69 lines
2.0 KiB
C
69 lines
2.0 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/shm_limits.h>
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#include <kvm.h>
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#include <sys/shm.h>
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static struct nlist nlst[] = { {"shminfo"}, {NULL} };
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static const unsigned long _glibtop_sysdeps_shm_limits =
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(1L << GLIBTOP_IPC_SHMMAX) + (1L << GLIBTOP_IPC_SHMMIN) +
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(1L << GLIBTOP_IPC_SHMMNI) + (1L << GLIBTOP_IPC_SHMSEG);
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/* Init function. */
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void
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glibtop_init_shm_limits_p (glibtop *server)
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{
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kvm_t *kd = server->machine.kd;
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if(kd && !kvm_nlist(kd, nlst))
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server->sysdeps.shm_limits = _glibtop_sysdeps_shm_limits;
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else
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server->sysdeps.shm_limits = 0;
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}
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/* Provides information about sysv ipc limits. */
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void
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glibtop_get_shm_limits_p (glibtop *server, glibtop_shm_limits *buf)
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{
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kvm_t *kd = server->machine.kd;
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struct shminfo sinfo;
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memset (buf, 0, sizeof (glibtop_shm_limits));
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if(!(server->sysdeps.shm_limits))
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return;
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if(kvm_read(kd, nlst[0].n_value, (void *)&sinfo,
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sizeof(struct shminfo)) != sizeof(struct shminfo))
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return;
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buf->shmmax = sinfo.shmmax;
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buf->shmmin = sinfo.shmmin;
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buf->shmmni = sinfo.shmmni;
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buf->shmseg = sinfo.shmseg;
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buf->flags = _glibtop_sysdeps_shm_limits;
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}
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