Mercurial > hg
annotate contrib/clang-format-ignorelist @ 47120:7109a38830c9
dirstate-tree: Fold "tracked descendants" counter update in main walk
For the purpose of implementing `has_tracked_dir` (which means "has tracked
descendants) without an expensive sub-tree traversal, we maintaing a counter
of tracked descendants on each "directory" node of the tree-shaped dirstate.
Before this changeset, mutating or inserting a node at a given path would
involve:
* Walking the tree from root through ancestors to find the node or the spot
where to insert it
* Looking at the previous node if any to decide what counter update is needed
* Performing any node mutation
* Walking the tree *again* to update counters in ancestor nodes
When profiling `hg status` on a large repo, this second walk takes times
while loading a the dirstate from disk.
It turns out we have enough information to decide before he first tree walk
what counter update is needed. This changeset merges the two walks, gaining
~10% of the total time for `hg update` (in the same hyperfine benchmark as
the previous changeset).
---
Profiling was done by compiling with this `.cargo/config`:
[profile.release]
debug = true
then running with:
py-spy record -r 500 -n -o /tmp/hg.json --format speedscope -- \
./hg status -R $REPO --config experimental.dirstate-tree.in-memory=1
then visualizing the recorded JSON file in https://www.speedscope.app/
Differential Revision: https://phab.mercurial-scm.org/D10554
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Fri, 30 Apr 2021 14:22:14 +0200 |
parents | e92ca942ddca |
children |
rev | line source |
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34834
2e8477059d4f
test-clang-format: new test to verify that files stay clang-formatted
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
1 # Files that just need to be migrated to the formatter. |
2e8477059d4f
test-clang-format: new test to verify that files stay clang-formatted
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
2 # Do not add new files here! |
2e8477059d4f
test-clang-format: new test to verify that files stay clang-formatted
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
3 mercurial/cext/manifest.c |
2e8477059d4f
test-clang-format: new test to verify that files stay clang-formatted
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
4 mercurial/cext/osutil.c |
2e8477059d4f
test-clang-format: new test to verify that files stay clang-formatted
Augie Fackler <augie@google.com>
parents:
diff
changeset
|
5 # Vendored code that we should never format: |
44037
98944715a02c
fix: convert clang-format-ignorelist to use wildcards
Kyle Lippincott <spectral@google.com>
parents:
43994
diff
changeset
|
6 syntax: glob |
98944715a02c
fix: convert clang-format-ignorelist to use wildcards
Kyle Lippincott <spectral@google.com>
parents:
43994
diff
changeset
|
7 contrib/python-zstandard/**.c |
98944715a02c
fix: convert clang-format-ignorelist to use wildcards
Kyle Lippincott <spectral@google.com>
parents:
43994
diff
changeset
|
8 contrib/python-zstandard/**.h |
98944715a02c
fix: convert clang-format-ignorelist to use wildcards
Kyle Lippincott <spectral@google.com>
parents:
43994
diff
changeset
|
9 hgext/fsmonitor/pywatchman/**.c |
98944715a02c
fix: convert clang-format-ignorelist to use wildcards
Kyle Lippincott <spectral@google.com>
parents:
43994
diff
changeset
|
10 mercurial/thirdparty/**.c |
98944715a02c
fix: convert clang-format-ignorelist to use wildcards
Kyle Lippincott <spectral@google.com>
parents:
43994
diff
changeset
|
11 mercurial/thirdparty/**.h |
46374
e92ca942ddca
cext: add Python 3.10 support
Victor Stinner <vstinner@python.org>
parents:
44037
diff
changeset
|
12 mercurial/pythoncapi_compat.h |