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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.
Matt Mackall - - Load All Authors

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% init
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@ changeset: 34:fea3ac5810e0
| tag: tip
| parent: 32:d06dffa21a31
| user: test
| date: Thu Jan 01 00:00:34 1970 +0000
| summary: (34) head
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| o changeset: 33:68608f5145f9
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| | user: test
| | date: Thu Jan 01 00:00:33 1970 +0000
| | summary: (33) head
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o | changeset: 32:d06dffa21a31
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| | | summary: (32) expand
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| o | changeset: 31:621d83e11f67
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| | | | summary: (31) expand
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| | o | changeset: 30:6e11cd4b648f
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| | | | | date: Thu Jan 01 00:00:30 1970 +0000
| | | | | summary: (30) expand
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| | | | | summary: (29) regular commit
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| | | | | | parent: 26:7f25b6c2f0b9
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| | | | | | date: Thu Jan 01 00:00:28 1970 +0000
| | | | | | summary: (28) merge zero known
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| | o---+ changeset: 26:7f25b6c2f0b9
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| | | | | date: Thu Jan 01 00:00:26 1970 +0000
| | | | | summary: (26) merge one known; far right
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+---o | | changeset: 25:91da8ed57247
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| | | | | parent: 24:a9c19a3d96b7
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| | | | | date: Thu Jan 01 00:00:25 1970 +0000
| | | | | summary: (25) merge one known; far left
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| | | | | summary: (24) merge one known; immediate right
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| | | | | parent: 22:e0d9cccacb5d
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| | | | | date: Thu Jan 01 00:00:23 1970 +0000
| | | | | summary: (23) merge one known; immediate left
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+---o---+ changeset: 22:e0d9cccacb5d
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| | | | summary: (22) merge two known; one far left, one far right
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| | | | date: Thu Jan 01 00:00:20 1970 +0000
| | | | summary: (20) merge two known; two far right
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| | | | | date: Thu Jan 01 00:00:19 1970 +0000
| | | | | summary: (19) expand
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| | | | summary: (18) merge two known; two far left
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| | | | | summary: (17) expand
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| | o---+ changeset: 16:3677d192927d
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| | | | date: Thu Jan 01 00:00:16 1970 +0000
| | | | summary: (16) merge two known; one immediate right, one near right
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| | | | | date: Thu Jan 01 00:00:15 1970 +0000
| | | | | summary: (15) expand
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| | | | date: Thu Jan 01 00:00:14 1970 +0000
| | | | summary: (14) merge two known; one immediate right, one far right
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| | | | | summary: (13) expand
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| | | | date: Thu Jan 01 00:00:12 1970 +0000
| | | | summary: (12) merge two known; one immediate right, one far left
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| o | | changeset: 11:832d76e6bdf2
| |\ \ \ parent: 6:b105a072e251
| | | | | parent: 10:74c64d036d72
| | | | | user: test
| | | | | date: Thu Jan 01 00:00:11 1970 +0000
| | | | | summary: (11) expand
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| | o---+ changeset: 10:74c64d036d72
| | | | | parent: 0:e6eb3150255d
| |/ / / parent: 6:b105a072e251
| | | | user: test
| | | | date: Thu Jan 01 00:00:10 1970 +0000
| | | | summary: (10) merge two known; one immediate left, one near right
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o | | | changeset: 9:7010c0af0a35
|\ \ \ \ parent: 7:b632bb1b1224
| | | | | parent: 8:7a0b11f71937
| | | | | user: test
| | | | | date: Thu Jan 01 00:00:09 1970 +0000
| | | | | summary: (9) expand
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| o-----+ changeset: 8:7a0b11f71937
| | | | | parent: 0:e6eb3150255d
|/ / / / parent: 7:b632bb1b1224
| | | | user: test
| | | | date: Thu Jan 01 00:00:08 1970 +0000
| | | | summary: (8) merge two known; one immediate left, one far right
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o | | | changeset: 7:b632bb1b1224
|\ \ \ \ parent: 2:3d9a33b8d1e1
| | | | | parent: 5:4409d547b708
| | | | | user: test
| | | | | date: Thu Jan 01 00:00:07 1970 +0000
| | | | | summary: (7) expand
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+---o | | changeset: 6:b105a072e251
| |/ / / parent: 2:3d9a33b8d1e1
| | | | parent: 5:4409d547b708
| | | | user: test
| | | | date: Thu Jan 01 00:00:06 1970 +0000
| | | | summary: (6) merge two known; one immediate left, one far left
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| o | | changeset: 5:4409d547b708
| |\ \ \ parent: 3:27eef8ed80b4
| | | | | parent: 4:26a8bac39d9f
| | | | | user: test
| | | | | date: Thu Jan 01 00:00:05 1970 +0000
| | | | | summary: (5) expand
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| | o | | changeset: 4:26a8bac39d9f
| |/|/ / parent: 1:6db2ef61d156
| | | | parent: 3:27eef8ed80b4
| | | | user: test
| | | | date: Thu Jan 01 00:00:04 1970 +0000
| | | | summary: (4) merge two known; one immediate left, one immediate right
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| o | | changeset: 3:27eef8ed80b4
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| | | date: Thu Jan 01 00:00:03 1970 +0000
| | | summary: (3) collapse
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| | date: Thu Jan 01 00:00:02 1970 +0000
| | summary: (2) collapse
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| date: Thu Jan 01 00:00:01 1970 +0000
| summary: (1) collapse
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date: Thu Jan 01 00:00:00 1970 +0000
summary: (0) root
% file glog
@ changeset: 34:fea3ac5810e0
| tag: tip
| parent: 32:d06dffa21a31
| user: test
| date: Thu Jan 01 00:00:34 1970 +0000
| summary: (34) head
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| o changeset: 33:68608f5145f9
| | parent: 18:1aa84d96232a
| | user: test
| | date: Thu Jan 01 00:00:33 1970 +0000
| | summary: (33) head
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o | changeset: 32:d06dffa21a31
|\ \ parent: 27:886ed638191b
| | | parent: 31:621d83e11f67
| | | user: test
| | | date: Thu Jan 01 00:00:32 1970 +0000
| | | summary: (32) expand
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| o | changeset: 31:621d83e11f67
| | | parent: 21:d42a756af44d
| | | parent: 30:6e11cd4b648f
| | | user: test
| | | date: Thu Jan 01 00:00:31 1970 +0000
| | | summary: (31) expand
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| o | changeset: 30:6e11cd4b648f
| |\ \ parent: 28:44ecd0b9ae99
| | | | parent: 29:cd9bb2be7593
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| | | | date: Thu Jan 01 00:00:30 1970 +0000
| | | | summary: (30) expand
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| | o | changeset: 29:cd9bb2be7593
| | | | parent: 0:e6eb3150255d
| | | | user: test
| | | | date: Thu Jan 01 00:00:29 1970 +0000
| | | | summary: (29) regular commit
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| o | | changeset: 28:44ecd0b9ae99
| | | | parent: 1:6db2ef61d156
| | | | parent: 26:7f25b6c2f0b9
| | | | user: test
| | | | date: Thu Jan 01 00:00:28 1970 +0000
| | | | summary: (28) merge zero known
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o | | | changeset: 27:886ed638191b
| | | | parent: 21:d42a756af44d
| | | | user: test
| | | | date: Thu Jan 01 00:00:27 1970 +0000
| | | | summary: (27) collapse
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| o | | changeset: 26:7f25b6c2f0b9
| | | | parent: 18:1aa84d96232a
| | | | parent: 25:91da8ed57247
| | | | user: test
| | | | date: Thu Jan 01 00:00:26 1970 +0000
| | | | summary: (26) merge one known; far right
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| o | | changeset: 25:91da8ed57247
| | | | parent: 21:d42a756af44d
| | | | parent: 24:a9c19a3d96b7
| | | | user: test
| | | | date: Thu Jan 01 00:00:25 1970 +0000
| | | | summary: (25) merge one known; far left
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| o | | changeset: 24:a9c19a3d96b7
| | | | parent: 0:e6eb3150255d
| | | | parent: 23:a01cddf0766d
| | | | user: test
| | | | date: Thu Jan 01 00:00:24 1970 +0000
| | | | summary: (24) merge one known; immediate right
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| o | | changeset: 23:a01cddf0766d
| | | | parent: 1:6db2ef61d156
| | | | parent: 22:e0d9cccacb5d
| | | | user: test
| | | | date: Thu Jan 01 00:00:23 1970 +0000
| | | | summary: (23) merge one known; immediate left
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| o | | changeset: 22:e0d9cccacb5d
|/ / / parent: 18:1aa84d96232a
| | | parent: 21:d42a756af44d
| | | user: test
| | | date: Thu Jan 01 00:00:22 1970 +0000
| | | summary: (22) merge two known; one far left, one far right
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o | | changeset: 21:d42a756af44d
|\ \ \ parent: 19:31ddc2c1573b
| | | | parent: 20:d30ed6450e32
| | | | user: test
| | | | date: Thu Jan 01 00:00:21 1970 +0000
| | | | summary: (21) expand
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| o---+ changeset: 20:d30ed6450e32
| | | parent: 0:e6eb3150255d
| / / parent: 18:1aa84d96232a
| | | user: test
| | | date: Thu Jan 01 00:00:20 1970 +0000
| | | summary: (20) merge two known; two far right
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o | | changeset: 19:31ddc2c1573b
|\ \ \ parent: 15:1dda3f72782d
| | | | parent: 17:44765d7c06e0
| | | | user: test
| | | | date: Thu Jan 01 00:00:19 1970 +0000
| | | | summary: (19) expand
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+-----o changeset: 18:1aa84d96232a
| | | parent: 1:6db2ef61d156
| | | parent: 15:1dda3f72782d
| | | user: test
| | | date: Thu Jan 01 00:00:18 1970 +0000
| | | summary: (18) merge two known; two far left
| | |
| o | changeset: 17:44765d7c06e0
| |\ \ parent: 12:86b91144a6e9
| | | | parent: 16:3677d192927d
| | | | user: test
| | | | date: Thu Jan 01 00:00:17 1970 +0000
| | | | summary: (17) expand
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| | o | changeset: 16:3677d192927d
| | | | parent: 0:e6eb3150255d
| | | | parent: 1:6db2ef61d156
| | | | user: test
| | | | date: Thu Jan 01 00:00:16 1970 +0000
| | | | summary: (16) merge two known; one immediate right, one near right
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o | | | changeset: 15:1dda3f72782d
|\ \ \ \ parent: 13:22d8966a97e3
| | | | | parent: 14:8eac370358ef
| | | | | user: test
| | | | | date: Thu Jan 01 00:00:15 1970 +0000
| | | | | summary: (15) expand
| | | | |
| o | | | changeset: 14:8eac370358ef
| |/ / / parent: 0:e6eb3150255d
| | | | parent: 12:86b91144a6e9
| | | | user: test
| | | | date: Thu Jan 01 00:00:14 1970 +0000
| | | | summary: (14) merge two known; one immediate right, one far right
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o | | | changeset: 13:22d8966a97e3
|\ \ \ \ parent: 9:7010c0af0a35
| | | | | parent: 11:832d76e6bdf2
| | | | | user: test
| | | | | date: Thu Jan 01 00:00:13 1970 +0000
| | | | | summary: (13) expand
| | | | |
+---o | | changeset: 12:86b91144a6e9
| | / / parent: 1:6db2ef61d156
| | | | parent: 9:7010c0af0a35
| | | | user: test
| | | | date: Thu Jan 01 00:00:12 1970 +0000
| | | | summary: (12) merge two known; one immediate right, one far left
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| o | | changeset: 11:832d76e6bdf2
| | | | parent: 6:b105a072e251
| | | | parent: 10:74c64d036d72
| | | | user: test
| | | | date: Thu Jan 01 00:00:11 1970 +0000
| | | | summary: (11) expand
| | | |
| o | | changeset: 10:74c64d036d72
| | | | parent: 0:e6eb3150255d
| | | | parent: 6:b105a072e251
| | | | user: test
| | | | date: Thu Jan 01 00:00:10 1970 +0000
| | | | summary: (10) merge two known; one immediate left, one near right
| | | |
o | | | changeset: 9:7010c0af0a35
| | | | parent: 7:b632bb1b1224
| | | | parent: 8:7a0b11f71937
| | | | user: test
| | | | date: Thu Jan 01 00:00:09 1970 +0000
| | | | summary: (9) expand
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o | | | changeset: 8:7a0b11f71937
| | | | parent: 0:e6eb3150255d
| | | | parent: 7:b632bb1b1224
| | | | user: test
| | | | date: Thu Jan 01 00:00:08 1970 +0000
| | | | summary: (8) merge two known; one immediate left, one far right
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o | | | changeset: 7:b632bb1b1224
| | | | parent: 2:3d9a33b8d1e1
| | | | parent: 5:4409d547b708
| | | | user: test
| | | | date: Thu Jan 01 00:00:07 1970 +0000
| | | | summary: (7) expand
| | | |
| o | | changeset: 6:b105a072e251
|/ / / parent: 2:3d9a33b8d1e1
| | | parent: 5:4409d547b708
| | | user: test
| | | date: Thu Jan 01 00:00:06 1970 +0000
| | | summary: (6) merge two known; one immediate left, one far left
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o | | changeset: 5:4409d547b708
| | | parent: 3:27eef8ed80b4
| | | parent: 4:26a8bac39d9f
| | | user: test
| | | date: Thu Jan 01 00:00:05 1970 +0000
| | | summary: (5) expand
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o | | changeset: 4:26a8bac39d9f
| | | parent: 1:6db2ef61d156
| | | parent: 3:27eef8ed80b4
| | | user: test
| | | date: Thu Jan 01 00:00:04 1970 +0000
| | | summary: (4) merge two known; one immediate left, one immediate right
| | |
o | | changeset: 3:27eef8ed80b4
| | | user: test
| | | date: Thu Jan 01 00:00:03 1970 +0000
| | | summary: (3) collapse
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o | | changeset: 2:3d9a33b8d1e1
|/ / user: test
| | date: Thu Jan 01 00:00:02 1970 +0000
| | summary: (2) collapse
| |
o | changeset: 1:6db2ef61d156
|/ user: test
| date: Thu Jan 01 00:00:01 1970 +0000
| summary: (1) collapse
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o changeset: 0:e6eb3150255d
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: (0) root
% unused arguments
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show revision history alongside an ASCII revision graph
failed
% from outer space
@ changeset: 34:fea3ac5810e0
| tag: tip
| parent: 32:d06dffa21a31
| user: test
| date: Thu Jan 01 00:00:34 1970 +0000
| summary: (34) head
|
@ changeset: 34:fea3ac5810e0
| tag: tip
| parent: 32:d06dffa21a31
| user: test
| date: Thu Jan 01 00:00:34 1970 +0000
| summary: (34) head
|
% file log with revs != cset revs
@ changeset: 2:12c28321755b
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: more
|
o changeset: 1:5ac72c0599bf
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: two
% incoming and outgoing
requesting all changes
adding changesets
adding manifests
adding file changes
added 31 changesets with 31 changes to 1 files
o 34:fea3ac5810e0
|
| o 33:68608f5145f9
|
o 32:d06dffa21a31
|
o 27:886ed638191b
comparing with repo2
searching for changes
@ changeset: 34:fea3ac5810e0
| tag: tip
| parent: 32:d06dffa21a31
| user: test
| date: Thu Jan 01 00:00:34 1970 +0000
| summary: (34) head
|
| o changeset: 33:68608f5145f9
| parent: 18:1aa84d96232a
| user: test
| date: Thu Jan 01 00:00:33 1970 +0000
| summary: (33) head
|
o changeset: 32:d06dffa21a31
| parent: 27:886ed638191b
| parent: 31:621d83e11f67
| user: test
| date: Thu Jan 01 00:00:32 1970 +0000
| summary: (32) expand
|
o changeset: 27:886ed638191b
parent: 21:d42a756af44d
user: test
date: Thu Jan 01 00:00:27 1970 +0000
summary: (27) collapse