8000 Updates for PEP 554. by ericsnowcurrently · Pull Request #419 · python/peps · GitHub
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Updates for PEP 554. #419

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Merged
merged 18 commits into from
Sep 12, 2017
Merged

Updates for PEP 554. #419

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532a67d
Re-structure the PEP.
ericsnowcurrently Sep 12, 2017
1fa43ac
Fix internal links.
ericsnowcurrently Sep 12, 2017
06a73ee
Add CSP link.
ericsnowcurrently Sep 12, 2017
e3b168a
Drop get_main().
ericsnowcurrently Sep 12, 2017
2181af3
Enumerate shared state.
ericsnowcurrently Sep 12, 2017
db1bd77
Clarify about subinterpreters + threads.
ericsnowcurrently Sep 12, 2017
96640a4
Fix a typo.
ericsnowcurrently Sep 12, 2017
7605468
Add a note about synchronization primitives.
ericsnowcurrently Sep 12, 2017
8838271
Defer more ideas.
ericsnowcurrently Sep 12, 2017
574c9cc
Fill in the existing usage section.
ericsnowcurrently Sep 12, 2017
6e2d1b1
Drop unused anchors.
ericsnowcurrently Sep 12, 2017
a8a1b8b
Fill in the concurrency section.
ericsnowcurrently Sep 12, 2017
668609c
Add a note about interp state between runs.
ericsnowcurrently Sep 12, 2017
6bf53bb
Stub out some examples.
ericsnowcurrently Sep 12, 2017
154052d
Add a note about multi-processing.
ericsnowcurrently Sep 12, 2017
c3cbcf8
Fill in some of the examples.
ericsnowcurrently Sep 12, 2017
6bf6e06
Add a note about __main__.
ericsnowcurrently Sep 12, 2017
2c95da2
Fill out the remaining examples.
ericsnowcurrently Sep 12, 2017
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Fix internal links.
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@ericsnowcurrently
ericsnowcurrently committed Sep 12, 2017
commit 1fa43acf4507dbdcd3563ee83d5c99391098ae6c
24 changes: 18 additions & 6 deletions pep-0554.rst
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Expand Up @@ -14,13 +14,14 @@ Abstract

CPython has supported subinterpreters, with increasing levels of
support, since version 1.5. The feature has been available via the
C-API. [c-api]_ Subinterpreters operate in relative isolation from one
another (see ``Interpreter Isolation`` below), which provides the basis
for an alternative concurrency model.
C-API. [c-api]_ Subinterpreters operate in
`relative isolation from one another <Interpreter Isolation_>`_, which
provides the basis for an
`alternative concurrency model <Concurrency_>`_.

This proposal introduces the stdlib ``interpreters`` module. The module
will be provisional (see ``Provisional Status`` below). It exposes the
basic functionality of subinterpreters already provided by the C-API.
will be `provisional <Provisional Status_>`_. It exposes the basic
functionality of subinterpreters already provided by the C-API.


Proposal
Expand Down Expand Up @@ -252,7 +253,7 @@ will appeal to some Python users. That is the core value that the
* "stdlib support for subinterpreters adds extra burden
on C extension authors"

In the ``Interpreter Isolation`` section below we identify ways in
In the `Interpreter Isolation`_ section below we identify ways in
which isolation in CPython's subinterpreters is incomplete. Most
notable is extension modules that use C globals to store internal
state. PEP 3121 and PEP 489 provide a solution for most of the
Expand All @@ -278,6 +279,8 @@ which subinterpreters are worth it.
About Subinterpreters
=====================

.. isolation:

Interpreter Isolation
---------------------

Expand All @@ -299,12 +302,21 @@ Finally, some potential isolation is missing due to the current design
of CPython. This includes the GIL and memory management. Improvements
are currently going on to address gaps in this area.

.. concurrency:

Concurrency
-----------

TBD

Existing Usage
--------------

TBD


.. provisional:

Provisional Status
==================

Expand Down
0