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https://github.com/python/cpython
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bpo-45459: Add Py_buffer to limited API (GH-29991)
- [x] ``Py_buffer`` struct - [x] ``PyBuffer_*()`` API functions - [x] ``PyBUF_*`` constants - [x] ``Py_bf_getbuffer`` and ``Py_bf_releasebuffer`` type slots - [x] ``PyMemoryView_FromBuffer()`` API - [x] tests for limited API - [x] ``make regen-limited-abi`` - [x] documentation update - [ ] export ``PyPickleBuffer*()`` API ???
This commit is contained in:
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@ -499,6 +499,13 @@ Buffer-related functions
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This function fails if *len* != *src->len*.
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This function fails if *len* != *src->len*.
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.. c:function:: int PyObject_CopyData(Py_buffer *dest, Py_buffer *src)
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Copy data from *src* to *dest* buffer. Can convert between C-style and
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or Fortran-style buffers.
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``0`` is returned on success, ``-1`` on error.
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.. c:function:: void PyBuffer_FillContiguousStrides(int ndims, Py_ssize_t *shape, Py_ssize_t *strides, int itemsize, char order)
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.. c:function:: void PyBuffer_FillContiguousStrides(int ndims, Py_ssize_t *shape, Py_ssize_t *strides, int itemsize, char order)
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Fill the *strides* array with byte-strides of a :term:`contiguous` (C-style if
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Fill the *strides* array with byte-strides of a :term:`contiguous` (C-style if
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@ -272,12 +272,6 @@ The following functions and structs are used to create
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* :c:member:`~PyTypeObject.tp_vectorcall_offset`
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* :c:member:`~PyTypeObject.tp_vectorcall_offset`
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(see :ref:`PyMemberDef <pymemberdef-offsets>`)
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(see :ref:`PyMemberDef <pymemberdef-offsets>`)
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The following fields cannot be set using :c:type:`PyType_Spec` and
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:c:type:`PyType_Slot` under the limited API:
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* :c:member:`~PyBufferProcs.bf_getbuffer`
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* :c:member:`~PyBufferProcs.bf_releasebuffer`
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Setting :c:data:`Py_tp_bases` or :c:data:`Py_tp_base` may be
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Setting :c:data:`Py_tp_bases` or :c:data:`Py_tp_base` may be
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problematic on some platforms.
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problematic on some platforms.
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To avoid issues, use the *bases* argument of
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To avoid issues, use the *bases* argument of
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@ -287,6 +281,11 @@ The following functions and structs are used to create
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Slots in :c:type:`PyBufferProcs` in may be set in the unlimited API.
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Slots in :c:type:`PyBufferProcs` in may be set in the unlimited API.
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.. versionchanged:: 3.11
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:c:member:`~PyBufferProcs.bf_getbuffer` and
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:c:member:`~PyBufferProcs.bf_releasebuffer` are now available
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under limited API.
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.. c:member:: void *PyType_Slot.pfunc
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.. c:member:: void *PyType_Slot.pfunc
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The desired value of the slot. In most cases, this is a pointer
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The desired value of the slot. In most cases, this is a pointer
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@ -10,6 +10,14 @@ function,PyArg_ValidateKeywordArguments,3.2,
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var,PyBaseObject_Type,3.2,
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var,PyBaseObject_Type,3.2,
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function,PyBool_FromLong,3.2,
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function,PyBool_FromLong,3.2,
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var,PyBool_Type,3.2,
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var,PyBool_Type,3.2,
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function,PyBuffer_FillContiguousStrides,3.11,
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function,PyBuffer_FillInfo,3.11,
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function,PyBuffer_FromContiguous,3.11,
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function,PyBuffer_GetPointer,3.11,
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function,PyBuffer_IsContiguous,3.11,
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function,PyBuffer_Release,3.11,
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function,PyBuffer_SizeFromFormat,3.11,
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function,PyBuffer_ToContiguous,3.11,
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var,PyByteArrayIter_Type,3.2,
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var,PyByteArrayIter_Type,3.2,
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function,PyByteArray_AsString,3.2,
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function,PyByteArray_AsString,3.2,
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function,PyByteArray_Concat,3.2,
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function,PyByteArray_Concat,3.2,
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@ -375,6 +383,7 @@ function,PyMem_Malloc,3.2,
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function,PyMem_Realloc,3.2,
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function,PyMem_Realloc,3.2,
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type,PyMemberDef,3.2,
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type,PyMemberDef,3.2,
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var,PyMemberDescr_Type,3.2,
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var,PyMemberDescr_Type,3.2,
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function,PyMemoryView_FromBuffer,3.11,
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function,PyMemoryView_FromMemory,3.7,
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function,PyMemoryView_FromMemory,3.7,
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function,PyMemoryView_FromObject,3.2,
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function,PyMemoryView_FromObject,3.2,
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function,PyMemoryView_GetContiguous,3.2,
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function,PyMemoryView_GetContiguous,3.2,
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@ -476,8 +485,10 @@ function,PyObject_CallMethodObjArgs,3.2,
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function,PyObject_CallNoArgs,3.10,
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function,PyObject_CallNoArgs,3.10,
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function,PyObject_CallObject,3.2,
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function,PyObject_CallObject,3.2,
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function,PyObject_Calloc,3.7,
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function,PyObject_Calloc,3.7,
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function,PyObject_CheckBuffer,3.11,
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function,PyObject_CheckReadBuffer,3.2,
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function,PyObject_CheckReadBuffer,3.2,
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function,PyObject_ClearWeakRefs,3.2,
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function,PyObject_ClearWeakRefs,3.2,
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function,PyObject_CopyData,3.11,
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function,PyObject_DelItem,3.2,
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function,PyObject_DelItem,3.2,
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function,PyObject_DelItemString,3.2,
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function,PyObject_DelItemString,3.2,
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function,PyObject_Dir,3.2,
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function,PyObject_Dir,3.2,
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@ -495,6 +506,7 @@ function,PyObject_GenericSetDict,3.7,
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function,PyObject_GetAIter,3.10,
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function,PyObject_GetAIter,3.10,
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function,PyObject_GetAttr,3.2,
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function,PyObject_GetAttr,3.2,
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function,PyObject_GetAttrString,3.2,
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function,PyObject_GetAttrString,3.2,
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function,PyObject_GetBuffer,3.11,
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function,PyObject_GetItem,3.2,
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function,PyObject_GetItem,3.2,
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function,PyObject_GetIter,3.2,
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function,PyObject_GetIter,3.2,
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function,PyObject_HasAttr,3.2,
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function,PyObject_HasAttr,3.2,
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@ -832,6 +844,7 @@ var,Py_UTF8Mode,3.8,
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function,Py_VaBuildValue,3.2,
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function,Py_VaBuildValue,3.2,
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var,Py_Version,3.11,
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var,Py_Version,3.11,
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function,Py_XNewRef,3.10,
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function,Py_XNewRef,3.10,
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type,Py_buffer,3.11,
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type,Py_intptr_t,3.2,
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type,Py_intptr_t,3.2,
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type,Py_ssize_t,3.2,
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type,Py_ssize_t,3.2,
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type,Py_uintptr_t,3.2,
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type,Py_uintptr_t,3.2,
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@ -657,6 +657,26 @@ New Features
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:c:macro:`PY_VERSION_HEX`.
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:c:macro:`PY_VERSION_HEX`.
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(Contributed by Gabriele N. Tornetta in :issue:`43931`.)
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(Contributed by Gabriele N. Tornetta in :issue:`43931`.)
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* :c:type:`Py_buffer` and APIs are now part of the limited API and the stable
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ABI:
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* :c:func:`PyObject_CheckBuffer`
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* :c:func:`PyObject_GetBuffer`
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* :c:func:`PyBuffer_GetPointer`
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* :c:func:`PyBuffer_SizeFromFormat`
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* :c:func:`PyBuffer_ToContiguous`
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* :c:func:`PyBuffer_FromContiguous`
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* :c:func:`PyBuffer_CopyData`
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* :c:func:`PyBuffer_IsContiguous`
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* :c:func:`PyBuffer_FillContiguousStrides`
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* :c:func:`PyBuffer_FillInfo`
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* :c:func:`PyBuffer_Release`
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* :c:func:`PyMemoryView_FromBuffer`
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* :c:member:`~PyBufferProcs.bf_getbuffer` and
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:c:member:`~PyBufferProcs.bf_releasebuffer` type slots
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(Contributed by Christian Heimes in :issue:`45459`.)
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Porting to Python 3.11
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Porting to Python 3.11
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----------------------
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----------------------
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@ -50,6 +50,7 @@
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#include "longobject.h"
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#include "longobject.h"
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#include "cpython/longintrepr.h"
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#include "cpython/longintrepr.h"
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#include "boolobject.h"
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#include "boolobject.h"
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#include "buffer.h"
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#include "floatobject.h"
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#include "floatobject.h"
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#include "complexobject.h"
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#include "complexobject.h"
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#include "rangeobject.h"
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#include "rangeobject.h"
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142
Include/buffer.h
Normal file
142
Include/buffer.h
Normal file
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@ -0,0 +1,142 @@
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/* Public Py_buffer API */
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#ifndef Py_BUFFER_H
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#define Py_BUFFER_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030b0000
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/* === New Buffer API ============================================
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* Limited API and stable ABI since Python 3.11
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*
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* Py_buffer struct layout and size is now part of the stable abi3. The
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* struct layout and size must not be changed in any way, as it would
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* break the ABI.
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*
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*/
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typedef struct {
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void *buf;
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PyObject *obj; /* owned reference */
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Py_ssize_t len;
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Py_ssize_t itemsize; /* This is Py_ssize_t so it can be
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pointed to by strides in simple case.*/
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int readonly;
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int ndim;
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char *format;
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Py_ssize_t *shape;
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Py_ssize_t *strides;
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Py_ssize_t *suboffsets;
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void *internal;
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} Py_buffer;
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/* Return 1 if the getbuffer function is available, otherwise return 0. */
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PyAPI_FUNC(int) PyObject_CheckBuffer(PyObject *obj);
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/* This is a C-API version of the getbuffer function call. It checks
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to make sure object has the required function pointer and issues the
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call.
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Returns -1 and raises an error on failure and returns 0 on success. */
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PyAPI_FUNC(int) PyObject_GetBuffer(PyObject *obj, Py_buffer *view,
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int flags);
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/* Get the memory area pointed to by the indices for the buffer given.
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Note that view->ndim is the assumed size of indices. */
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PyAPI_FUNC(void *) PyBuffer_GetPointer(const Py_buffer *view, const Py_ssize_t *indices);
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/* Return the implied itemsize of the data-format area from a
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struct-style description. */
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PyAPI_FUNC(Py_ssize_t) PyBuffer_SizeFromFormat(const char *format);
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/* Implementation in memoryobject.c */
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PyAPI_FUNC(int) PyBuffer_ToContiguous(void *buf, const Py_buffer *view,
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Py_ssize_t len, char order);
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PyAPI_FUNC(int) PyBuffer_FromContiguous(const Py_buffer *view, const void *buf,
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Py_ssize_t len, char order);
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/* Copy len bytes of data from the contiguous chunk of memory
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pointed to by buf into the buffer exported by obj. Return
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0 on success and return -1 and raise a PyBuffer_Error on
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error (i.e. the object does not have a buffer interface or
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it is not working).
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If fort is 'F', then if the object is multi-dimensional,
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then the data will be copied into the array in
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Fortran-style (first dimension varies the fastest). If
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fort is 'C', then the data will be copied into the array
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in C-style (last dimension varies the fastest). If fort
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is 'A', then it does not matter and the copy will be made
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in whatever way is more efficient. */
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PyAPI_FUNC(int) PyObject_CopyData(PyObject *dest, PyObject *src);
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/* Copy the data from the src buffer to the buffer of destination. */
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PyAPI_FUNC(int) PyBuffer_IsContiguous(const Py_buffer *view, char fort);
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/*Fill the strides array with byte-strides of a contiguous
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(Fortran-style if fort is 'F' or C-style otherwise)
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array of the given shape with the given number of bytes
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per element. */
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PyAPI_FUNC(void) PyBuffer_FillContiguousStrides(int ndims,
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Py_ssize_t *shape,
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Py_ssize_t *strides,
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int itemsize,
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char fort);
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/* Fills in a buffer-info structure correctly for an exporter
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that can only share a contiguous chunk of memory of
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"unsigned bytes" of the given length.
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Returns 0 on success and -1 (with raising an error) on error. */
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PyAPI_FUNC(int) PyBuffer_FillInfo(Py_buffer *view, PyObject *o, void *buf,
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Py_ssize_t len, int readonly,
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int flags);
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/* Releases a Py_buffer obtained from getbuffer ParseTuple's "s*". */
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PyAPI_FUNC(void) PyBuffer_Release(Py_buffer *view);
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/* Maximum number of dimensions */
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#define PyBUF_MAX_NDIM 64
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/* Flags for getting buffers */
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#define PyBUF_SIMPLE 0
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#define PyBUF_WRITABLE 0x0001
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#ifndef Py_LIMITED_API
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/* we used to include an E, backwards compatible alias */
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#define PyBUF_WRITEABLE PyBUF_WRITABLE
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#endif
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#define PyBUF_FORMAT 0x0004
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#define PyBUF_ND 0x0008
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#define PyBUF_STRIDES (0x0010 | PyBUF_ND)
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#define PyBUF_C_CONTIGUOUS (0x0020 | PyBUF_STRIDES)
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#define PyBUF_F_CONTIGUOUS (0x0040 | PyBUF_STRIDES)
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#define PyBUF_ANY_CONTIGUOUS (0x0080 | PyBUF_STRIDES)
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#define PyBUF_INDIRECT (0x0100 | PyBUF_STRIDES)
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#define PyBUF_CONTIG (PyBUF_ND | PyBUF_WRITABLE)
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#define PyBUF_CONTIG_RO (PyBUF_ND)
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#define PyBUF_STRIDED (PyBUF_STRIDES | PyBUF_WRITABLE)
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#define PyBUF_STRIDED_RO (PyBUF_STRIDES)
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#define PyBUF_RECORDS (PyBUF_STRIDES | PyBUF_WRITABLE | PyBUF_FORMAT)
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#define PyBUF_RECORDS_RO (PyBUF_STRIDES | PyBUF_FORMAT)
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#define PyBUF_FULL (PyBUF_INDIRECT | PyBUF_WRITABLE | PyBUF_FORMAT)
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#define PyBUF_FULL_RO (PyBUF_INDIRECT | PyBUF_FORMAT)
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#define PyBUF_READ 0x100
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#define PyBUF_WRITE 0x200
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#endif /* !Py_LIMITED_API || Py_LIMITED_API >= 3.11 */
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#ifdef __cplusplus
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}
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#endif
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#endif /* Py_BUFFER_H */
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@ -168,74 +168,6 @@ PyAPI_FUNC(int) _PyObject_HasLen(PyObject *o);
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value. If one of the calls fails, this function returns -1. */
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value. If one of the calls fails, this function returns -1. */
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PyAPI_FUNC(Py_ssize_t) PyObject_LengthHint(PyObject *o, Py_ssize_t);
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PyAPI_FUNC(Py_ssize_t) PyObject_LengthHint(PyObject *o, Py_ssize_t);
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/* === New Buffer API ============================================ */
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/* Return 1 if the getbuffer function is available, otherwise return 0. */
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PyAPI_FUNC(int) PyObject_CheckBuffer(PyObject *obj);
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/* This is a C-API version of the getbuffer function call. It checks
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to make sure object has the required function pointer and issues the
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call.
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Returns -1 and raises an error on failure and returns 0 on success. */
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PyAPI_FUNC(int) PyObject_GetBuffer(PyObject *obj, Py_buffer *view,
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int flags);
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/* Get the memory area pointed to by the indices for the buffer given.
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Note that view->ndim is the assumed size of indices. */
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PyAPI_FUNC(void *) PyBuffer_GetPointer(const Py_buffer *view, const Py_ssize_t *indices);
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/* Return the implied itemsize of the data-format area from a
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struct-style description. */
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PyAPI_FUNC(Py_ssize_t) PyBuffer_SizeFromFormat(const char *format);
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/* Implementation in memoryobject.c */
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PyAPI_FUNC(int) PyBuffer_ToContiguous(void *buf, const Py_buffer *view,
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Py_ssize_t len, char order);
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PyAPI_FUNC(int) PyBuffer_FromContiguous(const Py_buffer *view, const void *buf,
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Py_ssize_t len, char order);
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/* Copy len bytes of data from the contiguous chunk of memory
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||||||
pointed to by buf into the buffer exported by obj. Return
|
|
||||||
0 on success and return -1 and raise a PyBuffer_Error on
|
|
||||||
error (i.e. the object does not have a buffer interface or
|
|
||||||
it is not working).
|
|
||||||
|
|
||||||
If fort is 'F', then if the object is multi-dimensional,
|
|
||||||
then the data will be copied into the array in
|
|
||||||
Fortran-style (first dimension varies the fastest). If
|
|
||||||
fort is 'C', then the data will be copied into the array
|
|
||||||
in C-style (last dimension varies the fastest). If fort
|
|
||||||
is 'A', then it does not matter and the copy will be made
|
|
||||||
in whatever way is more efficient. */
|
|
||||||
PyAPI_FUNC(int) PyObject_CopyData(PyObject *dest, PyObject *src);
|
|
||||||
|
|
||||||
/* Copy the data from the src buffer to the buffer of destination. */
|
|
||||||
PyAPI_FUNC(int) PyBuffer_IsContiguous(const Py_buffer *view, char fort);
|
|
||||||
|
|
||||||
/*Fill the strides array with byte-strides of a contiguous
|
|
||||||
(Fortran-style if fort is 'F' or C-style otherwise)
|
|
||||||
array of the given shape with the given number of bytes
|
|
||||||
per element. */
|
|
||||||
PyAPI_FUNC(void) PyBuffer_FillContiguousStrides(int ndims,
|
|
||||||
Py_ssize_t *shape,
|
|
||||||
Py_ssize_t *strides,
|
|
||||||
int itemsize,
|
|
||||||
char fort);
|
|
||||||
|
|
||||||
/* Fills in a buffer-info structure correctly for an exporter
|
|
||||||
that can only share a contiguous chunk of memory of
|
|
||||||
"unsigned bytes" of the given length.
|
|
||||||
|
|
||||||
Returns 0 on success and -1 (with raising an error) on error. */
|
|
||||||
PyAPI_FUNC(int) PyBuffer_FillInfo(Py_buffer *view, PyObject *o, void *buf,
|
|
||||||
Py_ssize_t len, int readonly,
|
|
||||||
int flags);
|
|
||||||
|
|
||||||
/* Releases a Py_buffer obtained from getbuffer ParseTuple's "s*". */
|
|
||||||
PyAPI_FUNC(void) PyBuffer_Release(Py_buffer *view);
|
|
||||||
|
|
||||||
/* === Sequence protocol ================================================ */
|
/* === Sequence protocol ================================================ */
|
||||||
|
|
||||||
/* Assume tp_as_sequence and sq_item exist and that 'i' does not
|
/* Assume tp_as_sequence and sq_item exist and that 'i' does not
|
||||||
|
|
|
@ -2,6 +2,8 @@
|
||||||
# error "this header file must not be included directly"
|
# error "this header file must not be included directly"
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
#include "buffer.h" // for Py_buffer, included after PyObject has been defined
|
||||||
|
|
||||||
PyAPI_FUNC(void) _Py_NewReference(PyObject *op);
|
PyAPI_FUNC(void) _Py_NewReference(PyObject *op);
|
||||||
|
|
||||||
#ifdef Py_TRACE_REFS
|
#ifdef Py_TRACE_REFS
|
||||||
|
@ -45,61 +47,12 @@ typedef struct _Py_Identifier {
|
||||||
#define _Py_static_string(varname, value) static _Py_Identifier varname = _Py_static_string_init(value)
|
#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)
|
#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 int (*getbufferproc)(PyObject *, Py_buffer *, int);
|
||||||
typedef void (*releasebufferproc)(PyObject *, Py_buffer *);
|
typedef void (*releasebufferproc)(PyObject *, Py_buffer *);
|
||||||
|
|
||||||
typedef PyObject *(*vectorcallfunc)(PyObject *callable, PyObject *const *args,
|
typedef PyObject *(*vectorcallfunc)(PyObject *callable, PyObject *const *args,
|
||||||
size_t nargsf, PyObject *kwnames);
|
size_t nargsf, PyObject *kwnames);
|
||||||
|
|
||||||
/* 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 {
|
typedef struct {
|
||||||
/* Number implementations must check *both*
|
/* Number implementations must check *both*
|
||||||
|
|
|
@ -25,7 +25,7 @@ PyAPI_FUNC(PyObject *) PyMemoryView_FromObject(PyObject *base);
|
||||||
PyAPI_FUNC(PyObject *) PyMemoryView_FromMemory(char *mem, Py_ssize_t size,
|
PyAPI_FUNC(PyObject *) PyMemoryView_FromMemory(char *mem, Py_ssize_t size,
|
||||||
int flags);
|
int flags);
|
||||||
#endif
|
#endif
|
||||||
#ifndef Py_LIMITED_API
|
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030b0000
|
||||||
PyAPI_FUNC(PyObject *) PyMemoryView_FromBuffer(const Py_buffer *info);
|
PyAPI_FUNC(PyObject *) PyMemoryView_FromBuffer(const Py_buffer *info);
|
||||||
#endif
|
#endif
|
||||||
PyAPI_FUNC(PyObject *) PyMemoryView_GetContiguous(PyObject *base,
|
PyAPI_FUNC(PyObject *) PyMemoryView_GetContiguous(PyObject *base,
|
||||||
|
|
|
@ -1,12 +1,6 @@
|
||||||
/* Do not renumber the file; these numbers are part of the stable ABI. */
|
/* Do not renumber the file; these numbers are part of the stable ABI. */
|
||||||
#if defined(Py_LIMITED_API)
|
|
||||||
/* Disabled, see #10181 */
|
|
||||||
#undef Py_bf_getbuffer
|
|
||||||
#undef Py_bf_releasebuffer
|
|
||||||
#else
|
|
||||||
#define Py_bf_getbuffer 1
|
#define Py_bf_getbuffer 1
|
||||||
#define Py_bf_releasebuffer 2
|
#define Py_bf_releasebuffer 2
|
||||||
#endif
|
|
||||||
#define Py_mp_ass_subscript 3
|
#define Py_mp_ass_subscript 3
|
||||||
#define Py_mp_length 4
|
#define Py_mp_length 4
|
||||||
#define Py_mp_subscript 5
|
#define Py_mp_subscript 5
|
||||||
|
|
|
@ -28,6 +28,14 @@ SYMBOL_NAMES = (
|
||||||
"PyBaseObject_Type",
|
"PyBaseObject_Type",
|
||||||
"PyBool_FromLong",
|
"PyBool_FromLong",
|
||||||
"PyBool_Type",
|
"PyBool_Type",
|
||||||
|
"PyBuffer_FillContiguousStrides",
|
||||||
|
"PyBuffer_FillInfo",
|
||||||
|
"PyBuffer_FromContiguous",
|
||||||
|
"PyBuffer_GetPointer",
|
||||||
|
"PyBuffer_IsContiguous",
|
||||||
|
"PyBuffer_Release",
|
||||||
|
"PyBuffer_SizeFromFormat",
|
||||||
|
"PyBuffer_ToContiguous",
|
||||||
"PyByteArrayIter_Type",
|
"PyByteArrayIter_Type",
|
||||||
"PyByteArray_AsString",
|
"PyByteArray_AsString",
|
||||||
"PyByteArray_Concat",
|
"PyByteArray_Concat",
|
||||||
|
@ -381,6 +389,7 @@ SYMBOL_NAMES = (
|
||||||
"PyMemberDescr_Type",
|
"PyMemberDescr_Type",
|
||||||
"PyMember_GetOne",
|
"PyMember_GetOne",
|
||||||
"PyMember_SetOne",
|
"PyMember_SetOne",
|
||||||
|
"PyMemoryView_FromBuffer",
|
||||||
"PyMemoryView_FromMemory",
|
"PyMemoryView_FromMemory",
|
||||||
"PyMemoryView_FromObject",
|
"PyMemoryView_FromObject",
|
||||||
"PyMemoryView_GetContiguous",
|
"PyMemoryView_GetContiguous",
|
||||||
|
@ -470,8 +479,10 @@ SYMBOL_NAMES = (
|
||||||
"PyObject_CallNoArgs",
|
"PyObject_CallNoArgs",
|
||||||
"PyObject_CallObject",
|
"PyObject_CallObject",
|
||||||
"PyObject_Calloc",
|
"PyObject_Calloc",
|
||||||
|
"PyObject_CheckBuffer",
|
||||||
"PyObject_CheckReadBuffer",
|
"PyObject_CheckReadBuffer",
|
||||||
"PyObject_ClearWeakRefs",
|
"PyObject_ClearWeakRefs",
|
||||||
|
"PyObject_CopyData",
|
||||||
"PyObject_DelItem",
|
"PyObject_DelItem",
|
||||||
"PyObject_DelItemString",
|
"PyObject_DelItemString",
|
||||||
"PyObject_Dir",
|
"PyObject_Dir",
|
||||||
|
@ -489,6 +500,7 @@ SYMBOL_NAMES = (
|
||||||
"PyObject_GetAIter",
|
"PyObject_GetAIter",
|
||||||
"PyObject_GetAttr",
|
"PyObject_GetAttr",
|
||||||
"PyObject_GetAttrString",
|
"PyObject_GetAttrString",
|
||||||
|
"PyObject_GetBuffer",
|
||||||
"PyObject_GetItem",
|
"PyObject_GetItem",
|
||||||
"PyObject_GetIter",
|
"PyObject_GetIter",
|
||||||
"PyObject_HasAttr",
|
"PyObject_HasAttr",
|
||||||
|
|
|
@ -58,6 +58,17 @@ def test_error(self):
|
||||||
with self.assertRaises(self.module.Error):
|
with self.assertRaises(self.module.Error):
|
||||||
raise self.module.Error
|
raise self.module.Error
|
||||||
|
|
||||||
|
def test_buffer(self):
|
||||||
|
xxo = self.module.Xxo()
|
||||||
|
self.assertEqual(xxo.x_exports, 0)
|
||||||
|
b1 = memoryview(xxo)
|
||||||
|
self.assertEqual(xxo.x_exports, 1)
|
||||||
|
b2 = memoryview(xxo)
|
||||||
|
self.assertEqual(xxo.x_exports, 2)
|
||||||
|
b1[0] = 1
|
||||||
|
self.assertEqual(b1[0], 1)
|
||||||
|
self.assertEqual(b2[0], 1)
|
||||||
|
|
||||||
|
|
||||||
class TestXXLimited35(CommonTests, unittest.TestCase):
|
class TestXXLimited35(CommonTests, unittest.TestCase):
|
||||||
module = xxlimited_35
|
module = xxlimited_35
|
||||||
|
|
|
@ -1439,6 +1439,7 @@ PYTHON_HEADERS= \
|
||||||
$(srcdir)/Include/abstract.h \
|
$(srcdir)/Include/abstract.h \
|
||||||
$(srcdir)/Include/bltinmodule.h \
|
$(srcdir)/Include/bltinmodule.h \
|
||||||
$(srcdir)/Include/boolobject.h \
|
$(srcdir)/Include/boolobject.h \
|
||||||
|
$(srcdir)/Include/buffer.h \
|
||||||
$(srcdir)/Include/bytearrayobject.h \
|
$(srcdir)/Include/bytearrayobject.h \
|
||||||
$(srcdir)/Include/bytesobject.h \
|
$(srcdir)/Include/bytesobject.h \
|
||||||
$(srcdir)/Include/ceval.h \
|
$(srcdir)/Include/ceval.h \
|
||||||
|
|
|
@ -0,0 +1,2 @@
|
||||||
|
:c:type:`Py_buffer` and various ``Py_buffer`` related functions are now
|
||||||
|
part of the limited API and stable ABI.
|
|
@ -2191,6 +2191,34 @@ function PyType_GetQualName
|
||||||
data PyStructSequence_UnnamedField
|
data PyStructSequence_UnnamedField
|
||||||
added 3.11
|
added 3.11
|
||||||
|
|
||||||
|
# Add stable Py_buffer API in Python 3.11 (https://bugs.python.org/issue45459)
|
||||||
|
struct Py_buffer
|
||||||
|
added 3.11
|
||||||
|
function PyObject_CheckBuffer
|
||||||
|
added 3.11
|
||||||
|
function PyObject_GetBuffer
|
||||||
|
added 3.11
|
||||||
|
function PyBuffer_GetPointer
|
||||||
|
added 3.11
|
||||||
|
function PyBuffer_SizeFromFormat
|
||||||
|
added 3.11
|
||||||
|
function PyBuffer_ToContiguous
|
||||||
|
added 3.11
|
||||||
|
function PyBuffer_FromContiguous
|
||||||
|
added 3.11
|
||||||
|
function PyObject_CopyData
|
||||||
|
added 3.11
|
||||||
|
function PyBuffer_IsContiguous
|
||||||
|
added 3.11
|
||||||
|
function PyBuffer_FillContiguousStrides
|
||||||
|
added 3.11
|
||||||
|
function PyBuffer_FillInfo
|
||||||
|
added 3.11
|
||||||
|
function PyBuffer_Release
|
||||||
|
added 3.11
|
||||||
|
function PyMemoryView_FromBuffer
|
||||||
|
added 3.11
|
||||||
|
|
||||||
# (Detailed comments aren't really needed for further entries: from here on
|
# (Detailed comments aren't really needed for further entries: from here on
|
||||||
# we can use version control logs.)
|
# we can use version control logs.)
|
||||||
|
|
||||||
|
|
|
@ -19,6 +19,7 @@
|
||||||
def __init__(self):
|
def __init__(self):
|
||||||
# In the C class, "_x_attr" is not accessible from Python code
|
# In the C class, "_x_attr" is not accessible from Python code
|
||||||
self._x_attr = {}
|
self._x_attr = {}
|
||||||
|
self._x_exports = 0
|
||||||
|
|
||||||
def __getattr__(self, name):
|
def __getattr__(self, name):
|
||||||
return self._x_attr[name]
|
return self._x_attr[name]
|
||||||
|
@ -29,6 +30,13 @@
|
||||||
def __delattr__(self, name):
|
def __delattr__(self, name):
|
||||||
del self._x_attr[name]
|
del self._x_attr[name]
|
||||||
|
|
||||||
|
@property
|
||||||
|
def x_exports(self):
|
||||||
|
"""Return the number of times an internal buffer is exported."""
|
||||||
|
# Each Xxo instance has a 10-byte buffer that can be
|
||||||
|
# accessed via the buffer interface (e.g. `memoryview`).
|
||||||
|
return self._x_exports
|
||||||
|
|
||||||
def demo(o, /):
|
def demo(o, /):
|
||||||
if isinstance(o, str):
|
if isinstance(o, str):
|
||||||
return o
|
return o
|
||||||
|
@ -57,6 +65,9 @@
|
||||||
#define Py_LIMITED_API 0x030b0000
|
#define Py_LIMITED_API 0x030b0000
|
||||||
|
|
||||||
#include "Python.h"
|
#include "Python.h"
|
||||||
|
#include <string.h>
|
||||||
|
|
||||||
|
#define BUFSIZE 10
|
||||||
|
|
||||||
// Module state
|
// Module state
|
||||||
typedef struct {
|
typedef struct {
|
||||||
|
@ -70,7 +81,9 @@ typedef struct {
|
||||||
// Instance state
|
// Instance state
|
||||||
typedef struct {
|
typedef struct {
|
||||||
PyObject_HEAD
|
PyObject_HEAD
|
||||||
PyObject *x_attr; /* Attributes dictionary */
|
PyObject *x_attr; /* Attributes dictionary */
|
||||||
|
char x_buffer[BUFSIZE]; /* buffer for Py_buffer */
|
||||||
|
Py_ssize_t x_exports; /* how many buffer are exported */
|
||||||
} XxoObject;
|
} XxoObject;
|
||||||
|
|
||||||
// XXX: no good way to do this yet
|
// XXX: no good way to do this yet
|
||||||
|
@ -89,6 +102,8 @@ newXxoObject(PyObject *module)
|
||||||
return NULL;
|
return NULL;
|
||||||
}
|
}
|
||||||
self->x_attr = NULL;
|
self->x_attr = NULL;
|
||||||
|
memset(self->x_buffer, 0, BUFSIZE);
|
||||||
|
self->x_exports = 0;
|
||||||
return self;
|
return self;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -212,11 +227,43 @@ static PyMethodDef Xxo_methods[] = {
|
||||||
{NULL, NULL} /* sentinel */
|
{NULL, NULL} /* sentinel */
|
||||||
};
|
};
|
||||||
|
|
||||||
|
/* Xxo buffer interface */
|
||||||
|
|
||||||
|
static int
|
||||||
|
Xxo_getbuffer(XxoObject *self, Py_buffer *view, int flags)
|
||||||
|
{
|
||||||
|
int res = PyBuffer_FillInfo(view, (PyObject*)self,
|
||||||
|
(void *)self->x_buffer, BUFSIZE,
|
||||||
|
0, flags);
|
||||||
|
if (res == 0) {
|
||||||
|
self->x_exports++;
|
||||||
|
}
|
||||||
|
return res;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
Xxo_releasebuffer(XxoObject *self, Py_buffer *view)
|
||||||
|
{
|
||||||
|
self->x_exports--;
|
||||||
|
}
|
||||||
|
|
||||||
|
static PyObject *
|
||||||
|
Xxo_get_x_exports(XxoObject *self, void *c)
|
||||||
|
{
|
||||||
|
return PyLong_FromSsize_t(self->x_exports);
|
||||||
|
}
|
||||||
|
|
||||||
/* Xxo type definition */
|
/* Xxo type definition */
|
||||||
|
|
||||||
PyDoc_STRVAR(Xxo_doc,
|
PyDoc_STRVAR(Xxo_doc,
|
||||||
"A class that explicitly stores attributes in an internal dict");
|
"A class that explicitly stores attributes in an internal dict");
|
||||||
|
|
||||||
|
static PyGetSetDef Xxo_getsetlist[] = {
|
||||||
|
{"x_exports", (getter) Xxo_get_x_exports, NULL, NULL},
|
||||||
|
{NULL},
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
static PyType_Slot Xxo_Type_slots[] = {
|
static PyType_Slot Xxo_Type_slots[] = {
|
||||||
{Py_tp_doc, (char *)Xxo_doc},
|
{Py_tp_doc, (char *)Xxo_doc},
|
||||||
{Py_tp_traverse, Xxo_traverse},
|
{Py_tp_traverse, Xxo_traverse},
|
||||||
|
@ -226,6 +273,9 @@ static PyType_Slot Xxo_Type_slots[] = {
|
||||||
{Py_tp_getattro, Xxo_getattro},
|
{Py_tp_getattro, Xxo_getattro},
|
||||||
{Py_tp_setattro, Xxo_setattro},
|
{Py_tp_setattro, Xxo_setattro},
|
||||||
{Py_tp_methods, Xxo_methods},
|
{Py_tp_methods, Xxo_methods},
|
||||||
|
{Py_bf_getbuffer, Xxo_getbuffer},
|
||||||
|
{Py_bf_releasebuffer, Xxo_releasebuffer},
|
||||||
|
{Py_tp_getset, Xxo_getsetlist},
|
||||||
{0, 0}, /* sentinel */
|
{0, 0}, /* sentinel */
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
|
@ -94,6 +94,14 @@ EXPORT_FUNC(PyArg_ValidateKeywordArguments)
|
||||||
EXPORT_FUNC(PyArg_VaParse)
|
EXPORT_FUNC(PyArg_VaParse)
|
||||||
EXPORT_FUNC(PyArg_VaParseTupleAndKeywords)
|
EXPORT_FUNC(PyArg_VaParseTupleAndKeywords)
|
||||||
EXPORT_FUNC(PyBool_FromLong)
|
EXPORT_FUNC(PyBool_FromLong)
|
||||||
|
EXPORT_FUNC(PyBuffer_FillContiguousStrides)
|
||||||
|
EXPORT_FUNC(PyBuffer_FillInfo)
|
||||||
|
EXPORT_FUNC(PyBuffer_FromContiguous)
|
||||||
|
EXPORT_FUNC(PyBuffer_GetPointer)
|
||||||
|
EXPORT_FUNC(PyBuffer_IsContiguous)
|
||||||
|
EXPORT_FUNC(PyBuffer_Release)
|
||||||
|
EXPORT_FUNC(PyBuffer_SizeFromFormat)
|
||||||
|
EXPORT_FUNC(PyBuffer_ToContiguous)
|
||||||
EXPORT_FUNC(PyByteArray_AsString)
|
EXPORT_FUNC(PyByteArray_AsString)
|
||||||
EXPORT_FUNC(PyByteArray_Concat)
|
EXPORT_FUNC(PyByteArray_Concat)
|
||||||
EXPORT_FUNC(PyByteArray_FromObject)
|
EXPORT_FUNC(PyByteArray_FromObject)
|
||||||
|
@ -352,6 +360,7 @@ EXPORT_FUNC(PyMem_Malloc)
|
||||||
EXPORT_FUNC(PyMem_Realloc)
|
EXPORT_FUNC(PyMem_Realloc)
|
||||||
EXPORT_FUNC(PyMember_GetOne)
|
EXPORT_FUNC(PyMember_GetOne)
|
||||||
EXPORT_FUNC(PyMember_SetOne)
|
EXPORT_FUNC(PyMember_SetOne)
|
||||||
|
EXPORT_FUNC(PyMemoryView_FromBuffer)
|
||||||
EXPORT_FUNC(PyMemoryView_FromMemory)
|
EXPORT_FUNC(PyMemoryView_FromMemory)
|
||||||
EXPORT_FUNC(PyMemoryView_FromObject)
|
EXPORT_FUNC(PyMemoryView_FromObject)
|
||||||
EXPORT_FUNC(PyMemoryView_GetContiguous)
|
EXPORT_FUNC(PyMemoryView_GetContiguous)
|
||||||
|
@ -426,8 +435,10 @@ EXPORT_FUNC(PyObject_CallMethodObjArgs)
|
||||||
EXPORT_FUNC(PyObject_CallNoArgs)
|
EXPORT_FUNC(PyObject_CallNoArgs)
|
||||||
EXPORT_FUNC(PyObject_CallObject)
|
EXPORT_FUNC(PyObject_CallObject)
|
||||||
EXPORT_FUNC(PyObject_Calloc)
|
EXPORT_FUNC(PyObject_Calloc)
|
||||||
|
EXPORT_FUNC(PyObject_CheckBuffer)
|
||||||
EXPORT_FUNC(PyObject_CheckReadBuffer)
|
EXPORT_FUNC(PyObject_CheckReadBuffer)
|
||||||
EXPORT_FUNC(PyObject_ClearWeakRefs)
|
EXPORT_FUNC(PyObject_ClearWeakRefs)
|
||||||
|
EXPORT_FUNC(PyObject_CopyData)
|
||||||
EXPORT_FUNC(PyObject_DelItem)
|
EXPORT_FUNC(PyObject_DelItem)
|
||||||
EXPORT_FUNC(PyObject_DelItemString)
|
EXPORT_FUNC(PyObject_DelItemString)
|
||||||
EXPORT_FUNC(PyObject_Dir)
|
EXPORT_FUNC(PyObject_Dir)
|
||||||
|
@ -445,6 +456,7 @@ EXPORT_FUNC(PyObject_GenericSetDict)
|
||||||
EXPORT_FUNC(PyObject_GetAIter)
|
EXPORT_FUNC(PyObject_GetAIter)
|
||||||
EXPORT_FUNC(PyObject_GetAttr)
|
EXPORT_FUNC(PyObject_GetAttr)
|
||||||
EXPORT_FUNC(PyObject_GetAttrString)
|
EXPORT_FUNC(PyObject_GetAttrString)
|
||||||
|
EXPORT_FUNC(PyObject_GetBuffer)
|
||||||
EXPORT_FUNC(PyObject_GetItem)
|
EXPORT_FUNC(PyObject_GetItem)
|
||||||
EXPORT_FUNC(PyObject_GetIter)
|
EXPORT_FUNC(PyObject_GetIter)
|
||||||
EXPORT_FUNC(PyObject_HasAttr)
|
EXPORT_FUNC(PyObject_HasAttr)
|
||||||
|
|
Loading…
Reference in a new issue