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bpo-35134: Create Include/cpython/object.h (GH-10679) 

* Move object.h code surrounded by "#ifndef Py_LIMITED_API"
  to a new Include/cpython/object.h header file.
* "typedef struct _typeobject PyTypeObject;" is now always defined
  in object.h, but if Py_LIMITED_API is not defined,
  Include/cpython/object.h also defines the structure.
* Complete the printfunc comment to mention Py_LIMITED_API define.
This commit is contained in:
Victor Stinner 2018-11-26 17:09:16 +01:00 committed by GitHub
parent 282c03d45d
commit 6eb996685e
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2 changed files with 460 additions and 485 deletions
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454
Include/cpython/object.h Normal file
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@ -0,0 +1,454 @@
#ifndef Py_CPYTHON_OBJECT_H
# error "this header file must not be included directly"
#endif
#ifdef __cplusplus
extern "C" {
#endif
/********************* String Literals ****************************************/
/* This structure helps managing static strings. The basic usage goes like this:
Instead of doing
r = PyObject_CallMethod(o, "foo", "args", ...);
do
_Py_IDENTIFIER(foo);
...
r = _PyObject_CallMethodId(o, &PyId_foo, "args", ...);
PyId_foo is a static variable, either on block level or file level. On first
usage, the string "foo" is interned, and the structures are linked. On interpreter
shutdown, all strings are released (through _PyUnicode_ClearStaticStrings).
Alternatively, _Py_static_string allows choosing the variable name.
_PyUnicode_FromId returns a borrowed reference to the interned string.
_PyObject_{Get,Set,Has}AttrId are __getattr__ versions using _Py_Identifier*.
*/
typedef struct _Py_Identifier {
struct _Py_Identifier *next;
const char* string;
PyObject *object;
} _Py_Identifier;
#define _Py_static_string_init(value) { .next = NULL, .string = value, .object = NULL }
#define _Py_static_string(varname, value) static _Py_Identifier varname = _Py_static_string_init(value)
#define _Py_IDENTIFIER(varname) _Py_static_string(PyId_##varname, #varname)
/* buffer interface */
typedef struct bufferinfo {
void *buf;
PyObject *obj; /* owned reference */
Py_ssize_t len;
Py_ssize_t itemsize; /* This is Py_ssize_t so it can be
pointed to by strides in simple case.*/
int readonly;
int ndim;
char *format;
Py_ssize_t *shape;
Py_ssize_t *strides;
Py_ssize_t *suboffsets;
void *internal;
} Py_buffer;
typedef int (*getbufferproc)(PyObject *, Py_buffer *, int);
typedef void (*releasebufferproc)(PyObject *, Py_buffer *);
/* Maximum number of dimensions */
#define PyBUF_MAX_NDIM 64
/* Flags for getting buffers */
#define PyBUF_SIMPLE 0
#define PyBUF_WRITABLE 0x0001
/* we used to include an E, backwards compatible alias */
#define PyBUF_WRITEABLE PyBUF_WRITABLE
#define PyBUF_FORMAT 0x0004
#define PyBUF_ND 0x0008
#define PyBUF_STRIDES (0x0010 | PyBUF_ND)
#define PyBUF_C_CONTIGUOUS (0x0020 | PyBUF_STRIDES)
#define PyBUF_F_CONTIGUOUS (0x0040 | PyBUF_STRIDES)
#define PyBUF_ANY_CONTIGUOUS (0x0080 | PyBUF_STRIDES)
#define PyBUF_INDIRECT (0x0100 | PyBUF_STRIDES)
#define PyBUF_CONTIG (PyBUF_ND | PyBUF_WRITABLE)
#define PyBUF_CONTIG_RO (PyBUF_ND)
#define PyBUF_STRIDED (PyBUF_STRIDES | PyBUF_WRITABLE)
#define PyBUF_STRIDED_RO (PyBUF_STRIDES)
#define PyBUF_RECORDS (PyBUF_STRIDES | PyBUF_WRITABLE | PyBUF_FORMAT)
#define PyBUF_RECORDS_RO (PyBUF_STRIDES | PyBUF_FORMAT)
#define PyBUF_FULL (PyBUF_INDIRECT | PyBUF_WRITABLE | PyBUF_FORMAT)
#define PyBUF_FULL_RO (PyBUF_INDIRECT | PyBUF_FORMAT)
#define PyBUF_READ 0x100
#define PyBUF_WRITE 0x200
/* End buffer interface */
typedef struct {
/* Number implementations must check *both*
arguments for proper type and implement the necessary conversions
in the slot functions themselves. */
binaryfunc nb_add;
binaryfunc nb_subtract;
binaryfunc nb_multiply;
binaryfunc nb_remainder;
binaryfunc nb_divmod;
ternaryfunc nb_power;
unaryfunc nb_negative;
unaryfunc nb_positive;
unaryfunc nb_absolute;
inquiry nb_bool;
unaryfunc nb_invert;
binaryfunc nb_lshift;
binaryfunc nb_rshift;
binaryfunc nb_and;
binaryfunc nb_xor;
binaryfunc nb_or;
unaryfunc nb_int;
void *nb_reserved; /* the slot formerly known as nb_long */
unaryfunc nb_float;
binaryfunc nb_inplace_add;
binaryfunc nb_inplace_subtract;
binaryfunc nb_inplace_multiply;
binaryfunc nb_inplace_remainder;
ternaryfunc nb_inplace_power;
binaryfunc nb_inplace_lshift;
binaryfunc nb_inplace_rshift;
binaryfunc nb_inplace_and;
binaryfunc nb_inplace_xor;
binaryfunc nb_inplace_or;
binaryfunc nb_floor_divide;
binaryfunc nb_true_divide;
binaryfunc nb_inplace_floor_divide;
binaryfunc nb_inplace_true_divide;
unaryfunc nb_index;
binaryfunc nb_matrix_multiply;
binaryfunc nb_inplace_matrix_multiply;
} PyNumberMethods;
typedef struct {
lenfunc sq_length;
binaryfunc sq_concat;
ssizeargfunc sq_repeat;
ssizeargfunc sq_item;
void *was_sq_slice;
ssizeobjargproc sq_ass_item;
void *was_sq_ass_slice;
objobjproc sq_contains;
binaryfunc sq_inplace_concat;
ssizeargfunc sq_inplace_repeat;
} PySequenceMethods;
typedef struct {
lenfunc mp_length;
binaryfunc mp_subscript;
objobjargproc mp_ass_subscript;
} PyMappingMethods;
typedef struct {
unaryfunc am_await;
unaryfunc am_aiter;
unaryfunc am_anext;
} PyAsyncMethods;
typedef struct {
getbufferproc bf_getbuffer;
releasebufferproc bf_releasebuffer;
} PyBufferProcs;
/* We can't provide a full compile-time check that limited-API
users won't implement tp_print. However, not defining printfunc
and making tp_print of a different function pointer type
if Py_LIMITED_API is set should at least cause a warning
in most cases. */
typedef int (*printfunc)(PyObject *, FILE *, int);
typedef struct _typeobject {
PyObject_VAR_HEAD
const char *tp_name; /* For printing, in format "<module>.<name>" */
Py_ssize_t tp_basicsize, tp_itemsize; /* For allocation */
/* Methods to implement standard operations */
destructor tp_dealloc;
printfunc tp_print;
getattrfunc tp_getattr;
setattrfunc tp_setattr;
PyAsyncMethods *tp_as_async; /* formerly known as tp_compare (Python 2)
or tp_reserved (Python 3) */
reprfunc tp_repr;
/* Method suites for standard classes */
PyNumberMethods *tp_as_number;
PySequenceMethods *tp_as_sequence;
PyMappingMethods *tp_as_mapping;
/* More standard operations (here for binary compatibility) */
hashfunc tp_hash;
ternaryfunc tp_call;
reprfunc tp_str;
getattrofunc tp_getattro;
setattrofunc tp_setattro;
/* Functions to access object as input/output buffer */
PyBufferProcs *tp_as_buffer;
/* Flags to define presence of optional/expanded features */
unsigned long tp_flags;
const char *tp_doc; /* Documentation string */
/* Assigned meaning in release 2.0 */
/* call function for all accessible objects */
traverseproc tp_traverse;
/* delete references to contained objects */
inquiry tp_clear;
/* Assigned meaning in release 2.1 */
/* rich comparisons */
richcmpfunc tp_richcompare;
/* weak reference enabler */
Py_ssize_t tp_weaklistoffset;
/* Iterators */
getiterfunc tp_iter;
iternextfunc tp_iternext;
/* Attribute descriptor and subclassing stuff */
struct PyMethodDef *tp_methods;
struct PyMemberDef *tp_members;
struct PyGetSetDef *tp_getset;
struct _typeobject *tp_base;
PyObject *tp_dict;
descrgetfunc tp_descr_get;
descrsetfunc tp_descr_set;
Py_ssize_t tp_dictoffset;
initproc tp_init;
allocfunc tp_alloc;
newfunc tp_new;
freefunc tp_free; /* Low-level free-memory routine */
inquiry tp_is_gc; /* For PyObject_IS_GC */
PyObject *tp_bases;
PyObject *tp_mro; /* method resolution order */
PyObject *tp_cache;
PyObject *tp_subclasses;
PyObject *tp_weaklist;
destructor tp_del;
/* Type attribute cache version tag. Added in version 2.6 */
unsigned int tp_version_tag;
destructor tp_finalize;
#ifdef COUNT_ALLOCS
/* these must be last and never explicitly initialized */
Py_ssize_t tp_allocs;
Py_ssize_t tp_frees;
Py_ssize_t tp_maxalloc;
struct _typeobject *tp_prev;
struct _typeobject *tp_next;
#endif
} PyTypeObject;
/* The *real* layout of a type object when allocated on the heap */
typedef struct _heaptypeobject {
/* Note: there's a dependency on the order of these members
in slotptr() in typeobject.c . */
PyTypeObject ht_type;
PyAsyncMethods as_async;
PyNumberMethods as_number;
PyMappingMethods as_mapping;
PySequenceMethods as_sequence; /* as_sequence comes after as_mapping,
so that the mapping wins when both
the mapping and the sequence define
a given operator (e.g. __getitem__).
see add_operators() in typeobject.c . */
PyBufferProcs as_buffer;
PyObject *ht_name, *ht_slots, *ht_qualname;
struct _dictkeysobject *ht_cached_keys;
/* here are optional user slots, followed by the members. */
} PyHeapTypeObject;
/* access macro to the members which are floating "behind" the object */
#define PyHeapType_GET_MEMBERS(etype) \
((PyMemberDef *)(((char *)etype) + Py_TYPE(etype)->tp_basicsize))
PyAPI_FUNC(const char *) _PyType_Name(PyTypeObject *);
PyAPI_FUNC(PyObject *) _PyType_Lookup(PyTypeObject *, PyObject *);
PyAPI_FUNC(PyObject *) _PyType_LookupId(PyTypeObject *, _Py_Identifier *);
PyAPI_FUNC(PyObject *) _PyObject_LookupSpecial(PyObject *, _Py_Identifier *);
PyAPI_FUNC(PyTypeObject *) _PyType_CalculateMetaclass(PyTypeObject *, PyObject *);
PyAPI_FUNC(PyObject *) _PyType_GetDocFromInternalDoc(const char *, const char *);
PyAPI_FUNC(PyObject *) _PyType_GetTextSignatureFromInternalDoc(const char *, const char *);
struct _Py_Identifier;
PyAPI_FUNC(int) PyObject_Print(PyObject *, FILE *, int);
PyAPI_FUNC(void) _Py_BreakPoint(void);
PyAPI_FUNC(void) _PyObject_Dump(PyObject *);
PyAPI_FUNC(int) _PyObject_IsFreed(PyObject *);
PyAPI_FUNC(int) _PyObject_IsAbstract(PyObject *);
PyAPI_FUNC(PyObject *) _PyObject_GetAttrId(PyObject *, struct _Py_Identifier *);
PyAPI_FUNC(int) _PyObject_SetAttrId(PyObject *, struct _Py_Identifier *, PyObject *);
PyAPI_FUNC(int) _PyObject_HasAttrId(PyObject *, struct _Py_Identifier *);
/* Replacements of PyObject_GetAttr() and _PyObject_GetAttrId() which
don't raise AttributeError.
Return 1 and set *result != NULL if an attribute is found.
Return 0 and set *result == NULL if an attribute is not found;
an AttributeError is silenced.
Return -1 and set *result == NULL if an error other than AttributeError
is raised.
*/
PyAPI_FUNC(int) _PyObject_LookupAttr(PyObject *, PyObject *, PyObject **);
PyAPI_FUNC(int) _PyObject_LookupAttrId(PyObject *, struct _Py_Identifier *, PyObject **);
PyAPI_FUNC(PyObject **) _PyObject_GetDictPtr(PyObject *);
PyAPI_FUNC(PyObject *) _PyObject_NextNotImplemented(PyObject *);
PyAPI_FUNC(void) PyObject_CallFinalizer(PyObject *);
PyAPI_FUNC(int) PyObject_CallFinalizerFromDealloc(PyObject *);
/* Same as PyObject_Generic{Get,Set}Attr, but passing the attributes
dict as the last parameter. */
PyAPI_FUNC(PyObject *)
_PyObject_GenericGetAttrWithDict(PyObject *, PyObject *, PyObject *, int);
PyAPI_FUNC(int)
_PyObject_GenericSetAttrWithDict(PyObject *, PyObject *,
PyObject *, PyObject *);
/* Helper to look up a builtin object */
PyAPI_FUNC(PyObject *) _PyObject_GetBuiltin(const char *name);
#define PyType_HasFeature(t,f) (((t)->tp_flags & (f)) != 0)
static inline void _Py_Dealloc_inline(PyObject *op)
{
destructor dealloc = Py_TYPE(op)->tp_dealloc;
#ifdef Py_TRACE_REFS
_Py_ForgetReference(op);
#else
_Py_INC_TPFREES(op);
#endif
(*dealloc)(op);
}
#define _Py_Dealloc(op) _Py_Dealloc_inline(op)
/* Safely decref `op` and set `op` to `op2`.
*
* As in case of Py_CLEAR "the obvious" code can be deadly:
*
* Py_DECREF(op);
* op = op2;
*
* The safe way is:
*
* Py_SETREF(op, op2);
*
* That arranges to set `op` to `op2` _before_ decref'ing, so that any code
* triggered as a side-effect of `op` getting torn down no longer believes
* `op` points to a valid object.
*
* Py_XSETREF is a variant of Py_SETREF that uses Py_XDECREF instead of
* Py_DECREF.
*/
#define Py_SETREF(op, op2) \
do { \
PyObject *_py_tmp = _PyObject_CAST(op); \
(op) = (op2); \
Py_DECREF(_py_tmp); \
} while (0)
#define Py_XSETREF(op, op2) \
do { \
PyObject *_py_tmp = _PyObject_CAST(op); \
(op) = (op2); \
Py_XDECREF(_py_tmp); \
} while (0)
PyAPI_DATA(PyTypeObject) _PyNone_Type;
PyAPI_DATA(PyTypeObject) _PyNotImplemented_Type;
/* Maps Py_LT to Py_GT, ..., Py_GE to Py_LE.
* Defined in object.c.
*/
PyAPI_DATA(int) _Py_SwappedOp[];
/* This is the old private API, invoked by the macros before 3.2.4.
Kept for binary compatibility of extensions using the stable ABI. */
PyAPI_FUNC(void) _PyTrash_deposit_object(PyObject*);
PyAPI_FUNC(void) _PyTrash_destroy_chain(void);
PyAPI_FUNC(void)
_PyDebugAllocatorStats(FILE *out, const char *block_name, int num_blocks,
size_t sizeof_block);
PyAPI_FUNC(void)
_PyObject_DebugTypeStats(FILE *out);
/* Define a pair of assertion macros:
_PyObject_ASSERT_FROM(), _PyObject_ASSERT_WITH_MSG() and _PyObject_ASSERT().
These work like the regular C assert(), in that they will abort the
process with a message on stderr if the given condition fails to hold,
but compile away to nothing if NDEBUG is defined.
However, before aborting, Python will also try to call _PyObject_Dump() on
the given object. This may be of use when investigating bugs in which a
particular object is corrupt (e.g. buggy a tp_visit method in an extension
module breaking the garbage collector), to help locate the broken objects.
The WITH_MSG variant allows you to supply an additional message that Python
will attempt to print to stderr, after the object dump. */
#ifdef NDEBUG
/* No debugging: compile away the assertions: */
# define _PyObject_ASSERT_FROM(obj, expr, msg, filename, lineno, func) \
((void)0)
#else
/* With debugging: generate checks: */
# define _PyObject_ASSERT_FROM(obj, expr, msg, filename, lineno, func) \
((expr) \
? (void)(0) \
: _PyObject_AssertFailed((obj), Py_STRINGIFY(expr), \
(msg), (filename), (lineno), (func)))
#endif
#define _PyObject_ASSERT_WITH_MSG(obj, expr, msg) \
_PyObject_ASSERT_FROM(obj, expr, msg, __FILE__, __LINE__, __func__)
#define _PyObject_ASSERT(obj, expr) \
_PyObject_ASSERT_WITH_MSG(obj, expr, NULL)
#define _PyObject_ASSERT_FAILED_MSG(obj, msg) \
_PyObject_AssertFailed((obj), NULL, (msg), __FILE__, __LINE__, __func__)
/* Declare and define _PyObject_AssertFailed() even when NDEBUG is defined,
to avoid causing compiler/linker errors when building extensions without
NDEBUG against a Python built with NDEBUG defined.
msg, expr and function can be NULL. */
PyAPI_FUNC(void) _PyObject_AssertFailed(
PyObject *obj,
const char *expr,
const char *msg,
const char *file,
int line,
const char *function);
#ifdef __cplusplus
}
#endif

491
Include/object.h
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@ -127,39 +127,6 @@ typedef struct {
#define Py_TYPE(ob) (_PyObject_CAST(ob)->ob_type) #define Py_TYPE(ob) (_PyObject_CAST(ob)->ob_type)
#define Py_SIZE(ob) (_PyVarObject_CAST(ob)->ob_size) #define Py_SIZE(ob) (_PyVarObject_CAST(ob)->ob_size)
#ifndef Py_LIMITED_API
/********************* String Literals ****************************************/
/* This structure helps managing static strings. The basic usage goes like this:
Instead of doing
r = PyObject_CallMethod(o, "foo", "args", ...);
do
_Py_IDENTIFIER(foo);
...
r = _PyObject_CallMethodId(o, &PyId_foo, "args", ...);
PyId_foo is a static variable, either on block level or file level. On first
usage, the string "foo" is interned, and the structures are linked. On interpreter
shutdown, all strings are released (through _PyUnicode_ClearStaticStrings).
Alternatively, _Py_static_string allows choosing the variable name.
_PyUnicode_FromId returns a borrowed reference to the interned string.
_PyObject_{Get,Set,Has}AttrId are __getattr__ versions using _Py_Identifier*.
*/
typedef struct _Py_Identifier {
struct _Py_Identifier *next;
const char* string;
PyObject *object;
} _Py_Identifier;
#define _Py_static_string_init(value) { .next = NULL, .string = value, .object = NULL }
#define _Py_static_string(varname, value) static _Py_Identifier varname = _Py_static_string_init(value)
#define _Py_IDENTIFIER(varname) _Py_static_string(PyId_##varname, #varname)
#endif /* !Py_LIMITED_API */
/* /*
Type objects contain a string containing the type name (to help somewhat Type objects contain a string containing the type name (to help somewhat
in debugging), the allocation parameters (see PyObject_New() and in debugging), the allocation parameters (see PyObject_New() and
@ -186,154 +153,13 @@ typedef int(*ssizeobjargproc)(PyObject *, Py_ssize_t, PyObject *);
typedef int(*ssizessizeobjargproc)(PyObject *, Py_ssize_t, Py_ssize_t, PyObject *); typedef int(*ssizessizeobjargproc)(PyObject *, Py_ssize_t, Py_ssize_t, PyObject *);
typedef int(*objobjargproc)(PyObject *, PyObject *, PyObject *); typedef int(*objobjargproc)(PyObject *, PyObject *, PyObject *);
#ifndef Py_LIMITED_API
/* buffer interface */
typedef struct bufferinfo {
void *buf;
PyObject *obj; /* owned reference */
Py_ssize_t len;
Py_ssize_t itemsize; /* This is Py_ssize_t so it can be
pointed to by strides in simple case.*/
int readonly;
int ndim;
char *format;
Py_ssize_t *shape;
Py_ssize_t *strides;
Py_ssize_t *suboffsets;
void *internal;
} Py_buffer;
typedef int (*getbufferproc)(PyObject *, Py_buffer *, int);
typedef void (*releasebufferproc)(PyObject *, Py_buffer *);
/* Maximum number of dimensions */
#define PyBUF_MAX_NDIM 64
/* Flags for getting buffers */
#define PyBUF_SIMPLE 0
#define PyBUF_WRITABLE 0x0001
/* we used to include an E, backwards compatible alias */
#define PyBUF_WRITEABLE PyBUF_WRITABLE
#define PyBUF_FORMAT 0x0004
#define PyBUF_ND 0x0008
#define PyBUF_STRIDES (0x0010 | PyBUF_ND)
#define PyBUF_C_CONTIGUOUS (0x0020 | PyBUF_STRIDES)
#define PyBUF_F_CONTIGUOUS (0x0040 | PyBUF_STRIDES)
#define PyBUF_ANY_CONTIGUOUS (0x0080 | PyBUF_STRIDES)
#define PyBUF_INDIRECT (0x0100 | PyBUF_STRIDES)
#define PyBUF_CONTIG (PyBUF_ND | PyBUF_WRITABLE)
#define PyBUF_CONTIG_RO (PyBUF_ND)
#define PyBUF_STRIDED (PyBUF_STRIDES | PyBUF_WRITABLE)
#define PyBUF_STRIDED_RO (PyBUF_STRIDES)
#define PyBUF_RECORDS (PyBUF_STRIDES | PyBUF_WRITABLE | PyBUF_FORMAT)
#define PyBUF_RECORDS_RO (PyBUF_STRIDES | PyBUF_FORMAT)
#define PyBUF_FULL (PyBUF_INDIRECT | PyBUF_WRITABLE | PyBUF_FORMAT)
#define PyBUF_FULL_RO (PyBUF_INDIRECT | PyBUF_FORMAT)
#define PyBUF_READ 0x100
#define PyBUF_WRITE 0x200
/* End buffer interface */
#endif /* Py_LIMITED_API */
typedef int (*objobjproc)(PyObject *, PyObject *); typedef int (*objobjproc)(PyObject *, PyObject *);
typedef int (*visitproc)(PyObject *, void *); typedef int (*visitproc)(PyObject *, void *);
typedef int (*traverseproc)(PyObject *, visitproc, void *); typedef int (*traverseproc)(PyObject *, visitproc, void *);
#ifndef Py_LIMITED_API
typedef struct {
/* Number implementations must check *both*
arguments for proper type and implement the necessary conversions
in the slot functions themselves. */
binaryfunc nb_add;
binaryfunc nb_subtract;
binaryfunc nb_multiply;
binaryfunc nb_remainder;
binaryfunc nb_divmod;
ternaryfunc nb_power;
unaryfunc nb_negative;
unaryfunc nb_positive;
unaryfunc nb_absolute;
inquiry nb_bool;
unaryfunc nb_invert;
binaryfunc nb_lshift;
binaryfunc nb_rshift;
binaryfunc nb_and;
binaryfunc nb_xor;
binaryfunc nb_or;
unaryfunc nb_int;
void *nb_reserved; /* the slot formerly known as nb_long */
unaryfunc nb_float;
binaryfunc nb_inplace_add;
binaryfunc nb_inplace_subtract;
binaryfunc nb_inplace_multiply;
binaryfunc nb_inplace_remainder;
ternaryfunc nb_inplace_power;
binaryfunc nb_inplace_lshift;
binaryfunc nb_inplace_rshift;
binaryfunc nb_inplace_and;
binaryfunc nb_inplace_xor;
binaryfunc nb_inplace_or;
binaryfunc nb_floor_divide;
binaryfunc nb_true_divide;
binaryfunc nb_inplace_floor_divide;
binaryfunc nb_inplace_true_divide;
unaryfunc nb_index;
binaryfunc nb_matrix_multiply;
binaryfunc nb_inplace_matrix_multiply;
} PyNumberMethods;
typedef struct {
lenfunc sq_length;
binaryfunc sq_concat;
ssizeargfunc sq_repeat;
ssizeargfunc sq_item;
void *was_sq_slice;
ssizeobjargproc sq_ass_item;
void *was_sq_ass_slice;
objobjproc sq_contains;
binaryfunc sq_inplace_concat;
ssizeargfunc sq_inplace_repeat;
} PySequenceMethods;
typedef struct {
lenfunc mp_length;
binaryfunc mp_subscript;
objobjargproc mp_ass_subscript;
} PyMappingMethods;
typedef struct {
unaryfunc am_await;
unaryfunc am_aiter;
unaryfunc am_anext;
} PyAsyncMethods;
typedef struct {
getbufferproc bf_getbuffer;
releasebufferproc bf_releasebuffer;
} PyBufferProcs;
#endif /* Py_LIMITED_API */
typedef void (*freefunc)(void *); typedef void (*freefunc)(void *);
typedef void (*destructor)(PyObject *); typedef void (*destructor)(PyObject *);
#ifndef Py_LIMITED_API
/* We can't provide a full compile-time check that limited-API
users won't implement tp_print. However, not defining printfunc
and making tp_print of a different function pointer type
should at least cause a warning in most cases. */
typedef int (*printfunc)(PyObject *, FILE *, int);
#endif
typedef PyObject *(*getattrfunc)(PyObject *, char *); typedef PyObject *(*getattrfunc)(PyObject *, char *);
typedef PyObject *(*getattrofunc)(PyObject *, PyObject *); typedef PyObject *(*getattrofunc)(PyObject *, PyObject *);
typedef int (*setattrfunc)(PyObject *, char *, PyObject *); typedef int (*setattrfunc)(PyObject *, char *, PyObject *);
@ -349,100 +175,8 @@ typedef int (*initproc)(PyObject *, PyObject *, PyObject *);
typedef PyObject *(*newfunc)(struct _typeobject *, PyObject *, PyObject *); typedef PyObject *(*newfunc)(struct _typeobject *, PyObject *, PyObject *);
typedef PyObject *(*allocfunc)(struct _typeobject *, Py_ssize_t); typedef PyObject *(*allocfunc)(struct _typeobject *, Py_ssize_t);
#ifdef Py_LIMITED_API /* In Py_LIMITED_API, PyTypeObject is an opaque structure. */
typedef struct _typeobject PyTypeObject; /* opaque */ typedef struct _typeobject PyTypeObject;
#else
typedef struct _typeobject {
PyObject_VAR_HEAD
const char *tp_name; /* For printing, in format "<module>.<name>" */
Py_ssize_t tp_basicsize, tp_itemsize; /* For allocation */
/* Methods to implement standard operations */
destructor tp_dealloc;
printfunc tp_print;
getattrfunc tp_getattr;
setattrfunc tp_setattr;
PyAsyncMethods *tp_as_async; /* formerly known as tp_compare (Python 2)
or tp_reserved (Python 3) */
reprfunc tp_repr;
/* Method suites for standard classes */
PyNumberMethods *tp_as_number;
PySequenceMethods *tp_as_sequence;
PyMappingMethods *tp_as_mapping;
/* More standard operations (here for binary compatibility) */
hashfunc tp_hash;
ternaryfunc tp_call;
reprfunc tp_str;
getattrofunc tp_getattro;
setattrofunc tp_setattro;
/* Functions to access object as input/output buffer */
PyBufferProcs *tp_as_buffer;
/* Flags to define presence of optional/expanded features */
unsigned long tp_flags;
const char *tp_doc; /* Documentation string */
/* Assigned meaning in release 2.0 */
/* call function for all accessible objects */
traverseproc tp_traverse;
/* delete references to contained objects */
inquiry tp_clear;
/* Assigned meaning in release 2.1 */
/* rich comparisons */
richcmpfunc tp_richcompare;
/* weak reference enabler */
Py_ssize_t tp_weaklistoffset;
/* Iterators */
getiterfunc tp_iter;
iternextfunc tp_iternext;
/* Attribute descriptor and subclassing stuff */
struct PyMethodDef *tp_methods;
struct PyMemberDef *tp_members;
struct PyGetSetDef *tp_getset;
struct _typeobject *tp_base;
PyObject *tp_dict;
descrgetfunc tp_descr_get;
descrsetfunc tp_descr_set;
Py_ssize_t tp_dictoffset;
initproc tp_init;
allocfunc tp_alloc;
newfunc tp_new;
freefunc tp_free; /* Low-level free-memory routine */
inquiry tp_is_gc; /* For PyObject_IS_GC */
PyObject *tp_bases;
PyObject *tp_mro; /* method resolution order */
PyObject *tp_cache;
PyObject *tp_subclasses;
PyObject *tp_weaklist;
destructor tp_del;
/* Type attribute cache version tag. Added in version 2.6 */
unsigned int tp_version_tag;
destructor tp_finalize;
#ifdef COUNT_ALLOCS
/* these must be last and never explicitly initialized */
Py_ssize_t tp_allocs;
Py_ssize_t tp_frees;
Py_ssize_t tp_maxalloc;
struct _typeobject *tp_prev;
struct _typeobject *tp_next;
#endif
} PyTypeObject;
#endif
typedef struct{ typedef struct{
int slot; /* slot id, see below */ int slot; /* slot id, see below */
@ -465,31 +199,6 @@ PyAPI_FUNC(PyObject*) PyType_FromSpecWithBases(PyType_Spec*, PyObject*);
PyAPI_FUNC(void*) PyType_GetSlot(PyTypeObject*, int); PyAPI_FUNC(void*) PyType_GetSlot(PyTypeObject*, int);
#endif #endif
#ifndef Py_LIMITED_API
/* The *real* layout of a type object when allocated on the heap */
typedef struct _heaptypeobject {
/* Note: there's a dependency on the order of these members
in slotptr() in typeobject.c . */
PyTypeObject ht_type;
PyAsyncMethods as_async;
PyNumberMethods as_number;
PyMappingMethods as_mapping;
PySequenceMethods as_sequence; /* as_sequence comes after as_mapping,
so that the mapping wins when both
the mapping and the sequence define
a given operator (e.g. __getitem__).
see add_operators() in typeobject.c . */
PyBufferProcs as_buffer;
PyObject *ht_name, *ht_slots, *ht_qualname;
struct _dictkeysobject *ht_cached_keys;
/* here are optional user slots, followed by the members. */
} PyHeapTypeObject;
/* access macro to the members which are floating "behind" the object */
#define PyHeapType_GET_MEMBERS(etype) \
((PyMemberDef *)(((char *)etype) + Py_TYPE(etype)->tp_basicsize))
#endif
/* Generic type check */ /* Generic type check */
PyAPI_FUNC(int) PyType_IsSubtype(PyTypeObject *, PyTypeObject *); PyAPI_FUNC(int) PyType_IsSubtype(PyTypeObject *, PyTypeObject *);
#define PyObject_TypeCheck(ob, tp) \ #define PyObject_TypeCheck(ob, tp) \
@ -509,29 +218,10 @@ PyAPI_FUNC(int) PyType_Ready(PyTypeObject *);
PyAPI_FUNC(PyObject *) PyType_GenericAlloc(PyTypeObject *, Py_ssize_t); PyAPI_FUNC(PyObject *) PyType_GenericAlloc(PyTypeObject *, Py_ssize_t);
PyAPI_FUNC(PyObject *) PyType_GenericNew(PyTypeObject *, PyAPI_FUNC(PyObject *) PyType_GenericNew(PyTypeObject *,
PyObject *, PyObject *); PyObject *, PyObject *);
#ifndef Py_LIMITED_API
PyAPI_FUNC(const char *) _PyType_Name(PyTypeObject *);
PyAPI_FUNC(PyObject *) _PyType_Lookup(PyTypeObject *, PyObject *);
PyAPI_FUNC(PyObject *) _PyType_LookupId(PyTypeObject *, _Py_Identifier *);
PyAPI_FUNC(PyObject *) _PyObject_LookupSpecial(PyObject *, _Py_Identifier *);
PyAPI_FUNC(PyTypeObject *) _PyType_CalculateMetaclass(PyTypeObject *, PyObject *);
#endif
PyAPI_FUNC(unsigned int) PyType_ClearCache(void); PyAPI_FUNC(unsigned int) PyType_ClearCache(void);
PyAPI_FUNC(void) PyType_Modified(PyTypeObject *); PyAPI_FUNC(void) PyType_Modified(PyTypeObject *);
#ifndef Py_LIMITED_API
PyAPI_FUNC(PyObject *) _PyType_GetDocFromInternalDoc(const char *, const char *);
PyAPI_FUNC(PyObject *) _PyType_GetTextSignatureFromInternalDoc(const char *, const char *);
#endif
/* Generic operations on objects */ /* Generic operations on objects */
#ifndef Py_LIMITED_API
struct _Py_Identifier;
PyAPI_FUNC(int) PyObject_Print(PyObject *, FILE *, int);
PyAPI_FUNC(void) _Py_BreakPoint(void);
PyAPI_FUNC(void) _PyObject_Dump(PyObject *);
PyAPI_FUNC(int) _PyObject_IsFreed(PyObject *);
#endif
PyAPI_FUNC(PyObject *) PyObject_Repr(PyObject *); PyAPI_FUNC(PyObject *) PyObject_Repr(PyObject *);
PyAPI_FUNC(PyObject *) PyObject_Str(PyObject *); PyAPI_FUNC(PyObject *) PyObject_Str(PyObject *);
PyAPI_FUNC(PyObject *) PyObject_ASCII(PyObject *); PyAPI_FUNC(PyObject *) PyObject_ASCII(PyObject *);
@ -544,28 +234,7 @@ PyAPI_FUNC(int) PyObject_HasAttrString(PyObject *, const char *);
PyAPI_FUNC(PyObject *) PyObject_GetAttr(PyObject *, PyObject *); PyAPI_FUNC(PyObject *) PyObject_GetAttr(PyObject *, PyObject *);
PyAPI_FUNC(int) PyObject_SetAttr(PyObject *, PyObject *, PyObject *); PyAPI_FUNC(int) PyObject_SetAttr(PyObject *, PyObject *, PyObject *);
PyAPI_FUNC(int) PyObject_HasAttr(PyObject *, PyObject *); PyAPI_FUNC(int) PyObject_HasAttr(PyObject *, PyObject *);
#ifndef Py_LIMITED_API
PyAPI_FUNC(int) _PyObject_IsAbstract(PyObject *);
PyAPI_FUNC(PyObject *) _PyObject_GetAttrId(PyObject *, struct _Py_Identifier *);
PyAPI_FUNC(int) _PyObject_SetAttrId(PyObject *, struct _Py_Identifier *, PyObject *);
PyAPI_FUNC(int) _PyObject_HasAttrId(PyObject *, struct _Py_Identifier *);
/* Replacements of PyObject_GetAttr() and _PyObject_GetAttrId() which
don't raise AttributeError.
Return 1 and set *result != NULL if an attribute is found.
Return 0 and set *result == NULL if an attribute is not found;
an AttributeError is silenced.
Return -1 and set *result == NULL if an error other than AttributeError
is raised.
*/
PyAPI_FUNC(int) _PyObject_LookupAttr(PyObject *, PyObject *, PyObject **);
PyAPI_FUNC(int) _PyObject_LookupAttrId(PyObject *, struct _Py_Identifier *, PyObject **);
PyAPI_FUNC(PyObject **) _PyObject_GetDictPtr(PyObject *);
#endif
PyAPI_FUNC(PyObject *) PyObject_SelfIter(PyObject *); PyAPI_FUNC(PyObject *) PyObject_SelfIter(PyObject *);
#ifndef Py_LIMITED_API
PyAPI_FUNC(PyObject *) _PyObject_NextNotImplemented(PyObject *);
#endif
PyAPI_FUNC(PyObject *) PyObject_GenericGetAttr(PyObject *, PyObject *); PyAPI_FUNC(PyObject *) PyObject_GenericGetAttr(PyObject *, PyObject *);
PyAPI_FUNC(int) PyObject_GenericSetAttr(PyObject *, PyAPI_FUNC(int) PyObject_GenericSetAttr(PyObject *,
PyObject *, PyObject *); PyObject *, PyObject *);
@ -577,28 +246,7 @@ PyAPI_FUNC(Py_hash_t) PyObject_HashNotImplemented(PyObject *);
PyAPI_FUNC(int) PyObject_IsTrue(PyObject *); PyAPI_FUNC(int) PyObject_IsTrue(PyObject *);
PyAPI_FUNC(int) PyObject_Not(PyObject *); PyAPI_FUNC(int) PyObject_Not(PyObject *);
PyAPI_FUNC(int) PyCallable_Check(PyObject *); PyAPI_FUNC(int) PyCallable_Check(PyObject *);
PyAPI_FUNC(void) PyObject_ClearWeakRefs(PyObject *); PyAPI_FUNC(void) PyObject_ClearWeakRefs(PyObject *);
#ifndef Py_LIMITED_API
PyAPI_FUNC(void) PyObject_CallFinalizer(PyObject *);
PyAPI_FUNC(int) PyObject_CallFinalizerFromDealloc(PyObject *);
#endif
#ifndef Py_LIMITED_API
/* Same as PyObject_Generic{Get,Set}Attr, but passing the attributes
dict as the last parameter. */
PyAPI_FUNC(PyObject *)
_PyObject_GenericGetAttrWithDict(PyObject *, PyObject *, PyObject *, int);
PyAPI_FUNC(int)
_PyObject_GenericSetAttrWithDict(PyObject *, PyObject *,
PyObject *, PyObject *);
#endif /* !Py_LIMITED_API */
/* Helper to look up a builtin object */
#ifndef Py_LIMITED_API
PyAPI_FUNC(PyObject *)
_PyObject_GetBuiltin(const char *name);
#endif
/* PyObject_Dir(obj) acts like Python builtins.dir(obj), returning a /* PyObject_Dir(obj) acts like Python builtins.dir(obj), returning a
list of strings. PyObject_Dir(NULL) is like builtins.dir(), list of strings. PyObject_Dir(NULL) is like builtins.dir(),
@ -689,9 +337,7 @@ given type object has a specified feature.
#define Py_TPFLAGS_HAVE_FINALIZE (1UL << 0) #define Py_TPFLAGS_HAVE_FINALIZE (1UL << 0)
#ifdef Py_LIMITED_API #ifdef Py_LIMITED_API
#define PyType_HasFeature(t,f) ((PyType_GetFlags(t) & (f)) != 0) # define PyType_HasFeature(t,f) ((PyType_GetFlags(t) & (f)) != 0)
#else
#define PyType_HasFeature(t,f) (((t)->tp_flags & (f)) != 0)
#endif #endif
#define PyType_FastSubclass(t,f) PyType_HasFeature(t,f) #define PyType_FastSubclass(t,f) PyType_HasFeature(t,f)
@ -775,7 +421,6 @@ PyAPI_FUNC(void) _Py_ForgetReference(PyObject *);
PyAPI_FUNC(void) _Py_PrintReferences(FILE *); PyAPI_FUNC(void) _Py_PrintReferences(FILE *);
PyAPI_FUNC(void) _Py_PrintReferenceAddresses(FILE *); PyAPI_FUNC(void) _Py_PrintReferenceAddresses(FILE *);
PyAPI_FUNC(void) _Py_AddToAllObjects(PyObject *, int force); PyAPI_FUNC(void) _Py_AddToAllObjects(PyObject *, int force);
#else #else
/* Without Py_TRACE_REFS, there's little enough to do that we expand code /* Without Py_TRACE_REFS, there's little enough to do that we expand code
inline. */ inline. */
@ -798,22 +443,6 @@ static inline void _Py_ForgetReference(PyObject *op)
PyAPI_FUNC(void) _Py_Dealloc(PyObject *); PyAPI_FUNC(void) _Py_Dealloc(PyObject *);
#ifndef Py_LIMITED_API
static inline void _Py_Dealloc_inline(PyObject *op)
{
destructor dealloc = Py_TYPE(op)->tp_dealloc;
#ifdef Py_TRACE_REFS
_Py_ForgetReference(op);
#else
_Py_INC_TPFREES(op);
#endif
(*dealloc)(op);
}
# define _Py_Dealloc(op) _Py_Dealloc_inline(op)
#endif /* !defined(Py_LIMITED_API) */
static inline void _Py_INCREF(PyObject *op) static inline void _Py_INCREF(PyObject *op)
{ {
_Py_INC_REFTOTAL; _Py_INC_REFTOTAL;
@ -903,42 +532,6 @@ static inline void _Py_XDECREF(PyObject *op)
#define Py_XDECREF(op) _Py_XDECREF(_PyObject_CAST(op)) #define Py_XDECREF(op) _Py_XDECREF(_PyObject_CAST(op))
#ifndef Py_LIMITED_API
/* Safely decref `op` and set `op` to `op2`.
*
* As in case of Py_CLEAR "the obvious" code can be deadly:
*
* Py_DECREF(op);
* op = op2;
*
* The safe way is:
*
* Py_SETREF(op, op2);
*
* That arranges to set `op` to `op2` _before_ decref'ing, so that any code
* triggered as a side-effect of `op` getting torn down no longer believes
* `op` points to a valid object.
*
* Py_XSETREF is a variant of Py_SETREF that uses Py_XDECREF instead of
* Py_DECREF.
*/
#define Py_SETREF(op, op2) \
do { \
PyObject *_py_tmp = _PyObject_CAST(op); \
(op) = (op2); \
Py_DECREF(_py_tmp); \
} while (0)
#define Py_XSETREF(op, op2) \
do { \
PyObject *_py_tmp = _PyObject_CAST(op); \
(op) = (op2); \
Py_XDECREF(_py_tmp); \
} while (0)
#endif /* ifndef Py_LIMITED_API */
/* /*
These are provided as conveniences to Python runtime embedders, so that These are provided as conveniences to Python runtime embedders, so that
they can have object code that is not dependent on Python compilation flags. they can have object code that is not dependent on Python compilation flags.
@ -946,11 +539,6 @@ they can have object code that is not dependent on Python compilation flags.
PyAPI_FUNC(void) Py_IncRef(PyObject *); PyAPI_FUNC(void) Py_IncRef(PyObject *);
PyAPI_FUNC(void) Py_DecRef(PyObject *); PyAPI_FUNC(void) Py_DecRef(PyObject *);
#ifndef Py_LIMITED_API
PyAPI_DATA(PyTypeObject) _PyNone_Type;
PyAPI_DATA(PyTypeObject) _PyNotImplemented_Type;
#endif /* !Py_LIMITED_API */
/* /*
_Py_NoneStruct is an object of undefined type which can be used in contexts _Py_NoneStruct is an object of undefined type which can be used in contexts
where NULL (nil) is not suitable (since NULL often means 'error'). where NULL (nil) is not suitable (since NULL often means 'error').
@ -1001,13 +589,6 @@ PyAPI_DATA(PyObject) _Py_NotImplementedStruct; /* Don't use this directly */
} \ } \
} while (0) } while (0)
#ifndef Py_LIMITED_API
/* Maps Py_LT to Py_GT, ..., Py_GE to Py_LE.
* Defined in object.c.
*/
PyAPI_DATA(int) _Py_SwappedOp[];
#endif /* !Py_LIMITED_API */
/* /*
More conventions More conventions
@ -1103,13 +684,6 @@ chain of N deallocations is broken into (N-1)/(PyTrash_UNWIND_LEVEL-1) pieces,
with the call stack never exceeding a depth of PyTrash_UNWIND_LEVEL. with the call stack never exceeding a depth of PyTrash_UNWIND_LEVEL.
*/ */
#ifndef Py_LIMITED_API
/* This is the old private API, invoked by the macros before 3.2.4.
Kept for binary compatibility of extensions using the stable ABI. */
PyAPI_FUNC(void) _PyTrash_deposit_object(PyObject*);
PyAPI_FUNC(void) _PyTrash_destroy_chain(void);
#endif /* !Py_LIMITED_API */
/* The new thread-safe private API, invoked by the macros below. */ /* The new thread-safe private API, invoked by the macros below. */
PyAPI_FUNC(void) _PyTrash_thread_deposit_object(PyObject*); PyAPI_FUNC(void) _PyTrash_thread_deposit_object(PyObject*);
PyAPI_FUNC(void) _PyTrash_thread_destroy_chain(void); PyAPI_FUNC(void) _PyTrash_thread_destroy_chain(void);
@ -1131,66 +705,13 @@ PyAPI_FUNC(void) _PyTrash_thread_destroy_chain(void);
_PyTrash_thread_deposit_object(_PyObject_CAST(op)); \ _PyTrash_thread_deposit_object(_PyObject_CAST(op)); \
} while (0); } while (0);
#ifndef Py_LIMITED_API
PyAPI_FUNC(void)
_PyDebugAllocatorStats(FILE *out, const char *block_name, int num_blocks,
size_t sizeof_block);
PyAPI_FUNC(void)
_PyObject_DebugTypeStats(FILE *out);
#endif /* ifndef Py_LIMITED_API */
#ifndef Py_LIMITED_API #ifndef Py_LIMITED_API
/* Define a pair of assertion macros: # define Py_CPYTHON_OBJECT_H
_PyObject_ASSERT_FROM(), _PyObject_ASSERT_WITH_MSG() and _PyObject_ASSERT(). # include "cpython/object.h"
# undef Py_CPYTHON_OBJECT_H
These work like the regular C assert(), in that they will abort the
process with a message on stderr if the given condition fails to hold,
but compile away to nothing if NDEBUG is defined.
However, before aborting, Python will also try to call _PyObject_Dump() on
the given object. This may be of use when investigating bugs in which a
particular object is corrupt (e.g. buggy a tp_visit method in an extension
module breaking the garbage collector), to help locate the broken objects.
The WITH_MSG variant allows you to supply an additional message that Python
will attempt to print to stderr, after the object dump. */
#ifdef NDEBUG
/* No debugging: compile away the assertions: */
# define _PyObject_ASSERT_FROM(obj, expr, msg, filename, lineno, func) \
((void)0)
#else
/* With debugging: generate checks: */
# define _PyObject_ASSERT_FROM(obj, expr, msg, filename, lineno, func) \
((expr) \
? (void)(0) \
: _PyObject_AssertFailed((obj), Py_STRINGIFY(expr), \
(msg), (filename), (lineno), (func)))
#endif #endif
#define _PyObject_ASSERT_WITH_MSG(obj, expr, msg) \
_PyObject_ASSERT_FROM(obj, expr, msg, __FILE__, __LINE__, __func__)
#define _PyObject_ASSERT(obj, expr) \
_PyObject_ASSERT_WITH_MSG(obj, expr, NULL)
#define _PyObject_ASSERT_FAILED_MSG(obj, msg) \
_PyObject_AssertFailed((obj), NULL, (msg), __FILE__, __LINE__, __func__)
/* Declare and define _PyObject_AssertFailed() even when NDEBUG is defined,
to avoid causing compiler/linker errors when building extensions without
NDEBUG against a Python built with NDEBUG defined.
msg, expr and function can be NULL. */
PyAPI_FUNC(void) _PyObject_AssertFailed(
PyObject *obj,
const char *expr,
const char *msg,
const char *file,
int line,
const char *function);
#endif /* ifndef Py_LIMITED_API */
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif #endif