view mercurial/__init__.py @ 47425:e0a314bcbc9d

revlog: Extract low-level random-access file read caching logic

The `revlog` class does many things, among which fulfilling requests for
arbitrary byte slices from the revlog "data file" by reading a larger chunk
and caching it in memory, in order to reduce the number of system calls.

This extracts that logic into a new class, so that it may later also be used
for the side-data file (with another instance of that class).

The copyright notice of the new file does not include a date or author name
since such information tend not to be kept up-to-date:

https://www.linuxfoundation.org/en/blog/copyright-notices-in-open-source-software-projects/

Differential Revision: https://phab.mercurial-scm.org/D10878

# __init__.py - Startup and module loading logic for Mercurial.
#
# Copyright 2015 Gregory Szorc <[e-mail]>
#
# 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

# Allow 'from mercurial import demandimport' to keep working.
import hgdemandimport

demandimport = hgdemandimport