/usr/lib/python3/dist-packages/Cython/Utility/arrayarray.h is in cython3 0.25.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | /////////////// ArrayAPI.proto ///////////////
// arrayarray.h
//
// Artificial C-API for Python's <array.array> type,
// used by array.pxd
//
// last changes: 2009-05-15 rk
// 2012-05-02 andreasvc
// (see revision control)
//
#ifndef _ARRAYARRAY_H
#define _ARRAYARRAY_H
// These two forward declarations are explicitly handled in the type
// declaration code, as including them here is too late for cython-defined
// types to use them.
// struct arrayobject;
// typedef struct arrayobject arrayobject;
// All possible arraydescr values are defined in the vector "descriptors"
// below. That's defined later because the appropriate get and set
// functions aren't visible yet.
typedef struct arraydescr {
int typecode;
int itemsize;
PyObject * (*getitem)(struct arrayobject *, Py_ssize_t);
int (*setitem)(struct arrayobject *, Py_ssize_t, PyObject *);
#if PY_MAJOR_VERSION >= 3
char *formats;
#endif
} arraydescr;
struct arrayobject {
PyObject_HEAD
Py_ssize_t ob_size;
union {
char *ob_item;
float *as_floats;
double *as_doubles;
int *as_ints;
unsigned int *as_uints;
unsigned char *as_uchars;
signed char *as_schars;
char *as_chars;
unsigned long *as_ulongs;
long *as_longs;
short *as_shorts;
unsigned short *as_ushorts;
Py_UNICODE *as_pyunicodes;
void *as_voidptr;
} data;
Py_ssize_t allocated;
struct arraydescr *ob_descr;
PyObject *weakreflist; /* List of weak references */
#if PY_MAJOR_VERSION >= 3
int ob_exports; /* Number of exported buffers */
#endif
};
#ifndef NO_NEWARRAY_INLINE
// fast creation of a new array
static CYTHON_INLINE PyObject * newarrayobject(PyTypeObject *type, Py_ssize_t size,
struct arraydescr *descr) {
arrayobject *op;
size_t nbytes;
if (size < 0) {
PyErr_BadInternalCall();
return NULL;
}
nbytes = size * descr->itemsize;
// Check for overflow
if (nbytes / descr->itemsize != (size_t)size) {
return PyErr_NoMemory();
}
op = (arrayobject *) type->tp_alloc(type, 0);
if (op == NULL) {
return NULL;
}
op->ob_descr = descr;
op->allocated = size;
op->weakreflist = NULL;
op->ob_size = size;
if (size <= 0) {
op->data.ob_item = NULL;
}
else {
op->data.ob_item = PyMem_NEW(char, nbytes);
if (op->data.ob_item == NULL) {
Py_DECREF(op);
return PyErr_NoMemory();
}
}
return (PyObject *) op;
}
#else
PyObject* newarrayobject(PyTypeObject *type, Py_ssize_t size,
struct arraydescr *descr);
#endif /* ifndef NO_NEWARRAY_INLINE */
// fast resize (reallocation to the point)
// not designed for filing small increments (but for fast opaque array apps)
static CYTHON_INLINE int resize(arrayobject *self, Py_ssize_t n) {
void *items = (void*) self->data.ob_item;
PyMem_Resize(items, char, (size_t)(n * self->ob_descr->itemsize));
if (items == NULL) {
PyErr_NoMemory();
return -1;
}
self->data.ob_item = (char*) items;
self->ob_size = n;
self->allocated = n;
return 0;
}
// suitable for small increments; over allocation 50% ;
static CYTHON_INLINE int resize_smart(arrayobject *self, Py_ssize_t n) {
void *items = (void*) self->data.ob_item;
Py_ssize_t newsize;
if (n < self->allocated && n*4 > self->allocated) {
self->ob_size = n;
return 0;
}
newsize = n + (n / 2) + 1;
if (newsize <= n) { /* overflow */
PyErr_NoMemory();
return -1;
}
PyMem_Resize(items, char, (size_t)(newsize * self->ob_descr->itemsize));
if (items == NULL) {
PyErr_NoMemory();
return -1;
}
self->data.ob_item = (char*) items;
self->ob_size = n;
self->allocated = newsize;
return 0;
}
#endif
/* _ARRAYARRAY_H */
|