# QueryPerformance

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QueryPerformance

This example shows just a way to calculate the TimeDiff. Otherwise please use the TimerDiff() function.

- MSDN System Information Functions: Kernel32.dll QueryPerformanceCounter

- MSDN System Information Functions: Kernel32.dll QueryPerformanceFrequency

```Func QueryPerformance(\$N = 0)
Static \$F, \$A, \$Q, \$P, \$X
Local \$R
If \$N And Not \$P Then
\$F = DllCall("Kernel32.dll", "Int", "QueryPerformanceFrequency", "Int64*", "")
\$F = \$F[1]
\$P = DllCall("Kernel32.dll", "Int", "QueryPerformanceCounter", "Int64*", "")
\$P = \$P[1]
Return \$F + \$P + (\$X = 0) + (\$A = 0)
EndIf
\$Q = DllCall("Kernel32.dll", "Int", "QueryPerformanceCounter", "Int64*", "")
\$A = \$A + \$Q[1] - \$P
\$P = \$Q[1]
\$X = \$X + 1
\$R = \$A / \$X / \$F
Return (\$N And \$X = \$N) ? BitShift(\$X = \$X - 1, -64) : (\$N = 0 And \$R) ? (\$R + (\$A = 0) + (\$P = 0) + (\$X = 0)) : 1
EndFunc    ;==> QueryPerformance() AutoIt v3.3.12.0```
Edited by kaesereibe

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Examples:

```QueryPerformance(1)
Sleep(2500)
\$End = QueryPerformance(0)
MsgBox(0, "QueryPerformance()", \$End)

\$i = 0
QueryPerformance(1)
While \$i <> 10000000
\$i += 1
WEnd
\$End = QueryPerformance(0)
MsgBox(0, "QueryPerformance()", \$End)```
Edited by kaesereibe

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This is just the same like this:

```#include <Timers.au3>
Global \$Start = _Timer_Init()
Sleep(200)
ConsoleWrite (_Timer_Diff(\$Start) & @LF)```

Programming today is a race between software engineers striving to
build bigger and better idiot-proof programs, and the Universe
trying to produce bigger and better idiots.
So far, the Universe is winning.

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Like I said in my top post:

"This example shows just a way to calculate the TimeDiff. Otherwise please use the TimerDiff() function."

Its the same in short and only 1 function

QueryPerformance(1) start

QueryPerformance(0) to get the diff & reset

Edited by kaesereibe

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And

Global \$Start = _Timer_Init() ;to start

ConsoleWrite (_Timer_Diff(\$Start) & @LF) ;to get the diff

@kaesereibe that is unnecessarily complicated, all to replace a native function that works.

But i do appreciate the effort to come up with something new. Keep it up.

Edited by careca

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