comparison mercurial/tags.py @ 51597:b4a6a1ff8fce

tags-cache: skip the filternode step if we are not going to use it

When warming the hgtagsfnodescache, we don't need the actual result, so we can
simply skip the part that "filter" fnode we read from the cache. So provide a
quite visible speed up to the top level `hg debugupdatecache` function.

### data-env-vars.name            = mozilla-try-2023-03-22-zstd-sparse-revlog
  # benchmark.name                = hg.debug.debug-update-cache
  # bin-env-vars.hg.flavor        = default
  # bin-env-vars.hg.py-re2-module = default
  # benchmark.variants.pre-state  = warm
before: 19.947581
after:  18.916804   (-5.17%, -1.03)

51596:6378d57562af

def warm_cache(repo):
    """ensure the cache is properly filled"""
    unfi = repo.unfiltered()
    fnoderevs(repo.ui, unfi, unfi.changelog.revs())


def fnoderevs(ui, repo, revs):
    """return the list of '.hgtags' fnodes used in a set revisions

51597:b4a6a1ff8fce

def warm_cache(repo):
    """ensure the cache is properly filled"""
    unfi = repo.unfiltered()
    tonode = unfi.changelog.node
    nodes = [tonode(r) for r in unfi.changelog.revs()]
    _getfnodes(repo.ui, repo, nodes)


def fnoderevs(ui, repo, revs):
    """return the list of '.hgtags' fnodes used in a set revisions