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mercurial/cacheutil.py
author Pierre-Yves David <pierre-yves.david@octobus.net>
Thu, 07 Mar 2024 10:55:22 +0100
changeset 51531 f85f23f1479b
parent 51520 fe8347b984f3
permissions -rw-r--r--
branchcache: skip entries that are topological heads in the on disk file In the majority of cases, topological heads are also branch heads. We have efficient way to get the topological heads and efficient way to retrieve their branch information. So there is little value in putting them in the branch cache file explicitly. On the contrary, writing them explicitly tend to create very large cache file that are inefficient to read and update. So the branch cache v3 format is no longer including them. This changeset focus on the format aspect and have no focus on the performance aspect. We will cover that later.
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# scmutil.py - Mercurial core utility functions
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#
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#  Copyright Olivia Mackall <olivia@selenic.com> and other
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from . import repoview












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def cachetocopy(srcrepo):












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    """return the list of cache file valuable to copy during a clone"""












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    # In local clones we're copying all nodes, not just served












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    # ones. Therefore copy all branch caches over.







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    cachefiles = [b'branch2']












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    cachefiles += [b'branch2-%s' % f for f in repoview.filtertable]







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    cachefiles += [b'branch3']












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    cachefiles += [b'branch3-%s' % f for f in repoview.filtertable]







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    cachefiles += [b'rbc-names-v1', b'rbc-revs-v1']












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    cachefiles += [b'tags2']












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    cachefiles += [b'tags2-%s' % f for f in repoview.filtertable]












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    cachefiles += [b'hgtagsfnodes1']







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    return cachefiles














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