1 files changed, 108 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/darwin/time-r0drv-darwin.cpp b/src/VBox/Runtime/r0drv/darwin/time-r0drv-darwin.cpp
new file mode 100644
index 00000000..ca0f70eb
--- /dev/null
+++ b/src/VBox/Runtime/r0drv/darwin/time-r0drv-darwin.cpp
@@ -0,0 +1,108 @@
+/* $Id: time-r0drv-darwin.cpp $ */
+/** @file
+ * IPRT - Time, Ring-0 Driver, Darwin.
+ */
+
+/*
+ * Copyright (C) 2006-2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox 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.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define LOG_GROUP RTLOGGROUP_TIME
+#include "the-darwin-kernel.h"
+#include "internal/iprt.h"
+#include <iprt/time.h>
+
+#include <iprt/asm.h>
+
+
+DECLINLINE(uint64_t) rtTimeGetSystemNanoTS(void)
+{
+    static int8_t s_fSimple = -1;
+
+    /* first call: check if life is simple or not. */
+    if (s_fSimple < 0)
+    {
+        struct mach_timebase_info Info;
+        clock_timebase_info(&Info);
+        ASMAtomicXchgS8((int8_t * volatile)&s_fSimple, Info.denom == 1 && Info.numer == 1);
+    }
+
+    /* special case: absolute time is in nanoseconds */
+    if (s_fSimple)
+        return mach_absolute_time();
+
+    /* general case: let mach do the mult/div for us. */
+    uint64_t u64;
+    absolutetime_to_nanoseconds(mach_absolute_time(), &u64);
+    return u64;
+}
+
+
+RTDECL(uint64_t) RTTimeNanoTS(void)
+{
+    return rtTimeGetSystemNanoTS();
+}
+
+
+RTDECL(uint64_t) RTTimeMilliTS(void)
+{
+    return rtTimeGetSystemNanoTS() / RT_NS_1MS;
+}
+
+
+RTDECL(uint64_t) RTTimeSystemNanoTS(void)
+{
+    return rtTimeGetSystemNanoTS();
+}
+
+
+RTDECL(uint64_t) RTTimeSystemMilliTS(void)
+{
+    return rtTimeGetSystemNanoTS() / RT_NS_1MS;
+}
+
+
+RTDECL(PRTTIMESPEC) RTTimeNow(PRTTIMESPEC pTime)
+{
+#if MAC_OS_X_VERSION_MIN_REQUIRED < 1060
+    uint32_t        uSecs;
+    uint32_t        uNanosecs;
+#else
+    clock_sec_t     uSecs;
+    clock_nsec_t    uNanosecs;
+#endif
+    clock_get_calendar_nanotime(&uSecs, &uNanosecs);
+    return RTTimeSpecSetNano(pTime, (int64_t)uSecs * RT_NS_1SEC + uNanosecs);
+}
+