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Made utils.file.mktemp a little more stochastic.

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This commit is contained in:
Jeremy Fincher 2005-02-18 07:04:48 +00:00
parent 8756b79cc4
commit 6aca01bafb
2 changed files with 13 additions and 3 deletions
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10
src/utils/file.py
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@ -42,10 +42,14 @@ def mktemp(suffix=''):
m = md5.md5(suffix) m = md5.md5(suffix)
r.seed(time.time()) r.seed(time.time())
s = str(r.getstate()) s = str(r.getstate())
for x in xrange(0, random.randrange(400), random.randrange(1, 5)): period = random.random()
m.update(str(x)) now = start = time.time()
while start + period < now:
time.sleep() # Induce a context switch, if possible.
now = time.time()
m.update(str(random.random()))
m.update(s) m.update(s)
m.update(str(time.time())) m.update(str(now))
s = m.hexdigest() s = m.hexdigest()
return sha.sha(s + str(time.time())).hexdigest() + suffix return sha.sha(s + str(time.time())).hexdigest() + suffix

6
test/test_utils.py
View File

@ -458,6 +458,12 @@ class FileTest(SupyTestCase):
self.assertEqual(list(utils.file.nonCommentNonEmptyLines(L)), self.assertEqual(list(utils.file.nonCommentNonEmptyLines(L)),
['foo', 'bar', 'biff']) ['foo', 'bar', 'biff'])
def testMktemp(self):
# This is mostly to test that it actually halts.
self.failUnless(utils.file.mktemp())
self.failUnless(utils.file.mktemp())
self.failUnless(utils.file.mktemp())
class NetTest(SupyTestCase): class NetTest(SupyTestCase):
def testEmailRe(self): def testEmailRe(self):