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Fixing memory leak that leaves values and callbacks in memory indefinitely #542

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Fixing memory leak that leaves values and callbacks in memory indefinitely #542

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15 changes: 14 additions & 1 deletion eel/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@
_eel_js = open(_eel_js_file, encoding='utf-8').read()
_websockets = []
_call_return_values = {}
_call_return_msgs = {}
_call_return_callbacks = {}
_call_number = 0
_exposed_functions = {}
Expand Down Expand Up @@ -305,6 +306,7 @@ def _process_message(message, ws):
elif message['status'] == 'error' and error_callback is not None:
error_callback(message['error'], message['stack'])
else:
_call_return_msgs[call_id] = message
_call_return_values[call_id] = message['value']

else:
Expand Down Expand Up @@ -353,12 +355,23 @@ def _call_return(call):

def return_func(callback=None, error_callback=None):
if callback is not None:
_call_return_callbacks[call_id] = (callback, error_callback)
if call_id in _call_return_msgs:
_call_return_values.pop(call_id)
message = _call_return_msgs.pop(call_id)
if message['status'] == 'ok':
callback(message['value'])
elif message['status'] == 'error' and error_callback is not None:
error_callback(message['error'], message['stack'])
else:
_call_return_callbacks[call_id] = (callback, error_callback)

else:
for w in range(_js_result_timeout):
if call_id in _call_return_values:
_call_return_msgs.pop(call_id, None)
return _call_return_values.pop(call_id)
sleep(0.001)

return return_func


Expand Down