mirror of
https://gitlab.isc.org/isc-projects/bind9
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41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
/*
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* Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <isc/meminfo.h>
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#include <unistd.h>
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#include <sys/sysctl.h>
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isc_uint64_t
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isc_meminfo_totalphys(void) {
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#if defined(CTL_HW) && (defined(HW_PHYSMEM64) || defined(HW_MEMSIZE))
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int mib[2];
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mib[0] = CTL_HW;
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#if defined(HW_MEMSIZE)
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mib[1] = HW_MEMSIZE;
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#elif defined(HW_PHYSMEM64)
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mib[1] = HW_PHYSMEM64;
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#endif
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isc_uint64_t size = 0;
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size_t len = sizeof(size);
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if (sysctl(mib, 2, &size, &len, NULL, 0) == 0)
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return (size);
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#endif
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#if defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE)
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return ((size_t) (sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGESIZE)));
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#endif
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return (0);
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}
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