comparison mercurial/repoview.py @ 18101:a464deecc9dd

clfilter: add a cache on repo for set of revision to filter for a given set.

Recomputing the filtered revisions at every access to changelog is far too
expensive. This changeset introduce a cache for this information. This cache is
hold by the repository (unfiltered repository) and invalidated when necessary.
This cache is not a protected attribute (leading _) because some logic that
invalidate it is not held by the local repo itself.

18100:3a6ddacb7198

# function to compute filtered set
filtertable = {}

def filteredrevs(repo, filtername):
    """returns set of filtered revision for this filter name"""
    return filtertable[filtername](repo.unfiltered())

class repoview(object):
    """Provide a read/write view of a repo through a filtered changelog

    This object is used to access a filtered version of a repository without

18101:a464deecc9dd

# function to compute filtered set
filtertable = {}

def filteredrevs(repo, filtername):
    """returns set of filtered revision for this filter name"""
    if filtername not in repo.filteredrevcache:
        func = filtertable[filtername]
        repo.filteredrevcache[filtername] = func(repo.unfiltered())
    return repo.filteredrevcache[filtername]

class repoview(object):
    """Provide a read/write view of a repo through a filtered changelog

    This object is used to access a filtered version of a repository without