src/gallium/auxiliary/util/u_time.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /**
  29  * @file
  30  * OS independent time-manipulation functions.
  31  *
  32  * @author Jose Fonseca <jrfonseca@tungstengraphics.com>
  33  */
  34
  35 #ifndef U_TIME_H_
  36 #define U_TIME_H_
  37
  38
  39 #include "pipe/p_config.h"
  40
  41 #include "os/os_time.h"
  42
  43 #include "pipe/p_compiler.h"
  44
  45
  46 #ifdef  __cplusplus
  47 extern "C" {
  48 #endif
  49
  50
  51 /**
  52  * Time abstraction.
  53  *
  54  * Do not access this structure directly. Use the provided function instead.
  55  */
  56 struct util_time
  57 {
  58    int64_t counter;
  59 };
  60
  61
  62 PIPE_DEPRECATED
  63 static INLINE void
  64 util_time_get(struct util_time *t)
  65 {
  66    t->counter = os_time_get();
  67 }
  68
  69
  70 PIPE_DEPRECATED
  71 static INLINE void
  72 util_time_add(const struct util_time *t1,
  73               int64_t usecs,
  74               struct util_time *t2)
  75 {
  76    t2->counter = t1->counter + usecs;
  77 }
  78
  79
  80 PIPE_DEPRECATED
  81 static INLINE int64_t
  82 util_time_diff(const struct util_time *t1,
  83                const struct util_time *t2)
  84 {
  85    return t2->counter - t1->counter;
  86 }
  87
  88
  89 /**
  90  * Compare two time values.
  91  *
  92  * Not publicly available because it does not take in account wrap-arounds.
  93  * Use util_time_timeout instead.
  94  */
  95 static INLINE int
  96 _util_time_compare(const struct util_time *t1,
  97                    const struct util_time *t2)
  98 {
  99    if (t1->counter < t2->counter)
 100       return -1;
 101    else if(t1->counter > t2->counter)
 102       return 1;
 103    else
 104       return 0;
 105 }
 106
 107
 108 PIPE_DEPRECATED
 109 static INLINE boolean
 110 util_time_timeout(const struct util_time *start,
 111                   const struct util_time *end,
 112                   const struct util_time *curr)
 113 {
 114    return os_time_timeout(start->counter, end->counter, curr->counter);
 115 }
 116
 117
 118 PIPE_DEPRECATED
 119 static INLINE int64_t
 120 util_time_micros(void)
 121 {
 122    return os_time_get();
 123 }
 124
 125
 126 PIPE_DEPRECATED
 127 static INLINE void
 128 util_time_sleep(int64_t usecs)
 129 {
 130    os_time_sleep(usecs);
 131 }
 132
 133
 134 #ifdef  __cplusplus
 135 }
 136 #endif
 137
 138 #endif /* U_TIME_H_ */