def ll_weakref_create(targetaddr):
link = llop.boehm_malloc_atomic(llmemory.Address, sizeof_weakreflink)
if not link:
raise MemoryError
plink = llmemory.cast_adr_to_ptr(link, lltype.Ptr(WEAKLINK))
plink[0] = targetaddr
llop.boehm_disappearing_link(lltype.Void, link, targetaddr)
return llmemory.cast_ptr_to_weakrefptr(plink)
def ll_weakref_create(targetaddr):
link = llop.boehm_malloc_atomic(llmemory.Address, sizeof_weakreflink)
if not link:
raise MemoryError
plink = llmemory.cast_adr_to_ptr(link, lltype.Ptr(WEAKLINK))
plink[0] = targetaddr
llop.boehm_disappearing_link(lltype.Void, link, targetaddr)
return llmemory.cast_ptr_to_weakrefptr(plink)
def weakref_create_getlazy(self, objgetter):
# we have to be lazy in reading the llinterp variable containing
# the 'obj' pointer, because the gc.malloc() call below could
# move it around
type_id = self.get_type_id(gctypelayout.WEAKREF)
addr = self.gc.malloc(type_id, None, zero=False)
result = llmemory.cast_adr_to_ptr(addr, gctypelayout.WEAKREFPTR)
result.weakptr = llmemory.cast_ptr_to_adr(objgetter())
return llmemory.cast_ptr_to_weakrefptr(result)
def weakref_create_getlazy(self, objgetter):
# we have to be lazy in reading the llinterp variable containing
# the 'obj' pointer, because the gc.malloc() call below could
# move it around
type_id = self.get_type_id(gctypelayout.WEAKREF)
addr = self.gc.malloc(type_id, None, zero=False)
result = llmemory.cast_adr_to_ptr(addr, gctypelayout.WEAKREFPTR)
result.weakptr = llmemory.cast_ptr_to_adr(objgetter())
return llmemory.cast_ptr_to_weakrefptr(result)
def __setitem__(self, index, newvalue):
if index != 0:
raise IndexError("address of local vars only support [0] indexing")
if self.v.concretetype == llmemory.WeakRefPtr:
# fish some more
assert isinstance(newvalue, llmemory.fakeaddress)
p = llmemory.cast_ptr_to_weakrefptr(newvalue.ptr)
else:
p = llmemory.cast_adr_to_ptr(newvalue, self.v.concretetype)
self.frame.setvar(self.v, p)
def __setitem__(self, index, newvalue):
if index != 0:
raise IndexError("address of local vars only support [0] indexing")
if self.v.concretetype == llmemory.WeakRefPtr:
# fish some more
assert isinstance(newvalue, llmemory.fakeaddress)
p = llmemory.cast_ptr_to_weakrefptr(newvalue.ptr)
else:
p = llmemory.cast_adr_to_ptr(newvalue, self.v.concretetype)
self.frame.setvar(self.v, p)
def op_cast_ptr_to_weakrefptr(self, obj):
return llmemory.cast_ptr_to_weakrefptr(obj)
def op_cast_ptr_to_weakrefptr(self, obj):
return llmemory.cast_ptr_to_weakrefptr(obj)
