| # SPDX-License-Identifier: Apache-2.0 |
| # Copyright 2012-2021 The Meson development team |
| # Copyright © 2021-2023 Intel Corporation |
| |
| from __future__ import annotations |
| |
| """Windows specific implementations of mesonlib functionality.""" |
| |
| import msvcrt |
| import typing as T |
| |
| from .core import MesonException |
| from .platform import BuildDirLock as BuildDirLockBase |
| |
| __all__ = ['BuildDirLock'] |
| |
| class BuildDirLock(BuildDirLockBase): |
| |
| def __enter__(self) -> None: |
| self.lockfile = open(self.lockfilename, 'w', encoding='utf-8') |
| try: |
| msvcrt.locking(self.lockfile.fileno(), msvcrt.LK_NBLCK, 1) |
| except (BlockingIOError, PermissionError): |
| self.lockfile.close() |
| raise MesonException('Some other Meson process is already using this build directory. Exiting.') |
| |
| def __exit__(self, *args: T.Any) -> None: |
| msvcrt.locking(self.lockfile.fileno(), msvcrt.LK_UNLCK, 1) |
| self.lockfile.close() |
