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gh-98627: Add an Optional Check for Extension Module Subinterpreter Compatibility (gh-99040)

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Enforcing (optionally) the restriction set by PEP 489 makes sense. Furthermore, this sets the stage for a potential restriction related to a per-interpreter GIL.

This change includes the following:

* add tests for extension module subinterpreter compatibility
* add _PyInterpreterConfig.check_multi_interp_extensions
* add Py_RTFLAGS_MULTI_INTERP_EXTENSIONS
* add _PyImport_CheckSubinterpIncompatibleExtensionAllowed()
* fail iff the module does not implement multi-phase init and the current interpreter is configured to check

https://github.com/python/cpython/issues/98627
This commit is contained in:
Eric Snow 2023-02-15 18:16:00 -07:00 • committed by GitHub
parent 3dea4ba6c1
commit 89ac665891
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15 changed files with 557 additions and 19 deletions
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4
Lib/test/test_embed.py
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@ -1656,13 +1656,15 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
api=API_PYTHON, env=env)
def test_init_main_interpreter_settings(self):
EXTENSIONS = 1<<8
THREADS = 1<<10
DAEMON_THREADS = 1<<11
FORK = 1<<15
EXEC = 1<<16
expected = {
# All optional features should be enabled.
'feature_flags': FORK | EXEC | THREADS | DAEMON_THREADS,
'feature_flags':
FORK | EXEC | THREADS | DAEMON_THREADS,
}
out, err = self.run_embedded_interpreter(
'test_init_main_interpreter_settings',