aa9fafe5c3
2007-04-11 Benoît Dejean <benoit@placenet.org> * *: Renamed all glibtop_init_xxx functions to _glibtop_init_xxx so they get internal visibility. * configure.in: Bumped version number. svn path=/trunk/; revision=2569
95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/* 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 <config.h>
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/swap.h>
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#include <glibtop_suid.h>
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static const unsigned long _glibtop_sysdeps_swap =
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(1L << GLIBTOP_SWAP_TOTAL) + (1L << GLIBTOP_SWAP_USED) +
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(1L << GLIBTOP_SWAP_FREE);
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static const unsigned long _glibtop_sysdeps_swap_paging =
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(1L << GLIBTOP_SWAP_PAGEIN) + (1L << GLIBTOP_SWAP_PAGEOUT);
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static int pagesize;
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/* Init function. */
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void
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_glibtop_init_swap_p (glibtop *server)
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{
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pagesize = getpagesize ();
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server->sysdeps.swap = _glibtop_sysdeps_swap |
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_glibtop_sysdeps_swap_paging;
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}
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/* Provides information about swap usage. */
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void
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glibtop_get_swap_p (glibtop *server, glibtop_swap *buf)
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{
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size_t len;
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unsigned int swappgsout, swappgsin;
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int nswdev;
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struct kvm_swap kvmsw[16];
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glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_SWAP), 0);
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memset (buf, 0, sizeof (glibtop_swap));
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memset (kvmsw, 0, sizeof (kvmsw));
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nswdev = kvm_getswapinfo (server->machine.kd, kvmsw, 16, 0);
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if (nswdev < 1) return;
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buf->flags = _glibtop_sysdeps_swap;
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/* See the man page for kvm_getswapinfo(3) to see why we can do this. */
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buf->used = kvmsw[nswdev].ksw_used;
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buf->total = kvmsw[nswdev].ksw_total;
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buf->total *= pagesize;
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buf->used *= pagesize;
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buf->free = buf->total - buf->used;
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len = sizeof (swappgsout);
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if (sysctlbyname ("vm.stats.vm.v_swappgsout", &swappgsout, &len, NULL, 0)) {
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glibtop_warn_io_r (server, "sysctl (vm.stats.vm.v_swappgsout)");
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return;
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}
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len = sizeof (swappgsin);
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if (sysctlbyname ("vm.stats.vm.v_swappgsin", &swappgsin, &len, NULL, 0)) {
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glibtop_warn_io_r (server, "sysctl (vm.stats.vm.v_swappgsin)");
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return;
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}
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buf->pagein = (guint64) swappgsin;
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buf->pageout = (guint64) swappgsout;
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buf->flags |= _glibtop_sysdeps_swap_paging;
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}
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