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2378ea5515
BZ:https://bugzilla.tianocore.org/show_bug.cgi?id=1894 Basetool need a CopyFileOnChange() function to avoid cache file writing race in multi-thread build. Some platforms build fail with file IO writing race issue when the build cache is enabled to store cache files in multi-threads. This is because common same library cache files (e.g. some libs in MdePkg) can be stored by many different driver modules' build threads at same time. Current build cache need a function to check whether the same cache file already exist, and only copy source file if it is different from the destination file. This patch introduces an atomic copy function to avoid duplicated cache files copy. Cc: Liming Gao <liming.gao@intel.com> Cc: Bob Feng <bob.c.feng@intel.com> Cc: Christian Rodriguez <christian.rodriguez@intel.com> Signed-off-by: Steven Shi <steven.shi@intel.com> Reviewed-by: Bob Feng <bob.c.feng@intel.com>
80 lines
1.8 KiB
Python
80 lines
1.8 KiB
Python
## @file
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# Override built in module os to provide support for long file path
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#
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# Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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#
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from __future__ import absolute_import
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import os
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from . import LongFilePathOsPath
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from Common.LongFilePathSupport import LongFilePath
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import time
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path = LongFilePathOsPath
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def access(path, mode):
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return os.access(LongFilePath(path), mode)
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def remove(path):
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Timeout = 0.0
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while Timeout < 5.0:
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try:
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return os.remove(LongFilePath(path))
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except:
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time.sleep(0.1)
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Timeout = Timeout + 0.1
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return os.remove(LongFilePath(path))
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def removedirs(name):
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return os.removedirs(LongFilePath(name))
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def rmdir(path):
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return os.rmdir(LongFilePath(path))
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def mkdir(path):
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return os.mkdir(LongFilePath(path))
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def makedirs(name, mode=0o777):
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return os.makedirs(LongFilePath(name), mode)
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def rename(old, new):
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return os.rename(LongFilePath(old), LongFilePath(new))
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def chdir(path):
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return os.chdir(LongFilePath(path))
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def chmod(path, mode):
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return os.chmod(LongFilePath(path), mode)
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def stat(path):
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return os.stat(LongFilePath(path))
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def utime(path, times):
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return os.utime(LongFilePath(path), times)
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def listdir(path):
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List = []
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uList = os.listdir(u"%s" % LongFilePath(path))
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for Item in uList:
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List.append(Item)
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return List
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if hasattr(os, 'replace'):
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def replace(src, dst):
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return os.replace(LongFilePath(src), LongFilePath(dst))
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environ = os.environ
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getcwd = os.getcwd
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chdir = os.chdir
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walk = os.walk
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W_OK = os.W_OK
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F_OK = os.F_OK
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sep = os.sep
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linesep = os.linesep
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getenv = os.getenv
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pathsep = os.pathsep
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name = os.name
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SEEK_SET = os.SEEK_SET
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SEEK_END = os.SEEK_END
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