oxmc/libgtop
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Importing FreeBSD port of libgtop from Josh Sled.

Browse Source
This commit is contained in:
Martin Baulig
1998-08-06 23:34:50 +00:00
parent 864867aeeb
commit 79f5a9c667
20 changed files with 554 additions and 244 deletions
Download Patch File Download Diff File Expand all files Collapse all files

90
sysdeps/freebsd/cpu.c
View File

@@ -2,7 +2,7 @@
/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
This file is part of the Gnome Top Library.
Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 1998.
The Gnome Top Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
@@ -22,6 +22,13 @@
#include <config.h>
#include <glibtop/cpu.h>
#include <nlist.h>
#include <kvm.h>
#include <sys/dkstat.h>
#include <time.h>
#include <sys/types.h>
#include <sys/sysctl.h>
static const unsigned long _glibtop_sysdeps_cpu =
(1 << GLIBTOP_CPU_TOTAL) + (1 << GLIBTOP_CPU_USER) +
(1 << GLIBTOP_CPU_NICE) + (1 << GLIBTOP_CPU_SYS) +
@@ -30,41 +37,66 @@ static const unsigned long _glibtop_sysdeps_cpu =
/* Provides information about cpu usage. */
void
glibtop_get_cpu_p (glibtop *server, glibtop_cpu *buf)
glibtop_get_cpu_s (glibtop *server, glibtop_cpu *buf)
{
long cp_time [CPUSTATES];
int i;
/* kvm_* vars */
kvm_t *kd;
static const int nlst_length=2;
long cpts[CPUSTATES];
/* sysctl vars*/
static const int mib_length=2;
int mib[mib_length];
struct clockinfo ci;
size_t length;
glibtop_init_p (server, 0, 0);
/* nlist structure for kernel access */
struct nlist nlst[nlst_length] = {
{ "_cp_time" },
{ 0 }
};
memset (buf, 0, sizeof (glibtop_cpu));
/* MIB array for sysctl(3) use */
mib[0] = CTL_KERN;
mib[1] = KERN_CLOCKRATE;
/* !!! THE FOLLOWING CODE RUNS SGID KMEM - CHANGE WITH CAUTION !!! */
setregid (server->machine.gid, server->machine.egid);
/* get the cp_time array */
glibtop_init_r (& server);
(void) _glibtop_getkval (server, _glibtop_nlist [X_CP_TIME].n_value,
(int *) cp_time, sizeof (cp_time),
_glibtop_nlist [X_CP_TIME].n_name);
if (setregid (server->machine.egid, server->machine.gid))
_exit (1);
/* !!! END OF SUID ROOT PART !!! */
buf->user = cp_time [CP_USER];
buf->nice = cp_time [CP_NICE];
buf->sys = cp_time [CP_SYS];
buf->idle = cp_time [CP_IDLE];
buf->frequency = server->machine.hz;
memset (buf, 0, sizeof (glibtop_cpu));
/* Calculate total time. */
/* Get the value out of the kernel */
if (kvm_open(NULL, NULL, NULL, O_RDONLY, "kvm_open") == NULL) {
/* If we can't get at the kernel, return the null values we just
gave the array. */
return;
}
kvm_nlist(kd, &nlst);
kvm_read(kd, nlst[0].n_value, &cpts, sizeof(cpts));
kvm_close(kd);
buf->total = buf->user + buf->nice + buf->sys + buf->idle;
/* Get the clockrate data */
length = sizeof(clockinfo);
sysctl(mib, mib_length, &ci, &len, NULL, 0);
/* Now we can set the flags. */
buf->flags = _glibtop_sysdeps_cpu;
/* set user time */
buf->user = cpts[CP_USER];
/* set nice time */
buf->nice = cpts[CP_NICE];
/* set sys time */
buf->sys = cpts[CP_SYS];
/* set idle time */
buf->idle = cpts[CP_IDLE];
/* set frequency */
/*
FIXME -- is hz, tick, profhz or stathz wanted?
buf->frequency = sysctl("kern.clockrate", ...);
struct clockinfo
*/
buf->frequency = ci.hz;
/* set total */
buf->total = cpts[CP_USER] + cpts[CP_NICE]
+ cpts[CP_SYS] + cpts[CP_IDLE];
buf->flags = _glibtop_sysdeps_cpu;
}