def test_create_link_pyobj(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
assert rawrefcount.from_obj(PyObject, p) == lltype.nullptr(PyObjectS)
assert rawrefcount.to_obj(W_Root, ob) == None
rawrefcount.create_link_pyobj(p, ob)
assert ob.c_ob_refcnt == 0
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount.from_obj(PyObject, p) == lltype.nullptr(PyObjectS)
assert rawrefcount.to_obj(W_Root, ob) == p
lltype.free(ob, flavor='raw')
def test_create_link_pyobj(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
assert rawrefcount.from_obj(PyObject, p) == lltype.nullptr(PyObjectS)
assert rawrefcount.to_obj(W_Root, ob) == None
rawrefcount.create_link_pyobj(p, ob)
assert ob.c_ob_refcnt == 0
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount.from_obj(PyObject, p) == lltype.nullptr(PyObjectS)
assert rawrefcount.to_obj(W_Root, ob) == p
lltype.free(ob, flavor='raw')
def test_collect_o_keepalive_w_root(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
p.pyobj = ob
rawrefcount.create_link_pyobj(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount._o_list == [ob]
wr_ob = weakref.ref(ob)
del ob # p remains
rawrefcount._collect()
ob = wr_ob()
assert ob is not None
assert rawrefcount._o_list == [ob]
assert rawrefcount.to_obj(W_Root, ob) == p
assert p.pyobj == ob
lltype.free(ob, flavor='raw')
def test_collect_o_keepalive_w_root(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
p.pyobj = ob
rawrefcount.create_link_pyobj(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount._o_list == [ob]
wr_ob = weakref.ref(ob)
del ob # p remains
rawrefcount._collect()
ob = wr_ob()
assert ob is not None
assert rawrefcount._o_list == [ob]
assert rawrefcount.to_obj(W_Root, ob) == p
assert p.pyobj == ob
lltype.free(ob, flavor='raw')
def test_collect_o_keepalive_pyobject(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
p.pyobj = ob
rawrefcount.create_link_pyobj(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount._o_list == [ob]
wr_ob = weakref.ref(ob)
wr_p = weakref.ref(p)
ob.c_ob_refcnt += 1 # <=
del p
rawrefcount._collect()
p = wr_p()
assert p is None # was unlinked
assert ob.c_ob_refcnt == 1 # != REFCNT_FROM_PYPY_OBJECT + 1
assert rawrefcount._o_list == []
assert rawrefcount.to_obj(W_Root, ob) == None
lltype.free(ob, flavor='raw')
def test_collect_o_keepalive_pyobject(self):
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
p.pyobj = ob
rawrefcount.create_link_pyobj(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount._o_list == [ob]
wr_ob = weakref.ref(ob)
wr_p = weakref.ref(p)
ob.c_ob_refcnt += 1 # <=
del p
rawrefcount._collect()
p = wr_p()
assert p is None # was unlinked
assert ob.c_ob_refcnt == 1 # != REFCNT_FROM_PYPY_OBJECT + 1
assert rawrefcount._o_list == []
assert rawrefcount.to_obj(W_Root, ob) == None
lltype.free(ob, flavor='raw')
def test_collect_o_dies(self):
trigger = []; rawrefcount.init(lambda: trigger.append(1))
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
rawrefcount.create_link_pyobj(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount._o_list == [ob]
wr_ob = weakref.ref(ob)
wr_p = weakref.ref(p)
del ob, p
rawrefcount._collect()
ob = wr_ob()
assert ob is not None
assert trigger == [1]
assert rawrefcount.next_dead(PyObject) == ob
assert rawrefcount.next_dead(PyObject) == lltype.nullptr(PyObjectS)
assert rawrefcount.next_dead(PyObject) == lltype.nullptr(PyObjectS)
assert rawrefcount._o_list == []
assert wr_p() is None
assert ob.c_ob_refcnt == 1 # from the pending list
assert ob.c_ob_pypy_link == 0
lltype.free(ob, flavor='raw')
def test_collect_o_dies(self):
trigger = []
rawrefcount.init(lambda: trigger.append(1))
p = W_Root(42)
ob = lltype.malloc(PyObjectS, flavor='raw', zero=True)
rawrefcount.create_link_pyobj(p, ob)
ob.c_ob_refcnt += REFCNT_FROM_PYPY
assert rawrefcount._o_list == [ob]
wr_ob = weakref.ref(ob)
wr_p = weakref.ref(p)
del ob, p
rawrefcount._collect()
ob = wr_ob()
assert ob is not None
assert trigger == [1]
assert rawrefcount.next_dead(PyObject) == ob
assert rawrefcount.next_dead(PyObject) == lltype.nullptr(PyObjectS)
assert rawrefcount.next_dead(PyObject) == lltype.nullptr(PyObjectS)
assert rawrefcount._o_list == []
assert wr_p() is None
assert ob.c_ob_refcnt == 1 # from the pending list
assert ob.c_ob_pypy_link == 0
lltype.free(ob, flavor='raw')
def _cpyext_attach_pyobj(self, space, py_obj):
self._cpy_ref = py_obj
rawrefcount.create_link_pyobj(self, py_obj)