[New-bugs-announce] [issue40609] _tracemalloc: remove pointer_t type

[STINNER Victor]

New submission from STINNER Victor <vstinner at python.org>:

In bpo-26588, I modified the _tracemalloc module to support tracing memory allocations in multiple "domains" for numpy. I modified hashtable.c to support keys larger than void*, and I modified _tracemalloc.c to use a new pointer_t structure which is made of (domain: unsigned int, ptr: void*).

These changes made hashtable.c way more complicated than what it should be. I would like to reuse hashtable.c in more places. I am working on a change to remove the pointer_t type from _tracemalloc.c, and instead use a hash table for traces of domains other than the default domain (0). The new hash table maps a domain to a hash table: traces of a domain.

tracemalloc_traces remains the default hash table for traces of the default domain. Since it's the most common case, it doesn't go through the new hash table.

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components: Library (Lib)
messages: 368747
nosy: vstinner
priority: normal
severity: normal
status: open
title: _tracemalloc: remove pointer_t type
versions: Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40609>
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