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gh-127271: Replace use of PyCell_GET/SET (gh-127272)

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* Replace uses of `PyCell_GET` and `PyCell_SET`.  These macros are not
  safe to use in the free-threaded build.  Use `PyCell_GetRef()` and
  `PyCell_SetTakeRef()` instead. 

* Since `PyCell_GetRef()` returns a strong rather than borrowed ref, some
  code restructuring was required, e.g. `frame_get_var()` returns a strong
  ref now.

* Add critical sections to `PyCell_GET` and `PyCell_SET`.

* Move critical_section.h earlier in the Python.h file.

* Add `PyCell_GET` to the free-threading howto table of APIs that return
  borrowed refs.

* Add additional unit tests for free-threading.
This commit is contained in:
Neil Schemenauer 2024-12-03 10:33:06 -08:00 • committed by GitHub
parent 276cd66ccb
commit fc5a0dc224
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8 changed files with 231 additions and 48 deletions
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Include/Python.h
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@ -69,6 +69,7 @@
#include "pystats.h"
#include "pyatomic.h"
#include "lock.h"
#include "critical_section.h"
#include "object.h"
#include "refcount.h"
#include "objimpl.h"
@ -130,7 +131,6 @@
#include "import.h"
#include "abstract.h"
#include "bltinmodule.h"
#include "critical_section.h"
#include "cpython/pyctype.h"
#include "pystrtod.h"
#include "pystrcmp.h"