2009/9/15 Facundo Batista <facundobatista@???>:
> 2009/9/15 Lucio Torre <lucio.torre@???>:
>> http://eventlet.net/
>>
>> Basicamente, toda el lio que hace twisted pero en lugar de hacerlo
>> pure python, se modifica el interprete para tener corutinas usando
>> greenlets.
>
> ¿Usan un Python patcheado y recompilado? ¿A qué te referís con "se
> modifica el intérprete"?
>
2009/9/15 David Weil <tenuki@???>:
> Y no hay algo así para stackless??
Eventlet runs on Python version 2.4 or greater, with the following dependencies:
* Greenlet
* pyOpenSSL
greenlet 0.2
Lightweight in-process concurrent programming
(This is the py.magic.greenlet module from the py lib
<
http://codespeak.net/py/>)
The "greenlet" package is a spin-off of Stackless, a version of
CPython that supports micro-threads called "tasklets". Tasklets run
pseudo-concurrently (typically in a single or a few OS-level threads)
and are synchronized with data exchanges on "channels".
A "greenlet", on the other hand, is a still more primitive notion of
micro-thread with no implicit scheduling; coroutines, in other words.
This is useful when you want to control exactly when your code runs.
You can build custom scheduled micro-threads on top of greenlet;
however, it seems that greenlets are useful on their own as a way to
make advanced control flow structures. For example, we can recreate
generators; the difference with Python's own generators is that our
generators can call nested functions and the nested functions can
yield values too. Additionally, you don't need a "yield" keyword. See
the example in test_generator.py.
Greenlets are provided as a C extension module for the regular
unmodified interpreter.
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