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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 <sys/shm.h>
#include <glibtop.h>
#include <glibtop/error.h>
#include <glibtop/shm_limits.h>
static const unsigned long _glibtop_sysdeps_shm_limits =
(1L << GLIBTOP_IPC_SHMMAX) + (1L << GLIBTOP_IPC_SHMMIN) +
(1L << GLIBTOP_IPC_SHMMNI);
/* Init function. */
void
_glibtop_init_shm_limits_p (glibtop *server)
{
int result;
result = _glibtop_get_kmem_offset(server, "shminfo");
if (result == -1)
{
server->sysdeps.shm_limits = 0;
return;
}
server->machine.shminfo_offset = result;
server->sysdeps.shm_limits = _glibtop_sysdeps_shm_limits;
}
/* Provides information about sysv ipc limits. */
void
glibtop_get_shm_limits_p (glibtop *server, glibtop_shm_limits *buf)
{
int result;
struct shminfo shminfo;
int s;
glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_SHM_LIMITS), 0);
memset (buf, 0, sizeof (glibtop_shm_limits));
result = _glibtop_get_kmem_info(server, server->machine.shminfo_offset,
&shminfo, sizeof(struct shminfo));
if (result <= 0)
{
glibtop_error_io_r (server, "Cannot read shminfo");
return;
}
buf->shmmax = shminfo.shmmax;
buf->shmmin = shminfo.shmmin;
buf->shmmni = shminfo.shmmni;
buf->flags = _glibtop_sysdeps_shm_limits;
}
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