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PEP 611: Drop restriction on the number of coroutines. (#1252)

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Mark Shannon 2019-12-11 10:29:37 +00:00 committed by GitHub
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@ -110,10 +110,8 @@ This PR proposes that the following language features and runtime values be limi
* The number of bytecode instructions in a code object. * The number of bytecode instructions in a code object.
* The sum of local variables and stack usage for a code object. * The sum of local variables and stack usage for a code object.
* The number of classes in a running interpreter. * The number of classes in a running interpreter.
* The number of live coroutines in a running interpreter.
It is likely that operating system limits will restrict the number of usuable coroutines to much less than a million, It is likely that memory constraints would be a limiting factor before the number of classes reaches one million.
and that memory constraints may be a limiting factor before the number of classes reaches one million.
Reducing the limits Reducing the limits
------------------- -------------------
@ -191,7 +189,6 @@ It is anticipated that CPython will enforce the limits as follows:
* The number of bytecode instructions in a code object: 3.9 onwards. * The number of bytecode instructions in a code object: 3.9 onwards.
* The sum of local variables and stack usage for a code object: 3.9 onwards. * The sum of local variables and stack usage for a code object: 3.9 onwards.
* The number of classes in a running interpreter: probably 3.10 onwards, maybe warning in 3.9. * The number of classes in a running interpreter: probably 3.10 onwards, maybe warning in 3.9.
* The number of live coroutines in a running interpreter: Implicitly limited by operating system limits until at least 3.11.
Backwards Compatibility Backwards Compatibility
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