8000 bpo-41861: Convert sqlite3 cache and node types to heap types by erlend-aasland · Pull Request #22417 · python/cpython · GitHub
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bpo-41861: Convert sqlite3 cache and node types to heap types #22417

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Merged
merged 8 commits into from
Sep 27, 2020
Merged

bpo-41861: Convert sqlite3 cache and node types to heap types #22417

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b3af287
Convert CacheType to heap type
Sep 8, 2020
c3cedc5
Convert NodeType to heap type
Sep 8, 2020
a3e33bd
Add NEWS entry
Sep 26, 2020
f1568b1
Revert "Add NEWS entry"
Sep 26, 2020
cdb6e4c
Use PyType_FromModuleAndSpec iso. PyType_FromSpec
Sep 26, 2020
6be8abc
Improve dealloc
Sep 26, 2020
fad7260
Fix dealloc for cache type as well
Sep 26, 2020
e8be010
Make node type spec static
Sep 26, 2020
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Convert NodeType to heap type
  • Loading branch information
Erlend E. Aasland committed Sep 26, 2020
commit c3cedc5bf17c029d75facc9b5f0479826c9d9321
65 changes: 17 additions & 48 deletions Modules/_sqlite/cache.c
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ pysqlite_Node* pysqlite_new_node(PyObject* key, PyObject* data)
{
pysqlite_Node* node;

node = (pysqlite_Node*) (pysqlite_NodeType.tp_alloc(&pysqlite_NodeType, 0));
node = (pysqlite_Node*) (pysqlite_NodeType->tp_alloc(pysqlite_NodeType, 0));
if (!node) {
return NULL;
}
Expand All @@ -52,6 +52,7 @@ void pysqlite_node_dealloc(pysqlite_Node* self)
Py_DECREF(self->data);

Py_TYPE(self)->tp_free((PyObject*)self);
Py_DECREF(pysqlite_NodeType);
}

int pysqlite_cache_init(pysqlite_Cache* self, PyObject* args, PyObject* kwargs)
Expand Down Expand Up @@ -254,47 +255,19 @@ PyObject* pysqlite_cache_display(pysqlite_Cache* self, PyObject* args)
Py_RETURN_NONE;
}

PyTypeObject pysqlite_NodeType = {
PyVarObject_HEAD_INIT(NULL, 0)
MODULE_NAME "Node", /* tp_name */
sizeof(pysqlite_Node), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)pysqlite_node_dealloc, /* tp_dealloc */
0, /* tp_vectorcall_offset */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_as_async */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, /* tp_flags */
0, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)0, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
0 /* tp_free */
static PyType_Slot pysqlite_NodeType_slots[] = {
{Py_tp_dealloc, pysqlite_node_dealloc},
{Py_tp_new, PyType_GenericNew},
{0, NULL},
};

PyType_Spec pysqlite_NodeType_spec = {
.name = MODULE_NAME ".Node",
.basicsize = sizeof(pysqlite_Node),
.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE,
.slots = pysqlite_NodeType_slots,
};
PyTypeObject *pysqlite_NodeType = NULL;

static PyMethodDef cache_methods[] = {
{"get", (PyCFunction)pysqlite_cache_get, METH_O,
Expand Down Expand Up @@ -322,13 +295,9 @@ PyTypeObject *pysqlite_CacheType = NULL;

extern int pysqlite_cache_setup_types(void)
{
int rc;

pysqlite_NodeType.tp_new = PyType_GenericNew;

rc = PyType_Ready(&pysqlite_NodeType);
if (rc < 0) {
return rc;
pysqlite_NodeType = (PyTypeObject *)PyType_FromSpec(&pysqlite_NodeType_spec);
if (pysqlite_NodeType == NULL) {
return -1;
}

pysqlite_CacheType = (PyTypeObject *)PyType_FromSpec(&pysqlite_CacheType_spec);
Expand Down
2 changes: 1 addition & 1 deletion Modules/_sqlite/cache.h
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Original file line number Diff line number Diff line change
Expand Up @@ -59,7 +59,7 @@ typedef struct
int decref_factory;
} pysqlite_Cache;

extern PyTypeObject pysqlite_NodeType;
extern PyTypeObject *pysqlite_NodeType;
extern PyTypeObject *pysqlite_CacheType;

int pysqlite_node_init(pysqlite_Node* self, PyObject* args, PyObject* kwargs);
Expand Down
0