- Idle time

From: Douglas G. Danforth <"Douglas>
Date: Thu, 28 Apr 2005 12:44:09 -0400

----boundary-LibPST-iamunique-1372563802_-_-
Content-type: text/plain

Folks & Wojtek,

Looking into the source code of BB1.5beta I find that the basic
processing time of BlackBox is tied to 50 milliseconds. The module
Menus specifies this time. actionHook.Loop is called in Menus and
actionHook.Step is called in HostWindows.Idle.

Menus
   idlePeriod = 50; (* ms *)
   HostWindows.Idle
   Services.actionHook.Loop
        
HostWindows.Idle
   Services.actionHook.Step

The idlePeriod is passed to USER32.SetTimer which operates at a minimum
of 1 millisecond so the operating system (through this call) is placing
a basic lower bound restriction on the time resolution.

Hence to speed up Services.DoLater and not violate the rest of BlackBox
it would be necessary to use a different timer within Menus. Whether
this idea is valid requires extended study.

-Doug

--- BlackBox
--- send subject HELP or UNSUBSCRIBE to blackbox{([at]})nowhere.xy



----boundary-LibPST-iamunique-1372563802_-_-
Content-type: application/rtf
Content-transfer-encoding: base64
Content-Disposition: attachment; filename="rtf-body.rtf"
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----boundary-LibPST-iamunique-1372563802_-_---
Received on Thu Apr 28 2005 - 18:44:09 UTC