1 files changed, 86 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/darwin/systemmem-darwin.cpp b/src/VBox/Runtime/r3/darwin/systemmem-darwin.cpp
new file mode 100644
index 00000000..eeb70451
--- /dev/null
+++ b/src/VBox/Runtime/r3/darwin/systemmem-darwin.cpp
@@ -0,0 +1,86 @@
+/* $Id: systemmem-darwin.cpp $ */
+/** @file
+ * IPRT - RTSystemQueryTotalRam, darwin ring-3.
+ */
+
+/*
+ * Copyright (C) 2012-2020 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <iprt/system.h>
+#include "internal/iprt.h"
+
+#include <iprt/errcore.h>
+#include <iprt/assert.h>
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/sysctl.h>
+#include <sys/stat.h>
+#include <mach/mach.h>
+
+
+
+RTDECL(int) RTSystemQueryTotalRam(uint64_t *pcb)
+{
+    AssertPtrReturn(pcb, VERR_INVALID_POINTER);
+
+    int aiMib[2];
+    aiMib[0] = CTL_HW;
+    aiMib[1] = HW_MEMSIZE;
+    uint64_t    cbPhysMem = UINT64_MAX;
+    size_t      cb = sizeof(cbPhysMem);
+    int rc = sysctl(aiMib, RT_ELEMENTS(aiMib), &cbPhysMem, &cb, NULL, 0);
+    if (rc == 0)
+    {
+        *pcb = cbPhysMem;
+        return VINF_SUCCESS;
+    }
+    return RTErrConvertFromErrno(errno);
+}
+
+
+RTDECL(int) RTSystemQueryAvailableRam(uint64_t *pcb)
+{
+    AssertPtrReturn(pcb, VERR_INVALID_POINTER);
+
+    static mach_port_t volatile s_hSelfPort = 0;
+    mach_port_t hSelfPort = s_hSelfPort;
+    if (hSelfPort == 0)
+        s_hSelfPort = hSelfPort = mach_host_self();
+
+    vm_statistics_data_t    VmStats;
+    mach_msg_type_number_t  cItems = sizeof(VmStats) / sizeof(natural_t);
+
+    kern_return_t krc = host_statistics(hSelfPort, HOST_VM_INFO, (host_info_t)&VmStats, &cItems);
+    if (krc == KERN_SUCCESS)
+    {
+        uint64_t cPages = VmStats.inactive_count;
+        cPages += VmStats.free_count;
+        *pcb = cPages * PAGE_SIZE;
+        return VINF_SUCCESS;
+    }
+    return RTErrConvertFromDarwin(krc);
+}
+