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/* Copyright (C) 1998 Joshua Sled
This file is part of LibGTop 1.0.
Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 1998.
LibGTop is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
LibGTop 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with LibGTop; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <glibtop.h>
#include <glibtop/error.h>
#include <glibtop/procmem.h>
#include <glibtop_suid.h>
#include <kvm.h>
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/resource.h>
#include <vm/vm_object.h>
#include <vm/vm_map.h>
#include <sys/vnode.h>
#include <ufs/ufs/quota.h>
#include <ufs/ufs/inode.h>
#include <sys/ucred.h>
#include <sys/user.h>
#include <sys/sysctl.h>
#include <vm/vm.h>
static const unsigned long _glibtop_sysdeps_proc_mem =
(1L << GLIBTOP_PROC_MEM_SIZE) +
(1L << GLIBTOP_PROC_MEM_VSIZE) +
(1L << GLIBTOP_PROC_MEM_RESIDENT) +
(1L << GLIBTOP_PROC_MEM_RSS) +
(1L << GLIBTOP_PROC_MEM_RSS_RLIM);
static const unsigned long _glibtop_sysdeps_proc_mem_share =
(1L << GLIBTOP_PROC_MEM_SHARE);
/* define pagetok in terms of pageshift */
#define ps_pgtok(a) (((a) * getpagesize()) / 1024)
/* Init function. */
void
_glibtop_init_proc_mem_p (glibtop *server)
{
server->sysdeps.proc_mem = _glibtop_sysdeps_proc_mem |
_glibtop_sysdeps_proc_mem_share;
}
/* Provides detailed information about a process. */
void
glibtop_get_proc_mem_p (glibtop *server, glibtop_proc_mem *buf,
pid_t pid)
{
struct kinfo_proc *pinfo;
struct vm_map_entry entry, *first;
struct vmspace vmspace;
struct vm_object object;
int count;
glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_PROC_MEM), 0);
memset (buf, 0, sizeof (glibtop_proc_mem));
if (server->sysdeps.proc_mem == 0)
return;
/* It does not work for the swapper task. */
if (pid == 0) return;
/* Get the process data */
pinfo = kvm_getprocs (server->machine.kd, KERN_PROC_PID, pid, &count);
if ((pinfo == NULL) || (count < 1)) {
glibtop_warn_io_r (server, "kvm_getprocs (%d)", pid);
return;
}
#define PROC_VMSPACE ki_vmspace
buf->rss_rlim = pinfo [0].ki_rssize;
buf->vsize = buf->size = (guint64)
(pinfo [0].ki_size / 1024);
buf->resident = buf->rss = (guint64)
ps_pgtok (pinfo [0].ki_rssize);
/* Now we get the shared memory. */
if (kvm_read (server->machine.kd,
(unsigned long) pinfo [0].PROC_VMSPACE,
(char *) &vmspace, sizeof (vmspace)) != sizeof (vmspace)) {
glibtop_warn_io_r (server, "kvm_read (vmspace)");
return;
}
first = vmspace.vm_map.header.next;
if (kvm_read (server->machine.kd,
(unsigned long) vmspace.vm_map.header.next,
(char *) &entry, sizeof (entry)) != sizeof (entry)) {
glibtop_warn_io_r (server, "kvm_read (entry)");
return;
}
/* Walk through the `vm_map_entry' list ... */
/* I tested this a few times with `mmap'; as soon as you write
* to the mmap'ed area, the object type changes from OBJT_VNODE
* to OBJT_DEFAULT so if seems this really works. */
while (entry.next != first) {
if (kvm_read (server->machine.kd,
(unsigned long) entry.next,
(char *) &entry, sizeof (entry)) != sizeof (entry)) {
glibtop_warn_io_r (server, "kvm_read (entry)");
return;
}
if (entry.eflags & (MAP_ENTRY_IS_SUB_MAP))
continue;
if (!entry.object.vm_object)
continue;
/* We're only interested in `vm_object's */
if (kvm_read (server->machine.kd,
(unsigned long) entry.object.vm_object,
(char *) &object, sizeof (object)) != sizeof (object)) {
glibtop_warn_io_r (server, "kvm_read (object)");
return;
}
if (object.type != OBJT_VNODE)
continue;
buf->share += object.un_pager.vnp.vnp_size;
}
buf->flags = _glibtop_sysdeps_proc_mem |
_glibtop_sysdeps_proc_mem_share;
}
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