src/tree-cache.c


Log

Author Commit Date CI Message
Carlos Martín Nieto bb0757d5 2014-10-22T21:09:31 tree-cache: correct the entry_count calculation The entry_count field is the amount of index entries covered by a particular cache entry, that is how many files are there (recursively) under a particular directory. The current code that attemps to do this is severely defincient and is trying to count the amount of children, which always comes up to zero. We don't even need to recount, since we have the information during the cache creation. We can take that number and keep it, as we only ever invalidate or replace.
Sven Strickroth cf1013a8 2014-10-12T17:21:17 There is no "z" size specifier on MSVC See http://msdn.microsoft.com/en-us/library/tcxf1dw6.aspx and https://stackoverflow.com/questions/6655410/why-doesnt-zd-printf-format-work-in-vs2010 Signed-off-by: Sven Strickroth <email@cs-ware.de>
Carlos Martín Nieto 795d8e93 2014-09-29T08:03:22 index: make sure to write cached subtrees if parent is invalidated If e.g. the root tree is invalidated, we still want to write out its children, since those may still have valid cache entries.
Carlos Martín Nieto c2f8b215 2014-09-28T07:00:49 index: write out the tree cache extension Keeping the cache around after read-tree is only one part of the optimisation opportunities. In order to share the cache between program instances, we need to write the TREE extension to the index. Do so, taking the opportunity to rename 'entries' to 'entry_count' to match the name given in the format description. The included test is rather trivial, but works as a sanity check.
Carlos Martín Nieto 46bb0067 2014-07-11T11:52:38 tree-cache: remove the parent pointer This wasn't used. We invalidate based on the full path, so we always go down the tree, never up.
Carlos Martín Nieto 6843cebe 2014-07-10T14:10:39 index: fill the tree cache when reading from a tree When reading from a tree, we know what every tree is going to look like, so we can fill in the tree cache completely, making use of the index for modification of trees a lot quicker.
Carlos Martín Nieto 19c88310 2014-07-10T13:48:13 tree-cache: move to use a pool allocator This simplifies freeing the entries quite a bit; though there aren't that many failure paths right now, introducing filling the cache from a tree will introduce more. This makes sure not to leak memory on errors.
Carlos Martín Nieto d091a9db 2014-07-10T12:21:28 tree-cache: extract the allocation
Russell Belfer 1fa17b5c 2014-03-14T22:01:30 Minor tree cache speedups While I was looking at the conflict cleanup code, I looked over at the tree cache code, since we clear the tree cache for each entry that gets removed and there is some redundancy there. I made some small tweaks to avoid extra calls to strchr and strlen in a few circumstances.
nulltoken a5d73188 2013-11-19T13:16:09 tree-cache: Fix error message typo
nulltoken 3d523345 2013-11-19T13:15:47 tree-cache: Don't segfault upon corruption
nulltoken 82e6a42c 2013-11-19T13:13:51 tree-cache: Zero out the allocated tree children array
nulltoken 7b69289f 2013-11-19T12:54:57 tree-cache: Free the tree upon the detection of a corrupted child
Edward Thomson 359fc2d2 2013-01-08T17:07:25 update copyrights
Nguyễn Thái Ngọc Duy 08f3d6ca 2012-12-12T19:23:05 tree cache: loosen negative entry count check While C Git has been writing entry count -1 (ie. never other negative numbers) as invalid since day 1, it accepts all negative entry counts as invalid. JGit follows the same rule. libgit2 should also follow, or the index that works with C Git or JGit may someday be rejected by libgit2. Other reimplementations like dulwich and grit have not bothered with parsing or writing tree cache.
Vicent Martí 3f035860 2012-06-07T22:43:03 misc: Fix warnings from PVS Studio trial
Vicent Martí 3fbcac89 2012-05-02T19:56:38 Remove old and unused error codes
Carlos Martín Nieto 2218fd57 2012-04-20T02:23:14 tree-cache: don't error out on a childless invalidated entry The code used to assume that there had to be data after the newline in a tree cache extension entry. This isn't true for a childless invalidated entry if it's the last one, as there won't be any children nor a hash to take up space. Adapt the off-by-one comparison to also work in this case. Fixes #633.
Carlos Martín Nieto 05862156 2012-04-20T02:23:14 tree-cache: don't error out on a childless invalidated entry The code used to assume that there had to be data after the newline in a tree cache extension entry. This isn't true for a childless invalidated entry if it's the last one, as there won't be any children nor a hash to take up space. Adapt the off-by-one comparison to also work in this case. Fixes #633.
schu 5e0de328 2012-02-13T17:10:24 Update Copyright header Signed-off-by: schu <schu-github@schulog.org>
Vicent Marti 3286c408 2011-10-28T14:51:13 global: Properly use `git__` memory wrappers Ensure that all memory related functions (malloc, calloc, strdup, free, etc) are using their respective `git__` wrappers.
Carlos Martín Nieto b183ffe7 2011-07-26T12:26:12 Make tree cache name a flex-array Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Carlos Martín Nieto 69bffab9 2011-07-26T14:58:32 Add git_tree_cache_invalidate_path Whenever a file is updated in the index, each tree leading towards it needs to be invalidated. Provide the supporting function. Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Carlos Martín Nieto 3ba69ba8 2011-08-02T15:27:42 Add git_tree_cache_get Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Carlos Martín Nieto acd31b4a 2011-07-26T12:44:06 tree cache: correctly handle invalidated trees The fix introduced in a02fc2cd1 (2011-05-24; index: correctly parse invalidated TREE extensions) threw out the rest of the data in the extension if it found an invalidated entry. This was the result of incorrect reading of the documentation. Insted, keep reading the extension, as there may be cached data we can use. Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Carlos Martín Nieto b4171320 2011-07-26T11:34:54 Move the tree cache functions to their own file Rename git_index_tree to git_tree_cache. Signed-off-by: Carlos Martín Nieto <cmn@elego.de>