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In git-compat-util.h, we do
#define _XOPEN_SOURCE 600
#define _XOPEN_SOURCE_EXTENDED 1
unless we are on BSD or SCO.
On OpenSolaris (200811), /usr/include/sys/feature_tests.h has this nice
table:
Feature Test Macro Specification
------------------------------------------------ -------------
_XOPEN_SOURCE XPG3
_XOPEN_SOURCE && _XOPEN_VERSION = 4 XPG4
_XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED = 1 XPG4v2
_XOPEN_SOURCE = 500 XPG5
_XOPEN_SOURCE = 600 (or POSIX_C_SOURCE=200112L) XPG6
Later in the same header, compilation with -c99 is made to fail if _XPG6 is
not set, like this:
#if defined(_STDC_C99) && (defined(__XOPEN_OR_POSIX) && !defined(_XPG6))
#error "Compiler or options invalid for pre-UNIX 03 X/Open applications \
and pre-2001 POSIX applications"
#elif ...
The problem is that they check things in an order that is inconvenient for
us. When they see _XOPEN_SOURCE_EXTENDED, they declare that we are XPG4v2,
regardless of the value of _XOPEN_SOURCE.
To work around this problem, do not define _XOPEN_SOURCE_EXTENDED on
Sun's.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This seem to be a very common pattern in the current code.
The function prints a generic removal failure message, the file name
which failed and readable errno presentation. The function preserves
errno and always returns the value unlink(2) returned, but prints
no message for ENOENT, as it was the most often filtered out in the
code calling unlink. Besides, removing a file is anyway the purpose of
calling unlink.
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Similar to other BSD variants, it needs USE_ST_TIMESPEC.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Commit e4c72923 (write_entry(): use fstat() instead of lstat() when file
is open, 2009-02-09) introduced an optimization of write_entry().
Unfortunately, we cannot take advantage of this optimization on Windows
because there is no guarantee that the time stamps are updated before the
file is closed:
"The only guarantee about a file timestamp is that the file time is
correctly reflected when the handle that makes the change is closed."
(http://msdn.microsoft.com/en-us/library/ms724290(VS.85).aspx)
The failure of this optimization on Windows can be observed most easily by
running a 'git checkout' that has to update several large files. In this
case, 'git checkout' will report modified files, but infact only the
timestamps were incorrectly recorded in the index, as can be verified by a
subsequent 'git diff', which shows no change.
Dmitry Potapov reports the same fix needs on Cygwin; this commit contains
his updates for that.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add USE_WIN32_MMAP which triggers the use of windows' native
file memory mapping functionality in git_mmap()/git_munmap() functions.
As git functions currently use mmap with MAP_PRIVATE set only, this
implementation supports only that mode for now.
On Windows, offsets for memory mapped files need to match the allocation
granularity. Take this into account when calculating the packed git-
windowsize and file offsets. At the moment, the only function which makes
use of offsets in conjunction with mmap is use_pack() in sha1-file.c.
Git fast-import's code path tries to map a portion of the temporary
packfile that exceeds the current filesize, i.e. offset+length is
greater than the filesize. The NO_MMAP code worked with that since pread()
just reads the file content until EOF and returns gracefully, while
MapViewOfFile() aborts the mapping and returns 'Access Denied'.
Working around that by determining the filesize and adjusting the length
parameter.
Signed-off-by: Janos Laube <janos.dev@gmail.com>
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* kb/checkout-optim:
Revert "lstat_cache(): print a warning if doing ping-pong between cache types"
checkout bugfix: use stat.mtime instead of stat.ctime in two places
Makefile: Set compiler switch for USE_NSEC
Create USE_ST_TIMESPEC and turn it on for Darwin
Not all systems use st_[cm]tim field for ns resolution file timestamp
Record ns-timestamps if possible, but do not use it without USE_NSEC
write_index(): update index_state->timestamp after flushing to disk
verify_uptodate(): add ce_uptodate(ce) test
make USE_NSEC work as expected
fix compile error when USE_NSEC is defined
check_updates(): effective removal of cache entries marked CE_REMOVE
lstat_cache(): print a warning if doing ping-pong between cache types
show_patch_diff(): remove a call to fstat()
write_entry(): use fstat() instead of lstat() when file is open
write_entry(): cleanup of some duplicated code
create_directories(): remove some memcpy() and strchr() calls
unlink_entry(): introduce schedule_dir_for_removal()
lstat_cache(): swap func(length, string) into func(string, length)
lstat_cache(): generalise longest_match_lstat_cache()
lstat_cache(): small cleanup and optimisation
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Not all OSes use st_ctim and st_mtim in their struct stat. In
particular, it appears that OS X uses st_*timespec instead. So add a
Makefile variable and #define called USE_ST_TIMESPEC to switch the
USE_NSEC defines to use st_*timespec.
This also turns it on by default for OS X (Darwin) machines. Likely
this is a sane default for other BSD kernels as well, but I don't have
any to test that assumption on.
Signed-off-by: Brian Gernhardt <benji@silverinsanity.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Traditionally, the lack of USE_NSEC meant "do not record nor use the
nanosecond resolution part of the file timestamps". To avoid problems on
filesystems that lose the ns part when the metadata is flushed to the disk
and then later read back in, disabling USE_NSEC has been a good idea in
general.
If you are on a filesystem without such an issue, it does not hurt to read
and store them in the cached stat data in the index entries even if your
git is compiled without USE_NSEC. The index left with such a version of
git can be read by git compiled with USE_NSEC and it can make use of the
nanosecond part to optimize the check to see if the path on the filesystem
hsa been modified since we last looked at.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add a standard definition of isascii() and use it to replace an open
coded high-bit test in pretty.c. While we're there, write the ESC
char as the more commonly used '\033' instead of as 0x1b to enhance
its grepability.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jc/maint-1.6.0-pack-directory:
Make sure objects/pack exists before creating a new pack
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In a repository created with git older than f49fb35 (git-init-db: create
"pack" subdirectory under objects, 2005-06-27), objects/pack/ directory is
not created upon initialization. It was Ok because subdirectories are
created as needed inside directories init-db creates, and back then,
packfiles were recent invention.
After the said commit, new codepaths started relying on the presense of
objects/pack/ directory in the repository. This was exacerbated with
8b4eb6b (Do not perform cross-directory renames when creating packs,
2008-09-22) that moved the location temporary pack files are created from
objects/ directory to objects/pack/ directory, because moving temporary to
the final location was done carefully with lazy leading directory creation.
Many packfile related operations in such an old repository can fail
mysteriously because of this.
This commit introduces two helper functions to make things work better.
- odb_mkstemp() is a specialized version of mkstemp() to refactor the
code and teach it to create leading directories as needed;
- odb_pack_keep() refactors the code to create a ".keep" file while
create leading directories as needed.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add is_regex_special(), a character class macro for chars that have a
special meaning in regular expressions.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Replace isspecial() by the new macro is_glob_special(), which is more,
well, specialized. The former included the NUL char in its character
class, while the letter only included characters that are special to
file name globbing.
The new name contains underscores because they enhance readability
considerably now that it's made up of three words. Renaming the
function is necessary to document its changed scope.
The call sites of isspecial() are updated to check explicitly for NUL.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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lstat/stat functions in Cygwin are very slow, because they try to emulate
some *nix things that Git does not actually need. This patch adds Win32
specific implementation of these functions for Cygwin.
This implementation handles most situation directly but in some rare cases
it falls back on the implementation provided for Cygwin. This is necessary
for two reasons:
- Cygwin has its own file hierarchy, so absolute paths used in Cygwin is
not suitable to be used Win32 API. cygwin_conv_to_win32_path can not be
used because it automatically dereference Cygwin symbol links, also it
causes extra syscall. Fortunately Git rarely use absolute paths, so we
always use Cygwin implementation for absolute paths.
- Support of symbol links. Cygwin stores symbol links as ordinary using
one of two possible formats. Therefore, the fast implementation falls
back to Cygwin functions if it detects potential use of symbol links.
The speed of this implementation should be the same as mingw_lstat for
common cases, but it is considerable slower when the specified file name
does not exist.
Despite all efforts to make the fast implementation as robust as possible,
it may not work well for some very rare situations. I am aware only one
situation: use Cygwin mount to bind unrelated paths inside repository
together. Therefore, the core.ignoreCygwinFSTricks configuration option is
provided, which controls whether native or Cygwin version of stat is used.
Signed-off-by: Dmitry Potapov <dpotapov@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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This removes three functions that are not used anywhere.
Signed-off-by: Nanako Shiraishi <nanako3@lavabit.com>
Acked-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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The following syntax:
char foo[] = {
[0] = 1,
[7] = 2,
[15] = 3
};
is a c99 construct which some compilers do not support even though they
support other c99 constructs. This construct can be avoided by folding
these 'special' test cases into the sane_ctype array and making use of
the related infrastructure.
Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* rs/imap:
Documentation: Improve documentation for git-imap-send(1)
imap-send.c: more style fixes
imap-send.c: style fixes
git-imap-send: Support SSL
git-imap-send: Allow the program to be run from subdirectories of a git tree
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Some platforms do not have st_blocks member in "struct stat"; mingw
already emulates it by rounding it up to closest 512-byte blocks (even
though it could overcount when a file has holes).
The reason to use the member is only to figure out how many kilobytes the
files occupy on-disk, so give a helper function in git-compat-util.h to
compute this value.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Johannes Sixt <johannes.sixt@telecom.at>
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Allow SSL to be used when a imaps:// URL is used for the host name.
Also, automatically use TLS when not using imaps:// by using the IMAP
STARTTLS command, if the server supports it.
Tested with Courier and Gimap IMAP servers.
Signed-off-by: Robert Shearman <robertshearman@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* mv/merge-in-c:
reduce_heads(): protect from duplicate input
reduce_heads(): thinkofix
Add a new test for git-merge-resolve
t6021: add a new test for git-merge-resolve
Teach merge.log to "git-merge" again
Build in merge
Fix t7601-merge-pull-config.sh on AIX
git-commit-tree: make it usable from other builtins
Add new test case to ensure git-merge prepends the custom merge message
Add new test case to ensure git-merge reduces octopus parents when possible
Introduce reduce_heads()
Introduce get_merge_bases_many()
Add new test to ensure git-merge handles more than 25 refs.
Introduce get_octopus_merge_bases() in commit.c
git-fmt-merge-msg: make it usable from other builtins
Move read_cache_unmerged() to read-cache.c
Add new test to ensure git-merge handles pull.twohead and pull.octopus
Move parse-options's skip_prefix() to git-compat-util.h
Move commit_list_count() to commit.c
Move split_cmdline() to alias.c
Conflicts:
Makefile
parse-options.c
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Since 6e1c23442 we make use of these C99 constructs, but this commit did
not provide fallbacks for non-C99 systems.
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* j6t/mingw: (38 commits)
compat/pread.c: Add a forward declaration to fix a warning
Windows: Fix ntohl() related warnings about printf formatting
Windows: TMP and TEMP environment variables specify a temporary directory.
Windows: Make 'git help -a' work.
Windows: Work around an oddity when a pipe with no reader is written to.
Windows: Make the pager work.
When installing, be prepared that template_dir may be relative.
Windows: Use a relative default template_dir and ETC_GITCONFIG
Windows: Compute the fallback for exec_path from the program invocation.
Turn builtin_exec_path into a function.
Windows: Use a customized struct stat that also has the st_blocks member.
Windows: Add a custom implementation for utime().
Windows: Add a new lstat and fstat implementation based on Win32 API.
Windows: Implement a custom spawnve().
Windows: Implement wrappers for gethostbyname(), socket(), and connect().
Windows: Work around incompatible sort and find.
Windows: Implement asynchronous functions as threads.
Windows: Disambiguate DOS style paths from SSH URLs.
Windows: A rudimentary poll() emulation.
Windows: Implement start_command().
...
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builtin-remote.c and parse-options.c both have a skip_prefix() function,
for the same purpose. Move parse-options's one to git-compat-util.h and
let builtin-remote use it as well.
Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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read_in_full()'s is used in compat/pread.c. read_in_full() is
declared in cache.h. But we can't include cache.h because too
many macros are defined there. Using read_in_full() without
including cache.h is dangerous because we wouldn't recognize if
its prototyp changed. gcc issues a warning about that.
This commit adds a forward declaration to git-compat-util.h.
git-compat-util.h is included by compat/pread.c _and_ cache.h.
Hence, changes in cache.h would be detected.
Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
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We will use it from the MinGW port's gettimeofday() substitution.
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
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Before we can successfully parse a builtin command from the program name
we must strip off unneeded parts, that is, the file extension.
Furthermore, we must take Windows style path names into account when we
parse the program name.
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
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GIT's guts work with a forward slash as a path separators. We do not change
that. Rather we make sure that only "normalized" paths enter the depths
of the machinery.
We have to translate backslashes to forward slashes in the prefix and in
command line arguments. Fortunately, all of them are passed through
functions in setup.c.
A macro has_dos_drive_path() is defined that checks whether a path begins
with a drive letter+colon combination. This predicate is always false on
Unix. Another macro is_dir_sep() abstracts that a backslash is also a
directory separator on Windows.
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
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So I was looking at the disgusting size of the git binary, and even with
the debugging removed, and using -Os instead of -O2, the size of the text
section was pretty high. In this day and age I guess almost a megabyte of
text isn't really all that surprising, but it still doesn't exactly make
me think "lean and mean".
With -Os, a surprising amount of text space is wasted on inline functions
that end up just being replicated multiple times, and where performance
really isn't a valid reason to inline them. In particular, the trivial
wrapper functions like "xmalloc()" are used _everywhere_, and making them
inline just duplicates the text (and the string we use to 'die()' on
failure) unnecessarily.
So this just moves them into a "wrapper.c" file, getting rid of a tiny bit
of unnecessary bloat. The following numbers are both with "CFLAGS=-Os":
Before:
[torvalds@woody git]$ size git
text data bss dec hex filename
700460 15160 292184 1007804 f60bc git
After:
[torvalds@woody git]$ size git
text data bss dec hex filename
670540 15160 292184 977884 eebdc git
so it saves almost 30k of text-space (it actually saves more than that
with the default -O2, but I don't think that's necessarily a very relevant
number from a "try to shrink git" standpoint).
It might conceivably have a performance impact, but none of this should be
_that_ performance critical. The real cost is not generally in the wrapper
anyway, but in the code it wraps (ie the cost of "xread()" is all in the
read itself, not in the trivial wrapping of it).
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
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With this change GIT can be compiled and linked using MinGW. Builtins
that only read the repository such as the log family and grep already
work.
Simple stubs are provided for a number of functions that the Windows C
runtime does not offer. They will be completed in later patches.
However, a fix for the snprintf/vsnprintf replacement is applied here
to avoid buffer overflows.
Dmitry Kakurin pointed out that access(..., X_OK) would always fails on
Vista and suggested the -D__USE_MINGW_ACCESS workaround.
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
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This patch adds support to compile and run git on 12 additional platforms.
The platforms are based on UNIX Systems Labs (USL)/Novell/SYS V code base.
The most common are Novell UnixWare 2.X.X, SCO UnixWare 7.X.X,
OpenServer 5.0.X, OpenServer 6.0.X, and SCO pre OSR 5 platforms.
Looking at the the various platform headers, I find:
#if defined(_KERNEL) || !defined(_POSIX_SOURCE) \
&& !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)
which hides u_short and other typedefs that other header files on these
platforms depend on. WIth _XOPEN_SOURCE defined, sources that include
system header files that depend on the typedefs such as u_short cannot be
compiled on these platforms.
__USLC__ indicates UNIX System Labs Corperation (USLC), or a Novell-derived
compiler and/or some SysV based OS's.
__M_UNIX indicates XENIX/SCO UNIX/OpenServer 5.0.7 and prior releases
of the SCO OS's. It is used just like Apple and BSD, both of these
shouldn't have _XOPEN_SOURCE defined.
This is with suggestions and modifications from
Daniel Barkalow, Junio C Hamano, Thomas Harning, and Jeremy Maitin-Shepard.
Signed-off-by: Boyd Lynn Gerber <gerberb@zenez.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Some systems define fopen as a macro based on compiler settings, and
unconditionally redefining it triggers a compilation warning.
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Signed-off-by: Heikki Orsila <heikki.orsila@iki.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Runtime pack access is done in the pack file mtime order since recent
packs are more likely to contain frequently used objects than old packs.
However the --max-pack-size option can produce multiple packs with mtime
in the reversed order as newer objects are always written first.
Let's modify mtime of later pack files (when any) so they appear older
than preceding ones when a repack creates multiple packs.
Signed-off-by: Nicolas Pitre <nico@cam.org>
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* mr/compat-snprintf:
Add compat/snprintf.c for systems that return bogus
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Some systems (namely HPUX and Windows) return -1 when maxsize in snprintf()
and in vsnprintf() is reached. So replace snprintf() and vsnprintf()
functions with our own ones that return correct value upon overflow.
[jc: verified that review comments by J6t have been incorporated, and
tightened the check to verify the resulting buffer contents, suggested
by Wayne Davison]
Signed-off-by: Michal Rokos <michal.rokos@nextsoft.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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It does not allow changing the bit to a non-root user.
This fixes t1301-shared-repo.sh on the platform.
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* bc/fopen:
Add compat/fopen.c which returns NULL on attempt to open directory
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Some systems do not fail as expected when fread et al. are called on
a directory stream. Replace fopen on such systems which will fail
when the supplied path is a directory.
Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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qsort in Windows 2000 (and various other C libraries) is a Quicksort
with the usual O(n^2) worst case. Unfortunately, sorting Git trees
seems to get very close to that worst case quite often:
$ /git/gitbad runstatus
# On branch master
qsort, nmemb = 30842
done, 237838087 comparisons.
This patch adds a simplified version of the merge sort that is glibc's
qsort(3). As a merge sort, this needs a temporary array equal in size
to the array that is to be sorted, but has a worst-case performance of
O(n log n).
The complexity that was removed is:
* Doing direct stores for word-size and -aligned data.
* Falling back to quicksort if the allocation required to perform the
merge sort would likely push the machine into swap.
Even with these simplifications, this seems to outperform the Windows
qsort(3) implementation, even in Windows XP (where it is "fixed" and
doesn't trigger O(n^2) complexity on trees).
[jes: moved into compat/qsort.c, as per Johannes Sixt's suggestion]
[bcd: removed gcc-ism, thanks to Edgar Toernig. renamed make variable
per Junio's comment.]
Signed-off-by: Brian Downing <bdowning@lavos.net>
Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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POSIX.1-2001 has declaration of select(2) in <sys/select.h>, but
in the previous version of SUS, it was declared in <sys/time.h>
(which is already included in git-compat-util.h).
This introduces NO_SYS_SELECT_H macro in the Makefile to be set
on older systems, to skip inclusion of <sys/select.h> that does
not exist on them.
We could check _POSIX_VERSION with 200112L and do this
automatically, but earlier it was reported that the approach
does not work well on some vintage of HP-UX. Other systems may
get _POSIX_VERSION itself wrong. At least for now, this manual
configuration is safer.
Signed-off-by: Robert Schiele <rschiele@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Now the routine is an open-coded loop that avoids an extra
strlen() in the previous implementation, it got a bit too big to
be inlined. Uninlining it makes code footprint smaller but the
result still retains the avoidance of strlen() cost.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Certain codepaths (notably "git log --pretty=format...") use
prefixcmp() extensively, with very short prefixes. In those cases,
calling strlen() is a wasteful operation, so avoid it.
Initial patch by Marco Costalba.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* js/mingw-fallouts:
fetch-pack: Prepare for a side-band demultiplexer in a thread.
rehabilitate some t5302 tests on 32-bit off_t machines
Allow ETC_GITCONFIG to be a relative path.
Introduce git_etc_gitconfig() that encapsulates access of ETC_GITCONFIG.
Allow a relative builtin template directory.
Close files opened by lock_file() before unlinking.
builtin run_command: do not exit with -1.
Move #include <sys/select.h> and <sys/ioctl.h> to git-compat-util.h.
Use is_absolute_path() in sha1_file.c.
Skip t3902-quoted.sh if the file system does not support funny names.
t5302-pack-index: Skip tests of 64-bit offsets if necessary.
t7501-commit.sh: Not all seds understand option -i
t5300-pack-object.sh: Split the big verify-pack test into smaller parts.
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When declaring a structure with a flexible array member, instead
of defaulting to the c99 syntax for non-gnu compilers (which
burned people with older compilers), default to the traditional
and more portable "member[1]; /* more */" syntax.
At the same time, other c99 compilers should be able to take
advantage of the modern syntax to flexible array members without
being gcc. Check __STDC_VERSION__ for that.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* ph/diffopts:
Reorder diff_opt_parse options more logically per topics.
Make the diff_options bitfields be an unsigned with explicit masks.
Use OPT_BIT in builtin-pack-refs
Use OPT_BIT in builtin-for-each-ref
Use OPT_SET_INT and OPT_BIT in builtin-branch
parse-options new features.
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... since all system headers are pulled in via git-compat-util.h
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Apart from the error in the condition (&& should actually be ||), the
construct
#if !defined(A) || !A
leads to a syntax error in the C preprocessor if A is indeed not defined.
Tested-by: David Symonds <dsymonds@gmail.com>
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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options flags:
~~~~~~~~~~~~~
PARSE_OPT_NONEG allow the caller to disallow the negated option to exists.
option types:
~~~~~~~~~~~~
OPTION_BIT: ORs (or NANDs) a mask.
OPTION_SET_INT: force the value to be set to this integer.
OPTION_SET_PTR: force the value to be set to this pointer.
helper:
~~~~~~
HAS_MULTI_BITS (in git-compat-util.h) is a bit-hack to check if an
unsigned integer has more than one bit set, useful to check if conflicting
options have been used.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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strchrnul() was introduced in glibc in April 1999 and included in
glibc-2.1. Checking for that version means the majority of all git
users would get to use the optimized version in glibc. Of the
remaining few some might get to use a slightly slower version
than necessary but probably not slower than what we have today.
Unfortunately, __GLIBC_PREREQ() macro was not available in glibc 2.1.1
which was short lived but already supported strchrnul(). Odd minority
users of that library needs to live with our compatibility inline version.
Rediffed-against-next-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Junio C Hamano
Alex Riesen
Patrick Welche
Johannes Sixt
Janos Laube
Brian Gernhardt
Kjetil Barvik
René Scharfe
Dmitry Potapov
Nanako Shiraishi
Brandon Casey
Robert Shearman
Johannes Sixt
Miklos Vajna
Steffen Prohaska
Linus Torvalds
Boyd Lynn Gerber
Johannes Sixt
Heikki Orsila
Nicolas Pitre
Michal Rokos
Brian Downing
Robert Schiele
Johannes Schindelin
Pierre Habouzit
Andreas Ericsson