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/*
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This file is part of LibGTop 2.0.
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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 <unistd.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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#include <mach/mach_host.h>
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#include <mach/host_info.h>
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#include <mach/mach_init.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <dirent.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) + (1L << GLIBTOP_SWAP_PAGEIN) +
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(1L << GLIBTOP_SWAP_PAGEOUT);
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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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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_p (glibtop *server, glibtop_swap *buf)
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{
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vm_statistics_data_t vm_info;
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mach_msg_type_number_t info_count;
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DIR *dirp;
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struct dirent *dp;
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struct statfs sfs;
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u_int64_t total, used;
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glibtop_init_p (server, (1 << GLIBTOP_SYSDEPS_SWAP), 0);
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memset (buf, 0, sizeof (glibtop_swap));
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total = used = 0;
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dirp = opendir ("/private/var/vm");
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if (!dirp) {
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glibtop_warn_io_r (server, "opendir (swap)");
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return;
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}
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while ((dp = readdir (dirp)) != NULL) {
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struct stat sb;
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char fname [MAXNAMLEN];
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if (strncmp (dp->d_name, "swapfile", 8))
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continue;
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strcpy (fname, "/private/var/vm/");
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strcat (fname, dp->d_name);
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if (stat (fname, &sb) < 0)
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continue;
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used += sb.st_size;
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}
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closedir (dirp);
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if (statfs ("/private/var/vm", &sfs) < 0) {
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glibtop_warn_io_r (server, "statfs (swap)");
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return;
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}
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total = (u_int64_t)sfs.f_bfree * sfs.f_bsize + used;
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info_count = HOST_VM_INFO_COUNT;
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if (host_statistics (mach_host_self (), HOST_VM_INFO,
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(host_info_t) &vm_info, &info_count)) {
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glibtop_warn_io_r (server, "host_statistics (swap)");
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return;
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}
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buf->total = total;
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buf->used = used;
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buf->free = total - used;
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buf->pagein = vm_info.pageins;
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buf->pageout = vm_info.pageouts;
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buf->flags = _glibtop_sysdeps_swap;
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}
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