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Importing FreeBSD port of libgtop from Josh Sled.

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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
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94
sysdeps/freebsd/procmem.c
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@@ -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
@@ -22,11 +22,99 @@
#include <config.h>
#include <glibtop/procmem.h>
#include <kvm.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/user.h>
#include <sys/proc.h>
#include <sys/resource.h>
#include <vm/vm_map.h>
#include <machine/pmap.h>
static const unsigned long _glibtop_sysdeps_proc_mem =
(1 << GLIBTOP_PROC_MEM_SIZE) +
(1 << GLIBTOP_PROC_MEM_VSIZE) +
(1 << GLIBTOP_PROC_MEM_RESIDENT) +
/* (1 << GLIBTOP_PROC_MEM_SHARE) + */
(1 << GLIBTOP_PROC_MEM_RSS) +
(1 << GLIBTOP_PROC_MEM_RSS_RLIM);
/* Provides detailed information about a process. */
void
glibtop_get_proc_mem_p (glibtop *server, glibtop_proc_mem *buf,
glibtop_get_proc_mem_s (glibtop *server, glibtop_proc_mem *buf,
pid_t pid)
{
memset (buf, 0, sizeof (glibtop_proc_mem));
struct kinfo_proc *pinfo;
int count;
struct vmspace vms;
struct vm_map vmm;
struct pstats ps;
int f;
glibtop_init_r(&server, 0, 0);
memset (buf, 0, sizeof (glibtop_proc_mem));
if (pid == 0) {
/* Client is only interested in the flags. */
buf->flags = _glibtop_sysdeps_proc_mem;
return;
}
f = open("/dev/kmem", O_ORDONLY, NULL);
if (f == NULL) {
/* FIXME: error */
}
/* Read the vmspace from kernel memeory */
lseek(f, (long)pinfo[0].kp_proc.p_vmspace, SEEK_SET);
read(f, &vms, sizeof(vmspace));
/* Read the vm_map from kernel memeory */
lseek(f, (long)vms.vm_map, SEEK_SET);
read(f, &vmm, sizeof(vm_map));
/* Read the pstats [for the RSS rlimit] from kernel memory. */
lseek(f, (long)pinfo[0].kp_proc.p_stats, SEEK_SET);
read(f, &ps, sizeof(pstats));
close(f);
/* Get the process information */
kvm_getprocs(server->machine.kd, KERN_PROC_PID, pid, &count);
if (count != 1) {
/* Return no information */
return;
}
/* size: total # of pages in memory
(segsz_t)pinfo[0].kp_proc.p_vmspace.(vm_tsize + vm_dsize + vm_ssize)
*/
buf->size = (unsigned long)(vms.vm_tsize + vms.vm_dsize + vms.vm_ssize);
/* vsize: number of pages of VM
(vm_size_t)pinfo[0].kp_proc.p_vmspace.vm_map.size
*/
buf->vsize = (unsigned long)vmm.size;
/* resident: number of resident (non-swapped) pages [4k]
(long)pmap_resident_count(pinfo[0]->kp_proc.p_vmspace.vm_map.pmap);
*/
buf->resident = (unsigned long)pmap_resident_count(vmm.pmap);
/* share: number of pages shared (mmap'd) memory
??? vm_object has this info, but how to get it?
Even if we could, it's not reachable information.
*/
/* rss: resident set size
(segsz_t)kp_proc.p_vmspace.vm_rssize
*/
buf->rss = (unsigned long)vms.vm_rssize;
/* rss_rlim: current rss limit [bytes]
(rlim_t)kp_proc.p_limit.pl_rlimit[RLIMIT_RSS].rlim_cur
or
(long)kp_proc.p_stats->p_ru.ru_maxrss */
buf->rss_rlim = ps.p_ru.ru_maxrss;
/* Set the flags */
buf->flags = _glibtop_sysdeps_proc_mem;
}