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Fix potential race condition when slice messages arrive after clearing build plate

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Fixes #6245.
This commit is contained in:
Ghostkeeper 2019-08-26 09:15:37 +02:00
parent 8d8f18d953
commit 23f4aa6e4f
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GPG Key ID: 86BEF881AE2CF276
1 changed files with 8 additions and 2 deletions
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10
plugins/CuraEngineBackend/CuraEngineBackend.py
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@ -671,14 +671,20 @@ class CuraEngineBackend(QObject, Backend):
#
# \param message The protobuf message containing g-code, encoded as UTF-8.
def _onGCodeLayerMessage(self, message: Arcus.PythonMessage) -> None:
self._scene.gcode_dict[self._start_slice_job_build_plate].append(message.data.decode("utf-8", "replace")) #type: ignore #Because we generate this attribute dynamically.
try:
self._scene.gcode_dict[self._start_slice_job_build_plate].append(message.data.decode("utf-8", "replace")) #type: ignore #Because we generate this attribute dynamically.
except KeyError: # Can occur if the g-code has been cleared while a slice message is still arriving from the other end.
pass # Throw the message away.
## Called when a g-code prefix message is received from the engine.
#
# \param message The protobuf message containing the g-code prefix,
# encoded as UTF-8.
def _onGCodePrefixMessage(self, message: Arcus.PythonMessage) -> None:
self._scene.gcode_dict[self._start_slice_job_build_plate].insert(0, message.data.decode("utf-8", "replace")) #type: ignore #Because we generate this attribute dynamically.
try:
self._scene.gcode_dict[self._start_slice_job_build_plate].insert(0, message.data.decode("utf-8", "replace")) #type: ignore #Because we generate this attribute dynamically.
except KeyError: # Can occur if the g-code has been cleared while a slice message is still arriving from the other end.
pass # Throw the message away.
## Creates a new socket connection.
def _createSocket(self, protocol_file: str = None) -> None: