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From "Xiao-Feng Li" <xiaofeng...@gmail.com>
Subject Re: [drlvm][gc] difference between compiled code and object data
Date Thu, 21 Feb 2008 03:26:14 GMT
On Thu, Feb 21, 2008 at 11:17 AM, Simon Chow <simon.harmony@gmail.com> wrote:
> Thanks. It is every helpful!
>  So how does Harmony manage JIT generated code at runtime? Is there some
>  consideration for code locality improvement?
>

Simon, let the JIT people to answer the question. For your reference,
please check the paper below:
Dynamic code management: improving whole program code locality in
managed runtimes. by Xianglong Huang, Brian T. Lewis, Kathryn S.
McKinley: VEE 2006: 133-143.

>
>  On 21/02/2008, Xiao-Feng Li <xiaofeng.li@gmail.com> wrote:
>  >
>  > Simon, currently, Harmony manages VM data and Java heap separately.
>  > Java Heap is a specific term for the space that is managed by GC for
>  > Java objects. VM data such as VM data structures and  JIT generated
>  > code have their respective management, not managed by GC. They are
>  > interacting in certain contexts, such as class loading/unloading,
>  > etc., where native data have pointers to Java objects or the reverse.
>  > But basically they are independent at the moment.
>  >
>  > Thanks,
>  > xiaofeng
>  >
>  >
>  > On Thu, Feb 21, 2008 at 9:57 AM, Simon Chow <simon.harmony@gmail.com>
>  > wrote:
>  > > I find the compiled code produced by JIT is placed in the JVM heap space
>  > >  (0xA0000000~0xB0000000 by default) as well as object data, is that
>  > true?
>  > >  What's the difference of memory management policies used for object
>  > data and
>  > >  compiled code?
>  > >
>  > >
>  > >  --
>  > >  From : Simon.Chow@Software School of Fudan University
>  > >
>  >
>  >
>  >
>  >
>  > --
>  > http://xiao-feng.blogspot.com
>  >
>
>
>
>  --
>
>
> From : Simon.Chow@Software School of Fudan University
>



-- 
http://xiao-feng.blogspot.com

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