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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include <inttypes.h>
#include <unistd.h>
#include <isc/meminfo.h>
#if defined(HAVE_SYS_SYSCTL_H) && !defined(__linux__)
#include <sys/sysctl.h>
#endif /* if defined(HAVE_SYS_SYSCTL_H) && !defined(__linux__) */
uint64_t
isc_meminfo_totalphys(void) {
#if defined(CTL_HW) && (defined(HW_PHYSMEM64) || defined(HW_MEMSIZE))
int mib[2];
mib[0] = CTL_HW;
#if defined(HW_MEMSIZE)
mib[1] = HW_MEMSIZE;
#elif defined(HW_PHYSMEM64)
mib[1] = HW_PHYSMEM64;
#endif /* if defined(HW_MEMSIZE) */
uint64_t size = 0;
size_t len = sizeof(size);
if (sysctl(mib, 2, &size, &len, NULL, 0) == 0) {
return (size);
}
#endif /* if defined(CTL_HW) && (defined(HW_PHYSMEM64) || defined(HW_MEMSIZE)) \
* */
#if defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE)
long pages = sysconf(_SC_PHYS_PAGES);
long pagesize = sysconf(_SC_PAGESIZE);
if (pages == -1 || pagesize == -1) {
return (0);
}
return ((size_t)pages * pagesize);
#endif /* if defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE) */
return (0);
}
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