| 1 | /* $Id: time-r0drv-darwin.cpp 52822 2014-09-23 10:25:34Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Time, Ring-0 Driver, Darwin.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2014 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 |
|
|---|
| 28 | /*******************************************************************************
|
|---|
| 29 | * Header Files *
|
|---|
| 30 | *******************************************************************************/
|
|---|
| 31 | #define LOG_GROUP RTLOGGROUP_TIME
|
|---|
| 32 | #include "the-darwin-kernel.h"
|
|---|
| 33 | #include "internal/iprt.h"
|
|---|
| 34 | #include <iprt/time.h>
|
|---|
| 35 |
|
|---|
| 36 | #include <iprt/asm.h>
|
|---|
| 37 |
|
|---|
| 38 |
|
|---|
| 39 | DECLINLINE(uint64_t) rtTimeGetSystemNanoTS(void)
|
|---|
| 40 | {
|
|---|
| 41 | static int8_t s_fSimple = -1;
|
|---|
| 42 |
|
|---|
| 43 | /* first call: check if life is simple or not. */
|
|---|
| 44 | if (s_fSimple < 0)
|
|---|
| 45 | {
|
|---|
| 46 | struct mach_timebase_info Info;
|
|---|
| 47 | clock_timebase_info(&Info);
|
|---|
| 48 | ASMAtomicXchgS8((int8_t * volatile)&s_fSimple, Info.denom == 1 && Info.numer == 1);
|
|---|
| 49 | }
|
|---|
| 50 |
|
|---|
| 51 | /* special case: absolute time is in nanoseconds */
|
|---|
| 52 | if (s_fSimple)
|
|---|
| 53 | return mach_absolute_time();
|
|---|
| 54 |
|
|---|
| 55 | /* general case: let mach do the mult/div for us. */
|
|---|
| 56 | uint64_t u64;
|
|---|
| 57 | absolutetime_to_nanoseconds(mach_absolute_time(), &u64);
|
|---|
| 58 | return u64;
|
|---|
| 59 | }
|
|---|
| 60 |
|
|---|
| 61 |
|
|---|
| 62 | RTDECL(uint64_t) RTTimeNanoTS(void)
|
|---|
| 63 | {
|
|---|
| 64 | return rtTimeGetSystemNanoTS();
|
|---|
| 65 | }
|
|---|
| 66 |
|
|---|
| 67 |
|
|---|
| 68 | RTDECL(uint64_t) RTTimeMilliTS(void)
|
|---|
| 69 | {
|
|---|
| 70 | return rtTimeGetSystemNanoTS() / RT_NS_1MS;
|
|---|
| 71 | }
|
|---|
| 72 |
|
|---|
| 73 |
|
|---|
| 74 | RTDECL(uint64_t) RTTimeSystemNanoTS(void)
|
|---|
| 75 | {
|
|---|
| 76 | return rtTimeGetSystemNanoTS();
|
|---|
| 77 | }
|
|---|
| 78 |
|
|---|
| 79 |
|
|---|
| 80 | RTDECL(uint64_t) RTTimeSystemMilliTS(void)
|
|---|
| 81 | {
|
|---|
| 82 | return rtTimeGetSystemNanoTS() / RT_NS_1MS;
|
|---|
| 83 | }
|
|---|
| 84 |
|
|---|
| 85 |
|
|---|
| 86 | RTDECL(PRTTIMESPEC) RTTimeNow(PRTTIMESPEC pTime)
|
|---|
| 87 | {
|
|---|
| 88 | #if MAC_OS_X_VERSION_MIN_REQUIRED < 1060
|
|---|
| 89 | uint32_t uSecs;
|
|---|
| 90 | uint32_t uNanosecs;
|
|---|
| 91 | #else
|
|---|
| 92 | clock_sec_t uSecs;
|
|---|
| 93 | clock_nsec_t uNanosecs;
|
|---|
| 94 | #endif
|
|---|
| 95 | clock_get_calendar_nanotime(&uSecs, &uNanosecs);
|
|---|
| 96 | return RTTimeSpecSetNano(pTime, (uint64_t)uSecs * RT_NS_1SEC + uNanosecs);
|
|---|
| 97 | }
|
|---|
| 98 |
|
|---|
