From e5fb3a2385809f6cbdba2061b40fecf5b234f549 Mon Sep 17 00:00:00 2001 From: "Miss Islington (bot)" <31488909+miss-islington@users.noreply.github.com> Date: Tue, 4 Jun 2024 01:37:28 +0200 Subject: [3.13] gh-117398: Use Per-Interpreter State for the _datetime Static Types (gh-120009) We make use of the same mechanism that we use for the static builtin types. This required a few tweaks. This change is the final piece needed to make _datetime support multiple interpreters. I've updated the module slot accordingly. (cherry picked from commit 105f22ea46ac16866e6df18ebae2a8ba422b7f45, AKA gh-119929) Co-authored-by: Eric Snow --- Include/internal/pycore_object.h | 2 +- Include/internal/pycore_typeobject.h | 48 +++- .../2024-06-01-16-58-43.gh-issue-117398.kR0RW7.rst | 2 + Modules/_datetimemodule.c | 197 +++++++++++---- Objects/exceptions.c | 2 +- Objects/object.c | 2 +- Objects/structseq.c | 2 +- Objects/typeobject.c | 278 ++++++++++++++------- Objects/unicodeobject.c | 6 +- Objects/weakrefobject.c | 2 +- Python/crossinterp_exceptions.h | 4 +- Tools/c-analyzer/cpython/globals-to-fix.tsv | 1 + Tools/c-analyzer/cpython/ignored.tsv | 1 + 13 files changed, 381 insertions(+), 166 deletions(-) create mode 100644 Misc/NEWS.d/next/Library/2024-06-01-16-58-43.gh-issue-117398.kR0RW7.rst diff --git a/Include/internal/pycore_object.h b/Include/internal/pycore_object.h index f63e1da..6f13301 100644 --- a/Include/internal/pycore_object.h +++ b/Include/internal/pycore_object.h @@ -589,7 +589,7 @@ _PyObject_GET_WEAKREFS_LISTPTR(PyObject *op) if (PyType_Check(op) && ((PyTypeObject *)op)->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { PyInterpreterState *interp = _PyInterpreterState_GET(); - static_builtin_state *state = _PyStaticType_GetState( + managed_static_type_state *state = _PyStaticType_GetState( interp, (PyTypeObject *)op); return _PyStaticType_GET_WEAKREFS_LISTPTR(state); } diff --git a/Include/internal/pycore_typeobject.h b/Include/internal/pycore_typeobject.h index 7e533bd..8664ae0 100644 --- a/Include/internal/pycore_typeobject.h +++ b/Include/internal/pycore_typeobject.h @@ -44,10 +44,12 @@ struct type_cache { /* For now we hard-code this to a value for which we are confident all the static builtin types will fit (for all builds). */ -#define _Py_MAX_STATIC_BUILTIN_TYPES 200 +#define _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES 200 +#define _Py_MAX_MANAGED_STATIC_EXT_TYPES 10 typedef struct { PyTypeObject *type; + int isbuiltin; int readying; int ready; // XXX tp_dict can probably be statically allocated, @@ -59,7 +61,7 @@ typedef struct { are also some diagnostic uses for the list of weakrefs, so we still keep it. */ PyObject *tp_weaklist; -} static_builtin_state; +} managed_static_type_state; struct types_state { /* Used to set PyTypeObject.tp_version_tag. @@ -105,8 +107,16 @@ struct types_state { num_builtins_initialized is incremented once for each static builtin type. Once initialization is over for a subinterpreter, the value will be the same as for all other interpreters. */ - size_t num_builtins_initialized; - static_builtin_state builtins[_Py_MAX_STATIC_BUILTIN_TYPES]; + struct { + size_t num_initialized; + managed_static_type_state initialized[_Py_MAX_MANAGED_STATIC_BUILTIN_TYPES]; + } builtins; + /* We apply a similar strategy for managed extension modules. */ + struct { + size_t num_initialized; + size_t next_index; + managed_static_type_state initialized[_Py_MAX_MANAGED_STATIC_EXT_TYPES]; + } for_extensions; PyMutex mutex; }; @@ -130,12 +140,35 @@ typedef struct wrapperbase pytype_slotdef; static inline PyObject ** -_PyStaticType_GET_WEAKREFS_LISTPTR(static_builtin_state *state) +_PyStaticType_GET_WEAKREFS_LISTPTR(managed_static_type_state *state) { assert(state != NULL); return &state->tp_weaklist; } +extern int _PyStaticType_InitBuiltin( + PyInterpreterState *interp, + PyTypeObject *type); +extern void _PyStaticType_FiniBuiltin( + PyInterpreterState *interp, + PyTypeObject *type); +extern void _PyStaticType_ClearWeakRefs( + PyInterpreterState *interp, + PyTypeObject *type); +extern managed_static_type_state * _PyStaticType_GetState( + PyInterpreterState *interp, + PyTypeObject *type); + +// Export for '_datetime' shared extension. +PyAPI_FUNC(int) _PyStaticType_InitForExtension( + PyInterpreterState *interp, + PyTypeObject *self); +PyAPI_FUNC(void) _PyStaticType_FiniForExtension( + PyInterpreterState *interp, + PyTypeObject *self, + int final); + + /* Like PyType_GetModuleState, but skips verification * that type is a heap type with an associated module */ static inline void * @@ -151,11 +184,6 @@ _PyType_GetModuleState(PyTypeObject *type) } -extern int _PyStaticType_InitBuiltin(PyInterpreterState *, PyTypeObject *type); -extern static_builtin_state * _PyStaticType_GetState(PyInterpreterState *, PyTypeObject *); -extern void _PyStaticType_ClearWeakRefs(PyInterpreterState *, PyTypeObject *type); -extern void _PyStaticType_Dealloc(PyInterpreterState *, PyTypeObject *); - // Export for 'math' shared extension, used via _PyType_IsReady() static inline // function PyAPI_FUNC(PyObject *) _PyType_GetDict(PyTypeObject *); diff --git a/Misc/NEWS.d/next/Library/2024-06-01-16-58-43.gh-issue-117398.kR0RW7.rst b/Misc/NEWS.d/next/Library/2024-06-01-16-58-43.gh-issue-117398.kR0RW7.rst new file mode 100644 index 0000000..b0fe066 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2024-06-01-16-58-43.gh-issue-117398.kR0RW7.rst @@ -0,0 +1,2 @@ +The ``_datetime`` module (C implementation for :mod:`datetime`) now supports +being imported in multiple interpreters. diff --git a/Modules/_datetimemodule.c b/Modules/_datetimemodule.c index 16bb4c6..d6fa273 100644 --- a/Modules/_datetimemodule.c +++ b/Modules/_datetimemodule.c @@ -111,26 +111,37 @@ get_module_state(PyObject *module) #define INTERP_KEY ((PyObject *)&_Py_ID(cached_datetime_module)) static PyObject * -get_current_module(PyInterpreterState *interp) +get_current_module(PyInterpreterState *interp, int *p_reloading) { + PyObject *mod = NULL; + int reloading = 0; + PyObject *dict = PyInterpreterState_GetDict(interp); if (dict == NULL) { - return NULL; + goto error; } PyObject *ref = NULL; if (PyDict_GetItemRef(dict, INTERP_KEY, &ref) < 0) { - return NULL; + goto error; } - if (ref == NULL) { - return NULL; + if (ref != NULL) { + reloading = 1; + if (ref != Py_None) { + (void)PyWeakref_GetRef(ref, &mod); + if (mod == Py_None) { + Py_CLEAR(mod); + } + Py_DECREF(ref); + } } - PyObject *mod = NULL; - (void)PyWeakref_GetRef(ref, &mod); - if (mod == Py_None) { - Py_CLEAR(mod); + if (p_reloading != NULL) { + *p_reloading = reloading; } - Py_DECREF(ref); return mod; + +error: + assert(PyErr_Occurred()); + return NULL; } static PyModuleDef datetimemodule; @@ -139,7 +150,7 @@ static datetime_state * _get_current_state(PyObject **p_mod) { PyInterpreterState *interp = PyInterpreterState_Get(); - PyObject *mod = get_current_module(interp); + PyObject *mod = get_current_module(interp, NULL); if (mod == NULL) { assert(!PyErr_Occurred()); if (PyErr_Occurred()) { @@ -184,8 +195,6 @@ clear_current_module(PyInterpreterState *interp, PyObject *expected) { PyObject *exc = PyErr_GetRaisedException(); - PyObject *current = NULL; - PyObject *dict = PyInterpreterState_GetDict(interp); if (dict == NULL) { goto error; @@ -197,7 +206,10 @@ clear_current_module(PyInterpreterState *interp, PyObject *expected) goto error; } if (ref != NULL) { + PyObject *current = NULL; int rc = PyWeakref_GetRef(ref, ¤t); + /* We only need "current" for pointer comparison. */ + Py_XDECREF(current); Py_DECREF(ref); if (rc < 0) { goto error; @@ -208,19 +220,17 @@ clear_current_module(PyInterpreterState *interp, PyObject *expected) } } - if (PyDict_DelItem(dict, INTERP_KEY) < 0) { - if (!PyErr_ExceptionMatches(PyExc_KeyError)) { - goto error; - } + /* We use None to identify that the module was previously loaded. */ + if (PyDict_SetItem(dict, INTERP_KEY, Py_None) < 0) { + goto error; } goto finally; error: - PyErr_Print(); + PyErr_WriteUnraisable(NULL); finally: - Py_XDECREF(current); PyErr_SetRaisedException(exc); } @@ -6947,14 +6957,19 @@ static PyTypeObject PyDateTime_DateTimeType = { }; /* --------------------------------------------------------------------------- - * Module methods and initialization. + * datetime C-API. */ -static PyMethodDef module_methods[] = { - {NULL, NULL} +static PyTypeObject * const capi_types[] = { + &PyDateTime_DateType, + &PyDateTime_DateTimeType, + &PyDateTime_TimeType, + &PyDateTime_DeltaType, + &PyDateTime_TZInfoType, + /* Indirectly, via the utc object. */ + &PyDateTime_TimeZoneType, }; - /* The C-API is process-global. This violates interpreter isolation * due to the objects stored here. Thus each of those objects must * be managed carefully. */ @@ -7004,6 +7019,11 @@ create_timezone_from_delta(int days, int sec, int ms, int normalize) return tz; } + +/* --------------------------------------------------------------------------- + * Module state lifecycle. + */ + static int init_state(datetime_state *st, PyObject *module, PyObject *old_module) { @@ -7105,38 +7125,110 @@ clear_state(datetime_state *st) return 0; } + +/* --------------------------------------------------------------------------- + * Global module state. + */ + +// If we make _PyStaticType_*ForExtension() public +// then all this should be managed by the runtime. + +static struct { + PyMutex mutex; + int64_t interp_count; +} _globals = {0}; + +static void +callback_for_interp_exit(void *Py_UNUSED(data)) +{ + PyInterpreterState *interp = PyInterpreterState_Get(); + + assert(_globals.interp_count > 0); + PyMutex_Lock(&_globals.mutex); + _globals.interp_count -= 1; + int final = !_globals.interp_count; + PyMutex_Unlock(&_globals.mutex); + + /* They must be done in reverse order so subclasses are finalized + * before base classes. */ + for (size_t i = Py_ARRAY_LENGTH(capi_types); i > 0; i--) { + PyTypeObject *type = capi_types[i-1]; + _PyStaticType_FiniForExtension(interp, type, final); + } +} + +static int +init_static_types(PyInterpreterState *interp, int reloading) +{ + if (reloading) { + return 0; + } + + // `&...` is not a constant expression according to a strict reading + // of C standards. Fill tp_base at run-time rather than statically. + // See https://bugs.python.org/issue40777 + PyDateTime_TimeZoneType.tp_base = &PyDateTime_TZInfoType; + PyDateTime_DateTimeType.tp_base = &PyDateTime_DateType; + + /* Bases classes must be initialized before subclasses, + * so capi_types must have the types in the appropriate order. */ + for (size_t i = 0; i < Py_ARRAY_LENGTH(capi_types); i++) { + PyTypeObject *type = capi_types[i]; + if (_PyStaticType_InitForExtension(interp, type) < 0) { + return -1; + } + } + + PyMutex_Lock(&_globals.mutex); + assert(_globals.interp_count >= 0); + _globals.interp_count += 1; + PyMutex_Unlock(&_globals.mutex); + + /* It could make sense to add a separate callback + * for each of the types. However, for now we can take the simpler + * approach of a single callback. */ + if (PyUnstable_AtExit(interp, callback_for_interp_exit, NULL) < 0) { + callback_for_interp_exit(NULL); + return -1; + } + + return 0; +} + + +/* --------------------------------------------------------------------------- + * Module methods and initialization. + */ + +static PyMethodDef module_methods[] = { + {NULL, NULL} +}; + + static int _datetime_exec(PyObject *module) { int rc = -1; datetime_state *st = get_module_state(module); + int reloading = 0; PyInterpreterState *interp = PyInterpreterState_Get(); - PyObject *old_module = get_current_module(interp); + PyObject *old_module = get_current_module(interp, &reloading); if (PyErr_Occurred()) { assert(old_module == NULL); goto error; } /* We actually set the "current" module right before a successful return. */ - // `&...` is not a constant expression according to a strict reading - // of C standards. Fill tp_base at run-time rather than statically. - // See https://bugs.python.org/issue40777 - PyDateTime_TimeZoneType.tp_base = &PyDateTime_TZInfoType; - PyDateTime_DateTimeType.tp_base = &PyDateTime_DateType; - - PyTypeObject *capi_types[] = { - &PyDateTime_DateType, - &PyDateTime_DateTimeType, - &PyDateTime_TimeType, - &PyDateTime_DeltaType, - &PyDateTime_TZInfoType, - /* Indirectly, via the utc object. */ - &PyDateTime_TimeZoneType, - }; + if (init_static_types(interp, reloading) < 0) { + goto error; + } for (size_t i = 0; i < Py_ARRAY_LENGTH(capi_types); i++) { - if (PyModule_AddType(module, capi_types[i]) < 0) { + PyTypeObject *type = capi_types[i]; + const char *name = _PyType_Name(type); + assert(name != NULL); + if (PyModule_AddObjectRef(module, name, (PyObject *)type) < 0) { goto error; } } @@ -7145,11 +7237,8 @@ _datetime_exec(PyObject *module) goto error; } - /* For now we only set the objects on the static types once. - * We will relax that once each types __dict__ is per-interpreter. */ #define DATETIME_ADD_MACRO(dict, c, value_expr) \ do { \ - if (PyDict_GetItemString(dict, c) == NULL) { \ assert(!PyErr_Occurred()); \ PyObject *value = (value_expr); \ if (value == NULL) { \ @@ -7160,30 +7249,29 @@ _datetime_exec(PyObject *module) goto error; \ } \ Py_DECREF(value); \ - } \ } while(0) /* timedelta values */ - PyObject *d = PyDateTime_DeltaType.tp_dict; + PyObject *d = _PyType_GetDict(&PyDateTime_DeltaType); DATETIME_ADD_MACRO(d, "resolution", new_delta(0, 0, 1, 0)); DATETIME_ADD_MACRO(d, "min", new_delta(-MAX_DELTA_DAYS, 0, 0, 0)); DATETIME_ADD_MACRO(d, "max", new_delta(MAX_DELTA_DAYS, 24*3600-1, 1000000-1, 0)); /* date values */ - d = PyDateTime_DateType.tp_dict; + d = _PyType_GetDict(&PyDateTime_DateType); DATETIME_ADD_MACRO(d, "min", new_date(1, 1, 1)); DATETIME_ADD_MACRO(d, "max", new_date(MAXYEAR, 12, 31)); DATETIME_ADD_MACRO(d, "resolution", new_delta(1, 0, 0, 0)); /* time values */ - d = PyDateTime_TimeType.tp_dict; + d = _PyType_GetDict(&PyDateTime_TimeType); DATETIME_ADD_MACRO(d, "min", new_time(0, 0, 0, 0, Py_None, 0)); DATETIME_ADD_MACRO(d, "max", new_time(23, 59, 59, 999999, Py_None, 0)); DATETIME_ADD_MACRO(d, "resolution", new_delta(0, 0, 1, 0)); /* datetime values */ - d = PyDateTime_DateTimeType.tp_dict; + d = _PyType_GetDict(&PyDateTime_DateTimeType); DATETIME_ADD_MACRO(d, "min", new_datetime(1, 1, 1, 0, 0, 0, 0, Py_None, 0)); DATETIME_ADD_MACRO(d, "max", new_datetime(MAXYEAR, 12, 31, 23, 59, 59, @@ -7191,7 +7279,7 @@ _datetime_exec(PyObject *module) DATETIME_ADD_MACRO(d, "resolution", new_delta(0, 0, 1, 0)); /* timezone values */ - d = PyDateTime_TimeZoneType.tp_dict; + d = _PyType_GetDict(&PyDateTime_TimeZoneType); if (PyDict_SetItemString(d, "utc", (PyObject *)&utc_timezone) < 0) { goto error; } @@ -7266,7 +7354,7 @@ finally: static PyModuleDef_Slot module_slots[] = { {Py_mod_exec, _datetime_exec}, - {Py_mod_multiple_interpreters, Py_MOD_MULTIPLE_INTERPRETERS_NOT_SUPPORTED}, + {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED}, {Py_mod_gil, Py_MOD_GIL_NOT_USED}, {0, NULL}, }; @@ -7288,17 +7376,16 @@ module_clear(PyObject *mod) PyInterpreterState *interp = PyInterpreterState_Get(); clear_current_module(interp, mod); + // We take care of the static types via an interpreter atexit hook. + // See callback_for_interp_exit() above. + return 0; } static void module_free(void *mod) { - datetime_state *st = get_module_state((PyObject *)mod); - clear_state(st); - - PyInterpreterState *interp = PyInterpreterState_Get(); - clear_current_module(interp, (PyObject *)mod); + (void)module_clear((PyObject *)mod); } static PyModuleDef datetimemodule = { diff --git a/Objects/exceptions.c b/Objects/exceptions.c index 63c461d..f27ca2f 100644 --- a/Objects/exceptions.c +++ b/Objects/exceptions.c @@ -3685,7 +3685,7 @@ _PyExc_FiniTypes(PyInterpreterState *interp) { for (Py_ssize_t i=Py_ARRAY_LENGTH(static_exceptions) - 1; i >= 0; i--) { PyTypeObject *exc = static_exceptions[i].exc; - _PyStaticType_Dealloc(interp, exc); + _PyStaticType_FiniBuiltin(interp, exc); } } diff --git a/Objects/object.c b/Objects/object.c index ce3df37..9c74d54 100644 --- a/Objects/object.c +++ b/Objects/object.c @@ -2359,7 +2359,7 @@ _PyTypes_FiniTypes(PyInterpreterState *interp) // their base classes. for (Py_ssize_t i=Py_ARRAY_LENGTH(static_types)-1; i>=0; i--) { PyTypeObject *type = static_types[i]; - _PyStaticType_Dealloc(interp, type); + _PyStaticType_FiniBuiltin(interp, type); } } diff --git a/Objects/structseq.c b/Objects/structseq.c index ec5c5ab..d8289f2 100644 --- a/Objects/structseq.c +++ b/Objects/structseq.c @@ -718,7 +718,7 @@ _PyStructSequence_FiniBuiltin(PyInterpreterState *interp, PyTypeObject *type) return; } - _PyStaticType_Dealloc(interp, type); + _PyStaticType_FiniBuiltin(interp, type); if (_Py_IsMainInterpreter(interp)) { // Undo _PyStructSequence_InitBuiltinWithFlags(). diff --git a/Objects/typeobject.c b/Objects/typeobject.c index 14c43a7..18b7dfc 100644 --- a/Objects/typeobject.c +++ b/Objects/typeobject.c @@ -131,93 +131,159 @@ type_from_ref(PyObject *ref) #ifndef NDEBUG static inline int -static_builtin_index_is_set(PyTypeObject *self) +managed_static_type_index_is_set(PyTypeObject *self) { return self->tp_subclasses != NULL; } #endif static inline size_t -static_builtin_index_get(PyTypeObject *self) +managed_static_type_index_get(PyTypeObject *self) { - assert(static_builtin_index_is_set(self)); + assert(managed_static_type_index_is_set(self)); /* We store a 1-based index so 0 can mean "not initialized". */ return (size_t)self->tp_subclasses - 1; } static inline void -static_builtin_index_set(PyTypeObject *self, size_t index) +managed_static_type_index_set(PyTypeObject *self, size_t index) { - assert(index < _Py_MAX_STATIC_BUILTIN_TYPES); + assert(index < _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES); /* We store a 1-based index so 0 can mean "not initialized". */ self->tp_subclasses = (PyObject *)(index + 1); } static inline void -static_builtin_index_clear(PyTypeObject *self) +managed_static_type_index_clear(PyTypeObject *self) { self->tp_subclasses = NULL; } -static inline static_builtin_state * +static inline managed_static_type_state * static_builtin_state_get(PyInterpreterState *interp, PyTypeObject *self) { - return &(interp->types.builtins[static_builtin_index_get(self)]); + return &(interp->types.builtins.initialized[ + managed_static_type_index_get(self)]); +} + +static inline managed_static_type_state * +static_ext_type_state_get(PyInterpreterState *interp, PyTypeObject *self) +{ + return &(interp->types.for_extensions.initialized[ + managed_static_type_index_get(self)]); +} + +static managed_static_type_state * +managed_static_type_state_get(PyInterpreterState *interp, PyTypeObject *self) +{ + // It's probably a builtin type. + size_t index = managed_static_type_index_get(self); + managed_static_type_state *state = + &(interp->types.builtins.initialized[index]); + if (state->type == self) { + return state; + } + if (index > _Py_MAX_MANAGED_STATIC_EXT_TYPES) { + return state; + } + return &(interp->types.for_extensions.initialized[index]); } /* For static types we store some state in an array on each interpreter. */ -static_builtin_state * +managed_static_type_state * _PyStaticType_GetState(PyInterpreterState *interp, PyTypeObject *self) { assert(self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN); - return static_builtin_state_get(interp, self); + return managed_static_type_state_get(interp, self); } /* Set the type's per-interpreter state. */ static void -static_builtin_state_init(PyInterpreterState *interp, PyTypeObject *self) +managed_static_type_state_init(PyInterpreterState *interp, PyTypeObject *self, + int isbuiltin, int initial) { - if (_Py_IsMainInterpreter(interp)) { - assert(!static_builtin_index_is_set(self)); - static_builtin_index_set(self, interp->types.num_builtins_initialized); + size_t index; + if (initial) { + assert(!managed_static_type_index_is_set(self)); + if (isbuiltin) { + index = interp->types.builtins.num_initialized; + assert(index < _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES); + } + else { + PyMutex_Lock(&interp->types.mutex); + index = interp->types.for_extensions.next_index; + interp->types.for_extensions.next_index++; + PyMutex_Unlock(&interp->types.mutex); + assert(index < _Py_MAX_MANAGED_STATIC_EXT_TYPES); + } + managed_static_type_index_set(self, index); } else { - assert(static_builtin_index_get(self) == - interp->types.num_builtins_initialized); + index = managed_static_type_index_get(self); + if (isbuiltin) { + assert(index == interp->types.builtins.num_initialized); + assert(index < _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES); + } + else { + assert(index < _Py_MAX_MANAGED_STATIC_EXT_TYPES); + } } - static_builtin_state *state = static_builtin_state_get(interp, self); - /* It should only be called once for each builtin type. */ + managed_static_type_state *state = isbuiltin + ? &(interp->types.builtins.initialized[index]) + : &(interp->types.for_extensions.initialized[index]); + + /* It should only be called once for each builtin type per interpreter. */ assert(state->type == NULL); state->type = self; + state->isbuiltin = isbuiltin; /* state->tp_subclasses is left NULL until init_subclasses() sets it. */ /* state->tp_weaklist is left NULL until insert_head() or insert_after() (in weakrefobject.c) sets it. */ - interp->types.num_builtins_initialized++; + if (isbuiltin) { + interp->types.builtins.num_initialized++; + } + else { + interp->types.for_extensions.num_initialized++; + } } /* Reset the type's per-interpreter state. - This basically undoes what static_builtin_state_init() did. */ + This basically undoes what managed_static_type_state_init() did. */ static void -static_builtin_state_clear(PyInterpreterState *interp, PyTypeObject *self) +managed_static_type_state_clear(PyInterpreterState *interp, PyTypeObject *self, + int isbuiltin, int final) { - static_builtin_state *state = static_builtin_state_get(interp, self); + managed_static_type_state *state = isbuiltin + ? static_builtin_state_get(interp, self) + : static_ext_type_state_get(interp, self); assert(state->type != NULL); state->type = NULL; assert(state->tp_weaklist == NULL); // It was already cleared out. - if (_Py_IsMainInterpreter(interp)) { - static_builtin_index_clear(self); + if (final) { + managed_static_type_index_clear(self); } - assert(interp->types.num_builtins_initialized > 0); - interp->types.num_builtins_initialized--; + if (isbuiltin) { + assert(interp->types.builtins.num_initialized > 0); + interp->types.builtins.num_initialized--; + } + else { + PyMutex_Lock(&interp->types.mutex); + assert(interp->types.for_extensions.num_initialized > 0); + interp->types.for_extensions.num_initialized--; + if (interp->types.for_extensions.num_initialized == 0) { + interp->types.for_extensions.next_index = 0; + } + PyMutex_Unlock(&interp->types.mutex); + } } -// Also see _PyStaticType_InitBuiltin() and _PyStaticType_Dealloc(). +// Also see _PyStaticType_InitBuiltin() and _PyStaticType_FiniBuiltin(). /* end static builtin helpers */ @@ -227,7 +293,7 @@ start_readying(PyTypeObject *type) { if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { PyInterpreterState *interp = _PyInterpreterState_GET(); - static_builtin_state *state = static_builtin_state_get(interp, type); + managed_static_type_state *state = managed_static_type_state_get(interp, type); assert(state != NULL); assert(!state->readying); state->readying = 1; @@ -242,7 +308,7 @@ stop_readying(PyTypeObject *type) { if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { PyInterpreterState *interp = _PyInterpreterState_GET(); - static_builtin_state *state = static_builtin_state_get(interp, type); + managed_static_type_state *state = managed_static_type_state_get(interp, type); assert(state != NULL); assert(state->readying); state->readying = 0; @@ -257,7 +323,7 @@ is_readying(PyTypeObject *type) { if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { PyInterpreterState *interp = _PyInterpreterState_GET(); - static_builtin_state *state = static_builtin_state_get(interp, type); + managed_static_type_state *state = managed_static_type_state_get(interp, type); assert(state != NULL); return state->readying; } @@ -272,7 +338,7 @@ lookup_tp_dict(PyTypeObject *self) { if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { PyInterpreterState *interp = _PyInterpreterState_GET(); - static_builtin_state *state = _PyStaticType_GetState(interp, self); + managed_static_type_state *state = _PyStaticType_GetState(interp, self); assert(state != NULL); return state->tp_dict; } @@ -298,7 +364,7 @@ set_tp_dict(PyTypeObject *self, PyObject *dict) { if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { PyInterpreterState *interp = _PyInterpreterState_GET(); - static_builtin_state *state = _PyStaticType_GetState(interp, self); + managed_static_type_state *state = _PyStaticType_GetState(interp, self); assert(state != NULL); state->tp_dict = dict; return; @@ -311,7 +377,7 @@ clear_tp_dict(PyTypeObject *self) { if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { PyInterpreterState *interp = _PyInterpreterState_GET(); - static_builtin_state *state = _PyStaticType_GetState(interp, self); + managed_static_type_state *state = _PyStaticType_GetState(interp, self); assert(state != NULL); Py_CLEAR(state->tp_dict); return; @@ -340,13 +406,13 @@ _PyType_GetBases(PyTypeObject *self) } static inline void -set_tp_bases(PyTypeObject *self, PyObject *bases) +set_tp_bases(PyTypeObject *self, PyObject *bases, int initial) { assert(PyTuple_CheckExact(bases)); if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { // XXX tp_bases can probably be statically allocated for each // static builtin type. - assert(_Py_IsMainInterpreter(_PyInterpreterState_GET())); + assert(initial); assert(self->tp_bases == NULL); if (PyTuple_GET_SIZE(bases) == 0) { assert(self->tp_base == NULL); @@ -363,10 +429,10 @@ set_tp_bases(PyTypeObject *self, PyObject *bases) } static inline void -clear_tp_bases(PyTypeObject *self) +clear_tp_bases(PyTypeObject *self, int final) { if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { - if (_Py_IsMainInterpreter(_PyInterpreterState_GET())) { + if (final) { if (self->tp_bases != NULL) { if (PyTuple_GET_SIZE(self->tp_bases) == 0) { Py_CLEAR(self->tp_bases); @@ -413,13 +479,13 @@ _PyType_GetMRO(PyTypeObject *self) } static inline void -set_tp_mro(PyTypeObject *self, PyObject *mro) +set_tp_mro(PyTypeObject *self, PyObject *mro, int initial) { assert(PyTuple_CheckExact(mro)); if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { // XXX tp_mro can probably be statically allocated for each // static builtin type. - assert(_Py_IsMainInterpreter(_PyInterpreterState_GET())); + assert(initial); assert(self->tp_mro == NULL); /* Other checks are done via set_tp_bases. */ _Py_SetImmortal(mro); @@ -428,10 +494,10 @@ set_tp_mro(PyTypeObject *self, PyObject *mro) } static inline void -clear_tp_mro(PyTypeObject *self) +clear_tp_mro(PyTypeObject *self, int final) { if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { - if (_Py_IsMainInterpreter(_PyInterpreterState_GET())) { + if (final) { if (self->tp_mro != NULL) { if (PyTuple_GET_SIZE(self->tp_mro) == 0) { Py_CLEAR(self->tp_mro); @@ -457,7 +523,7 @@ init_tp_subclasses(PyTypeObject *self) } if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { PyInterpreterState *interp = _PyInterpreterState_GET(); - static_builtin_state *state = _PyStaticType_GetState(interp, self); + managed_static_type_state *state = _PyStaticType_GetState(interp, self); state->tp_subclasses = subclasses; return subclasses; } @@ -473,7 +539,7 @@ clear_tp_subclasses(PyTypeObject *self) has no subclass. */ if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { PyInterpreterState *interp = _PyInterpreterState_GET(); - static_builtin_state *state = _PyStaticType_GetState(interp, self); + managed_static_type_state *state = _PyStaticType_GetState(interp, self); Py_CLEAR(state->tp_subclasses); return; } @@ -485,7 +551,7 @@ lookup_tp_subclasses(PyTypeObject *self) { if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { PyInterpreterState *interp = _PyInterpreterState_GET(); - static_builtin_state *state = _PyStaticType_GetState(interp, self); + managed_static_type_state *state = _PyStaticType_GetState(interp, self); assert(state != NULL); return state->tp_subclasses; } @@ -774,10 +840,10 @@ _PyTypes_Fini(PyInterpreterState *interp) struct type_cache *cache = &interp->types.type_cache; type_cache_clear(cache, NULL); - assert(interp->types.num_builtins_initialized == 0); + assert(interp->types.builtins.num_initialized == 0); // All the static builtin types should have been finalized already. - for (size_t i = 0; i < _Py_MAX_STATIC_BUILTIN_TYPES; i++) { - assert(interp->types.builtins[i].type == NULL); + for (size_t i = 0; i < _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES; i++) { + assert(interp->types.builtins.initialized[i].type == NULL); } } @@ -1444,7 +1510,7 @@ mro_hierarchy(PyTypeObject *type, PyObject *temp) Py_XDECREF(tuple); if (res < 0) { - set_tp_mro(type, old_mro); + set_tp_mro(type, old_mro, 0); Py_DECREF(new_mro); return -1; } @@ -1545,7 +1611,7 @@ type_set_bases_unlocked(PyTypeObject *type, PyObject *new_bases, void *context) assert(old_bases != NULL); PyTypeObject *old_base = type->tp_base; - set_tp_bases(type, Py_NewRef(new_bases)); + set_tp_bases(type, Py_NewRef(new_bases), 0); type->tp_base = (PyTypeObject *)Py_NewRef(new_base); PyObject *temp = PyList_New(0); @@ -1593,7 +1659,7 @@ type_set_bases_unlocked(PyTypeObject *type, PyObject *new_bases, void *context) "", 2, 3, &cls, &new_mro, &old_mro); /* Do not rollback if cls has a newer version of MRO. */ if (lookup_tp_mro(cls) == new_mro) { - set_tp_mro(cls, Py_XNewRef(old_mro)); + set_tp_mro(cls, Py_XNewRef(old_mro), 0); Py_DECREF(new_mro); } } @@ -1603,7 +1669,7 @@ type_set_bases_unlocked(PyTypeObject *type, PyObject *new_bases, void *context) if (lookup_tp_bases(type) == new_bases) { assert(type->tp_base == new_base); - set_tp_bases(type, old_bases); + set_tp_bases(type, old_bases, 0); type->tp_base = old_base; Py_DECREF(new_bases); @@ -2977,7 +3043,7 @@ mro_invoke(PyTypeObject *type) - Returns -1 in case of an error. */ static int -mro_internal_unlocked(PyTypeObject *type, PyObject **p_old_mro) +mro_internal_unlocked(PyTypeObject *type, int initial, PyObject **p_old_mro) { ASSERT_TYPE_LOCK_HELD(); @@ -3000,7 +3066,7 @@ mro_internal_unlocked(PyTypeObject *type, PyObject **p_old_mro) return 0; } - set_tp_mro(type, new_mro); + set_tp_mro(type, new_mro, initial); type_mro_modified(type, new_mro); /* corner case: the super class might have been hidden @@ -3030,7 +3096,7 @@ mro_internal(PyTypeObject *type, PyObject **p_old_mro) { int res; BEGIN_TYPE_LOCK() - res = mro_internal_unlocked(type, p_old_mro); + res = mro_internal_unlocked(type, 0, p_old_mro); END_TYPE_LOCK() return res; } @@ -3625,7 +3691,7 @@ type_new_alloc(type_new_ctx *ctx) type->tp_as_mapping = &et->as_mapping; type->tp_as_buffer = &et->as_buffer; - set_tp_bases(type, Py_NewRef(ctx->bases)); + set_tp_bases(type, Py_NewRef(ctx->bases), 1); type->tp_base = (PyTypeObject *)Py_NewRef(ctx->base); type->tp_dealloc = subtype_dealloc; @@ -4619,7 +4685,7 @@ _PyType_FromMetaclass_impl( /* Set slots we have prepared */ type->tp_base = (PyTypeObject *)Py_NewRef(base); - set_tp_bases(type, bases); + set_tp_bases(type, bases, 1); bases = NULL; // We give our reference to bases to the type type->tp_doc = tp_doc; @@ -5524,7 +5590,7 @@ type_dealloc_common(PyTypeObject *type) static void -clear_static_tp_subclasses(PyTypeObject *type) +clear_static_tp_subclasses(PyTypeObject *type, int isbuiltin) { PyObject *subclasses = lookup_tp_subclasses(type); if (subclasses == NULL) { @@ -5561,47 +5627,64 @@ clear_static_tp_subclasses(PyTypeObject *type) continue; } // All static builtin subtypes should have been finalized already. - assert(!(subclass->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN)); + assert(!isbuiltin || !(subclass->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN)); Py_DECREF(subclass); } +#else + (void)isbuiltin; #endif clear_tp_subclasses(type); } static void -clear_static_type_objects(PyInterpreterState *interp, PyTypeObject *type) +clear_static_type_objects(PyInterpreterState *interp, PyTypeObject *type, + int isbuiltin, int final) { - if (_Py_IsMainInterpreter(interp)) { + if (final) { Py_CLEAR(type->tp_cache); } clear_tp_dict(type); - clear_tp_bases(type); - clear_tp_mro(type); - clear_static_tp_subclasses(type); + clear_tp_bases(type, final); + clear_tp_mro(type, final); + clear_static_tp_subclasses(type, isbuiltin); } -void -_PyStaticType_Dealloc(PyInterpreterState *interp, PyTypeObject *type) + +static void +fini_static_type(PyInterpreterState *interp, PyTypeObject *type, + int isbuiltin, int final) { assert(type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN); assert(_Py_IsImmortal((PyObject *)type)); type_dealloc_common(type); - clear_static_type_objects(interp, type); + clear_static_type_objects(interp, type, isbuiltin, final); - if (_Py_IsMainInterpreter(interp)) { + if (final) { type->tp_flags &= ~Py_TPFLAGS_READY; type->tp_flags &= ~Py_TPFLAGS_VALID_VERSION_TAG; type->tp_version_tag = 0; } _PyStaticType_ClearWeakRefs(interp, type); - static_builtin_state_clear(interp, type); + managed_static_type_state_clear(interp, type, isbuiltin, final); /* We leave _Py_TPFLAGS_STATIC_BUILTIN set on tp_flags. */ } +void +_PyStaticType_FiniForExtension(PyInterpreterState *interp, PyTypeObject *type, int final) +{ + fini_static_type(interp, type, 0, final); +} + +void +_PyStaticType_FiniBuiltin(PyInterpreterState *interp, PyTypeObject *type) +{ + fini_static_type(interp, type, 1, _Py_IsMainInterpreter(interp)); +} + static void type_dealloc(PyObject *self) @@ -7655,10 +7738,10 @@ type_ready_set_type(PyTypeObject *type) } static int -type_ready_set_bases(PyTypeObject *type) +type_ready_set_bases(PyTypeObject *type, int initial) { if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { - if (!_Py_IsMainInterpreter(_PyInterpreterState_GET())) { + if (!initial) { assert(lookup_tp_bases(type) != NULL); return 0; } @@ -7677,7 +7760,7 @@ type_ready_set_bases(PyTypeObject *type) if (bases == NULL) { return -1; } - set_tp_bases(type, bases); + set_tp_bases(type, bases, 1); } return 0; } @@ -7787,12 +7870,12 @@ type_ready_preheader(PyTypeObject *type) } static int -type_ready_mro(PyTypeObject *type) +type_ready_mro(PyTypeObject *type, int initial) { ASSERT_TYPE_LOCK_HELD(); if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) { - if (!_Py_IsMainInterpreter(_PyInterpreterState_GET())) { + if (!initial) { assert(lookup_tp_mro(type) != NULL); return 0; } @@ -7800,7 +7883,7 @@ type_ready_mro(PyTypeObject *type) } /* Calculate method resolution order */ - if (mro_internal_unlocked(type, NULL) < 0) { + if (mro_internal_unlocked(type, initial, NULL) < 0) { return -1; } PyObject *mro = lookup_tp_mro(type); @@ -7955,7 +8038,7 @@ type_ready_add_subclasses(PyTypeObject *type) // Set tp_new and the "__new__" key in the type dictionary. // Use the Py_TPFLAGS_DISALLOW_INSTANTIATION flag. static int -type_ready_set_new(PyTypeObject *type, int rerunbuiltin) +type_ready_set_new(PyTypeObject *type, int initial) { PyTypeObject *base = type->tp_base; /* The condition below could use some explanation. @@ -7977,7 +8060,7 @@ type_ready_set_new(PyTypeObject *type, int rerunbuiltin) if (!(type->tp_flags & Py_TPFLAGS_DISALLOW_INSTANTIATION)) { if (type->tp_new != NULL) { - if (!rerunbuiltin || base == NULL || type->tp_new != base->tp_new) { + if (initial || base == NULL || type->tp_new != base->tp_new) { // If "__new__" key does not exists in the type dictionary, // set it to tp_new_wrapper(). if (add_tp_new_wrapper(type) < 0) { @@ -8059,7 +8142,7 @@ type_ready_post_checks(PyTypeObject *type) static int -type_ready(PyTypeObject *type, int rerunbuiltin) +type_ready(PyTypeObject *type, int initial) { ASSERT_TYPE_LOCK_HELD(); @@ -8089,19 +8172,19 @@ type_ready(PyTypeObject *type, int rerunbuiltin) if (type_ready_set_type(type) < 0) { goto error; } - if (type_ready_set_bases(type) < 0) { + if (type_ready_set_bases(type, initial) < 0) { goto error; } - if (type_ready_mro(type) < 0) { + if (type_ready_mro(type, initial) < 0) { goto error; } - if (type_ready_set_new(type, rerunbuiltin) < 0) { + if (type_ready_set_new(type, initial) < 0) { goto error; } if (type_ready_fill_dict(type) < 0) { goto error; } - if (!rerunbuiltin) { + if (initial) { if (type_ready_inherit(type) < 0) { goto error; } @@ -8115,7 +8198,7 @@ type_ready(PyTypeObject *type, int rerunbuiltin) if (type_ready_add_subclasses(type) < 0) { goto error; } - if (!rerunbuiltin) { + if (initial) { if (type_ready_managed_dict(type) < 0) { goto error; } @@ -8155,7 +8238,7 @@ PyType_Ready(PyTypeObject *type) int res; BEGIN_TYPE_LOCK() if (!(type->tp_flags & Py_TPFLAGS_READY)) { - res = type_ready(type, 0); + res = type_ready(type, 1); } else { res = 0; assert(_PyType_CheckConsistency(type)); @@ -8164,17 +8247,18 @@ PyType_Ready(PyTypeObject *type) return res; } -int -_PyStaticType_InitBuiltin(PyInterpreterState *interp, PyTypeObject *self) + +static int +init_static_type(PyInterpreterState *interp, PyTypeObject *self, + int isbuiltin, int initial) { assert(_Py_IsImmortal((PyObject *)self)); assert(!(self->tp_flags & Py_TPFLAGS_HEAPTYPE)); assert(!(self->tp_flags & Py_TPFLAGS_MANAGED_DICT)); assert(!(self->tp_flags & Py_TPFLAGS_MANAGED_WEAKREF)); - int ismain = _Py_IsMainInterpreter(interp); if ((self->tp_flags & Py_TPFLAGS_READY) == 0) { - assert(ismain); + assert(initial); self->tp_flags |= _Py_TPFLAGS_STATIC_BUILTIN; self->tp_flags |= Py_TPFLAGS_IMMUTABLETYPE; @@ -8184,24 +8268,36 @@ _PyStaticType_InitBuiltin(PyInterpreterState *interp, PyTypeObject *self) self->tp_flags |= Py_TPFLAGS_VALID_VERSION_TAG; } else { - assert(!ismain); + assert(!initial); assert(self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN); assert(self->tp_flags & Py_TPFLAGS_VALID_VERSION_TAG); } - static_builtin_state_init(interp, self); + managed_static_type_state_init(interp, self, isbuiltin, initial); int res; BEGIN_TYPE_LOCK(); - res = type_ready(self, !ismain); + res = type_ready(self, initial); END_TYPE_LOCK() if (res < 0) { _PyStaticType_ClearWeakRefs(interp, self); - static_builtin_state_clear(interp, self); + managed_static_type_state_clear(interp, self, isbuiltin, initial); } return res; } +int +_PyStaticType_InitForExtension(PyInterpreterState *interp, PyTypeObject *self) +{ + return init_static_type(interp, self, 0, ((self->tp_flags & Py_TPFLAGS_READY) == 0)); +} + +int +_PyStaticType_InitBuiltin(PyInterpreterState *interp, PyTypeObject *self) +{ + return init_static_type(interp, self, 1, _Py_IsMainInterpreter(interp)); +} + static int add_subclass(PyTypeObject *base, PyTypeObject *type) diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c index 240f4e7..59ca344 100644 --- a/Objects/unicodeobject.c +++ b/Objects/unicodeobject.c @@ -15510,9 +15510,9 @@ unicode_is_finalizing(void) void _PyUnicode_FiniTypes(PyInterpreterState *interp) { - _PyStaticType_Dealloc(interp, &EncodingMapType); - _PyStaticType_Dealloc(interp, &PyFieldNameIter_Type); - _PyStaticType_Dealloc(interp, &PyFormatterIter_Type); + _PyStaticType_FiniBuiltin(interp, &EncodingMapType); + _PyStaticType_FiniBuiltin(interp, &PyFieldNameIter_Type); + _PyStaticType_FiniBuiltin(interp, &PyFormatterIter_Type); } diff --git a/Objects/weakrefobject.c b/Objects/weakrefobject.c index 88afaec..3b027e1 100644 --- a/Objects/weakrefobject.c +++ b/Objects/weakrefobject.c @@ -1066,7 +1066,7 @@ PyObject_ClearWeakRefs(PyObject *object) void _PyStaticType_ClearWeakRefs(PyInterpreterState *interp, PyTypeObject *type) { - static_builtin_state *state = _PyStaticType_GetState(interp, type); + managed_static_type_state *state = _PyStaticType_GetState(interp, type); PyObject **list = _PyStaticType_GET_WEAKREFS_LISTPTR(state); // This is safe to do without holding the lock in free-threaded builds; // there is only one thread running and no new threads can be created. diff --git a/Python/crossinterp_exceptions.h b/Python/crossinterp_exceptions.h index 6ecc10c..278511d 100644 --- a/Python/crossinterp_exceptions.h +++ b/Python/crossinterp_exceptions.h @@ -90,6 +90,6 @@ static void fini_exceptions(PyInterpreterState *interp) { // Likewise with _fini_not_shareable_error_type(). - _PyStaticType_Dealloc(interp, &_PyExc_InterpreterNotFoundError); - _PyStaticType_Dealloc(interp, &_PyExc_InterpreterError); + _PyStaticType_FiniBuiltin(interp, &_PyExc_InterpreterNotFoundError); + _PyStaticType_FiniBuiltin(interp, &_PyExc_InterpreterError); } diff --git a/Tools/c-analyzer/cpython/globals-to-fix.tsv b/Tools/c-analyzer/cpython/globals-to-fix.tsv index e579c14..aeb7cad 100644 --- a/Tools/c-analyzer/cpython/globals-to-fix.tsv +++ b/Tools/c-analyzer/cpython/globals-to-fix.tsv @@ -307,6 +307,7 @@ Python/crossinterp_exceptions.h - PyExc_InterpreterNotFoundError - Modules/_datetimemodule.c - zero_delta - Modules/_datetimemodule.c - utc_timezone - Modules/_datetimemodule.c - capi - +Modules/_datetimemodule.c - _globals - Objects/boolobject.c - _Py_FalseStruct - Objects/boolobject.c - _Py_TrueStruct - Objects/dictobject.c - empty_keys_struct - diff --git a/Tools/c-analyzer/cpython/ignored.tsv b/Tools/c-analyzer/cpython/ignored.tsv index a1c1553..adb7f8e 100644 --- a/Tools/c-analyzer/cpython/ignored.tsv +++ b/Tools/c-analyzer/cpython/ignored.tsv @@ -217,6 +217,7 @@ Modules/_datetimemodule.c - max_fold_seconds - Modules/_datetimemodule.c datetime_isoformat specs - Modules/_datetimemodule.c parse_hh_mm_ss_ff correction - Modules/_datetimemodule.c time_isoformat specs - +Modules/_datetimemodule.c - capi_types - Modules/_decimal/_decimal.c - cond_map_template - Modules/_decimal/_decimal.c - dec_signal_string - Modules/_decimal/_decimal.c - dflt_ctx - -- cgit v0.12