class A(object):
def __init__(self):
self.d = RWeakKeyDictionary(KX, A)
def f(self, key):
a = A()
self.d.set(key, a)
return a
class A(object):
def __init__(self):
self.d = RWeakKeyDictionary(KX, A)
def f(self, key):
a = A()
self.d.set(key, a)
return a
def f(n):
k = KX()
v = VX()
if n:
d = empty
else:
d = RWeakKeyDictionary(KX, VX)
d.set(k, v)
return d.get(k) is v
def f(n):
k = KX()
v = VX()
if n:
d = empty
else:
d = RWeakKeyDictionary(KX, VX)
d.set(k, v)
return d.get(k) is v
def f():
d = prebuilt
if d is None:
d = RWeakKeyDictionary(KX, VX)
k1, k3, v1, v2, v3 = g(d)
rgc.collect()
rgc.collect()
assert d.get(k1) is v1
assert d.get(k3) is v3
assert d.get(k1) is not v2
assert d.get(k3) is not v2
assert d.length() == 2
d.set(k1, None)
assert d.get(k1) is None
assert d.get(k3) is v3
assert d.length() == 1
# resizing should also work
lots_of_keys = [KX() for i in range(loop)]
for k in lots_of_keys:
d.set(k, v1)
for k in lots_of_keys:
assert d.get(k) is v1
assert d.get(k1) is None
assert d.get(k3) is v3
assert d.length() == loop + 1
# a subclass
ky = KY()
vy = VY()
d.set(ky, vy)
assert d.get(ky) is vy
assert d.length() == loop + 2
# deleting by storing Nones
for k in lots_of_keys:
d.set(k, None)
for k in lots_of_keys:
assert d.get(k) is None
assert d.get(k1) is None
assert d.get(k3) is v3
assert d.get(ky) is vy
assert d.length() == 2
def f():
d = prebuilt
if d is None:
d = RWeakKeyDictionary(KX, VX)
k1, k3, v1, v2, v3 = g(d)
rgc.collect(); rgc.collect()
assert d.get(k1) is v1
assert d.get(k3) is v3
assert d.get(k1) is not v2
assert d.get(k3) is not v2
assert d.length() == 2
d.set(k1, None)
assert d.get(k1) is None
assert d.get(k3) is v3
assert d.length() == 1
# resizing should also work
lots_of_keys = [KX() for i in range(loop)]
for k in lots_of_keys:
d.set(k, v1)
for k in lots_of_keys:
assert d.get(k) is v1
assert d.get(k1) is None
assert d.get(k3) is v3
assert d.length() == loop + 1
# a subclass
ky = KY()
vy = VY()
d.set(ky, vy)
assert d.get(ky) is vy
assert d.length() == loop + 2
# deleting by storing Nones
for k in lots_of_keys:
d.set(k, None)
for k in lots_of_keys:
assert d.get(k) is None
assert d.get(k1) is None
assert d.get(k3) is v3
assert d.get(ky) is vy
assert d.length() == 2
def add_me():
k = KX()
v = VXDel()
d = RWeakKeyDictionary(KX, VXDel)
d.set(k, v)
return d
def g(x):
if x:
d = RWeakKeyDictionary(KX, VX)
else:
d = RWeakKeyDictionary(KX, VY)
d.set(KX(), VX())
class RefcountState:
def __init__(self, space):
self.space = space
self.py_objects_w2r = {} # { w_obj -> raw PyObject }
self.py_objects_r2w = {} # { addr of raw PyObject -> w_obj }
self.lifeline_dict = RWeakKeyDictionary(W_Root, PyOLifeline)
self.borrow_mapping = {None: {}}
# { w_container -> { w_containee -> None } }
# the None entry manages references borrowed during a call to
# generic_cpy_call()
# For tests
self.non_heaptypes_w = []
def _cleanup_(self):
assert self.borrow_mapping == {None: {}}
self.py_objects_r2w.clear() # is not valid anymore after translation
def init_r2w_from_w2r(self):
"""Rebuilds the dict py_objects_r2w on startup"""
for w_obj, obj in self.py_objects_w2r.items():
ptr = rffi.cast(ADDR, obj)
self.py_objects_r2w[ptr] = w_obj
def print_refcounts(self):
print "REFCOUNTS"
for w_obj, obj in self.py_objects_w2r.items():
print "%r: %i" % (w_obj, obj.c_ob_refcnt)
def get_from_lifeline(self, w_obj):
lifeline = self.lifeline_dict.get(w_obj)
if lifeline is not None: # make old PyObject ready for use in C code
py_obj = lifeline.pyo
assert py_obj.c_ob_refcnt == 0
return py_obj
else:
return lltype.nullptr(PyObject.TO)
def set_lifeline(self, w_obj, py_obj):
self.lifeline_dict.set(w_obj,
PyOLifeline(self.space, py_obj))
def make_borrowed(self, w_container, w_borrowed):
"""
Create a borrowed reference, which will live as long as the container
has a living reference (as a PyObject!)
"""
ref = make_ref(self.space, w_borrowed)
obj_ptr = rffi.cast(ADDR, ref)
borrowees = self.borrow_mapping.setdefault(w_container, {})
if w_borrowed in borrowees:
Py_DecRef(self.space, w_borrowed) # cancel incref from make_ref()
else:
borrowees[w_borrowed] = None
return ref
def reset_borrowed_references(self):
"Used in tests"
for w_container, w_borrowed in self.borrow_mapping.items():
Py_DecRef(self.space, w_borrowed)
self.borrow_mapping = {None: {}}
def delete_borrower(self, w_obj):
"""
Called when a potential container for borrowed references has lost its
last reference. Removes the borrowed references it contains.
"""
if w_obj in self.borrow_mapping: # move to lifeline __del__
for w_containee in self.borrow_mapping[w_obj]:
self.forget_borrowee(w_containee)
del self.borrow_mapping[w_obj]
def swap_borrow_container(self, container):
"""switch the current default contained with the given one."""
if container is None:
old_container = self.borrow_mapping[None]
self.borrow_mapping[None] = {}
return old_container
else:
old_container = self.borrow_mapping[None]
self.borrow_mapping[None] = container
for w_containee in old_container:
self.forget_borrowee(w_containee)
def forget_borrowee(self, w_obj):
"De-register an object from the list of borrowed references"
ref = self.py_objects_w2r.get(w_obj, lltype.nullptr(PyObject.TO))
if not ref:
if DEBUG_REFCOUNT:
print >>sys.stderr, "Borrowed object is already gone!"
return
Py_DecRef(self.space, ref)
class RefcountState:
def __init__(self, space):
self.space = space
self.py_objects_w2r = {} # { w_obj -> raw PyObject }
self.py_objects_r2w = {} # { addr of raw PyObject -> w_obj }
self.lifeline_dict = RWeakKeyDictionary(W_Root, PyOLifeline)
self.borrow_mapping = {None: {}}
# { w_container -> { w_containee -> None } }
# the None entry manages references borrowed during a call to
# generic_cpy_call()
# For tests
self.non_heaptypes_w = []
def _cleanup_(self):
assert self.borrow_mapping == {None: {}}
self.py_objects_r2w.clear() # is not valid anymore after translation
def init_r2w_from_w2r(self):
"""Rebuilds the dict py_objects_r2w on startup"""
for w_obj, obj in self.py_objects_w2r.items():
ptr = rffi.cast(ADDR, obj)
self.py_objects_r2w[ptr] = w_obj
def print_refcounts(self):
print "REFCOUNTS"
for w_obj, obj in self.py_objects_w2r.items():
print "%r: %i" % (w_obj, obj.c_ob_refcnt)
def get_from_lifeline(self, w_obj):
lifeline = self.lifeline_dict.get(w_obj)
if lifeline is not None: # make old PyObject ready for use in C code
py_obj = lifeline.pyo
assert py_obj.c_ob_refcnt == 0
return py_obj
else:
return lltype.nullptr(PyObject.TO)
def set_lifeline(self, w_obj, py_obj):
self.lifeline_dict.set(w_obj, PyOLifeline(self.space, py_obj))
def make_borrowed(self, w_container, w_borrowed):
"""
Create a borrowed reference, which will live as long as the container
has a living reference (as a PyObject!)
"""
ref = make_ref(self.space, w_borrowed)
obj_ptr = rffi.cast(ADDR, ref)
borrowees = self.borrow_mapping.setdefault(w_container, {})
if w_borrowed in borrowees:
Py_DecRef(self.space, w_borrowed) # cancel incref from make_ref()
else:
borrowees[w_borrowed] = None
return ref
def reset_borrowed_references(self):
"Used in tests"
for w_container, w_borrowed in self.borrow_mapping.items():
Py_DecRef(self.space, w_borrowed)
self.borrow_mapping = {None: {}}
def delete_borrower(self, w_obj):
"""
Called when a potential container for borrowed references has lost its
last reference. Removes the borrowed references it contains.
"""
if w_obj in self.borrow_mapping: # move to lifeline __del__
for w_containee in self.borrow_mapping[w_obj]:
self.forget_borrowee(w_containee)
del self.borrow_mapping[w_obj]
def swap_borrow_container(self, container):
"""switch the current default contained with the given one."""
if container is None:
old_container = self.borrow_mapping[None]
self.borrow_mapping[None] = {}
return old_container
else:
old_container = self.borrow_mapping[None]
self.borrow_mapping[None] = container
for w_containee in old_container:
self.forget_borrowee(w_containee)
def forget_borrowee(self, w_obj):
"De-register an object from the list of borrowed references"
ref = self.py_objects_w2r.get(w_obj, lltype.nullptr(PyObject.TO))
if not ref:
if DEBUG_REFCOUNT:
print >> sys.stderr, "Borrowed object is already gone!"
return
Py_DecRef(self.space, ref)
def add_me():
k = KX()
v = VXDel()
d = RWeakKeyDictionary(KX, VXDel)
d.set(k, v)
return d
def g(x):
if x:
d = RWeakKeyDictionary(KX, VX)
else:
d = RWeakKeyDictionary(KX, VY)
d.set(KX(), VX())