kadanefewi

Need to check for a condition every 5 seconds inside a CPU intensive process. Best way is using timers?

5 posts in this topic

Basically I'm doing a very resource intensive file search in disk and every 5 seconds I need to check for a condition (basically a command to stop the search).

$timer = _Timer_Init()
For $i = 0 To $aFilesListSize - 1
    ;;do work here

    If _Timer_Diff($timer) > 5000 Then
        $timer = TimerInit
        CheckIfStopRequested()
    EndIf
Next

I assume checking a timer difference is pretty resource intensive, compared to a simple int value check.

So I thought about doing something like this.

$counter = 0
$timer = _Timer_Init()
For $i = 0 To $aFilesListSize - 1
    ;;do work here

    $counter = $counter + 1
    If $counter > 25 Then
        $counter = 0
        If _Timer_Diff($timer) > 5000 Then
            $timer = TimerInit
            CheckIfStopRequested()
        EndIf
    EndIf
Next

From my benchmarks, 25 iterations of the loops are roughly 1 to 3 seconds.

 

What do you think? Am I over optimizing? It's hard to measure the impact of each version, so any input would be appreciated.

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I think the best way would be to use AdlibRegister.

2 people like this

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Thanks, that's exactly what I needed!

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:)


My UDFs and Tutorials:

Spoiler

UDFs:
Active Directory (NEW 2017-04-18 - Version 1.4.8.0) - Download - General Help & Support - Example Scripts - Wiki
OutlookEX (NEW 2017-02-27 - Version 1.3.1.0) - Download - General Help & Support - Example Scripts - Wiki
ExcelChart (2015-04-01 - Version 0.4.0.0) - Download - General Help & Support - Example Scripts
Excel - Example Scripts - Wiki
Word - Wiki
PowerPoint (2015-06-06 - Version 0.0.5.0) - Download - General Help & Support

Tutorials:
ADO - Wiki

 

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17 hours ago, water said:

I think the best way would be to use AdlibRegister.

Thanks for this. I learn something new every day. Thanks.


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