gh-148871: extend and improve LOAD_COMMON_CONSTANT#148971
gh-148871: extend and improve LOAD_COMMON_CONSTANT#148971NekoAsakura wants to merge 4 commits intopython:mainfrom
LOAD_COMMON_CONSTANT#148971Conversation
NekoAsakura
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FFY00,
Fidget-Spinner,
ZeroIntensity,
ericsnowcurrently,
iritkatriel,
markshannon,
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tomasr8
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markshannon
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Mostly looks good.
You need to take care distinguishing between process-wide data and per-interpreter data. See the comments below.
| meth_getsets, /* tp_getset */ | ||
| 0, /* tp_base */ | ||
| 0, /* tp_dict */ | ||
| 0, /* tp_descr_get */ |
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Can you remove this list of zeros and use a named initializer: .tp_is_gc = cfunction_is_gc
| return PyLong_FromLong(oparg); | ||
| } | ||
| if (opcode == LOAD_COMMON_CONSTANT) { | ||
| switch (oparg) { |
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| switch (oparg) { | |
| return load_common_const(oparg); |
All these objects are immortal, so no need to worry about reference counts
| op(_LOAD_COMMON_CONSTANT, (-- value)) { | ||
| assert(oparg < NUM_COMMON_CONSTANTS); | ||
| PyObject *val = _PyInterpreterState_GET()->common_consts[oparg]; | ||
| PyObject *val; |
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Why aren't you using the constants table?
| static inline _PyStackRef | ||
| load_common_constant(unsigned int oparg) | ||
| { | ||
| switch (oparg) { |
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Why is this needed? These values should be in the table
| .vectorcall = _PyCFunction_vectorcall_O, | ||
| }; | ||
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| PyObject *_PyCommonConsts[NUM_COMMON_CONSTANTS]; |
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For this to be process-wide (not per-interpreter) PyExc_AssertionError and PyExc_NotImplementedError will need to be statically allocated.
Doing that might be complex, so maybe keep the constants per-interpreter for this PR, and make everything statically allocation in a later PR?
| (PyObject *)&_PyLong_SMALL_INTS[_PY_NSMALLNEGINTS - 1]; | ||
| for (int i = 0; i < NUM_COMMON_CONSTANTS; i++) { | ||
| assert(_PyCommonConsts[i] != NULL); | ||
| assert(_Py_IsImmortal(_PyCommonConsts[i])); |
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| assert(_Py_IsImmortal(_PyCommonConsts[i])); | |
| assert(_Py_IsStaticImmortal(_PyCommonConsts[i])); |
If _PyCommonConsts is to be statically allocated.
| Python/bltinmodule.c - PyFilter_Type - | ||
| Python/bltinmodule.c - PyMap_Type - | ||
| Python/bltinmodule.c - PyZip_Type - | ||
| Python/bltinmodule.c - _PyBuiltin_All - |
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I think this should be in the ignored.tsv files as we don't want to "fix" them.
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A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated. Once you have made the requested changes, please leave a comment on this pull request containing the phrase And if you don't make the requested changes, you will be poked with soft cushions! |
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Thanks for the review. Pushed the lot. :') |
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Behaviour changes
all.__self__/any.__self__<module 'builtins'>Nonegc.is_tracked(all)/gc.is_tracked(any)TrueFalseLOAD_COMMON_CONSTANT#148871