|Optimization for OOP email@example.com (2008-05-03)|
|Re: Optimization for OOP firstname.lastname@example.org (2008-05-05)|
|Re: Optimization for OOP email@example.com (Dmitry A. Kazakov) (2008-05-05)|
|Re: Optimization for OOP firstname.lastname@example.org (Tony Finch) (2008-05-05)|
|Re: Optimization for OOP email@example.com (firstname.lastname@example.org) (2008-05-05)|
|Re: Optimization for OOP email@example.com (Dmitry A. Kazakov) (2008-05-06)|
|Re: Optimization for OOP firstname.lastname@example.org (2008-05-06)|
|From:||Tony Finch <email@example.com>|
|Date:||05 May 2008 18:11:27 +0100 (BST)|
|Posted-Date:||05 May 2008 17:13:11 EDT|
firstname.lastname@example.org (Torben =?iso-8859-1?Q?=C6gidius?= Mogensen) wrote:
>The most important optimisation is to get rid of dynamic method calls.
>This can, however, be quite tricky as you can't tell if a method can
>be overridden without knowing the whole program, so it plays havoc
>with separate compilation.
The Self papers have some good descriptions of optimisation techniques
for a pure OO language. http://research.sun.com/self/papers/papers.html
In a VM-based language you can implement a tracing JIT which naturally
specializes away dynamic dispatch. Mike Pall wrote a short description
of how this works in the second half of his post to the Lua list
linked below, with some references to papers.
f.anthony.n.finch <email@example.com> http://dotat.at/
FITZROY SOLE: VARIABLE 4 IN EAST, OTHERWISE SOUTHERLY 5 TO 7, OCCASIONALLY
GALE 8 IN WEST SOLE. ROUGH OR VERY ROUGH IN WEST, SLIGHT OR MODERATE IN EAST.
SHOWERS, WITH FOG PATCHES IN EAST. MODERATE OR GOOD, OCCASIONALLY VERY POOR.
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