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gh-111569: Fix critical sections test on WebAssembly #111897

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Merged
brettcannon merged 3 commits into from
Nov 9, 2023
Merged

gh-111569: Fix critical sections test on WebAssembly #111897

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aef9180
gh-111569: Fix critical sections test on WebAssembly
colesbury Nov 9, 2023
fe38ff9
Use HAVE_PTHREAD_STUBS instead
colesbury Nov 9, 2023
2ac2321
Go back to Py_CAN_START_THREADS
colesbury Nov 9, 2023
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8 changes: 8 additions & 0 deletions 8 Include/pyport.h
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Original file line number Diff line number Diff line change
Expand Up @@ -470,6 +470,14 @@ extern "C" {
# define WITH_THREAD
#endif

/* Some WebAssembly platforms do not provide a working pthread implementation.
* Thread support is stubbed and any attempt to create a new thread fails.
*/
#if (!defined(HAVE_PTHREAD_STUBS) && \
(!defined(__EMSCRIPTEN__) || defined(__EMSCRIPTEN_PTHREADS__)))
# define Py_CAN_START_THREADS 1
#endif

#ifdef WITH_THREAD
# ifdef Py_BUILD_CORE
# ifdef HAVE_THREAD_LOCAL
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4 changes: 4 additions & 0 deletions 4 Modules/_testinternalcapi/test_critical_sections.c
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Expand Up @@ -170,6 +170,7 @@ thread_critical_sections(void *arg)
}
}

#ifdef Py_CAN_START_THREADS
static PyObject *
test_critical_sections_threads(PyObject *self, PyObject *Py_UNUSED(args))
{
Expand All @@ -194,12 +195,15 @@ test_critical_sections_threads(PyObject *self, PyObject *Py_UNUSED(args))
Py_DECREF(test_data.obj1);
Py_RETURN_NONE;
}
#endif

static PyMethodDef test_methods[] = {
{"test_critical_sections", test_critical_sections, METH_NOARGS},
{"test_critical_sections_nest", test_critical_sections_nest, METH_NOARGS},
{"test_critical_sections_suspend", test_critical_sections_suspend, METH_NOARGS},
#ifdef Py_CAN_START_THREADS
{"test_critical_sections_threads", test_critical_sections_threads, METH_NOARGS},
#endif
{NULL, NULL} /* sentinel */
};

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