fncachestore: copy dh directory before the manifest
Before this patch, the copy order on clone was:
requires
00changelog.i
store\data
store\00manifest.d
store\00manifest.i
store\00changelog.d
store\00changelog.i
store\dh
store\fncache
Which provides a theoretical non-zero probability of a race during clone where
a very early reader might see a repository with missing revlog files if it sees
00changelog.i before all files inside dh have been copied.
The dh directory is similar to the data directory -- just for files with long
names (which are hashed). The manifest refers to files in data *and* dh, so dh
should be copied before the manifest.
This patch improves the copy order to:
requires
00changelog.i
store\data
store\dh
store\fncache
store\00manifest.d
store\00manifest.i
store\00changelog.d
store\00changelog.i
I'm putting fncache to before the manifest while I'm at it, since fncache
provides a mechanism to enumerate all repository files without visiting the
manifest revisions. fncache depends only on data and dh.
Note that data must be copied first, since copying data triggers the creation
of the repository write lock in the destination repo (see hg.clone).
# If you want to change PREFIX, do not just edit it below. The changed
# value wont get passed on to recursive make calls. You should instead
# override the variable on the command like:
#
# % make PREFIX=/opt/ install
PREFIX=/usr/local
export PREFIX
PYTHON=python
PURE=
PYFILES:=$(shell find mercurial hgext doc -name '*.py')
DOCFILES=mercurial/help/*.txt
help:
@echo 'Commonly used make targets:'
@echo ' all - build program and documentation'
@echo ' install - install program and man pages to PREFIX ($(PREFIX))'
@echo ' install-home - install with setup.py install --home=HOME ($(HOME))'
@echo ' local - build for inplace usage'
@echo ' tests - run all tests in the automatic test suite'
@echo ' test-foo - run only specified tests (e.g. test-merge1)'
@echo ' dist - run all tests and create a source tarball in dist/'
@echo ' clean - remove files created by other targets'
@echo ' (except installed files or dist source tarball)'
@echo ' update-pot - update i18n/hg.pot'
@echo
@echo 'Example for a system-wide installation under /usr/local:'
@echo ' make all && su -c "make install" && hg version'
@echo
@echo 'Example for a local installation (usable in this directory):'
@echo ' make local && ./hg version'
all: build doc
local:
$(PYTHON) setup.py $(PURE) build_py -c -d . build_ext -i build_mo
$(PYTHON) hg version
build:
$(PYTHON) setup.py $(PURE) build
doc:
$(MAKE) -C doc
clean:
-$(PYTHON) setup.py clean --all # ignore errors from this command
find . \( -name '*.py[cdo]' -o -name '*.so' \) -exec rm -f '{}' ';'
rm -f MANIFEST mercurial/__version__.py tests/*.err
rm -rf build mercurial/locale
$(MAKE) -C doc clean
install: install-bin install-doc
install-bin: build
$(PYTHON) setup.py $(PURE) install --root="$(DESTDIR)/" --prefix="$(PREFIX)" --force
install-doc: doc
cd doc && $(MAKE) $(MFLAGS) install
install-home: install-home-bin install-home-doc
install-home-bin: build
$(PYTHON) setup.py $(PURE) install --home="$(HOME)" --force
install-home-doc: doc
cd doc && $(MAKE) $(MFLAGS) PREFIX="$(HOME)" install
MANIFEST-doc:
$(MAKE) -C doc MANIFEST
MANIFEST: MANIFEST-doc
hg manifest > MANIFEST
echo mercurial/__version__.py >> MANIFEST
cat doc/MANIFEST >> MANIFEST
dist: tests dist-notests
dist-notests: doc MANIFEST
TAR_OPTIONS="--owner=root --group=root --mode=u+w,go-w,a+rX-s" $(PYTHON) setup.py -q sdist
tests:
cd tests && $(PYTHON) run-tests.py $(TESTFLAGS)
test-%:
cd tests && $(PYTHON) run-tests.py $(TESTFLAGS) $@
update-pot: i18n/hg.pot
i18n/hg.pot: $(PYFILES) $(DOCFILES)
$(PYTHON) i18n/hggettext mercurial/commands.py \
hgext/*.py hgext/*/__init__.py mercurial/revset.py \
$(DOCFILES) > i18n/hg.pot
# All strings marked for translation in Mercurial contain
# ASCII characters only. But some files contain string
# literals like this '\037\213'. xgettext thinks it has to
# parse them even though they are not marked for translation.
# Extracting with an explicit encoding of ISO-8859-1 will make
# xgettext "parse" and ignore them.
echo $(PYFILES) | xargs \
xgettext --package-name "Mercurial" \
--msgid-bugs-address "<mercurial-devel@selenic.com>" \
--copyright-holder "Matt Mackall <mpm@selenic.com> and others" \
--from-code ISO-8859-1 --join --sort-by-file --add-comments=i18n: \
-d hg -p i18n -o hg.pot
$(PYTHON) i18n/posplit i18n/hg.pot
%.po: i18n/hg.pot
msgmerge --no-location --update $@ $^
.PHONY: help all local build doc clean install install-bin install-doc \
install-home install-home-bin install-home-doc dist dist-notests tests \
update-pot