /* compare_time - the comparison function for sorting by total cpu time */
 783
 784 int
 785 compare_time(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
 786 {
 787         struct kinfo_proc *p1;
 788         struct kinfo_proc *p2;
 789         int result;
 790         pctcpu lresult;
 791
 792         /* remove one level of indirection */
 793         p1 = *(struct kinfo_proc **) pp1;
 794         p2 = *(struct kinfo_proc **) pp2;
 795
 796         ORDERKEY_CPTICKS
 797         ORDERKEY_PCTCPU
 798         ORDERKEY_KTHREADS
 799         ORDERKEY_KTHREADS_PRIO
 800         ORDERKEY_STATE
 801         ORDERKEY_PRIO
 802         ORDERKEY_RSSIZE
 803         ORDERKEY_MEM
 804         {}
 805
 806         return (result);
 807 }
 808
 809 int
 810 compare_ctime(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
 811 {
 812         struct kinfo_proc *p1;
 813         struct kinfo_proc *p2;
 814         int result;
 815         pctcpu lresult;
 816
 817         /* remove one level of indirection */
 818         p1 = *(struct kinfo_proc **) pp1;
 819         p2 = *(struct kinfo_proc **) pp2;
 820
 821         ORDERKEY_CTIME
 822         ORDERKEY_PCTCPU
 823         ORDERKEY_KTHREADS
 824         ORDERKEY_KTHREADS_PRIO
 825         ORDERKEY_STATE
 826         ORDERKEY_PRIO
 827         ORDERKEY_RSSIZE
 828         ORDERKEY_MEM
 829         {}
 830
 831         return (result);
 832 }
 833
 834 /* compare_prio - the comparison function for sorting by cpu percentage */
 835
 836 int
 837 compare_prio(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
 838 {
 839         struct kinfo_proc *p1;
 840         struct kinfo_proc *p2;
 841         int result;
 842         pctcpu lresult;
 843
 844         /* remove one level of indirection */
 845         p1 = *(struct kinfo_proc **) pp1;
 846         p2 = *(struct kinfo_proc **) pp2;
 847
 848         ORDERKEY_KTHREADS
 849         ORDERKEY_KTHREADS_PRIO
 850         ORDERKEY_PRIO
 851         ORDERKEY_CPTICKS
 852         ORDERKEY_PCTCPU
 853         ORDERKEY_STATE
 854         ORDERKEY_RSSIZE
 855         ORDERKEY_MEM
 856         {}
 857
 858         return (result);
 859 }
 860
 861 int
 862 compare_thr(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
 863 {
 864         struct kinfo_proc *p1;
 865         struct kinfo_proc *p2;
 866         int result;
 867         pctcpu lresult;
 868
 869         /* remove one level of indirection */
 870         p1 = *(struct kinfo_proc **)pp1;
 871         p2 = *(struct kinfo_proc **)pp2;
 872
 873         ORDERKEY_KTHREADS
 874         ORDERKEY_KTHREADS_PRIO
 875         ORDERKEY_CPTICKS
 876         ORDERKEY_PCTCPU
 877         ORDERKEY_STATE
 878         ORDERKEY_RSSIZE
 879         ORDERKEY_MEM
 880         {}
 881
 882         return (result);
 883 }
 884
 885 /* compare_pid - the comparison function for sorting by process id */
 886
 887 int
 888 compare_pid(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
 889 {
 890         struct kinfo_proc *p1;
 891         struct kinfo_proc *p2;
 892         int result;
 893
 894         /* remove one level of indirection */
 895         p1 = *(struct kinfo_proc **) pp1;
 896         p2 = *(struct kinfo_proc **) pp2;
 897
 898         ORDERKEY_PID
 899         ;
 900
 901         return(result);
 902 }
 903
 904 /*
 905  * proc_owner(pid) - returns the uid that owns process "pid", or -1 if
 906  *              the process does not exist.
 907  *              It is EXTREMLY IMPORTANT that this function work correctly.
 908  *              If top runs setuid root (as in SVR4), then this function
 909  *              is the only thing that stands in the way of a serious
 910  *              security problem.  It validates requests for the "kill"
 911  *              and "renice" commands.
 912  */
 913
 914 int
 915 proc_owner(int pid)
 916 {
 917         int xcnt;
 918         struct kinfo_proc **prefp;
 919         struct kinfo_proc *pp;
 920
 921         prefp = pref;
 922         xcnt = pref_len;
 923         while (--xcnt >= 0) {
 924                 pp = *prefp++;
 925                 if (PP(pp, pid) == (pid_t) pid) {
 926                         return ((int)PP(pp, ruid));
 927                 }
 928         }
 929         return (-1);
 930 }
 931
 932
 933 /*
 934  * swapmode is based on a program called swapinfo written
 935  * by Kevin Lahey <kml@rokkaku.atl.ga.us>.
 936  */
 937 int
 938 swapmode(int *retavail, int *retfree)
 939 {
 940         int n;
 941         int pagesize = getpagesize();
 942         struct kvm_swap swapary[1];
 943
 944         *retavail = 0;
 945         *retfree = 0;
 946
 947 #define CONVERT(v)      ((quad_t)(v) * pagesize / 1024)
 948
 949         n = kvm_getswapinfo(kd, swapary, 1, 0);
 950         if (n < 0 || swapary[0].ksw_total == 0)
 951                 return (0);
 952
 953         *retavail = CONVERT(swapary[0].ksw_total);
 954         *retfree = CONVERT(swapary[0].ksw_total - swapary[0].ksw_used);
 955
 956         n = (int)((double)swapary[0].ksw_used * 100.0 /
 957             (double)swapary[0].ksw_total);
 958         return (n);
 959 }