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gh-59956: Clarify GILState-related Code (gh-101161)

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The objective of this change is to help make the GILState-related code easier to understand.  This mostly involves moving code around and some semantically equivalent refactors.  However, there are a also a small number of slight changes in structure and behavior:

* tstate_current is moved out of _PyRuntimeState.gilstate
* autoTSSkey is moved out of _PyRuntimeState.gilstate
* autoTSSkey is initialized earlier
* autoTSSkey is re-initialized (after fork) earlier

https://github.com/python/cpython/issues/59956
This commit is contained in:
Eric Snow 2023-01-19 16:04:14 -07:00 • committed by GitHub
parent 8a2d4f4e8e
commit 6036c3e856
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10 changed files with 373 additions and 250 deletions
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6
Include/internal/pycore_runtime_init.h
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@ -33,6 +33,9 @@ extern "C" {
until _PyInterpreterState_Enable() is called. */ \
.next_id = -1, \
}, \
/* A TSS key must be initialized with Py_tss_NEEDS_INIT \
in accordance with the specification. */ \
.autoTSSkey = Py_tss_NEEDS_INIT, \
.parser = _parser_runtime_state_INIT, \
.imports = { \
.lock = { \
@ -49,9 +52,6 @@ extern "C" {
}, \
.gilstate = { \
.check_enabled = 1, \
/* A TSS key must be initialized with Py_tss_NEEDS_INIT \
in accordance with the specification. */ \
.autoTSSkey = Py_tss_NEEDS_INIT, \
}, \
.dtoa = _dtoa_runtime_state_INIT(runtime), \
.fileutils = { \