Usenet 1994 January/usenetsourcesnewsgroupsinfomagicjanuary1994.iso/sources/unix/volume27/top-3.2/part07

Text File | 1993-08-08 | 38.1 KB | 1,530 lines

Newsgroups: comp.sources.unix
From: [e-mail] (William LeFebvre)
Subject: v27i007: top - a top process display, version 3.2, Part07/13
References: <[e-mail]>
Sender: [e-mail]
Approved: [e-mail]

Submitted-By: [e-mail] (William LeFebvre)
Posting-Number: Volume 27, Issue 7
Archive-Name: top-3.2/part07

#! /bin/sh
# This is a shell archive.  Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file".  To overwrite existing
# files, type "sh file -c".  You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g..  If this archive is complete, you
# will see the following message at the end:
#        "End of archive 7 (of 13)."
# Contents:  machine/m_dynix32.c machine/m_osmp41a.c
# Wrapped by phil@pex on Wed Aug  4 14:22:43 1993
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f 'machine/m_dynix32.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'machine/m_dynix32.c'\"
else
echo shar: Extracting \"'machine/m_dynix32.c'\" \(17566 characters\)
sed "s/^X//" >'machine/m_dynix32.c' <<'END_OF_FILE'
X/*
X * top - a top users display for Unix
X *
X * SYNOPSIS:  any Sequent Running Dynix 3.2.x
X *
X * DESCRIPTION:
X * This is the machine-dependent module for Sequent Dynix 3.2.0
X * This makes top work on the following systems:
X *    Dynix 3.2.0 and perhaps later versions
X *
X * CFLAGS: -DBSD
X *
X * AUTHOR:  Daniel Trinkle <[e-mail]>
X */
X
X#include <sys/types.h>
X#include <sys/signal.h>
X#include <sys/param.h>
X
X#include <stdio.h>
X#include <nlist.h>
X#include <math.h>
X#include <sys/dir.h>
X#include <sys/user.h>
X#include <sys/proc.h>
X#include <sys/dk.h>
X#include <sys/vm.h>
X#include <machine/pte.h>
X#include <machine/plocal.h>
X#include <machine/engine.h>
X#include <sys/file.h>
X
X#include "top.h"
X#include "machine.h"
X
X#ifndef uid_t
X/* some early versions of DYNIX don't have uid_t */
X#define uid_t int
X#endif
X
X#ifndef pid_t
X/* ditto pid_t */
X#define pid_t short
X#endif
X
Xstruct engine *engine;
Xstruct engine *pengine;
Xstruct plocal **pplocal;
Xint Nengine;
X
X/* get_process_info passes back a handle.  This is what it looks like: */
X
Xstruct handle
X{
X    struct proc **next_proc;    /* points to next valid proc pointer */
X    int remaining;        /* number of pointers remaining */
X};
X
X/* declarations for load_avg */
Xtypedef long load_avg;
Xtypedef long pctcpu;
X#define loaddouble(la) ((double)(la) / FSCALE)
X#define intload(i) ((int)((i) * FSCALE))
X#define pctdouble(p) ((double)(p) / FSCALE)
X
X/* define what weighted cpu is.  */
X#define weighted_cpu(pct, pp) ((pp)->p_time == 0 ? 0.0 : \
X             ((pct) / (1.0 - exp((pp)->p_time * logcpu))))
X
X/* what we consider to be process size: */
X#define PROCSIZE(pp) ((pp)->p_dsize + (pp)->p_ssize)
X
X/* definitions for indices in the nlist array */
X#define X_AVENRUN    0
X#define X_CCPU        1
X#define X_MPID        2
X#define X_NPROC        3
X#define X_PROC        4
X#define X_TOTAL        5
X#define X_ENGINE    6
X#define X_NENGINE    7
X
Xstatic struct nlist nlst[] = {
X    { "_avenrun" },        /* 0 */
X    { "_ccpu" },        /* 1 */
X    { "_mpid" },        /* 2 */
X    { "_nproc" },        /* 3 */
X    { "_proc" },        /* 4 */
X    { "_total" },        /* 5 */
X    { "_engine" },        /* 6 */
X    { "_Nengine" },        /* 7 */
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   TIME   WCPU    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%6dK %4dK %-5s%4d:%02d %5.2f%% %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    "", "sleep", "WAIT", "run", "start", "zomb", "stop", "RUN"
X};
X
X/* values that we stash away in _init and use in later routines */
X
Xstatic double logcpu;
X
X#define VMUNIX "/dynix"
X#define KMEM "/dev/kmem"
X#define MEM "/dev/mem"
X
Xstatic int kmem = -1;
Xstatic int mem = -1;
X
Xstruct vmtotal total;
X
X/* these are retrieved from the kernel in _init */
X
Xstatic unsigned long proc;
Xstatic          int  nproc;
Xstatic load_avg  ccpu;
X
X/* these are offsets obtained via nlist and used in the get_ functions */
X
Xstatic unsigned long mpid_offset;
Xstatic unsigned long avenrun_offset;
Xstatic unsigned long total_offset;
X
X/* these are for calculating cpu state percentages */
X
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[8];
Xchar *procstatenames[] = {
X    "", " sleeping, ", " ABANDONED, ", " runable, ", " starting, ",
X    " zombie, ", " stopped, ", " running, ",
X    NULL
X};
X
X/* these are for detailing the cpu states */
X
Xint cpu_states[CPUSTATES];
Xchar *cpustatenames[] = {
X    "user", "nice", "system", "idle",
X    NULL
X};
X
X/* these are for detailing the memory statistics */
X
Xint memory_stats[5];
Xchar *memorynames[] = {
X    "K (", "K) real, ", "K (", "K) virtual, ", "K free", NULL
X};
X
X/* these are for keeping track of the proc array */
X
Xstatic int bytes;
Xstatic int pref_len;
Xstatic struct proc *pbase;
Xstatic struct proc **pref;
X
X#define pagetok(size)    ((size) << (PGSHIFT - LOG1024))
X
X/* useful externals */
Xextern int errno;
Xextern char *sys_errlist[];
X
Xlong lseek();
Xlong percentages();
X
Xmachine_init(statics)
X
Xstruct statics *statics;
X
X{
X    register int i;
X
X    /* open kernel memory */
X    if ((kmem = open(KMEM, 0)) < 0)
X    {
X    perror(KMEM);
X    exit(20);
X    }
X    if ((mem = open(MEM, 0)) < 0)
X    {
X    perror(MEM);
X    exit(21);
X    }
X
X    /* get the list of symbols we want to access in the kernel */
X    if ((i = nlist(VMUNIX, nlst)) < 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_PROC].n_value,   (int *)(&proc),    sizeof(proc),
X        nlst[X_PROC].n_name);
X    (void) getkval(nlst[X_NPROC].n_value,  &nproc,        sizeof(nproc),
X        nlst[X_NPROC].n_name);
X    (void) getkval(nlst[X_CCPU].n_value,   (int *)(&ccpu),    sizeof(ccpu),
X        nlst[X_CCPU].n_name);
X    (void) getkval(nlst[X_NENGINE].n_value,  &Nengine,  sizeof(int),
X        nlst[X_NENGINE].n_name);
X    (void) getkval(nlst[X_ENGINE].n_value,  &pengine,  sizeof(struct engine *),
X        nlst[X_ENGINE].n_name);
X
X    engine = (struct engine *)calloc(Nengine, sizeof(struct engine));
X    if (engine == NULL)
X    {
X    fprintf(stderr, "Cannot allocate memory for engine structure\n");
X    exit(2);
X    }
X    (void) getkval(pengine,  &engine[0],  Nengine * sizeof(struct engine),
X        "engine array");
X    pplocal = (struct plocal **)calloc(Nengine, sizeof(struct plocal *));
X    if (pplocal == NULL)
X    {
X    fprintf(stderr, "Cannot allocate memory for plocal structures\n");
X    exit(2);
X    }
X    for (i = 0; i < Nengine; i++) {
X    pplocal[i] = (struct plocal *)&engine[i].e_local->pp_local[0][0];
X    }
X
X    /* stash away certain offsets for later use */
X    mpid_offset = nlst[X_MPID].n_value;
X    avenrun_offset = nlst[X_AVENRUN].n_value;
X    total_offset = nlst[X_TOTAL].n_value;
X
X    /* this is used in calculating WCPU -- calculate it ahead of time */
X    logcpu = log(loaddouble(ccpu));
X
X    /* allocate space for proc structure array and array of pointers */
X    bytes = nproc * sizeof(struct proc);
X    pbase = (struct proc *)malloc(bytes);
X    pref  = (struct proc **)malloc(nproc * sizeof(struct proc *));
X
X    /* Just in case ... */
X    if (pbase == (struct proc *)NULL || pref == (struct proc **)NULL)
X    {
X    fprintf(stderr, "top: can't allocate sufficient memory\n");
X    return(-1);
X    }
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
Xget_system_info(si)
X
Xstruct system_info *si;
X
X{
X    load_avg avenrun[3];
X    struct plocal plocal;
X    register int i, j;
X
X    /* get the cp_time array */
X    for (j = 0; j < CPUSTATES; j++)
X    cp_time[j] = 0L;
X    for (i = 0; i < Nengine; i++) {
X    (void) getkval(pplocal[i], &plocal, sizeof(struct plocal), "plocal array");
X    for (j = 0; j < CPUSTATES; j++)
X        cp_time[j] += (long)plocal.cnt.v_time[j];
X    }
X
X    /* get load average array */
X    (void) getkval(avenrun_offset, (int *)avenrun, sizeof(avenrun),
X           "_avenrun");
X
X    /* get mpid -- process id of last process */
X    (void) getkval(mpid_offset, &(si->last_pid), sizeof(si->last_pid),
X           "_mpid");
X
X    /* convert load averages to doubles */
X    {
X    register int i;
X    register double *infoloadp;
X    register load_avg *sysloadp;
X
X    infoloadp = si->load_avg;
X    sysloadp = avenrun;
X    for (i = 0; i < 3; i++)
X    {
X        *infoloadp++ = loaddouble(*sysloadp++);
X    }
X    }
X
X    /* convert cp_time counts to percentages */
X    (void) percentages(CPUSTATES, cpu_states, cp_time, cp_old, cp_diff);
X
X    /* get total -- systemwide main memory usage structure */
X    (void) getkval(total_offset, (int *)(&total), sizeof(total),
X           "_total");
X    /* convert memory stats to Kbytes */
X    memory_stats[0] = pagetok(total.t_rm);
X    memory_stats[1] = pagetok(total.t_arm);
X    memory_stats[2] = pagetok(total.t_vm);
X    memory_stats[3] = pagetok(total.t_avm);
X    memory_stats[4] = pagetok(total.t_free);
X
X    /* set arrays and strings */
X    si->cpustates = cpu_states;
X    si->memory = memory_stats;
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 proc **prefp;
X    register struct 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
X    /* read all the proc structures in one fell swoop */
X    (void) getkval(proc, (int *)pbase, bytes, "proc array");
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
X    /* count up process states and get pointers to interesting procs */
X    total_procs = 0;
X    active_procs = 0;
X    bzero((char *)process_states, 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->p_stat != 0 &&
X        (show_system || ((pp->p_flag & SSYS) == 0)))
X    {
X        total_procs++;
X        process_states[pp->p_stat]++;
X        if ((pp->p_stat != SZOMB) &&
X        (show_idle || (pp->p_pctcpu != 0) || (pp->p_stat == SRUN)) &&
X        (!show_uid || pp->p_uid == (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 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[128];        /* 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 proc *pp;
X    register long cputime;
X    register double pct;
X    struct user u;
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 (getu(pp, &u) == -1)
X    {
X    (void) strcpy(u.u_comm, "<swapped>");
X    cputime = 0;
X    }
X    else
X    {
X    /* set u_comm for system processes */
X    if (u.u_comm[0] == '\0')
X    {
X        if (pp->p_pid == 0)
X        {
X        (void) strcpy(u.u_comm, "Swapper");
X        }
X        else if (pp->p_pid == 2)
X        {
X        (void) strcpy(u.u_comm, "Pager");
X        }
X    }
X
X    cputime = u.u_ru.ru_utime.tv_sec + u.u_ru.ru_stime.tv_sec;
X    }
X
X    /* calculate the base for cpu percentages */
X    pct = pctdouble(pp->p_pctcpu);
X
X    /* format this entry */
X    sprintf(fmt,
X        Proc_format,
X        pp->p_pid,
X        (*get_userid)(pp->p_uid),
X        pp->p_pri - PZERO,
X        pp->p_nice - NZERO,
X        pagetok(PROCSIZE(pp)),
X        pagetok(pp->p_rssize),
X        state_abbrev[pp->p_stat],
X        cputime / 60l,
X        cputime % 60l,
X        100.0 * weighted_cpu(pct, pp),
X        100.0 * pct,
X        printable(u.u_comm));
X
X    /* return the result */
X    return(fmt);
X}
X
X/*
X *  getu(p, u) - get the user structure for the process whose proc structure
X *    is pointed to by p.  The user structure is put in the buffer pointed
X *    to by u.  Return 0 if successful, -1 on failure (such as the process
X *    being swapped out).
X */
X
Xgetu(p, u)
X
Xregister struct proc *p;
Xstruct user *u;
X
X{
X    struct pte uptes[UPAGES];
X    register caddr_t upage;
X    register struct pte *pte;
X    register nbytes, n;
X
X    /*
X     *  Check if the process is currently loaded or swapped out.  The way we
X     *  get the u area is totally different for the two cases.  For this
X     *  application, we just don't bother if the process is swapped out.
X     */
X    if ((p->p_flag & SLOAD) == 0)
X    {
X    return(-1);
X    }
X
X    /*
X     *  Process is currently in memory, we hope!
X     */
X#ifdef ns32000
X    if (!getkval(p->p_upte, uptes, sizeof(uptes), "!p->p_upte"))
X#else
X    if (!getkval(p->p_pttop, uptes, sizeof(uptes), "!p->p_upte"))
X#endif
X    {
X    /* we can't seem to get to it, so pretend it's swapped out */
X    return(-1);
X    }
X    upage = (caddr_t)u;
X    pte = uptes;
X    for (nbytes = sizeof(struct user); nbytes > 0; nbytes -= NBPG)
X    {
X        (void) lseek(mem, (long)(pte++->pg_pfnum * NBPG), 0);
X    n = MIN(nbytes, NBPG);
X    if (read(mem, upage, n) != n)
X    {
X        /* we can't seem to get to it, so pretend it's swapped out */
X        return(-1);
X    }
X    upage += n;
X    }
X    return(0);
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
Xint 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        fprintf(stderr, "kernel: no symbol named `%s'\n", 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
Xgetkval(offset, ptr, size, refstr)
X
Xunsigned long offset;
Xint *ptr;
Xint size;
Xchar *refstr;
X
X{
X    if (lseek(kmem, (long)offset, 0) == -1)
X    {
X    if (*refstr == '!')
X    {
X        refstr++;
X    }
X    fprintf(stderr, "%s: lseek to %s: %s\n",
X        KMEM, refstr, sys_errlist[errno]);
X    quit(22);
X    }
X    if (read(kmem, (char *)ptr, size) == -1)
X    {
X    if (*refstr == '!')
X    {
X        /* we lost the race with the kernel, process isn't in memory */
X        return(0);
X    }
X    else
X    {
X        fprintf(stderr, "%s: reading %s: %s\n",
X        KMEM, refstr, sys_errlist[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):  WAIT, zombie, sleep, stop, start, run.  The
X *      array declaration below maps a process state index into a number
X *      that reflects this ordering.
X */
X
Xstatic unsigned char sorted_state[] =
X{
X    0,    /* not used        */
X    3,    /* sleep        */
X    1,    /* ABANDONED (WAIT)    */
X    6,    /* run            */
X    5,    /* start        */
X    2,    /* zombie        */
X    4,    /* stop            */
X    7    /* RUN            */
X};
X
Xproc_compare(pp1, pp2)
X
Xstruct proc **pp1;
Xstruct proc **pp2;
X
X{
X    register struct proc *p1;
X    register struct proc *p2;
X    register int result;
X    register pctcpu lresult;
X
X    /* remove one level of indirection */
X    p1 = *pp1;
X    p2 = *pp2;
X
X    /* compare percent cpu (pctcpu) */
X    if ((lresult = p2->p_pctcpu - p1->p_pctcpu) == 0)
X    {
X    /* use cpticks to break the tie */
X    if ((result = p2->p_cpticks - p1->p_cpticks) == 0)
X    {
X        /* use process state to break the tie */
X        if ((result = sorted_state[p2->p_stat] -
X              sorted_state[p1->p_stat])  == 0)
X        {
X        /* use priority to break the tie */
X        if ((result = p2->p_pri - p1->p_pri) == 0)
X        {
X            /* use resident set size (rssize) to break the tie */
X            if ((result = p2->p_rssize - p1->p_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 proc **prefp;
X    register struct proc *pp;
X
X    prefp = pref;
X    cnt = pref_len;
X    while (--cnt >= 0)
X    {
X    if ((pp = *prefp++)->p_pid == (pid_t)pid)
X    {
X        return((int)pp->p_uid);
X    }
X    }
X    return(-1);
X}
END_OF_FILE
if test 17566 -ne `wc -c <'machine/m_dynix32.c'`; then
    echo shar: \"'machine/m_dynix32.c'\" unpacked with wrong size!
fi
# end of 'machine/m_dynix32.c'
fi
if test -f 'machine/m_osmp41a.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'machine/m_osmp41a.c'\"
else
echo shar: Extracting \"'machine/m_osmp41a.c'\" \(17755 characters\)
sed "s/^X//" >'machine/m_osmp41a.c' <<'END_OF_FILE'
X/*
X * top - a top users display for Unix
X *
X * SYNOPSIS:  any Solbourne running OS/MP 4.1A
X *
X * DESCRIPTION:
X * This is the machine-dependent module for OS/MP 4.1A
X * This makes top work on the following systems:
X *    Solbourne machines running OS/MP 4.1A only
X *
X * LIBS:  -lkvm
X *
X * AUTHOR:  William LeFebvre <[e-mail]>
X *          Brett McCoy <[e-mail]>
X */
X
X#include <sys/types.h>
X#include <sys/signal.h>
X/* make sure param.h gets loaded with KERNEL defined to get PZERO & NZERO */
X#define KERNEL
X#include <sys/param.h>
X#undef KERNEL
X
X#include <stdio.h>
X#include <kvm.h>
X#include <nlist.h>
X#include <math.h>
X#include <sys/dir.h>
X#include <sys/user.h>
X#include <sys/proc.h>
X#include <sys/dk.h>
X#include <sys/vm.h>
X#include <sys/file.h>
X#include <sys/time.h>
X#include <vm/page.h>
X
X#include "top.h"
X#include "machine.h"
X
X/* declarations for load_avg */
X#include "loadavg.h"
X
X/* get_process_info passes back a handle.  This is what it looks like: */
X
Xstruct handle
X{
X    struct proc **next_proc;    /* points to next valid proc pointer */
X    int remaining;        /* number of pointers remaining */
X};
X
X/* define what weighted cpu is.  */
X#define weighted_cpu(pct, pp) ((pp)->p_time == 0 ? 0.0 : \
X             ((pct) / (1.0 - exp((pp)->p_time * logcpu))))
X
X/* what we consider to be process size: */
X#define PROCSIZE(pp) ((pp)->p_tsize + (pp)->p_dsize + (pp)->p_ssize)
X
X/* definitions for indices in the nlist array */
X#define X_AVENRUN    0
X#define X_CCPU        1
X#define X_MPID        2
X#define X_NPROC        3
X#define X_PROC        4
X#define X_TOTAL        5
X#define X_CP_TIME    6
X#define X_PAGES        7
X#define X_EPAGES    8
X#define X_NCPUS        9
X#define X_CP_MP_TIME    10
X
Xstatic struct nlist nlst[] = {
X    { "_avenrun" },        /* 0 */
X    { "_ccpu" },        /* 1 */
X    { "_mpid" },        /* 2 */
X    { "_nproc" },        /* 3 */
X    { "_proc" },        /* 4 */
X    { "_total" },        /* 5 */
X    { "_cp_time" },        /* 6 */
X    { "_pages" },        /* 7 */
X    { "_epages" },        /* 8 */
X    { "_ncpus" },        /* 9 */
X    { "_cp_mp_time" },        /* 10 */
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  NI   SIZE    RES STATE    TIME   WCPU    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 %3d%6dK %5dK %-5s%5d:%02d %5.2f%% %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    "", "sleep", "WAIT", "run/\0\0", "start", "zomb", "stop"
X};
X
X/* values that we stash away in _init and use in later routines */
X
Xstatic double logcpu;
Xkvm_t *kd;
X
X/* these are retrieved from the kernel in _init */
X
Xstatic unsigned long proc;
Xstatic          int  nproc;
Xstatic load_avg ccpu;
Xstatic unsigned long pages;
Xstatic unsigned long epages;
Xstatic        int  ncpus;
X
X/* these are offsets obtained via nlist and used in the get_ functions */
X
Xstatic unsigned long mpid_offset;
Xstatic unsigned long avenrun_offset;
Xstatic unsigned long total_offset;
Xstatic unsigned long cp_time_offset;
Xstatic unsigned long cp_mp_time_offset;
X
X/* these are for calculating cpu state percentages */
X
Xstatic long cp_time[CPUSTATES];
Xstatic long cp_old[CPUSTATES];
Xstatic long cp_diff[CPUSTATES];
Xstatic long cp_mp_time[MAXNCPUS][CPUSTATES];
Xstatic long cp_mp_old[MAXNCPUS][CPUSTATES];
Xstatic long cp_mp_diff[MAXNCPUS][CPUSTATES];
Xint which_cpu_states = 9;
X
X/* these are for detailing the process states */
X
Xint process_states[7];
Xchar *procstatenames[] = {
X    "", " sleeping, ", " ABANDONED, ", " running, ", " starting, ",
X    " zombie, ", " stopped, ",
X    NULL
X};
X
X/* these are for detailing the cpu states */
X
Xint cpu_states[5];
Xint cpu_mp_states[MAXNCPUS][5];
Xchar *cpustatenames[] = {
X    "user", "nice", "system", "idle",
X    NULL
X};
X
X/* these are for detailing the memory statistics */
X
Xint memory_stats[4];
Xchar *memorynames[] = {
X    "K available, ", "K in use, ", "K free, ", "K locked", NULL
X};
X
X/* these are for keeping track of the proc array */
X
Xstatic int bytes;
Xstatic int pref_len;
Xstatic struct proc *pbase;
Xstatic struct proc **pref;
X
X/* these are for getting the memory statistics */
X
Xstatic struct page *physpage;
Xstatic int bytesize;
Xstatic int count;
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
X/* useful externals */
Xextern int errno;
Xextern char *sys_errlist[];
X
Xlong lseek();
Xlong time();
Xlong percentages();
X
Xmachine_init(statics)
X
Xstruct statics *statics;
X
X{
X    register int i;
X    register int pagesize;
X
X    /* initialize the kernel interface */
X    if ((kd = kvm_open(NULL, NULL, NULL, O_RDONLY, "top")) == NULL)
X    {
X    perror("kvm_open");
X    return(-1);
X    }
X
X    /* get the list of symbols we want to access in the kernel */
X    if ((i = kvm_nlist(kd, nlst)) < 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_PROC].n_value,   (int *)(&proc),    sizeof(proc),
X        nlst[X_PROC].n_name);
X    (void) getkval(nlst[X_NPROC].n_value,  &nproc,        sizeof(nproc),
X        nlst[X_NPROC].n_name);
X    (void) getkval(nlst[X_CCPU].n_value,   (int *)(&ccpu),    sizeof(ccpu),
X        nlst[X_CCPU].n_name);
X    (void) getkval(nlst[X_PAGES].n_value,  (int *)(&pages),    sizeof(pages),
X        nlst[X_PAGES].n_name);
X    (void) getkval(nlst[X_EPAGES].n_value, (int *)(&epages),    sizeof(epages),
X        nlst[X_EPAGES].n_name);
X
X    /* stash away certain offsets for later use */
X    mpid_offset = nlst[X_MPID].n_value;
X    avenrun_offset = nlst[X_AVENRUN].n_value;
X    total_offset = nlst[X_TOTAL].n_value;
X    cp_time_offset = nlst[X_CP_TIME].n_value;
X    cp_mp_time_offset = nlst[X_CP_MP_TIME].n_value;
X    (void) getkval(nlst[X_NCPUS].n_value, (int *)(&ncpus), sizeof(ncpus),
X           nlst[X_NCPUS].n_name);
X
X    /* this is used in calculating WCPU -- calculate it ahead of time */
X    logcpu = log(loaddouble(ccpu));
X
X    /* allocate space for proc structure array and array of pointers */
X    bytes = nproc * sizeof(struct proc);
X    pbase = (struct proc *)malloc(bytes);
X    pref  = (struct proc **)malloc(nproc * sizeof(struct proc *));
X
X    /* Just in case ... */
X    if (pbase == (struct proc *)NULL || pref == (struct proc **)NULL)
X    {
X    fprintf(stderr, "top: can't allocate sufficient memory\n");
X    return(-1);
X    }
X
X    /* allocate a table to hold all the page structs */
X    bytesize = epages - pages;
X    count = bytesize / sizeof(struct page);
X    physpage = (struct page *)malloc(epages - pages);
X    if (physpage == NULL)
X    {
X    fprintf(stderr, "top: can't allocate sufficient memory\n");
X    return(-1);
X    }
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
Xget_system_info(si)
X
Xstruct system_info *si;
X
X{
X    load_avg avenrun[3];
X    int        i;
X    int         j;
X
X    /* get the cp_time array */
X    (void) getkval(cp_time_offset, (int *)cp_time, sizeof(cp_time),
X           "_cp_time");
X
X    /* get the cp_mp_time arrays as well */
X    (void) getkval(cp_mp_time_offset, (int *) cp_mp_time, sizeof(cp_mp_time),
X         "_cp_mp_time");
X
X    /* get load average array */
X    (void) getkval(avenrun_offset, (int *)avenrun, sizeof(avenrun),
X           "_avenrun");
X
X    /* get mpid -- process id of last process */
X    (void) getkval(mpid_offset, &(si->last_pid), sizeof(si->last_pid),
X           "_mpid");
X
X    /* get the array of physpage descriptors */
X    (void) getkval(pages, (int *)physpage, bytesize, "array _page");
X
X    /* convert load averages to doubles */
X    {
X    register double *infoloadp;
X    register load_avg *sysloadp;
X
X    infoloadp = si->load_avg;
X    sysloadp = avenrun;
X    for (i = 0; i < 3; i++)
X    {
X        *infoloadp++ = loaddouble(*sysloadp++);
X    }
X    }
X
X    /* calculate percentages for each of the cpu's */
X    for (i = 0; i < ncpus; i++)
X    (void) percentages(CPUSTATES, cpu_mp_states[i], cp_mp_time[i],
X               cp_mp_old[i], cp_mp_diff[i]);
X
X    /* if the selected cpu doesn't exist show summary of all cpu's */
X    /* otherwise, show stats for selected cpu */
X    if (which_cpu_states >= ncpus) {
X    for (i = 0; i < CPUSTATES; i++) {
X        cpu_states[i] = 0;
X        for (j = 0; j < ncpus; j++)
X        cpu_states[i] += cpu_mp_states[j][i];
X    }
X    } else {
X    for (i = 0; i < CPUSTATES; i++) {
X        cpu_states[i] = cpu_mp_states[which_cpu_states][i];
X    }
X    }
X
X    /* sum memory statistics */
X    {
X    register struct page *pp;
X    register int cnt;
X    register int inuse;
X    register int free;
X    register int locked;
X
X    /* bop thru the array counting page types */
X    pp = physpage;
X    inuse = free = locked = 0;
X    for (cnt = count; --cnt >= 0; pp++)
X    {
X        if (pp->p_free)
X            free++;
X        else if (pp->p_lock || pp->p_keepcnt > 0)
X            locked++;
X        else
X            inuse++;
X    }
X
X    /* convert memory stats to Kbytes */
X    memory_stats[0] = pagetok(inuse + free);
X    memory_stats[1] = pagetok(inuse);
X    memory_stats[2] = pagetok(free);
X    memory_stats[3] = pagetok(locked);
X    }
X
X    /* set arrays and strings */
X    si->cpustates = cpu_states;
X    si->memory = memory_stats;
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 proc **prefp;
X    register struct 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    /* read all the proc structures in one fell swoop */
X    (void) getkval(proc, (int *)pbase, bytes, "proc array");
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    bzero((char *)process_states, 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->p_stat != 0 &&
X        (show_system || ((pp->p_flag & SSYS) == 0)))
X    {
X        total_procs++;
X        process_states[pp->p_stat]++;
X        if ((pp->p_stat != SZOMB) &&
X        (show_idle || (pp->p_pctcpu != 0) || (pp->p_stat == SRUN)) &&
X        (!show_uid || pp->p_uid == (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 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[128];        /* 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 proc *pp;
X    register long cputime;
X    register double pct;
X    struct user u;
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    /* get the process's user struct and set cputime */
X    if (getu(pp, &u) == -1)
X    {
X    (void) strcpy(u.u_comm, "<swapped>");
X    cputime = 0;
X    }
X    else
X    {
X    /* set u_comm for system processes */
X    if (u.u_comm[0] == '\0')
X    {
X        if (pp->p_pid == 0)
X        {
X        (void) strcpy(u.u_comm, "Swapper");
X        }
X        else if (pp->p_pid == 2)
X        {
X        (void) strcpy(u.u_comm, "Pager");
X        }
X    }
X
X    cputime = u.u_ru.ru_utime.tv_sec + u.u_ru.ru_stime.tv_sec;
X    }
X
X    /* calculate the base for cpu percentages */
X    pct = pctdouble(pp->p_pctcpu);
X
X    state_abbrev[SRUN][4] = (pp->p_lastcpu) + '0';
X
X    /* format this entry */
X    sprintf(fmt,
X        Proc_format,
X        pp->p_pid,
X        (*get_userid)(pp->p_uid),
X        pp->p_pri - PZERO,
X        pp->p_nice - NZERO,
X        pagetok(PROCSIZE(pp)),
X        pagetok(pp->p_rssize),
X        state_abbrev[pp->p_stat],
X        cputime / 60l,
X        cputime % 60l,
X        100.0 * weighted_cpu(pct, pp),
X        100.0 * pct,
X        printable(u.u_comm));
X
X    /* return the result */
X    return(fmt);
X}
X
X/*
X *  getu(p, u) - get the user structure for the process whose proc structure
X *    is pointed to by p.  The user structure is put in the buffer pointed
X *    to by u.  Return 0 if successful, -1 on failure (such as the process
X *    being swapped out).
X */
X
Xgetu(p, u)
X
Xregister struct proc *p;
Xstruct user *u;
X
X{
X    register struct user *lu;
X
X    lu = kvm_getu(kd, p);
X    if (lu == NULL)
X    {
X    return(-1);
X    }
X    else
X    {
X    *u = *lu;
X    return(0);
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
Xint 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        fprintf(stderr, "kernel: no symbol named `%s'\n", 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
Xgetkval(offset, ptr, size, refstr)
X
Xunsigned long offset;
Xint *ptr;
Xint size;
Xchar *refstr;
X
X{
X    if (kvm_read(kd, offset, 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, sys_errlist[errno]);
X        quit(23);
X        /*NOTREACHED*/
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):  WAIT, zombie, sleep, stop, start, run.  The
X *      array declaration below maps a process state index into a number
X *      that reflects this ordering.
X */
X
Xstatic unsigned char sorted_state[] =
X{
X    0,    /* not used        */
X    3,    /* sleep        */
X    1,    /* ABANDONED (WAIT)    */
X    6,    /* run            */
X    5,    /* start        */
X    2,    /* zombie        */
X    4    /* stop            */
X};
X
Xproc_compare(pp1, pp2)
X
Xstruct proc **pp1;
Xstruct proc **pp2;
X
X{
X    register struct proc *p1;
X    register struct proc *p2;
X    register int result;
X    register pctcpu lresult;
X
X    /* remove one level of indirection */
X    p1 = *pp1;
X    p2 = *pp2;
X
X    /* compare percent cpu (pctcpu) */
X    if ((lresult = p2->p_pctcpu - p1->p_pctcpu) == 0)
X    {
X    /* use cpticks to break the tie */
X    if ((result = p2->p_cpticks - p1->p_cpticks) == 0)
X    {
X        /* use process state to break the tie */
X        if ((result = sorted_state[p2->p_stat] -
X              sorted_state[p1->p_stat])  == 0)
X        {
X        /* use priority to break the tie */
X        if ((result = p2->p_pri - p1->p_pri) == 0)
X        {
X            /* use resident set size (rssize) to break the tie */
X            if ((result = p2->p_rssize - p1->p_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 * 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 proc **prefp;
X    register struct proc *pp;
X
X    prefp = pref;
X    cnt = pref_len;
X    while (--cnt >= 0)
X    {
X    if ((pp = *prefp++)->p_pid == (pid_t)pid)
X    {
X        return((int)pp->p_uid);
X    }
X    }
X    return(-1);
X}
END_OF_FILE
if test 17755 -ne `wc -c <'machine/m_osmp41a.c'`; then
    echo shar: \"'machine/m_osmp41a.c'\" unpacked with wrong size!
fi
# end of 'machine/m_osmp41a.c'
fi
echo shar: End of archive 7 \(of 13\).
cp /dev/null ark7isdone
MISSING=""
for I in 1 2 3 4 5 6 7 8 9 10 11 12 13 ; do
    if test ! -f ark${I}isdone ; then
    MISSING="${MISSING} ${I}"
    fi
done
if test "${MISSING}" = "" ; then
    echo You have unpacked all 13 archives.
    echo "Now read README and INSTALL, then run Configure"
    rm -f ark[1-9]isdone ark[1-9][0-9]isdone
else
    echo You still need to unpack the following archives:
    echo "        " ${MISSING}
fi
##  End of shell archive.
exit 0