[New-bugs-announce] [issue30789] Redesign PyCodeObject.co_extras to use a single memory block, instead of two

[STINNER Victor]

New submission from STINNER Victor:

Currently, _PyCode_SetExtra() uses two memory block for code extras. Using a different structure, it would be possible to use a single memory block: less memory fragmentation, better CPU cache usage, less indirections, etc.

It matters since the long term plan for co_extras is to implement of kind-of JIT compiler insider CPython: see bpo-28158.

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components: Interpreter Core
messages: 297077
nosy: haypo
priority: normal
severity: normal
status: open
title: Redesign PyCodeObject.co_extras to use a single memory block, instead of two
type: performance
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30789>
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