newvm changes for memory size

[unix-history] / usr / src / bin / ps / nlist.c

/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char sccsid[] = "@(#)nlist.c     5.4 (Berkeley) %G%";
#endif /* not lint */

#include <sys/param.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <nlist.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>

#ifdef SPPWAIT
#define NEWVM
#endif

struct  nlist psnl[] = {
       {"_fscale"},
#define X_FSCALE        0
       {"_ccpu"},
#define X_CCPU          1
#ifdef NEWVM
       {"_avail_start"},
#define X_AVAILSTART    2
       {"_avail_end"},
#define X_AVAILEND      3
#else
       {"_ecmx"},
#define X_ECMX          2
#endif
       {NULL}
};

fixpt_t ccpu;                           /* kernel _ccpu variable */
int     nlistread;                      /* if nlist already read. */
int     mempages;                       /* number of pages of phys. memory */
int     fscale;                         /* kernel _fscale variable */

#define kread(x, v) \
       kvm_read(psnl[x].n_value, (char *)&v, sizeof v) != sizeof(v)

donlist()
{
       extern int eval;
       int rval;
#ifdef NEWVM
       int tmp;
#endif

       rval = 0;
       nlistread = 1;
       if (kvm_nlist(psnl)) {
               (void)fprintf(stderr, "ps: kvm_nlist: %s\n", kvm_geterr());
               eval = 1;
               return(1);
       }
       if (kread(X_FSCALE, fscale)) {
               (void)fprintf(stderr, "ps: fscale: %s\n", kvm_geterr());
               eval = rval = 1;
       }
#ifdef NEWVM
       if (kread(X_AVAILEND, mempages)) {
               (void)fprintf(stderr, "ps: avail_start: %s\n", kvm_geterr());
               eval = rval = 1;
       }
       if (kread(X_AVAILSTART, tmp)) {
               (void)fprintf(stderr, "ps: avail_end: %s\n", kvm_geterr());
               eval = rval = 1;
       }
       mempages -= tmp;
#else
       if (kread(X_ECMX, mempages)) {
               (void)fprintf(stderr, "ps: ecmx: %s\n", kvm_geterr());
               eval = rval = 1;
       }
#endif
       if (kread(X_CCPU, ccpu)) {
               (void)fprintf(stderr, "ps: ccpu: %s\n", kvm_geterr());
               eval = rval = 1;
       }
       return(rval);
}