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
|
import py
import sys
from rpython.rtyper.lltypesystem import lltype
from rpython.rlib import rawstorage
from rpython.rlib.rawstorage import alloc_raw_storage, free_raw_storage,\
raw_storage_setitem, raw_storage_getitem, AlignmentError,\
raw_storage_setitem_unaligned, raw_storage_getitem_unaligned
from rpython.rtyper.test.tool import BaseRtypingTest
from rpython.translator.c.test.test_genc import compile
def test_untranslated_storage():
r = alloc_raw_storage(37)
raw_storage_setitem(r, 8, 1<<30)
res = raw_storage_getitem(lltype.Signed, r, 8)
assert res == 1<<30
raw_storage_setitem(r, 8, 3.14)
res = raw_storage_getitem(lltype.Float, r, 8)
assert res == 3.14
py.test.raises(AlignmentError, raw_storage_getitem, lltype.Signed, r, 3)
py.test.raises(AlignmentError, raw_storage_setitem, r, 3, 42.5)
free_raw_storage(r)
def test_untranslated_storage_unaligned(monkeypatch):
monkeypatch.setattr(rawstorage, 'misaligned_is_fine', False)
r = alloc_raw_storage(15)
raw_storage_setitem_unaligned(r, 3, 1<<30)
res = raw_storage_getitem_unaligned(lltype.Signed, r, 3)
assert res == 1<<30
raw_storage_setitem_unaligned(r, 3, 3.14)
res = raw_storage_getitem_unaligned(lltype.Float, r, 3)
assert res == 3.14
free_raw_storage(r)
class TestRawStorage(BaseRtypingTest):
def test_storage_int(self):
def f(i):
r = alloc_raw_storage(24)
raw_storage_setitem(r, 8, i)
res = raw_storage_getitem(lltype.Signed, r, 8)
free_raw_storage(r)
return res
x = self.interpret(f, [1<<30])
assert x == 1 << 30
def test_storage_float_unaligned(self, monkeypatch):
def f(v):
r = alloc_raw_storage(24)
raw_storage_setitem_unaligned(r, 3, v)
res = raw_storage_getitem_unaligned(lltype.Float, r, 3)
free_raw_storage(r)
return res
monkeypatch.setattr(rawstorage, 'misaligned_is_fine', False)
x = self.interpret(f, [3.14])
assert x == 3.14
class TestCBackend(object):
def test_backend_int(self):
def f(i):
r = alloc_raw_storage(24)
raw_storage_setitem(r, 8, i)
res = raw_storage_getitem(lltype.Signed, r, 8)
free_raw_storage(r)
return res != i
fc = compile(f, [int])
x = fc(-sys.maxint // 3)
assert x == 0
def test_backend_float_unaligned(self, monkeypatch):
def f(v):
r = alloc_raw_storage(24)
raw_storage_setitem_unaligned(r, 3, v)
res = raw_storage_getitem_unaligned(lltype.Float, r, 3)
free_raw_storage(r)
return res != v
if monkeypatch is not None:
monkeypatch.setattr(rawstorage, 'misaligned_is_fine', False)
fc = compile(f, [float])
x = fc(-3.14)
assert x == 0
def test_backend_float_unaligned_allow_misalign(self):
self.test_backend_float_unaligned(monkeypatch=None)
|
