World: r3wp

not safelly. 


 while in the command, if you run arbitrary code, the GC might swap 
 the references you have while your in the command.  so that when 
 you return values, the data they used to refer ot do not exist anymore!

man exceptions are quick. 


more than 4 million adds a second, even though the values are cast 
to 32 bits and its using a stub (it jumps into a C function from 
a library) .

Seems like I should be able to call Qt's sql or network functions

So this http://doc.trolltech.com/3.3/sql.html#4should work for 
DB access for R3

But I guess you're going to have to open and close a new connection 
for each query which is not very satisfactory

http://www.rebol.com/r3/downloads/r3-host-kit-a101.zip

And, thank Maxim for his help on testing it.

And see my general rant at:
http://www.rebol.net/r3blogs/0327.html

Ah, I see Graham posted it.  Yes, insane. the pressure... was... 
too... intense.

So, now with that out, let me see about getting the posix release 
too... then one of you can port the graphics to X win.

I want an Amiga version...   ;-)

and it has to run faster than the PC version which has a 1000 times 
faster CPU  ;-D

funny thing is that getting an amiga version to work probably would 
take the least time of all OSes... its so clean.

And least useful too

If you import one extension which has an exported function such as 
test and then import a different extension which has the same test 
function, it only recognizes the first.

Also how do you "unload" an imported dll?

Are extensions imported into the global namespace?

only if the commands are in the export list.

Are extensions imported into the global namespace if they appear 
in the extension's export list?

the equivalent of it, yes IIRC

that's a drag

That's what makes in-place updating and manual conflict resolution 
possible.

no... just dont export them and do this:

lib: import %r3-test-extension.dll

lib/my-command arg arg arg

That's the other part of the design.

its nice that the extensions use a module to negotiate the access 
of a lib.

can we force an extension not to export anything?

Sure.

IMPORT/only does that.

I am not aware of whether external extensions can be unloaded. I 
would hope so, because they can in theory be upgraded.

It's not a problem with host-embedded extensions because they are 
not dlls in the first place.

I notice that as long as my r3 instance is running, the dll I imported 
has a file lock on it.

Did you remove all references to the extension? If there are any 
references, the dll shouldn't be unloaded. There's no unimport function, 
so try LOAD-EXTENSION, then throwing away what it returns, then recycling.

LOAD-EXTENSION doesn't import, it just loads.

I unset the function I imported

It is still referenced in system/modules if it is imported. Start 
over, just LOAD-EXTENSION (ignoring what it returns) and recycle. 
See if the DLL is still locked.

Fot that matter, unsetting the function wouldn't work unless you 
unset it in both the user context and the exports context.

There is one global exports context. The separate user context is 
task-specific. Plus each module has its own context.

RobertS, I built mine using MinGW .. didn't try CygWin

Graham, you might want to read some of the docs. Helps.

For example, in the case of two modules with same function names, 
you can use a direct reference to clarify which one you're referring 
to, or bind your code to a specific module. Easy to do.

Carl, do external extensions unload on recycle if there are no extant 
references?

Also, every extension owns its own namespace, same as modules.

There's no unloading, but it's possible, however, very low on the 
todo list considering that most extensions are long-lived.  The locked 
DLL G refers to above is because the code segments are loaded. (That's 
more of an OS implementation issue, a poor one IMO.)

I've read all the docs .. as to whether I remember the content, that's 
a different issue

So, the next thing on the big todo list is: C-to-R callbacks.

Has anyone thought in detail about what is wanted for callbacks, 
or is it just a general idea that is wanted?

Not in detail ...

Also, on the list is to add BrianH's change, in fact that probably 
should be A102 by itself.

Maxim has given it some thought, but his thoughts are not task-safe.

When are tasks on the table?

Anytime you want.