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-rw-r--r--lib/isc/unix/meminfo.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/lib/isc/unix/meminfo.c b/lib/isc/unix/meminfo.c
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+++ b/lib/isc/unix/meminfo.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * 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 http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#include <config.h>
+
+#include <isc/meminfo.h>
+#include <inttypes.h>
+#include <unistd.h>
+#ifdef HAVE_SYS_SYSCTL_H
+#include <sys/sysctl.h>
+#endif
+
+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
+ uint64_t size = 0;
+ size_t len = sizeof(size);
+ if (sysctl(mib, 2, &size, &len, NULL, 0) == 0)
+ return (size);
+#endif
+#if defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE)
+ return ((size_t) (sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGESIZE)));
+#endif
+ return (0);
+}