<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-NZ link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>My automation app loads 1 of perhaps 30 different 3<sup>rd</sup> party DLL’s depending on the job required. It only has to do 1 job at a time and if the job changes (automatically), the current DLL is unloaded and the relevant one is loaded using LoadLibrary. All the DLL’s have the same interface/functions.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>It seems in recent times that the loading of a DLL is taking much too long for many customers, sometimes several seconds, which isn’t acceptable, and it appears to be related to anti-virus software scanning the DLL every time it loads, or at least the first time it has loaded on that day. That seems to vary in different anti-virus software.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>I need to remove that delay. I would rather the main app not load every single DLL at startup as that would take a long time to load, and often only 2 or 3 of the DLL’s will ever be used by a customer.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>There are 2 apps loaded at the same time and rather than altering the app that loads the DLL’s and does all the work, my thought was to have this 2<sup>nd</sup> app load all the DLL’s in the folder using a thread.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>Am I correct that a 2<sup>nd</sup> app loading the same DLL will not actually load the DLL from the hard drive but just access it from RAM, so it should load very quickly?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>Cheers,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#1F497D'>Ross.<o:p></o:p></span></p></div></body></html>