phases: add an internal phases
The phase is meant to be used for internal commit that are a byproduct of
command operation (eg:shelve).
This changeset focus on getting the most important feature in, more advanced
API is to be introduced in later changesets.
The phase approach to handle internal has multiple advantages:
* simple to implement, reuse optimized code,
* fits well with existing phases. We don't want internal changeset to be
exchanged or served.
* easy to extend to for lifecycle handling.
More thinking about internal changeset at https://www.mercurial-scm.org/wiki/InternalsPlan
We add this new phases with a high number to leave some room to possible other
phases. We also try out playing with the idea of "flag" for phases, each flag
would convey a distinct meaning. We can drop the flag idea in the future
(keeping the existing numbers). The flag property should still move in a
monotonic direction (enabled -> disabled) or be immutable like the "internal"
flag.
To simplify the addition of this new phase, we introduce many placeholder
phases. They are not meant to be used for now. Keeping `allphases` as a list
ensure existing algorithm works fine.
The full performance impact of adding that many hollow phases is unclear so
far. The impact on phase computation is visible but not worrisome.
Runnin `hg perfphase` in my mercurial development repository.
Before: ! wall 0.001807 comb 0.000000 user 0.000000 sys 0.000000 (median of 1597)
after: ! wall 0.001906 comb 0.000000 user 0.000000 sys 0.000000 (median of 1521)
[This file is here for historical purposes, all recent contributors
should appear in the changelog directly]
Andrea Arcangeli <andrea at suse.de>
Thomas Arendsen Hein <thomas at intevation.de>
Goffredo Baroncelli <kreijack at libero.it>
Muli Ben-Yehuda <mulix at mulix.org>
Mikael Berthe <mikael at lilotux.net>
Benoit Boissinot <bboissin at gmail.com>
Brendan Cully <brendan at kublai.com>
Vincent Danjean <vdanjean.ml at free.fr>
Jake Edge <jake at edge2.net>
Michael Fetterman <michael.fetterman at intel.com>
Edouard Gomez <ed.gomez at free.fr>
Eric Hopper <hopper at omnifarious.org>
Alecs King <alecsk at gmail.com>
Volker Kleinfeld <Volker.Kleinfeld at gmx.de>
Vadim Lebedev <vadim at mbdsys.com>
Christopher Li <hg at chrisli.org>
Chris Mason <mason at suse.com>
Colin McMillen <mcmillen at cs.cmu.edu>
Wojciech Milkowski <wmilkowski at interia.pl>
Chad Netzer <chad.netzer at gmail.com>
Bryan O'Sullivan <bos at serpentine.com>
Vicent Seguí Pascual <vseguip at gmail.com>
Sean Perry <shaleh at speakeasy.net>
Nguyen Anh Quynh <aquynh at gmail.com>
Ollivier Robert <roberto at keltia.freenix.fr>
Alexander Schremmer <alex at alexanderweb.de>
Arun Sharma <arun at sharma-home.net>
Josef "Jeff" Sipek <jeffpc at optonline.net>
Kevin Smith <yarcs at qualitycode.com>
TK Soh <teekaysoh at yahoo.com>
Radoslaw Szkodzinski <astralstorm at gorzow.mm.pl>
Samuel Tardieu <sam at rfc1149.net>
K Thananchayan <thananck at yahoo.com>
Andrew Thompson <andrewkt at aktzero.com>
Michael S. Tsirkin <mst at mellanox.co.il>
Rafael Villar Burke <pachi at mmn-arquitectos.com>
Tristan Wibberley <tristan at wibberley.org>
Mark Williamson <mark.williamson at cl.cam.ac.uk>