pytorch-lightning

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# Copyright The Lightning AI team.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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#     http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from abc import ABC, abstractmethod
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from lightning.fabric.strategies.launchers.launcher import _Launcher as _FabricLauncher
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from lightning.pytorch.trainer.connectors.signal_connector import _SIGNUM
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class _Launcher(_FabricLauncher, ABC):
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    @abstractmethod
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    def kill(self, signum: _SIGNUM) -> None:
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        """Kill existing alive processes."""
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