Martin von Zweigbergk <martinvonz@google.com> [Wed, 25 Mar 2015 14:13:46 -0700] rev 24466
test-manifest.py: rewrite tests in terms of manifestdict
By rewriting test-manifest.py in terms of manifestdict instead of
_lazymanifest, the tests can be run on treemanifests too. There are
still a few tests that fail on treemanifests. They will be addressed
in the next few patches.
Martin von Zweigbergk <martinvonz@google.com> [Wed, 25 Mar 2015 14:21:34 -0700] rev 24465
test-manifest.py: separate out test for double-free after copy()
The test that we don't double-free anything after creating a copy is
currently mixed with the __setitem__ test. Let's separate them.
Matt Harbison <matt_harbison@yahoo.com> [Wed, 25 Mar 2015 22:20:44 -0400] rev 24464
revert: evaluate subrepos to revert against the working directory
Reverting to a revision where the subrepo didn't exist will now abort, and
matching subrepos against the working directory is consistent with how filesets
are evaluated since
5b85a5bc5bbb.
Matt Harbison <matt_harbison@yahoo.com> [Wed, 25 Mar 2015 21:54:47 -0400] rev 24463
revert: handle subrepos missing in the given --rev
The list of subrepos to revert is currently based on the given --rev, so there
is currently no way for this to fail. Using the --rev context is wrong though,
because if the subrepo doesn't exist in --rev, it is skipped, so it won't be
changed. This change makes it so that the revert aborts, which is what happens
if a plain file is reverted to -1. Finding matches based on --rev is also
inconsistent with evaluating files against the working directory (
5b85a5bc5bbb).
This change is made now, so as to not cause breakage when the context is
switched in an upcoming patch.
Siddharth Agarwal <sid0@fb.com> [Wed, 25 Mar 2015 16:21:58 -0700] rev 24462
osutil: mark end of string with null char, not 0
Noticed this while working on other stuff in the area.
Siddharth Agarwal <sid0@fb.com> [Wed, 25 Mar 2015 15:55:31 -0700] rev 24461
osutil: use getdirentriesattr on OS X if possible
This is a significant win for large repositories on OS X, especially with a
cold cache. Unfortunately we need to keep the lstat-based implementation around
for two reasons:
- Not all filesystems support this call.
- There's an edge case in which it's best to fall back to avoid a retry loop.
More about this in the comments.
The below tests are all performed on a Mac with an SSD running OS X 10.9, on a
repository with over 200k files. The results are best of 5 with simulated
best-effort conditions.
The gains with a hot cache are pretty impressive: 'hg status' goes from 5.18
seconds to 3.79 seconds.
However, a repository that large will probably already be using something like
hgwatchman [1], which helps much more (for this repo, 'hg status' with
hgwatchman is approximately 1 second). Where this really helps is when the
cache is cold [2]: hg status goes from 31.0 seconds to 9.66.
See http://lists.apple.com/archives/filesystem-dev/2014/Dec/msg00002.html for
some more discussion about this function.
This is based on a patch by Sean Farley <sean@farley.io>.
[1] https://bitbucket.org/facebook/hgwatchman
[2] There appears to be no easy way to clear the file cache (aka "vnodes") on
OS X short of rebooting. purge(8) purportedly does that but in my testing had
little effect. The workaround I came up with was to assume that vnode eviction
was LRU, make sure the kern.maxvnodes sysctl is smaller than the size of the
repository, then make sure we'd always miss the cache by running 'hg status' in
another clone of the repository before running it in the test repository.
Siddharth Agarwal <sid0@fb.com> [Wed, 25 Mar 2015 16:43:29 -0700] rev 24460
osutil._listdir: rename to _listdir_stat
In upcoming patches we'll add another implementation of listdir on OS X. That
implementation will have to fall back to this one under some circumstances,
though. We'll make _listdir be able to detect those circumstances and use the
right function as appropriate.
Yuya Nishihara <yuya@tcha.org> [Mon, 16 Mar 2015 17:11:25 +0900] rev 24459
revset: optimize "x & fullreposet" case
If self is a smartset and other is a fullreposet, nothing should be necessary.
A small win for trivial query in mozilla-central repo:
revset #0: (0:100000)
0) wall 0.017211 comb 0.020000 user 0.020000 sys 0.000000 (best of 163)
1) wall 0.001324 comb 0.000000 user 0.000000 sys 0.000000 (best of 2160)
Yuya Nishihara <yuya@tcha.org> [Mon, 16 Mar 2015 18:36:53 +0900] rev 24458
debugrevspec: show nesting structure of smartsets if verbose
This shows how smartsets are constructed from the query. It will be somewhat
useful to track problems such as stack overflow.
Yuya Nishihara <yuya@tcha.org> [Mon, 16 Mar 2015 18:15:06 +0900] rev 24457
revset: add __repr__ to all smartset classes
This is sometimes useful for debugging.