Mercurial > hg
view contrib/mercurial.spec @ 30446:b324b4e431e5
posix: give checkexec a fast path; keep the check files and test read only
Before, Mercurial would create a new temporary file every time, stat it, change
its exec mode, stat it again, and delete it. Most of this dance was done to
handle the rare and not-so-essential case of VFAT mounts on unix. The cost of
that was paid by the much more common and important case of using normal file
systems.
Instead, try to create and preserve .hg/cache/checkisexec and
.hg/cache/checknoexec with and without exec flag set. If the files exist and
have correct exec flags set, we can conclude that that file system supports the
exec flag. Best case, the whole exec check can thus be done with two stat
calls. Worst case, we delete the wrong files and check as usual. That will be
because temporary loss of exec bit or on file systems without support for the
exec bit. In that case we check as we did before, with the additional overhead
of one extra stat call.
It is possible that this different test algorithm in some cases on odd file
systems will give different behaviour. Again, I think it will be rare and
special cases and I think it is worth the risk.
test-clone.t happens to show the situation where checkisexec is left behind
from the old style check, while checknoexec only will be created next time a
exec check will be performed.
author | Mads Kiilerich <madski@unity3d.com> |
---|---|
date | Wed, 14 Jan 2015 01:15:26 +0100 |
parents | b927fe8bf0b9 |
children | feb910d2f59b |
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%global emacs_lispdir %{_datadir}/emacs/site-lisp %define withpython %{nil} %if "%{?withpython}" %global pythonver %{withpython} %global pythonname Python-%{withpython} %global docutilsname docutils-0.12 %global docutilsmd5 4622263b62c5c771c03502afa3157768 %global pythonhg python-hg %global hgpyprefix /opt/%{pythonhg} # byte compilation will fail on some some Python /test/ files %global _python_bytecompile_errors_terminate_build 0 %else %global pythonver %(python -c 'import sys;print ".".join(map(str, sys.version_info[:2]))') %endif Summary: A fast, lightweight Source Control Management system Name: mercurial Version: snapshot Release: 0 License: GPLv2+ Group: Development/Tools URL: https://mercurial-scm.org/ Source0: %{name}-%{version}-%{release}.tar.gz %if "%{?withpython}" Source1: %{pythonname}.tgz Source2: %{docutilsname}.tar.gz %endif BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root BuildRequires: make, gcc, gettext %if "%{?withpython}" BuildRequires: readline-devel, openssl-devel, ncurses-devel, zlib-devel, bzip2-devel %else BuildRequires: python >= 2.6, python-devel, python-docutils >= 0.5 Requires: python >= 2.6 %endif # The hgk extension uses the wish tcl interpreter, but we don't enforce it #Requires: tk %description Mercurial is a fast, lightweight source control management system designed for efficient handling of very large distributed projects. %prep %if "%{?withpython}" %setup -q -n mercurial-%{version}-%{release} -a1 -a2 # despite the comments in cgi.py, we do this to prevent rpmdeps from picking /usr/local/bin/python up sed -i '1c#! /usr/bin/env python' %{pythonname}/Lib/cgi.py %else %setup -q -n mercurial-%{version}-%{release} %endif %build %if "%{?withpython}" PYPATH=$PWD/%{pythonname} cd $PYPATH ./configure --prefix=%{hgpyprefix} make all %{?_smp_mflags} cd - cd %{docutilsname} LD_LIBRARY_PATH=$PYPATH $PYPATH/python setup.py build cd - # verify Python environment LD_LIBRARY_PATH=$PYPATH PYTHONPATH=$PWD/%{docutilsname} $PYPATH/python -c 'import sys, zlib, bz2, ssl, curses, readline' # set environment for make export PATH=$PYPATH:$PATH export LD_LIBRARY_PATH=$PYPATH export CFLAGS="-L $PYPATH" export PYTHONPATH=$PWD/%{docutilsname} %endif make all %install rm -rf $RPM_BUILD_ROOT %if "%{?withpython}" PYPATH=$PWD/%{pythonname} cd $PYPATH make install DESTDIR=$RPM_BUILD_ROOT # these .a are not necessary and they are readonly and strip fails - kill them! rm -f %{buildroot}%{hgpyprefix}/lib/{,python2.*/config}/libpython2.*.a cd - cd %{docutilsname} LD_LIBRARY_PATH=$PYPATH $PYPATH/python setup.py install --root="$RPM_BUILD_ROOT" cd - PATH=$PYPATH:$PATH LD_LIBRARY_PATH=$PYPATH make install DESTDIR=$RPM_BUILD_ROOT PREFIX=%{hgpyprefix} MANDIR=%{_mandir} mkdir -p $RPM_BUILD_ROOT%{_bindir} ( cd $RPM_BUILD_ROOT%{_bindir}/ && ln -s ../..%{hgpyprefix}/bin/hg . ) ( cd $RPM_BUILD_ROOT%{_bindir}/ && ln -s ../..%{hgpyprefix}/bin/python2.? %{pythonhg} ) %else make install DESTDIR=$RPM_BUILD_ROOT PREFIX=%{_prefix} MANDIR=%{_mandir} %endif install -m 755 contrib/hgk $RPM_BUILD_ROOT%{_bindir}/ install -m 755 contrib/hg-ssh $RPM_BUILD_ROOT%{_bindir}/ bash_completion_dir=$RPM_BUILD_ROOT%{_sysconfdir}/bash_completion.d mkdir -p $bash_completion_dir install -m 644 contrib/bash_completion $bash_completion_dir/mercurial.sh zsh_completion_dir=$RPM_BUILD_ROOT%{_datadir}/zsh/site-functions mkdir -p $zsh_completion_dir install -m 644 contrib/zsh_completion $zsh_completion_dir/_mercurial mkdir -p $RPM_BUILD_ROOT%{emacs_lispdir} install -m 644 contrib/mercurial.el $RPM_BUILD_ROOT%{emacs_lispdir}/ install -m 644 contrib/mq.el $RPM_BUILD_ROOT%{emacs_lispdir}/ mkdir -p $RPM_BUILD_ROOT/%{_sysconfdir}/mercurial/hgrc.d %clean rm -rf $RPM_BUILD_ROOT %files %defattr(-,root,root,-) %doc CONTRIBUTORS COPYING doc/README doc/hg*.txt doc/hg*.html *.cgi contrib/*.fcgi %doc %attr(644,root,root) %{_mandir}/man?/hg* %doc %attr(644,root,root) contrib/*.svg %dir %{_datadir}/zsh/ %dir %{_datadir}/zsh/site-functions/ %{_datadir}/zsh/site-functions/_mercurial %dir %{_datadir}/emacs/site-lisp/ %{_datadir}/emacs/site-lisp/mercurial.el %{_datadir}/emacs/site-lisp/mq.el %{_bindir}/hg %{_bindir}/hgk %{_bindir}/hg-ssh %dir %{_sysconfdir}/bash_completion.d/ %config(noreplace) %{_sysconfdir}/bash_completion.d/mercurial.sh %dir %{_sysconfdir}/mercurial %dir %{_sysconfdir}/mercurial/hgrc.d %if "%{?withpython}" %{_bindir}/%{pythonhg} %{hgpyprefix} %else %if "%{?pythonver}" != "2.4" %{_libdir}/python%{pythonver}/site-packages/%{name}-*-py%{pythonver}.egg-info %endif %{_libdir}/python%{pythonver}/site-packages/%{name} %{_libdir}/python%{pythonver}/site-packages/hgext %{_libdir}/python%{pythonver}/site-packages/hgext3rd %endif