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| author | Mark Shannon <mark@hotpy.org> | 2021-10-13 13:19:34 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-10-13 13:19:34 (GMT) |
| commit | a8b9350964f43cb648c98c179c8037fbf3ff8a7d (patch) | |
| tree | 13a539432c9d48ac278d34d040f17a7a12eac771 /Misc/NEWS.d | |
| parent | 97308dfcdc0696e0b116c37386e2ff4d72e6c3f4 (diff) | |
| download | cpython-a8b9350964f43cb648c98c179c8037fbf3ff8a7d.zip cpython-a8b9350964f43cb648c98c179c8037fbf3ff8a7d.tar.gz cpython-a8b9350964f43cb648c98c179c8037fbf3ff8a7d.tar.bz2 | |
bpo-45340: Don't create object dictionaries unless actually needed (GH-28802)
* Never change types' cached keys. It could invalidate inline attribute objects.
* Lazily create object dictionaries.
* Update specialization of LOAD/STORE_ATTR.
* Don't update shared keys version for deletion of value.
* Update gdb support to handle instance values.
* Rename SPLIT_KEYS opcodes to INSTANCE_VALUE.
Diffstat (limited to 'Misc/NEWS.d')
| -rw-r--r-- | Misc/NEWS.d/next/Core and Builtins/2021-10-08-09-47-38.bpo-45340.ukHgDb.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Misc/NEWS.d/next/Core and Builtins/2021-10-08-09-47-38.bpo-45340.ukHgDb.rst b/Misc/NEWS.d/next/Core and Builtins/2021-10-08-09-47-38.bpo-45340.ukHgDb.rst new file mode 100644 index 0000000..7760773 --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2021-10-08-09-47-38.bpo-45340.ukHgDb.rst @@ -0,0 +1,3 @@ +Object attributes are held in an array instead of a dictionary. An object's +dictionary are created lazily, only when needed. Reduces the memory +consumption of a typical Python object by about 30%. Patch by Mark Shannon. |