machine.c revision 69370
1322810Shselasky/* 2322810Shselasky * top - a top users display for Unix 3322810Shselasky * 4322810Shselasky * SYNOPSIS: For FreeBSD-2.x and later 5322810Shselasky * 6322810Shselasky * DESCRIPTION: 7322810Shselasky * Originally written for BSD4.4 system by Christos Zoulas. 8322810Shselasky * Ported to FreeBSD 2.x by Steven Wallace && Wolfram Schneider 9322810Shselasky * Order support hacked in from top-3.5beta6/machine/m_aix41.c 10322810Shselasky * by Monte Mitzelfelt (for latest top see http://www.groupsys.com/topinfo/) 11322810Shselasky * 12322810Shselasky * This is the machine-dependent module for FreeBSD 2.2 13322810Shselasky * Works for: 14322810Shselasky * FreeBSD 2.2.x, 3.x, 4.x, and probably FreeBSD 2.1.x 15322810Shselasky * 16322810Shselasky * LIBS: -lkvm 17322810Shselasky * 18322810Shselasky * AUTHOR: Christos Zoulas <christos@ee.cornell.edu> 19322810Shselasky * Steven Wallace <swallace@freebsd.org> 20322810Shselasky * Wolfram Schneider <wosch@FreeBSD.org> 21322810Shselasky * 22322810Shselasky * $FreeBSD: head/usr.bin/top/machine.c 69370 2000-11-29 20:22:34Z jhb $ 23322810Shselasky */ 24322810Shselasky 25322810Shselasky 26322810Shselasky#include <sys/time.h> 27322810Shselasky#include <sys/types.h> 28331769Shselasky#include <sys/signal.h> 29322810Shselasky#include <sys/param.h> 30322810Shselasky 31322810Shselasky#include "os.h" 32322810Shselasky#include <stdio.h> 33331769Shselasky#include <nlist.h> 34331769Shselasky#include <math.h> 35331769Shselasky#include <kvm.h> 36322810Shselasky#include <pwd.h> 37331769Shselasky#include <sys/errno.h> 38322810Shselasky#include <sys/sysctl.h> 39322810Shselasky#include <sys/dkstat.h> 40322810Shselasky#include <sys/file.h> 41331769Shselasky#include <sys/time.h> 42331769Shselasky#include <sys/proc.h> 43331769Shselasky#include <sys/user.h> 44331769Shselasky#include <sys/vmmeter.h> 45331769Shselasky#include <sys/resource.h> 46322810Shselasky#include <sys/rtprio.h> 47322810Shselasky 48331769Shselasky/* Swap */ 49331769Shselasky#include <stdlib.h> 50331769Shselasky#include <sys/conf.h> 51322810Shselasky 52322810Shselasky#include <osreldate.h> /* for changes in kernel structures */ 53322810Shselasky 54337101Shselasky#include "top.h" 55337101Shselasky#include "machine.h" 56337101Shselasky 57337101Shselaskystatic int check_nlist __P((struct nlist *)); 58322810Shselaskystatic int getkval __P((unsigned long, int *, int, char *)); 59322810Shselaskyextern char* printable __P((char *)); 60322810Shselaskyint swapmode __P((int *retavail, int *retfree)); 61322810Shselaskystatic int smpmode; 62322810Shselaskystatic int namelength; 63322810Shselaskystatic int cmdlength; 64322810Shselasky 65322810Shselasky 66322810Shselasky/* get_process_info passes back a handle. This is what it looks like: */ 67322810Shselasky 68322810Shselaskystruct handle 69322810Shselasky{ 70337101Shselasky struct kinfo_proc **next_proc; /* points to next valid proc pointer */ 71337101Shselasky int remaining; /* number of pointers remaining */ 72331769Shselasky}; 73331769Shselasky 74322810Shselasky/* declarations for load_avg */ 75331769Shselasky#include "loadavg.h" 76322810Shselasky 77322810Shselasky#define PP(pp, field) ((pp)->kp_proc . field) 78331769Shselasky#define EP(pp, field) ((pp)->kp_eproc . field) 79331769Shselasky#define VP(pp, field) ((pp)->kp_eproc.e_vm . field) 80331769Shselasky 81331769Shselasky/* define what weighted cpu is. */ 82331769Shselasky#define weighted_cpu(pct, pp) (PP((pp), p_swtime) == 0 ? 0.0 : \ 83331769Shselasky ((pct) / (1.0 - exp(PP((pp), p_swtime) * logcpu)))) 84331769Shselasky 85331769Shselasky/* what we consider to be process size: */ 86331769Shselasky#define PROCSIZE(pp) (VP((pp), vm_map.size) / 1024) 87331769Shselasky 88331769Shselasky/* definitions for indices in the nlist array */ 89331769Shselasky 90322810Shselaskystatic struct nlist nlst[] = { 91331769Shselasky#define X_CCPU 0 92331769Shselasky { "_ccpu" }, 93331769Shselasky#define X_CP_TIME 1 94331769Shselasky { "_cp_time" }, 95331769Shselasky#define X_AVENRUN 2 96322810Shselasky { "_averunnable" }, 97331769Shselasky 98331769Shselasky#define X_BUFSPACE 3 99331769Shselasky { "_bufspace" }, /* K in buffer cache */ 100331769Shselasky#define X_CNT 4 101331769Shselasky { "_cnt" }, /* struct vmmeter cnt */ 102331769Shselasky 103322810Shselasky/* Last pid */ 104331769Shselasky#define X_LASTPID 5 105331769Shselasky { "_nextpid" }, 106331769Shselasky { 0 } 107331769Shselasky}; 108331769Shselasky 109331769Shselasky/* 110322810Shselasky * These definitions control the format of the per-process area 111331769Shselasky */ 112331769Shselasky 113331769Shselaskystatic char smp_header[] = 114331769Shselasky " PID %-*.*s PRI NICE SIZE RES STATE C TIME WCPU CPU COMMAND"; 115331769Shselasky 116331769Shselasky#define smp_Proc_format \ 117322810Shselasky "%5d %-*.*s %3d %3d%7s %6s %-6.6s %1x%7s %5.2f%% %5.2f%% %.*s" 118331769Shselasky 119331769Shselaskystatic char up_header[] = 120331769Shselasky " PID %-*.*s PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND"; 121331769Shselasky 122331769Shselasky#define up_Proc_format \ 123331769Shselasky "%5d %-*.*s %3d %3d%7s %6s %-6.6s%.0d%7s %5.2f%% %5.2f%% %.*s" 124331769Shselasky 125331769Shselasky 126331769Shselasky 127331769Shselasky/* process state names for the "STATE" column of the display */ 128331769Shselasky/* the extra nulls in the string "run" are for adding a slash and 129331769Shselasky the processor number when needed */ 130331769Shselasky 131331769Shselaskychar *state_abbrev[] = 132331769Shselasky{ 133331769Shselasky "", "START", "RUN\0\0\0", "SLEEP", "STOP", "ZOMB", "WAIT", "MUTEX" 134331769Shselasky}; 135331769Shselasky 136331769Shselasky 137331769Shselaskystatic kvm_t *kd; 138331769Shselasky 139331769Shselasky/* values that we stash away in _init and use in later routines */ 140331769Shselasky 141331769Shselaskystatic double logcpu; 142322810Shselasky 143331769Shselasky/* these are retrieved from the kernel in _init */ 144322810Shselasky 145322810Shselaskystatic load_avg ccpu; 146331769Shselasky 147331769Shselasky/* these are offsets obtained via nlist and used in the get_ functions */ 148322810Shselasky 149331769Shselaskystatic unsigned long cp_time_offset; 150331769Shselaskystatic unsigned long avenrun_offset; 151322810Shselaskystatic unsigned long lastpid_offset; 152322810Shselaskystatic long lastpid; 153331769Shselaskystatic unsigned long cnt_offset; 154331769Shselaskystatic unsigned long bufspace_offset; 155322810Shselaskystatic long cnt; 156331769Shselasky 157331769Shselasky/* these are for calculating cpu state percentages */ 158331769Shselasky 159331769Shselaskystatic long cp_time[CPUSTATES]; 160331769Shselaskystatic long cp_old[CPUSTATES]; 161331769Shselaskystatic long cp_diff[CPUSTATES]; 162331769Shselasky 163331769Shselasky/* these are for detailing the process states */ 164331769Shselasky 165331769Shselaskyint process_states[8]; 166331769Shselaskychar *procstatenames[] = { 167331769Shselasky "", " starting, ", " running, ", " sleeping, ", " stopped, ", 168331769Shselasky " zombie, ", " waiting, ", " mutex, ", 169331769Shselasky NULL 170331805Shselasky}; 171331805Shselasky 172331805Shselasky/* these are for detailing the cpu states */ 173331805Shselasky 174331805Shselaskyint cpu_states[CPUSTATES]; 175331805Shselaskychar *cpustatenames[] = { 176331805Shselasky "user", "nice", "system", "interrupt", "idle", NULL 177331805Shselasky}; 178331805Shselasky 179331805Shselasky/* these are for detailing the memory statistics */ 180331805Shselasky 181331805Shselaskyint memory_stats[7]; 182331805Shselaskychar *memorynames[] = { 183331805Shselasky "K Active, ", "K Inact, ", "K Wired, ", "K Cache, ", "K Buf, ", "K Free", 184331805Shselasky NULL 185331805Shselasky}; 186331805Shselasky 187331805Shselaskyint swap_stats[7]; 188331805Shselaskychar *swapnames[] = { 189331805Shselasky/* 0 1 2 3 4 5 */ 190331805Shselasky "K Total, ", "K Used, ", "K Free, ", "% Inuse, ", "K In, ", "K Out", 191331805Shselasky NULL 192331805Shselasky}; 193331805Shselasky 194331805Shselasky 195331805Shselasky/* these are for keeping track of the proc array */ 196331805Shselasky 197331805Shselaskystatic int nproc; 198331805Shselaskystatic int onproc = -1; 199331805Shselaskystatic int pref_len; 200331805Shselaskystatic struct kinfo_proc *pbase; 201331805Shselaskystatic struct kinfo_proc **pref; 202331805Shselasky 203331805Shselasky/* these are for getting the memory statistics */ 204331805Shselasky 205331805Shselaskystatic int pageshift; /* log base 2 of the pagesize */ 206331805Shselasky 207331805Shselasky/* define pagetok in terms of pageshift */ 208331805Shselasky 209331805Shselasky#define pagetok(size) ((size) << pageshift) 210331805Shselasky 211331805Shselasky/* useful externals */ 212331805Shselaskylong percentages(); 213331805Shselasky 214331805Shselasky#ifdef ORDER 215331805Shselasky/* sorting orders. first is default */ 216331805Shselaskychar *ordernames[] = { 217331805Shselasky "cpu", "size", "res", "time", "pri", NULL 218331805Shselasky}; 219331805Shselasky#endif 220331805Shselasky 221331805Shselaskyint 222331805Shselaskymachine_init(statics) 223331805Shselasky 224331805Shselaskystruct statics *statics; 225331805Shselasky 226331805Shselasky{ 227331805Shselasky register int i = 0; 228331769Shselasky register int pagesize; 229331769Shselasky int modelen; 230331769Shselasky struct passwd *pw; 231322810Shselasky 232331769Shselasky modelen = sizeof(smpmode); 233331769Shselasky if ((sysctlbyname("machdep.smp_active", &smpmode, &modelen, NULL, 0) < 0 && 234331769Shselasky sysctlbyname("smp.smp_active", &smpmode, &modelen, NULL, 0) < 0) || 235331805Shselasky modelen != sizeof(smpmode)) 236331805Shselasky smpmode = 0; 237322810Shselasky 238331769Shselasky while ((pw = getpwent()) != NULL) { 239331769Shselasky if (strlen(pw->pw_name) > namelength) 240331805Shselasky namelength = strlen(pw->pw_name); 241331805Shselasky } 242331805Shselasky if (namelength < 8) 243331805Shselasky namelength = 8; 244331805Shselasky if (namelength > 15) 245331805Shselasky namelength = 15; 246331805Shselasky 247331805Shselasky if ((kd = kvm_open(NULL, NULL, NULL, O_RDONLY, "kvm_open")) == NULL) 248331805Shselasky return -1; 249331805Shselasky 250331769Shselasky 251331769Shselasky /* get the list of symbols we want to access in the kernel */ 252331769Shselasky (void) kvm_nlist(kd, nlst); 253331769Shselasky if (nlst[0].n_type == 0) 254331769Shselasky { 255331769Shselasky fprintf(stderr, "top: nlist failed\n"); 256331769Shselasky return(-1); 257331769Shselasky } 258331769Shselasky 259331769Shselasky /* make sure they were all found */ 260331769Shselasky if (i > 0 && check_nlist(nlst) > 0) 261331769Shselasky { 262331769Shselasky return(-1); 263331769Shselasky } 264331769Shselasky 265331769Shselasky (void) getkval(nlst[X_CCPU].n_value, (int *)(&ccpu), sizeof(ccpu), 266331769Shselasky nlst[X_CCPU].n_name); 267331769Shselasky 268331769Shselasky /* stash away certain offsets for later use */ 269331769Shselasky cp_time_offset = nlst[X_CP_TIME].n_value; 270331769Shselasky avenrun_offset = nlst[X_AVENRUN].n_value; 271331769Shselasky lastpid_offset = nlst[X_LASTPID].n_value; 272331769Shselasky cnt_offset = nlst[X_CNT].n_value; 273331769Shselasky bufspace_offset = nlst[X_BUFSPACE].n_value; 274331769Shselasky 275331769Shselasky /* this is used in calculating WCPU -- calculate it ahead of time */ 276331769Shselasky logcpu = log(loaddouble(ccpu)); 277331769Shselasky 278331769Shselasky pbase = NULL; 279331769Shselasky pref = NULL; 280331769Shselasky nproc = 0; 281331769Shselasky onproc = -1; 282331769Shselasky /* get the page size with "getpagesize" and calculate pageshift from it */ 283331769Shselasky pagesize = getpagesize(); 284331769Shselasky pageshift = 0; 285331769Shselasky while (pagesize > 1) 286331769Shselasky { 287331769Shselasky pageshift++; 288331769Shselasky pagesize >>= 1; 289331769Shselasky } 290337078Shselasky 291331769Shselasky /* we only need the amount of log(2)1024 for our conversion */ 292331769Shselasky pageshift -= LOG1024; 293331769Shselasky 294331769Shselasky /* fill in the statics information */ 295331769Shselasky statics->procstate_names = procstatenames; 296337078Shselasky statics->cpustate_names = cpustatenames; 297337078Shselasky statics->memory_names = memorynames; 298331769Shselasky statics->swap_names = swapnames; 299337078Shselasky#ifdef ORDER 300331769Shselasky statics->order_names = ordernames; 301331769Shselasky#endif 302331769Shselasky 303331769Shselasky /* all done! */ 304331769Shselasky return(0); 305331769Shselasky} 306331769Shselasky 307331769Shselaskychar *format_header(uname_field) 308331769Shselasky 309331769Shselaskyregister char *uname_field; 310322810Shselasky 311331769Shselasky{ 312322810Shselasky register char *ptr; 313331769Shselasky static char Header[128]; 314331769Shselasky 315331769Shselasky snprintf(Header, sizeof(Header), smpmode ? smp_header : up_header, 316331769Shselasky namelength, namelength, uname_field); 317331769Shselasky 318331769Shselasky cmdlength = 80 - strlen(Header) + 6; 319331769Shselasky 320331769Shselasky return Header; 321331769Shselasky} 322331769Shselasky 323331769Shselaskystatic int swappgsin = -1; 324331769Shselaskystatic int swappgsout = -1; 325331769Shselaskyextern struct timeval timeout; 326331769Shselasky 327331769Shselaskyvoid 328322810Shselaskyget_system_info(si) 329322810Shselasky 330331769Shselaskystruct system_info *si; 331331769Shselasky 332331769Shselasky{ 333331769Shselasky long total; 334331769Shselasky load_avg avenrun[3]; 335331769Shselasky int mib[2]; 336331769Shselasky struct timeval boottime; 337331769Shselasky size_t bt_size; 338331769Shselasky 339331769Shselasky /* get the cp_time array */ 340331769Shselasky (void) getkval(cp_time_offset, (int *)cp_time, sizeof(cp_time), 341331769Shselasky nlst[X_CP_TIME].n_name); 342331769Shselasky (void) getkval(avenrun_offset, (int *)avenrun, sizeof(avenrun), 343331769Shselasky nlst[X_AVENRUN].n_name); 344331769Shselasky 345331769Shselasky (void) getkval(lastpid_offset, (int *)(&lastpid), sizeof(lastpid), 346331769Shselasky "!"); 347331769Shselasky 348331769Shselasky /* convert load averages to doubles */ 349331769Shselasky { 350331769Shselasky register int i; 351331769Shselasky register double *infoloadp; 352331769Shselasky load_avg *avenrunp; 353331769Shselasky 354331769Shselasky#ifdef notyet 355331769Shselasky struct loadavg sysload; 356331769Shselasky int size; 357331769Shselasky getkerninfo(KINFO_LOADAVG, &sysload, &size, 0); 358331769Shselasky#endif 359331769Shselasky 360331769Shselasky infoloadp = si->load_avg; 361331769Shselasky avenrunp = avenrun; 362331769Shselasky for (i = 0; i < 3; i++) 363331769Shselasky { 364331769Shselasky#ifdef notyet 365331769Shselasky *infoloadp++ = ((double) sysload.ldavg[i]) / sysload.fscale; 366331769Shselasky#endif 367331769Shselasky *infoloadp++ = loaddouble(*avenrunp++); 368331769Shselasky } 369331769Shselasky } 370331769Shselasky 371331769Shselasky /* convert cp_time counts to percentages */ 372331769Shselasky total = percentages(CPUSTATES, cpu_states, cp_time, cp_old, cp_diff); 373331769Shselasky 374331769Shselasky /* sum memory & swap statistics */ 375331769Shselasky { 376331769Shselasky struct vmmeter sum; 377331769Shselasky static unsigned int swap_delay = 0; 378331769Shselasky static int swapavail = 0; 379331769Shselasky static int swapfree = 0; 380331769Shselasky static int bufspace = 0; 381331769Shselasky 382331769Shselasky (void) getkval(cnt_offset, (int *)(&sum), sizeof(sum), 383331769Shselasky "_cnt"); 384331769Shselasky (void) getkval(bufspace_offset, (int *)(&bufspace), sizeof(bufspace), 385337098Shselasky "_bufspace"); 386337098Shselasky 387337098Shselasky /* convert memory stats to Kbytes */ 388337098Shselasky memory_stats[0] = pagetok(sum.v_active_count); 389337098Shselasky memory_stats[1] = pagetok(sum.v_inactive_count); 390337098Shselasky memory_stats[2] = pagetok(sum.v_wire_count); 391337098Shselasky memory_stats[3] = pagetok(sum.v_cache_count); 392337098Shselasky memory_stats[4] = bufspace / 1024; 393337098Shselasky memory_stats[5] = pagetok(sum.v_free_count); 394337098Shselasky memory_stats[6] = -1; 395337098Shselasky 396337098Shselasky /* first interval */ 397337098Shselasky if (swappgsin < 0) { 398337098Shselasky swap_stats[4] = 0; 399337098Shselasky swap_stats[5] = 0; 400337098Shselasky } 401337098Shselasky 402337098Shselasky /* compute differences between old and new swap statistic */ 403337098Shselasky else { 404337098Shselasky swap_stats[4] = pagetok(((sum.v_swappgsin - swappgsin))); 405337098Shselasky swap_stats[5] = pagetok(((sum.v_swappgsout - swappgsout))); 406322810Shselasky } 407322810Shselasky 408331769Shselasky swappgsin = sum.v_swappgsin; 409331769Shselasky swappgsout = sum.v_swappgsout; 410331769Shselasky 411322810Shselasky /* call CPU heavy swapmode() only for changes */ 412322810Shselasky if (swap_stats[4] > 0 || swap_stats[5] > 0 || swap_delay == 0) { 413322810Shselasky swap_stats[3] = swapmode(&swapavail, &swapfree); 414322810Shselasky swap_stats[0] = swapavail; 415322810Shselasky swap_stats[1] = swapavail - swapfree; 416322810Shselasky swap_stats[2] = swapfree; 417322810Shselasky } 418322810Shselasky swap_delay = 1; 419322810Shselasky swap_stats[6] = -1; 420322810Shselasky } 421322810Shselasky 422322810Shselasky /* set arrays and strings */ 423322810Shselasky si->cpustates = cpu_states; 424322810Shselasky si->memory = memory_stats; 425322810Shselasky si->swap = swap_stats; 426322810Shselasky 427322810Shselasky 428322810Shselasky if(lastpid > 0) { 429322810Shselasky si->last_pid = lastpid; 430322810Shselasky } else { 431331769Shselasky si->last_pid = -1; 432331769Shselasky } 433331769Shselasky 434331769Shselasky /* 435331769Shselasky * Print how long system has been up. 436331769Shselasky * (Found by looking getting "boottime" from the kernel) 437331769Shselasky */ 438331769Shselasky mib[0] = CTL_KERN; 439331769Shselasky mib[1] = KERN_BOOTTIME; 440331769Shselasky bt_size = sizeof(boottime); 441331769Shselasky if (sysctl(mib, 2, &boottime, &bt_size, NULL, 0) != -1 && 442331769Shselasky boottime.tv_sec != 0) { 443331769Shselasky si->boottime = boottime; 444331769Shselasky } else { 445331769Shselasky si->boottime.tv_sec = -1; 446331769Shselasky } 447331769Shselasky} 448331769Shselasky 449331769Shselaskystatic struct handle handle; 450331769Shselasky 451331769Shselaskycaddr_t get_process_info(si, sel, compare) 452331769Shselasky 453322810Shselaskystruct system_info *si; 454322810Shselaskystruct process_select *sel; 455322810Shselaskyint (*compare)(); 456322810Shselasky 457322810Shselasky{ 458322810Shselasky register int i; 459322810Shselasky register int total_procs; 460322810Shselasky register int active_procs; 461322810Shselasky register struct kinfo_proc **prefp; 462322810Shselasky register struct kinfo_proc *pp; 463331769Shselasky 464322810Shselasky /* these are copied out of sel for speed */ 465322810Shselasky int show_idle; 466322810Shselasky int show_self; 467322810Shselasky int show_system; 468331769Shselasky int show_uid; 469322810Shselasky int show_command; 470322810Shselasky 471322810Shselasky 472331769Shselasky pbase = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nproc); 473322810Shselasky if (nproc > onproc) 474322810Shselasky pref = (struct kinfo_proc **) realloc(pref, sizeof(struct kinfo_proc *) 475322810Shselasky * (onproc = nproc)); 476322810Shselasky if (pref == NULL || pbase == NULL) { 477331769Shselasky (void) fprintf(stderr, "top: Out of memory.\n"); 478331769Shselasky quit(23); 479331769Shselasky } 480331769Shselasky /* get a pointer to the states summary array */ 481331769Shselasky si->procstates = process_states; 482331769Shselasky 483322810Shselasky /* set up flags which define what we are going to select */ 484322810Shselasky show_idle = sel->idle; 485322810Shselasky show_self = sel->self; 486322810Shselasky show_system = sel->system; 487322810Shselasky show_uid = sel->uid != -1; 488322810Shselasky show_command = sel->command != NULL; 489322810Shselasky 490322810Shselasky /* count up process states and get pointers to interesting procs */ 491322810Shselasky total_procs = 0; 492322810Shselasky active_procs = 0; 493331769Shselasky memset((char *)process_states, 0, sizeof(process_states)); 494322810Shselasky prefp = pref; 495322810Shselasky for (pp = pbase, i = 0; i < nproc; pp++, i++) 496322810Shselasky { 497322810Shselasky /* 498322810Shselasky * Place pointers to each valid proc structure in pref[]. 499322810Shselasky * Process slots that are actually in use have a non-zero 500322810Shselasky * status field. Processes with P_SYSTEM set are system 501322810Shselasky * processes---these get ignored unless show_sysprocs is set. 502322810Shselasky */ 503322810Shselasky if (PP(pp, p_stat) != 0 && 504322810Shselasky (show_self != PP(pp, p_pid)) && 505322810Shselasky (show_system || ((PP(pp, p_flag) & P_SYSTEM) == 0))) 506322810Shselasky { 507322810Shselasky total_procs++; 508322810Shselasky process_states[(unsigned char) PP(pp, p_stat)]++; 509322810Shselasky if ((PP(pp, p_stat) != SZOMB) && 510322810Shselasky (show_idle || (PP(pp, p_pctcpu) != 0) || 511322810Shselasky (PP(pp, p_stat) == SRUN)) && 512322810Shselasky (!show_uid || EP(pp, e_pcred.p_ruid) == (uid_t)sel->uid)) 513331769Shselasky { 514322810Shselasky *prefp++ = pp; 515322810Shselasky active_procs++; 516322810Shselasky } 517322810Shselasky } 518322810Shselasky } 519322810Shselasky 520322810Shselasky /* if requested, sort the "interesting" processes */ 521322810Shselasky if (compare != NULL) 522322810Shselasky { 523322810Shselasky qsort((char *)pref, active_procs, sizeof(struct kinfo_proc *), compare); 524322810Shselasky } 525322810Shselasky 526322810Shselasky /* remember active and total counts */ 527322810Shselasky si->p_total = total_procs; 528322810Shselasky si->p_active = pref_len = active_procs; 529322810Shselasky 530322810Shselasky /* pass back a handle */ 531322810Shselasky handle.next_proc = pref; 532331769Shselasky handle.remaining = active_procs; 533322810Shselasky return((caddr_t)&handle); 534322810Shselasky} 535322810Shselasky 536331769Shselaskychar fmt[128]; /* static area where result is built */ 537322810Shselasky 538322810Shselaskychar *format_next_process(handle, get_userid) 539322810Shselasky 540331769Shselaskycaddr_t handle; 541322810Shselaskychar *(*get_userid)(); 542322810Shselasky 543322810Shselasky{ 544322810Shselasky register struct kinfo_proc *pp; 545331769Shselasky register long cputime; 546331769Shselasky register double pct; 547331769Shselasky struct handle *hp; 548331769Shselasky char status[16]; 549331769Shselasky int state; 550322810Shselasky 551322810Shselasky /* find and remember the next proc structure */ 552322810Shselasky hp = (struct handle *)handle; 553331769Shselasky pp = *(hp->next_proc++); 554322810Shselasky hp->remaining--; 555322810Shselasky 556322810Shselasky /* get the process's command name */ 557322810Shselasky if ((PP(pp, p_flag) & P_INMEM) == 0) { 558322810Shselasky /* 559322810Shselasky * Print swapped processes as <pname> 560322810Shselasky */ 561331769Shselasky char *comm = PP(pp, p_comm); 562322810Shselasky#define COMSIZ sizeof(PP(pp, p_comm)) 563322810Shselasky char buf[COMSIZ]; 564322810Shselasky (void) strncpy(buf, comm, COMSIZ); 565322810Shselasky comm[0] = '<'; 566322810Shselasky (void) strncpy(&comm[1], buf, COMSIZ - 2); 567322810Shselasky comm[COMSIZ - 2] = '\0'; 568322810Shselasky (void) strncat(comm, ">", COMSIZ - 1); 569322810Shselasky comm[COMSIZ - 1] = '\0'; 570322810Shselasky } 571331769Shselasky 572331769Shselasky /* 573322810Shselasky * Convert the process's runtime from microseconds to seconds. This 574322810Shselasky * time includes the interrupt time although that is not wanted here. 575322810Shselasky * ps(1) is similarly sloppy. 576331769Shselasky */ 577322810Shselasky cputime = (PP(pp, p_runtime) + 500000) / 1000000; 578322810Shselasky 579331769Shselasky /* calculate the base for cpu percentages */ 580331769Shselasky pct = pctdouble(PP(pp, p_pctcpu)); 581331769Shselasky 582331769Shselasky /* generate "STATE" field */ 583322810Shselasky switch (state = PP(pp, p_stat)) { 584331769Shselasky case SRUN: 585331769Shselasky if (smpmode && PP(pp, p_oncpu) != 0xff) 586331769Shselasky sprintf(status, "CPU%d", PP(pp, p_oncpu)); 587331769Shselasky else 588331769Shselasky strcpy(status, "RUN"); 589322810Shselasky break; 590331769Shselasky case SMTX: 591331769Shselasky if (PP(pp, p_mtxname) != NULL) { 592331769Shselasky sprintf(status, "*%.6s", EP(pp, e_mtxname)); 593322810Shselasky break; 594322810Shselasky } 595322810Shselasky /* fall through */ 596322810Shselasky case SSLEEP: 597322810Shselasky if (PP(pp, p_wmesg) != NULL) { 598322810Shselasky sprintf(status, "%.6s", EP(pp, e_wmesg)); 599322810Shselasky break; 600322810Shselasky } 601322810Shselasky /* fall through */ 602322810Shselasky default: 603322810Shselasky 604322810Shselasky if (state >= 0 && 605322810Shselasky state < sizeof(state_abbrev) / sizeof(*state_abbrev)) 606322810Shselasky sprintf(status, "%.6s", state_abbrev[(unsigned char) state]); 607322810Shselasky else 608331769Shselasky sprintf(status, "?%5d", state); 609322810Shselasky break; 610322810Shselasky } 611322810Shselasky 612322810Shselasky /* format this entry */ 613322810Shselasky sprintf(fmt, 614322810Shselasky smpmode ? smp_Proc_format : up_Proc_format, 615322810Shselasky PP(pp, p_pid), 616322810Shselasky namelength, namelength, 617322810Shselasky (*get_userid)(EP(pp, e_pcred.p_ruid)), 618322810Shselasky PP(pp, p_priority) - PZERO, 619322810Shselasky 620322810Shselasky /* 621322810Shselasky * normal time -> nice value -20 - +20 622322810Shselasky * real time 0 - 31 -> nice value -52 - -21 623331769Shselasky * idle time 0 - 31 -> nice value +21 - +52 624331769Shselasky */ 625331769Shselasky (PP(pp, p_rtprio.type) == RTP_PRIO_NORMAL ? 626331769Shselasky PP(pp, p_nice) - NZERO : 627331769Shselasky (RTP_PRIO_IS_REALTIME(PP(pp, p_rtprio.type)) ? 628331769Shselasky (PRIO_MIN - 1 - RTP_PRIO_MAX + PP(pp, p_rtprio.prio)) : 629331769Shselasky (PRIO_MAX + 1 + PP(pp, p_rtprio.prio)))), 630322810Shselasky format_k2(PROCSIZE(pp)), 631331769Shselasky format_k2(pagetok(VP(pp, vm_rssize))), 632331769Shselasky status, 633331769Shselasky smpmode ? PP(pp, p_lastcpu) : 0, 634331769Shselasky format_time(cputime), 635331769Shselasky 100.0 * weighted_cpu(pct, pp), 636331769Shselasky 100.0 * pct, 637331769Shselasky cmdlength, 638331769Shselasky printable(PP(pp, p_comm))); 639331769Shselasky 640322810Shselasky /* return the result */ 641322810Shselasky return(fmt); 642322810Shselasky} 643331769Shselasky 644331769Shselasky 645331769Shselasky/* 646331769Shselasky * check_nlist(nlst) - checks the nlist to see if any symbols were not 647331769Shselasky * found. For every symbol that was not found, a one-line 648331769Shselasky * message is printed to stderr. The routine returns the 649331769Shselasky * number of symbols NOT found. 650331769Shselasky */ 651331769Shselasky 652331769Shselaskystatic int check_nlist(nlst) 653331769Shselasky 654331769Shselaskyregister struct nlist *nlst; 655331769Shselasky 656331769Shselasky{ 657331769Shselasky register int i; 658331769Shselasky 659331769Shselasky /* check to see if we got ALL the symbols we requested */ 660331769Shselasky /* this will write one line to stderr for every symbol not found */ 661331769Shselasky 662331769Shselasky i = 0; 663331769Shselasky while (nlst->n_name != NULL) 664331769Shselasky { 665331769Shselasky if (nlst->n_type == 0) 666331769Shselasky { 667331769Shselasky /* this one wasn't found */ 668331769Shselasky (void) fprintf(stderr, "kernel: no symbol named `%s'\n", 669331769Shselasky nlst->n_name); 670331769Shselasky i = 1; 671331769Shselasky } 672331769Shselasky nlst++; 673331769Shselasky } 674331769Shselasky 675331769Shselasky return(i); 676331769Shselasky} 677331769Shselasky 678331769Shselasky 679331769Shselasky/* 680331769Shselasky * getkval(offset, ptr, size, refstr) - get a value out of the kernel. 681331769Shselasky * "offset" is the byte offset into the kernel for the desired value, 682331769Shselasky * "ptr" points to a buffer into which the value is retrieved, 683331769Shselasky * "size" is the size of the buffer (and the object to retrieve), 684331769Shselasky * "refstr" is a reference string used when printing error meessages, 685331769Shselasky * if "refstr" starts with a '!', then a failure on read will not 686331769Shselasky * be fatal (this may seem like a silly way to do things, but I 687331769Shselasky * really didn't want the overhead of another argument). 688331769Shselasky * 689331769Shselasky */ 690322810Shselasky 691322810Shselaskystatic int getkval(offset, ptr, size, refstr) 692322810Shselasky 693322810Shselaskyunsigned long offset; 694331769Shselaskyint *ptr; 695322810Shselaskyint size; 696322810Shselaskychar *refstr; 697322810Shselasky 698322810Shselasky{ 699331769Shselasky if (kvm_read(kd, offset, (char *) ptr, size) != size) 700331769Shselasky { 701331769Shselasky if (*refstr == '!') 702322810Shselasky { 703331769Shselasky return(0); 704322810Shselasky } 705322810Shselasky else 706322810Shselasky { 707322810Shselasky fprintf(stderr, "top: kvm_read for %s: %s\n", 708322810Shselasky refstr, strerror(errno)); 709322810Shselasky quit(23); 710322810Shselasky } 711322810Shselasky } 712322810Shselasky return(1); 713322810Shselasky} 714322810Shselasky 715331769Shselasky/* comparison routines for qsort */ 716331769Shselasky 717322810Shselasky/* 718331769Shselasky * proc_compare - comparison function for "qsort" 719322810Shselasky * Compares the resource consumption of two processes using five 720322810Shselasky * distinct keys. The keys (in descending order of importance) are: 721322810Shselasky * percent cpu, cpu ticks, state, resident set size, total virtual 722322810Shselasky * memory usage. The process states are ordered as follows (from least 723322810Shselasky * to most important): WAIT, zombie, sleep, stop, start, run. The 724331769Shselasky * array declaration below maps a process state index into a number 725331769Shselasky * that reflects this ordering. 726322810Shselasky */ 727331769Shselasky 728331769Shselaskystatic unsigned char sorted_state[] = 729331769Shselasky{ 730331769Shselasky 0, /* not used */ 731331769Shselasky 3, /* sleep */ 732331769Shselasky 1, /* ABANDONED (WAIT) */ 733331769Shselasky 6, /* run */ 734331769Shselasky 5, /* start */ 735331769Shselasky 2, /* zombie */ 736331769Shselasky 4 /* stop */ 737331769Shselasky}; 738331769Shselasky 739331769Shselasky 740331769Shselasky#define ORDERKEY_PCTCPU \ 741331769Shselasky if (lresult = (long) PP(p2, p_pctcpu) - (long) PP(p1, p_pctcpu), \ 742331769Shselasky (result = lresult > 0 ? 1 : lresult < 0 ? -1 : 0) == 0) 743331769Shselasky 744331769Shselasky#define ORDERKEY_CPTICKS \ 745331769Shselasky if ((result = PP(p2, p_runtime) > PP(p1, p_runtime) ? 1 : \ 746331769Shselasky PP(p2, p_runtime) < PP(p1, p_runtime) ? -1 : 0) == 0) 747331769Shselasky 748331769Shselasky#define ORDERKEY_STATE \ 749331769Shselasky if ((result = sorted_state[(unsigned char) PP(p2, p_stat)] - \ 750331769Shselasky sorted_state[(unsigned char) PP(p1, p_stat)]) == 0) 751331769Shselasky 752331769Shselasky#define ORDERKEY_PRIO \ 753331769Shselasky if ((result = PP(p2, p_priority) - PP(p1, p_priority)) == 0) 754331769Shselasky 755331769Shselasky#define ORDERKEY_RSSIZE \ 756331769Shselasky if ((result = VP(p2, vm_rssize) - VP(p1, vm_rssize)) == 0) 757322810Shselasky 758322810Shselasky#define ORDERKEY_MEM \ 759322810Shselasky if ( (result = PROCSIZE(p2) - PROCSIZE(p1)) == 0 ) 760322810Shselasky 761322810Shselasky/* compare_cpu - the comparison function for sorting by cpu percentage */ 762322810Shselasky 763322810Shselaskyint 764322810Shselasky#ifdef ORDER 765322810Shselaskycompare_cpu(pp1, pp2) 766322810Shselasky#else 767322810Shselaskyproc_compare(pp1, pp2) 768322810Shselasky#endif 769322810Shselasky 770322810Shselaskystruct proc **pp1; 771322810Shselaskystruct proc **pp2; 772322810Shselasky 773322810Shselasky{ 774322810Shselasky register struct kinfo_proc *p1; 775322810Shselasky register struct kinfo_proc *p2; 776322810Shselasky register int result; 777331769Shselasky register pctcpu lresult; 778331769Shselasky 779322810Shselasky /* remove one level of indirection */ 780322810Shselasky p1 = *(struct kinfo_proc **) pp1; 781322810Shselasky p2 = *(struct kinfo_proc **) pp2; 782322810Shselasky 783322810Shselasky ORDERKEY_PCTCPU 784322810Shselasky ORDERKEY_CPTICKS 785322810Shselasky ORDERKEY_STATE 786322810Shselasky ORDERKEY_PRIO 787322810Shselasky ORDERKEY_RSSIZE 788322810Shselasky ORDERKEY_MEM 789322810Shselasky ; 790322810Shselasky 791322810Shselasky return(result); 792322810Shselasky} 793322810Shselasky 794322810Shselasky#ifdef ORDER 795322810Shselasky/* compare routines */ 796322810Shselaskyint compare_size(), compare_res(), compare_time(), compare_prio(); 797322810Shselasky 798322810Shselaskyint (*proc_compares[])() = { 799322810Shselasky compare_cpu, 800322810Shselasky compare_size, 801322810Shselasky compare_res, 802322810Shselasky compare_time, 803322810Shselasky compare_prio, 804322810Shselasky NULL 805322810Shselasky}; 806322810Shselasky 807322810Shselasky/* compare_size - the comparison function for sorting by total memory usage */ 808322810Shselasky 809322810Shselaskyint 810322810Shselaskycompare_size(pp1, pp2) 811322810Shselasky 812322810Shselaskystruct proc **pp1; 813322810Shselaskystruct proc **pp2; 814322810Shselasky 815322810Shselasky{ 816322810Shselasky register struct kinfo_proc *p1; 817322810Shselasky register struct kinfo_proc *p2; 818322810Shselasky register int result; 819322810Shselasky register pctcpu lresult; 820322810Shselasky 821322810Shselasky /* remove one level of indirection */ 822322810Shselasky p1 = *(struct kinfo_proc **) pp1; 823322810Shselasky p2 = *(struct kinfo_proc **) pp2; 824322810Shselasky 825322810Shselasky ORDERKEY_MEM 826322810Shselasky ORDERKEY_RSSIZE 827322810Shselasky ORDERKEY_PCTCPU 828322810Shselasky ORDERKEY_CPTICKS 829322810Shselasky ORDERKEY_STATE 830322810Shselasky ORDERKEY_PRIO 831322810Shselasky ; 832322810Shselasky 833322810Shselasky return(result); 834322810Shselasky} 835322810Shselasky 836322810Shselasky/* compare_res - the comparison function for sorting by resident set size */ 837322810Shselasky 838322810Shselaskyint 839322810Shselaskycompare_res(pp1, pp2) 840322810Shselasky 841322810Shselaskystruct proc **pp1; 842331769Shselaskystruct proc **pp2; 843331769Shselasky 844322810Shselasky{ 845322810Shselasky register struct kinfo_proc *p1; 846322810Shselasky register struct kinfo_proc *p2; 847322810Shselasky register int result; 848331769Shselasky register pctcpu lresult; 849322810Shselasky 850322810Shselasky /* remove one level of indirection */ 851322810Shselasky p1 = *(struct kinfo_proc **) pp1; 852322810Shselasky p2 = *(struct kinfo_proc **) pp2; 853322810Shselasky 854322810Shselasky ORDERKEY_RSSIZE 855331769Shselasky ORDERKEY_MEM 856322810Shselasky ORDERKEY_PCTCPU 857322810Shselasky ORDERKEY_CPTICKS 858322810Shselasky ORDERKEY_STATE 859322810Shselasky ORDERKEY_PRIO 860322810Shselasky ; 861322810Shselasky 862322810Shselasky return(result); 863322810Shselasky} 864322810Shselasky 865331769Shselasky/* compare_time - the comparison function for sorting by total cpu time */ 866322810Shselasky 867322810Shselaskyint 868322810Shselaskycompare_time(pp1, pp2) 869322810Shselasky 870322810Shselaskystruct proc **pp1; 871322810Shselaskystruct proc **pp2; 872322810Shselasky 873322810Shselasky{ 874322810Shselasky register struct kinfo_proc *p1; 875322810Shselasky register struct kinfo_proc *p2; 876322810Shselasky register int result; 877322810Shselasky register pctcpu lresult; 878322810Shselasky 879322810Shselasky /* remove one level of indirection */ 880322810Shselasky p1 = *(struct kinfo_proc **) pp1; 881322810Shselasky p2 = *(struct kinfo_proc **) pp2; 882322810Shselasky 883331769Shselasky ORDERKEY_CPTICKS 884322810Shselasky ORDERKEY_PCTCPU 885331769Shselasky ORDERKEY_STATE 886322810Shselasky ORDERKEY_PRIO 887331769Shselasky ORDERKEY_RSSIZE 888322810Shselasky ORDERKEY_MEM 889331769Shselasky ; 890331769Shselasky 891322810Shselasky return(result); 892322810Shselasky } 893322810Shselasky 894322810Shselasky/* compare_prio - the comparison function for sorting by cpu percentage */ 895322810Shselasky 896322810Shselaskyint 897322810Shselaskycompare_prio(pp1, pp2) 898322810Shselasky 899322810Shselaskystruct proc **pp1; 900322810Shselaskystruct proc **pp2; 901322810Shselasky 902322810Shselasky{ 903322810Shselasky register struct kinfo_proc *p1; 904322810Shselasky register struct kinfo_proc *p2; 905322810Shselasky register int result; 906322810Shselasky register pctcpu lresult; 907322810Shselasky 908322810Shselasky /* remove one level of indirection */ 909322810Shselasky p1 = *(struct kinfo_proc **) pp1; 910322810Shselasky p2 = *(struct kinfo_proc **) pp2; 911322810Shselasky 912322810Shselasky ORDERKEY_PRIO 913322810Shselasky ORDERKEY_CPTICKS 914322810Shselasky ORDERKEY_PCTCPU 915322810Shselasky ORDERKEY_STATE 916322810Shselasky ORDERKEY_RSSIZE 917322810Shselasky ORDERKEY_MEM 918322810Shselasky ; 919322810Shselasky 920322810Shselasky return(result); 921322810Shselasky} 922322810Shselasky#endif 923322810Shselasky 924322810Shselasky/* 925322810Shselasky * proc_owner(pid) - returns the uid that owns process "pid", or -1 if 926322810Shselasky * the process does not exist. 927322810Shselasky * It is EXTREMLY IMPORTANT that this function work correctly. 928322810Shselasky * If top runs setuid root (as in SVR4), then this function 929322810Shselasky * is the only thing that stands in the way of a serious 930322810Shselasky * security problem. It validates requests for the "kill" 931322810Shselasky * and "renice" commands. 932322810Shselasky */ 933331769Shselasky 934322810Shselaskyint proc_owner(pid) 935322810Shselasky 936331769Shselaskyint pid; 937322810Shselasky 938322810Shselasky{ 939322810Shselasky register int cnt; 940322810Shselasky register struct kinfo_proc **prefp; 941322810Shselasky register struct kinfo_proc *pp; 942322810Shselasky 943322810Shselasky prefp = pref; 944322810Shselasky cnt = pref_len; 945322810Shselasky while (--cnt >= 0) 946322810Shselasky { 947322810Shselasky pp = *prefp++; 948322810Shselasky if (PP(pp, p_pid) == (pid_t)pid) 949322810Shselasky { 950322810Shselasky return((int)EP(pp, e_pcred.p_ruid)); 951322810Shselasky } 952322810Shselasky } 953322810Shselasky return(-1); 954331769Shselasky} 955322810Shselasky 956322810Shselasky 957322810Shselasky/* 958322810Shselasky * swapmode is based on a program called swapinfo written 959322810Shselasky * by Kevin Lahey <kml@rokkaku.atl.ga.us>. 960322810Shselasky */ 961322810Shselasky 962331769Shselasky#define SVAR(var) __STRING(var) /* to force expansion */ 963322810Shselasky#define KGET(idx, var) \ 964322810Shselasky KGET1(idx, &var, sizeof(var), SVAR(var)) 965322810Shselasky#define KGET1(idx, p, s, msg) \ 966322810Shselasky KGET2(nlst[idx].n_value, p, s, msg) 967322810Shselasky#define KGET2(addr, p, s, msg) \ 968322810Shselasky if (kvm_read(kd, (u_long)(addr), p, s) != s) { \ 969322810Shselasky warnx("cannot read %s: %s", msg, kvm_geterr(kd)); \ 970322810Shselasky return (0); \ 971322810Shselasky } 972322810Shselasky#define KGETRET(addr, p, s, msg) \ 973331769Shselasky if (kvm_read(kd, (u_long)(addr), p, s) != s) { \ 974322810Shselasky warnx("cannot read %s: %s", msg, kvm_geterr(kd)); \ 975322810Shselasky return (0); \ 976322810Shselasky } 977331769Shselasky 978322810Shselasky 979322810Shselaskyint 980322810Shselaskyswapmode(retavail, retfree) 981322810Shselasky int *retavail; 982322810Shselasky int *retfree; 983322810Shselasky{ 984322810Shselasky int n; 985322810Shselasky int pagesize = getpagesize(); 986322810Shselasky struct kvm_swap swapary[1]; 987322810Shselasky 988322810Shselasky *retavail = 0; 989322810Shselasky *retfree = 0; 990322810Shselasky 991322810Shselasky#define CONVERT(v) ((quad_t)(v) * pagesize / 1024) 992322810Shselasky 993322810Shselasky n = kvm_getswapinfo(kd, swapary, 1, 0); 994322810Shselasky if (n < 0 || swapary[0].ksw_total == 0) 995322810Shselasky return(0); 996322810Shselasky 997322810Shselasky *retavail = CONVERT(swapary[0].ksw_total); 998322810Shselasky *retfree = CONVERT(swapary[0].ksw_total - swapary[0].ksw_used); 999322810Shselasky 1000322810Shselasky n = (int)((double)swapary[0].ksw_used * 100.0 / 1001322810Shselasky (double)swapary[0].ksw_total); 1002331769Shselasky return(n); 1003322810Shselasky} 1004322810Shselasky 1005322810Shselasky