99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
/* $Id$ */
|
|
|
|
/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
|
|
This file is part of the Gnome Top Library.
|
|
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
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The Gnome Top Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <config.h>
|
|
#include <glibtop/mem.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/vmmeter.h>
|
|
|
|
static const unsigned long _glibtop_sysdeps_mem =
|
|
(1 << GLIBTOP_MEM_TOTAL) + (1 << GLIBTOP_MEM_USED) +
|
|
(1 << GLIBTOP_MEM_FREE) + (1 << GLIBTOP_MEM_SHARED) +
|
|
(1 << GLIBTOP_MEM_BUFFER) + (1 << GLIBTOP_MEM_CACHED);
|
|
/* + (1 << GLIBTOP_MEM_USER); */
|
|
|
|
/* Provides information about memory usage. */
|
|
|
|
void
|
|
glibtop_get_mem_s (glibtop *server, glibtop_mem *buf)
|
|
{
|
|
/* for kvm_*, which is needed to get cache and buffer data */
|
|
kvm_t *kd;
|
|
struct nlist nlst[3];
|
|
static unsigned long cnt_offset;
|
|
static unsigned long bufsize_offset;
|
|
struct vmtotal vmt;
|
|
static int bufspace = 0;
|
|
/* for sysctl(3) */
|
|
size_t length_vmt;
|
|
int mib_vm[2];
|
|
struct vmmeter vmm;
|
|
|
|
/* Setup nlist array */
|
|
nlst = {
|
|
{ "_cnt" },
|
|
{ "_bufspace" },
|
|
{ 0 }
|
|
}
|
|
|
|
/* Setup MIB array for sysctl */
|
|
mib_vm[0] = CTL_VM;
|
|
mib_vm[1] = VM_METER;
|
|
|
|
glibtop_init_r (&server, 0, 0);
|
|
|
|
memset (buf, 0, sizeof (glibtop_mem));
|
|
|
|
/* Get the data from sysctl */
|
|
length_vmt = sizeof(vmt);
|
|
sysctl(mib, 2, &vmt, &length_vmt, NULL, 0);
|
|
|
|
/* Get the data from kvm_* */
|
|
kd = kvm_open(NULL, NULL, NULL, OD_RDONLY, "kvm_open");
|
|
kvm_nlist(kd, &nlst);
|
|
cnt_offset = nlst[0].n_value;
|
|
bufspace_offset = nlst[1].n_value;
|
|
kvm_read(kd, cnt_offset, &vmm, sizeof(vmm));
|
|
kvm_read(kd, bufspace_offset, &bufspace, sizeof(bufspace));
|
|
kvm_close(kd);
|
|
|
|
/* Set the values to return */
|
|
buf->flags = _glibtop_sysdeps_mem;
|
|
/* total */
|
|
buf->total = (unsigned long)vmt.t_vm;
|
|
/* used */
|
|
buf->used = (unsigned long)vmt.t_avm;
|
|
/* free */
|
|
buf->free = (unsigned long)vmt.t_free;
|
|
/* shared */
|
|
buf->shared = (unsigned long)vmt.t_vmshr;
|
|
/* buffer */
|
|
buf->buffer = (unsigned long)bufspace;
|
|
/* cached */
|
|
buf->cache = (unsigned long)(vmm.v_cache_count * vmm.v_page_size);
|
|
|
|
/* user */
|
|
/* FIXME: Any way to get or calculate this? */
|
|
|
|
}
|