status: prefer relative paths in Rust code … when the repository root is under the current directory, so the kernel needs to traverse fewer directory in every call to `read_dir` or `symlink_metadata`. Better yet would be to use libc functions like `openat` and `fstatat` to remove such repeated traversals entirely, but the standard library does not provide APIs based on those. Maybe with a crate like https://crates.io/crates/openat instead? Benchmarks of `rhg status` show that this patch is neutral in some configurations, and makes the command up to ~20% faster in others. Below is semi-arbitrary subset of results. The four numeric columns are: time (in seconds) with this changeset’s parent, time with this changeset, time difference (negative is better), time ratio (less than 1 is better). ``` mercurial-dirstate-v1 | default-plain-clean.no-iu.pbr | 0.0061 -> 0.0059: -0.0002 (0.97) mercurial-dirstate-v2 | default-plain-clean.no-iu.pbr | 0.0029 -> 0.0028: -0.0001 (0.97) mozilla-dirstate-v1 | default-plain-clean.no-iu.pbr | 0.2110 -> 0.2102: -0.0007 (1.00) mozilla-dirstate-v2 | default-copies-clean.ignored.pbr | 0.0489 -> 0.0401: -0.0088 (0.82) mozilla-dirstate-v2 | default-copies-clean.no-iu.pbr | 0.0479 -> 0.0393: -0.0085 (0.82) mozilla-dirstate-v2 | default-copies-large.all.pbr | 0.1262 -> 0.1210: -0.0051 (0.96) mozilla-dirstate-v2 | default-copies-small.ignored-unknown.pbr | 0.1262 -> 0.1200: -0.0062 (0.95) mozilla-dirstate-v2 | default-copies-small.ignored.pbr | 0.0536 -> 0.0417: -0.0119 (0.78) mozilla-dirstate-v2 | default-copies-small.no-iu.pbr | 0.0482 -> 0.0393: -0.0089 (0.81) mozilla-dirstate-v2 | default-plain-clean.ignored.pbr | 0.0518 -> 0.0402: -0.0116 (0.78) mozilla-dirstate-v2 | default-plain-clean.no-iu.pbr | 0.0481 -> 0.0392: -0.0088 (0.82) mozilla-dirstate-v2 | default-plain-large.all.pbr | 0.1271 -> 0.1218: -0.0052 (0.96) mozilla-dirstate-v2 | default-plain-small.ignored-unknown.pbr | 0.1225 -> 0.1202: -0.0022 (0.98) mozilla-dirstate-v2 | default-plain-small.ignored.pbr | 0.0510 -> 0.0418: -0.0092 (0.82) mozilla-dirstate-v2 | default-plain-small.no-iu.pbr | 0.0480 -> 0.0394: -0.0086 (0.82) netbeans-dirstate-v1 | default-plain-clean.no-iu.pbr | 0.1442 -> 0.1422: -0.0020 (0.99) netbeans-dirstate-v2 | default-plain-clean.no-iu.pbr | 0.0325 -> 0.0282: -0.0043 (0.87) ``` Differential Revision: https://phab.mercurial-scm.org/D12175

     1

#require serve

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  $ cat <<EOF >> $HGRCPATH

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  > [extensions]

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  > schemes=

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  > 

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  > [schemes]

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  > l = http://localhost:$HGPORT/

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  > parts = http://{1}:$HGPORT/

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  > z = file:\$PWD/

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  > EOF

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  $ hg init test

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  $ cd test

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  $ echo a > a

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  $ hg ci -Am initial

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  adding a

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invalid scheme

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  $ hg log -R z:z

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  abort: no '://' in scheme url 'z:z'

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  [255]

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http scheme

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  $ hg serve -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log

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  $ cat hg.pid >> $DAEMON_PIDS

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  $ hg incoming l://

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  comparing with l://

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  searching for changes

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  no changes found

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  [1]

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check that {1} syntax works

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  $ hg incoming --debug parts://localhost

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  using http://localhost:$HGPORT/

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  sending capabilities command

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  comparing with parts://localhost/

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  query 1; heads

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  sending batch command

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  searching for changes

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  all remote heads known locally

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  no changes found

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  (sent 2 HTTP requests and * bytes; received * bytes in responses) (glob)

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  [1]

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check that paths are expanded

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  $ PWD=`pwd` hg incoming z://

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  comparing with z://

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  searching for changes

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  no changes found

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  [1]

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check that debugexpandscheme outputs the canonical form

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  $ hg debugexpandscheme bb://user/repo

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  https://bitbucket.org/user/repo

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expanding an unknown scheme emits the input

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  $ hg debugexpandscheme foobar://this/that

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  foobar://this/that

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expanding a canonical URL emits the input

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  $ hg debugexpandscheme https://bitbucket.org/user/repo

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  https://bitbucket.org/user/repo

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errors

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  $ cat errors.log

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  $ cd ..