Commit63104d6

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Avoid taking a lock for reading (#1338)

This isn't needed as git will replace this file atomicially,hence we always see a fully written file when reading.Only when writing we need to obtain a lock.

1 parent2141eae commit63104d6Copy full SHA for 63104d6

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2 files changed

-13

lines changed

git
- ext
  - gitdb
- index
  - base.py

2 files changed

-13

lines changed

`‎git/ext/gitdb`

Submodulegitdb updated17 files

`‎git/index/base.py`

Lines changed: 2 additions & 12 deletions

Original file line number	Diff line number	Diff line change
`@@ -129,28 +129,18 @@ def _set_cache_(self, attr: str) -> None:`
`129`	`129`	`ifattr=="entries":`
`130`	`130`	`# read the current index`
`131`	`131`	`# try memory map for speed`
`132`		`-lfd=LockedFD(self._file_path)`
`133`	`132`	`ok=False`
`134`	`133`	`try:`
`135`		`-fd=lfd.open(write=False,stream=False)`
`136`		`-ok=True`
	`134`	`+fd=os.open(self._file_path,os.O_RDONLY)`
`137`	`135`	`exceptOSError:`
`138`	`136`	`# in new repositories, there may be no index, which means we are empty`
`139`	`137`	`self.entries:Dict[Tuple[PathLike,StageType],IndexEntry]= {}`
`140`	`138`	`returnNone`
`141`		`-finally:`
`142`		`-ifnotok:`
`143`		`-lfd.rollback()`
`144`	`139`	`# END exception handling`
`145`	`140`
`146`	`141`	`stream=file_contents_ro(fd,stream=True,allow_mmap=True)`
`147`	`142`
`148`		`-try:`
`149`		`-self._deserialize(stream)`
`150`		`-finally:`
`151`		`-lfd.rollback()`
`152`		`-# The handles will be closed on destruction`
`153`		`-# END read from default index on demand`
	`143`	`+self._deserialize(stream)`
`154`	`144`	`else:`
`155`	`145`	`super(IndexFile,self)._set_cache_(attr)`
`156`	`146`

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Commit63104d6

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2 files changed

2 files changed

`‎git/ext/gitdb`

`‎git/index/base.py`

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