contrib/plan9/hgrc.d/9mail.rc
author |
Yuya Nishihara <yuya@tcha.org> |
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Sat, 24 Jun 2017 23:05:57 +0900 |
changeset 33092 |
a53bfc2845f2 |
parent 19617 |
ba89c3872801
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permissions |
-rw-r--r-- |
revset: add depth limit to descendants() (issue5374)
This is naive implementation using two-pass scanning. Tracking descendants
isn't an easy problem if both start and stop depths are specified. It's
impractical to remember all possible depths of each node while scanning from
roots to descendants because the number of depths explodes. Instead, we could
cache (min, max) depths as a good approximation and track ancestors back when
needed, but that's likely to have off-by-one bug.
Since this implementation appears not significantly slower, and is quite
straightforward, I think it's good enough for practical use cases. The time
and space complexity is O(n) ish.
revisions:
0) 1-pass scanning with (min, max)-depth cache (worst-case quadratic)
1) 2-pass scanning (this version)
repository:
mozilla-central
# descendants(0) (for reference)
*) 0.430353
# descendants(0, depth=1000)
0) 0.264889
1) 0.398289
# descendants(limit(tip:0, 1, offset=10000), depth=1000)
0) 0.025478
1) 0.029099
# descendants(0, depth=2000, startdepth=1000)
0) painfully slow (due to quadratic backtracking of ancestors)
1) 1.531138
19617
ba89c3872801
hgrc.d: separate namespace for mercurial scripts 9diff and 9mail
Jeff Sickel <jas@corpus-callosum.com>
parents:
diff
changeset
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1 |
# The 9mail to support patchbomb and other email wrappers
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ba89c3872801
hgrc.d: separate namespace for mercurial scripts 9diff and 9mail
Jeff Sickel <jas@corpus-callosum.com>
parents:
diff
changeset
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2 |
[email]
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ba89c3872801
hgrc.d: separate namespace for mercurial scripts 9diff and 9mail
Jeff Sickel <jas@corpus-callosum.com>
parents:
diff
changeset
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3 |
method = /bin/mercurial/9mail
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ba89c3872801
hgrc.d: separate namespace for mercurial scripts 9diff and 9mail
Jeff Sickel <jas@corpus-callosum.com>
parents:
diff
changeset
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4 |
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