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GH-100000: Cleanup and polish various watchers code #99998

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merged 7 commits into from Dec 14, 2022

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itamaro
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@itamaro itamaro commented Dec 5, 2022

This includes:

  1. Followup on @markshannon's comment, improving code watchers dispatch efficiency (read callback only if watcher is on the active watchers bits, and bail out early from dispatch loop)
  2. Apply same optimization to func watchers dispatch loop as well
  3. Remove dict watchers array that was never used
  4. Add initialization of type watchers array
  5. Add (PyCFunction) cast to a few test functions
  6. Change an invariant test in type watchers dispatch loop to an assert

- Remove `dict_watchers` array on the interpreter state (was never used, likely added in [the function watchers
PR](https://github.com/python/cpython/pull/98175/files#diff-cb06b7ba43789a1d6ae5bef46baa8a255b72dbcd2b44bfec7f146ea4e94dbfa0) when resolving a merge conflict)
- Cast `METH_NOARGS` function to `(PyCFunction)` in watchers test methods
- Initialize `type_watchers` array to `NULL`s
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itamaro commented Dec 5, 2022

I'm pretty sure this doesn't require a news entry, but not sure whether an issue is needed. let me know and I can file an issue if needed!

@itamaro itamaro changed the title Cleanup and polish various watchers code GH-100000: Cleanup and polish various watchers code Dec 5, 2022
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itamaro commented Dec 5, 2022

filed an issue preemptively, got the nice and round GH-100000 ^_^

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Looks good to me, thanks for the cleanup!

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Looks good. Thanks.

@markshannon markshannon merged commit ae83c78 into python:main Dec 14, 2022
carljm added a commit to carljm/cpython that referenced this pull request Dec 16, 2022
* main:
  Improve stats presentation for calls. (pythonGH-100274)
  Better stats for `LOAD_ATTR` and `STORE_ATTR` (pythonGH-100295)
  pythongh-81057: Move the Cached Parser Dummy Name to _PyRuntimeState (python#100277)
  Document that zipfile's pwd parameter is a `bytes` object (python#100209)
  pythongh-99767: mark `PyTypeObject.tp_watched` as internal use only in table (python#100271)
  Fix typo in introduction.rst (python#100266)
  pythongh-78997: AttributeError if loading fails in LibraryLoader.__getattr__
  pythonGH-100234: Set a default value for random.expovariate() (pythonGH-100235)
  Remove uninformative itertools recipe (pythonGH-100253)
  pythonGH-99767: update PyTypeObject docs for type watchers (pythonGH-99928)
  Move stats for the method cache into the `Py_STAT` machinery (pythonGH-100255)
  pythonGH-100222: fix typo _py_set_opocde -> _py_set_opcode (pythonGH-100259)
  pythonGH-100000: Cleanup and polish various watchers code (pythonGH-99998)
  pythongh-90111: Minor Cleanup for Runtime-Global Objects (pythongh-100254)
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4 participants