def customer(shared, cid):
barber = Semaphore(0)
while True:
sleep(randint(9, 10) / 100)
shared.mutex.lock()
if shared.customers == shared.N:
balk(cid)
shared.mutex.unlock()
continue
print(f"customer {cid} wait for...")
shared.queue.append(barber)
shared.customers += 1
shared.mutex.unlock()
shared.customer.signal()
barber.wait()
getHairCut(cid)
shared.customerDone.signal()
shared.barberDone.wait()
shared.mutex.lock()
shared.customers -= 1
shared.mutex.unlock()
def __init__(self, n, n_savages):
self.servings = n
self.mutex = Mutex()
self.empty_pot = Semaphore(0)
self.full_pot = Semaphore(0)
self.barrier1 = SimpleBarrier(n_savages)
self.barrier2 = SimpleBarrier(n_savages)
def __init__(self, n):
self.mutex = Mutex()
self.servings = 0
self.full_pot = Semaphore(0)
self.empty_pot = Semaphore(0)
self.barrier1 = SimpleBarrier(n)
self.barrier2 = SimpleBarrier(n)
def __init__(self, capacity):
self.free_space = Semaphore(capacity)
self.items = Semaphore(0)
self.mutex = Mutex()
self.produced = 0
self.consumed = 0
self.closed = False
class WareHouse:
def __init__(self, capacity):
self.free_space = Semaphore(capacity)
self.items = Semaphore(0)
self.mutex = Mutex()
self.produced = 0
self.consumed = 0
self.closed = False
def produce(self, time_to_produce):
sleep(time_to_produce)
self.mutex.lock()
self.produced += 1
self.mutex.unlock()
def consume(self, time_to_consume):
sleep(time_to_consume)
self.mutex.lock()
self.consumed += 1
self.mutex.unlock()
def stop_production(self, time_period):
sleep(time_period)
self.closed = True
self.items.signal(100)
self.free_space.signal(100)
def __init__(self):
self.oxygen = 0
self.hydrogen = 0
self.mutex = Mutex()
self.oxyQueue = Semaphore(0)
self.hydroQueue = Semaphore(0)
self.barrier = Barrier(3)
def __init__(self):
self.mutex = Mutex()
self.dealersQ = Semaphore()
self.officersQ = Semaphore()
self.officerCounter = 0
self.dealerCounter = 0
self.barrier = SimpleBarrier(4)
def __init__(self):
self.hackers = 0
self.serfs = 0
self.mutex = Mutex()
self.hackers_queue = Semaphore(0)
self.serfs_queue = Semaphore(0)
self.barrier = SimpleBarrier(4)
def __init__(self, n):
self.mutex = Mutex()
self.free_chairs = n
self.queue = []
self.customer = Semaphore(0)
self.barber = Semaphore(0)
self.customerDone = Semaphore(0)
self.barberDone = Semaphore(0)
def __init__(self):
self.mutex = Mutex()
self.mutex2 = Mutex()
self.servings = 0
self.full_pot = Semaphore(0)
self.empty_pot = Semaphore(0)
self.barrier1 = SimpleBarrier(number_of_savages)
self.barrier2 = SimpleBarrier(number_of_savages)
def __init__(self, N):
self.N = N
self.customers = 0
self.queue = []
self.mutex = Mutex()
self.customer = Semaphore(0)
self.customerDone = Semaphore(0)
self.barberDone = Semaphore(0)
def wait(self, last_signal: Semaphore):
self.M.lock()
self.C += 1
if self.C == self.N:
self.C = 0 # posledne vlakno nastavi pocitadlo na nulu
last_signal.signal()
self.T.signal(self.N) # uvolni N vlakien
self.M.unlock()
self.T.wait()
def __init__(self, c, m):
self.c = c
self.m = m
self.board_queue = Semaphore(0)
self.unboard_queue = Semaphore(0)
self.barrier = SimpleBarrier(c)
self.changed = Semaphore(0)
self.loading_area = [Semaphore(0) for i in range(m)]
self.unloading_area = [Semaphore(0) for i in range(m)]
def __init__(self, customer_capacity):
self.N = customer_capacity
self.customers = 0
self.mutex = Mutex()
self.barber = Semaphore(0)
self.customer = Semaphore(0)
self.barber_done = Semaphore(0)
self.customer_done = Semaphore(0)
def __init__(self, n, c):
self.mutex = Mutex()
self.chef_mutex = Mutex()
self.servings = 0
self.num_of_chefs = c
self.full_pot = Semaphore(0)
self.empty_pot = Semaphore(0)
self.barrier1 = SimpleBarrier(n)
self.barrier2 = SimpleBarrier(n)
self.chef_barrier2 = SimpleBarrier(c)
self.chef_barrier = SimpleBarrier(c + 1)
def init():
accessData = Semaphore(1)
turniket = Semaphore(1)
ls_monitor = Lightswitch()
ls_cidlo = Lightswitch()
validData = Event()
for monitor_id in range(2):
Thread(monitor, monitor_id, turniket, validData, ls_monitor, accessData)
for cidlo_id in range(11):
Thread(cidlo, cidlo_id, turniket, validData, ls_cidlo, accessData)
def __init__(self):
self.mutex = Mutex()
self.cooking = Mutex()
self.refill = Mutex()
self.servings = 0
self.active_cooks = 0
self.cooks_done = 0
self.full_pot = Semaphore(0)
self.empty_pot = Semaphore(0)
self.barrier1 = SimpleBarrier(N)
self.barrier2 = SimpleBarrier(N)
self.pot_ready = Semaphore(0)
def __init__(self, n_savages=5, n_cooks=3):
self.servings = 0
self.mutex = Mutex()
self.SERVINGS_NEEDED = n_savages
self.full_pot = Semaphore(0)
self.empty_pot = Semaphore(0)
self.barrier1 = SimpleBarrier(n_savages)
self.barrier2 = SimpleBarrier(n_savages)
self.cookLS = CookLS()
self.cookBarrier1 = SimpleBarrier(n_cooks)
self.cookBarrier2 = SimpleBarrier(n_cooks)
def __init__(self):
self.lightswitch_sensors = Lightswitch()
self.lightswitch_operators = Lightswitch()
self.written_data_by_sensors = Event()
self.without_operators = Semaphore(1)
self.without_sensors = Semaphore(1)
self.simple_barrier = SimpleBarrier(3)
self.operator = Operator(self.lightswitch_operators,
self.without_operators, self.without_sensors,
self.simple_barrier)
self.sensor = Sensor(self.lightswitch_sensors,
self.written_data_by_sensors,
self.without_sensors, self.without_operators,
self.simple_barrier)
class SimpleBarrier:
def __init__(self, n):
self.N = n
self.counter = 0
self.mutex = Mutex()
self.turnstile = Semaphore(0)
def wait(self):
self.mutex.lock()
self.counter += 1
if self.counter == self.N:
self.counter = 0
self.turnstile.signal(self.N)
self.mutex.unlock()
self.turnstile.wait()
class SimpleBarrier:
def __init__(self, N):
self.N = N
self.C = 0
self.M = Mutex()
self.T = Semaphore(0)
def wait(self):
self.M.lock()
self.C += 1
if self.C == self.N:
self.C = 0 # posledne vlakno nastavi pocitadlo na nulu
self.T.signal(self.N) # uvolni N vlakien
self.M.unlock()
self.T.wait()
class SimpleBarrier:
def __init__(self, N):
self.N = N
self.C = 0
self.M = Mutex()
self.T = Semaphore(0)
def wait(self):
self.M.lock()
self.C += 1
if self.C == self.N:
self.C = 0
self.T.signal(self.N)
self.M.unlock()
self.T.wait()
class Barrier:
def __init__(self, N):
self.N = N
self.mutex = Mutex()
self.counter = 0
self.semaphore = Semaphore(0)
def wait(self):
self.mutex.lock()
self.counter += 1
if self.counter == self.N:
self.counter = 0
self.semaphore.signal(self.N)
self.mutex.unlock()
self.semaphore.wait()
class SimpleBarrier():
def __init__(self, N):
self.mutex = Mutex()
self.capacity = N
self.counter = 0
self.sem = Semaphore()
def wait(self):
self.mutex.lock()
self.counter += 1
if self.counter == self.capacity:
print(f'Lod zakotvila s posadkou {self.counter} ludi')
self.counter = 0
self.sem.signal(self.capacity)
self.mutex.unlock()
self.sem.wait()
class SimpleBarrier:
def __init__(self, num_of_threads):
self.N = num_of_threads
self.cnt = 0
self.mutex = Mutex()
self.turnstile = Semaphore(0)
def wait(self):
self.mutex.lock()
self.cnt += 1
if self.cnt == self.N:
self.cnt = 0
for _ in range(self.N):
self.turnstile.signal()
self.mutex.unlock()
self.turnstile.wait()
class SimpleBarrier:
def __init__(self, N):
self.N = N
self.C = 0
self.M = Mutex()
self.T = Semaphore(0)
def wait(self, savage_id, barrier_id):
self.M.lock()
self.C += 1
print(f'savage {savage_id} before barrier {barrier_id}, {self.C} present')
if self.C == self.N:
print(f'savage {savage_id} opening barrier {barrier_id}')
self.C = 0 # posledne vlakno nastavi pocitadlo na nulu
self.T.signal(self.N) # uvolni N vlakien
self.M.unlock()
self.T.wait()
def __init__(self, numberOfThreads):
self.numberOfThreads = numberOfThreads
self.actualPosition = 1
self.fibannociList = [0, 1]
self.semaphoreList = []
for _ in range(numberOfThreads):
self.semaphoreList.append(Semaphore(0))
self.semaphoreList[0].signal()
def __init__(self, resources, smokers):
self.agentSem = Semaphore(1)
self.res = {
resources[i]: {
'sem': Semaphore(0),
'val': 0,
}
for i in range(len(resources))
}
self.res['mutex'] = Mutex()
self.smo = {
k: {
'sem': Semaphore(0),
'need': v,
}
for k, v in smokers.items()
}
class SimpleBarrier:
def __init__(self, n):
self.N = n
self.counter = 0
self.mutex = Mutex()
self.turnstile = Semaphore(0)
def wait(self, each=None, last=None):
self.mutex.lock()
self.counter += 1
if each:
print(each)
if self.counter == self.N:
self.counter = 0
if last:
print(last)
self.turnstile.signal(self.N)
self.mutex.unlock()
self.turnstile.wait()
class SimpleBarrier:
def __init__(self, N):
self.N = N
self.mutex = Mutex()
self.cnt = 0
self.sem = Semaphore(0)
def wait(self, print_str, id, print_last=False, print_each=False):
self.mutex.lock()
self.cnt += 1
if print_each:
print(print_str.format(id, self.cnt))
if self.cnt == self.N:
self.cnt = 0
if print_last:
print(print_str.format(id))
self.sem.signal(self.N)
self.mutex.unlock()
self.sem.wait()