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gh-59956: Clarify Runtime State Status Expectations (gh-101308)

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A PyThreadState can be in one of many states in its lifecycle, represented by some status value.  Those statuses haven't been particularly clear, so we're addressing that here.  Specifically:

* made the distinct lifecycle statuses clear on PyThreadState
* identified expectations of how various lifecycle-related functions relate to status
* noted the various places where those expectations don't match the actual behavior

At some point we'll need to address the mismatches.

(This change also includes some cleanup.)

https://github.com/python/cpython/issues/59956
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Eric Snow 2023-01-30 12:07:48 -07:00 • committed by GitHub
parent ea232716d3
commit e11fc032a7
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6 changed files with 426 additions and 176 deletions
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Modules/_threadmodule.c
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@ -1161,7 +1161,7 @@ thread_PyThread_start_new_thread(PyObject *self, PyObject *fargs)
return PyErr_NoMemory();
}
boot->interp = _PyInterpreterState_GET();
boot->tstate = _PyThreadState_Prealloc(boot->interp);
boot->tstate = _PyThreadState_New(boot->interp);
if (boot->tstate == NULL) {
PyMem_Free(boot);
if (!PyErr_Occurred()) {