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authorLibravatar Nicolas Pitre <nico@fluxnic.net>2013-09-10 18:17:12 -0400
committerLibravatar Junio C Hamano <gitster@pobox.com>2013-09-11 12:25:33 -0700
commit9f36c9b7f77f188db47b80ae1118856249beaa15 (patch)
treefc85141e788ce1e2c989d155f205e29451916624 /Documentation/RelNotes/1.5.3.5.txt
parentGit 1.8.4 (diff)
downloadtgif-9f36c9b7f77f188db47b80ae1118856249beaa15.tar.xz
lookup_object: remove hashtable_index() and optimize hash_obj()
hashtable_index() appears to be a close duplicate of hash_obj(). Keep only the later and make it usable for all cases. Also remove the modulus as this is an expensive operation. The size argument is always a power of 2 anyway, so a simple mask operation provides the same result. On a 'git rev-list --all --objects' run this decreased the time spent in lookup_object from 27.5% to 24.1%. [jc: with a few comments on "modulus turned into mask" by Peff] Signed-off-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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