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)
from mercurial.i18n import _
from mercurial import (
hg,
registrar,
)
from mercurial.utils import (
urlutil,
)
cmdtable = {}
command = registrar.command(cmdtable)
@command(b'getflogheads', [], b'path')
def getflogheads(ui, repo, path):
"""
Extension printing a remotefilelog's heads
Used for testing purpose
"""
dest = urlutil.get_unique_pull_path_obj(b'getflogheads', ui)
peer = hg.peer(repo, {}, dest)
try:
flogheads = peer.x_rfl_getflogheads(path)
finally:
peer.close()
if flogheads:
for head in flogheads:
ui.write(head + b'\n')
else:
ui.write(_(b'EMPTY\n'))