Blame sysdeps/solaris/swap.c

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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., 51 Franklin Street, Fifth Floor,
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   Boston, MA 02110-1301, 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 <unistd.h>
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#include <sys/swap.h>
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#include <glibtop_private.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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/* Init function. */
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void
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_glibtop_init_swap_s (glibtop *server)
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{
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    server->sysdeps.swap = _glibtop_sysdeps_swap;
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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_s (glibtop *server, glibtop_swap *buf)
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{
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    swaptbl_t *s = NULL;
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    int i, n1, n2;
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    /* we don't care about ste_path, and we're lazy */
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    char shared_path[BUFSIZ]; /* hope this is large enough */
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    const int pagesize = getpagesize();
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    memset(buf, 0, sizeof *buf);
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    switch( (n1 = swapctl(SC_GETNSWP, NULL)) )
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    {
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    case -1:
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	glibtop_warn_r(server, "swapctl: GETNSWP");
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	return;
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    case 0:
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	/* no swapfile */
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	goto out_no_swap;
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    default:
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	break;
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    }
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    /* RTFM */
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    s = g_malloc(sizeof(swaptbl_t)
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		 + n1 * sizeof(swapent_t));
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    s->swt_n = n1;
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    /* initialize string pointers */
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    for (i = 0; i < n1; i++)
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    {
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	s->swt_ent[i].ste_path = shared_path;
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    }
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    if ((n2 = swapctl(SC_LIST, s)) < 0)
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    {
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	glibtop_warn_r(server, "swapctl: SC_LIST");
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	goto out_free;
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    }
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    /* #swapfile may have changed between the 2 swapctl() calls
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     * we don't care, we just use the smallest #swapfile */
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    for (i = 0; i < MIN(n1, n2); i++)
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    {
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	buf->total += s->swt_ent[i].ste_pages;
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	buf->free  += s->swt_ent[i].ste_free;
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    }
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    buf->total *= pagesize;
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    buf->free  *= pagesize;
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    buf->used   = buf->total - buf->free;
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 out_no_swap:
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    buf->flags  = _glibtop_sysdeps_swap;
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 out_free:
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    g_free(s);
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}