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
|
import unittest
from test import support
import time
resource = support.import_module('resource')
# This test is checking a few specific problem spots with the resource module.
class ResourceTest(unittest.TestCase):
def test_args(self):
self.assertRaises(TypeError, resource.getrlimit)
self.assertRaises(TypeError, resource.getrlimit, 42, 42)
self.assertRaises(TypeError, resource.setrlimit)
self.assertRaises(TypeError, resource.setrlimit, 42, 42, 42)
def test_fsize_ismax(self):
try:
(cur, max) = resource.getrlimit(resource.RLIMIT_FSIZE)
except AttributeError:
pass
else:
# RLIMIT_FSIZE should be RLIM_INFINITY, which will be a really big
# number on a platform with large file support. On these platforms,
# we need to test that the get/setrlimit functions properly convert
# the number to a C long long and that the conversion doesn't raise
# an error.
self.assertEqual(resource.RLIM_INFINITY, max)
resource.setrlimit(resource.RLIMIT_FSIZE, (cur, max))
def test_fsize_enforced(self):
try:
(cur, max) = resource.getrlimit(resource.RLIMIT_FSIZE)
except AttributeError:
pass
else:
# Check to see what happens when the RLIMIT_FSIZE is small. Some
# versions of Python were terminated by an uncaught SIGXFSZ, but
# pythonrun.c has been fixed to ignore that exception. If so, the
# write() should return EFBIG when the limit is exceeded.
# At least one platform has an unlimited RLIMIT_FSIZE and attempts
# to change it raise ValueError instead.
try:
try:
resource.setrlimit(resource.RLIMIT_FSIZE, (1024, max))
limit_set = True
except ValueError:
limit_set = False
f = open(support.TESTFN, "wb")
try:
f.write(b"X" * 1024)
try:
f.write(b"Y")
f.flush()
# On some systems (e.g., Ubuntu on hppa) the flush()
# doesn't always cause the exception, but the close()
# does eventually. Try flushing several times in
# an attempt to ensure the file is really synced and
# the exception raised.
for i in range(5):
time.sleep(.1)
f.flush()
except IOError:
if not limit_set:
raise
if limit_set:
# Close will attempt to flush the byte we wrote
# Restore limit first to avoid getting a spurious error
resource.setrlimit(resource.RLIMIT_FSIZE, (cur, max))
finally:
f.close()
finally:
if limit_set:
resource.setrlimit(resource.RLIMIT_FSIZE, (cur, max))
support.unlink(support.TESTFN)
def test_fsize_toobig(self):
# Be sure that setrlimit is checking for really large values
too_big = 10**50
try:
(cur, max) = resource.getrlimit(resource.RLIMIT_FSIZE)
except AttributeError:
pass
else:
try:
resource.setrlimit(resource.RLIMIT_FSIZE, (too_big, max))
except (OverflowError, ValueError):
pass
try:
resource.setrlimit(resource.RLIMIT_FSIZE, (max, too_big))
except (OverflowError, ValueError):
pass
def test_getrusage(self):
self.assertRaises(TypeError, resource.getrusage)
self.assertRaises(TypeError, resource.getrusage, 42, 42)
usageself = resource.getrusage(resource.RUSAGE_SELF)
usagechildren = resource.getrusage(resource.RUSAGE_CHILDREN)
# May not be available on all systems.
try:
usageboth = resource.getrusage(resource.RUSAGE_BOTH)
except (ValueError, AttributeError):
pass
try:
usage_thread = resource.getrusage(resource.RUSAGE_THREAD)
except (ValueError, AttributeError):
pass
# Issue 6083: Reference counting bug
def test_setrusage_refcount(self):
try:
limits = resource.getrlimit(resource.RLIMIT_CPU)
except AttributeError:
pass
else:
class BadSequence:
def __len__(self):
return 2
def __getitem__(self, key):
if key in (0, 1):
return len(tuple(range(1000000)))
raise IndexError
resource.setrlimit(resource.RLIMIT_CPU, BadSequence())
def test_main(verbose=None):
support.run_unittest(ResourceTest)
if __name__ == "__main__":
test_main()
|
