git/dir.h, branch v2.17.2

Merge branch 'nd/fix-untracked-cache-invalidation'

2018-02-27T18:33:50Z

Some bugs around "untracked cache" feature have been fixed. * nd/fix-untracked-cache-invalidation: dir.c: ignore paths containing .git when invalidating untracked cache dir.c: stop ignoring opendir() error in open_cached_dir() dir.c: fix missing dir invalidation in untracked code dir.c: avoid stat() in valid_cached_dir() status: add a failing test showing a core.untrackedCache bug

dir.c: ignore paths containing .git when invalidating untracked cache

2018-02-07T20:27:02Z

read_directory() code ignores all paths named ".git" even if it's not a valid git repository. See treat_path() for details. Since ".git" is basically invisible to read_directory(), when we are asked to invalidate a path that contains ".git", we can safely ignore it because the slow path would not consider it anyway. This helps when fsmonitor is used and we have a real ".git" repo at worktree top. Occasionally .git/index will be updated and if the fsmonitor hook does not filter it, untracked cache is asked to invalidate the path ".git/index". Without this patch, we invalidate the root directory unncessarily, which: - makes read_directory() fall back to slow path for root directory (slower) - makes the index dirty (because UNTR extension is updated). Depending on the index size, writing it down could also be slow. A note about the new "safe_path" knob. Since this new check could be relatively expensive, avoid it when we know it's not needed. If the path comes from the index, it can't contain ".git". If it does contain, we may be screwed up at many more levels, not just this one. Noticed-by: Ævar Arnfjörð Bjarmason Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano

dir: convert struct sha1_stat to use object_id

2018-01-30T18:42:36Z

Convert the declaration of struct sha1_stat. Adjust all usages of this struct and replace hash{clr,cmp,cpy} with oid{clr,cmp,cpy} wherever possible. Rename it to struct oid_stat. Rename static function load_sha1_stat to load_oid_stat. Remove macro EMPTY_BLOB_SHA1_BIN, as it's no longer used. Signed-off-by: Patryk Obara Signed-off-by: Junio C Hamano

Merge branch 'jh/object-filtering'

2017-12-27T19:16:21Z

In preparation for implementing narrow/partial clone, the object walking machinery has been taught a way to tell it to "filter" some objects from enumeration. * jh/object-filtering: rev-list: support --no-filter argument list-objects-filter-options: support --no-filter list-objects-filter-options: fix 'keword' typo in comment pack-objects: add list-objects filtering rev-list: add list-objects filtering support list-objects: filter objects in traverse_commit_list oidset: add iterator methods to oidset oidmap: add oidmap iterator methods dir: allow exclusions from blob in addition to file

dir: allow exclusions from blob in addition to file

2017-11-22T05:11:56Z

Refactor add_excludes() to separate the reading of the exclude file into a buffer and the parsing of the buffer into exclude_list items. Add add_excludes_from_blob_to_list() to allow an exclude file be specified with an OID without assuming a local worktree or index exists. Refactor read_skip_worktree_file_from_index() and add do_read_blob() to eliminate duplication of preliminary processing of blob contents. Signed-off-by: Jeff Hostetler Reviewed-by: Jonathan Tan Signed-off-by: Junio C Hamano

Merge branch 'bp/fsmonitor'

2017-11-21T05:07:50Z

We learned to talk to watchman to speed up "git status" and other operations that need to see which paths have been modified. * bp/fsmonitor: fsmonitor: preserve utf8 filenames in fsmonitor-watchman log fsmonitor: read entirety of watchman output fsmonitor: MINGW support for watchman integration fsmonitor: add a performance test fsmonitor: add a sample integration script for Watchman fsmonitor: add test cases for fsmonitor extension split-index: disable the fsmonitor extension when running the split index test fsmonitor: add a test tool to dump the index extension update-index: add fsmonitor support to update-index ls-files: Add support in ls-files to display the fsmonitor valid bit fsmonitor: add documentation for the fsmonitor extension. fsmonitor: teach git to optionally utilize a file system monitor to speed up detecting new or changed files. update-index: add a new --force-write-index option preload-index: add override to enable testing preload-index bswap: add 64 bit endianness helper get_be64

status: add option to show ignored files differently

2017-10-31T02:54:21Z

Teach the status command more flexibility in how ignored files are reported. Currently, the reporting of ignored files and untracked files are linked. You cannot control how ignored files are reported independently of how untracked files are reported (i.e. `all` vs `normal`). This makes it impossible to show untracked files with the `all` option, but show ignored files with the `normal` option. This work 1) adds the ability to control the reporting of ignored files independently of untracked files and 2) introduces the concept of status reporting ignored paths that explicitly match an ignored pattern. There are 2 benefits to these changes: 1) if a consumer needs all untracked files but not all ignored files, there is a performance benefit to not scanning all contents of an ignored directory and 2) returning ignored files that explicitly match a path allow a consumer to make more informed decisions about when a status result might be stale. This commit implements --ignored=matching with --untracked-files=all. The following commit will implement --ignored=matching with --untracked=files=normal. As an example of where this flexibility could be useful is that our application (Visual Studio) runs the status command and presents the output. It shows all untracked files individually (e.g. using the '--untracked-files==all' option), and would like to know about which paths are ignored. It uses information about ignored paths to make decisions about when the status result might have changed. Additionally, many projects place build output into directories inside a repository's working directory (e.g. in "bin/" and "obj/" directories). Normal usage is to explicitly ignore these 2 directory names in the .gitignore file (rather than or in addition to the *.obj pattern).If an application could know that these directories are explicitly ignored, it could infer that all contents are ignored as well and make better informed decisions about files in these directories. It could infer that any changes under these paths would not affect the output of status. Additionally, there can be a significant performance benefit by avoiding scanning through ignored directories. When status is set to report matching ignored files, it has the following behavior. Ignored files and directories that explicitly match an exclude pattern are reported. If an ignored directory matches an exclude pattern, then the path of the directory is returned. If a directory does not match an exclude pattern, but all of its contents are ignored, then the contained files are reported instead of the directory. Signed-off-by: Jameson Miller Signed-off-by: Junio C Hamano

fsmonitor: teach git to optionally utilize a file system monitor to speed up detecting new or changed files.

2017-10-01T08:23:01Z

When the index is read from disk, the fsmonitor index extension is used to flag the last known potentially dirty index entries. The registered core.fsmonitor command is called with the time the index was last updated and returns the list of files changed since that time. This list is used to flag any additional dirty cache entries and untracked cache directories. We can then use this valid state to speed up preload_index(), ie_match_stat(), and refresh_cache_ent() as they do not need to lstat() files to detect potential changes for those entries marked CE_FSMONITOR_VALID. In addition, if the untracked cache is turned on valid_cached_dir() can skip checking directories for new or changed files as fsmonitor will invalidate the cache only for those directories that have been identified as having potential changes. To keep the CE_FSMONITOR_VALID state accurate during git operations; when git updates a cache entry to match the current state on disk, it will now set the CE_FSMONITOR_VALID bit. Inversely, anytime git changes a cache entry, the CE_FSMONITOR_VALID bit is cleared and the corresponding untracked cache directory is marked invalid. Signed-off-by: Ben Peart Signed-off-by: Junio C Hamano

Merge branch 'pc/dir-count-slashes'

2017-06-22T21:15:21Z

Three instances of the same helper function have been consolidated to one. * pc/dir-count-slashes: dir: create function count_slashes()

dir: create function count_slashes()

2017-06-12T20:26:55Z

Similar functions exist in apply.c and builtin/show-branch.c for counting the number of slashes in a string. Also in the later patches, we introduce a third caller for the same. Hence, we unify it now by cleaning the existing functions and declaring a common function count_slashes in dir.h and implementing it in dir.c to remove this code duplication. Mentored-by: Christian Couder Mentored-by: Stefan Beller Signed-off-by: Junio C Hamano Signed-off-by: Prathamesh Chavan Signed-off-by: Junio C Hamano