pjs/testing/performance/talos/utils.py

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# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is standalone Firefox performance tests.
#
# The Initial Developer of the Original Code is The Mozilla Corporation.
# Portions created by the Initial Developer are Copyright (C) 2007
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Zach Lipton <zach@zachlipton.com>
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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# ***** END LICENSE BLOCK *****
"""Utility functions"""
import config
import os
saved_environment = {}
def debug(message):
"""Prints a debug message to the console if the DEBUG switch is turned on
in config.py
Args:
message: string containing a debugging statement
"""
if config.DEBUG == 1:
print message
def setEnvironmentVars(newVars):
"""Sets environment variables as specified by env, an array of variables
from config.py"""
env = os.environ
for var in newVars:
# save the old values so they can be restored later:
try:
saved_environment[var] = str(env[var])
except :
saved_environment[var] = ""
env[var] = str(newVars[var])
def restoreEnvironmentVars():
"""Restores environment variables to the state they were in before
setEnvironmentVars() was last called"""
for var in saved_environment:
os.environ[var] = saved_environment[var]