[jes: adusted test number to avoid conflicts, fixed non-portable use of
the 'export' statement]
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
If multiple threads access a directory that is not yet in the cache, the
directory will be loaded by each thread. Only one of the results is added
to the cache, all others are leaked. This wastes performance and memory.
On cache miss, add a future object to the cache to indicate that the
directory is currently being loaded. Subsequent threads register themselves
with the future object and wait. When the first thread has loaded the
directory, it replaces the future object with the result and notifies
waiting threads.
Signed-off-by: Karsten Blees <blees@dcon.de>
Checking the work tree status is quite slow on Windows, due to slow lstat
emulation (git calls lstat once for each file in the index). Windows
operating system APIs seem to be much better at scanning the status
of entire directories than checking single files.
Add an lstat implementation that uses a cache for lstat data. Cache misses
read the entire parent directory and add it to the cache. Subsequent lstat
calls for the same directory are served directly from the cache.
Also implement opendir / readdir / closedir so that they create and use
directory listings in the cache.
The cache doesn't track file system changes and doesn't plug into any
modifying file APIs, so it has to be explicitly enabled for git functions
that don't modify the working copy.
Note: in an earlier version of this patch, the cache was always active and
tracked file system changes via ReadDirectoryChangesW. However, this was
much more complex and had negative impact on the performance of modifying
git commands such as 'git checkout'.
Signed-off-by: Karsten Blees <blees@dcon.de>
Add a macro to mark code sections that only read from the file system,
along with a config option and documentation.
This facilitates implementation of relatively simple file system level
caches without the need to synchronize with the file system.
Enable read-only sections for 'git status' and preload_index.
Signed-off-by: Karsten Blees <blees@dcon.de>
Emulating the POSIX lstat API on Windows via GetFileAttributes[Ex] is quite
slow. Windows operating system APIs seem to be much better at scanning the
status of entire directories than checking single files. A caching
implementation may improve performance by bulk-reading entire directories
or reusing data obtained via opendir / readdir.
Make the lstat implementation pluggable so that it can be switched at
runtime, e.g. based on a config option.
Signed-off-by: Karsten Blees <blees@dcon.de>
Emulating the POSIX dirent API on Windows via FindFirstFile/FindNextFile is
pretty staightforward, however, most of the information provided in the
WIN32_FIND_DATA structure is thrown away in the process. A more
sophisticated implementation may cache this data, e.g. for later reuse in
calls to lstat.
Make the dirent implementation pluggable so that it can be switched at
runtime, e.g. based on a config option.
Define a base DIR structure with pointers to readdir/closedir that match
the opendir implementation (i.e. similar to vtable pointers in OOP).
Define readdir/closedir so that they call the function pointers in the DIR
structure. This allows to choose the opendir implementation on a
call-by-call basis.
Move the fixed sized dirent.d_name buffer to the dirent-specific DIR
structure, as d_name may be implementation specific (e.g. a caching
implementation may just set d_name to point into the cache instead of
copying the entire file name string).
Signed-off-by: Karsten Blees <blees@dcon.de>
The top level documentation "git help git" still pointed at the
documentation set hosted at now-defunct google-code repository.
Update it to point to https://git.github.io/htmldocs/git.html
instead.
* jn/preformatted-doc-url:
doc: git-htmldocs.googlecode.com is no more
A bug, which caused "git p4" while running under verbose mode to
report paths that are omitted due to branch prefix incorrectly, has
been fixed; the command said "Ignoring file outside of prefix" for
paths that are _inside_.
* ao/p4-has-branch-prefix-fix:
git-p4: correct hasBranchPrefix verbose output
One among four invocations of readlink(1) in our test suite has
been rewritten so that the test can run on systems without the
command (others are in valgrind test framework and t9802).
* ak/t7800-wo-readlink:
t7800: readlink may not be available
The internal code used to show local timezone offset is not
prepared to handle timestamps beyond year 2100, and gave a
bogus offset value to the caller. Use a more benign looking
+0000 instead and let "git log" going in such a case, instead
of aborting.
* jk/tzoffset-fix:
local_tzoffset: detect errors from tm_to_time_t
t0006: test various date formats
t0006: rename test-date's "show" to "relative"
Some platform-specific code had non-ANSI strict declarations of C
functions that do not take any parameters, which has been
corrected.
* js/mingw-parameter-less-c-functions:
mingw: let the build succeed with DEVELOPER=1
Fix unnecessarily waste in the idiomatic use of ': ${VAR=default}'
to set the default value, without enclosing it in double quotes.
* lc/shell-default-value-noexpand:
sh-setup: enclose setting of ${VAR=default} in double-quotes
Fix an unintended regression in v2.9 that breaks "clone --depth"
that recurses down to submodules by forcing the submodules to also
be cloned shallowly, which many server instances that host upstream
of the submodules are not prepared for.
* sb/clone-shallow-passthru:
clone: do not let --depth imply --shallow-submodules
Formats of the various data (and how to validate them) where we use
GPG signature have been documented.
* mg/signature-doc:
Documentation/technical: signed merge tag format
Documentation/technical: signed commit format
Documentation/technical: signed tag format
Documentation/technical: describe signature formats
"git bisect" makes an internal call to "git diff-tree" when
bisection finds the culprit, but this call did not initialize the
data structure to pass to the diff-tree API correctly.
* jk/bisect-show-tree:
bisect: always call setup_revisions after init_revisions
The ownership rule for the piece of memory that hold references to
be fetched in "git fetch" was screwy, which has been cleaned up.
* km/fetch-do-not-free-remote-name:
builtin/fetch.c: don't free remote->name after fetch
"log --graph --format=" learned that "%>|(N)" specifies the width
relative to the terminal's left edge, not relative to the area to
draw text that is to the right of the ancestry-graph section. It
also now accepts negative N that means the column limit is relative
to the right border.
* nd/graph-width-padded:
pretty.c: support <direction>|(<negative number>) forms
pretty: pass graph width to pretty formatting for use in '%>|(N)'
"git add -i/-p" learned to honor diff.compactionHeuristic
experimental knob, so that the user can work on the same hunk split
as "git diff" output.
* jk/add-i-diff-compact-heuristics:
add--interactive: respect diff.compactionHeuristic
"git cherry-pick A" worked on an unborn branch, but "git
cherry-pick A..B" didn't.
* mg/cherry-pick-multi-on-unborn:
cherry-pick: allow to pick to unborn branches
Comments about misbehaving FreeBSD shells have been clarified with
the version number (9.x and before are broken, newer ones are OK).
* em/newer-freebsd-shells-are-fine-with-returns:
rebase: update comment about FreeBSD /bin/sh
"git status" used to say "working directory" when it meant "working
tree".
* lv/status-say-working-tree-not-directory:
Use "working tree" instead of "working directory" for git status
"git update-index --add --chmod=+x file" may be usable as an escape
hatch, but not a friendly thing to force for people who do need to
use it regularly. "git add --chmod=+x file" can be used instead.
* et/add-chmod-x:
add: add --chmod=+x / --chmod=-x options
A codepath that used alloca(3) to place an unbounded amount of data
on the stack has been updated to avoid doing so.
* jk/avoid-unbounded-alloca:
tree-diff: avoid alloca for large allocations
The git-prompt scriptlet (in contrib/) was not friendly with those
who uses "set -u", which has been fixed.
* vs/prompt-avoid-unset-variable:
git-prompt.sh: Don't error on null ${ZSH,BASH}_VERSION, $short_sha
"git reflog" stopped upon seeing an entry that denotes a branch
creation event (aka "unborn"), which made it appear as if the
reflog was truncated.
* sg/reflog-past-root:
reflog: continue walking the reflog past root commits
The documentation tries to consistently spell "GPG"; when
referring to the specific program name, "gpg" is used.
* dn/gpg-doc:
Documentation: GPG capitalization
The documentation set has been updated so that literal commands,
configuration variables and environment variables are consistently
typeset in fixed-width font and bold in manpages.
* tr/doc-tt:
doc: change configuration variables format
doc: more consistency in environment variables format
doc: change environment variables format
doc: clearer rule about formatting literals
As of 1a9d15d (tempfile: a new module for handling temporary files,
2015-08-10), the temporary files which are used by the lock file
machinery adjust the permissions, and to do that, the config is read,
which in turn requires the config to be read.
This means that the runtime prefix needs to be resolved properly, but we
did not set that correctly in credential-store.
The symptom of this bug: when running
printf '%s\n%s\n%s\n%s\n' \
'protocol=https' 'host=gitblub.com' \
'username=hello' 'password=world' |
git credential-store store
an assertion is thrown:
Assertion failed!
Program: ...\libexec\git-core\git-credential-store.exe
File: exec_cmd.c, Line 23
Expression: argv0_path
This application has requested the Runtime to terminate it in an
unusual way. Please contact the application's support team for
more information.
This fixes https://github.com/git-for-windows/git/issues/766
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
"git show -W" (extend hunks to cover the entire function, delimited
by lines that match the "funcname" pattern) used to show the entire
file when a change added an entire function at the end of the file,
which has been fixed.
* rs/xdiff-hunk-with-func-line:
xdiff: fix merging of appended hunk with -W
grep: -W: don't extend context to trailing empty lines
t7810: add test for grep -W and trailing empty context lines
xdiff: don't trim common tail with -W
xdiff: -W: don't include common trailing empty lines in context
xdiff: ignore empty lines before added functions with -W
xdiff: handle appended chunks better with -W
xdiff: factor out match_func_rec()
t4051: rewrite, add more tests
"git rev-list --count" whose walk-length is limited with "-n"
option did not work well with the counting optimized to look at the
bitmap index.
* jk/rev-list-count-with-bitmap:
rev-list: disable bitmaps when "-n" is used with listing objects
rev-list: "adjust" results of "--count --use-bitmap-index -n"
The commands in `git log` family take %C(auto) in a custom format
string. This unconditionally turned the color on, ignoring
--no-color or with --color=auto when the output is not connected to
a tty; this was corrected to make the format truly behave as
"auto".
* et/pretty-format-c-auto:
format_commit_message: honor `color=auto` for `%C(auto)`
