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gh-128182: Add per-object memory access synchronization to ctypes #128490

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Merged
encukou merged 24 commits into from
Jan 13, 2025
Merged

gh-128182: Add per-object memory access synchronization to ctypes #128490

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3bb21ff
Lock pointer reads and writes in ctypes.
ZeroIntensity Jan 4, 2025
8c4c49a
Add a test.
ZeroIntensity Jan 4, 2025
da293c1
Fix the test.
ZeroIntensity Jan 4, 2025
d01b757
Add blurb.
ZeroIntensity Jan 4, 2025
8bb980f
Add a lock for generic helper functions.
ZeroIntensity Jan 4, 2025
d60f2e2
Add documentation note.
ZeroIntensity Jan 4, 2025
de4c4ea
Fix compiler warning on GIL-ful builds.
ZeroIntensity Jan 4, 2025
23d8e21
Fix MSVC compiler warnings.
ZeroIntensity Jan 4, 2025
bdee2b2
Fix MSVC compiler warnings (actually this time)
ZeroIntensity Jan 4, 2025
9f272d9
Apply suggestions from code review
ZeroIntensity Jan 6, 2025
32a885f
Fix Sphinx code block.
ZeroIntensity Jan 6, 2025
1c92b4b
Flatten call to PyUnicode_AsWideChar
ZeroIntensity Jan 6, 2025
ff34cc2
Fix lock.
ZeroIntensity Jan 6, 2025
804f1b6
Fix indentation.
ZeroIntensity Jan 6, 2025
bae3c5b
Revert "Flatten call to PyUnicode_AsWideChar"
ZeroIntensity Jan 6, 2025
d720d9a
Properly flatten call to PyUnicode_AsWideChar
ZeroIntensity Jan 6, 2025
04b3252
Fix indentation.
ZeroIntensity Jan 6, 2025
6401bbc
Clarify comment
ZeroIntensity Jan 6, 2025
9d35e86
Switch to critical sections.
ZeroIntensity Jan 8, 2025
ce94234
Update test_arrays.py
ZeroIntensity Jan 9, 2025
d6a4bc8
Update Doc/library/ctypes.rst
ZeroIntensity Jan 9, 2025
5a4c1d6
Update Modules/_ctypes/_ctypes.c
ZeroIntensity Jan 9, 2025
774a6ec
Update Modules/_ctypes/_ctypes.c
ZeroIntensity Jan 9, 2025
c8f2cd3
Remove silly seealso.
ZeroIntensity Jan 10, 2025
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Fix MSVC compiler warnings.
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@ZeroIntensity
ZeroIntensity committed Jan 4, 2025
commit 23d8e21f7c716d164a71dbe39dd1f51cc86a8bea
6 changes: 3 additions & 3 deletions Modules/_ctypes/_ctypes.c
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Original file line number Diff line number Diff line change
Expand Up @@ -907,7 +907,7 @@ CDataType_from_buffer_copy_impl(PyObject *type, PyTypeObject *cls,

result = generic_pycdata_new(st, (PyTypeObject *)type, NULL, NULL);
if (result != NULL) {
locked_memcpy_to((CDataObject *) result, buffer->buf + offset, info->size);
locked_memcpy_to((CDataObject *) result, (char *)buffer->buf + offset, info->size);
}
return result;
}
Expand Down Expand Up @@ -5329,7 +5329,7 @@ Pointer_item(PyObject *myself, Py_ssize_t index)
offset = index * iteminfo->size;

return PyCData_get(st, proto, stginfo->getfunc, (PyObject *)self,
index, size, (deref + offset));
index, size, (char *)(deref + offset));
}

static int
Expand Down Expand Up @@ -5374,7 +5374,7 @@ Pointer_ass_item(PyObject *myself, Py_ssize_t index, PyObject *value)
offset = index * iteminfo->size;

return PyCData_set(st, (PyObject *)self, proto, stginfo->setfunc, value,
index, size, (deref + offset));
index, size, (char *)(deref + offset));
}

static PyObject *
Expand Down