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/* Copyright (C) 1998-99 Martin Baulig
This file is part of LibGTop 1.0.
Contributed by Martin Baulig <martin@home-of-linux.org>, April 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/mem.h>
#include <assert.h>
#include <unistd.h>
#include <glibtop_private.h>
/* Init function. */
void
_glibtop_init_mem_s (glibtop *server)
{
server->sysdeps.mem = (1L << GLIBTOP_MEM_TOTAL)
| (1L << GLIBTOP_MEM_FREE)
| (1L << GLIBTOP_MEM_USED)
| (1L << GLIBTOP_MEM_LOCKED)
| (1L << GLIBTOP_MEM_SHARED)
| (1L << GLIBTOP_MEM_BUFFER)
| (1L << GLIBTOP_MEM_USER);
}
/* Provides information about memory usage. */
void
glibtop_get_mem_s (glibtop *server, glibtop_mem *buf)
{
kstat_ctl_t * const kc = server->machine.kc;
kstat_t *ksp;
kstat_named_t *kn;
#undef PAGESIZE
#define PAGESIZE (server->machine.pagesize)
#define PAGESHIFT (PAGESIZE + 10)
#ifdef _LP64
#define KN_VALUE kn->value.ui64
#elif !defined(KSTAT_DATA_UINT32)
#define KN_VALUE kn->value.ul
#else
#define KN_VALUE kn->value.ui32
#endif
memset (buf, 0, sizeof (glibtop_mem));
buf->total = (guint64) sysconf(_SC_PHYS_PAGES) << PAGESHIFT;
buf->flags = (1 << GLIBTOP_MEM_TOTAL);
if(!kc)
return;
switch(kstat_chain_update(kc))
{
case -1: assert(0); /* Debugging purposes, shouldn't happen */
case 0: break;
default: glibtop_get_kstats(server);
}
if((ksp = server->machine.syspages) && kstat_read(kc, ksp, NULL) >= 0)
{
kn = kstat_data_lookup(ksp, "pagesfree");
if(kn)
{
buf->free = (KN_VALUE << PAGESHIFT);
buf->used = buf->total - buf->free;
buf->flags |= (1 << GLIBTOP_MEM_FREE);
buf->flags |= (1 << GLIBTOP_MEM_USED);
}
kn = kstat_data_lookup(ksp, "pageslocked");
if(kn)
{
buf->locked = (KN_VALUE << PAGESIZE);
buf->flags |= (1 << GLIBTOP_MEM_LOCKED);
}
}
/* Bunyip module provides data in multiples of system page size */
if((ksp = server->machine.bunyip) && kstat_read(kc, ksp, NULL) >= 0)
{
kn = kstat_data_lookup(ksp, "pages_exec");
if(kn)
{
buf->shared = (KN_VALUE << PAGESHIFT);
buf->flags |= (1 << GLIBTOP_MEM_SHARED);
}
kn = kstat_data_lookup(ksp, "pages_vnode");
if(kn)
{
buf->buffer = (KN_VALUE << PAGESHIFT);
buf->flags |= (1 << GLIBTOP_MEM_BUFFER);
}
kn = kstat_data_lookup(ksp, "pages_anon");
if(kn)
{
buf->user = (KN_VALUE << PAGESHIFT);
buf->flags |= (1 << GLIBTOP_MEM_USER);
}
else
goto user_old_way;
}
else /* Bunyip is not available, let's compute buf->user the old way */
{
user_old_way:
buf->user = buf->total - buf->free - buf->cached - buf->buffer;
buf->flags |= (1 << GLIBTOP_MEM_USER);
}
}
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