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bpo-41798: Allocate unicodedata CAPI on the heap #24128

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Merged
merged 3 commits into from
Jan 20, 2021
Merged

bpo-41798: Allocate unicodedata CAPI on the heap #24128

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b354265
Allocate unicodedata CAPI on the heap
Jan 5, 2021
bf0e601
Address review: Use PyModule_AddObjectRef iso. PyModuel_AddObject
Jan 10, 2021
720ada4
Address review
Jan 20, 2021
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37 changes: 29 additions & 8 deletions Modules/unicodedata.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1308,10 +1308,31 @@ capi_getcode(const char* name, int namelen, Py_UCS4* code,

}

static const _PyUnicode_Name_CAPI unicodedata_capi =
static void
unicodedata_destroy_capi(PyObject *capsule)
{
.getname = capi_getucname,
.getcode = capi_getcode,
void *capi = PyCapsule_GetPointer(capsule, PyUnicodeData_CAPSULE_NAME);
PyMem_Free(capi);
}

static PyObject *
unicodedata_create_capi(void)
{
_PyUnicode_Name_CAPI *capi = PyMem_Malloc(sizeof(_PyUnicode_Name_CAPI));
if (capi == NULL) {
PyErr_NoMemory();
return NULL;
}
capi->getname = capi_getucname;
capi->getcode = capi_getcode;

PyObject *capsule = PyCapsule_New(capi,
PyUnicodeData_CAPSULE_NAME,
unicodedata_destroy_capi);
if (capsule == NULL) {
PyMem_Free(capi);
}
return capsule;
};


Expand Down Expand Up @@ -1477,13 +1498,13 @@ unicodedata_exec(PyObject *module)
}

/* Export C API */
v = PyCapsule_New((void *)&unicodedata_capi, PyUnicodeData_CAPSULE_NAME,
NULL);
if (v == NULL) {
PyObject *capsule = unicodedata_create_capi();
if (capsule == NULL) {
return -1;
}
if (PyModule_AddObject(module, "_ucnhash_CAPI", v) < 0) {
Py_DECREF(v);
int rc = PyModule_AddObjectRef(module, "_ucnhash_CAPI", capsule);
Py_DECREF(capsule);
if (rc < 0) {
return -1;
}
return 0;
Expand Down