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|
unit UTime;
interface
{$IFDEF FPC}
{$MODE Delphi}
{$ENDIF}
type
TTime = class
constructor Create;
function GetTime: real;
end;
procedure CountSkipTimeSet;
procedure CountSkipTime;
procedure CountMidTime;
procedure TimeSleep(ms: real);
var
USTime: TTime;
TimeFreq: int64;
TimeNew: int64;
TimeOld: int64;
TimeSkip: real;
TimeMid: real;
TimeMidTemp: int64;
implementation
uses
{$IFDEF win32}
windows,
{$ELSE}
libc,
time,
{$ENDIF}
ucommon;
// -- ON Linux it MAY Be better to use ... clock_gettime() instead of CurrentSec100OfDay
// who knows how fast or slow that function is !
// but this gets a compile for now .. :)
(*
msec( )
{
struct timeval tv;
gettimeofday( &tv, NULL );
return (int64_t)tv.tv_sec * (int64_t)1000000 + (int64_t)tv.tv_usec;
}
*)
constructor TTime.Create;
begin
CountSkipTimeSet;
end;
procedure CountSkipTimeSet;
begin
{$IFDEF win32}
QueryPerformanceFrequency(TimeFreq);
QueryPerformanceCounter(TimeNew);
{$ELSE}
TimeNew := CurrentSec100OfDay(); // TODO - JB_Linux will prob need looking at
TimeFreq := 0;
{$ENDIF}
end;
procedure CountSkipTime;
begin
TimeOld := TimeNew;
{$IFDEF win32}
QueryPerformanceCounter(TimeNew);
{$ELSE}
TimeNew := CurrentSec100OfDay(); // TODO - JB_Linux will prob need looking at
{$ENDIF}
if ( TimeNew-TimeOld > 0 ) AND
( TimeFreq > 0 ) THEN
begin
TimeSkip := (TimeNew-TimeOld)/TimeFreq;
end;
end;
procedure CountMidTime;
begin
{$IFDEF win32}
QueryPerformanceCounter(TimeMidTemp);
TimeMid := (TimeMidTemp-TimeNew)/TimeFreq;
{$ELSE}
TimeMidTemp := CurrentSec100OfDay();
TimeMid := (TimeMidTemp-TimeNew); // TODO - JB_Linux will prob need looking at
{$ENDIF}
end;
procedure TimeSleep(ms: real);
var
TimeStart: int64;
TimeHalf: int64;
Time: real;
Stop: boolean;
begin
{$IFDEF win32}
QueryPerformanceCounter(TimeStart);
{$ELSE}
TimeStart := CurrentSec100OfDay(); // TODO - JB_Linux will prob need looking at
{$ENDIF}
Stop := false;
while (not Stop) do
begin
{$IFDEF win32}
QueryPerformanceCounter(TimeHalf);
Time := 1000 * (TimeHalf-TimeStart)/TimeFreq;
{$ELSE}
TimeHalf := CurrentSec100OfDay();
Time := 1000 * (TimeHalf-TimeStart); // TODO - JB_Linux will prob need looking at
{$ENDIF}
if Time > ms then
Stop := true;
end;
end;
function TTime.GetTime: real;
var
TimeTemp: int64;
begin
{$IFDEF win32}
QueryPerformanceCounter(TimeTemp);
Result := TimeTemp / TimeFreq;
{$ELSE}
TimeTemp := CurrentSec100OfDay();
Result := TimeTemp; // TODO - JB_Linux will prob need looking at
{$ENDIF}
end;
end.
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