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 #if defined(PIPE_OS_LINUX)
  42 #include <time.h> /* timeval */
  43 #include <unistd.h> /* usleep */
  44 #endif
  45
  46 #include "pipe/p_compiler.h"
  47
  48
  49 #ifdef  __cplusplus
  50 extern "C" {
  51 #endif
  52
  53
  54 /**
  55  * Time abstraction.
  56  *
  57  * Do not access this structure directly. Use the provided function instead.
  58  */
  59 struct util_time
  60 {
  61 #if defined(PIPE_OS_LINUX)
  62    struct timeval tv;
  63 #else
  64    int64_t counter;
  65 #endif
  66 };
  67
  68
  69 void
  70 util_time_get(struct util_time *t);
  71
  72 void
  73 util_time_add(const struct util_time *t1,
  74               int64_t usecs,
  75               struct util_time *t2);
  76
  77 uint64_t
  78 util_time_micros( void );
  79
  80 int64_t
  81 util_time_diff(const struct util_time *t1,
  82                const struct util_time *t2);
  83
  84 /**
  85  * Returns non-zero when the timeout expires.
  86  */
  87 boolean
  88 util_time_timeout(const struct util_time *start,
  89                   const struct util_time *end,
  90                   const struct util_time *curr);
  91
  92 #if defined(PIPE_OS_LINUX)
  93 #define util_time_sleep usleep
  94 #else
  95 void
  96 util_time_sleep(unsigned usecs);
  97 #endif
  98
  99
 100 #ifdef  __cplusplus
 101 }
 102 #endif
 103
 104 #endif /* U_TIME_H_ */