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gh-110481: Implement biased reference counting (gh-110764)

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Sam Gross 2023-10-30 12:06:09 -04:00 • committed by GitHub
parent 05f2f0ac92
commit 6dfb8fe023
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29 changed files with 511 additions and 52 deletions
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9
Tools/build/deepfreeze.py
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@ -115,6 +115,7 @@ class Printer:
self.inits: list[str] = []
self.identifiers, self.strings = self.get_identifiers_and_strings()
self.write('#include "Python.h"')
self.write('#include "internal/pycore_object.h"')
self.write('#include "internal/pycore_gc.h"')
self.write('#include "internal/pycore_code.h"')
self.write('#include "internal/pycore_frame.h"')
@ -154,14 +155,10 @@ class Printer:
self.write("}" + suffix)
def object_head(self, typename: str) -> None:
with self.block(".ob_base =", ","):
self.write(f".ob_refcnt = _Py_IMMORTAL_REFCNT,")
self.write(f".ob_type = &{typename},")
self.write(f".ob_base = _PyObject_HEAD_INIT(&{typename}),")
def object_var_head(self, typename: str, size: int) -> None:
with self.block(".ob_base =", ","):
self.object_head(typename)
self.write(f".ob_size = {size},")
self.write(f".ob_base = _PyVarObject_HEAD_INIT(&{typename}, {size}),")
def field(self, obj: object, name: str) -> None:
self.write(f".{name} = {getattr(obj, name)},")