def test_get_instance_with_concurrent_mode(self, mr_rlock: RLockFactory):
try:
_rlock = mr_rlock.get_instance()
except ValueError as ve:
assert "FeatureMode is None. Please configure it as one of 'multirunnable.mode.FeatureMode'." in str(
ve), "It should set the FeatureMode first."
mr_rlock.feature_mode = FeatureMode.Concurrent
_rlock = mr_rlock.get_instance()
from threading import RLock
assert _rlock is not None and isinstance(_rlock, type(RLock(
))) is True, "This type of RLock instance should be 'threading.RLock'."
def RLock():
"""
Returns a recursive lock object
"""
from multiprocessing.synchronize import RLock
return RLock()
def __init__(self):
self._i = itertools.count(0)
self._items = {}
self._destroy = False
self.__lock = RLock()
class Synchroniser(object):
"""
@summary: Makes inter-thread comms synchronous.
"""
class Item(object):
def __init__(self, i):
self._i = i
self._sem = Semaphore(0)
self._result = []
def acquire(self, timeout=None):
return self._sem.acquire(block=True, timeout=timeout)
def result(self, result):
self._result.append(result)
# Now the result is complete, release it:
self._sem.release()
def getResult(self):
return self._result.pop(0)
def __init__(self):
self._i = itertools.count(0)
self._items = {}
self._destroy = False
self.__lock = RLock()
def _lock(self):
self.__lock.acquire()
def _unlock(self):
self.__lock.release()
def isValidTransactionId(self, i):
if i is None:
return False
with self.__lock:
return i in self._items.keys()
def create(self, enabler=True):
if not enabler:
return
with self.__lock:
self.checkDestroyed()
i = self._i.next()
self._items[i] = self._getItem(i)
return i
def _getItem(self, i):
return Synchroniser.Item(i)
def acquire(self, i, timeout=None, purge=False):
with self.__lock:
self.checkDestroyed()
try:
item = self._items[i]
except KeyError, _e:
sys.stderr.write("Acquire on a non-existent synchroniser: %(I)s\n" % {"I": i})
raise
result = item.acquire(timeout=timeout)
self.checkDestroyed()
if not result:
purge and self.purge(i)
raise TransactionFailed(i)
result = item.getResult()
if purge:
self.purge(i)
return result
def RLock():
from multiprocessing.synchronize import RLock
return RLock()
class Logger(object):
'''
Receives information from all the components, and saves to a file.
@cvar __instance: the instance to make possible the Singleton.
@ivar lock: the lock to keep synchronized the access to the file.
'''
__instance = None
@classmethod
def __new__(cls, *args, **kwargs):
'''
Redefines the constructor to make sure that you can't create
more than one instance.
'''
if cls.__instance is None:
cls.__instance = object.__new__(cls)
return cls.__instance
@classmethod
def get_instance(cls):
return cls.__instance
def __init__(self):
'''Constructor of Logger.'''
self.lock = RLock()
def open_log_file(self):
self._log_file = open(LOG_PATH, 'a')
self.write('The logger start its activity.')
def get_log(self):
'''Getter of _log_file.'''
return self._log_file
def close_log_file(self):
self.write('The logger has finished its activity.')
self._log_file.close()
def get_timestamp(self):
'''Get the current timestamp in a pretty format.'''
timestmp = datetime.now()
res = timestmp.strftime('%Y-%m-%d %H:%M:%S')
return '[' + res + '] '
def write(self, msg):
'''Put into the log the message received.'''
self.lock.acquire()
self.get_log().write(self.get_timestamp() + msg + '\n')
self.lock.release()
def clear_log_file(self):
pass
# file system logging
def log_del(self, name, fileordir):
self.write('FM - ' + fileordir + ' ' + name +
' was removed from the system')
def log_create(self, name, path, dirorfile):
res = 'FM - ' + dirorfile + ' ' + name \
+ ' was created in the directory ' + path
self.write(res)
def log_rename(self, old, new, dirorfile):
self.write('FM - ' + dirorfile + ' ' + old + ' was renamed to ' + new)
def log_datasaved(self, file_name):
self.write('FM - Data saved to file ' + file_name)
def log_openfile(self, name, pos):
res = 'FM - file ' + name + ' was opened in the address #' + str(pos)
self.write(res)
def log_closefile(self, name):
self.write('FM - file ' + name + ' was closed')
# CPU logging
def log_request(self, pid, req, msg):
res = 'CPU - request ' + str(req) + ' of process ' \
+ str(pid) + ' was ' + msg
self.write(res)
def log_free(self, pcb):
self.write('CPU - process ' + str(pcb.get_pid()) +
' free its resources')
def log_expropiate(self, pid):
self.write('CPU - process ' + str(pid) + ' was expropiated')
def log_execinst(self, pcb):
res = 'CPU - process ' + str(pcb.get_pid()) \
+ ' executes its instruction #' + str(pcb.get_pc())
self.write(res)
# I/O logging
# other logging
def log_newprocess(self, proc):
res = 'OS - process ' + str(proc.get_pid()) + '(' \
+ proc.get_name() + ') enter to the system'
self.write(res)
def log_killprocess(self, pcb):
res = 'OS - process ' + str(pcb.get_pid()) + '(' \
+ pcb.get_name() + ') finished or was killed.'
self.write(res)
print('process ' + str(pcb.get_pid()) + ' finish')
def __init__(self):
'''Constructor of Logger.'''
self.lock = RLock()
