view tests/lockdelay.py @ 38340:9abe91a503da

graph: improve graph output by using Unicode characters

This extension beautifies log -G output by using Unicode characters.

A terminal with UTF-8 support and a monospace Unicode font are required.

Differential Revision: https://phab.mercurial-scm.org/D3665

# 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