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o make systat/pigs.c use syctl() to retrieve cp_time, fscale, and ccpu 

instead of using kmem.
This commit is contained in:
Robert Watson 2000-11-25 03:49:42 +00:00
parent 8c82fe65a7
commit 00df22775a
1 changed files with 32 additions and 27 deletions
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59
usr.bin/systat/pigs.c
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@ -29,6 +29,8 @@
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef lint
@ -134,36 +136,34 @@ showpigs()
wmove(wnd, y, 0); wclrtobot(wnd);
}
static struct nlist namelist[] = {
#define X_FIRST 0
#define X_CPTIME 0
{ "_cp_time" },
#define X_CCPU 1
{ "_ccpu" },
#define X_FSCALE 2
{ "_fscale" },
{ "" }
};
int
initpigs()
{
fixpt_t ccpu;
size_t len;
int err;
if (namelist[X_FIRST].n_type == 0) {
if (kvm_nlist(kd, namelist)) {
nlisterr(namelist);
return(0);
}
if (namelist[X_FIRST].n_type == 0) {
error("namelist failed");
return(0);
}
len = sizeof(stime);
err = sysctlbyname("kern.cp_time", &stime, &len, NULL, 0);
if (err || len != sizeof(stime)) {
perror("kern.cp_time");
return (0);
}
KREAD(NPTR(X_CPTIME), stime, sizeof (stime));
NREAD(X_CCPU, &ccpu, sizeof(ccpu));
NREAD(X_FSCALE, &fscale, LONG);
len = sizeof(ccpu);
err = sysctlbyname("kern.ccpu", &ccpu, &len, NULL, 0);
if (err || len != sizeof(ccpu)) {
perror("kern.ccpu");
return (0);
}
len = sizeof(fscale);
err = sysctlbyname("kern.fscale", &fscale, &len, NULL, 0);
if (err || len != sizeof(fscale)) {
perror("kern.fscale");
return (0);
}
lccpu = log((double) ccpu / fscale);
return(1);
@ -180,9 +180,9 @@ fetchpigs()
long ctime[CPUSTATES];
double t;
static int lastnproc = 0;
size_t len;
int err;
if (namelist[X_FIRST].n_type == 0)
return;
if ((kpp = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nproc)) == NULL) {
error("%s", kvm_geterr(kd));
if (pt)
@ -215,7 +215,12 @@ fetchpigs()
/*
* and for the imaginary "idle" process
*/
KREAD(NPTR(X_CPTIME), ctime, sizeof (ctime));
len = sizeof(ctime);
err = sysctlbyname("kern.cp_time", &ctime, &len, NULL, 0);
if (err || len != sizeof(ctime)) {
perror("kern.cp_time");
return;
}
t = 0;
for (i = 0; i < CPUSTATES; i++)
t += ctime[i] - stime[i];