BSD 4_3_Reno release

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

/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved.  The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/

#ifndef lint
static char sccsid[] = "@(#)mbufs.c     5.3 (Berkeley) 5/11/89";
#endif not lint

#include "systat.h"
#include <sys/mbuf.h>
#include <paths.h>

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

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

struct  mbstat *mb;

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

char *mtnames[] = {
       "free",
       "data",
       "headers",
       "sockets",
       "pcbs",
       "routes",
       "hosts",
       "arps",
       "socknames",
       "zombies",
       "sockopts",
       "frags",
       "rights",
       "ifaddrs",
};
#define NNAMES  (sizeof (mtnames) / sizeof (mtnames[0]))

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 nlst[] = {
#define X_MBSTAT        0
       { "_mbstat" },
       { "" }
};

initmbufs()
{
       if (nlst[X_MBSTAT].n_type == 0) {
               nlist(_PATH_UNIX, nlst);
               if (nlst[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);
}

fetchmbufs()
{
       if (nlst[X_MBSTAT].n_type == 0)
               return;
       lseek(kmem, nlst[X_MBSTAT].n_value, L_SET);
       read(kmem, mb, sizeof (*mb));
}