a41df5ad1b
kamel.derouiche@gmail.com 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.
19 lines
1.1 KiB
Text
19 lines
1.1 KiB
Text
The greenlet package is a spin-off of Stackless, a version of CPython that
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supports micro-threads called "tasklets". Tasklets run pseudo-concurrently
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(typically in a single or a few OS-level threads) and are synchronized with data
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exchanges on "channels".
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|
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A "greenlet", on the other hand, is a still more primitive notion of
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|
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
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|
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
|
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interpreter.
|
|
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|
Greenlets are lightweight coroutines for in-process concurrent programming.
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