view mercurial/cacheutil.py @ 46588:47557ea79fc7

copies-rust: move CPU-heavy Rust processing into a child thread

… that runs in parallel with the parent thread fetching data.
This can be disabled through a new config. CLI example:

    hg --config=devel.copy-tracing.multi-thread=no

For now both threads use the GIL, later commits will reduce this.

Differential Revision: https://phab.mercurial-scm.org/D9684

# scmutil.py - Mercurial core utility functions
#
#  Copyright Matt Mackall <[e-mail]> and other
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import

from . import repoview


def cachetocopy(srcrepo):
    """return the list of cache file valuable to copy during a clone"""
    # In local clones we're copying all nodes, not just served
    # ones. Therefore copy all branch caches over.
    cachefiles = [b'branch2']
    cachefiles += [b'branch2-%s' % f for f in repoview.filtertable]
    cachefiles += [b'rbc-names-v1', b'rbc-revs-v1']
    cachefiles += [b'tags2']
    cachefiles += [b'tags2-%s' % f for f in repoview.filtertable]
    cachefiles += [b'hgtagsfnodes1']
    return cachefiles