91 lines
2.2 KiB
C++
91 lines
2.2 KiB
C++
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#include<hgl/platform/Platform.h>
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#include<hgl/TypeFunc.h>
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namespace hgl
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{
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namespace
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{
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#define APR_DELTA_EPOCH_IN_USEC 11644473600000000 //转Windows时间到Unix时间的一个差值
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//Windows是1601.1.1
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//Unix是1970.1.1
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//tanks for APR
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static inline void FileTimeToMicroTime(uint64 *result, FILETIME *input)
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{
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/* Convert FILETIME one 64 bit number so we can work with it. */
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*result = input->dwHighDateTime;
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*result = (*result) << 32;
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*result |= input->dwLowDateTime;
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*result /= 10; /* Convert from 100 nano-sec periods to micro-seconds. */
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*result -= APR_DELTA_EPOCH_IN_USEC; /* Convert from Windows epoch to Unix epoch */
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return;
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}
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}//namespace
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long GetGMTOff()
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{
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SYSTEMTIME st;
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FILETIME ft;
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uint64 local_time;
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uint64 utc_time;
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GetLocalTime(&st);
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SystemTimeToFileTime(&st, &ft);
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FileTimeToMicroTime(&local_time, &ft);
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GetSystemTime(&st);
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SystemTimeToFileTime(&st, &ft);
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FileTimeToMicroTime(&utc_time, &ft);
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return(utc_time - local_time);
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}
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/**
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* 取得当前时间
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* @return 当前时间(单位：百万分之一秒)
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*/
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uint64 GetMicroTime()
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{
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SYSTEMTIME st;
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FILETIME ft;
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uint64 result;
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GetLocalTime(&st);
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SystemTimeToFileTime(&st, &ft);
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FileTimeToMicroTime(&result, &ft);
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return(result);
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}
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/**
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* 取得当前时间
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* @return 当前时间(单位：千分之一秒)
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*/
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uint64 GetTime()
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{
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return(GetMicroTime() / 1000);
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}
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/**
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* 取得当前时间(双精度)
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* @return 当前时间(单位：秒)
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*/
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double GetDoubleTime() ///<取得当前时间(双精度，单位秒)
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{
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return(double(GetMicroTime()) / HGL_MICRO_SEC_PER_SEC);
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}
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/**
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* 等待指定时间
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* @param time 时间(单位：秒)
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*/
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void WaitTime(double t)
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{
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if(t<=0)return;
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::Sleep(DWORD(t*HGL_MILLI_SEC_PRE_SEC));
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}
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}//namespace hgl
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