def getprime(nbits, poolsize):
'''Returns a prime number that can be stored in 'nbits' bits.
Works in multiple threads at the same time.
>>> p = getprime(128, 3)
>>> rsa.prime.is_prime(p-1)
False
>>> rsa.prime.is_prime(p)
True
>>> rsa.prime.is_prime(p+1)
False
>>> from rsa import common
>>> common.bit_size(p) == 128
True
'''
(pipe_recv, pipe_send) = mp.Pipe(duplex=False)
# Create processes
procs = [mp.Process(target=_find_prime, args=(nbits, pipe_send))
for _ in range(poolsize)]
[p.start() for p in procs]
result = pipe_recv.recv()
[p.terminate() for p in procs]
return result
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