kernel/git - git - PowerEL Git System

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Author	SHA1	Message	Date
Junio C Hamano	749864627c	Add cache-tree. The cache_tree data structure is to cache tree object names that would result from the current index file. The idea is to have an optional file to record each tree object name that corresponds to a directory path in the cache when we run write_cache(), and read it back when we run read_cache(). During various index manupulations, we selectively invalidate the parts so that the next write-tree can bypass regenerating tree objects for unchanged parts of the directory hierarchy. We could perhaps make the cache-tree data an optional part of the index file, but that would involve the index format updates, so unless we need it for performance reasons, the current plan is to use a separate file, $GIT_DIR/index.aux to store this information and link it with the index file with the checksum that is already used for index file integrity check. Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago

Author

SHA1

Message

Date

Junio C Hamano

749864627c

Add cache-tree.

The cache_tree data structure is to cache tree object names that
would result from the current index file.

The idea is to have an optional file to record each tree object
name that corresponds to a directory path in the cache when we
run write_cache(), and read it back when we run read_cache().
During various index manupulations, we selectively invalidate
the parts so that the next write-tree can bypass regenerating
tree objects for unchanged parts of the directory hierarchy.

We could perhaps make the cache-tree data an optional part of
the index file, but that would involve the index format updates,
so unless we need it for performance reasons, the current plan
is to use a separate file, $GIT_DIR/index.aux to store this
information and link it with the index file with the checksum
that is already used for index file integrity check.

Signed-off-by: Junio C Hamano <junkio@cox.net>

19 years ago

128 Commits (7f46e7ead1d82538866265228f9d743f0e93e17a)