time.h

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    1 /*
    2  *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
    3  *  Copyright (C) 2007 The Regents of the University of California.
    4  *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
    5  *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
    6  *  UCRL-CODE-235197
    7  *
    8  *  This file is part of the SPL, Solaris Porting Layer.
    9  *
   10  *  The SPL is free software; you can redistribute it and/or modify it
   11  *  under the terms of the GNU General Public License as published by the
   12  *  Free Software Foundation; either version 2 of the License, or (at your
   13  *  option) any later version.
   14  *
   15  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
   16  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   17  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   18  *  for more details.
   19  *
   20  *  You should have received a copy of the GNU General Public License along
   21  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
   22  */
   23 
   24 #ifndef _SPL_TIME_H
   25 #define _SPL_TIME_H
   26 
   27 #include <linux/module.h>
   28 #include <linux/time.h>
   29 #include <sys/types.h>
   30 #include <sys/timer.h>
   31 
   32 #if defined(CONFIG_64BIT)
   33 #define TIME_MAX                        INT64_MAX
   34 #define TIME_MIN                        INT64_MIN
   35 #else
   36 #define TIME_MAX                        INT32_MAX
   37 #define TIME_MIN                        INT32_MIN
   38 #endif
   39 
   40 #define SEC                             1
   41 #define MILLISEC                        1000
   42 #define MICROSEC                        1000000
   43 #define NANOSEC                         1000000000
   44 
   45 #define MSEC2NSEC(m)    ((hrtime_t)(m) * (NANOSEC / MILLISEC))
   46 #define NSEC2MSEC(n)    ((n) / (NANOSEC / MILLISEC))
   47 
   48 #define USEC2NSEC(m)    ((hrtime_t)(m) * (NANOSEC / MICROSEC))
   49 #define NSEC2USEC(n)    ((n) / (NANOSEC / MICROSEC))
   50 
   51 #define NSEC2SEC(n)     ((n) / (NANOSEC / SEC))
   52 #define SEC2NSEC(m)     ((hrtime_t)(m) * (NANOSEC / SEC))
   53 
   54 static const int hz = HZ;
   55 
   56 typedef longlong_t              hrtime_t;
   57 typedef struct timespec         timespec_t;
   58 
   59 #define TIMESPEC_OVERFLOW(ts)           \
   60         ((ts)->tv_sec < TIME_MIN || (ts)->tv_sec > TIME_MAX)
   61 
   62 #if defined(HAVE_INODE_TIMESPEC64_TIMES)
   63 typedef struct timespec64       inode_timespec_t;
   64 #else
   65 typedef struct timespec         inode_timespec_t;
   66 #endif
   67 
   68 /* Include for Lustre compatibility */
   69 #define timestruc_t     inode_timespec_t
   70 
   71 static inline void
   72 gethrestime(inode_timespec_t *ts)
   73 {
   74 #if defined(HAVE_INODE_TIMESPEC64_TIMES)
   75 
   76 #if defined(HAVE_KTIME_GET_COARSE_REAL_TS64)
   77         ktime_get_coarse_real_ts64(ts);
   78 #else
   79         *ts = current_kernel_time64();
   80 #endif /* HAVE_KTIME_GET_COARSE_REAL_TS64 */
   81 
   82 #else
   83         *ts = current_kernel_time();
   84 #endif
   85 }
   86 
   87 static inline uint64_t
   88 gethrestime_sec(void)
   89 {
   90 #if defined(HAVE_INODE_TIMESPEC64_TIMES)
   91 #if defined(HAVE_KTIME_GET_COARSE_REAL_TS64)
   92         inode_timespec_t ts;
   93         ktime_get_coarse_real_ts64(&ts);
   94 #else
   95         inode_timespec_t ts = current_kernel_time64();
   96 #endif  /* HAVE_KTIME_GET_COARSE_REAL_TS64 */
   97 
   98 #else
   99         inode_timespec_t ts = current_kernel_time();
  100 #endif
  101         return (ts.tv_sec);
  102 }
  103 
  104 static inline hrtime_t
  105 gethrtime(void)
  106 {
  107 #if defined(HAVE_KTIME_GET_RAW_TS64)
  108         struct timespec64 ts;
  109         ktime_get_raw_ts64(&ts);
  110 #else
  111         struct timespec ts;
  112         getrawmonotonic(&ts);
  113 #endif
  114         return (((hrtime_t)ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec);
  115 }
  116 
  117 #endif  /* _SPL_TIME_H */

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/include/os/linux/spl/sys/time.h

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/os/linux/spl/sys/time.h