def _connect_matlab_engine(self, use_existing=True, persistent=True):
"""
Connect to a matlab engine, starting a new one if it hasn't been started yet
:return:
"""
found_eng = False
if use_existing:
eng_names = engine.find_matlab()
for eng_name in eng_names:
try:
self.eng = engine.connect_matlab(eng_name)
self.eng_name = eng_name
found_eng = True
# unable to connect to an instance because it already has a connection
except matlab.engine.EngineError:
pass
if found_eng:
break
if not found_eng:
# if we're making a new persistent engine, create it
if persistent:
self.eng_name = self._start_persistent_shared_matlab()
self.eng = engine.connect_matlab(self.eng_name)
# otherwise, make a new engine just for the lifetime of self
else:
self.eng = engine.start_matlab()
self.eng_name = None # to be explicit
self.eng_deleted = False
def _connect(self, name_prefix=None):
sessions = me.find_matlab()
if not sessions:
return
if not name_prefix:
name = sessions[0]
else:
name = ''
for s in sessions:
if s.startswith(name_prefix):
name = s
break
if not name:
return False
try:
self._engine = me.connect_matlab(name)
logger.info('Connected to Matlab engine "{}"', name)
except me.EngineError:
logger.exception('Cannot connect to Matlab engine "{}"', name)
return False
self._name = name
return True
def _connect(self, name_prefix=None):
sessions = me.find_matlab()
if not sessions:
return
if not name_prefix:
name = sessions[0]
else:
name = ''
for s in sessions:
if s.startswith(name_prefix):
name = s
break
if not name:
return False
try:
print('Connecting to Matlab shared engine {}'.format(name))
self._engine = me.connect_matlab(name)
print('Connected to Matlab shared engine {}'.format(name))
except me.EngineError:
return False
self._name = name
return True
def __init__(
self,
m_file_path,
benchmark_os_path,
parallel,
shared_engine=None #TAG:MSH
):
self.parallel = parallel
import matlab.engine as matlab_engine
import matlab as matlab
# Don't seem to nee matlab.engine other than to start the matlab
# session.
# self.matlab_engine = matlab_engine
self.matlab = matlab
#TAG:MSH
if shared_engine is None:
print 'starting matlab...'
self.eng = matlab_engine.start_matlab()
print 'done'
else:
print 'attempting to connect to an existing matlab session'
self.eng = matlab_engine.connect_matlab(shared_engine)
self.m_file = m_file_path
m_file_name_split = self.m_file.split('.')
if m_file_name_split[1].strip() != 'm':
raise err.Fatal('internal error!')
self.m_fun_str = m_file_name_split[0].strip()
# self.sim_fun = self.eng.simulate_m_file(1)
# add paths
# comm.call_function([], 'addpath', [SQ + benchmark_os_path + SQ])
self.eng.addpath(benchmark_os_path)
#TAG:CLSS
# TODO: Remove this hack. Added for backwards compatibility
# detect if the simulator file is a function or a class
# source: http://blogs.mathworks.com/loren/2013/08/26/what-kind-of-matlab-file-is-this/
# classy = 8 if class else is 0 (function or a script)
classy = self.eng.exist(self.m_fun_str, 'class')
if classy == 0.0:
print 'maltab file is a function'
self.sim_is_class = False
elif classy == 8.0:
print 'maltab file is a class'
self.sim_is_class = True
self.sim_obj = self.eng.init_plant(self.m_fun_str)
else:
raise err.Fatal(
'''Supplied matlab simulator is neither a class or a function:
possible floating point error?. exist() returned: {}'''.format(
classy))
def __init__(
self,
m_file_path,
benchmark_os_path,
parallel,
shared_engine=None #TAG:MSH
):
self.parallel = parallel
import matlab.engine as matlab_engine
import matlab as matlab
# Don't seem to nee matlab.engine other than to start the matlab
# session.
# self.matlab_engine = matlab_engine
self.matlab = matlab
#TAG:MSH
if shared_engine is None:
print 'starting matlab...'
self.eng = matlab_engine.start_matlab()
print 'done'
else:
print 'attempting to connect to an existing matlab session'
self.eng = matlab_engine.connect_matlab(shared_engine)
self.m_file = m_file_path
m_file_name_split = self.m_file.split('.')
if m_file_name_split[1].strip() != 'm':
raise err.Fatal('internal error!')
self.m_fun_str = m_file_name_split[0].strip()
# self.sim_fun = self.eng.simulate_m_file(1)
# add paths
# comm.call_function([], 'addpath', [SQ + benchmark_os_path + SQ])
self.eng.addpath(benchmark_os_path)
#TAG:CLSS
# TODO: Remove this hack. Added for backwards compatibility
# detect if the simulator file is a function or a class
# source: http://blogs.mathworks.com/loren/2013/08/26/what-kind-of-matlab-file-is-this/
# classy = 8 if class else is 0 (function or a script)
classy = self.eng.exist(self.m_fun_str, 'class')
if classy == 0.0:
print 'maltab file is a function'
self.sim_is_class = False
elif classy == 8.0:
print 'maltab file is a class'
self.sim_is_class = True
self.sim_obj = self.eng.init_plant(self.m_fun_str)
else:
raise err.Fatal('''Supplied matlab simulator is neither a class or a function:
possible floating point error?. exist() returned: {}'''.format(classy))
def post(self, server):
global matlab
matlab = matlabEngine.connect_matlab(matlabEngine.find_matlab()[0])
opcClient = "opcClient" + server.replace(".", "")
opcItemGroup = "opcItemGroup" + server.replace(".", "")
matlab.eval(opcClient + " = opcda('localhost','" + server + "')", nargout=0)
matlab.eval("connect(" + opcClient + ")", nargout=0)
matlab.eval(opcItemGroup + " = addgroup(" + opcClient + ")", nargout=0)
matlab.eval("opcClientStatus = " + opcClient + ".Status", nargout=0)
opcServers[server] = {"id": server, "client": opcClient,
"status": matlab.workspace["opcClientStatus"], "itemGroup": opcItemGroup, "items": []}
return matlab.workspace["opcClientStatus"]
def engine():
try:
eng = connect_matlab('pytest')
# Keep the existing Matlab path
except EngineError:
eng = start_matlab()
# Add the local AT path
eng.addpath(eng.genpath(os.path.join(ROOT_DIR, 'atintegrators/')))
eng.addpath(eng.genpath(os.path.join(ROOT_DIR, 'atmat/')))
# Add the local test_matlab directory
eng.addpath(os.path.dirname(__file__))
yield eng
eng.quit()
def main(signal_index,bers):
import matlab
import matlab.engine as eng
engine = eng.connect_matlab()
qam_order = 4
# bers = [0.00223,0.00264,0.00262,0.00275,0.00294,0.00206,0.00566]
signal_power = 1
# signal_index = [2,3,4,5,6,7,8]
gn_snr = gn_results(signal_power,signal_index)
snrs = []
for ber in bers:
snrs.append(calc_snr(qam_order,ber))
error = matlab.double((np.array(gn_snr) - np.array(snrs)).tolist())
return error
def runHATL(script, modelfile, modelname=None, fromMATLAB=False):
global scriptFile
scriptFile = script
s = FileStream(script)
parser = ReaffirmParser(CommonTokenStream(ReaffirmLexer(s)))
tree = parser.prog()
print(tree.toStringTree(recog=parser))
sessions = engine.find_matlab()
eng = None
if sessions == () or fromMATLAB:
print("Starting MATLAB engine")
eng = engine.start_matlab()
else:
print("Connecting to MATLAB engine")
eng = engine.connect_matlab(sessions[0])
#set the appropriate path and then restore the cwd
oldpwd = eng.pwd()
assert ('REAFFIRM_ROOT' in os.environ)
eng.cd(os.environ['REAFFIRM_ROOT'])
eng.addpath(eng.genpath('functions'))
eng.cd(oldpwd)
print("Loading Initial Model")
eng.clear('all', nargout=0)
eng.bdclose('all', nargout=0)
try:
eng.load_system(modelfile)
except MatlabExecutionError as e:
print("Unable to open model '" + modelfile + "'", file=sys.stderr)
exit()
v = MATLABVisitor(eng, modelfile, modelname)
v.visit(tree)
print(v)
return v
def __init__(self, inputargs):
self.matlab = {}
# declare a dictionay of equivalent functions
self.funcMap = {'replace': 'strrep', 'addTransition': 'add_transition'}
self.fieldMap = {'flow': 'Label', 'guardLabel': 'LabelString'}
sessions = engine.find_matlab()
if sessions == ():
print("Starting MATLAB engine")
self.eng = engine.start_matlab()
else:
print("Connecting to MATLAB engine")
self.eng = engine.connect_matlab(sessions[0])
print("loading model")
# TODO: how do we handle/catch MatlabExecutionErrors?
self.eng.load_system(args['modelName'])
e = self.eng
self.model = e.find(
e.find(e.sfroot(), '-isa', 'Simulink.BlockDiagram'), '-isa',
'Stateflow.Chart')
def get(self):
matlab = matlabEngine.connect_matlab(matlabEngine.find_matlab()[0])
return matlab.opcserverinfo('localhost', nargout=1)["ServerID"]
