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ad7a51d8
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2021-10-07T13:26:52
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refs: Speed up packed lookups.
Currently ref lookups require loading the entire packed-refs file into
a hashmap in memory. For repos with large numbers of refs this can be
painfully slow.
This patch replaces the existing lookup code and instead mmap()'s the
packed-refs file and performs a binary search to locate the ref entry.
Git uses a similiar approach.
The old hash table codepath is still used for unsorted packed-refs files.
This patch also fixes a minor bug where the "peeled" trait is never
parsed correctly from the packed-refs header.
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17820381
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2013-11-14T14:05:52
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Rename tests-clar to tests
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fd29cd13
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2012-03-31T16:10:01
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Moved testing resources to clar, and removed old tests directory.
Removed the BUILD_CLAR CMake flag, and updated the readme.
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9d77d83a
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2011-06-07T03:38:09
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Revert "threads: Fix TLS declarations"
This commit uploaded an old broken test. Oops!
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64fe8c62
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2011-06-07T03:22:32
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threads: Fix TLS declarations
Cleanup the thread-utils file. Do not define TLS if libgit2 is not
threadsafe.
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9282e921
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2010-12-27T20:34:19
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Merge nulltoken's reference parsing code
All the commits have been squashed into a single one before refactoring
the final code, to keep everything tidy.
Individual commit messages are as follows:
Added repository reference looking up functionality placeholder.
Added basic reference database definition and caching infrastructure.
Removed useless constant.
Added GIT_EINVALIDREFNAME error and description. Added missing description for GIT_EBAREINDEX.
Added GIT_EREFCORRUPTED error and description.
Added GIT_ETOONESTEDSYMREF error and description.
Added resolving of direct and symbolic references.
Prepared the packed-refs parsing.
Added parsing of the packed-refs file content.
When no loose reference has been found, the full content of the packed-refs file is parsed. All of the new (i.e. not previously parsed as a loose reference) references are eagerly stored in the cached references storage.
The method packed_reference_file__parse() is in deer need of some refactoring. :-)
Extracted to a method the parsing of the peeled target of a tag.
Extracted to a method the parsing of a standard packed ref.
Fixed leaky removal of the cached references.
Ensured that a previously parsed packed reference isn't returned if a more up-to-date loose reference exists.
Enhanced documentation of git_repository_reference_lookup().
Moved some refs related constants from repository.c to refs.h.
Made parsing of a packed tag reference more robust.
Updated git_repository_reference_lookup() documentation.
Added some references to the test repository.
Added some tests covering tag references looking up.
Added some tests covering symbolic and head references looking up.
Added some tests covering packed references looking up.
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