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715f6251 | 1 | /* |
2 | * This file is part of the SPL: Solaris Porting Layer. | |
3 | * | |
4 | * Copyright (c) 2008 Lawrence Livermore National Security, LLC. | |
5 | * Produced at Lawrence Livermore National Laboratory | |
6 | * Written by: | |
7 | * Brian Behlendorf <behlendorf1@llnl.gov>, | |
8 | * Herb Wartens <wartens2@llnl.gov>, | |
9 | * Jim Garlick <garlick@llnl.gov> | |
10 | * UCRL-CODE-235197 | |
11 | * | |
12 | * This is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This is distributed in the hope that it will be useful, but WITHOUT | |
18 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
19 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
20 | * for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License along | |
23 | * with this program; if not, write to the Free Software Foundation, Inc., | |
24 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
25 | */ | |
26 | ||
ee476682 | 27 | #include <sys/sysmacros.h> |
28 | #include <sys/time.h> | |
ee476682 | 29 | |
937879f1 | 30 | #ifdef DEBUG_SUBSYSTEM |
31 | #undef DEBUG_SUBSYSTEM | |
32 | #endif | |
33 | ||
34 | #define DEBUG_SUBSYSTEM S_TIME | |
35 | ||
ee476682 | 36 | void |
37 | __gethrestime(timestruc_t *ts) | |
38 | { | |
39 | getnstimeofday((struct timespec *)ts); | |
40 | } | |
ee476682 | 41 | EXPORT_SYMBOL(__gethrestime); |
79b31f36 | 42 | |
43 | int | |
44 | __clock_gettime(clock_type_t type, timespec_t *tp) | |
45 | { | |
46 | /* Only support CLOCK_REALTIME+__CLOCK_REALTIME0 for now */ | |
937879f1 | 47 | ASSERT((type == CLOCK_REALTIME) || (type == __CLOCK_REALTIME0)); |
79b31f36 | 48 | |
49 | getnstimeofday(tp); | |
50 | return 0; | |
51 | } | |
52 | EXPORT_SYMBOL(__clock_gettime); | |
53 | ||
54 | /* This function may not be as fast as using monotonic_clock() but it | |
55 | * should be much more portable, if performance becomes as issue we can | |
56 | * look at using monotonic_clock() for x86_64 and x86 arches. | |
57 | */ | |
58 | hrtime_t | |
59 | __gethrtime(void) { | |
60 | timespec_t tv; | |
61 | hrtime_t rc; | |
62 | ||
63 | do_posix_clock_monotonic_gettime(&tv); | |
64 | rc = (NSEC_PER_SEC * (hrtime_t)tv.tv_sec) + (hrtime_t)tv.tv_nsec; | |
65 | ||
66 | return rc; | |
67 | } | |
68 | EXPORT_SYMBOL(__gethrtime); | |
ff449ac4 | 69 | |
6a6cafbe | 70 | /* set_normalized_timespec() API changes |
71 | * 2.6.0 - 2.6.15: Inline function provided by linux/time.h | |
72 | * 2.6.16 - 2.6.25: Function prototypedefined but not exported | |
73 | * 2.6.26 - 2.6.x: Function defined and exported | |
ff449ac4 | 74 | */ |
6a6cafbe | 75 | #if !defined(HAVE_SET_NORMALIZED_TIMESPEC_INLINE) && \ |
76 | !defined(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT) | |
ff449ac4 | 77 | void |
78 | set_normalized_timespec(struct timespec *ts, time_t sec, long nsec) | |
79 | { | |
80 | while (nsec >= NSEC_PER_SEC) { | |
81 | nsec -= NSEC_PER_SEC; | |
82 | ++sec; | |
83 | } | |
84 | while (nsec < 0) { | |
85 | nsec += NSEC_PER_SEC; | |
86 | --sec; | |
87 | } | |
88 | ts->tv_sec = sec; | |
89 | ts->tv_nsec = nsec; | |
90 | } | |
91 | EXPORT_SYMBOL(set_normalized_timespec); | |
6a6cafbe | 92 | #endif |