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# mode: run
# tag: c-api
# PyMem_RawMalloc tests that need to be disabled for Python < 3.5
# (some of these would work of Python 3.4, but it's easier to disable
# them in one place)
from cpython cimport mem
cdef short _assert_calloc(short* s, int n) except -1 with gil:
"""Assert array ``s`` of length ``n`` is zero and return 3."""
assert not s[0] and not s[n - 1]
s[0] += 1
s[n - 1] += 3
for i in range(1, n - 1):
assert not s[i]
return s[n - 1]
def test_pycalloc():
"""
>>> test_pycalloc()
3
"""
cdef short* s = <short*> mem.PyMem_Calloc(10, sizeof(short))
if not s:
raise MemoryError()
try:
return _assert_calloc(s, 10)
finally:
mem.PyMem_Free(s)
def test_pymalloc_raw():
"""
>>> test_pymalloc_raw()
3
"""
cdef short i
cdef short* s
cdef char* m
cdef char* m2 = NULL
with nogil:
s = <short*> mem.PyMem_RawCalloc(10, sizeof(short))
if not s:
raise MemoryError()
try:
i = _assert_calloc(s, 10)
finally:
mem.PyMem_RawFree(s)
m = <char*> mem.PyMem_RawMalloc(20)
if not m:
raise MemoryError()
try:
m[0] = 1
m[1] = 2
m[2] = i
m2 = <char*> mem.PyMem_RawRealloc(m, 10)
if m2:
m = m2
retval = m[2]
finally:
mem.PyMem_RawFree(m)
assert m2
return retval
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