CVS commit: pkgsrc/devel/py-greenlet

["Blue Rats" <rodent%netbsd.org@localhost>]

Module Name:    pkgsrc
Committed By:   rodent
Date:           Tue Dec 31 17:59:08 UTC 2013

Added Files:
        pkgsrc/devel/py-greenlet: DESCR Makefile PLIST distinfo

Log Message:
Import py27-greenlet-0.4.1 as devel/py-greenlet. Packaged in pkgsrc-wip by
kamel.derouiche%gmail.com@localhost

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 tests/test_generator.py.

Greenlets are provided as a C extension module for the regular unmodified
interpreter.

Greenlets are lightweight coroutines for in-process concurrent programming.


To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 pkgsrc/devel/py-greenlet/DESCR \
    pkgsrc/devel/py-greenlet/Makefile pkgsrc/devel/py-greenlet/PLIST \
    pkgsrc/devel/py-greenlet/distinfo

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.