121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/* $Id$ */
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/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
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This file is part of the Gnome Top Library.
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Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 1998.
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The Gnome Top Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The Gnome Top Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <config.h>
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#include <glibtop/procmem.h>
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#include <kvm.h>
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <sys/user.h>
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#include <sys/proc.h>
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#include <sys/resource.h>
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#include <vm/vm_map.h>
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#include <machine/pmap.h>
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static const unsigned long _glibtop_sysdeps_proc_mem =
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(1 << GLIBTOP_PROC_MEM_SIZE) +
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(1 << GLIBTOP_PROC_MEM_VSIZE) +
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(1 << GLIBTOP_PROC_MEM_RESIDENT) +
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/* (1 << GLIBTOP_PROC_MEM_SHARE) + */
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(1 << GLIBTOP_PROC_MEM_RSS) +
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(1 << GLIBTOP_PROC_MEM_RSS_RLIM);
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/* Provides detailed information about a process. */
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void
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glibtop_get_proc_mem_s (glibtop *server, glibtop_proc_mem *buf,
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pid_t pid)
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{
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struct kinfo_proc *pinfo;
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int count;
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struct vmspace vms;
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struct vm_map vmm;
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struct pstats ps;
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int f;
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glibtop_init_r(&server, 0, 0);
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memset (buf, 0, sizeof (glibtop_proc_mem));
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if (pid == 0) {
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/* Client is only interested in the flags. */
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buf->flags = _glibtop_sysdeps_proc_mem;
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return;
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}
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f = open("/dev/kmem", O_ORDONLY, NULL);
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if (f == NULL) {
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/* FIXME: error */
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}
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/* Read the vmspace from kernel memeory */
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lseek(f, (long)pinfo[0].kp_proc.p_vmspace, SEEK_SET);
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read(f, &vms, sizeof(vmspace));
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/* Read the vm_map from kernel memeory */
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lseek(f, (long)vms.vm_map, SEEK_SET);
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read(f, &vmm, sizeof(vm_map));
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/* Read the pstats [for the RSS rlimit] from kernel memory. */
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lseek(f, (long)pinfo[0].kp_proc.p_stats, SEEK_SET);
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read(f, &ps, sizeof(pstats));
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close(f);
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/* Get the process information */
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kvm_getprocs(server->machine.kd, KERN_PROC_PID, pid, &count);
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if (count != 1) {
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/* Return no information */
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return;
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}
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/* size: total # of pages in memory
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(segsz_t)pinfo[0].kp_proc.p_vmspace.(vm_tsize + vm_dsize + vm_ssize)
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*/
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buf->size = (unsigned long)(vms.vm_tsize + vms.vm_dsize + vms.vm_ssize);
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/* vsize: number of pages of VM
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(vm_size_t)pinfo[0].kp_proc.p_vmspace.vm_map.size
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*/
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buf->vsize = (unsigned long)vmm.size;
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/* resident: number of resident (non-swapped) pages [4k]
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(long)pmap_resident_count(pinfo[0]->kp_proc.p_vmspace.vm_map.pmap);
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*/
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buf->resident = (unsigned long)pmap_resident_count(vmm.pmap);
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/* share: number of pages shared (mmap'd) memory
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??? vm_object has this info, but how to get it?
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Even if we could, it's not reachable information.
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*/
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/* rss: resident set size
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(segsz_t)kp_proc.p_vmspace.vm_rssize
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*/
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buf->rss = (unsigned long)vms.vm_rssize;
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/* rss_rlim: current rss limit [bytes]
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(rlim_t)kp_proc.p_limit.pl_rlimit[RLIMIT_RSS].rlim_cur
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or
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(long)kp_proc.p_stats->p_ru.ru_maxrss */
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buf->rss_rlim = ps.p_ru.ru_maxrss;
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/* Set the flags */
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buf->flags = _glibtop_sysdeps_proc_mem;
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}
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