Re: SISC in applets

Turadg Aleahmad wrote:

> 1) SISC can't even load because the options in sisc.util.Util use 
> System.getProperty().  On class load, this throws an 
> AccessControlException on the PropertyPermission.  To remedy this I've 
> written and checked in a safeGetProperty () method that returns the 
> default value if there is no permission.

That's a reasonable change. Thanks for the patch. PS: next time please 
don't reformat the entire file.

> 2) With applet-level permissions, loading the heap takes much much 
> longer (~ 1 min).  If I go into the Java Plugin control panel and grant 
> my applet AllPermission, it doesn't take but a few seconds.  This may be 
> due to my remedy above, but I can't tell since if I omit it, the applet 
> can't even load.

My guess is that something is throwing lots of exception which are 
caught and reverting to some default behaviour. I don't think it's 
caused by your change though since that code should only get called 
once, on startup. If the slowdown really happens during heap loading 
then this narrows down the list of culprits significantly. I had a quick 
look at the deserialization code but couldn't spot anything obvious.

> 3) The only way to set options like permitInterupts in an 
> applet-environment requires using the JPI control panel.  This is rather 
> cumbersome.  If my applet has AllPermission, I can set the system 
> property before Util loads, but under applet-level permissions there is 
> no way to set this option without requiring the user to modify his JPI 
> settings.

Stick a custom sisc/util/Defaults.class at the beginning of your class path.


Mathias.



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