* 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 6.4 (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 (sysctl(mib
, 2, &loadinfo
, &size
, NULL
, 0) < 0) {
if ((alreadyopen
= kvm_openfiles(NULL
, NULL
, NULL
)) == -1)
if (kvm_read((off_t
)nl
[X_AVERUNNABLE
].n_value
,
(char *)&loadinfo
, sizeof(loadinfo
)) != size
)
* Old kernel have fscale separately; if not found assume
if (kvm_read( (off_t
)nl
[X_FSCALE
].n_value
, (char *)&fscale
,
sizeof(fscale
)) == sizeof(fscale
))
loadinfo
.fscale
= fscale
;
nelem
= MIN(nelem
, sizeof(loadinfo
.ldavg
) / sizeof(fixpt_t
));
for (i
= 0; i
< nelem
; i
++)
loadavg
[i
] = (double) loadinfo
.ldavg
[i
] / loadinfo
.fscale
;