Own a Win32 HANDLE and close it exactly once.
| 109 | |
| 110 | |
| 111 | class _OwnedHandle: |
| 112 | """Own a Win32 HANDLE and close it exactly once.""" |
| 113 | |
| 114 | def __init__(self, value: int) -> None: |
| 115 | self.value: int | None = value |
| 116 | |
| 117 | def close(self) -> None: |
| 118 | if self.value is not None: |
| 119 | _close_handle(self.value) |
| 120 | self.value = None |
| 121 | |
| 122 | def detach(self) -> int: |
| 123 | if self.value is None: |
| 124 | raise RuntimeError("handle is already closed") |
| 125 | value = self.value |
| 126 | self.value = None |
| 127 | return value |
| 128 | |
| 129 | def __enter__(self) -> _OwnedHandle: |
| 130 | return self |
| 131 | |
| 132 | def __exit__(self, *_: object) -> None: |
| 133 | self.close() |
| 134 | |
| 135 | |
| 136 | if os.name == "nt": |