2 * top - a top users display for Unix
4 * SYNOPSIS: For DragonFly 2.x and later
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/)
12 * This is the machine-dependent module for DragonFly 2.5.1
14 * DragonFly 2.x and above
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.
22 * $FreeBSD: src/usr.bin/top/machine.c,v 1.29.2.2 2001/07/31 20:27:05 tmm Exp $
26 #include <sys/types.h>
28 #include <sys/signal.h>
29 #include <sys/param.h>
38 #include <sys/errno.h>
39 #include <sys/sysctl.h>
41 #include <sys/vmmeter.h>
42 #include <sys/resource.h>
43 #include <sys/rtprio.h>
49 #include <osreldate.h> /* for changes in kernel structures */
51 #include <sys/kinfo.h>
59 int swapmode(int *retavail, int *retfree);
60 static int namelength;
62 static int show_fullcmd;
66 /* get_process_info passes back a handle. This is what it looks like: */
69 struct kinfo_proc **next_proc; /* points to next valid proc pointer */
70 int remaining; /* number of pointers remaining */
73 /* declarations for load_avg */
76 #define PP(pp, field) ((pp)->kp_ ## field)
77 #define LP(pp, field) ((pp)->kp_lwp.kl_ ## field)
78 #define VP(pp, field) ((pp)->kp_vm_ ## field)
80 /* what we consider to be process size: */
81 #define PROCSIZE(pp) (VP((pp), map_size) / 1024)
84 * These definitions control the format of the per-process area
87 static char smp_header[] =
88 " PID %-*.*s NICE SIZE RES STATE CPU TIME CTIME CPU COMMAND";
90 #define smp_Proc_format \
91 "%5d %-*.*s %3d%7s %6s %8.8s %2d %6s %7s %5.2f%% %.*s"
93 /* process state names for the "STATE" column of the display */
95 * the extra nulls in the string "run" are for adding a slash and the
96 * processor number when needed
99 const char *state_abbrev[] = {
100 "", "RUN\0\0\0", "STOP", "SLEEP",
106 /* values that we stash away in _init and use in later routines */
110 /* these are for calculating cpu state percentages */
112 static struct kinfo_cputime *cp_time, *cp_old;
114 /* these are for detailing the process states */
118 int process_states[MAXPSTATES];
120 char *procstatenames[] = {
121 " running, ", " idle, ", " active, ", " stopped, ", " zombie, ",
125 /* these are for detailing the cpu states */
128 char *cpustatenames[CPU_STATES + 1] = {
129 "user", "nice", "system", "interrupt", "idle", NULL
132 /* these are for detailing the memory statistics */
134 long memory_stats[7];
135 char *memorynames[] = {
136 "K Active, ", "K Inact, ", "K Wired, ", "K Cache, ", "K Buf, ", "K Free",
141 char *swapnames[] = {
143 "K Total, ", "K Used, ", "K Free, ", "% Inuse, ", "K In, ", "K Out",
148 /* these are for keeping track of the proc array */
151 static int onproc = -1;
153 static struct kinfo_proc *pbase;
154 static struct kinfo_proc **pref;
156 /* these are for getting the memory statistics */
158 static int pageshift; /* log base 2 of the pagesize */
160 /* define pagetok in terms of pageshift */
162 #define pagetok(size) ((size) << pageshift)
164 /* sorting orders. first is default */
165 char *ordernames[] = {
166 "cpu", "size", "res", "time", "pri", "thr", "pid", "ctime", "pres", NULL
169 /* compare routines */
170 int proc_compare (struct kinfo_proc **, struct kinfo_proc **);
171 int compare_size (struct kinfo_proc **, struct kinfo_proc **);
172 int compare_res (struct kinfo_proc **, struct kinfo_proc **);
173 int compare_time (struct kinfo_proc **, struct kinfo_proc **);
174 int compare_ctime (struct kinfo_proc **, struct kinfo_proc **);
175 int compare_prio(struct kinfo_proc **, struct kinfo_proc **);
176 int compare_thr (struct kinfo_proc **, struct kinfo_proc **);
177 int compare_pid (struct kinfo_proc **, struct kinfo_proc **);
178 int compare_pres(struct kinfo_proc **, struct kinfo_proc **);
180 int (*proc_compares[]) (struct kinfo_proc **,struct kinfo_proc **) = {
194 cputime_percentages(int out[CPU_STATES], struct kinfo_cputime *new,
195 struct kinfo_cputime *old)
197 struct kinfo_cputime diffs;
198 uint64_t total_change, half_total;
203 diffs.cp_user = new->cp_user - old->cp_user;
204 diffs.cp_nice = new->cp_nice - old->cp_nice;
205 diffs.cp_sys = new->cp_sys - old->cp_sys;
206 diffs.cp_intr = new->cp_intr - old->cp_intr;
207 diffs.cp_idle = new->cp_idle - old->cp_idle;
208 total_change = diffs.cp_user + diffs.cp_nice + diffs.cp_sys +
209 diffs.cp_intr + diffs.cp_idle;
210 old->cp_user = new->cp_user;
211 old->cp_nice = new->cp_nice;
212 old->cp_sys = new->cp_sys;
213 old->cp_intr = new->cp_intr;
214 old->cp_idle = new->cp_idle;
216 /* avoid divide by zero potential */
217 if (total_change == 0)
220 /* calculate percentages based on overall change, rounding up */
221 half_total = total_change >> 1;
223 out[0] = ((diffs.cp_user * 1000LL + half_total) / total_change);
224 out[1] = ((diffs.cp_nice * 1000LL + half_total) / total_change);
225 out[2] = ((diffs.cp_sys * 1000LL + half_total) / total_change);
226 out[3] = ((diffs.cp_intr * 1000LL + half_total) / total_change);
227 out[4] = ((diffs.cp_idle * 1000LL + half_total) / total_change);
231 machine_init(struct statics *statics)
236 struct timeval boottime;
239 if (kinfo_get_cpus(&n_cpus))
240 err(1, "kinfo_get_cpus failed");
243 modelen = sizeof(boottime);
244 if (sysctlbyname("kern.boottime", &boottime, &modelen, NULL, 0) == -1) {
245 /* we have no boottime to report */
246 boottime.tv_sec = -1;
249 while ((pw = getpwent()) != NULL) {
250 if ((int)strlen(pw->pw_name) > namelength)
251 namelength = strlen(pw->pw_name);
258 if ((kd = kvm_open(NULL, NULL, NULL, O_RDONLY, NULL)) == NULL)
266 * get the page size with "getpagesize" and calculate pageshift from
269 pagesize = getpagesize();
271 while (pagesize > 1) {
276 /* we only need the amount of log(2)1024 for our conversion */
277 pageshift -= LOG1024;
279 /* fill in the statics information */
280 statics->procstate_names = procstatenames;
281 statics->cpustate_names = cpustatenames;
282 statics->memory_names = memorynames;
283 statics->boottime = boottime.tv_sec;
284 statics->swap_names = swapnames;
285 statics->order_names = ordernames;
286 /* we need kvm descriptor in order to show full commands */
287 statics->flags.fullcmds = kd != NULL;
294 format_header(char *uname_field)
296 static char Header[128];
298 snprintf(Header, sizeof(Header), smp_header,
299 namelength, namelength, uname_field);
301 if (screen_width <= 79)
304 cmdlength = screen_width;
306 cmdlength = cmdlength - strlen(Header) + 6;
311 static int swappgsin = -1;
312 static int swappgsout = -1;
313 extern struct timeval timeout;
316 get_system_info(struct system_info *si)
321 if (cpu_states == NULL) {
322 cpu_states = malloc(sizeof(*cpu_states) * CPU_STATES * n_cpus);
323 if (cpu_states == NULL)
325 bzero(cpu_states, sizeof(*cpu_states) * CPU_STATES * n_cpus);
327 if (cp_time == NULL) {
328 cp_time = malloc(2 * n_cpus * sizeof(cp_time[0]));
331 cp_old = cp_time + n_cpus;
332 len = n_cpus * sizeof(cp_old[0]);
334 if (sysctlbyname("kern.cputime", cp_old, &len, NULL, 0))
335 err(1, "kern.cputime");
337 len = n_cpus * sizeof(cp_time[0]);
339 if (sysctlbyname("kern.cputime", cp_time, &len, NULL, 0))
340 err(1, "kern.cputime");
342 getloadavg(si->load_avg, 3);
346 /* convert cp_time counts to percentages */
347 for (cpu = 0; cpu < n_cpus; ++cpu) {
348 cputime_percentages(cpu_states + cpu * CPU_STATES,
349 &cp_time[cpu], &cp_old[cpu]);
352 /* sum memory & swap statistics */
356 size_t vms_size = sizeof(vms);
357 size_t vmm_size = sizeof(vmm);
358 static unsigned int swap_delay = 0;
359 static int swapavail = 0;
360 static int swapfree = 0;
361 static long bufspace = 0;
363 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0))
364 err(1, "sysctlbyname: vm.vmstats");
366 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0))
367 err(1, "sysctlbyname: vm.vmmeter");
369 if (kinfo_get_vfs_bufspace(&bufspace))
370 err(1, "kinfo_get_vfs_bufspace");
372 /* convert memory stats to Kbytes */
373 memory_stats[0] = pagetok(vms.v_active_count);
374 memory_stats[1] = pagetok(vms.v_inactive_count);
375 memory_stats[2] = pagetok(vms.v_wire_count);
376 memory_stats[3] = pagetok(vms.v_cache_count);
377 memory_stats[4] = bufspace / 1024;
378 memory_stats[5] = pagetok(vms.v_free_count);
379 memory_stats[6] = -1;
386 /* compute differences between old and new swap statistic */
388 swap_stats[4] = pagetok(((vmm.v_swappgsin - swappgsin)));
389 swap_stats[5] = pagetok(((vmm.v_swappgsout - swappgsout)));
392 swappgsin = vmm.v_swappgsin;
393 swappgsout = vmm.v_swappgsout;
395 /* call CPU heavy swapmode() only for changes */
396 if (swap_stats[4] > 0 || swap_stats[5] > 0 || swap_delay == 0) {
397 swap_stats[3] = swapmode(&swapavail, &swapfree);
398 swap_stats[0] = swapavail;
399 swap_stats[1] = swapavail - swapfree;
400 swap_stats[2] = swapfree;
406 /* set arrays and strings */
407 si->cpustates = cpu_states;
408 si->memory = memory_stats;
409 si->swap = swap_stats;
413 si->last_pid = lastpid;
420 static struct handle handle;
423 get_process_info(struct system_info *si, struct process_select *sel,
429 struct kinfo_proc **prefp;
430 struct kinfo_proc *pp;
432 /* these are copied out of sel for speed */
438 show_threads = sel->threads;
441 pbase = kvm_getprocs(kd,
442 KERN_PROC_ALL | (show_threads ? KERN_PROC_FLAG_LWP : 0), 0, &nproc);
444 pref = (struct kinfo_proc **)realloc(pref, sizeof(struct kinfo_proc *)
446 if (pref == NULL || pbase == NULL) {
447 (void)fprintf(stderr, "top: Out of memory.\n");
450 /* get a pointer to the states summary array */
451 si->procstates = process_states;
453 /* set up flags which define what we are going to select */
454 show_idle = sel->idle;
455 show_system = sel->system;
456 show_uid = sel->uid != -1;
457 show_fullcmd = sel->fullcmd;
459 /* count up process states and get pointers to interesting procs */
462 memset((char *)process_states, 0, sizeof(process_states));
464 for (pp = pbase, i = 0; i < nproc; pp++, i++) {
466 * Place pointers to each valid proc structure in pref[].
467 * Process slots that are actually in use have a non-zero
468 * status field. Processes with P_SYSTEM set are system
469 * processes---these get ignored unless show_sysprocs is set.
471 if ((show_system && (LP(pp, pid) == -1)) ||
472 (show_system || ((PP(pp, flags) & P_SYSTEM) == 0))) {
473 int pstate = LP(pp, stat);
478 if (pstate >= 0 && pstate < MAXPSTATES)
479 process_states[pstate]++;
480 if ((show_system && (LP(pp, pid) == -1)) ||
481 (show_idle || (LP(pp, pctcpu) != 0) ||
482 (pstate == LSRUN)) &&
483 (!show_uid || PP(pp, ruid) == (uid_t) sel->uid)) {
490 qsort((char *)pref, active_procs, sizeof(struct kinfo_proc *),
491 (int (*)(const void *, const void *))proc_compares[compare_index]);
493 /* remember active and total counts */
494 si->p_total = total_procs;
495 si->p_active = pref_len = active_procs;
497 /* pass back a handle */
498 handle.next_proc = pref;
499 handle.remaining = active_procs;
500 return ((caddr_t) & handle);
503 char fmt[MAX_COLS]; /* static area where result is built */
506 format_next_process(caddr_t xhandle, char *(*get_userid) (int))
508 struct kinfo_proc *pp;
518 char cputime_fmt[10], ccputime_fmt[10];
520 /* find and remember the next proc structure */
521 hp = (struct handle *)xhandle;
522 pp = *(hp->next_proc++);
525 /* get the process's command name */
527 if ((comm_full = kvm_getargv(kd, pp, 0)) == NULL) {
536 * Convert the process's runtime from microseconds to seconds. This
537 * time includes the interrupt time to be in compliance with ps output.
539 cputime = (LP(pp, uticks) + LP(pp, sticks) + LP(pp, iticks)) / 1000000;
540 ccputime = cputime + PP(pp, cru).ru_stime.tv_sec + PP(pp, cru).ru_utime.tv_sec;
541 format_time(cputime, cputime_fmt, sizeof(cputime_fmt));
542 format_time(ccputime, ccputime_fmt, sizeof(ccputime_fmt));
544 /* calculate the base for cpu percentages */
545 pct = pctdouble(LP(pp, pctcpu));
547 /* generate "STATE" field */
548 switch (state = LP(pp, stat)) {
550 if (LP(pp, tdflags) & TDF_RUNNING)
551 sprintf(status, "CPU%d", LP(pp, cpuid));
553 strcpy(status, "RUN");
556 if (LP(pp, wmesg) != NULL) {
557 sprintf(status, "%.8s", LP(pp, wmesg)); /* WMESGLEN */
564 (unsigned)state < sizeof(state_abbrev) / sizeof(*state_abbrev))
565 sprintf(status, "%.6s", state_abbrev[(unsigned char)state]);
567 sprintf(status, "?%5d", state);
571 if (PP(pp, stat) == SZOMB)
572 strcpy(status, "ZOMB");
575 * idle time 0 - 31 -> nice value +21 - +52 normal time -> nice
576 * value -20 - +20 real time 0 - 31 -> nice value -52 - -21 thread
577 * 0 - 31 -> nice value -53 -
579 switch (LP(pp, rtprio.type)) {
580 case RTP_PRIO_REALTIME:
581 xnice = PRIO_MIN - 1 - RTP_PRIO_MAX + LP(pp, rtprio.prio);
584 xnice = PRIO_MAX + 1 + LP(pp, rtprio.prio);
586 case RTP_PRIO_THREAD:
587 xnice = PRIO_MIN - 1 - RTP_PRIO_MAX - LP(pp, rtprio.prio);
590 xnice = PP(pp, nice);
594 /* format this entry */
595 snprintf(fmt, sizeof(fmt),
598 namelength, namelength,
599 get_userid(PP(pp, ruid)),
601 format_k(PROCSIZE(pp)),
602 format_k(pagetok(VP(pp, rssize))),
609 show_fullcmd ? *comm_full : comm);
611 /* return the result */
615 /* comparison routines for qsort */
618 * proc_compare - comparison function for "qsort"
619 * Compares the resource consumption of two processes using five
620 * distinct keys. The keys (in descending order of importance) are:
621 * percent cpu, cpu ticks, state, resident set size, total virtual
622 * memory usage. The process states are ordered as follows (from least
623 * to most important): WAIT, zombie, sleep, stop, start, run. The
624 * array declaration below maps a process state index into a number
625 * that reflects this ordering.
628 static unsigned char sorted_state[] =
632 1, /* ABANDONED (WAIT) */
640 #define ORDERKEY_PCTCPU \
641 if (lresult = (long) LP(p2, pctcpu) - (long) LP(p1, pctcpu), \
642 (result = lresult > 0 ? 1 : lresult < 0 ? -1 : 0) == 0)
644 #define CPTICKS(p) (LP(p, uticks) + LP(p, sticks) + LP(p, iticks))
646 #define ORDERKEY_CPTICKS \
647 if ((result = CPTICKS(p2) > CPTICKS(p1) ? 1 : \
648 CPTICKS(p2) < CPTICKS(p1) ? -1 : 0) == 0)
650 #define CTIME(p) (((LP(p, uticks) + LP(p, sticks) + LP(p, iticks))/1000000) + \
651 PP(p, cru).ru_stime.tv_sec + PP(p, cru).ru_utime.tv_sec)
653 #define ORDERKEY_CTIME \
654 if ((result = CTIME(p2) > CTIME(p1) ? 1 : \
655 CTIME(p2) < CTIME(p1) ? -1 : 0) == 0)
657 #define ORDERKEY_STATE \
658 if ((result = sorted_state[(unsigned char) PP(p2, stat)] - \
659 sorted_state[(unsigned char) PP(p1, stat)]) == 0)
661 #define ORDERKEY_PRIO \
662 if ((result = LP(p2, prio) - LP(p1, prio)) == 0)
664 #define ORDERKEY_KTHREADS \
665 if ((result = (LP(p1, pid) == 0) - (LP(p2, pid) == 0)) == 0)
667 #define ORDERKEY_KTHREADS_PRIO \
668 if ((result = LP(p2, tdprio) - LP(p1, tdprio)) == 0)
670 #define ORDERKEY_RSSIZE \
671 if ((result = VP(p2, rssize) - VP(p1, rssize)) == 0)
673 #define ORDERKEY_MEM \
674 if ( (result = PROCSIZE(p2) - PROCSIZE(p1)) == 0 )
676 #define ORDERKEY_PID \
677 if ( (result = PP(p1, pid) - PP(p2, pid)) == 0)
679 #define ORDERKEY_PRSSIZE \
680 if((result = VP(p2, prssize) - VP(p1, prssize)) == 0)
682 /* compare_cpu - the comparison function for sorting by cpu percentage */
685 proc_compare(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
687 struct kinfo_proc *p1;
688 struct kinfo_proc *p2;
692 /* remove one level of indirection */
693 p1 = *(struct kinfo_proc **) pp1;
694 p2 = *(struct kinfo_proc **) pp2;
707 /* compare_size - the comparison function for sorting by total memory usage */
710 compare_size(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
712 struct kinfo_proc *p1;
713 struct kinfo_proc *p2;
717 /* remove one level of indirection */
718 p1 = *(struct kinfo_proc **) pp1;
719 p2 = *(struct kinfo_proc **) pp2;
732 /* compare_res - the comparison function for sorting by resident set size */
735 compare_res(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
737 struct kinfo_proc *p1;
738 struct kinfo_proc *p2;
742 /* remove one level of indirection */
743 p1 = *(struct kinfo_proc **) pp1;
744 p2 = *(struct kinfo_proc **) pp2;
757 /* compare_pres - the comparison function for sorting by proportional resident set size */
760 compare_pres(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
762 struct kinfo_proc *p1;
763 struct kinfo_proc *p2;
767 /* remove one level of indirection */
768 p1 = *(struct kinfo_proc **) pp1;
769 p2 = *(struct kinfo_proc **) pp2;
783 /* compare_time - the comparison function for sorting by total cpu time */
786 compare_time(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
788 struct kinfo_proc *p1;
789 struct kinfo_proc *p2;
793 /* remove one level of indirection */
794 p1 = *(struct kinfo_proc **) pp1;
795 p2 = *(struct kinfo_proc **) pp2;
800 ORDERKEY_KTHREADS_PRIO
811 compare_ctime(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
813 struct kinfo_proc *p1;
814 struct kinfo_proc *p2;
818 /* remove one level of indirection */
819 p1 = *(struct kinfo_proc **) pp1;
820 p2 = *(struct kinfo_proc **) pp2;
825 ORDERKEY_KTHREADS_PRIO
835 /* compare_prio - the comparison function for sorting by cpu percentage */
838 compare_prio(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
840 struct kinfo_proc *p1;
841 struct kinfo_proc *p2;
845 /* remove one level of indirection */
846 p1 = *(struct kinfo_proc **) pp1;
847 p2 = *(struct kinfo_proc **) pp2;
850 ORDERKEY_KTHREADS_PRIO
863 compare_thr(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
865 struct kinfo_proc *p1;
866 struct kinfo_proc *p2;
870 /* remove one level of indirection */
871 p1 = *(struct kinfo_proc **)pp1;
872 p2 = *(struct kinfo_proc **)pp2;
875 ORDERKEY_KTHREADS_PRIO
886 /* compare_pid - the comparison function for sorting by process id */
889 compare_pid(struct kinfo_proc **pp1, struct kinfo_proc **pp2)
891 struct kinfo_proc *p1;
892 struct kinfo_proc *p2;
895 /* remove one level of indirection */
896 p1 = *(struct kinfo_proc **) pp1;
897 p2 = *(struct kinfo_proc **) pp2;
906 * proc_owner(pid) - returns the uid that owns process "pid", or -1 if
907 * the process does not exist.
908 * It is EXTREMLY IMPORTANT that this function work correctly.
909 * If top runs setuid root (as in SVR4), then this function
910 * is the only thing that stands in the way of a serious
911 * security problem. It validates requests for the "kill"
912 * and "renice" commands.
919 struct kinfo_proc **prefp;
920 struct kinfo_proc *pp;
924 while (--xcnt >= 0) {
926 if (PP(pp, pid) == (pid_t) pid) {
927 return ((int)PP(pp, ruid));
935 * swapmode is based on a program called swapinfo written
936 * by Kevin Lahey <kml@rokkaku.atl.ga.us>.
939 swapmode(int *retavail, int *retfree)
942 int pagesize = getpagesize();
943 struct kvm_swap swapary[1];
948 #define CONVERT(v) ((quad_t)(v) * pagesize / 1024)
950 n = kvm_getswapinfo(kd, swapary, 1, 0);
951 if (n < 0 || swapary[0].ksw_total == 0)
954 *retavail = CONVERT(swapary[0].ksw_total);
955 *retfree = CONVERT(swapary[0].ksw_total - swapary[0].ksw_used);
957 n = (int)((double)swapary[0].ksw_used * 100.0 /
958 (double)swapary[0].ksw_total);