break out special local mail processing (e.g., mapping to the

[unix-history] / usr / src / usr.bin / systat / mbufs.c

/*-
* Copyright (c) 1980, 1992, 1993
*      The Regents of the University of California.  All rights reserved.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char sccsid[] = "@(#)mbufs.c     8.1 (Berkeley) %G%";
#endif /* not lint */

#include <sys/param.h>
#include <sys/types.h>
#include <sys/mbuf.h>

#include <stdlib.h>
#include <string.h>
#include <nlist.h>
#include <paths.h>
#include "systat.h"
#include "extern.h"

static struct mbstat *mb;

char *mtnames[] = {
       "free",
       "data",
       "headers",
       "sockets",
       "pcbs",
       "routes",
       "hosts",
       "arps",
       "socknames",
       "zombies",
       "sockopts",
       "frags",
       "rights",
       "ifaddrs",
};

#define NNAMES  (sizeof (mtnames) / sizeof (mtnames[0]))

WINDOW *
openmbufs()
{
       return (subwin(stdscr, LINES-5-1, 0, 5, 0));
}

void
closembufs(w)
       WINDOW *w;
{
       if (w == NULL)
               return;
       wclear(w);
       wrefresh(w);
       delwin(w);
}

void
labelmbufs()
{
       wmove(wnd, 0, 0); wclrtoeol(wnd);
       mvwaddstr(wnd, 0, 10,
           "/0   /5   /10  /15  /20  /25  /30  /35  /40  /45  /50  /55  /60");
}

void
showmbufs()
{
       register int i, j, max, index;
       char buf[10];

       if (mb == 0)
               return;
       for (j = 0; j < wnd->maxy; j++) {
               max = 0, index = -1; 
               for (i = 0; i < wnd->maxy; i++)
                       if (mb->m_mtypes[i] > max) {
                               max = mb->m_mtypes[i];
                               index = i;
                       }
               if (max == 0)
                       break;
               if (j > NNAMES)
                       mvwprintw(wnd, 1+j, 0, "%10d", index);
               else
                       mvwprintw(wnd, 1+j, 0, "%-10.10s", mtnames[index]);
               wmove(wnd, 1 + j, 10);
               if (max > 60) {
                       sprintf(buf, " %d", max);
                       max = 60;
                       while (max--)
                               waddch(wnd, 'X');
                       waddstr(wnd, buf);
               } else {
                       while (max--)
                               waddch(wnd, 'X');
                       wclrtoeol(wnd);
               }
               mb->m_mtypes[index] = 0;
       }
       wmove(wnd, 1+j, 0); wclrtobot(wnd);
}

static struct nlist namelist[] = {
#define X_MBSTAT        0
       { "_mbstat" },
       { "" }
};

int
initmbufs()
{
       if (namelist[X_MBSTAT].n_type == 0) {
               if (kvm_nlist(kd, namelist)) {
                       nlisterr(namelist);
                       return(0);
               }
               if (namelist[X_MBSTAT].n_type == 0) {
                       error("namelist on %s failed", _PATH_UNIX);
                       return(0);
               }
       }
       if (mb == 0)
               mb = (struct mbstat *)calloc(1, sizeof (*mb));
       return(1);
}

void
fetchmbufs()
{
       if (namelist[X_MBSTAT].n_type == 0)
               return;
       NREAD(X_MBSTAT, mb, sizeof (*mb));
}