Python源码示例：weakref.getweakrefcount()
示例1
def test_ref_reuse(self):
o = C()
ref1 = weakref.ref(o)
# create a proxy to make sure that there's an intervening creation
# between these two; it should make no difference
proxy = weakref.proxy(o)
ref2 = weakref.ref(o)
self.assertIs(ref1, ref2,
"reference object w/out callback should be re-used")
o = C()
proxy = weakref.proxy(o)
ref1 = weakref.ref(o)
ref2 = weakref.ref(o)
self.assertIs(ref1, ref2,
"reference object w/out callback should be re-used")
self.assertEqual(weakref.getweakrefcount(o), 2,
"wrong weak ref count for object")
del proxy
self.assertEqual(weakref.getweakrefcount(o), 1,
"wrong weak ref count for object after deleting proxy")
示例2
def test_getweakrefcount(self):
o = C()
ref1 = weakref.ref(o)
ref2 = weakref.ref(o, self.callback)
self.assertEqual(weakref.getweakrefcount(o), 2,
"got wrong number of weak reference objects")
proxy1 = weakref.proxy(o)
proxy2 = weakref.proxy(o, self.callback)
self.assertEqual(weakref.getweakrefcount(o), 4,
"got wrong number of weak reference objects")
del ref1, ref2, proxy1, proxy2
self.assertEqual(weakref.getweakrefcount(o), 0,
"weak reference objects not unlinked from"
" referent when discarded.")
# assumes ints do not support weakrefs
self.assertEqual(weakref.getweakrefcount(1), 0,
"got wrong number of weak reference objects for int")
示例3
def test_subclass_refs_dont_replace_standard_refs(self):
class MyRef(weakref.ref):
pass
o = Object(42)
r1 = MyRef(o)
r2 = weakref.ref(o)
self.assertIsNot(r1, r2)
self.assertEqual(weakref.getweakrefs(o), [r2, r1])
self.assertEqual(weakref.getweakrefcount(o), 2)
r3 = MyRef(o)
self.assertEqual(weakref.getweakrefcount(o), 3)
refs = weakref.getweakrefs(o)
self.assertEqual(len(refs), 3)
self.assertIs(r2, refs[0])
self.assertIn(r1, refs[1:])
self.assertIn(r3, refs[1:])
示例4
def test_ref_reuse(self):
o = C()
ref1 = weakref.ref(o)
# create a proxy to make sure that there's an intervening creation
# between these two; it should make no difference
proxy = weakref.proxy(o)
ref2 = weakref.ref(o)
self.assertTrue(ref1 is ref2,
"reference object w/out callback should be re-used")
o = C()
proxy = weakref.proxy(o)
ref1 = weakref.ref(o)
ref2 = weakref.ref(o)
self.assertTrue(ref1 is ref2,
"reference object w/out callback should be re-used")
self.assertTrue(weakref.getweakrefcount(o) == 2,
"wrong weak ref count for object")
del proxy
self.assertTrue(weakref.getweakrefcount(o) == 1,
"wrong weak ref count for object after deleting proxy")
示例5
def test_getweakrefcount(self):
o = C()
ref1 = weakref.ref(o)
ref2 = weakref.ref(o, self.callback)
self.assertTrue(weakref.getweakrefcount(o) == 2,
"got wrong number of weak reference objects")
proxy1 = weakref.proxy(o)
proxy2 = weakref.proxy(o, self.callback)
self.assertTrue(weakref.getweakrefcount(o) == 4,
"got wrong number of weak reference objects")
del ref1, ref2, proxy1, proxy2
self.assertTrue(weakref.getweakrefcount(o) == 0,
"weak reference objects not unlinked from"
" referent when discarded.")
# assumes ints do not support weakrefs
self.assertTrue(weakref.getweakrefcount(1) == 0,
"got wrong number of weak reference objects for int")
示例6
def test_subclass_refs_dont_replace_standard_refs(self):
class MyRef(weakref.ref):
pass
o = Object(42)
r1 = MyRef(o)
r2 = weakref.ref(o)
self.assertTrue(r1 is not r2)
self.assertEqual(weakref.getweakrefs(o), [r2, r1])
self.assertEqual(weakref.getweakrefcount(o), 2)
r3 = MyRef(o)
self.assertEqual(weakref.getweakrefcount(o), 3)
refs = weakref.getweakrefs(o)
self.assertEqual(len(refs), 3)
self.assertTrue(r2 is refs[0])
self.assertIn(r1, refs[1:])
self.assertIn(r3, refs[1:])
示例7
def test_ref_reuse(self):
o = C()
ref1 = weakref.ref(o)
# create a proxy to make sure that there's an intervening creation
# between these two; it should make no difference
proxy = weakref.proxy(o)
ref2 = weakref.ref(o)
self.assertIs(ref1, ref2,
"reference object w/out callback should be re-used")
o = C()
proxy = weakref.proxy(o)
ref1 = weakref.ref(o)
ref2 = weakref.ref(o)
self.assertIs(ref1, ref2,
"reference object w/out callback should be re-used")
self.assertEqual(weakref.getweakrefcount(o), 2,
"wrong weak ref count for object")
del proxy
self.assertEqual(weakref.getweakrefcount(o), 1,
"wrong weak ref count for object after deleting proxy")
示例8
def test_getweakrefcount(self):
o = C()
ref1 = weakref.ref(o)
ref2 = weakref.ref(o, self.callback)
self.assertEqual(weakref.getweakrefcount(o), 2,
"got wrong number of weak reference objects")
proxy1 = weakref.proxy(o)
proxy2 = weakref.proxy(o, self.callback)
self.assertEqual(weakref.getweakrefcount(o), 4,
"got wrong number of weak reference objects")
del ref1, ref2, proxy1, proxy2
self.assertEqual(weakref.getweakrefcount(o), 0,
"weak reference objects not unlinked from"
" referent when discarded.")
# assumes ints do not support weakrefs
self.assertEqual(weakref.getweakrefcount(1), 0,
"got wrong number of weak reference objects for int")
示例9
def test_subclass_refs_dont_replace_standard_refs(self):
class MyRef(weakref.ref):
pass
o = Object(42)
r1 = MyRef(o)
r2 = weakref.ref(o)
self.assertIsNot(r1, r2)
self.assertEqual(weakref.getweakrefs(o), [r2, r1])
self.assertEqual(weakref.getweakrefcount(o), 2)
r3 = MyRef(o)
self.assertEqual(weakref.getweakrefcount(o), 3)
refs = weakref.getweakrefs(o)
self.assertEqual(len(refs), 3)
self.assertIs(r2, refs[0])
self.assertIn(r1, refs[1:])
self.assertIn(r3, refs[1:])
示例10
def test_ref_reuse(self):
o = C()
ref1 = weakref.ref(o)
# create a proxy to make sure that there's an intervening creation
# between these two; it should make no difference
proxy = weakref.proxy(o)
ref2 = weakref.ref(o)
self.assertIs(ref1, ref2,
"reference object w/out callback should be re-used")
o = C()
proxy = weakref.proxy(o)
ref1 = weakref.ref(o)
ref2 = weakref.ref(o)
self.assertIs(ref1, ref2,
"reference object w/out callback should be re-used")
self.assertEqual(weakref.getweakrefcount(o), 2,
"wrong weak ref count for object")
del proxy
self.assertEqual(weakref.getweakrefcount(o), 1,
"wrong weak ref count for object after deleting proxy")
示例11
def test_getweakrefcount(self):
o = C()
ref1 = weakref.ref(o)
ref2 = weakref.ref(o, self.callback)
self.assertEqual(weakref.getweakrefcount(o), 2,
"got wrong number of weak reference objects")
proxy1 = weakref.proxy(o)
proxy2 = weakref.proxy(o, self.callback)
self.assertEqual(weakref.getweakrefcount(o), 4,
"got wrong number of weak reference objects")
del ref1, ref2, proxy1, proxy2
self.assertEqual(weakref.getweakrefcount(o), 0,
"weak reference objects not unlinked from"
" referent when discarded.")
# assumes ints do not support weakrefs
self.assertEqual(weakref.getweakrefcount(1), 0,
"got wrong number of weak reference objects for int")
示例12
def test_subclass_refs_dont_replace_standard_refs(self):
class MyRef(weakref.ref):
pass
o = Object(42)
r1 = MyRef(o)
r2 = weakref.ref(o)
self.assertIsNot(r1, r2)
self.assertEqual(weakref.getweakrefs(o), [r2, r1])
self.assertEqual(weakref.getweakrefcount(o), 2)
r3 = MyRef(o)
self.assertEqual(weakref.getweakrefcount(o), 3)
refs = weakref.getweakrefs(o)
self.assertEqual(len(refs), 3)
self.assertIs(r2, refs[0])
self.assertIn(r1, refs[1:])
self.assertIn(r3, refs[1:])
示例13
def test_ref_reuse(self):
o = C()
ref1 = weakref.ref(o)
# create a proxy to make sure that there's an intervening creation
# between these two; it should make no difference
proxy = weakref.proxy(o)
ref2 = weakref.ref(o)
self.assertIs(ref1, ref2,
"reference object w/out callback should be re-used")
o = C()
proxy = weakref.proxy(o)
ref1 = weakref.ref(o)
ref2 = weakref.ref(o)
self.assertIs(ref1, ref2,
"reference object w/out callback should be re-used")
self.assertEqual(weakref.getweakrefcount(o), 2,
"wrong weak ref count for object")
del proxy
self.assertEqual(weakref.getweakrefcount(o), 1,
"wrong weak ref count for object after deleting proxy")
示例14
def test_getweakrefcount(self):
o = C()
ref1 = weakref.ref(o)
ref2 = weakref.ref(o, self.callback)
self.assertEqual(weakref.getweakrefcount(o), 2,
"got wrong number of weak reference objects")
proxy1 = weakref.proxy(o)
proxy2 = weakref.proxy(o, self.callback)
self.assertEqual(weakref.getweakrefcount(o), 4,
"got wrong number of weak reference objects")
del ref1, ref2, proxy1, proxy2
self.assertEqual(weakref.getweakrefcount(o), 0,
"weak reference objects not unlinked from"
" referent when discarded.")
# assumes ints do not support weakrefs
self.assertEqual(weakref.getweakrefcount(1), 0,
"got wrong number of weak reference objects for int")
示例15
def test_subclass_refs_dont_replace_standard_refs(self):
class MyRef(weakref.ref):
pass
o = Object(42)
r1 = MyRef(o)
r2 = weakref.ref(o)
self.assertIsNot(r1, r2)
self.assertEqual(weakref.getweakrefs(o), [r2, r1])
self.assertEqual(weakref.getweakrefcount(o), 2)
r3 = MyRef(o)
self.assertEqual(weakref.getweakrefcount(o), 3)
refs = weakref.getweakrefs(o)
self.assertEqual(len(refs), 3)
self.assertIs(r2, refs[0])
self.assertIn(r1, refs[1:])
self.assertIn(r3, refs[1:])
示例16
def test_ref_reuse(self):
o = C()
ref1 = weakref.ref(o)
# create a proxy to make sure that there's an intervening creation
# between these two; it should make no difference
proxy = weakref.proxy(o)
ref2 = weakref.ref(o)
self.assertIs(ref1, ref2,
"reference object w/out callback should be re-used")
o = C()
proxy = weakref.proxy(o)
ref1 = weakref.ref(o)
ref2 = weakref.ref(o)
self.assertIs(ref1, ref2,
"reference object w/out callback should be re-used")
self.assertEqual(weakref.getweakrefcount(o), 2,
"wrong weak ref count for object")
del proxy
self.assertEqual(weakref.getweakrefcount(o), 1,
"wrong weak ref count for object after deleting proxy")
示例17
def test_getweakrefcount(self):
o = C()
ref1 = weakref.ref(o)
ref2 = weakref.ref(o, self.callback)
self.assertEqual(weakref.getweakrefcount(o), 2,
"got wrong number of weak reference objects")
proxy1 = weakref.proxy(o)
proxy2 = weakref.proxy(o, self.callback)
self.assertEqual(weakref.getweakrefcount(o), 4,
"got wrong number of weak reference objects")
del ref1, ref2, proxy1, proxy2
self.assertEqual(weakref.getweakrefcount(o), 0,
"weak reference objects not unlinked from"
" referent when discarded.")
# assumes ints do not support weakrefs
self.assertEqual(weakref.getweakrefcount(1), 0,
"got wrong number of weak reference objects for int")
示例18
def test_subclass_refs_dont_replace_standard_refs(self):
class MyRef(weakref.ref):
pass
o = Object(42)
r1 = MyRef(o)
r2 = weakref.ref(o)
self.assertIsNot(r1, r2)
self.assertEqual(weakref.getweakrefs(o), [r2, r1])
self.assertEqual(weakref.getweakrefcount(o), 2)
r3 = MyRef(o)
self.assertEqual(weakref.getweakrefcount(o), 3)
refs = weakref.getweakrefs(o)
self.assertEqual(len(refs), 3)
self.assertIs(r2, refs[0])
self.assertIn(r1, refs[1:])
self.assertIn(r3, refs[1:])
示例19
def test_ref_reuse(self):
o = C()
ref1 = weakref.ref(o)
# create a proxy to make sure that there's an intervening creation
# between these two; it should make no difference
proxy = weakref.proxy(o)
ref2 = weakref.ref(o)
self.assertIs(ref1, ref2,
"reference object w/out callback should be re-used")
o = C()
proxy = weakref.proxy(o)
ref1 = weakref.ref(o)
ref2 = weakref.ref(o)
self.assertIs(ref1, ref2,
"reference object w/out callback should be re-used")
self.assertEqual(weakref.getweakrefcount(o), 2,
"wrong weak ref count for object")
del proxy
self.assertEqual(weakref.getweakrefcount(o), 1,
"wrong weak ref count for object after deleting proxy")
示例20
def test_getweakrefcount(self):
o = C()
ref1 = weakref.ref(o)
ref2 = weakref.ref(o, self.callback)
self.assertEqual(weakref.getweakrefcount(o), 2,
"got wrong number of weak reference objects")
proxy1 = weakref.proxy(o)
proxy2 = weakref.proxy(o, self.callback)
self.assertEqual(weakref.getweakrefcount(o), 4,
"got wrong number of weak reference objects")
del ref1, ref2, proxy1, proxy2
self.assertEqual(weakref.getweakrefcount(o), 0,
"weak reference objects not unlinked from"
" referent when discarded.")
# assumes ints do not support weakrefs
self.assertEqual(weakref.getweakrefcount(1), 0,
"got wrong number of weak reference objects for int")
示例21
def test_subclass_refs_dont_replace_standard_refs(self):
class MyRef(weakref.ref):
pass
o = Object(42)
r1 = MyRef(o)
r2 = weakref.ref(o)
self.assertIsNot(r1, r2)
self.assertEqual(weakref.getweakrefs(o), [r2, r1])
self.assertEqual(weakref.getweakrefcount(o), 2)
r3 = MyRef(o)
self.assertEqual(weakref.getweakrefcount(o), 3)
refs = weakref.getweakrefs(o)
self.assertEqual(len(refs), 3)
self.assertIs(r2, refs[0])
self.assertIn(r1, refs[1:])
self.assertIn(r3, refs[1:])
示例22
def test_ref_reuse(self):
o = C()
ref1 = weakref.ref(o)
# create a proxy to make sure that there's an intervening creation
# between these two; it should make no difference
proxy = weakref.proxy(o)
ref2 = weakref.ref(o)
self.assert_(ref1 is ref2,
"reference object w/out callback should be re-used")
o = C()
proxy = weakref.proxy(o)
ref1 = weakref.ref(o)
ref2 = weakref.ref(o)
self.assert_(ref1 is ref2,
"reference object w/out callback should be re-used")
self.assert_(weakref.getweakrefcount(o) == 2,
"wrong weak ref count for object")
del proxy
extra_collect()
self.assert_(weakref.getweakrefcount(o) == 1,
"wrong weak ref count for object after deleting proxy")
示例23
def test_getweakrefcount(self):
o = C()
ref1 = weakref.ref(o)
ref2 = weakref.ref(o, self.callback)
self.assert_(weakref.getweakrefcount(o) == 2,
"got wrong number of weak reference objects")
proxy1 = weakref.proxy(o)
proxy2 = weakref.proxy(o, self.callback)
self.assert_(weakref.getweakrefcount(o) == 4,
"got wrong number of weak reference objects")
del ref1, ref2, proxy1, proxy2
extra_collect()
self.assert_(weakref.getweakrefcount(o) == 0,
"weak reference objects not unlinked from"
" referent when discarded.")
# assumes ints do not support weakrefs
self.assert_(weakref.getweakrefcount(1) == 0,
"got wrong number of weak reference objects for int")
示例24
def test_subclass_refs_dont_replace_standard_refs(self):
class MyRef(weakref.ref):
pass
o = Object(42)
r1 = MyRef(o)
r2 = weakref.ref(o)
self.assert_(r1 is not r2)
self.assertEqual(weakref.getweakrefs(o), [r2, r1])
self.assertEqual(weakref.getweakrefcount(o), 2)
r3 = MyRef(o)
self.assertEqual(weakref.getweakrefcount(o), 3)
refs = weakref.getweakrefs(o)
self.assertEqual(len(refs), 3)
self.assert_(r2 is refs[0])
self.assert_(r1 in refs[1:])
self.assert_(r3 in refs[1:])
示例25
def test_ref_reuse(self):
o = C()
ref1 = weakref.ref(o)
# create a proxy to make sure that there's an intervening creation
# between these two; it should make no difference
proxy = weakref.proxy(o)
ref2 = weakref.ref(o)
self.assertTrue(ref1 is ref2,
"reference object w/out callback should be re-used")
o = C()
proxy = weakref.proxy(o)
ref1 = weakref.ref(o)
ref2 = weakref.ref(o)
self.assertTrue(ref1 is ref2,
"reference object w/out callback should be re-used")
self.assertTrue(weakref.getweakrefcount(o) == 2,
"wrong weak ref count for object")
del proxy
gc.collect()
self.assertTrue(weakref.getweakrefcount(o) == 1,
"wrong weak ref count for object after deleting proxy")
示例26
def test_getweakrefcount(self):
o = C()
ref1 = weakref.ref(o)
ref2 = weakref.ref(o, self.callback)
self.assertTrue(weakref.getweakrefcount(o) == 2,
"got wrong number of weak reference objects")
proxy1 = weakref.proxy(o)
proxy2 = weakref.proxy(o, self.callback)
self.assertTrue(weakref.getweakrefcount(o) == 4,
"got wrong number of weak reference objects")
del ref1, ref2, proxy1, proxy2
gc.collect()
self.assertTrue(weakref.getweakrefcount(o) == 0,
"weak reference objects not unlinked from"
" referent when discarded.")
# assumes ints do not support weakrefs
self.assertTrue(weakref.getweakrefcount(1) == 0,
"got wrong number of weak reference objects for int")
示例27
def test_subclass_refs_dont_replace_standard_refs(self):
class MyRef(weakref.ref):
pass
o = Object(42)
r1 = MyRef(o)
r2 = weakref.ref(o)
self.assertTrue(r1 is not r2)
self.assertEqual(weakref.getweakrefs(o), [r2, r1])
self.assertEqual(weakref.getweakrefcount(o), 2)
r3 = MyRef(o)
self.assertEqual(weakref.getweakrefcount(o), 3)
refs = weakref.getweakrefs(o)
self.assertEqual(len(refs), 3)
self.assertIn(r1, refs)
self.assertIn(r2, refs)
self.assertIn(r3, refs)
示例28
def test_ref_reuse(self):
o = C()
ref1 = weakref.ref(o)
# create a proxy to make sure that there's an intervening creation
# between these two; it should make no difference
proxy = weakref.proxy(o)
ref2 = weakref.ref(o)
self.assertTrue(ref1 is ref2,
"reference object w/out callback should be re-used")
o = C()
proxy = weakref.proxy(o)
ref1 = weakref.ref(o)
ref2 = weakref.ref(o)
self.assertTrue(ref1 is ref2,
"reference object w/out callback should be re-used")
self.assertTrue(weakref.getweakrefcount(o) == 2,
"wrong weak ref count for object")
del proxy
gc.collect()
self.assertTrue(weakref.getweakrefcount(o) == 1,
"wrong weak ref count for object after deleting proxy")
示例29
def test_getweakrefcount(self):
o = C()
ref1 = weakref.ref(o)
ref2 = weakref.ref(o, self.callback)
self.assertTrue(weakref.getweakrefcount(o) == 2,
"got wrong number of weak reference objects")
proxy1 = weakref.proxy(o)
proxy2 = weakref.proxy(o, self.callback)
self.assertTrue(weakref.getweakrefcount(o) == 4,
"got wrong number of weak reference objects")
del ref1, ref2, proxy1, proxy2
gc.collect()
self.assertTrue(weakref.getweakrefcount(o) == 0,
"weak reference objects not unlinked from"
" referent when discarded.")
# assumes ints do not support weakrefs
self.assertTrue(weakref.getweakrefcount(1) == 0,
"got wrong number of weak reference objects for int")
示例30
def test_subclass_refs_dont_replace_standard_refs(self):
class MyRef(weakref.ref):
pass
o = Object(42)
r1 = MyRef(o)
r2 = weakref.ref(o)
self.assertTrue(r1 is not r2)
self.assertEqual(weakref.getweakrefs(o), [r2, r1])
self.assertEqual(weakref.getweakrefcount(o), 2)
r3 = MyRef(o)
self.assertEqual(weakref.getweakrefcount(o), 3)
refs = weakref.getweakrefs(o)
self.assertEqual(len(refs), 3)
self.assertIn(r1, refs)
self.assertIn(r2, refs)
self.assertIn(r3, refs)
