Here,s my alternate one, it fixes a problem with cpustates and
removes the WCPU field in favor of showing what a sleeping process
is blocked on.

# This is a shell archive.  Save it in a file, remove anything before
# this line, and then unpack it by entering "sh file".  Note, it may
# create directories; files and directories will be owned by you and
# have default permissions.
#
# This archive contains:
#
#	m_netbsd.c
#	m_netbsd.desc
#	m_netbsd.man
#
echo x - m_netbsd.c
sed 's/^X//' >m_netbsd.c << 'END-of-m_netbsd.c'
X/*
X * top - a top users display for Unix
X *
X * SYNOPSIS:  For a NetBSD system
X *
X * DESCRIPTION:
X * This is the machine-dependent module for NetBSD
X * Tested only on:
X *	i386
X *
X * LIBS: -lkvm
X *
X * AUTHOR:  Thorsten Lockert <tholo@sigmasoft.com>
X *          Adapted from BSD4.4 by Christos Zoulas <christos@ee.cornell.edu>
X */
X
X#include <sys/types.h>
X#include <sys/signal.h>
X#include <sys/param.h>
X
X#include "os.h"
X#include <stdio.h>
X#include <stdlib.h>
X#include <nlist.h>
X#include <math.h>
X#include <unistd.h>
X#include <kvm.h>
X#include <sys/errno.h>
X#include <sys/sysctl.h>
X#include <sys/dir.h>
X#include <sys/dkstat.h>
X#include <sys/file.h>
X#include <sys/time.h>
X#include <sys/resource.h>
X
X
X#define DOSWAP
X
Xstatic int check_nlist __P((struct nlist *));
Xstatic int getkval __P((unsigned long, int *, int, char *));
Xextern char* printable __P((char *));
X
X#include "top.h"
X#include "machine.h"
X#include "utils.h"
X
X/* get_process_info passes back a handle.  This is what it looks like: */
X
Xstruct handle
X{
X    struct kinfo_proc **next_proc;	/* points to next valid proc pointer */
X    int remaining;		/* number of pointers remaining */
X};
X
X/* declarations for load_avg */
X#include "loadavg.h"
X
X#define PP(pp, field) ((pp)->kp_proc . field)
X#define EP(pp, field) ((pp)->kp_eproc . field)
X#define VP(pp, field) ((pp)->kp_eproc.e_vm . field)
X
X/* what we consider to be process size: */
X#define PROCSIZE(pp) (VP((pp), vm_tsize) + VP((pp), vm_dsize) + VP((pp), vm_ssize))
X
X/* definitions for indices in the nlist array */
X#define X_CP_TIME	0
X#define X_HZ		1
X
Xstatic struct nlist nlst[] = {
X    { "_cp_time" },		/* 0 */
X    { "_hz" },			/* 1 */
X    { 0 }
X};
X
X/*
X *  These definitions control the format of the per-process area
X */
X
Xstatic char header[] =
X  "  PID X        PRI NICE  SIZE   RES STATE WAIT     TIME    CPU COMMAND";
X/* 0123456   -- field to fill in starts at header+6 */
X#define UNAME_START 6
X
X#define Proc_format \
X	"%5d %-8.8s %3d %4d %5s %5s %-5s %-6.6s %6s %5.2f%% %.14s"
X
X
X/* process state names for the "STATE" column of the display */
X/* the extra nulls in the string "run" are for adding a slash and
X   the processor number when needed */
X
Xchar *state_abbrev[] =
X{
X    "", "start", "run\0\0\0", "sleep", "stop", "zomb",
X};
X
X
Xstatic kvm_t *kd;
X
X/* these are retrieved from the kernel in _init */
X
Xstatic          long hz;
X
X/* these are offsets obtained via nlist and used in the get_ functions */
X
Xstatic unsigned long cp_time_offset;
X
X/* these are for calculating cpu state percentages */
Xstatic long cp_time[CPUSTATES];
Xstatic long cp_old[CPUSTATES];
Xstatic long cp_diff[CPUSTATES];
X
X/* these are for detailing the process states */
X
Xint process_states[7];
Xchar *procstatenames[] = {
X    "", " starting, ", " running, ", " idle, ", " stopped, ", " zombie, ",
X    NULL
X};
X
X/* these are for detailing the cpu states */
X
Xint cpu_states[CPUSTATES];
Xchar *cpustatenames[] = {
X    "user", "nice", "system", "interrupt", "idle", NULL
X};
X
X/* these are for detailing the memory statistics */
X
Xint memory_stats[8];
Xchar *memorynames[] = {
X    "Real: ", "K/", "K act/tot  ", "Virt: ", "K/",
X    "K act/tot  ", "Free: ", "K", NULL
X};
X
X/* these are for keeping track of the proc array */
X
Xstatic int nproc;
Xstatic int onproc = -1;
Xstatic int pref_len;
Xstatic struct kinfo_proc *pbase;
Xstatic struct kinfo_proc **pref;
X
X/* these are for getting the memory statistics */
X
Xstatic int pageshift;		/* log base 2 of the pagesize */
X
X/* define pagetok in terms of pageshift */
X
X#define pagetok(size) ((size) << pageshift)
X
Xint
Xmachine_init(statics)
X
Xstruct statics *statics;
X
X{
X    register int i = 0;
X    register int pagesize;
X
X    if ((kd = kvm_open(NULL, NULL, NULL, O_RDONLY, "kvm_open")) == NULL)
X	return -1;
X
X
X    /* get the list of symbols we want to access in the kernel */
X    (void) kvm_nlist(kd, nlst);
X    if (nlst[0].n_type == 0)
X    {
X	fprintf(stderr, "top: nlist failed\n");
X	return(-1);
X    }
X
X    /* make sure they were all found */
X    if (i > 0 && check_nlist(nlst) > 0)
X    {
X	return(-1);
X    }
X
X    /* get the symbol values out of kmem */
X    (void) getkval(nlst[X_HZ].n_value,     (int *)(&hz),	sizeof(hz),
X	    nlst[X_HZ].n_name);
X
X    /* stash away certain offsets for later use */
X    cp_time_offset = nlst[X_CP_TIME].n_value;
X
X    pbase = NULL;
X    pref = NULL;
X    onproc = -1;
X    nproc = 0;
X
X    /* get the page size with "getpagesize" and calculate pageshift from it */
X    pagesize = getpagesize();
X    pageshift = 0;
X    while (pagesize > 1)
X    {
X	pageshift++;
X	pagesize >>= 1;
X    }
X
X    /* we only need the amount of log(2)1024 for our conversion */
X    pageshift -= LOG1024;
X
X    /* fill in the statics information */
X    statics->procstate_names = procstatenames;
X    statics->cpustate_names = cpustatenames;
X    statics->memory_names = memorynames;
X
X    /* all done! */
X    return(0);
X}
X
Xchar *format_header(uname_field)
X
Xregister char *uname_field;
X
X{
X    register char *ptr;
X
X    ptr = header + UNAME_START;
X    while (*uname_field != '\0')
X    {
X	*ptr++ = *uname_field++;
X    }
X
X    return(header);
X}
X
Xvoid
Xget_system_info(si)
X
Xstruct system_info *si;
X
X{
X    long total;
X
X    /* get the cp_time array */
X    (void) getkval(cp_time_offset, (int *)cp_time, sizeof(cp_time),
X		   "_cp_time");
X
X    /* convert load averages to doubles */
X    {
X	register int i;
X	register double *infoloadp;
X	struct loadavg sysload;
X	int size = sizeof(sysload);
X	static int mib[] = { CTL_VM, VM_LOADAVG };
X
X	if (sysctl(mib, 2, &sysload, &size, NULL, 0) < 0) {
X	    (void) fprintf(stderr, "top: sysctl failed: %s\n", strerror(errno));
X	    bzero(&total, sizeof(total));
X	}
X
X	infoloadp = si->load_avg;
X	for (i = 0; i < 3; i++)
X	    *infoloadp++ = ((double) sysload.ldavg[i]) / sysload.fscale;
X    }
X
X    /* convert cp_time counts to percentages */
X    total = percentages(CPUSTATES, cpu_states, cp_time, cp_old, cp_diff);
X
X    /* sum memory statistics */
X    {
X	struct vmtotal total;
X	int size = sizeof(total);
X	static int mib[] = { CTL_VM, VM_METER };
X
X	/* get total -- systemwide main memory usage structure */
X	if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) {
X	    (void) fprintf(stderr, "top: sysctl failed: %s\n", strerror(errno));
X	    bzero(&total, sizeof(total));
X	}
X	/* convert memory stats to Kbytes */
X	memory_stats[0] = -1;
X	memory_stats[1] = pagetok(total.t_arm);
X	memory_stats[2] = pagetok(total.t_rm);
X	memory_stats[3] = -1;
X	memory_stats[4] = pagetok(total.t_avm);
X	memory_stats[5] = pagetok(total.t_vm);
X	memory_stats[6] = -1;
X	memory_stats[7] = pagetok(total.t_free);
X    }
X
X    /* set arrays and strings */
X    si->cpustates = cpu_states;
X    si->memory = memory_stats;
X    si->last_pid = -1;
X}
X
Xstatic struct handle handle;
X
Xcaddr_t get_process_info(si, sel, compare)
X
Xstruct system_info *si;
Xstruct process_select *sel;
Xint (*compare)();
X
X{
X    register int i;
X    register int total_procs;
X    register int active_procs;
X    register struct kinfo_proc **prefp;
X    register struct kinfo_proc *pp;
X
X    /* these are copied out of sel for speed */
X    int show_idle;
X    int show_system;
X    int show_uid;
X    int show_command;
X
X    
X    pbase = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nproc);
X    if (nproc > onproc)
X	pref = (struct kinfo_proc **) realloc(pref, sizeof(struct kinfo_proc *)
X		* (onproc = nproc));
X    if (pref == NULL || pbase == NULL) {
X	(void) fprintf(stderr, "top: Out of memory.\n");
X	quit(23);
X    }
X    /* get a pointer to the states summary array */
X    si->procstates = process_states;
X
X    /* set up flags which define what we are going to select */
X    show_idle = sel->idle;
X    show_system = sel->system;
X    show_uid = sel->uid != -1;
X    show_command = sel->command != NULL;
X
X    /* count up process states and get pointers to interesting procs */
X    total_procs = 0;
X    active_procs = 0;
X    memset((char *)process_states, 0, sizeof(process_states));
X    prefp = pref;
X    for (pp = pbase, i = 0; i < nproc; pp++, i++)
X    {
X	/*
X	 *  Place pointers to each valid proc structure in pref[].
X	 *  Process slots that are actually in use have a non-zero
X	 *  status field.  Processes with SSYS set are system
X	 *  processes---these get ignored unless show_sysprocs is set.
X	 */
X	if (PP(pp, p_stat) != 0 &&
X	    (show_system || ((PP(pp, p_flag) & P_SYSTEM) == 0)))
X	{
X	    total_procs++;
X	    process_states[(unsigned char) PP(pp, p_stat)]++;
X	    if ((PP(pp, p_stat) != SZOMB) &&
X		(show_idle || (PP(pp, p_pctcpu) != 0) || 
X		 (PP(pp, p_stat) == SRUN)) &&
X		(!show_uid || EP(pp, e_pcred.p_ruid) == (uid_t)sel->uid))
X	    {
X		*prefp++ = pp;
X		active_procs++;
X	    }
X	}
X    }
X
X    /* if requested, sort the "interesting" processes */
X    if (compare != NULL)
X    {
X	qsort((char *)pref, active_procs, sizeof(struct kinfo_proc *), compare);
X    }
X
X    /* remember active and total counts */
X    si->p_total = total_procs;
X    si->p_active = pref_len = active_procs;
X
X    /* pass back a handle */
X    handle.next_proc = pref;
X    handle.remaining = active_procs;
X    return((caddr_t)&handle);
X}
X
Xchar fmt[MAX_COLS];		/* static area where result is built */
X
Xchar *format_next_process(handle, get_userid)
X
Xcaddr_t handle;
Xchar *(*get_userid)();
X
X{
X    register struct kinfo_proc *pp;
X    register long cputime;
X    register double pct;
X    struct handle *hp;
X
X    /* find and remember the next proc structure */
X    hp = (struct handle *)handle;
X    pp = *(hp->next_proc++);
X    hp->remaining--;
X    
X
X    /* get the process's user struct and set cputime */
X    if ((PP(pp, p_flag) & P_INMEM) == 0) {
X	/*
X	 * Print swapped processes as <pname>
X	 */
X	char *comm = PP(pp, p_comm);
X#define COMSIZ sizeof(PP(pp, p_comm))
X	char buf[COMSIZ];
X	(void) strncpy(buf, comm, COMSIZ);
X	comm[0] = '<';
X	(void) strncpy(&comm[1], buf, COMSIZ - 2);
X	comm[COMSIZ - 2] = '\0';
X	(void) strncat(comm, ">", COMSIZ - 1);
X	comm[COMSIZ - 1] = '\0';
X    }
X
X    cputime = (PP(pp, p_uticks) + PP(pp, p_sticks) + PP(pp, p_iticks)) / hz;
X
X    /* calculate the base for cpu percentages */
X    pct = pctdouble(PP(pp, p_pctcpu));
X
X    /* format this entry */
X    sprintf(fmt,
X	    Proc_format,
X	    PP(pp, p_pid),
X	    (*get_userid)(EP(pp, e_pcred.p_ruid)),
X	    PP(pp, p_priority) - PZERO,
X	    PP(pp, p_nice) - NZERO,
X	    format_k(pagetok(PROCSIZE(pp))),
X	    format_k(pagetok(VP(pp, vm_rssize))),
X	    state_abbrev[(unsigned char) PP(pp, p_stat)],
X	    PP(pp, p_wchan) ?
X				PP(pp, p_wmesg) ? EP(pp, e_wmesg) :
X						  (char *)((int)PP(pp, p_wchan) &~ KERNBASE) :
X				"-",
X	    format_time(cputime),
X	    100.0 * pct,
X	    printable(PP(pp, p_comm)));
X
X    /* return the result */
X    return(fmt);
X}
X
X
X/*
X * check_nlist(nlst) - checks the nlist to see if any symbols were not
X *		found.  For every symbol that was not found, a one-line
X *		message is printed to stderr.  The routine returns the
X *		number of symbols NOT found.
X */
X
Xstatic int check_nlist(nlst)
X
Xregister struct nlist *nlst;
X
X{
X    register int i;
X
X    /* check to see if we got ALL the symbols we requested */
X    /* this will write one line to stderr for every symbol not found */
X
X    i = 0;
X    while (nlst->n_name != NULL)
X    {
X	if (nlst->n_type == 0)
X	{
X	    /* this one wasn't found */
X	    (void) fprintf(stderr, "kernel: no symbol named `%s'\n",
X			   nlst->n_name);
X	    i = 1;
X	}
X	nlst++;
X    }
X
X    return(i);
X}
X
X
X/*
X *  getkval(offset, ptr, size, refstr) - get a value out of the kernel.
X *	"offset" is the byte offset into the kernel for the desired value,
X *  	"ptr" points to a buffer into which the value is retrieved,
X *  	"size" is the size of the buffer (and the object to retrieve),
X *  	"refstr" is a reference string used when printing error meessages,
X *	    if "refstr" starts with a '!', then a failure on read will not
X *  	    be fatal (this may seem like a silly way to do things, but I
X *  	    really didn't want the overhead of another argument).
X *  	
X */
X
Xstatic int getkval(offset, ptr, size, refstr)
X
Xunsigned long offset;
Xint *ptr;
Xint size;
Xchar *refstr;
X
X{
X    if (kvm_read(kd, offset, (char *) ptr, size) != size)
X    {
X	if (*refstr == '!')
X	{
X	    return(0);
X	}
X	else
X	{
X	    fprintf(stderr, "top: kvm_read for %s: %s\n",
X		refstr, strerror(errno));
X	    quit(23);
X	}
X    }
X    return(1);
X}
X    
X/* comparison routine for qsort */
X
X/*
X *  proc_compare - comparison function for "qsort"
X *	Compares the resource consumption of two processes using five
X *  	distinct keys.  The keys (in descending order of importance) are:
X *  	percent cpu, cpu ticks, state, resident set size, total virtual
X *  	memory usage.  The process states are ordered as follows (from least
X *  	to most important):  zombie, sleep, stop, start, run.  The array
X *  	declaration below maps a process state index into a number that
X *  	reflects this ordering.
X */
X
Xstatic unsigned char sorted_state[] =
X{
X    0,	/* not used		*/
X    4,	/* start		*/
X    5,	/* run			*/
X    2,	/* sleep		*/
X    3,	/* stop			*/
X    1	/* zombie		*/
X};
X 
Xint
Xproc_compare(pp1, pp2)
X
Xstruct proc **pp1;
Xstruct proc **pp2;
X
X{
X    register struct kinfo_proc *p1;
X    register struct kinfo_proc *p2;
X    register int result;
X    register pctcpu lresult;
X
X    /* remove one level of indirection */
X    p1 = *(struct kinfo_proc **) pp1;
X    p2 = *(struct kinfo_proc **) pp2;
X
X    /* compare percent cpu (pctcpu) */
X    if ((lresult = PP(p2, p_pctcpu) - PP(p1, p_pctcpu)) == 0)
X    {
X	/* use cpticks to break the tie */
X	if ((result = PP(p2, p_cpticks) - PP(p1, p_cpticks)) == 0)
X	{
X	    /* use process state to break the tie */
X	    if ((result = sorted_state[(unsigned char) PP(p2, p_stat)] -
X			  sorted_state[(unsigned char) PP(p1, p_stat)])  == 0)
X	    {
X		/* use priority to break the tie */
X		if ((result = PP(p2, p_priority) - PP(p1, p_priority)) == 0)
X		{
X		    /* use resident set size (rssize) to break the tie */
X		    if ((result = VP(p2, vm_rssize) - VP(p1, vm_rssize)) == 0)
X		    {
X			/* use total memory to break the tie */
X			result = PROCSIZE(p2) - PROCSIZE(p1);
X		    }
X		}
X	    }
X	}
X    }
X    else
X    {
X	result = lresult < 0 ? -1 : 1;
X    }
X
X    return(result);
X}
X
X
X/*
X * proc_owner(pid) - returns the uid that owns process "pid", or -1 if
X *		the process does not exist.
X *		It is EXTREMLY IMPORTANT that this function work correctly.
X *		If top runs setuid root (as in SVR4), then this function
X *		is the only thing that stands in the way of a serious
X *		security problem.  It validates requests for the "kill"
X *		and "renice" commands.
X */
X
Xint proc_owner(pid)
X
Xint pid;
X
X{
X    register int cnt;
X    register struct kinfo_proc **prefp;
X    register struct kinfo_proc *pp;
X
X    prefp = pref;
X    cnt = pref_len;
X    while (--cnt >= 0)
X    {
X	pp = *prefp++;	
X	if (PP(pp, p_pid) == (pid_t)pid)
X	{
X	    return((int)EP(pp, e_pcred.p_ruid));
X	}
X    }
X    return(-1);
X}
END-of-m_netbsd.c
echo x - m_netbsd.desc
sed 's/^X//' >m_netbsd.desc << 'END-of-m_netbsd.desc'
X
Xtop - a top users display for Unix
X
XSYNOPSIS:  For a NetBSD system
X
XDESCRIPTION:
XThis is the machine-dependent module for NetBSD
XTested only on:
X	i386
X
XLIBS: -lkvm
X
XAUTHOR:  Thorsten Lockert <tholo@sigmasoft.com>
XAdapted from BSD4.4 by Christos Zoulas <christos@ee.cornell.edu>
X
END-of-m_netbsd.desc
echo x - m_netbsd.man
sed 's/^X//' >m_netbsd.man << 'END-of-m_netbsd.man'
X.SH "NetBSD NOTES"
X
XOnly tested with NetBSD/i386.  Stolen from the m_bsd44.c...
END-of-m_netbsd.man
exit

--
Thorsten Lockert  | postmaster@bbb.no   |
Postbox 435       | hostmaster@bbb.no   |  Universe, n.:
N-5001 Bergen     | tholo@bbb.no        |          The problem.
Norway            | tholo@sigmasoft.com |

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