LowLevelViews.cxx File Reference

#include "cpyrt.h"
#include "Converters.h"
#include "CustomPyTypes.h"
#include "LowLevelViews.h"
#include "PyStrings.h"
#include <assert.h>
#include <limits.h>
#include <map>
#include <string.h>

Include dependency graph for LowLevelViews.cxx:

Namespaces
namespace	cppjit
namespace	cppjit::cpyrt

Macros
#define	ADJUST_PTR(ptr, suboffsets, dim)    (HAVE_PTR(suboffsets, dim) ? *((char**)ptr) + suboffsets[dim] : ptr)
#define	CPPJIT_IMPL_VIEW_CREATOR(type)
#define	CPPJIT_RET_W_CREATOR(type, fname)
#define	CPYRT_LL_FLAG_GETSET(name, flag, doc)
#define	HAVE_PTR(suboffsets, dim)   (suboffsets && suboffsets[dim] >= 0)
#define	HAVE_SUBOFFSETS_IN_LAST_DIM(view)    (view->suboffsets && view->suboffsets[dest->ndim - 1] >= 0)

Functions
static void	copy_base (const Py_ssize_t *shape, Py_ssize_t itemsize, char *dptr, const Py_ssize_t *dstrides, const Py_ssize_t *dsuboffsets, char *sptr, const Py_ssize_t *sstrides, const Py_ssize_t *ssuboffsets, char *mem)
static int	copy_single (Py_buffer *dest, Py_buffer *src)
template<typename T >
static cpyrt::LowLevelView *	CreateLowLevelViewT (T **address, cpyrt::cdims_t shape, const char *format=nullptr, const char *name=nullptr)
template<typename T >
static cpyrt::LowLevelView *	CreateLowLevelViewT (T *address, cpyrt::cdims_t shape, const char *format=nullptr, const char *name=nullptr, Py_ssize_t itemsize=-1)
static bool	equiv_shape (const Py_buffer *dest, const Py_buffer *src)
static bool	equiv_structure (const Py_buffer *dest, const Py_buffer *src)
static Py_ssize_t	fake_max (size_t elemsize)
static int	init_slice (Py_buffer *base, PyObject *_key, int dim)
static Py_ssize_t	is_multiindex (PyObject *key)
static bool	is_multislice (PyObject *key)
static int	last_dim_is_contiguous (const Py_buffer *dest, const Py_buffer *src)
static PyObject *	ll_array (cpyrt::LowLevelView *self, PyObject *args, PyObject *kwds)
static PyObject *	ll_as_string (cpyrt::LowLevelView *self)
static int	ll_ass_sub (cpyrt::LowLevelView *self, PyObject *key, PyObject *value)
static void	ll_dealloc (cpyrt::LowLevelView *pyobj)
static int	ll_getbuf (cpyrt::LowLevelView *self, Py_buffer *view, int flags)
static PyObject *	ll_getcpparray (cpyrt::LowLevelView *pyobj)
static PyObject *	ll_getownership (cpyrt::LowLevelView *pyobj)
static PyObject *	ll_item (cpyrt::LowLevelView *self, Py_ssize_t index)
static PyObject *	ll_item_multi (cpyrt::LowLevelView *self, PyObject *tup)
static PyObject *	ll_iter (PyObject *self)
static Py_ssize_t	ll_length (cpyrt::LowLevelView *self)
static cpyrt::LowLevelView *	ll_new (PyTypeObject *subtype, PyObject *, PyObject *)
static PyObject *	ll_reshape (cpyrt::LowLevelView *self, PyObject *shape)
static PyObject *	ll_reshape_error (cpyrt::LowLevelView *self, PyObject *shape, const char *why)
static int	ll_setcpparray (cpyrt::LowLevelView *pyobj, PyObject *value, void *)
static int	ll_setownership (cpyrt::LowLevelView *pyobj, PyObject *value, void *)
static int	ll_setshape (cpyrt::LowLevelView *self, PyObject *value, void *)
static PyObject *	ll_shape (cpyrt::LowLevelView *self)
static PyObject *	ll_subscript (cpyrt::LowLevelView *self, PyObject *key)
static PyObject *	ll_typecode (cpyrt::LowLevelView *self, void *)
static char *	lookup_dimension (Py_buffer &view, char *ptr, int dim, Py_ssize_t index)
static void *	ptr_from_index (cpyrt::LowLevelView *llview, Py_ssize_t index)
static void *	ptr_from_tuple (cpyrt::LowLevelView *llview, PyObject *tup)
static void	set_strides (Py_buffer &view, size_t itemsize, bool isfix)

Variables
static PyBufferProcs	ll_as_buffer
static PyMappingMethods	ll_as_mapping
static PySequenceMethods	ll_as_sequence
static PyGetSetDef	ll_getset []
static PyMethodDef	ll_methods []
PyTypeObject	cppjit::cpyrt::LowLevelView_Type

Macro Definition Documentation

ADJUST_PTR

#define ADJUST_PTR	(		ptr,
			suboffsets,
			dim )    (HAVE_PTR(suboffsets, dim) ? *((char**)ptr) + suboffsets[dim] : ptr)

Definition at line 126 of file LowLevelViews.cxx.

CPPJIT_IMPL_VIEW_CREATOR

#define CPPJIT_IMPL_VIEW_CREATOR

(

type

)

Value:

  PyObject* cpyrt::CreateLowLevelView(type* address, cdims_t shape) {          \
    LowLevelView* ll = CreateLowLevelViewT<type>(address, shape);              \
    CPPJIT_RET_W_CREATOR(type*, CreateLowLevelView);                           \
  }                                                                            \
  PyObject* cpyrt::CreateLowLevelView(type** address, cdims_t shape) {         \
    LowLevelView* ll = CreateLowLevelViewT<type>(address, shape);              \
    CPPJIT_RET_W_CREATOR(type**, CreateLowLevelView);                          \
  }

Definition at line 1163 of file LowLevelViews.cxx.

CPPJIT_RET_W_CREATOR

#define CPPJIT_RET_W_CREATOR	(		type,
			fname )

Value:

  PyObject* (*c)(type, cdims_t) = &fname;                                      \
  ll->fCreator = (LowLevelView::Creator_t)c;                                   \
  return (PyObject*)ll

Definition at line 1158 of file LowLevelViews.cxx.

CPYRT_LL_FLAG_GETSET

#define CPYRT_LL_FLAG_GETSET	(		name,
			flag,
			doc )

Value:

  static PyObject* ll_get##name(cpyrt::LowLevelView* pyobj) {                  \
    return PyBool_FromLong((long)((intptr_t)pyobj->fBufInfo.internal & flag)); \
  }                                                                            \
                                                                               \
  static int ll_set##name(cpyrt::LowLevelView* pyobj, PyObject* value,         \
                          void*) {                                             \
    long settrue = PyLong_AsLong(value);                                       \
    if (settrue == -1 && PyErr_Occurred()) {                                   \
      PyErr_SetString(PyExc_ValueError,                                        \
                      #doc " should be either True or False");                 \
      return -1;                                                               \
    }                                                                          \
                                                                               \
    if ((bool)settrue)                                                         \
      (intptr_t&)pyobj->fBufInfo.internal |= flag;                             \
    else                                                                       \
      (intptr_t&)pyobj->fBufInfo.internal &= ~flag;                            \
                                                                               \
    return 0;                                                                  \
  }

Definition at line 85 of file LowLevelViews.cxx.

HAVE_PTR

#define HAVE_PTR	(		suboffsets,
			dim )   (suboffsets && suboffsets[dim] >= 0)

Definition at line 124 of file LowLevelViews.cxx.

HAVE_SUBOFFSETS_IN_LAST_DIM

#define HAVE_SUBOFFSETS_IN_LAST_DIM

(

view

)

(view->suboffsets && view->suboffsets[dest->ndim - 1] >= 0)

Definition at line 131 of file LowLevelViews.cxx.

Function Documentation

copy_base()

static void copy_base ( const Py_ssize_t * shape, Py_ssize_t itemsize, char * dptr, const Py_ssize_t * dstrides, const Py_ssize_t * dsuboffsets, char * sptr, const Py_ssize_t * sstrides, const Py_ssize_t * ssuboffsets, char * mem )

static

Definition at line 177 of file LowLevelViews.cxx.

copy_single()

static int copy_single ( Py_buffer * dest, Py_buffer * src )

static

Definition at line 207 of file LowLevelViews.cxx.

CreateLowLevelViewT() [1/2]

template<typename T >

static cpyrt::LowLevelView * CreateLowLevelViewT ( T ** address, cpyrt::cdims_t shape, const char * format = nullptr, const char * name = nullptr )

inlinestatic

Definition at line 1148 of file LowLevelViews.cxx.

CreateLowLevelViewT() [2/2]

template<typename T >

static cpyrt::LowLevelView * CreateLowLevelViewT ( T * address, cpyrt::cdims_t shape, const char * format = nullptr, const char * name = nullptr, Py_ssize_t itemsize = -1 )

inlinestatic

Definition at line 1087 of file LowLevelViews.cxx.

equiv_shape()

static bool equiv_shape ( const Py_buffer * dest, const Py_buffer * src )

inlinestatic

Definition at line 145 of file LowLevelViews.cxx.

equiv_structure()

static bool equiv_structure ( const Py_buffer * dest, const Py_buffer * src )

static

Definition at line 163 of file LowLevelViews.cxx.

fake_max()

static Py_ssize_t fake_max ( size_t elemsize )

inlinestatic

Definition at line 40 of file LowLevelViews.cxx.

init_slice()

static int init_slice ( Py_buffer * base, PyObject * _key, int dim )

inlinestatic

Definition at line 322 of file LowLevelViews.cxx.

is_multiindex()

static Py_ssize_t is_multiindex ( PyObject * key )

static

Definition at line 366 of file LowLevelViews.cxx.

is_multislice()

static bool is_multislice ( PyObject * key )

static

Definition at line 349 of file LowLevelViews.cxx.

last_dim_is_contiguous()

static int last_dim_is_contiguous ( const Py_buffer * dest, const Py_buffer * src )

inlinestatic

Definition at line 135 of file LowLevelViews.cxx.

ll_array()

static PyObject * ll_array ( cpyrt::LowLevelView * self, PyObject * args, PyObject * kwds )

static

Definition at line 818 of file LowLevelViews.cxx.

ll_as_string()

static PyObject * ll_as_string ( cpyrt::LowLevelView * self )

static

Definition at line 882 of file LowLevelViews.cxx.

ll_ass_sub()

static int ll_ass_sub ( cpyrt::LowLevelView * self, PyObject * key, PyObject * value )

static

Definition at line 498 of file LowLevelViews.cxx.

ll_dealloc()

static void ll_dealloc ( cpyrt::LowLevelView * pyobj )

static

Definition at line 63 of file LowLevelViews.cxx.

ll_getbuf()

static int ll_getbuf ( cpyrt::LowLevelView * self, Py_buffer * view, int flags )

static

Definition at line 597 of file LowLevelViews.cxx.

ll_getcpparray()

static PyObject * ll_getcpparray ( cpyrt::LowLevelView * pyobj )

static

Definition at line 109 of file LowLevelViews.cxx.

ll_getownership()

static PyObject * ll_getownership ( cpyrt::LowLevelView * pyobj )

static

Definition at line 108 of file LowLevelViews.cxx.

ll_item()

static PyObject * ll_item ( cpyrt::LowLevelView * self, Py_ssize_t index )

static

Definition at line 383 of file LowLevelViews.cxx.

ll_item_multi()

static PyObject * ll_item_multi ( cpyrt::LowLevelView * self, PyObject * tup )

static

Definition at line 409 of file LowLevelViews.cxx.

ll_iter()

static PyObject * ll_iter ( PyObject * self )

static

Definition at line 642 of file LowLevelViews.cxx.

ll_length()

static Py_ssize_t ll_length ( cpyrt::LowLevelView * self )

static

Definition at line 315 of file LowLevelViews.cxx.

ll_new()

static cpyrt::LowLevelView * ll_new ( PyTypeObject * subtype, PyObject * , PyObject *  )

static

Definition at line 45 of file LowLevelViews.cxx.

ll_reshape()

static PyObject * ll_reshape ( cpyrt::LowLevelView * self, PyObject * shape )

static

Definition at line 722 of file LowLevelViews.cxx.

ll_reshape_error()

static PyObject * ll_reshape_error ( cpyrt::LowLevelView * self, PyObject * shape, const char * why )

static

Definition at line 709 of file LowLevelViews.cxx.

ll_setcpparray()

static int ll_setcpparray ( cpyrt::LowLevelView * pyobj, PyObject * value, void *  )

static

Definition at line 109 of file LowLevelViews.cxx.

ll_setownership()

static int ll_setownership ( cpyrt::LowLevelView * pyobj, PyObject * value, void *  )

static

Definition at line 108 of file LowLevelViews.cxx.

ll_setshape()

static int ll_setshape ( cpyrt::LowLevelView * self, PyObject * value, void *  )

static

Definition at line 804 of file LowLevelViews.cxx.

ll_shape()

static PyObject * ll_shape ( cpyrt::LowLevelView * self )

static

Definition at line 690 of file LowLevelViews.cxx.

ll_subscript()

static PyObject * ll_subscript ( cpyrt::LowLevelView * self, PyObject * key )

static

Definition at line 432 of file LowLevelViews.cxx.

ll_typecode()

static PyObject * ll_typecode ( cpyrt::LowLevelView * self, void *  )

static

Definition at line 113 of file LowLevelViews.cxx.

lookup_dimension()

static char * lookup_dimension ( Py_buffer & view, char * ptr, int dim, Py_ssize_t index )

static

Definition at line 235 of file LowLevelViews.cxx.

ptr_from_index()

static void * ptr_from_index ( cpyrt::LowLevelView * llview, Py_ssize_t index )

inlinestatic

Definition at line 277 of file LowLevelViews.cxx.

ptr_from_tuple()

static void * ptr_from_tuple ( cpyrt::LowLevelView * llview, PyObject * tup )

static

Definition at line 285 of file LowLevelViews.cxx.

set_strides()

static void set_strides ( Py_buffer & view, size_t itemsize, bool isfix )

inlinestatic

Definition at line 24 of file LowLevelViews.cxx.

Variable Documentation

ll_as_buffer

PyBufferProcs ll_as_buffer

static

Initial value:

= {
    (getbufferproc)ll_getbuf, 
    0,                        
}

Definition at line 684 of file LowLevelViews.cxx.

ll_as_mapping

PyMappingMethods ll_as_mapping

static

Initial value:

= {
    (lenfunc)ll_length,        
    (binaryfunc)ll_subscript,  
    (objobjargproc)ll_ass_sub, 
}

Definition at line 663 of file LowLevelViews.cxx.

ll_as_sequence

PySequenceMethods ll_as_sequence

static

Initial value:

= {
    (lenfunc)ll_length,    
    0,                     
    0,                     
    (ssizeargfunc)ll_item, 
    0,                     
    0,                     
    0,                     
    0,                     
    0,                     
    0,                     
}

Definition at line 670 of file LowLevelViews.cxx.

ll_getset

PyGetSetDef ll_getset[]

static

Initial value:

= {
    {(char*)"__python_owns__", (getter)ll_getownership, (setter)ll_setownership,
     (char*)"If true, python manages the life time of this buffer", nullptr},
    {(char*)"__cpp_array__", (getter)ll_getcpparray, (setter)ll_setcpparray,
     (char*)"If true, this array was allocated with C++\'s new[]", nullptr},
    {(char*)"format", (getter)ll_typecode, nullptr, nullptr, nullptr},
    {(char*)"typecode", (getter)ll_typecode, nullptr, nullptr, nullptr},
    {(char*)"shape", (getter)ll_shape, (setter)ll_setshape, nullptr, nullptr},
    {(char*)nullptr, nullptr, nullptr, nullptr, nullptr}}

Definition at line 911 of file LowLevelViews.cxx.

ll_methods

PyMethodDef ll_methods[]

static

Initial value:

= {
    {(char*)"reshape", (PyCFunction)ll_reshape, METH_O,
     (char*)"change the shape (not layout) of the low level view"},
    {(char*)"as_string", (PyCFunction)ll_as_string, METH_NOARGS,
     (char*)"interpret memory as a null-terminated char string and return "
            "Python str"},
    {(char*)"__array__", (PyCFunction)ll_array, METH_VARARGS | METH_KEYWORDS,
     (char*)"return a numpy array from the low level view"},
    {(char*)nullptr, nullptr, 0, nullptr}}

Definition at line 900 of file LowLevelViews.cxx.