Speed Up ProcessWait/ProcessClose Polling?

[DrLarch]

According to the help file: "The process is polled approximately every 250 milliseconds."

I've got a process I am watching for and need to kill as fast possible. There appears to be no way to configure the poll time that I can see. Does anyone know any other way of accomplishing this? I don't care about nailing the CPU's, since it's just going to be for a relatively short period (I have a rough idea of when the process starts). Any direction/ideas appreciated.

[careca]

A loop with processclose and a sleep of 10, dont wait just close if it exists.

[Nine]

While True
  if ProcessExists ("yourprocess.exe") then
    processclose ("yourprocess.exe")
    exitloop
  endif
Wend

 

[DrLarch]

I don't think that's going to do anything special - you're still subject to the native, built-in ProcessExists polling interval. Kind of thinking a dev might need to weigh in.

Edited February 25, 2019 by DrLarch

[TheXman]

No dev is needed.  All you have to do is run a simple test.  Assuming that notepad is not running, this little snippet will show you how many times in 1 second, it iterates through the loop checking for its existence.  If the number is greater then 4, then obviously the polling verbiage has nothing to do with ProcessExists().  That polling verbiage most likely relates to ProcessWait* functions.

 

$iCounter = 0
$hTimer   = TimerInit()

While TimerDiff($hTimer) < 1000
    $iCounter += 1
    If ProcessExists('notepad.exe') Then ExitLoop
WEnd

ConsoleWrite(StringFormat('$iCounter = %i', $iCounter) & @CRLF)

 

[BrewManNH]

If you change the ConsoleWrite line to this, you can see how long it ran.

ConsoleWrite(StringFormat('$iCounter = %i', $iCounter) & @CRLF & TimerDiff($hTimer) & "ms" & @CRLF)

Which should give you some indication of approximately what's going on, timewise, in the script.

BTW, modified @TheXman's script above to make it more obvious how long the wait is for ProcessExists

$iCounter = 0
$hTimer = TimerInit()

While TimerDiff($hTimer) < 1000
     $iCounter += 1
     ProcessExists('notepad.exe')
WEnd

ConsoleWrite(StringFormat('$iCounter = %i', $iCounter) & @CRLF & TimerDiff($hTimer) & "ms" & @CRLF)

For me, this is averaging about 110 cycles in one second.

Edited February 25, 2019 by BrewManNH
Added more information and new script

[DrLarch]

Thanks TheXman & BrewManNH - that did the trick. Yeah I'm getting somewhere between 470-495. So it appears if you're running a ProcessWait by itself, then you're only dinged the 250ms, vs in a loop it returns asap, I guess.

Edited February 25, 2019 by DrLarch