1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see [sun.com URL with a
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * libcfs/include/libcfs/winnt/winnt-time.h
38 * Implementation of portable time API for Winnt (kernel and user-level).
41 #ifndef __LIBCFS_WINNT_LINUX_TIME_H__
42 #define __LIBCFS_WINNT_LINUX_TIME_H__
44 #ifndef __LIBCFS_LIBCFS_H__
45 #error Do not #include this file directly. #include <libcfs/libcfs.h> instead
48 /* Portable time API */
51 * Platform provides three opaque data-types:
53 * cfs_time_t represents point in time. This is internal kernel
54 * time rather than "wall clock". This time bears no
55 * relation to gettimeofday().
57 * cfs_duration_t represents time interval with resolution of internal
60 * cfs_fs_time_t represents instance in world-visible time. This is
61 * used in file-system time-stamps
63 * cfs_time_t cfs_time_current(void);
64 * cfs_time_t cfs_time_add (cfs_time_t, cfs_duration_t);
65 * cfs_duration_t cfs_time_sub (cfs_time_t, cfs_time_t);
66 * int cfs_time_before (cfs_time_t, cfs_time_t);
67 * int cfs_time_beforeq(cfs_time_t, cfs_time_t);
69 * cfs_duration_t cfs_duration_build(int64_t);
71 * time_t cfs_duration_sec (cfs_duration_t);
72 * void cfs_duration_usec(cfs_duration_t, struct timeval *);
73 * void cfs_duration_nsec(cfs_duration_t, struct timespec *);
75 * void cfs_fs_time_current(cfs_fs_time_t *);
76 * time_t cfs_fs_time_sec (cfs_fs_time_t *);
77 * void cfs_fs_time_usec (cfs_fs_time_t *, struct timeval *);
78 * void cfs_fs_time_nsec (cfs_fs_time_t *, struct timespec *);
79 * int cfs_fs_time_before (cfs_fs_time_t *, cfs_fs_time_t *);
80 * int cfs_fs_time_beforeq(cfs_fs_time_t *, cfs_fs_time_t *);
87 #define ONE_BILLION ((u_int64_t)1000000000)
88 #define ONE_MILLION ((u_int64_t) 1000000)
93 time_t tv_sec; /* seconds */
94 suseconds_t tv_usec; /* microseconds */
104 #include <libcfs/winnt/portals_compat25.h>
107 * Generic kernel stuff
110 typedef struct timeval cfs_fs_time_t;
112 typedef u_int64_t cfs_time_t;
113 typedef int64_t cfs_duration_t;
115 static inline void do_gettimeofday(struct timeval *tv)
119 KeQuerySystemTime(&Time);
121 tv->tv_sec = (long_ptr) (Time.QuadPart / 10000000);
122 tv->tv_usec = (long_ptr) (Time.QuadPart % 10000000) / 10;
125 static inline cfs_time_t JIFFIES()
128 LARGE_INTEGER Elapse;
130 KeQueryTickCount(&Tick);
132 Elapse.QuadPart = Tick.QuadPart * KeQueryTimeIncrement();
133 Elapse.QuadPart /= (10000000 / HZ);
135 return Elapse.QuadPart;
138 static inline cfs_time_t cfs_time_current(void)
143 static inline cfs_time_t cfs_time_current_sec(void)
145 return (JIFFIES() / HZ);
148 static inline cfs_time_t cfs_time_add(cfs_time_t t, cfs_duration_t d)
153 static inline cfs_duration_t cfs_time_sub(cfs_time_t t1, cfs_time_t t2)
158 static inline int cfs_time_before(cfs_time_t t1, cfs_time_t t2)
160 return ((int64_t)t1 - (int64_t)t2) < 0;
163 static inline int cfs_time_beforeq(cfs_time_t t1, cfs_time_t t2)
165 return ((int64_t)t1 - (int64_t)t2) <= 0;
168 static inline void cfs_fs_time_current(cfs_fs_time_t *t)
173 KeQuerySystemTime(&Sys);
175 RtlTimeToSecondsSince1970(&Sys, &Linux);
178 t->tv_usec = (Sys.LowPart % 10000000) / 10;
181 static inline cfs_time_t cfs_fs_time_sec(cfs_fs_time_t *t)
186 static inline u_int64_t __cfs_fs_time_flat(cfs_fs_time_t *t)
188 return ((u_int64_t)t->tv_sec) * ONE_MILLION + t->tv_usec;
191 static inline int cfs_fs_time_before(cfs_fs_time_t *t1, cfs_fs_time_t *t2)
193 return (__cfs_fs_time_flat(t1) < __cfs_fs_time_flat(t2));
196 static inline int cfs_fs_time_beforeq(cfs_fs_time_t *t1, cfs_fs_time_t *t2)
198 return (__cfs_fs_time_flat(t1) <= __cfs_fs_time_flat(t2));
201 static inline cfs_duration_t cfs_time_seconds(int seconds)
203 return (cfs_duration_t)seconds * HZ;
206 static inline cfs_time_t cfs_duration_sec(cfs_duration_t d)
211 static inline void cfs_duration_usec(cfs_duration_t d, struct timeval *s)
213 s->tv_sec = (suseconds_t) (d / HZ);
214 s->tv_usec = (time_t)((d - (cfs_duration_t)s->tv_sec * HZ) *
218 static inline void cfs_duration_nsec(cfs_duration_t d, struct timespec *s)
220 s->tv_sec = (suseconds_t) (d / HZ);
221 s->tv_nsec = (time_t)((d - (cfs_duration_t)s->tv_sec * HZ) *
225 static inline void cfs_fs_time_usec(cfs_fs_time_t *t, struct timeval *v)
230 static inline void cfs_fs_time_nsec(cfs_fs_time_t *t, struct timespec *s)
232 s->tv_sec = t->tv_sec;
233 s->tv_nsec = t->tv_usec * 1000;
236 #define cfs_time_current_64 cfs_time_current
237 #define cfs_time_add_64 cfs_time_add
238 #define cfs_time_shift_64 cfs_time_shift
239 #define cfs_time_before_64 cfs_time_before
240 #define cfs_time_beforeq_64 cfs_time_beforeq
247 #define LTIME_S(t) (t)
249 #define CFS_TIME_T "%I64u"
250 #define CFS_DURATION_T "%I64d"
252 #else /* !__KERNEL__ */
255 * Liblustre. time(2) based implementation.
257 #include <libcfs/user-time.h>
268 OUT PLARGE_INTEGER CurrentTime
275 RtlTimeToSecondsSince1970(
276 IN PLARGE_INTEGER Time,
277 OUT PULONG ElapsedSeconds
284 RtlSecondsSince1970ToTime(
285 IN ULONG ElapsedSeconds,
286 OUT PLARGE_INTEGER Time
293 DWORD dwMilliseconds // sleep time in milliseconds
297 static inline void sleep(int time)
299 DWORD Time = 1000 * time;
304 static inline void do_gettimeofday(struct timeval *tv)
308 NtQuerySystemTime(&Time);
310 tv->tv_sec = (long_ptr) (Time.QuadPart / 10000000);
311 tv->tv_usec = (long_ptr) (Time.QuadPart % 10000000) / 10;
314 static inline int gettimeofday(struct timeval *tv, void * tz)
320 #endif /* __KERNEL__ */
322 /* __LIBCFS_LINUX_LINUX_TIME_H__ */
326 * c-indentation-style: "K&R"