view tests/lockdelay.py @ 45149:87047efbc6a6

debugcommands: create new debugantivirusrunning command

This writes the EICAR test file to .hg/cache, in an attempt to trigger
an AV scanner's scanning engine. This should let us (in theory) detect
some cases when a user's slowness is a result of AV scanning.

Differential Revision: https://phab.mercurial-scm.org/D8353

# Dummy extension that adds a delay after acquiring a lock.
#
# This extension can be used to test race conditions between lock acquisition.

from __future__ import absolute_import

import os
import time


def reposetup(ui, repo):
    class delayedlockrepo(repo.__class__):
        def lock(self):
            delay = float(os.environ.get('HGPRELOCKDELAY', '0.0'))
            if delay:
                time.sleep(delay)
            res = super(delayedlockrepo, self).lock()
            delay = float(os.environ.get('HGPOSTLOCKDELAY', '0.0'))
            if delay:
                time.sleep(delay)
            return res

    repo.__class__ = delayedlockrepo