reorganize window management to allow display routines to set

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

#ifndef lint
static char sccsid[] = "@(#)mbufs.c     1.2 (Lucasfilm) %G%";
#endif

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

WINDOW *
openmbufs()
{
       static WINDOW *w = NULL;

       if (w == NULL)
               w = newwin(20, 70, 3, 5);
       return (w);
}

closembufs(w)
       WINDOW *w;
{

       if (w == NULL)
               return;
       move(5, 0);
       clrtobot();
       wclear(w);
       wrefresh(w);
}

struct  mbstat *mb;

labelmbufs()
{

       move(5, 0); clrtoeol();
       mvaddstr(5, 20,
               "/0   /5   /10  /15  /20  /25  /30  /35  /40  /45  /50");
}

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

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

       if (mb == 0)
               return;
       for (j = 0; j < 15; j++) {
               max = 0, index = -1; 
               for (i = 0; i < 15; i++)
                       if (mb->m_mtypes[i] > max) {
                               max = mb->m_mtypes[i];
                               index = i;
                       }
               if (max == 0)
                       break;
               wmove(wnd, 3 + j, 0);
               waddstr(wnd, mtnames[index]);
               wmove(wnd, 3 + j, 15);
               if (max > 50) {
                       sprintf(buf, " %d", max);
                       max = 50;
                       while (max--)
                               waddch(wnd, 'X');
                       waddstr(wnd, buf);
               } else {
                       while (max--)
                               waddch(wnd, 'X');
                       wclrtoeol(wnd);
               }
               mb->m_mtypes[index] = 0;
       }
       while (j++ < 15) {
               wmove(wnd, 3 + j, 0);
               wclrtoeol(wnd);
       }
}

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

initmbufs()
{

       if (nlst[X_MBSTAT].n_type == 0) {
               nlist("/vmunix", nlst);
               if (nlst[X_MBSTAT].n_type == 0) {
                       error("namelist on /vmunix failed");
                       return;
               }
       }
       if (mb == 0)
               mb = (struct mbstat *)calloc(1, sizeof (*mb));
}

fetchmbufs()
{

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