From 7b6e527f440cd7e6f8be2b07cee320ee6ca18786 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 29 Apr 2024 06:41:38 +0200 Subject: Adding upstream version 1.0.1. Signed-off-by: Daniel Baumann --- mesonbuild/utils/win32.py | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 mesonbuild/utils/win32.py (limited to 'mesonbuild/utils/win32.py') diff --git a/mesonbuild/utils/win32.py b/mesonbuild/utils/win32.py new file mode 100644 index 0000000..2bd4cba --- /dev/null +++ b/mesonbuild/utils/win32.py @@ -0,0 +1,40 @@ +# SPDX-license-identifier: Apache-2.0 +# Copyright 2012-2021 The Meson development team +# Copyright © 2021 Intel Corporation + +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at + +# http://www.apache.org/licenses/LICENSE-2.0 + +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +from __future__ import annotations + +"""Windows specific implementations of mesonlib functionality.""" + +import msvcrt +import typing as T + +from .universal 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() -- cgit v1.2.3