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SimSettings.py
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SimSettings.py
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#!/usr/bin/python
"""
\brief Container for the settings of a simulation run.
\author Thomas Watteyne <[email protected]>
\author Kazushi Muraoka <[email protected]>
\author Nicola Accettura <[email protected]>
\author Xavier Vilajosana <[email protected]>
"""
from __future__ import division
# =========================== imports =========================================
from builtins import object
import math
import os
import re
# =========================== defines =========================================
# =========================== body ============================================
class SimSettings(object):
# ==== class attributes / definitions
DEFAULT_LOG_ROOT_DIR = 'simData'
# ==== start singleton
_instance = None
_init = False
def __new__(cls, *args, **kwargs):
if not cls._instance:
cls._instance = super(SimSettings, cls).__new__(cls)
return cls._instance
# ==== end singleton
def __init__(
self,
cpuID=None,
run_id=None,
failIfNotInit=False,
log_root_dir=DEFAULT_LOG_ROOT_DIR,
**kwargs
):
if failIfNotInit and not self._init:
raise EnvironmentError('SimSettings singleton not initialized.')
# ==== start singleton
cls = type(self)
if cls._init:
return
cls._init = True
# ==== end singleton
try:
# store params
self.cpuID = cpuID
self.run_id = run_id
self.logRootDirectoryPath = os.path.abspath(log_root_dir)
if kwargs:
self.__dict__.update(kwargs)
if self.exec_numSlotframesPerRun and self.exec_minutesPerRun:
raise ValueError(
'exec_numSlotframesPerRun should be null ' +
'when exec_minutesPerRun is used'
)
elif self.exec_minutesPerRun:
assert self.exec_numSlotframesPerRun is None
# convert "minutes" to "slot
self.exec_numSlotframesPerRun = int(
math.ceil(
self.exec_minutesPerRun *
60 /
self.tsch_slotDuration /
self.tsch_slotframeLength
)
)
# invdalite self.exec_minutesPerRun for the sake
# of extract_config_json.py and the exception
# handler who generates config.json for
# reproduction
self.exec_minutesPerRun = None
elif self.exec_numSlotframesPerRun:
assert self.exec_minutesPerRun is None
self.exec_numSlotframesPerRun = int(
self.exec_numSlotframesPerRun
)
else:
raise ValueError(
'either exec_numSlotframesPerRun or ' +
'exec_minutesPerRun should be specified'
)
except:
# destroy the singleton
cls._instance = None
cls._init = False
raise
def setLogDirectory(self, log_directory_name):
self.logDirectory = log_directory_name
def setCombinationKeys(self, combinationKeys):
self.combinationKeys = combinationKeys
def getOutputFile(self):
# directory
dirname = os.path.join(
self.logRootDirectoryPath,
self.logDirectory,
'_'.join(['{0}_{1}'.format(k, getattr(self, k)) for k in self.combinationKeys]),
)
# direname could have sub-strings which look like u'...'. This would
# happen if a combination key is a list having unicode strings. We'll
# remove the "u" prefixed quotations.
dirname = re.sub(r"u'(.*?)'", r"\1", dirname)
if not os.path.exists(dirname):
try:
os.makedirs(dirname)
except OSError as e:
if e.errno == os.errno.EEXIST:
# FIXME: handle this race condition properly
# Another core/CPU has already made this directory
pass
else:
raise
# file
if self.cpuID is None:
tempname = 'output.dat'
else:
tempname = 'output_cpu{0}.dat'.format(self.cpuID)
datafilename = os.path.join(dirname, tempname)
return datafilename
def destroy(self):
cls = type(self)
cls._instance = None
cls._init = False