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Compiling a Java-implemented JVM with GCJ

From: Marko DimjaÅeviÄ <marko at dimjasevic dot net>
To: gcc-help at gcc dot gnu dot org
Date: Fri, 18 Sep 2015 17:35:06 -0600
Subject: Compiling a Java-implemented JVM with GCJ
Authentication-results: sourceware.org; auth=none

Hi all,

There is a Java Virtual Machine completely implemented in Java called
JPF [1]. In other words, when you run a Java program within this
machine, it's a JVM-within-a-JVM execution. Obviously, this uses a lot
of resources and I was thinking of ways how that could be reduced.

An idea I have is to compile JPF with GCJ to native code, thereby
resulting in only one JVM that is used when running a Java program
within JPF.

Do you see any inherent limitations to this idea, i.e. reasons why it
wouldn't work? I'm not a JVM expert so it's hard for me to see any
obvious obstacles.


[1] Java PathFinder: http://babelfish.arc.nasa.gov/trac/jpf


-- 
Cheers,
Marko DimjaÅeviÄ
http://dimjasevic.net/marko

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