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0A gh-76785: Minor Cleanup of "Cross-interpreter" Code by ericsnowcurrently · Pull Request #126457 · python/cpython · GitHub
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gh-76785: Minor Cleanup of "Cross-interpreter" Code #126457

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Merged
merged 9 commits into from
Nov 7, 2024
Merged

gh-76785: Minor Cleanup of "Cross-interpreter" Code #126457

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f513a3c
_PyCrossInterpreterData -> _PyXIData_t
ericsnowcurrently Nov 5, 2024
873973a
crossinterpdatafunc -> xidatafunc
ericsnowcurrently Nov 5, 2024
9057584
CrossInterpreterData -> XIData
ericsnowcurrently Nov 5, 2024
759d399
Adjust declaration groups.
ericsnowcurrently Nov 5, 2024
ccf3edc
Move an include to the right file.
ericsnowcurrently Nov 5, 2024
81eacbf
Use the local typedefs.
ericsnowcurrently Nov 5, 2024
8c2586d
Split out pycore_crossinterp_data_registry.h.
ericsnowcurrently Nov 5, 2024
5eb7adb
Wrap _PyXIData_registry_t with a new _PyXIData_lookup_t.
ericsnowcurrently Nov 5, 2024
ab27394
Fix the c-analyzer.
ericsnowcurrently Nov 5, 2024
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Use the local typedefs.
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@ericsnowcurrently
ericsnowcurrently committed Nov 5, 2024
commit 81eacbfa089344afda05eec62b75bafc16f7b9f1
68 changes: 36 additions & 32 deletions Python/crossinterp_data_lookup.h
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Original file line number Diff line number Diff line change
@@ -1,6 +1,12 @@
#include "pycore_weakref.h" // _PyWeakref_GET_REF()


typedef struct _xidregistry dlregistry_t;
typedef struct _xidregitem dlregitem_t;


// forward

static xidatafunc _lookup_getdata_from_registry(PyInterpreterState *, PyObject *);

static xidatafunc
Expand Down Expand Up @@ -31,10 +37,10 @@ _PyXIData_Lookup(PyObject *obj)

/* registry lifecycle */

static void _register_builtins_for_crossinterpreter_data(struct _xidregistry *);
static void _register_builtins_for_crossinterpreter_data(dlregistry_t *);

static void
_xidregistry_init(struct _xidregistry *registry)
_xidregistry_init(dlregistry_t *registry)
{
if (registry->initialized) {
return;
Expand All @@ -48,10 +54,10 @@ _xidregistry_init(struct _xidregistry *registry)
}
}

static void _xidregistry_clear(struct _xidregistry *);
static void _xidregistry_clear(dlregistry_t *);

static void
_xidregistry_fini(struct _xidregistry *registry)
_xidregistry_fini(dlregistry_t *registry)
{
if (!registry->initialized) {
return;
Expand Down Expand Up @@ -86,7 +92,7 @@ xid_lookup_fini(PyInterpreterState *interp)
/* registry thread safety */

static void
_xidregistry_lock(struct _xidregistry *registry)
_xidregistry_lock(dlregistry_t *registry)
{
if (registry->global) {
PyMutex_Lock(&registry->mutex);
Expand All @@ -95,7 +101,7 @@ _xidregistry_lock(struct _xidregistry *registry)
}

static void
_xidregistry_unlock(struct _xidregistry *registry)
_xidregistry_unlock(dlregistry_t *registry)
{
if (registry->global) {
PyMutex_Unlock(&registry->mutex);
Expand All @@ -105,35 +111,34 @@ _xidregistry_unlock(struct _xidregistry *registry)

/* accessing the registry */

static inline struct _xidregistry *
static inline dlregistry_t *
_get_global_xidregistry(_PyRuntimeState *runtime)
{
return &runtime->xi.registry;
}

static inline struct _xidregistry *
static inline dlregistry_t *
_get_xidregistry(PyInterpreterState *interp)
{
return &interp->xi.registry;
}

static inline struct _xidregistry *
static inline dlregistry_t *
_get_xidregistry_for_type(PyInterpreterState *interp, PyTypeObject *cls)
{
struct _xidregistry *registry = _get_global_xidregistry(interp->runtime);
dlregistry_t *registry = _get_global_xidregistry(interp->runtime);
if (cls->tp_flags & Py_TPFLAGS_HEAPTYPE) {
registry = _get_xidregistry(interp);
}
return registry;
}

static struct _xidregitem * _xidregistry_remove_entry(
struct _xidregistry *, struct _xidregitem *);
static dlregitem_t* _xidregistry_remove_entry(dlregistry_t *, dlregitem_t *);

static struct _xidregitem *
_xidregistry_find_type(struct _xidregistry *xidregistry, PyTypeObject *cls)
static dlregitem_t *
_xidregistry_find_type(dlregistry_t *xidregistry, PyTypeObject *cls)
{
struct _xidregitem *cur = xidregistry->head;
dlregitem_t *cur = xidregistry->head;
while (cur != NULL) {
if (cur->weakref != NULL) {
// cur is/was a heap type.
Expand Down Expand Up @@ -161,10 +166,10 @@ _lookup_getdata_from_registry(PyInterpreterState *interp, PyObject *obj)
{
PyTypeObject *cls = Py_TYPE(obj);

struct _xidregistry *xidregistry = _get_xidregistry_for_type(interp, cls);
dlregistry_t *xidregistry = _get_xidregistry_for_type(interp, cls);
_xidregistry_lock(xidregistry);

struct _xidregitem *matched = _xidregistry_find_type(xidregistry, cls);
dlregitem_t *matched = _xidregistry_find_type(xidregistry, cls);
xidatafunc func = matched != NULL ? matched->getdata : NULL;

_xidregistry_unlock(xidregistry);
Expand All @@ -175,14 +180,14 @@ _lookup_getdata_from_registry(PyInterpreterState *interp, PyObject *obj)
/* updating the registry */

static int
_xidregistry_add_type(struct _xidregistry *xidregistry,
_xidregistry_add_type(dlregistry_t *xidregistry,
PyTypeObject *cls, xidatafunc getdata)
{
struct _xidregitem *newhead = PyMem_RawMalloc(sizeof(struct _xidregitem));
dlregitem_t *newhead = PyMem_RawMalloc(sizeof(dlregitem_t));
if (newhead == NULL) {
return -1;
}
*newhead = (struct _xidregitem){
*newhead = (dlregitem_t){
// We do not keep a reference, to avoid keeping the class alive.
.cls = cls,
.refcount = 1,
Expand All @@ -204,11 +209,10 @@ _xidregistry_add_type(struct _xidregistry *xidregistry,
return 0;
}

static struct _xidregitem *
_xidregistry_remove_entry(struct _xidregistry *xidregistry,
struct _xidregitem *entry)
static dlregitem_t *
_xidregistry_remove_entry(dlregistry_t *xidregistry, dlregitem_t *entry)
{
struct _xidregitem *next = entry->next;
dlregitem_t *next = entry->next;
if (entry->prev != NULL) {
assert(entry->prev->next == entry);
entry->prev->next = next;
Expand All @@ -226,12 +230,12 @@ _xidregistry_remove_entry(struct _xidregistry *xidregistry,
}

static void
_xidregistry_clear(struct _xidregistry *xidregistry)
_xidregistry_clear(dlregistry_t *xidregistry)
{
struct _xidregitem *cur = xidregistry->head;
dlregitem_t *cur = xidregistry->head;
xidregistry->head = NULL;
while (cur != NULL) {
struct _xidregitem *next = cur->next;
dlregitem_t *next = cur->next;
Py_XDECREF(cur->weakref);
PyMem_RawFree(cur);
cur = next;
Expand All @@ -252,10 +256,10 @@ _PyXIData_RegisterClass(PyTypeObject *cls, xidatafunc getdata)

int res = 0;
PyInterpreterState *interp = _PyInterpreterState_GET();
struct _xidregistry *xidregistry = _get_xidregistry_for_type(interp, cls);
dlregistry_t *xidregistry = _get_xidregistry_for_type(interp, cls);
_xidregistry_lock(xidregistry);

struct _xidregitem *matched = _xidregistry_find_type(xidregistry, cls);
dlregitem_t *matched = _xidregistry_find_type(xidregistry, cls);
if (matched != NULL) {
assert(matched->getdata == getdata);
matched->refcount += 1;
Expand All @@ -274,10 +278,10 @@ _PyXIData_UnregisterClass(PyTypeObject *cls)
{
int res = 0;
PyInterpreterState *interp = _PyInterpreterState_GET();
struct _xidregistry *xidregistry = _get_xidregistry_for_type(interp, cls);
dlregistry_t *xidregistry = _get_xidregistry_for_type(interp, cls);
_xidregistry_lock(xidregistry);

struct _xidregitem *matched = _xidregistry_find_type(xidregistry, cls);
dlregitem_t *matched = _xidregistry_find_type(xidregistry, cls);
if (matched != NULL) {
assert(matched->refcount > 0);
matched->refcount -= 1;
Expand Down Expand Up @@ -545,7 +549,7 @@ _tuple_shared(PyThreadState *tstate, PyObject *obj, _PyXIData_t *data)
// registration

static void
_register_builtins_for_crossinterpreter_data(struct _xidregistry *xidregistry)
_register_builtins_for_crossinterpreter_data(dlregistry_t *xidregistry)
{
// None
if (_xidregistry_add_type(xidregistry, (PyTypeObject *)PyObject_Type(Py_None), _none_shared) != 0) {
Expand Down








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