include/sys/time_impl.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 http://www.opensolaris.org/os/licensing.
  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 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*
  28  * Implementation-private.  This header should not be included
  29  * directly by an application.  The application should instead
  30  * include <time.h> which includes this header conditionally
  31  * depending on which feature test macros are defined. By default,
  32  * this header is included by <time.h>.  X/Open and POSIX
  33  * standards requirements result in this header being included
  34  * by <time.h> only under a restricted set of conditions.
  35  */
  36
  37 #ifndef _SYS_TIME_IMPL_H
  38 #define _SYS_TIME_IMPL_H
  39
  40 #include <sys/feature_tests.h>
  41
  42 #ifdef  __cplusplus
  43 extern "C" {
  44 #endif
  45
  46 #ifndef _ASM
  47
  48 #if !defined(_TIME_T) || __cplusplus >= 199711L
  49 #define _TIME_T
  50 typedef long    time_t;         /* time of day in seconds */
  51 #endif  /* _TIME_T */
  52
  53 /*
  54  * Time expressed in seconds and nanoseconds
  55  */
  56
  57 typedef struct  timespec {              /* definition per POSIX.4 */
  58         time_t          tv_sec;         /* seconds */
  59         long            tv_nsec;        /* and nanoseconds */
  60 } timespec_t;
  61
  62 #if defined(_SYSCALL32)
  63
  64 #include <sys/types32.h>
  65
  66 #define TIMESPEC32_TO_TIMESPEC(ts, ts32)        {       \
  67         (ts)->tv_sec = (time_t)(ts32)->tv_sec;          \
  68         (ts)->tv_nsec = (ts32)->tv_nsec;                \
  69 }
  70
  71 #define TIMESPEC_TO_TIMESPEC32(ts32, ts)        {       \
  72         (ts32)->tv_sec = (time32_t)(ts)->tv_sec;        \
  73         (ts32)->tv_nsec = (ts)->tv_nsec;                \
  74 }
  75
  76 #define TIMESPEC_OVERFLOW(ts)           \
  77         ((ts)->tv_sec < TIME32_MIN || (ts)->tv_sec > TIME32_MAX)
  78
  79 #endif  /* _SYSCALL32 */
  80
  81 typedef struct timespec timestruc_t;    /* definition per SVr4 */
  82
  83 /*
  84  * The following has been left in for backward compatibility. Portable
  85  * applications should not use the structure name timestruc.
  86  */
  87
  88 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
  89 #define timestruc       timespec        /* structure name per SVr4 */
  90 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
  91
  92 /*
  93  * Timer specification
  94  */
  95 typedef struct itimerspec {             /* definition per POSIX.4 */
  96         struct timespec it_interval;    /* timer period */
  97         struct timespec it_value;       /* timer expiration */
  98 } itimerspec_t;
  99
 100 #if defined(_SYSCALL32)
 101
 102 #define ITIMERSPEC32_TO_ITIMERSPEC(it, it32)    {       \
 103         TIMESPEC32_TO_TIMESPEC(&(it)->it_interval, &(it32)->it_interval); \
 104         TIMESPEC32_TO_TIMESPEC(&(it)->it_value, &(it32)->it_value);     \
 105 }
 106
 107 #define ITIMERSPEC_TO_ITIMERSPEC32(it32, it)    {       \
 108         TIMESPEC_TO_TIMESPEC32(&(it32)->it_interval, &(it)->it_interval); \
 109         TIMESPEC_TO_TIMESPEC32(&(it32)->it_value, &(it)->it_value);     \
 110 }
 111
 112 #define ITIMERSPEC_OVERFLOW(it)                         \
 113         (TIMESPEC_OVERFLOW(&(it)->it_interval) &&       \
 114         TIMESPEC_OVERFLOW(&(it)->it_value))
 115
 116 #endif  /* _SYSCALL32 */
 117
 118 #endif  /* _ASM */
 119
 120 #define __CLOCK_REALTIME0       0       /* obsolete; same as CLOCK_REALTIME */
 121 #define CLOCK_VIRTUAL           1       /* thread's user-level CPU clock */
 122 #define CLOCK_THREAD_CPUTIME_ID 2       /* thread's user+system CPU clock */
 123 #define CLOCK_REALTIME          3       /* wall clock */
 124 #define CLOCK_MONOTONIC         4       /* high resolution monotonic clock */
 125 #define CLOCK_PROCESS_CPUTIME_ID 5      /* process's user+system CPU clock */
 126 #define CLOCK_HIGHRES           CLOCK_MONOTONIC         /* alternate name */
 127 #define CLOCK_PROF              CLOCK_THREAD_CPUTIME_ID /* alternate name */
 128
 129 #ifdef _KERNEL
 130 #define CLOCK_MAX               6
 131 #endif
 132
 133 #define TIMER_RELTIME   0x0             /* set timer relative */
 134 #define TIMER_ABSTIME   0x1             /* set timer absolute */
 135
 136 #ifdef  __cplusplus
 137 }
 138 #endif
 139
 140 #endif  /* _SYS_TIME_IMPL_H */