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42 lines
1.5 KiB
42 lines
1.5 KiB
from types import TracebackType
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from typing_extensions import Self
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from filelock import FileLock as base_FileLock
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from torch.monitor import _WaitCounter
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class FileLock(base_FileLock):
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"""
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This behaves like a normal file lock.
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However, it adds waitcounters for acquiring and releasing the filelock
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as well as for the critical region within it.
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pytorch.filelock.enter - While we're acquiring the filelock.
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pytorch.filelock.region - While we're holding the filelock and doing work.
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pytorch.filelock.exit - While we're releasing the filelock.
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"""
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def __enter__(self) -> Self:
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self.region_counter = _WaitCounter("pytorch.filelock.region").guard()
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with _WaitCounter("pytorch.filelock.enter").guard():
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result = super().__enter__()
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self.region_counter.__enter__()
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return result
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def __exit__(
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self,
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exc_type: type[BaseException] | None,
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exc_value: BaseException | None,
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traceback: TracebackType | None,
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) -> None:
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self.region_counter.__exit__()
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with _WaitCounter("pytorch.filelock.exit").guard():
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# Returns nothing per
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# https://github.com/tox-dev/filelock/blob/57f488ff8fdc2193572efe102408fb63cfefe4e4/src/filelock/_api.py#L379
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super().__exit__(exc_type, exc_value, traceback)
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# Returns nothing per
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# https://github.com/pytorch/pytorch/blob/0f6bfc58a2cfb7a5c052bea618ab62becaf5c912/torch/csrc/monitor/python_init.cpp#L315
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return None
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