Mercurial > hg > Members > anatofuz > MoarVM

annotate src/platform/win32/time.c @ 64:da6d6597bd69 default tip

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author anatofuz <anatofuz@cr.ie.u-ryukyu.ac.jp>
date Fri, 15 Feb 2019 20:51:54 +0900
parents 2cf249471370
children
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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1 #include "moar.h"
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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2 #include "platform/time.h"
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3
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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4 #include <windows.h>
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5
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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6 /* see http://support.microsoft.com/kb/167296 */
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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7 #define OFFSET 116444736000000000
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8
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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9 #define E6 1000000
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10
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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11 MVMuint64 MVM_platform_now(void)
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12 {
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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13 union { FILETIME ft; MVMuint64 u; } now;
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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14 GetSystemTimeAsFileTime(&now.ft);
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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15 return (now.u - OFFSET) * 100;
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16 }
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17
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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18 void MVM_platform_sleep(MVMnum64 second)
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19 {
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20
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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21 DWORD millis = (DWORD)(second * 1000);
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22
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23 Sleep(millis);
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24 }
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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26 void MVM_platform_nanosleep(MVMuint64 nanos)
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27 {
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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28 MVMuint64 now;
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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29 DWORD millis;
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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30 const MVMuint64 end = MVM_platform_now() + nanos;
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31
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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32 millis = (DWORD)((nanos + E6 - 1) / E6);
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33
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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34 while(1) {
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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35 Sleep(millis);
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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36 now = MVM_platform_now();
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37
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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38 if (now >= end)
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39 break;
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40
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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41 millis = (DWORD)((end - now) / E6);
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42 }
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43 }