view tests/test-inotify.t @ 17616:9535a0dc41f2

store: implement fncache basic path encoding in C

(This is not yet enabled; it will be turned on in a followup patch.)

The path encoding performed by fncache is complex and (perhaps
surprisingly) slow enough to negatively affect the overall performance
of Mercurial.

For a short path (< 120 bytes), the Python code can be reduced to a fairly
tractable state machine that either determines that nothing needs to be
done in a single pass, or performs the encoding in a second pass.

For longer paths, we avoid the more complicated hashed encoding scheme
for now, and fall back to Python.

Raw performance: I measured in a repo containing 150,000 files in its tip
manifest, with a median path name length of 57 bytes, and 95th percentile
of 96 bytes.

In this repo, the Python code takes 3.1 seconds to encode all path
names, while the hybrid C-and-Python code (called from Python) takes
0.21 seconds, for a speedup of about 14.

Across several other large repositories, I've measured the speedup from
the C code at between 26x and 40x.

For path names above 120 bytes where we must fall back to Python for
hashed encoding, the speedup is about 1.7x.  Thus absolute performance
will depend strongly on the characteristics of a particular repository.

  $ "$TESTDIR/hghave" inotify || exit 80
  $ hg init repo1
  $ cd repo1
  $ touch a b c d e
  $ mkdir dir
  $ mkdir dir/bar
  $ touch dir/x dir/y dir/bar/foo
  $ hg ci -Am m
  adding a
  adding b
  adding c
  adding d
  adding dir/bar/foo
  adding dir/x
  adding dir/y
  adding e
  $ cd ..
  $ hg clone repo1 repo2
  updating to branch default
  8 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo "[extensions]" >> $HGRCPATH
  $ echo "inotify=" >> $HGRCPATH
  $ cd repo2
  $ echo b >> a

check that daemon started automatically works correctly
and make sure that inotify.pidfile works

  $ hg --config "inotify.pidfile=../hg2.pid" status
  M a

make sure that pidfile worked. Output should be silent.

  $ kill `cat ../hg2.pid`
  $ cd ../repo1

inserve

  $ hg inserve -d --pid-file=hg.pid
  $ cat hg.pid >> "$DAEMON_PIDS"

let the daemon finish its stuff

  $ sleep 1

cannot start, already bound

  $ hg inserve
  abort: inotify-server: cannot start: socket is already bound
  [255]

issue907

  $ hg status
  ? hg.pid

clean

  $ hg status -c
  C a
  C b
  C c
  C d
  C dir/bar/foo
  C dir/x
  C dir/y
  C e

all

  $ hg status -A
  ? hg.pid
  C a
  C b
  C c
  C d
  C dir/bar/foo
  C dir/x
  C dir/y
  C e

path patterns

  $ echo x > dir/x
  $ hg status .
  M dir/x
  ? hg.pid
  $ hg status dir
  M dir/x
  $ cd dir
  $ hg status .
  M x
  $ cd ..

issue 1375
testing that we can remove a folder and then add a file with the same name
issue 1375

  $ mkdir h
  $ echo h > h/h
  $ hg ci -Am t
  adding h/h
  adding hg.pid
  $ hg rm h
  removing h/h
  $ echo h >h
  $ hg add h
  $ hg status
  A h
  R h/h
  $ hg ci -m0

Test for issue1735: inotify watches files in .hg/merge

  $ hg st
  $ echo a > a
  $ hg ci -Am a
  $ hg st
  $ echo b >> a
  $ hg ci -m ab
  $ hg st
  $ echo c >> a
  $ hg st
  M a
  $ HGMERGE=internal:local hg up 0
  1 files updated, 1 files merged, 2 files removed, 0 files unresolved
  $ hg st
  M a
  $ HGMERGE=internal:local hg up
  3 files updated, 1 files merged, 0 files removed, 0 files unresolved
  $ hg st
  M a

Test for 1844: "hg ci folder" will not commit all changes beneath "folder"

  $ mkdir 1844
  $ echo a > 1844/foo
  $ hg add 1844
  adding 1844/foo
  $ hg ci -m 'working'
  $ echo b >> 1844/foo
  $ hg ci 1844 -m 'broken'

Test for issue884: "Build products not ignored until .hgignore is touched"

  $ echo '^build$' > .hgignore
  $ hg add .hgignore
  $ hg ci .hgignore -m 'ignorelist'

Now, lets add some build products...

  $ mkdir build
  $ touch build/x
  $ touch build/y

build/x & build/y shouldn't appear in "hg st"

  $ hg st
  $ kill `cat hg.pid`

  $ cd ..