Re: SISC in applets

Matthias Radestock wrote:

> PS: next time please don't reformat the entire file.


Oops.  I'm using Eclipse and I've got an itchy "Ctrl-Shift-F".

>> 2) With applet-level permissions, loading the heap takes much much longer
>
>
> couldn't spot anything obvious.


I don't know what was happening before, but it's not happening anymore.  
Same goes for that reverse! problem I mentioned in #sisc.  (Though I 
think that one's related to sisc-lib.jar out of sync with the heap.)

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


I couldn't get this to work.  I put a custom Defaults.class into a 
sisc-override.jar and put that earlier in the class path.  BTW, why is 
it an interface instead of an abstract class?  I read in Effective Java 
that using interfaces for constants is bad.  You can't argue on brevity 
since DEFAULT_PERMIT_INTERRUPTS is just as long as 
Defaults.PERMIT_INTERRUPTS.  Ok, one char shorter.  :)


In other news, I added a target that builds sisc-heap.jar.  This 
contains sisc/boot/sisc.shp and sisc/boot/HeapAnchor.class.  This works 
fine for me, but I have another idea that may be better:  
sisc.boot.HeapLoader (or HeapUtil, something like that).  It has one 
method getHeap() (or whatever) that returns a SeekableInputStream.

public static SeekableInputStream getHeap() {
    URL heapURL = this.class.getResource("sisc.shp");
    if (heapURL == null) return null;
    return new MemoryRandomAccessInputStream(heapURL.openStream());
}

The only problem I see with this is creating Java code that depends on 
the JAR that ant builds.  But I think it's important for applets to have 
an easy, consistent way to retrieve the heap and I would say that weighs 
more.  What do you think?


-Turadg




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