include/sys/time.h

   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  *  For details, see <http://github.com/behlendorf/spl/>.
  10  *
  11  *  The SPL is free software; you can redistribute it and/or modify it
  12  *  under the terms of the GNU General Public License as published by the
  13  *  Free Software Foundation; either version 2 of the License, or (at your
  14  *  option) any later version.
  15  *
  16  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  17  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19  *  for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License along
  22  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  23 \*****************************************************************************/
  24
  25 #ifndef _SPL_TIME_H
  26 #define _SPL_TIME_H
  27
  28 /*
  29  * Structure returned by gettimeofday(2) system call,
  30  * and used in other calls.
  31  */
  32 #include <linux/module.h>
  33 #include <linux/time.h>
  34 #include <sys/types.h>
  35 #include <sys/timer.h>
  36
  37 #define TIME32_MAX                      INT32_MAX
  38 #define TIME32_MIN                      INT32_MIN
  39
  40 #define SEC                             1
  41 #define MILLISEC                        1000
  42 #define MICROSEC                        1000000
  43 #define NANOSEC                         1000000000
  44
  45 /* Already defined in include/linux/time.h */
  46 #undef CLOCK_THREAD_CPUTIME_ID
  47 #undef CLOCK_REALTIME
  48 #undef CLOCK_MONOTONIC
  49 #undef CLOCK_PROCESS_CPUTIME_ID
  50
  51 typedef enum clock_type {
  52         __CLOCK_REALTIME0 =             0,      /* obsolete; same as CLOCK_REALTIME */
  53         CLOCK_VIRTUAL =                 1,      /* thread's user-level CPU clock */
  54         CLOCK_THREAD_CPUTIME_ID =       2,      /* thread's user+system CPU clock */
  55         CLOCK_REALTIME =                3,      /* wall clock */
  56         CLOCK_MONOTONIC =               4,      /* high resolution monotonic clock */
  57         CLOCK_PROCESS_CPUTIME_ID =      5,      /* process's user+system CPU clock */
  58         CLOCK_HIGHRES =                 CLOCK_MONOTONIC,        /* alternate name */
  59         CLOCK_PROF =                    CLOCK_THREAD_CPUTIME_ID,/* alternate name */
  60 } clock_type_t;
  61
  62 #define hz                                      \
  63 ({                                              \
  64         ASSERT(HZ >= 100 && HZ <= MICROSEC);    \
  65         HZ;                                     \
  66 })
  67
  68 extern void __gethrestime(timestruc_t *);
  69 extern int __clock_gettime(clock_type_t, timespec_t *);
  70 extern hrtime_t __gethrtime(void);
  71
  72 #define gethrestime(ts)                 __gethrestime(ts)
  73 #define clock_gettime(fl, tp)           __clock_gettime(fl, tp)
  74 #define gethrtime()                     __gethrtime()
  75
  76 static __inline__ time_t
  77 gethrestime_sec(void)
  78 {
  79         timestruc_t now;
  80
  81         __gethrestime(&now);
  82         return now.tv_sec;
  83 }
  84
  85 #endif  /* _SPL_TIME_H */