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maps: add the "branchmaxrevnum" method to RevMap
Iterating the RevMap can be very expensive for large repos. To prevent future
code from iterating the possibly huge RevMap causing performance issues, it's
a good idea to clean all iterating code outside RevMap.
This patch adds a method used by "get_parent_svn_branch_and_rev".
In the future, we will have a SqliteRevMap, which will have an efficient
implementation for this query, and it will disable "__iter__" to prevent
future performance issues.
| author | Jun Wu <quark@fb.com> |
|---|---|
| date | Sat, 14 May 2016 20:33:57 +0100 |
| parents | 9c3b4f59e7e6 |
| children |
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SVN-fs-dump-format-version: 2 UUID: 307f02f4-2d74-44cb-98a4-4e162241d396 Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2012-10-06T08:50:46.559327Z PROPS-END Revision-number: 1 Prop-content-length: 105 Content-length: 105 K 10 svn:author V 7 pmezard K 8 svn:date V 27 2012-10-06T08:50:46.581582Z K 7 svn:log V 4 init PROPS-END Node-path: trunk Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Node-path: trunk/a Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 2 Text-content-md5: 60b725f10c9c85c70d97880dfe8191b3 Text-content-sha1: 3f786850e387550fdab836ed7e6dc881de23001b Content-length: 12 PROPS-END a Node-path: trunk/dir Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Node-path: trunk/dir/b Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 2 Text-content-md5: 3b5d5c3712955042212316173ccf37be Text-content-sha1: 89e6c98d92887913cadf06b2adb97f26cde4849b Content-length: 12 PROPS-END b Revision-number: 2 Prop-content-length: 113 Content-length: 113 K 10 svn:author V 7 pmezard K 8 svn:date V 27 2012-10-06T08:50:47.048033Z K 7 svn:log V 11 changefiles PROPS-END Node-path: trunk/a Node-kind: file Node-action: change Text-content-length: 4 Text-content-md5: 0d227f1abf8c2932d342e9b99cc957eb Text-content-sha1: d7c8127a20a396cff08af086a1c695b0636f0c29 Content-length: 4 a a Node-path: trunk/dir/b Node-kind: file Node-action: change Text-content-length: 4 Text-content-md5: 06ac26ed8b614fc0b141e4542aa067c2 Text-content-sha1: f6980469e74f7125178e88ec571e06fe6ce86e95 Content-length: 4 b b Revision-number: 3 Prop-content-length: 107 Content-length: 107 K 10 svn:author V 7 pmezard K 8 svn:date V 27 2012-10-06T08:50:50.058224Z K 7 svn:log V 6 revert PROPS-END Node-path: trunk Node-kind: dir Node-action: delete Node-path: trunk Node-kind: dir Node-action: add Node-copyfrom-rev: 1 Node-copyfrom-path: trunk Revision-number: 4 Prop-content-length: 108 Content-length: 108 K 10 svn:author V 7 pmezard K 8 svn:date V 27 2012-10-06T08:50:54.047396Z K 7 svn:log V 7 revert2 PROPS-END Node-path: trunk/a Node-kind: file Node-action: delete Node-path: trunk/a Node-kind: file Node-action: add Node-copyfrom-rev: 2 Node-copyfrom-path: trunk/a Text-copy-source-md5: 0d227f1abf8c2932d342e9b99cc957eb Text-copy-source-sha1: d7c8127a20a396cff08af086a1c695b0636f0c29 Node-path: trunk/dir/b Node-kind: file Node-action: delete Node-path: trunk/dir/b Node-kind: file Node-action: add Node-copyfrom-rev: 2 Node-copyfrom-path: trunk/dir/b Text-copy-source-md5: 06ac26ed8b614fc0b141e4542aa067c2 Text-copy-source-sha1: f6980469e74f7125178e88ec571e06fe6ce86e95