from lithops.multiprocessing import Pool, Semaphore, SimpleQueue, getpid
import time
def f(sem, q):
with sem:
pid = getpid()
ts = time.time()
msg = 'process: {} - timestamp: {}'.format(pid, ts)
q.put(msg)
time.sleep(3)
if __name__ == "__main__":
# inital value to 3
sem = Semaphore(value=3)
q = SimpleQueue()
n = 6
with Pool() as p:
p.map_async(f, [[sem, q]] * n)
for _ in range(n):
print(q.get())
import time
from lithops.multiprocessing import Pool, Barrier, SimpleQueue, current_process
def f(b, q):
b.wait()
pid = current_process().pid
ts = time.time()
msg = 'process: {} - timestamp: {}'.format(pid, ts)
q.put(msg)
if __name__ == "__main__":
q = SimpleQueue()
n = 4
barrier = Barrier(n)
with Pool() as p:
p.map_async(f, [[barrier, q]] * (n - 1)) # all - 1
print('Result queue empty:', q.empty())
time.sleep(3)
p.apply_async(f, [barrier, q])
for _ in range(n):
print(q.get())
from lithops.multiprocessing import Process, SimpleQueue
def f(q):
q.put([42, None, 'hello World'])
if __name__ == '__main__':
q = SimpleQueue()
p = Process(target=f, args=(q, ))
p.start()
print(q.get()) # prints "[42, None, 'hello']"
p.join()