src/gallium/auxiliary/util/u_time.c

   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
  36 #include "pipe/p_config.h"
  37
  38 #if defined(PIPE_OS_LINUX)
  39 #include <sys/time.h>
  40 #elif defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
  41 #include <windows.h>
  42 #include <winddi.h>
  43 #elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
  44 #include <windows.h>
  45 extern VOID KeQuerySystemTime(PLARGE_INTEGER);
  46 #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER) || defined(PIPE_SUBSYSTEM_WINDOWS_CE)
  47 #include <windows.h>
  48 #else
  49 #error Unsupported OS
  50 #endif
  51
  52 #include "util/u_time.h"
  53
  54
  55 #if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY) || defined(PIPE_SUBSYSTEM_WINDOWS_USER) || defined(PIPE_SUBSYSTEM_WINDOWS_CE)
  56
  57 static int64_t frequency = 0;
  58
  59 static INLINE void
  60 util_time_get_frequency(void)
  61 {
  62    if(!frequency) {
  63 #if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
  64       LONGLONG temp;
  65       EngQueryPerformanceFrequency(&temp);
  66       frequency = temp;
  67 #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER) || defined(PIPE_SUBSYSTEM_WINDOWS_CE)
  68       LARGE_INTEGER temp;
  69       QueryPerformanceFrequency(&temp);
  70       frequency = temp.QuadPart;
  71 #endif
  72    }
  73 }
  74 #endif
  75
  76
  77 void
  78 util_time_get(struct util_time *t)
  79 {
  80 #if defined(PIPE_OS_LINUX)
  81    gettimeofday(&t->tv, NULL);
  82 #elif defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
  83    LONGLONG temp;
  84    EngQueryPerformanceCounter(&temp);
  85    t->counter = temp;
  86 #elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
  87    /* Updated every 10 miliseconds, measured in units of 100 nanoseconds.
  88     * http://msdn.microsoft.com/en-us/library/ms801642.aspx */
  89    LARGE_INTEGER temp;
  90    KeQuerySystemTime(&temp);
  91    t->counter = temp.QuadPart;
  92 #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER) || defined(PIPE_SUBSYSTEM_WINDOWS_CE)
  93    LARGE_INTEGER temp;
  94    QueryPerformanceCounter(&temp);
  95    t->counter = temp.QuadPart;
  96 #endif
  97 }
  98
  99
 100 void
 101 util_time_add(const struct util_time *t1,
 102               int64_t usecs,
 103               struct util_time *t2)
 104 {
 105 #if defined(PIPE_OS_LINUX)
 106    t2->tv.tv_sec = t1->tv.tv_sec + usecs / 1000000;
 107    t2->tv.tv_usec = t1->tv.tv_usec + usecs % 1000000;
 108 #elif defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY) || defined(PIPE_SUBSYSTEM_WINDOWS_USER) || defined(PIPE_SUBSYSTEM_WINDOWS_CE)
 109    util_time_get_frequency();
 110    t2->counter = t1->counter + (usecs * frequency + INT64_C(999999))/INT64_C(1000000);
 111 #elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
 112    /* 1 tick = 100 nano seconds. */
 113    t2->counter = t1->counter + usecs * 10;
 114 #elif
 115    LARGE_INTEGER temp;
 116    LONGLONG freq;
 117    freq = temp.QuadPart;
 118    t2->counter = t1->counter + (usecs * freq)/1000000L;
 119 #endif
 120 }
 121
 122
 123 int64_t
 124 util_time_diff(const struct util_time *t1,
 125                const struct util_time *t2)
 126 {
 127 #if defined(PIPE_OS_LINUX)
 128    return (t2->tv.tv_usec - t1->tv.tv_usec) +
 129           (t2->tv.tv_sec - t1->tv.tv_sec)*1000000;
 130 #elif defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY) || defined(PIPE_SUBSYSTEM_WINDOWS_USER) || defined(PIPE_SUBSYSTEM_WINDOWS_CE)
 131    util_time_get_frequency();
 132    return (t2->counter - t1->counter)*INT64_C(1000000)/frequency;
 133 #elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
 134    return (t2->counter - t1->counter)/10;
 135 #endif
 136 }
 137
 138
 139 /**
 140  * Compare two time values.
 141  *
 142  * Not publicly available because it does not take in account wrap-arounds.
 143  * Use util_time_timeout instead.
 144  */
 145 static INLINE int
 146 util_time_compare(const struct util_time *t1,
 147                   const struct util_time *t2)
 148 {
 149 #if defined(PIPE_OS_LINUX)
 150    if (t1->tv.tv_sec < t2->tv.tv_sec)
 151       return -1;
 152    else if(t1->tv.tv_sec > t2->tv.tv_sec)
 153       return 1;
 154    else if (t1->tv.tv_usec < t2->tv.tv_usec)
 155       return -1;
 156    else if(t1->tv.tv_usec > t2->tv.tv_usec)
 157       return 1;
 158    else
 159       return 0;
 160 #elif defined(PIPE_OS_WINDOWS)
 161    if (t1->counter < t2->counter)
 162       return -1;
 163    else if(t1->counter > t2->counter)
 164       return 1;
 165    else
 166       return 0;
 167 #endif
 168 }
 169
 170
 171 boolean
 172 util_time_timeout(const struct util_time *start,
 173                   const struct util_time *end,
 174                   const struct util_time *curr)
 175 {
 176    if(util_time_compare(start, end) <= 0)
 177       return !(util_time_compare(start, curr) <= 0 && util_time_compare(curr, end) < 0);
 178    else
 179       return !(util_time_compare(start, curr) <= 0 || util_time_compare(curr, end) < 0);
 180 }
 181
 182
 183 #if defined(PIPE_SUBSYSYEM_WINDOWS_DISPLAY)
 184 void util_time_sleep(unsigned usecs)
 185 {
 186    LONGLONG start, curr, end;
 187
 188    EngQueryPerformanceCounter(&start);
 189
 190    if(!frequency)
 191       EngQueryPerformanceFrequency(&frequency);
 192
 193    end = start + (usecs * frequency + 999999LL)/1000000LL;
 194
 195    do {
 196       EngQueryPerformanceCounter(&curr);
 197    } while(start <= curr && curr < end ||
 198            end < start && (curr < end || start <= curr));
 199 }
 200 #endif