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hg: obtain lock when creating share from pooled repo (issue5104)...
hg: obtain lock when creating share from pooled repo (issue5104) There are race conditions between clients performing a shared clone to pooled storage: 1) Clients race to create the new shared repo in the pool directory 2) 1 client is seeding the repo in the pool directory and another goes to share it before it is fully cloned We prevent these race conditions by obtaining a lock in the pool directory that is derived from the name of the repo we will be accessing. To test this, a simple generic "lockdelay" extension has been added. The extension inserts an optional, configurable delay before or after lock acquisition. In the test, we delay 2 seconds after lock acquisition in the first process and 1 second before lock acquisition in the 2nd process. This means the first process has 1s to obtain the lock. There is a race condition here. If we encounter it in the wild, we could change the dummy extension to wait on the lock file to appear instead of relying on timing. But that's more complicated. Let's see what happens first.
Martin Geisler - - Load All Authors

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r28289:d493d647 3.7.2 stable
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Martin Geisler
doc: update README with links to Docutils
 r9172 Mercurial's documentation is kept in reStructuredText format, which is
a simple plain text format that's easy to read and edit:
jake@edge2.net
adding doc directory and files
 r177
Martin Geisler
doc: update README with links to Docutils
 r9172 http://docutils.sourceforge.net/rst.html
jake@edge2.net
adding doc directory and files
 r177
Martin Geisler
doc: update README with links to Docutils
 r9172 It's also convertible to a variety of other formats including standard
Martin Geisler
doc/README: simplify instructions
 r9419 UNIX man page format and HTML. You'll need to install Docutils:
jake@edge2.net
adding doc directory and files
 r177
Martin Geisler
doc: update README with links to Docutils
 r9172 http://docutils.sourceforge.net/
jake@edge2.net
adding doc directory and files
 r177
Martin Geisler
doc: update README with links to Docutils
 r9172 Use the Makefile in this directory to generate the man and HTML pages.