X-Git-Url: http://www.lcore.org/git/lcore.git/blobdiff_plain/9763940f8849e5c807566157829a1e6d2c9172ee..9951872c6c46881c8b414bcd04a18320c457b811:/btime.pas diff --git a/btime.pas b/btime.pas index 14b734e..ff77de9 100644 --- a/btime.pas +++ b/btime.pas @@ -138,7 +138,7 @@ end; function oletounix(t:tdatetime):tunixtimeint; begin - result := trunc(oletounixfloat(t)); + result := round(oletounixfloat(t)); end; function unixtoole(i:float):tdatetime; @@ -553,12 +553,51 @@ begin result := mmqpctimefloat; end; + + +var + GetSystemTimePreciseAsFileTime:procedure(var v:tfiletime); stdcall; + win8inited:boolean; + +procedure initwin8; +var + dllhandle:thandle; + +begin + win8inited := true; + dllhandle := loadlibrary('kernel32.dll'); + if (dllhandle <> 0) then begin + GetSystemTimePreciseAsFileTime := getprocaddress(dllhandle,'GetSystemTimePreciseAsFileTime'); + end; +end; + + +function unixtimefloat_win8:float; +var + ft:tfiletime; + i:int64 absolute ft; +begin + GetSystemTimePreciseAsFileTime(ft); + {change from windows 1601-01-01 to unix 1970-01-01. + use integer math for this, to preserve precision} + dec(i, 116444736000000000); + result := (i / 10000000); +end; + + + function unixtimefloat:float; const margin = 0.0012; var f,g,h:float; begin + if not win8inited then initwin8; + if assigned(@GetSystemTimePreciseAsFileTime) then begin + result := unixtimefloat_win8; + exit; + end; + result := monotimefloat+timefloatbias; f := result-unixtimefloat_systemtime; if ((f > ticks_freq2+margin) or (f < -margin)) or (timefloatbias = 0) then begin