blob: 6ef9b8fc8e1dbcfd0956380d909d01a4c4415719 (
plain)
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
|
/*****************************************************************************\
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
* Copyright (C) 2007 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
* UCRL-CODE-235197
*
* This file is part of the SPL, Solaris Porting Layer.
* For details, see <http://github.com/behlendorf/spl/>.
*
* The SPL 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; either version 2 of the License, or (at your
* option) any later version.
*
* The SPL 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 the SPL. If not, see <http://www.gnu.org/licenses/>.
*****************************************************************************
* Solaris Porting Layer (SPL) Time Implementation.
\*****************************************************************************/
#include <sys/sysmacros.h>
#include <sys/time.h>
#ifdef HAVE_MONOTONIC_CLOCK
extern unsigned long long monotonic_clock(void);
#endif
#ifdef DEBUG_SUBSYSTEM
#undef DEBUG_SUBSYSTEM
#endif
#define DEBUG_SUBSYSTEM S_TIME
void
__gethrestime(timestruc_t *ts)
{
struct timeval tv;
do_gettimeofday(&tv);
ts->tv_sec = tv.tv_sec;
ts->tv_nsec = tv.tv_usec * NSEC_PER_USEC;
}
EXPORT_SYMBOL(__gethrestime);
/* Use monotonic_clock() by default. It's faster and is available on older
* kernels, but few architectures have them, so we must fallback to
* do_posix_clock_monotonic_gettime().
*/
hrtime_t
__gethrtime(void) {
#ifdef HAVE_MONOTONIC_CLOCK
unsigned long long res = monotonic_clock();
/* Deal with signed/unsigned mismatch */
return (hrtime_t)(res & ~(1ULL << 63));
#else
struct timespec ts;
do_posix_clock_monotonic_gettime(&ts);
return (((hrtime_t)ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec);
#endif
}
EXPORT_SYMBOL(__gethrtime);
/* set_normalized_timespec() API changes
* 2.6.0 - 2.6.15: Inline function provided by linux/time.h
* 2.6.16 - 2.6.25: Function prototype defined but not exported
* 2.6.26 - 2.6.x: Function defined and exported
*/
#if !defined(HAVE_SET_NORMALIZED_TIMESPEC_INLINE) && \
!defined(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT)
void
set_normalized_timespec(struct timespec *ts, time_t sec, long nsec)
{
while (nsec >= NSEC_PER_SEC) {
nsec -= NSEC_PER_SEC;
++sec;
}
while (nsec < 0) {
nsec += NSEC_PER_SEC;
--sec;
}
ts->tv_sec = sec;
ts->tv_nsec = nsec;
}
EXPORT_SYMBOL(set_normalized_timespec);
#endif
|
