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51 lines
2.2 KiB
C
51 lines
2.2 KiB
C
#ifndef Ty_CPYTHON_MEMORYOBJECT_H
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# error "this header file must not be included directly"
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#endif
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/* The structs are declared here so that macros can work, but they shouldn't
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be considered public. Don't access their fields directly, use the macros
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and functions instead! */
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#define _Ty_MANAGED_BUFFER_RELEASED 0x001 /* access to exporter blocked */
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#define _Ty_MANAGED_BUFFER_FREE_FORMAT 0x002 /* free format */
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typedef struct {
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PyObject_HEAD
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int flags; /* state flags */
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Ty_ssize_t exports; /* number of direct memoryview exports */
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Ty_buffer master; /* snapshot buffer obtained from the original exporter */
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} _PyManagedBufferObject;
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/* memoryview state flags */
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#define _Ty_MEMORYVIEW_RELEASED 0x001 /* access to master buffer blocked */
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#define _Ty_MEMORYVIEW_C 0x002 /* C-contiguous layout */
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#define _Ty_MEMORYVIEW_FORTRAN 0x004 /* Fortran contiguous layout */
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#define _Ty_MEMORYVIEW_SCALAR 0x008 /* scalar: ndim = 0 */
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#define _Ty_MEMORYVIEW_PIL 0x010 /* PIL-style layout */
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#define _Ty_MEMORYVIEW_RESTRICTED 0x020 /* Disallow new references to the memoryview's buffer */
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typedef struct {
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PyObject_VAR_HEAD
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_PyManagedBufferObject *mbuf; /* managed buffer */
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Ty_hash_t hash; /* hash value for read-only views */
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int flags; /* state flags */
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Ty_ssize_t exports; /* number of buffer re-exports */
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Ty_buffer view; /* private copy of the exporter's view */
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TyObject *weakreflist;
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Ty_ssize_t ob_array[1]; /* shape, strides, suboffsets */
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} PyMemoryViewObject;
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#define _PyMemoryView_CAST(op) _Py_CAST(PyMemoryViewObject*, op)
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/* Get a pointer to the memoryview's private copy of the exporter's buffer. */
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static inline Ty_buffer* TyMemoryView_GET_BUFFER(TyObject *op) {
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return (&_PyMemoryView_CAST(op)->view);
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}
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#define TyMemoryView_GET_BUFFER(op) TyMemoryView_GET_BUFFER(_TyObject_CAST(op))
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/* Get a pointer to the exporting object (this may be NULL!). */
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static inline TyObject* TyMemoryView_GET_BASE(TyObject *op) {
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return _PyMemoryView_CAST(op)->view.obj;
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}
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#define TyMemoryView_GET_BASE(op) TyMemoryView_GET_BASE(_TyObject_CAST(op))
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