* Copyright (c) 1989 The Regents of the University of California.
* %sccs.include.redist.c%
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid
[] = "@(#)getloadavg.c 6.2 (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */
static struct nlist nl
[] = {
* getloadavg() -- Get system load averages.
* Put `nelem' samples into `loadavg' array.
* Return number of samples retrieved, or -1 on error.
getloadavg(loadavg
, nelem
)
static int need_nlist
= 1;
if ((alreadyopen
= kvm_openfiles(NULL
, NULL
, NULL
)) == -1)
if (kvm_read((off_t
)nl
[X_AVERUNNABLE
].n_value
, (char *)averunnable
,
sizeof(averunnable
)) != sizeof(averunnable
))
if (kvm_read( (off_t
)nl
[X_FSCALE
].n_value
, (char *)&fscale
,
sizeof(fscale
)) != sizeof(fscale
))
nelem
= MIN(nelem
, sizeof(averunnable
) / sizeof(averunnable
[0]));
for (i
= 0; i
< nelem
; i
++)
loadavg
[i
] = (double) averunnable
[i
] / fscale
;