cf611f9157
1999-02-22 Martin Baulig <martin@home-of-linux.org> Set the copyright of LibGTop to the GNU General Public License. * copyright.txt: Set the year to 1998-99 and pretty-format it a little bit. Same in all C source and header files.
92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
/* $Id$ */
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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include <glibtop.h>
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#include <glibtop/mem.h>
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#include <glibtop_suid.h>
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static const unsigned long _glibtop_sysdeps_mem =
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(1 << GLIBTOP_MEM_TOTAL) + (1 << GLIBTOP_MEM_USED) +
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(1 << GLIBTOP_MEM_FREE) + (1 << GLIBTOP_MEM_LOCKED);
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/* define pagetok in terms of pageshift */
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#define pagetok(size) ((size) << server->machine.pageshift)
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/* Provides information about memory usage. */
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void
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glibtop_get_mem_p (glibtop *server, glibtop_mem *buf)
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{
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glibtop_init_p (server, (1 << GLIBTOP_SYSDEPS_MEM), 0);
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memset (buf, 0, sizeof (glibtop_mem));
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/* !!! THE FOLLOWING CODE RUNS SGID KMEM - CHANGE WITH CAUTION !!! */
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glibtop_suid_enter (server);
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/* get the array of physpage descriptors */
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(void) _glibtop_getkval (server, server->machine.pages,
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(int *) server->machine.physpage,
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server->machine.bytesize,
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"array _page");
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glibtop_suid_leave (server);
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/* !!! END OF SGID KMEM PART !!! */
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{ /* sum memory statistics */
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register struct page *pp;
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register int cnt;
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register int inuse;
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register int free;
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register int locked;
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/* bop thru the array counting page types */
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pp = server->machine.physpage;
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inuse = free = locked = 0;
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for (cnt = server->machine.count; --cnt >= 0; pp++) {
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if (pp->p_free)
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free++;
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else if (pp->p_lock || pp->p_keepcnt > 0)
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locked++;
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else
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inuse++;
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}
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/* convert memory stats to Kbytes */
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buf->total = pagetok (inuse + free);
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buf->used = pagetok (inuse);
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buf->free = pagetok (free);
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buf->locked = pagetok (locked);
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buf->flags = _glibtop_sysdeps_mem;
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}
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}
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