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# -*- coding: utf-8 -*-
#
# AWL simulator - Environment variables
#
# Copyright 2017 Michael Buesch <m@bues.ch>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
from __future__ import division, absolute_import, print_function, unicode_literals
#from awlsim.common.cython_support cimport * #@cy
from awlsim.common.compat import *
from awlsim.common.util import *
from awlsim.common.exceptions import *
import os
__all__ = [
"AwlSimEnv",
]
class AwlSimEnv(object):
"""Central environment variable handler.
"""
@classmethod
def getEnv(cls):
"""Get a copy of the environment dict.
"""
return dict(os.environ)
@classmethod
def clearLang(cls, env, lang="C"):
"""Reset the language settings of an environment dict
to some expected value and return the result.
"""
env = dict(env)
env["LANG"] = lang
for i in {"LANGUAGE", "LC_CTYPE", "LC_NUMERIC",
"LC_TIME", "LC_COLLATE", "LC_MONETARY",
"LC_MESSAGES", "LC_PAPER", "LC_NAME",
"LC_ADDRESS", "LC_TELEPHONE", "LC_MEASUREMENT",
"LC_IDENTIFICATION",}:
env.pop(i, None)
return env
@classmethod
def __getVar(cls, name, default=None):
return cls.getEnv().get("AWLSIM_" + name, default)
@classmethod
def getProfileLevel(cls):
"""Get AWLSIM_PROFILE.
"""
profileLevel = cls.__getVar("PROFILE", "0")
try:
profileLevel = int(profileLevel)
except ValueError as e:
profileLevel = 0
return clamp(profileLevel, 0, 2)
@classmethod
def getGuiFramework(cls):
"""Get AWLSIM_GUI.
"""
return cls.__getVar("GUI", "auto").lower()
@classmethod
def getAffinity(cls):
"""Get AWLSIM_AFFINITY.
Returns a list of host CPU indices or an empty list,
if all host CPUs are allowed.
"""
affinityStr = cls.__getVar("AFFINITY", "")
affinity = []
try:
for cpuIndex in affinityStr.split(","):
cpuIndex = int(cpuIndex)
if cpuIndex < 0:
try:
import multiprocessing
cpuIndex = multiprocessing.cpu_count() + cpuIndex
except ImportError as e:
pass
if cpuIndex < 0:
cpuIndex = 0
affinity.append(cpuIndex)
except ValueError as e:
affinity = []
return affinity
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