Commit Graph

128 Commits

Author SHA1 Message Date
Junio C Hamano
be9f1c0224 Sync with maint
* maint:
  mingw: allow building with an MSYS2 runtime v3.x
2019-03-11 16:16:34 +09:00
Johannes Schindelin
aeb582a983 mingw: allow building with an MSYS2 runtime v3.x
Recently the Git for Windows project started the upgrade process to
a MSYS2 runtime version based on Cygwin v3.x.

This has the very notable consequence that `$(uname -r)` no longer
reports a version starting with "2", but a version with "3".

That breaks our build, as df5218b4c3 (config.mak.uname: support MSys2,
2016-01-13) simply did not expect the version reported by `uname -r` to
depend on the underlying Cygwin version: it expected the reported
version to match the "2" in "MSYS2".

So let's invert that test case to test for *anything else* than a
version starting with "1" (for MSys). That should safeguard us for the
future, even if Cygwin ends up releasing versionsl like 314.272.65536.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-11 11:02:16 +09:00
Johannes Schindelin
6053c04b88 mingw: drop MakeMaker reference
In 20d2a30f8f (Makefile: replace perl/Makefile.PL with simple make
rules, 2017-12-10), Git stopped using MakeMaker. Therefore, that
definition in the MINGW-specific section became useless.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-08 10:42:10 +09:00
Jeff Hostetler
353d3d77f4 trace2: collect Windows-specific process information
Add platform-specific interface to log information about the current
process.

On Windows, this interface is used to indicate whether the git process
is running under a debugger and list names of the process ancestors.

Information for other platforms is left for a future effort.

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-02-22 15:27:59 -08:00
Junio C Hamano
f26493b787 Merge branch 'rs/bash-is-in-coreutils-on-nonstop'
* rs/bash-is-in-coreutils-on-nonstop:
  config.mak.uname: move location of bash on NonStop to CoreUtils
2019-02-13 18:18:43 -08:00
Junio C Hamano
8593e8a618 Merge branch 'js/mingw-host-cpu'
Windows update.

* js/mingw-host-cpu:
  mingw: use a more canonical method to fix the CPU reporting
2019-02-13 18:18:43 -08:00
Junio C Hamano
1db999ce8d Merge branch 'nd/fileno-may-be-macro'
* nd/fileno-may-be-macro:
  git-compat-util: work around fileno(fp) that is a macro
2019-02-13 18:18:41 -08:00
Johannes Schindelin
bb02e7a560 mingw: use a more canonical method to fix the CPU reporting
In `git version --build-options`, we report also the CPU, but in Git for
Windows we actually cross-compile the 32-bit version in a 64-bit Git for
Windows, so we cannot rely on the auto-detected value.

In 3815f64b0d (mingw: fix CPU reporting in `git version
--build-options`, 2019-02-07), we fixed this by a Windows-only
workaround, making use of magic pre-processor constants, which works in
GCC, but most likely not all C compilers.

As pointed out by Eric Sunshine, there is a better way, anyway: to set
the Makefile variable HOST_CPU explicitly for cross-compiled Git. So
let's do that!

This reverts commit 3815f64b0d partially.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-02-13 13:46:58 -08:00
Randall S. Becker
f0ec22bb70 config.mak.uname: move location of bash on NonStop to CoreUtils
The default bash is now officially in /usr/coreutils/bin instead
of in /usr/local/bin. This version of bash is more stable and
recommended for all use as of the J06.22 and L18.02 operating
system revision levels. This new version provides more stability
of test results.

Signed-off-by: Randall S. Becker <rsbecker@nexbridge.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-02-13 12:54:39 -08:00
Duy Nguyen
18a4f6be6b git-compat-util: work around fileno(fp) that is a macro
On various BSD's, fileno(fp) is implemented as a macro that directly
accesses the fields in the FILE * object, which breaks a function that
accepts a "void *fp" parameter and calls fileno(fp) and expect it to
work.

Work it around by adding a compile-time knob FILENO_IS_A_MACRO that
inserts a real helper function in the middle of the callchain.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-02-12 10:01:59 -08:00
Randall S. Becker
243a4c7e27 config.mak.uname: add FREAD_READS_DIRECTORIES for NonStop platform
The NonStop platform needs this configuration item specified as
UnfortunatelyYes so that config directory files are correctly processed.

Signed-off-by: Randall S. Becker <rsbecker@nexbridge.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-02-11 12:58:49 -08:00
Junio C Hamano
fe8e68659d Merge branch 'rj/sparse-flags'
Use of the sparse tool got easier to customize from the command
line to help developers.

* rj/sparse-flags:
  Makefile: improve SPARSE_FLAGS customisation
  config.mak.uname: remove obsolete SPARSE_FLAGS setting
2019-02-06 22:05:30 -08:00
Ramsay Jones
f42615bef1 config.mak.uname: remove obsolete SPARSE_FLAGS setting
An upcoming commit will change the semantics of the SPARSE_FLAGS
variable from an internal to a user only customisation variable.
The MinGW configuration section contains an obsolete setting for
this variable which was used (some years ago) to cater to an error
in the Win32 system header files. Since 'sparse' does not currently
support the MinGW platform, nobody on that platform can be relying
on this setting today. Remove this use of the SPARSE_FLAGS variable.

Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-02-05 10:07:09 -08:00
Junio C Hamano
9f2eba2b90 Merge branch 'rb/hpe'
Portability updates for the HPE NonStop platform.

* rb/hpe:
  compat/regex/regcomp.c: define intptr_t and uintptr_t on NonStop
  git-compat-util.h: add FLOSS headers for HPE NonStop
  config.mak.uname: support for modern HPE NonStop config.
  transport-helper: drop read/write errno checks
  transport-helper: use xread instead of read
2019-01-18 13:49:54 -08:00
Junio C Hamano
25d90d1cb7 Merge branch 'tb/use-common-win32-pathfuncs-on-cygwin'
Cygwin update.

* tb/use-common-win32-pathfuncs-on-cygwin:
  git clone <url> C:\cygwin\home\USER\repo' is working (again)
2019-01-14 15:29:32 -08:00
Junio C Hamano
0890c8aa0d Merge branch 'cb/openbsd-allows-reading-directory'
BSD port update.

* cb/openbsd-allows-reading-directory:
  config.mak.uname: OpenBSD uses BSD semantics with fread for directories
2019-01-14 15:29:30 -08:00
Randall S. Becker
71fb089c9f config.mak.uname: support for modern HPE NonStop config.
A number of configuration options are not automatically detected by
configure mechanisms, including the location of Perl and Python.

There was a problem at a specific set of operating system versions
that caused getopt to have compile errors. Account for this by
providing emulation defines for those versions.

Signed-off-by: Randall S. Becker <rsbecker@nexbridge.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-01-03 14:16:20 -08:00
Torsten Bögershausen
1cadad6f65 git clone <url> C:\cygwin\home\USER\repo' is working (again)
A regression for cygwin users was introduced with commit 05b458c,
 "real_path: resolve symlinks by hand".

In the the commit message we read:
  The current implementation of real_path uses chdir() in order to resolve
    symlinks.  Unfortunately this isn't thread-safe as chdir() affects a
      process as a whole...

The old (and non-thread-save) OS calls chdir()/pwd() had been
replaced by a string operation.
The cygwin layer "knows" that "C:\cygwin" is an absolute path,
but the new string operation does not.

"git clone <url> C:\cygwin\home\USER\repo" fails like this:
fatal: Invalid path '/home/USER/repo/C:\cygwin\home\USER\repo'

The solution is to implement has_dos_drive_prefix(), skip_dos_drive_prefix()
is_dir_sep(), offset_1st_component() and convert_slashes() for cygwin
in the same way as it is done in 'Git for Windows' in compat/mingw.[ch]

Extract the needed code into compat/win32/path-utils.[ch] and use it
for cygwin as well.

Reported-by: Steven Penny <svnpenn@gmail.com>
Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-12-26 15:26:17 -08:00
Carlo Marcelo Arenas Belón
4e3ecbd439 config.mak.uname: OpenBSD uses BSD semantics with fread for directories
this "fixes" test 23 (proper error on directory "files") from t1308

MirBSD likely also affected but this was only tested with OpenBSD and
therefore this specific change only affects that platform

the optional 'configure' sets this automatically (tested with 6.1 to 6.4)
but considering this is a legacy feature it is likely that it affected
all old versions and is probably what most users had been using as a
workaround

Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-12-03 10:30:21 +09:00
Junio C Hamano
fa2f2f085e Merge branch 'jk/curl-ldflags'
The way -lcurl library gets linked has been simplified by taking
advantage of the fact that we can just ask curl-config command how.

* jk/curl-ldflags:
  build: link with curl-defined linker flags
2018-11-18 18:23:53 +09:00
James Knight
23c4bbe28e build: link with curl-defined linker flags
Adjusting the build process to rely more on curl-config to populate
linker flags instead of manually populating flags based off detected
features.

Originally, a configure-invoked build would check for SSL-support in the
target curl library. If enabled, NEEDS_SSL_WITH_CURL would be set and
used in the Makefile to append additional libraries to link against. As
for systems building solely with make, the defines NEEDS_IDN_WITH_CURL
and NEEDS_SSL_WITH_CURL could be set to indirectly enable respective
linker flags. Since both configure.ac and Makefile already rely on
curl-config utility to provide curl-related build information, adjusting
the respective assets to populate required linker flags using the
utility (unless explicitly configured).

Signed-off-by: James Knight <james.d.knight@live.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-05 10:19:25 +09:00
Karsten Blees
d7e8c87421 mingw: implement nanosecond-precision file times
We no longer use any of MSVCRT's stat-functions, so there's no need to
stick to a CRT-compatible 'struct stat' either.

Define and use our own POSIX-2013-compatible 'struct stat' with nanosecond-
precision file times.

Note: This can cause performance issues when using Git variants with
different file time resolutions, as the timestamps are stored in the Git
index: after updating the index with a Git variant that uses
second-precision file times, a nanosecond-aware Git will think that
pretty much every single file listed in the index is out of date.

Signed-off-by: Karsten Blees <blees@dcon.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-24 13:18:14 +09:00
Johannes Schindelin
2939a1f703 mingw: bump the minimum Windows version to Vista
Quite some time ago, a last plea to the XP users out there who want to
see Windows XP support in Git for Windows, asking them to get engaged
and help, vanished into the depths of the universe.

We tried for a long time to play nice with the last remaining XP users
who somehow manage to build Git from source, but a recent update of
mingw-w64 (7.0.0.5233.e0c09544 -> 7.0.0.5245.edf66197) finally dropped
the last sign of XP support, and Git for Windows' SDK is no longer able
to build core Git's `master` branch as a consequence. (Git for Windows'
`master` branch already bumped the minimum Windows version to Vista a
while ago, so it is fine.)

It is time to require Windows Vista or later to build Git from source.
This, incidentally, lets us use quite a few nice new APIs.

It also means that we no longer need the inet_pton() and inet_ntop()
emulation, which is nice.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-04 05:39:56 -07:00
Junio C Hamano
b571c25e33 Merge branch 'es/freebsd-iconv-portability'
Build fix.

* es/freebsd-iconv-portability:
  config.mak.uname: resolve FreeBSD iconv-related compilation warning
2018-09-04 14:31:39 -07:00
Eric Sunshine
6c6ce21baa config.mak.uname: resolve FreeBSD iconv-related compilation warning
OLD_ICONV has long been needed by FreeBSD so config.mak.uname defines
it unconditionally. However, recent versions do not need it, and its
presence results in compilation warnings. Resolve this issue by defining
OLD_ICONV only for older FreeBSD versions.

Specifically, revision r281550[1], which is part of FreeBSD 11, removed
the need for OLD_ICONV, and r282275[2] back-ported that change to 10.2.
Versions prior to 10.2 do need it.

[1] b0813ee288
[2] b709ec868a

[es: commit message; tweak version check to distinguish 10.x versions]

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-31 12:05:24 -07:00
Johannes Schindelin
b4d991d1a2 mingw: define WIN32 explicitly
This helps VS Code's intellisense to figure out that we want to include
windows.h, and that we want to define the minimum target Windows version
as Windows Vista/2008R2.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-30 13:14:39 -07:00
Junio C Hamano
30b015bffe Merge branch 'nd/repack-keep-pack'
"git gc" in a large repository takes a lot of time as it considers
to repack all objects into one pack by default.  The command has
been taught to pretend as if the largest existing packfile is
marked with ".keep" so that it is left untouched while objects in
other packs and loose ones are repacked.

* nd/repack-keep-pack:
  pack-objects: show some progress when counting kept objects
  gc --auto: exclude base pack if not enough mem to "repack -ad"
  gc: handle a corner case in gc.bigPackThreshold
  gc: add gc.bigPackThreshold config
  gc: add --keep-largest-pack option
  repack: add --keep-pack option
  t7700: have closing quote of a test at the beginning of line
2018-05-23 14:38:14 +09:00
Nguyễn Thái Ngọc Duy
9806f5a7bf gc --auto: exclude base pack if not enough mem to "repack -ad"
pack-objects could be a big memory hog especially on large repos,
everybody knows that. The suggestion to stick a .keep file on the
giant base pack to avoid this problem is also known for a long time.

Recent patches add an option to do just this, but it has to be either
configured or activated manually. This patch lets `git gc --auto`
activate this mode automatically when it thinks `repack -ad` will use
a lot of memory and start affecting the system due to swapping or
flushing OS cache.

gc --auto decides to do this based on an estimation of pack-objects
memory usage, which is quite accurate at least for the heap part, and
whether that fits in half of system memory (the assumption here is for
desktop environment where there are many other applications running).

This mechanism only kicks in if gc.bigBasePackThreshold is not configured.
If it is, it is assumed that the user already knows what they want.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-16 13:52:29 +09:00
Johannes Schindelin
86e254584b mingw/msvc: use the new-style RUNTIME_PREFIX helper
This change also allows us to stop overriding argv[0] with the absolute
path of the executable, allowing us to preserve e.g. the case of the
executable's file name.

This fixes https://github.com/git-for-windows/git/issues/1496 partially.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-11 18:10:28 +09:00
Dan Jacques
226c0ddd0d exec_cmd: RUNTIME_PREFIX on some POSIX systems
Enable Git to resolve its own binary location using a variety of
OS-specific and generic methods, including:

- procfs via "/proc/self/exe" (Linux)
- _NSGetExecutablePath (Darwin)
- KERN_PROC_PATHNAME sysctl on BSDs.
- argv0, if absolute (all, including Windows).

This is used to enable RUNTIME_PREFIX support for non-Windows systems,
notably Linux and Darwin. When configured with RUNTIME_PREFIX, Git will
do a best-effort resolution of its executable path and automatically use
this as its "exec_path" for relative helper and data lookups, unless
explicitly overridden.

Small incidental formatting cleanup of "exec_cmd.c".

Signed-off-by: Dan Jacques <dnj@google.com>
Thanks-to: Robbie Iannucci <iannucci@google.com>
Thanks-to: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-11 18:10:28 +09:00
Ramsay Jones
6bc8606be3 config.mak.uname: remove SPARSE_FLAGS setting for cygwin
Since commit f66450ae9 ("cygwin: Remove the Win32 l/stat() implementation",
2013-06-22), the cygwin build has not used the WIN32 API/header files.
This means that the '-isystem /usr/include/w32api' option to sparse is
no longer necessary (to allow sparse to find the WIN32 header files).
In addition, the '-Wno-one-bit-signed-bitfield' option can be removed,
since the warning suppressed by that option was only provoked by a WIN32
header file.

Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-12 12:19:18 -08:00
Michael Haggerty
5b633610ec packed_ref_cache: keep the packed-refs file mmapped if possible
Keep a copy of the `packed-refs` file contents in memory for as long
as a `packed_ref_cache` object is in use:

* If the system allows it, keep the `packed-refs` file mmapped.

* If not (either because the system doesn't support `mmap()` at all,
  or because a file that is currently mmapped cannot be replaced via
  `rename()`), then make a copy of the file's contents in
  heap-allocated space, and keep that around instead.

We base the choice of behavior on a new build-time switch,
`MMAP_PREVENTS_DELETE`. By default, this switch is set for Windows
variants.

After this commit, `MMAP_NONE` and `MMAP_TEMPORARY` are still handled
identically. But the next commit will introduce a difference.

This whole change is still pointless, because we only read the
`packed-refs` file contents immediately after instantiating the
`packed_ref_cache`. But that will soon change.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-25 18:02:45 +09:00
Ramsay Jones
a5956d6a56 config.mak.uname: set FREAD_READS_DIRECTORIES for cygwin
Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-21 11:58:06 -07:00
Junio C Hamano
33400c0e96 Merge branch 'tb/push-to-cygwin-unc-path'
On Cygwin, similar to Windows, "git push //server/share/repository"
ought to mean a repository on a network share that can be accessed
locally, but this did not work correctly due to stripping the double
slashes at the beginning.

This may need to be heavily tested before it gets unleashed to the
wild, as the change is at a fairly low-level code and would affect
not just the code to decide if the push destination is local.  There
may be unexpected fallouts in the path normalization.

* tb/push-to-cygwin-unc-path:
  cygwin: allow pushing to UNC paths
2017-07-18 12:48:09 -07:00
Torsten Bögershausen
496f256989 cygwin: allow pushing to UNC paths
cygwin can use an UNC path like //server/share/repo

 $ cd //server/share/dir
 $ mkdir test
 $ cd test
 $ git init --bare

 However, when we try to push from a local Git repository to this repo,
 there is a problem: Git converts the leading "//" into a single "/".

 As cygwin handles an UNC path so well, Git can support them better:

 - Introduce cygwin_offset_1st_component() which keeps the leading "//",
   similar to what Git for Windows does.

 - Move CYGWIN out of the POSIX in the tests for path normalization in t0060

Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-05 14:01:03 -07:00
Junio C Hamano
ae7e4d4fed Merge branch 'ab/pcre-v2'
Update "perl-compatible regular expression" support to enable JIT
and also allow linking with the newer PCRE v2 library.

* ab/pcre-v2:
  grep: add support for PCRE v2
  grep: un-break building with PCRE >= 8.32 without --enable-jit
  grep: un-break building with PCRE < 8.20
  grep: un-break building with PCRE < 8.32
  grep: add support for the PCRE v1 JIT API
  log: add -P as a synonym for --perl-regexp
  grep: skip pthreads overhead when using one thread
  grep: don't redundantly compile throwaway patterns under threading
2017-06-19 12:38:43 -07:00
Junio C Hamano
b9a7d55d93 Merge branch 'nd/fopen-errors'
We often try to open a file for reading whose existence is
optional, and silently ignore errors from open/fopen; report such
errors if they are not due to missing files.

* nd/fopen-errors:
  mingw_fopen: report ENOENT for invalid file names
  mingw: verify that paths are not mistaken for remote nicknames
  log: fix memory leak in open_next_file()
  rerere.c: move error_errno() closer to the source system call
  print errno when reporting a system call error
  wrapper.c: make warn_on_inaccessible() static
  wrapper.c: add and use fopen_or_warn()
  wrapper.c: add and use warn_on_fopen_errors()
  config.mak.uname: set FREAD_READS_DIRECTORIES for Darwin, too
  config.mak.uname: set FREAD_READS_DIRECTORIES for Linux and FreeBSD
  clone: use xfopen() instead of fopen()
  use xfopen() in more places
  git_fopen: fix a sparse 'not declared' warning
2017-06-13 13:47:09 -07:00
Ævar Arnfjörð Bjarmason
fb95e2e38d grep: un-break building with PCRE >= 8.32 without --enable-jit
Amend my change earlier in this series ("grep: add support for the
PCRE v1 JIT API", 2017-04-11) to un-break the build on PCRE v1
versions later than 8.31 compiled without --enable-jit.

As explained in that change and a later compatibility change in this
series ("grep: un-break building with PCRE < 8.32", 2017-05-10) the
pcre_jit_exec() function is a faster path to execute the JIT.

Unfortunately there's no compatibility stub for that function compiled
into the library if pcre_config(PCRE_CONFIG_JIT, &ret) would return 0,
and no macro that can be used to check for it, so the only portable
option to support builds without --enable-jit is via a new
NO_LIBPCRE1_JIT=UnfortunatelyYes Makefile option[1].

Another option would be to make the JIT opt-in via
USE_LIBPCRE1_JIT=YesPlease, after all it's not a default option of
PCRE v1.

I think it makes more sense to make it opt-out since even though it's
not a default option, most packagers of PCRE seem to turn it on by
default, with the notable exception of the MinGW package.

Make the MinGW platform work by default by changing the build defaults
to turn on NO_LIBPCRE1_JIT=UnfortunatelyYes. It is the only platform
that turns on USE_LIBPCRE=YesPlease by default, see commit
df5218b4c3 ("config.mak.uname: support MSys2", 2016-01-13) for that
change.

1. "How do I support pcre1 JIT on all
   versions?"  (https://lists.exim.org/lurker/thread/20170601.103148.10253788.en.html)

2. https://github.com/Alexpux/MINGW-packages/blob/master/mingw-w64-pcre/PKGBUILD
   (referenced from "Re: PCRE v2 compile error, was Re: What's cooking
   in git.git (May 2017, #01; Mon, 1)";
   <alpine.DEB.2.20.1705021756530.3480@virtualbox>)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02 08:29:05 +09:00
Junio C Hamano
8e178ec4d0 config.mak.uname: set FREAD_READS_DIRECTORIES for Darwin, too
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-26 12:33:55 +09:00
Nguyễn Thái Ngọc Duy
e2d90fd1c3 config.mak.uname: set FREAD_READS_DIRECTORIES for Linux and FreeBSD
This variable is added [1] with the assumption that on a sane system,
fopen(<dir>, "r") should return NULL. Linux and FreeBSD do not meet this
expectation while at least Windows and AIX do. Let's make sure they
behave the same way.

I only tested one version on Linux (4.7.0 with glibc 2.22) and
FreeBSD (11.0) but since GNU/kFreeBSD is fbsd kernel with gnu userspace,
I'm pretty sure it shares the same problem.

[1] cba22528fa (Add compat/fopen.c which returns NULL on attempt to open
    directory - 2008-02-08)

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-26 12:33:55 +09:00
Ævar Arnfjörð Bjarmason
0e6d899fee config.mak.uname: set NO_REGEX=NeedsStartEnd on AIX
Set the NO_REGEX=NeedsStartEnd Makefile flag by default on AIX.

Since commit 2f8952250a ("regex: add regexec_buf() that can work on a
non NUL-terminated string", 2016-09-21) git has errored out at
compile-time if the regular expression library doesn't support
REG_STARTEND.

While looking through Google search results for the use of NO_REGEX I
found a Chef recipe that set this on AIX[1], looking through the
documentation for the latest version of AIX (7.2, released October
2015) shows that its regexec() doesn't have REG_STARTEND.

1. https://github.com/chef/omnibus-software/commit/e247e36761#diff-3df898345d670979b74acc0bf71d8c47
2. https://www.ibm.com/support/knowledgecenter/ssw_aix_72/com.ibm.aix.basetrf2/regexec.htm

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-04 16:10:51 +09:00
Junio C Hamano
f56a4390ee Merge branch 'rj/remove-unused-mktemp' into maint
Code cleanup.

* rj/remove-unused-mktemp:
  wrapper.c: remove unused gitmkstemps() function
  wrapper.c: remove unused git_mkstemp() function
2017-03-21 15:03:24 -07:00
Junio C Hamano
890d76504c Merge branch 'jh/mingw-openssl-sha1' into maint
Windows port wants to use OpenSSL's implementation of SHA-1
routines, so let them.

* jh/mingw-openssl-sha1:
  mingw: use OpenSSL's SHA-1 routines
2017-03-16 13:56:41 -07:00
Junio C Hamano
033328a5dc Merge branch 'jh/mingw-openssl-sha1'
Windows port wants to use OpenSSL's implementation of SHA-1
routines, so let them.

* jh/mingw-openssl-sha1:
  mingw: use OpenSSL's SHA-1 routines
2017-03-12 23:21:33 -07:00
Ramsay Jones
b2d593a779 wrapper.c: remove unused gitmkstemps() function
The last call to the mkstemps() function was removed in commit 659488326
("wrapper.c: delete dead function git_mkstemps()", 22-04-2016). In order
to support platforms without mkstemps(), this functionality was provided,
along with a Makefile build variable (NO_MKSTEMPS), by the gitmkstemps()
function. Remove the dead code, along with the defunct build machinery.

Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-28 11:54:21 -08:00
Jeff Hostetler
2cfc70f0de mingw: use OpenSSL's SHA-1 routines
Use OpenSSL's SHA-1 routines rather than builtin block-sha1 routines.
This improves performance on SHA1 operations on Intel processors.

OpenSSL 1.0.2 has made considerable performance improvements and
support the Intel hardware acceleration features.  See:
https://software.intel.com/en-us/articles/improving-openssl-performance
https://software.intel.com/en-us/articles/intel-sha-extensions

To test this I added/staged a single file in a gigantic
repository having a 450MB index file.  The code in read-cache.c
verifies the header SHA as it reads the index and computes a new
header SHA as it writes out the new index.  Therefore, in this test
the SHA code must process 900MB of data.  Testing was done on an
Intel I7-4770 CPU @ 3.40GHz (Intel64, Family 6, Model 60) CPU.

The block-sha1 version averaged 5.27 seconds.
The OpenSSL    version averaged 4.50 seconds.

================================================================

$ echo xxx >> project.mk
$ time /e/blk_sha/bin/git.exe add project.mk

real    0m5.207s
user    0m0.000s
sys     0m0.250s

$ echo xxx >> project.mk
$ time /e/blk_sha/bin/git.exe add project.mk

real    0m5.362s
user    0m0.015s
sys     0m0.234s

$ echo xxx >> project.mk
$ time /e/blk_sha/bin/git.exe add project.mk

real    0m5.300s
user    0m0.016s
sys     0m0.250s

$ echo xxx >> project.mk
$ time /e/blk_sha/bin/git.exe add project.mk

real    0m5.216s
user    0m0.000s
sys     0m0.250s

================================================================
$ echo xxx >> project.mk
$ time /e/openssl/bin/git.exe add project.mk

real    0m4.431s
user    0m0.000s
sys     0m0.250s

$ echo xxx >> project.mk
$ time /e/openssl/bin/git.exe add project.mk

real    0m4.478s
user    0m0.000s
sys     0m0.265s

$ echo xxx >> project.mk
$ time /e/openssl/bin/git.exe add project.mk

real    0m4.690s
user    0m0.000s
sys     0m0.250s

$ echo xxx >> project.mk
$ time /e/openssl/bin/git.exe add project.mk

real    0m4.420s
user    0m0.000s
sys     0m0.234s

================================================================

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-09 15:40:06 -08:00
Jeff King
1f7c926132 xdiff: drop XDL_FAST_HASH
The xdiff code hashes every line of both sides of a diff,
and then compares those hashes to find duplicates. The
overall performance depends both on how fast we can compute
the hashes, but also on how many hash collisions we see.

The idea of XDL_FAST_HASH is to speed up the hash
computation. But the generated hashes have worse collision
behavior. This means that in some cases it speeds diffs up
(running "git log -p" on git.git improves by ~8% with it),
but in others it can slow things down. One pathological case
saw over a 100x slowdown[1].

There may be a better hash function that covers both
properties, but in the meantime we are better off with the
original hash. It's slightly slower in the common case, but
it has fewer surprising pathological cases.

[1] http://public-inbox.org/git/20141222041944.GA441@peff.net/

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-06 13:27:11 -08:00
Junio C Hamano
43a42aa403 Merge branch 'ew/build-time-pager-tweaks'
The build procedure learned PAGER_ENV knob that lists what default
environment variable settings to export for popular pagers.  This
mechanism is used to tweak the default settings to MORE on FreeBSD.

* ew/build-time-pager-tweaks:
  pager: move pager-specific setup into the build
2016-08-08 14:48:44 -07:00
Eric Wong
995bc22d7f pager: move pager-specific setup into the build
Allowing PAGER_ENV to be set at build-time allows us to move
pager-specific knowledge out of our build.  This allows us to
set a better default for FreeBSD more(1), which pretends not to
understand ANSI color escapes if the MORE environment variable
is left empty, but accepts the same variables as less(1)

Originally-from:
 https://public-inbox.org/git/xmqq61piw4yf.fsf@gitster.dls.corp.google.com/

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-08-04 13:51:02 -07:00
Junio C Hamano
36f99a40a8 Merge branch 'ew/find-perl-on-freebsd-in-local'
Recent FreeBSD stopped making perl available at /usr/bin/perl;
switch the default the built-in path to /usr/local/bin/perl on not
too ancient FreeBSD releases.

* ew/find-perl-on-freebsd-in-local:
  config.mak.uname: correct perl path on FreeBSD
2016-07-28 10:34:44 -07:00