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comparison mercurial/scmutil.py @ 51800:e69e3d585f07

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scmutils: read the requires file before writing to avoid unnecessary rewrite This lets us get away without the repo lock in situations where we need to write requirements, but we know we're not changing the store requirements.
author Arseniy Alekseyev <aalekseyev@janestreet.com>
date Thu, 15 Aug 2024 14:54:22 +0100
parents eb952b2d224c
children 95cdc01f313d
comparison
equal deleted inserted replaced
51799:45c467d8422c 51800:e69e3d585f07
1700 read = vfs.tryread if allowmissing else vfs.read 1700 read = vfs.tryread if allowmissing else vfs.read
1701 return set(read(b'requires').splitlines()) 1701 return set(read(b'requires').splitlines())
1702 1702
1703 1703
1704 def writerequires(opener, requirements) -> None: 1704 def writerequires(opener, requirements) -> None:
1705 with opener(b'requires', b'w', atomictemp=True) as fp: 1705 on_disk = readrequires(opener, True)
1706 for r in sorted(requirements): 1706 if not (on_disk == set(requirements)):
1707 fp.write(b"%s\n" % r) 1707 with opener(b'requires', b'w', atomictemp=True) as fp:
1708 for r in sorted(requirements):
1709 fp.write(b"%s\n" % r)
1708 1710
1709 1711
1710 class filecachesubentry: 1712 class filecachesubentry:
1711 _cacheable: Optional[bool] = None 1713 _cacheable: Optional[bool] = None
1712 1714