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comparison design.txt @ 209:9ce3b26798c4

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Few branches (distinct BranchChains from distinct heads) may end up with same nodes. Building BC structure fixed to reuse chain elements
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 28 Apr 2011 03:44:45 +0200
parents ffc5f6d59f7e
children 2fadf8695f8a
comparison
equal deleted inserted replaced
208:ef8eba4aa215 209:9ce3b26798c4
65 Commands to get CommandContext where they may share various caches (e.g. StatusCollector) 65 Commands to get CommandContext where they may share various caches (e.g. StatusCollector)
66 Perhaps, abstract classes for all Inspectors (i.e. StatusCollector.Inspector) for users to use as base classes to protect from change? 66 Perhaps, abstract classes for all Inspectors (i.e. StatusCollector.Inspector) for users to use as base classes to protect from change?
67 67
68 -cancellation and progress support 68 -cancellation and progress support
69 -timestamp check for revlog to recognize external changes 69 -timestamp check for revlog to recognize external changes
70 -HgDate or any other better access to time info
71 -(low) RepositoryComparator#calculateMissingBranches may query branches for the same head more than once
72 (when there are few heads that end up with common nodes). e.g hg4j revision 7 against remote hg4j revision 206
70 73
71 >>>> Effective file read/data access 74 >>>> Effective file read/data access
72 ReadOperation, Revlog does: repo.getFileSystem().run(this.file, new ReadOperation(), long start=0, long end = -1) 75 ReadOperation, Revlog does: repo.getFileSystem().run(this.file, new ReadOperation(), long start=0, long end = -1)
73 ReadOperation gets buffer (of whatever size, as decided by FS impl), parses it and then reports if needs more data. 76 ReadOperation gets buffer (of whatever size, as decided by FS impl), parses it and then reports if needs more data.
74 This helps to ensure streams are closed after reading, allows caching (if the same file (or LRU) is read few times in sequence) 77 This helps to ensure streams are closed after reading, allows caching (if the same file (or LRU) is read few times in sequence)