[pypy-dev] Summer of Code

Armin Rigo arigo at tunes.org
Tue Mar 18 19:45:06 CET 2008

Hi Carl,

On Tue, Mar 18, 2008 at 10:53:46AM +0100, Carl Friedrich Bolz wrote:
> > - Threads using the new gc seems pretty important
> That's true, but I fear that this is a very hard (probably too hard)
> task.

No, the basic task is only to ensure that threads and our new GCs can be
used in the same pypy-c.  This doesn't mean that the GCs should be
multithreaded or even thread-safe, if we take care of only allocating
objects when the GIL is held (Global Interpreter Lock).

A fully multithreaded GC is step two.  It would be good for RPython
programs that are more freely multithreaded, like Alexander's attempt to
just remove the GIL from pypy-c and not care about crashes (using
explicit locks at application-level to prevent them).  Getting there is
more work indeed.  Any student with JikesRVM MMTk experience around? :-)

A bientot,


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