VM options ?

[Brian Rice]

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On Dec 20, 2005, at 1:23 AM, Márton Sasvári (IJ/ETH) wrote:

> Are there options to start the VM available, like starting without  
> post-bootstrap ?

The post-bootstrap is executed by the bootstrap image itself, and the  
VM is not even aware of it.

> I experience problems on cygwin during post-bootstrap when loading  
> in path.slate. (When parsing RootedPaths somewhere 'path root' gets  
> to be the lobby (which seems to be the default from the code) which  
> does not have a #parethesize method).

That may be a bug (although not a bug of any normal configuration) -  
also, you may be fooled into thinking that the receiver was the lobby  
when in fact it may be a syntax representation of the lobby as  
lexical context.

Did you make sure to get the most recent set of images and VM  
sources? Or are you working with slate-current.tgz? Otherwise, you  
should never see this.

If it is an emergency type of situation, you could replace path.slate  
with an empty file so that nothing is loaded, but this will likely  
cause other problems since the AutoLoader depends on it, and the  
final post-bootstrap action calls that. Of course, you could always  
try similar tricks on the AutoLoader, or abort the post-bootstrap  
from the debugger.

> I would like to avoid post-bootstrap actions somehow and load them  
> one by one to find out what the problem is.

I will try to think about how to make this more modular, but I cannot  
promise quick results. Again, the VM has NO CONTROL over this. I  
would have to improve the structure of the post-bootstrap itself to  
make it more modular. Ideas are welcome, but please read post- 
bootstrap.slate before responding. The latest copy is at:

http://slate.tunes.org/repos/main/src/mobius/vm/post-bootstrap.slate

Like the bootstrap, the post-bootstrap is code that is compiled into  
the kernel image and then executed directly as a huge bytecode  
method. The post-bootstrap just happens to be a little more flexible  
since it is loading files from outside the kernel image, since the  
parser and bytecode compiler exist by that point.

- --
- -Brian
http://tunes.org/~water/brice.vcf

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