def __del__(self):
if func_graph_module is None or memory is None:
return
try:
while self._cache:
self._cache.popitem()
memory.dismantle_ordered_dict(self._cache)
except: # pylint: disable=bare-except
pass
def clear_captures(self):
# TODO(b/115366440): Delete this method when a custom OrderedDict is added.
# Clearing captures using clear() leaves some cycles around.
while self._captures:
self._captures.popitem()
memory.dismantle_ordered_dict(self._captures)
while self._deferred_captures:
self._deferred_captures.popitem()
memory.dismantle_ordered_dict(self._deferred_captures)
def dismantle_func_graph(func_graph):
"""Removes reference cycles in `func_graph` FuncGraph.
Helpful for making sure the garbage collector doesn't need to run when
the FuncGraph goes out of scope, e.g. in tests using defun with
@test_util.run_in_graph_and_eager_modes(assert_no_eager_garbage=True).
Args:
func_graph: A `FuncGraph` object to destroy. `func_graph` is unusable
after this function.
"""
# TODO(b/115366440): Delete this method when a custom OrderedDict is added.
# Clearing captures using clear() leaves some cycles around.
while func_graph.captures:
func_graph.captures.popitem()
memory.dismantle_ordered_dict(func_graph.captures)
ops.dismantle_graph(func_graph)
def dismantle_func_graph(func_graph):
"""Removes reference cycles in `func_graph` FuncGraph.
Helpful for making sure the garbage collector doesn't need to run when
the FuncGraph goes out of scope, e.g. in tests using defun with
@test_util.run_in_graph_and_eager_modes(assert_no_eager_garbage=True).
Args:
func_graph: A `FuncGraph` object to destroy. `func_graph` is unusable
after this function.
"""
# TODO(b/115366440): Delete this method when a custom OrderedDict is added.
# Clearing captures using clear() leaves some cycles around.
while func_graph.captures:
func_graph.captures.popitem()
memory.dismantle_ordered_dict(func_graph.captures)
ops.dismantle_graph(func_graph)