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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/msg_limits.h>
#include <kvm.h>
#include <rctl.h>
#include <sys/msg.h>
static const struct nlist nlst[] = { {"glibtop_msg_limits"}, {NULL} };
#if GLIBTOP_SOLARIS_RELEASE < 51000
static const unsigned long _glibtop_sysdeps_msg_limits =
#if GLIBTOP_SOLARIS_RELEASE <= 50700
(1L << GLIBTOP_IPC_MSGMAP) + (1L << GLIBTOP_IPC_MSGSSZ) +
#endif
(1L << GLIBTOP_IPC_MSGPOOL) + (1L << GLIBTOP_IPC_MSGMAX) +
(1L << GLIBTOP_IPC_MSGMNB) + (1L << GLIBTOP_IPC_MSGMNI) +
(1L << GLIBTOP_IPC_MSGTQL);
#else
static const unsigned long _glibtop_sysdeps_msg_limits = 0;
#endif
/* Init function. */
void
glibtop_init_msg_limits_p (glibtop *server)
{
#if GLIBTOP_SOLARIS_RELEASE < 51000
kvm_t *kd = server->machine.kd;
if(kd && !kvm_nlist(kd, nlst))
server->sysdeps.msg_limits = _glibtop_sysdeps_msg_limits;
else
server->sysdeps.msg_limits = 0;
#endif
}
/* Provides information about sysv ipc limits. */
void
glibtop_get_msg_limits_p (glibtop *server, glibtop_msg_limits *buf)
{
#if GLIBTOP_SOLARIS_RELEASE < 51000
kvm_t *kd = server->machine.kd;
glibtop_msg_limits minfo;
memset (buf, 0, sizeof (glibtop_msg_limits));
if(!(server->sysdeps.msg_limits))
return;
if(kvm_read(kd, nlst[0].n_value, (void *)&minfo,
sizeof(glibtop_msg_limits)) != sizeof(glibtop_msg_limits))
return;
#if GLIBTOP_SOLARIS_RELEASE <= 50700
/* These fields don't exist anymore in Solaris 8.
* Thanks to Laszlo PETER <Laszlo.Peter@ireland.sun.com>. */
buf->msgmap = minfo.msgmap;
buf->msgssz = minfo.msgssz;
#endif
buf->msgmax = minfo.msgmax;
buf->msgmnb = minfo.msgmnb;
buf->msgmni = minfo.msgmni;
buf->msgtql = minfo.msgtql;
#endif
#if GLIBTOP_SOLARIS_RELEASE >= 51000
rctlblk_t *rblk;
if ((rblk = malloc(rctlblk_size())) == NULL)
return;
if (getrctl("project.max-msg-qbytes", NULL, rblk, RCTL_FIRST) == -1)
return;
else
buf->msgmnb = rctlblk_get_value(rblk);
if (getrctl("project.max-msg-ids", NULL, rblk, RCTL_FIRST) == -1)
return;
else
buf->msgmni = rctlblk_get_value(rblk);
if (getrctl("project.max-msg-messages", NULL, rblk, RCTL_FIRST) == -1)
return;
else
buf->msgtql = rctlblk_get_value(rblk);
/* this is the maximum size of a system V message, which has been obsoleted as a kernel tunable value now */
/* and it should always be 65535 instead, so I list it here, if needed, can be removed */
buf->msgmax = 65535;
#endif
buf->msgpool = buf->msgmni * buf->msgmnb >> 10;
buf->flags = _glibtop_sysdeps_msg_limits;
}
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