lib/libspl/include/sys/time.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or https://opensource.org/licenses/CDDL-1.0.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _LIBSPL_SYS_TIME_H
  28 #define _LIBSPL_SYS_TIME_H
  29
  30 #include <time.h>
  31 #include <sys/types.h>
  32 #include_next <sys/time.h>
  33
  34 #ifndef SEC
  35 #define SEC             1
  36 #endif
  37
  38 #ifndef MILLISEC
  39 #define MILLISEC        1000
  40 #endif
  41
  42 #ifndef MICROSEC
  43 #define MICROSEC        1000000
  44 #endif
  45
  46 #ifndef NANOSEC
  47 #define NANOSEC         1000000000
  48 #endif
  49
  50 #ifndef NSEC_PER_USEC
  51 #define NSEC_PER_USEC   1000L
  52 #endif
  53
  54 #ifndef MSEC2NSEC
  55 #define MSEC2NSEC(m)    ((hrtime_t)(m) * (NANOSEC / MILLISEC))
  56 #endif
  57
  58 #ifndef NSEC2MSEC
  59 #define NSEC2MSEC(n)    ((n) / (NANOSEC / MILLISEC))
  60 #endif
  61
  62 #ifndef USEC2NSEC
  63 #define USEC2NSEC(m)    ((hrtime_t)(m) * (NANOSEC / MICROSEC))
  64 #endif
  65
  66 #ifndef NSEC2USEC
  67 #define NSEC2USEC(n)    ((n) / (NANOSEC / MICROSEC))
  68 #endif
  69
  70 #ifndef NSEC2SEC
  71 #define NSEC2SEC(n)     ((n) / (NANOSEC / SEC))
  72 #endif
  73
  74 #ifndef SEC2NSEC
  75 #define SEC2NSEC(m)     ((hrtime_t)(m) * (NANOSEC / SEC))
  76 #endif
  77
  78 typedef long long               hrtime_t;
  79 typedef struct timespec         timespec_t;
  80 typedef struct timespec         inode_timespec_t;
  81
  82 static inline void
  83 gethrestime(inode_timespec_t *ts)
  84 {
  85         struct timeval tv;
  86         (void) gettimeofday(&tv, NULL);
  87         ts->tv_sec = tv.tv_sec;
  88         ts->tv_nsec = tv.tv_usec * NSEC_PER_USEC;
  89 }
  90
  91 static inline uint64_t
  92 gethrestime_sec(void)
  93 {
  94         struct timeval tv;
  95         (void) gettimeofday(&tv, NULL);
  96         return (tv.tv_sec);
  97 }
  98
  99 static inline hrtime_t
 100 gethrtime(void)
 101 {
 102         struct timespec ts;
 103         (void) clock_gettime(CLOCK_MONOTONIC, &ts);
 104         return ((((uint64_t)ts.tv_sec) * NANOSEC) + ts.tv_nsec);
 105 }
 106
 107 #endif /* _LIBSPL_SYS_TIME_H */