[LLVMdev] LLVM JIT: How to install a callback for a function loaded in at runtime

[Carter Cheng]

Thanks. I didnt realize that this particular function was a virtual inherited from the Module Provider interface. Out of curiousity what applications does the materializeModule function have and when does it get invoked?

Regards,

Carter.



--- On Thu, 7/31/08, Nicolas Geoffray <nicolas.geoffray at lip6.fr> wrote:

> From: Nicolas Geoffray <nicolas.geoffray at lip6.fr>
> Subject: Re: [LLVMdev] LLVM JIT: How to install a callback for a function loaded in at runtime
> To: carter_cheng at yahoo.com, "LLVM Developers Mailing List" <llvmdev at cs.uiuc.edu>
> Date: Thursday, July 31, 2008, 5:42 PM
> Hi Carter,
> 
> Carter Cheng wrote:
> > Hello,
> >
> > This is probably a bit of a beginner's question
> but I am new to LLVM
> > I have been examining the possibility of constructing
> something similar to the JnJVM for a language which supports
> dynamic class loading. The problem I am having is
> determining how the JIT system allows for dynamic loading of
> functions into the JIT. The paper indicates the JnJVM use
> some sort of callback when the JIT hits a call it cannot yet
> resolve. How do I install such a handler?
> >
> >   
> 
> You need to implement your own ModuleProvider and
> specialize the 
> materialzeFunction function to do the dynamic loading.  In
> vmkit, you 
> can take a look at lib/JnJVM/VMCore/JnjvmModuleProvider.cpp
> file.
> 
> Nicolas
> 
> > Thanks in advance,
> >
> > Carter. 
> >
> >
> >       
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