1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/* $Id: time-r0drv-darwin.cpp $ */
/** @file
* IPRT - Time, Ring-0 Driver, Darwin.
*/
/*
* Copyright (C) 2006-2023 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);
}
|
