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
|
/*****************************************************************************\
* 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://zfsonlinux.org/>.
*
* 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/>.
\*****************************************************************************/
#ifndef _SPL_TIME_H
#define _SPL_TIME_H
/*
* Structure returned by gettimeofday(2) system call,
* and used in other calls.
*/
#include <linux/module.h>
#include <linux/time.h>
#include <sys/types.h>
#include <sys/timer.h>
#if defined(CONFIG_64BIT)
#define TIME_MAX INT64_MAX
#define TIME_MIN INT64_MIN
#else
#define TIME_MAX INT32_MAX
#define TIME_MIN INT32_MIN
#endif
#define SEC 1
#define MILLISEC 1000
#define MICROSEC 1000000
#define NANOSEC 1000000000
#define MSEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MILLISEC))
#define NSEC2MSEC(n) ((n) / (NANOSEC / MILLISEC))
/* Already defined in include/linux/time.h */
#undef CLOCK_THREAD_CPUTIME_ID
#undef CLOCK_REALTIME
#undef CLOCK_MONOTONIC
#undef CLOCK_PROCESS_CPUTIME_ID
typedef enum clock_type {
__CLOCK_REALTIME0 = 0, /* obsolete; same as CLOCK_REALTIME */
CLOCK_VIRTUAL = 1, /* thread's user-level CPU clock */
CLOCK_THREAD_CPUTIME_ID = 2, /* thread's user+system CPU clock */
CLOCK_REALTIME = 3, /* wall clock */
CLOCK_MONOTONIC = 4, /* high resolution monotonic clock */
CLOCK_PROCESS_CPUTIME_ID = 5, /* process's user+system CPU clock */
CLOCK_HIGHRES = CLOCK_MONOTONIC, /* alternate name */
CLOCK_PROF = CLOCK_THREAD_CPUTIME_ID,/* alternate name */
} clock_type_t;
#define hz \
({ \
ASSERT(HZ >= 100 && HZ <= MICROSEC); \
HZ; \
})
extern void __gethrestime(timestruc_t *);
extern int __clock_gettime(clock_type_t, timespec_t *);
extern hrtime_t __gethrtime(void);
#define gethrestime(ts) __gethrestime(ts)
#define clock_gettime(fl, tp) __clock_gettime(fl, tp)
#define gethrtime() __gethrtime()
static __inline__ time_t
gethrestime_sec(void)
{
timestruc_t now;
__gethrestime(&now);
return now.tv_sec;
}
#define TIMESPEC_OVERFLOW(ts) \
((ts)->tv_sec < TIME_MIN || (ts)->tv_sec > TIME_MAX)
#endif /* _SPL_TIME_H */
|
