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inotify: server: new data structure to keep track of changes....
inotify: server: new data structure to keep track of changes. == Rationale for the new structure == Current structure was a dictionary tree. One directory was tracked as a dictionary: - keys: file/subdir name - values: - for a file, the status (a/r/m/...) - for a subdir, the directory representing the subdir It allowed efficient lookups, no matter of the type of the terminal leaf: for part in path.split('/'): tree = tree[part] However, there is no way to represent a directory and a file with the same name because keys are conflicting in the dictionary. Concrete example: Initial state: root dir |- foo (file) |- bar (file) # data state is: {'foo': 'n', 'bar': 'n'} Remove foo: root dir |- bar (file) # Data becomes {'foo': 'r'} until next commit. Add foo, as a directory, and foo/barbar file: root dir |- bar (file) |-> foo (dir) |- barbar (file) # New state should be represented as: {'foo': {'barbar': 'a'}, 'bar': 'n'} however, the key "foo" is already used and represents the old file. The dirstate: D foo A foo/barbar cannot be represented, hence the need for a new structure. == The new structure == 'directory' class. Represents one directory level. * Notable attributes: Two dictionaries: - 'files' Maps filename -> status for the current dir. - 'dirs' Maps subdir's name -> directory object representing the subdir * methods - walk(), formerly server.walk - lookup(), old server.lookup - dir(), old server.dir This new class allows embedding all the tree walks/lookups in its own class, instead of having everything mixed together in server. Incidently, since files and directories are not stored in the same dictionaries, we are solving the previous key conflict problem. The small drawback is that lookup operation is a bit more complex: for a path a/b/c/d/e we have to check twice the leaf, if e is a directory or a file.
Benoit Boissinot - - Load All Authors

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Thomas Arendsen Hein
Remove bashisms and use /bin/sh instead of /bin/bash....
 r544 #!/bin/sh
mpm@selenic.com
Add hg copy...
 r363
hg init
echo a > a
hg add a
Thomas Arendsen Hein
Use 'hg ci -d "1000000 0"' in tests to circumvent problem with leading zero....
 r1933 hg commit -m "1" -d "1000000 0"
mpm@selenic.com
Add hg copy...
 r363 hg status
hg copy a b
hg status
Thomas Arendsen Hein
Use 'hg ci -d "1000000 0"' in tests to circumvent problem with leading zero....
 r1933 hg --debug commit -m "2" -d "1000000 0"
mpm@selenic.com
Update tests
 r1043 echo "we should see two history entries"
hg history -v
echo "we should see one log entry for a"
mpm@selenic.com
Add hg copy...
 r363 hg log a
mpm@selenic.com
Update tests
 r1043 echo "this should show a revision linked to changeset 0"
Benoit Boissinot
switch to the .hg/store layout, fix the tests
 r3853 hg debugindex .hg/store/data/a.i
mpm@selenic.com
Update tests
 r1043 echo "we should see one log entry for b"
hg log b
echo "this should show a revision linked to changeset 1"
Benoit Boissinot
switch to the .hg/store layout, fix the tests
 r3853 hg debugindex .hg/store/data/b.i
mpm@selenic.com
Update tests
 r1043
echo "this should show the rename information in the metadata"
Benoit Boissinot
switch to the .hg/store layout, fix the tests
 r3853 hg debugdata .hg/store/data/b.d 0 | head -3 | tail -2
mpm@selenic.com
Update tests
 r1043
Benoit Boissinot
switch to the .hg/store layout, fix the tests
 r3853 $TESTDIR/md5sum.py .hg/store/data/b.i
mpm@selenic.com
Fix pipe timing for copy test...
 r462 hg cat b > bsum
Peter van Dijk
fix testsuite for freebsd and one timingissue
 r1923 $TESTDIR/md5sum.py bsum
mpm@selenic.com
Fix pipe timing for copy test...
 r462 hg cat a > asum
Peter van Dijk
fix testsuite for freebsd and one timingissue
 r1923 $TESTDIR/md5sum.py asum
mpm@selenic.com
Add hg copy...
 r363 hg verify