1 /* 2 * top - a top users display for Unix 3 * 4 * SYNOPSIS: For FreeBSD-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 FreeBSD 2.2 13 * Works for: 14 * FreeBSD 2.2.x, 3.x, 4.x, and probably FreeBSD 2.1.x 15 * 16 * LIBS: -lkvm 17 * 18 * AUTHOR: Christos Zoulas <christos@ee.cornell.edu> 19 * Steven Wallace <swallace@freebsd.org> 20 * Wolfram Schneider <wosch@FreeBSD.org> 21 * Thomas Moestl <tmoestl@gmx.net> 22 * 23 * $FreeBSD$ 24 */ 25 26 27 #include <sys/time.h> 28 #include <sys/types.h> 29 #include <sys/signal.h> 30 #include <sys/param.h> 31 32 #include "os.h" 33 #include <stdio.h> 34 #include <nlist.h> 35 #include <math.h> 36 #include <kvm.h> 37 #include <pwd.h> 38 #include <sys/errno.h> 39 #include <sys/sysctl.h> 40 #include <sys/dkstat.h> 41 #include <sys/file.h> 42 #include <sys/time.h> 43 #include <sys/proc.h> 44 #include <sys/user.h> 45 #include <sys/vmmeter.h> 46 #include <sys/resource.h> 47 #include <sys/rtprio.h> 48 49 /* Swap */ 50 #include <stdlib.h> 51 52 #include <unistd.h> 53 #include <osreldate.h> /* for changes in kernel structures */ 54 55 #include "top.h" 56 #include "machine.h" 57 #include "screen.h" 58 #include "utils.h" 59 60 static void getsysctl(char *, void *, size_t); 61 62 #define GETSYSCTL(name, var) getsysctl(name, &(var), sizeof(var)) 63 64 extern char* printable(char *); 65 int swapmode(int *retavail, int *retfree); 66 static int smpmode; 67 static int namelength; 68 static int cmdlengthdelta; 69 70 /* Prototypes for top internals */ 71 void quit(int); 72 73 /* get_process_info passes back a handle. This is what it looks like: */ 74 75 struct handle 76 { 77 struct kinfo_proc **next_proc; /* points to next valid proc pointer */ 78 int remaining; /* number of pointers remaining */ 79 }; 80 81 /* declarations for load_avg */ 82 #include "loadavg.h" 83 84 /* define what weighted cpu is. */ 85 #define weighted_cpu(pct, pp) ((pp)->ki_swtime == 0 ? 0.0 : \ 86 ((pct) / (1.0 - exp((pp)->ki_swtime * logcpu)))) 87 88 /* what we consider to be process size: */ 89 #define PROCSIZE(pp) ((pp)->ki_size / 1024) 90 91 /* definitions for indices in the nlist array */ 92 93 /* 94 * These definitions control the format of the per-process area 95 */ 96 97 static char smp_header[] = 98 " PID %-*.*s PRI NICE SIZE RES STATE C TIME WCPU CPU COMMAND"; 99 100 #define smp_Proc_format \ 101 "%5d %-*.*s %3d %4d%7s %6s %-6.6s %1x%7s %5.2f%% %5.2f%% %.*s" 102 103 static char up_header[] = 104 " PID %-*.*s PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND"; 105 106 #define up_Proc_format \ 107 "%5d %-*.*s %3d %4d%7s %6s %-6.6s%.0d%7s %5.2f%% %5.2f%% %.*s" 108 109 110 111 /* process state names for the "STATE" column of the display */ 112 /* the extra nulls in the string "run" are for adding a slash and 113 the processor number when needed */ 114 115 char *state_abbrev[] = 116 { 117 "", "START", "RUN\0\0\0", "SLEEP", "STOP", "ZOMB", "WAIT", "LOCK" 118 }; 119 120 121 static kvm_t *kd; 122 123 /* values that we stash away in _init and use in later routines */ 124 125 static double logcpu; 126 127 /* these are retrieved from the kernel in _init */ 128 129 static load_avg ccpu; 130 131 /* these are used in the get_ functions */ 132 133 static int lastpid; 134 135 /* these are for calculating cpu state percentages */ 136 137 static long cp_time[CPUSTATES]; 138 static long cp_old[CPUSTATES]; 139 static long cp_diff[CPUSTATES]; 140 141 /* these are for detailing the process states */ 142 143 int process_states[8]; 144 char *procstatenames[] = { 145 "", " starting, ", " running, ", " sleeping, ", " stopped, ", 146 " zombie, ", " waiting, ", " lock, ", 147 NULL 148 }; 149 150 /* these are for detailing the cpu states */ 151 152 int cpu_states[CPUSTATES]; 153 char *cpustatenames[] = { 154 "user", "nice", "system", "interrupt", "idle", NULL 155 }; 156 157 /* these are for detailing the memory statistics */ 158 159 int memory_stats[7]; 160 char *memorynames[] = { 161 "K Active, ", "K Inact, ", "K Wired, ", "K Cache, ", "K Buf, ", "K Free", 162 NULL 163 }; 164 165 int swap_stats[7]; 166 char *swapnames[] = { 167 /* 0 1 2 3 4 5 */ 168 "K Total, ", "K Used, ", "K Free, ", "% Inuse, ", "K In, ", "K Out", 169 NULL 170 }; 171 172 173 /* these are for keeping track of the proc array */ 174 175 static int nproc; 176 static int onproc = -1; 177 static int pref_len; 178 static struct kinfo_proc *pbase; 179 static struct kinfo_proc **pref; 180 181 /* these are for getting the memory statistics */ 182 183 static int pageshift; /* log base 2 of the pagesize */ 184 185 /* define pagetok in terms of pageshift */ 186 187 #define pagetok(size) ((size) << pageshift) 188 189 /* useful externals */ 190 long percentages(); 191 192 #ifdef ORDER 193 /* sorting orders. first is default */ 194 char *ordernames[] = { 195 "cpu", "size", "res", "time", "pri", NULL 196 }; 197 #endif 198 199 int 200 machine_init(statics) 201 202 struct statics *statics; 203 204 { 205 register int pagesize; 206 size_t modelen; 207 struct passwd *pw; 208 209 modelen = sizeof(smpmode); 210 if ((sysctlbyname("machdep.smp_active", &smpmode, &modelen, NULL, 0) < 0 && 211 sysctlbyname("kern.smp.active", &smpmode, &modelen, NULL, 0) < 0) || 212 modelen != sizeof(smpmode)) 213 smpmode = 0; 214 215 while ((pw = getpwent()) != NULL) { 216 if (strlen(pw->pw_name) > namelength) 217 namelength = strlen(pw->pw_name); 218 } 219 if (namelength < 8) 220 namelength = 8; 221 if (smpmode && namelength > 13) 222 namelength = 13; 223 else if (namelength > 15) 224 namelength = 15; 225 226 if ((kd = kvm_open("/dev/null", "/dev/null", "/dev/null", O_RDONLY, "kvm_open")) == NULL) 227 return -1; 228 229 GETSYSCTL("kern.ccpu", ccpu); 230 231 /* this is used in calculating WCPU -- calculate it ahead of time */ 232 logcpu = log(loaddouble(ccpu)); 233 234 pbase = NULL; 235 pref = NULL; 236 nproc = 0; 237 onproc = -1; 238 /* get the page size with "getpagesize" and calculate pageshift from it */ 239 pagesize = getpagesize(); 240 pageshift = 0; 241 while (pagesize > 1) 242 { 243 pageshift++; 244 pagesize >>= 1; 245 } 246 247 /* we only need the amount of log(2)1024 for our conversion */ 248 pageshift -= LOG1024; 249 250 /* fill in the statics information */ 251 statics->procstate_names = procstatenames; 252 statics->cpustate_names = cpustatenames; 253 statics->memory_names = memorynames; 254 statics->swap_names = swapnames; 255 #ifdef ORDER 256 statics->order_names = ordernames; 257 #endif 258 259 /* all done! */ 260 return(0); 261 } 262 263 char *format_header(uname_field) 264 265 register char *uname_field; 266 267 { 268 static char Header[128]; 269 270 snprintf(Header, sizeof(Header), smpmode ? smp_header : up_header, 271 namelength, namelength, uname_field); 272 273 cmdlengthdelta = strlen(Header) - 7; 274 275 return Header; 276 } 277 278 static int swappgsin = -1; 279 static int swappgsout = -1; 280 extern struct timeval timeout; 281 282 void 283 get_system_info(si) 284 285 struct system_info *si; 286 287 { 288 long total; 289 struct loadavg sysload; 290 int mib[2]; 291 struct timeval boottime; 292 size_t bt_size; 293 294 /* get the cp_time array */ 295 GETSYSCTL("kern.cp_time", cp_time); 296 GETSYSCTL("vm.loadavg", sysload); 297 GETSYSCTL("kern.lastpid", lastpid); 298 299 /* convert load averages to doubles */ 300 { 301 register int i; 302 register double *infoloadp; 303 304 infoloadp = si->load_avg; 305 for (i = 0; i < 3; i++) 306 { 307 #ifdef notyet 308 *infoloadp++ = ((double) sysload.ldavg[i]) / sysload.fscale; 309 #endif 310 *infoloadp++ = loaddouble(sysload.ldavg[i]); 311 } 312 } 313 314 /* convert cp_time counts to percentages */ 315 total = percentages(CPUSTATES, cpu_states, cp_time, cp_old, cp_diff); 316 317 /* sum memory & swap statistics */ 318 { 319 static unsigned int swap_delay = 0; 320 static int swapavail = 0; 321 static int swapfree = 0; 322 static int bufspace = 0; 323 static int nspgsin, nspgsout; 324 325 GETSYSCTL("vfs.bufspace", bufspace); 326 GETSYSCTL("vm.stats.vm.v_active_count", memory_stats[0]); 327 GETSYSCTL("vm.stats.vm.v_inactive_count", memory_stats[1]); 328 GETSYSCTL("vm.stats.vm.v_wire_count", memory_stats[2]); 329 GETSYSCTL("vm.stats.vm.v_cache_count", memory_stats[3]); 330 GETSYSCTL("vm.stats.vm.v_free_count", memory_stats[5]); 331 GETSYSCTL("vm.stats.vm.v_swappgsin", nspgsin); 332 GETSYSCTL("vm.stats.vm.v_swappgsout", nspgsout); 333 /* convert memory stats to Kbytes */ 334 memory_stats[0] = pagetok(memory_stats[0]); 335 memory_stats[1] = pagetok(memory_stats[1]); 336 memory_stats[2] = pagetok(memory_stats[2]); 337 memory_stats[3] = pagetok(memory_stats[3]); 338 memory_stats[4] = bufspace / 1024; 339 memory_stats[5] = pagetok(memory_stats[5]); 340 memory_stats[6] = -1; 341 342 /* first interval */ 343 if (swappgsin < 0) { 344 swap_stats[4] = 0; 345 swap_stats[5] = 0; 346 } 347 348 /* compute differences between old and new swap statistic */ 349 else { 350 swap_stats[4] = pagetok(((nspgsin - swappgsin))); 351 swap_stats[5] = pagetok(((nspgsout - swappgsout))); 352 } 353 354 swappgsin = nspgsin; 355 swappgsout = nspgsout; 356 357 /* call CPU heavy swapmode() only for changes */ 358 if (swap_stats[4] > 0 || swap_stats[5] > 0 || swap_delay == 0) { 359 swap_stats[3] = swapmode(&swapavail, &swapfree); 360 swap_stats[0] = swapavail; 361 swap_stats[1] = swapavail - swapfree; 362 swap_stats[2] = swapfree; 363 } 364 swap_delay = 1; 365 swap_stats[6] = -1; 366 } 367 368 /* set arrays and strings */ 369 si->cpustates = cpu_states; 370 si->memory = memory_stats; 371 si->swap = swap_stats; 372 373 374 if(lastpid > 0) { 375 si->last_pid = lastpid; 376 } else { 377 si->last_pid = -1; 378 } 379 380 /* 381 * Print how long system has been up. 382 * (Found by looking getting "boottime" from the kernel) 383 */ 384 mib[0] = CTL_KERN; 385 mib[1] = KERN_BOOTTIME; 386 bt_size = sizeof(boottime); 387 if (sysctl(mib, 2, &boottime, &bt_size, NULL, 0) != -1 && 388 boottime.tv_sec != 0) { 389 si->boottime = boottime; 390 } else { 391 si->boottime.tv_sec = -1; 392 } 393 } 394 395 static struct handle handle; 396 397 caddr_t get_process_info(si, sel, compare) 398 399 struct system_info *si; 400 struct process_select *sel; 401 int (*compare)(); 402 403 { 404 register int i; 405 register int total_procs; 406 register int active_procs; 407 register struct kinfo_proc **prefp; 408 register struct kinfo_proc *pp; 409 410 /* these are copied out of sel for speed */ 411 int show_idle; 412 int show_self; 413 int show_system; 414 int show_uid; 415 int show_command; 416 417 418 pbase = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nproc); 419 if (nproc > onproc) 420 pref = (struct kinfo_proc **) realloc(pref, sizeof(struct kinfo_proc *) 421 * (onproc = nproc)); 422 if (pref == NULL || pbase == NULL) { 423 (void) fprintf(stderr, "top: Out of memory.\n"); 424 quit(23); 425 } 426 /* get a pointer to the states summary array */ 427 si->procstates = process_states; 428 429 /* set up flags which define what we are going to select */ 430 show_idle = sel->idle; 431 show_self = sel->self; 432 show_system = sel->system; 433 show_uid = sel->uid != -1; 434 show_command = sel->command != NULL; 435 436 /* count up process states and get pointers to interesting procs */ 437 total_procs = 0; 438 active_procs = 0; 439 memset((char *)process_states, 0, sizeof(process_states)); 440 prefp = pref; 441 for (pp = pbase, i = 0; i < nproc; pp++, i++) 442 { 443 /* 444 * Place pointers to each valid proc structure in pref[]. 445 * Process slots that are actually in use have a non-zero 446 * status field. Processes with P_SYSTEM set are system 447 * processes---these get ignored unless show_sysprocs is set. 448 */ 449 if (pp->ki_stat != 0 && 450 (show_self != pp->ki_pid) && 451 (show_system || ((pp->ki_flag & P_SYSTEM) == 0))) 452 { 453 total_procs++; 454 process_states[(unsigned char) pp->ki_stat]++; 455 if ((pp->ki_stat != SZOMB) && 456 (show_idle || (pp->ki_pctcpu != 0) || 457 (pp->ki_stat == SRUN)) && 458 (!show_uid || pp->ki_ruid == (uid_t)sel->uid)) 459 { 460 *prefp++ = pp; 461 active_procs++; 462 } 463 } 464 } 465 466 /* if requested, sort the "interesting" processes */ 467 if (compare != NULL) 468 { 469 qsort((char *)pref, active_procs, sizeof(struct kinfo_proc *), compare); 470 } 471 472 /* remember active and total counts */ 473 si->p_total = total_procs; 474 si->p_active = pref_len = active_procs; 475 476 /* pass back a handle */ 477 handle.next_proc = pref; 478 handle.remaining = active_procs; 479 return((caddr_t)&handle); 480 } 481 482 char fmt[128]; /* static area where result is built */ 483 484 char *format_next_process(handle, get_userid) 485 486 caddr_t handle; 487 char *(*get_userid)(); 488 489 { 490 register struct kinfo_proc *pp; 491 register long cputime; 492 register double pct; 493 struct handle *hp; 494 char status[16]; 495 int state; 496 497 /* find and remember the next proc structure */ 498 hp = (struct handle *)handle; 499 pp = *(hp->next_proc++); 500 hp->remaining--; 501 502 /* get the process's command name */ 503 if ((pp->ki_sflag & PS_INMEM) == 0) { 504 /* 505 * Print swapped processes as <pname> 506 */ 507 char *comm = pp->ki_comm; 508 #define COMSIZ sizeof(pp->ki_comm) 509 char buf[COMSIZ]; 510 (void) strncpy(buf, comm, COMSIZ); 511 comm[0] = '<'; 512 (void) strncpy(&comm[1], buf, COMSIZ - 2); 513 comm[COMSIZ - 2] = '\0'; 514 (void) strncat(comm, ">", COMSIZ - 1); 515 comm[COMSIZ - 1] = '\0'; 516 } 517 518 /* 519 * Convert the process's runtime from microseconds to seconds. This 520 * time includes the interrupt time although that is not wanted here. 521 * ps(1) is similarly sloppy. 522 */ 523 cputime = (pp->ki_runtime + 500000) / 1000000; 524 525 /* calculate the base for cpu percentages */ 526 pct = pctdouble(pp->ki_pctcpu); 527 528 /* generate "STATE" field */ 529 switch (state = pp->ki_stat) { 530 case SRUN: 531 if (smpmode && pp->ki_oncpu != 0xff) 532 sprintf(status, "CPU%d", pp->ki_oncpu); 533 else 534 strcpy(status, "RUN"); 535 break; 536 case SLOCK: 537 if (pp->ki_kiflag & KI_LOCKBLOCK) { 538 sprintf(status, "*%.6s", pp->ki_lockname); 539 break; 540 } 541 /* fall through */ 542 case SSLEEP: 543 if (pp->ki_wmesg != NULL) { 544 sprintf(status, "%.6s", pp->ki_wmesg); 545 break; 546 } 547 /* FALLTHROUGH */ 548 default: 549 550 if (state >= 0 && 551 state < sizeof(state_abbrev) / sizeof(*state_abbrev)) 552 sprintf(status, "%.6s", state_abbrev[(unsigned char) state]); 553 else 554 sprintf(status, "?%5d", state); 555 break; 556 } 557 558 /* format this entry */ 559 sprintf(fmt, 560 smpmode ? smp_Proc_format : up_Proc_format, 561 pp->ki_pid, 562 namelength, namelength, 563 (*get_userid)(pp->ki_ruid), 564 pp->ki_pri.pri_level - PZERO, 565 566 /* 567 * normal time -> nice value -20 - +20 568 * real time 0 - 31 -> nice value -52 - -21 569 * idle time 0 - 31 -> nice value +21 - +52 570 */ 571 (pp->ki_pri.pri_class == PRI_TIMESHARE ? 572 pp->ki_nice - NZERO : 573 (PRI_IS_REALTIME(pp->ki_pri.pri_class) ? 574 (PRIO_MIN - 1 - (PRI_MAX_REALTIME - pp->ki_pri.pri_level)) : 575 (PRIO_MAX + 1 + pp->ki_pri.pri_level - PRI_MIN_IDLE))), 576 format_k2(PROCSIZE(pp)), 577 format_k2(pagetok(pp->ki_rssize)), 578 status, 579 smpmode ? pp->ki_lastcpu : 0, 580 format_time(cputime), 581 100.0 * weighted_cpu(pct, pp), 582 100.0 * pct, 583 screen_width > cmdlengthdelta ? 584 screen_width - cmdlengthdelta : 585 0, 586 printable(pp->ki_comm)); 587 588 /* return the result */ 589 return(fmt); 590 } 591 592 static void getsysctl (name, ptr, len) 593 594 char *name; 595 void *ptr; 596 size_t len; 597 598 { 599 size_t nlen = len; 600 if (sysctlbyname(name, ptr, &nlen, NULL, 0) == -1) { 601 fprintf(stderr, "top: sysctl(%s...) failed: %s\n", name, 602 strerror(errno)); 603 quit(23); 604 } 605 if (nlen != len) { 606 fprintf(stderr, "top: sysctl(%s...) expected %lu, got %lu\n", name, 607 (unsigned long)len, (unsigned long)nlen); 608 quit(23); 609 } 610 } 611 612 /* comparison routines for qsort */ 613 614 /* 615 * proc_compare - comparison function for "qsort" 616 * Compares the resource consumption of two processes using five 617 * distinct keys. The keys (in descending order of importance) are: 618 * percent cpu, cpu ticks, state, resident set size, total virtual 619 * memory usage. The process states are ordered as follows (from least 620 * to most important): WAIT, zombie, sleep, stop, start, run. The 621 * array declaration below maps a process state index into a number 622 * that reflects this ordering. 623 */ 624 625 static unsigned char sorted_state[] = 626 { 627 0, /* not used */ 628 3, /* sleep */ 629 1, /* ABANDONED (WAIT) */ 630 6, /* run */ 631 5, /* start */ 632 2, /* zombie */ 633 4 /* stop */ 634 }; 635 636 637 #define ORDERKEY_PCTCPU \ 638 if (lresult = (long) p2->ki_pctcpu - (long) p1->ki_pctcpu, \ 639 (result = lresult > 0 ? 1 : lresult < 0 ? -1 : 0) == 0) 640 641 #define ORDERKEY_CPTICKS \ 642 if ((result = p2->ki_runtime > p1->ki_runtime ? 1 : \ 643 p2->ki_runtime < p1->ki_runtime ? -1 : 0) == 0) 644 645 #define ORDERKEY_STATE \ 646 if ((result = sorted_state[(unsigned char) p2->ki_stat] - \ 647 sorted_state[(unsigned char) p1->ki_stat]) == 0) 648 649 #define ORDERKEY_PRIO \ 650 if ((result = p2->ki_pri.pri_level - p1->ki_pri.pri_level) == 0) 651 652 #define ORDERKEY_RSSIZE \ 653 if ((result = p2->ki_rssize - p1->ki_rssize) == 0) 654 655 #define ORDERKEY_MEM \ 656 if ( (result = PROCSIZE(p2) - PROCSIZE(p1)) == 0 ) 657 658 /* compare_cpu - the comparison function for sorting by cpu percentage */ 659 660 int 661 #ifdef ORDER 662 compare_cpu(pp1, pp2) 663 #else 664 proc_compare(pp1, pp2) 665 #endif 666 667 struct proc **pp1; 668 struct proc **pp2; 669 670 { 671 register struct kinfo_proc *p1; 672 register struct kinfo_proc *p2; 673 register int result; 674 register pctcpu lresult; 675 676 /* remove one level of indirection */ 677 p1 = *(struct kinfo_proc **) pp1; 678 p2 = *(struct kinfo_proc **) pp2; 679 680 ORDERKEY_PCTCPU 681 ORDERKEY_CPTICKS 682 ORDERKEY_STATE 683 ORDERKEY_PRIO 684 ORDERKEY_RSSIZE 685 ORDERKEY_MEM 686 ; 687 688 return(result); 689 } 690 691 #ifdef ORDER 692 /* compare routines */ 693 int compare_size(), compare_res(), compare_time(), compare_prio(); 694 695 int (*proc_compares[])() = { 696 compare_cpu, 697 compare_size, 698 compare_res, 699 compare_time, 700 compare_prio, 701 NULL 702 }; 703 704 /* compare_size - the comparison function for sorting by total memory usage */ 705 706 int 707 compare_size(pp1, pp2) 708 709 struct proc **pp1; 710 struct proc **pp2; 711 712 { 713 register struct kinfo_proc *p1; 714 register struct kinfo_proc *p2; 715 register int result; 716 register pctcpu lresult; 717 718 /* remove one level of indirection */ 719 p1 = *(struct kinfo_proc **) pp1; 720 p2 = *(struct kinfo_proc **) pp2; 721 722 ORDERKEY_MEM 723 ORDERKEY_RSSIZE 724 ORDERKEY_PCTCPU 725 ORDERKEY_CPTICKS 726 ORDERKEY_STATE 727 ORDERKEY_PRIO 728 ; 729 730 return(result); 731 } 732 733 /* compare_res - the comparison function for sorting by resident set size */ 734 735 int 736 compare_res(pp1, pp2) 737 738 struct proc **pp1; 739 struct proc **pp2; 740 741 { 742 register struct kinfo_proc *p1; 743 register struct kinfo_proc *p2; 744 register int result; 745 register pctcpu lresult; 746 747 /* remove one level of indirection */ 748 p1 = *(struct kinfo_proc **) pp1; 749 p2 = *(struct kinfo_proc **) pp2; 750 751 ORDERKEY_RSSIZE 752 ORDERKEY_MEM 753 ORDERKEY_PCTCPU 754 ORDERKEY_CPTICKS 755 ORDERKEY_STATE 756 ORDERKEY_PRIO 757 ; 758 759 return(result); 760 } 761 762 /* compare_time - the comparison function for sorting by total cpu time */ 763 764 int 765 compare_time(pp1, pp2) 766 767 struct proc **pp1; 768 struct proc **pp2; 769 770 { 771 register struct kinfo_proc *p1; 772 register struct kinfo_proc *p2; 773 register int result; 774 register pctcpu lresult; 775 776 /* remove one level of indirection */ 777 p1 = *(struct kinfo_proc **) pp1; 778 p2 = *(struct kinfo_proc **) pp2; 779 780 ORDERKEY_CPTICKS 781 ORDERKEY_PCTCPU 782 ORDERKEY_STATE 783 ORDERKEY_PRIO 784 ORDERKEY_RSSIZE 785 ORDERKEY_MEM 786 ; 787 788 return(result); 789 } 790 791 /* compare_prio - the comparison function for sorting by cpu percentage */ 792 793 int 794 compare_prio(pp1, pp2) 795 796 struct proc **pp1; 797 struct proc **pp2; 798 799 { 800 register struct kinfo_proc *p1; 801 register struct kinfo_proc *p2; 802 register int result; 803 register pctcpu lresult; 804 805 /* remove one level of indirection */ 806 p1 = *(struct kinfo_proc **) pp1; 807 p2 = *(struct kinfo_proc **) pp2; 808 809 ORDERKEY_PRIO 810 ORDERKEY_CPTICKS 811 ORDERKEY_PCTCPU 812 ORDERKEY_STATE 813 ORDERKEY_RSSIZE 814 ORDERKEY_MEM 815 ; 816 817 return(result); 818 } 819 #endif 820 821 /* 822 * proc_owner(pid) - returns the uid that owns process "pid", or -1 if 823 * the process does not exist. 824 * It is EXTREMLY IMPORTANT that this function work correctly. 825 * If top runs setuid root (as in SVR4), then this function 826 * is the only thing that stands in the way of a serious 827 * security problem. It validates requests for the "kill" 828 * and "renice" commands. 829 */ 830 831 int proc_owner(pid) 832 833 int pid; 834 835 { 836 register int cnt; 837 register struct kinfo_proc **prefp; 838 register struct kinfo_proc *pp; 839 840 prefp = pref; 841 cnt = pref_len; 842 while (--cnt >= 0) 843 { 844 pp = *prefp++; 845 if (pp->ki_pid == (pid_t)pid) 846 { 847 return((int)pp->ki_ruid); 848 } 849 } 850 return(-1); 851 } 852 853 int 854 swapmode(retavail, retfree) 855 int *retavail; 856 int *retfree; 857 { 858 int n; 859 int pagesize = getpagesize(); 860 struct kvm_swap swapary[1]; 861 862 *retavail = 0; 863 *retfree = 0; 864 865 #define CONVERT(v) ((quad_t)(v) * pagesize / 1024) 866 867 n = kvm_getswapinfo(kd, swapary, 1, 0); 868 if (n < 0 || swapary[0].ksw_total == 0) 869 return(0); 870 871 *retavail = CONVERT(swapary[0].ksw_total); 872 *retfree = CONVERT(swapary[0].ksw_total - swapary[0].ksw_used); 873 874 n = (int)((double)swapary[0].ksw_used * 100.0 / 875 (double)swapary[0].ksw_total); 876 return(n); 877 } 878 879