def recv(self, nbits=0):
'''
Retrieve `nbits` bits from the hardware.
If `nbits` > 0, return the bits retrieved. If there are
no enough bits currently available, `recv` will block until
enough bits become available.
If `nbits` is 0, return a iterable which when iterated over
will retrieve 1 bit at a time. Equivalent to:
recv()
while True:
yield recv(1)
'''
if not nbits:
return iter(functools.partial(self.recv, 1), None)
while True:
while True:
try:
self.ebuffer += self.iqueue.get(block=False)
except Queue.Empty:
break
if len(self.ebuffer) >= nbits:
ret, self.ebuffer = utils.split_at(self.ebuffer, nbits)
return ret
else:
mint.wait(0)
continue
def _send(self):
# fetch from entity & send to peer port at specified rate
self.obuffer += self.fetch_from(self.e2p_queue, block=False)
#print '{} {}\n'.format(self, self.obuffer)
bits, self.obuffer = utils.split_at(self.obuffer, self.rate)
if bits:
self.p2p_queue.put(bits)
def _send(self):
# fetch from entity & send to peer port at specified rate
self.obuffer += self.fetch_from(self.e2p_queue, block=False)
#print '{} {}\n'.format(self, self.obuffer)
bits, self.obuffer = utils.split_at(self.obuffer, self.rate)
if bits:
self.p2p_queue.put(bits)
def transfer(self, port1, port2):
bit = port1.recv(1)
#import random
#bit = '1' if random.randint(0, 1) else '0'
self.pipes[port1] += bit
bits, self.pipes[port1] = utils.split_at(self.pipes[port1], 1)
port2.send(bits)
def collect_bits(self, port):
# TODO
# self.data += ibuffer.take_bytes()
#
# collect bits at multiples of 8
bits, port.ibuffer = utils.split_at(port.ibuffer, len(port.ibuffer) // 8 * 8)
if bits:
self.data += utils.unbitify(bits)
def get_bit(self, port):
if port.ibuffer:
self.pipes[port] += port.ibuffer
port.ibuffer = ''
else:
self.pipes[port] += self.noise_bit()
bit, self.pipes[port] = utils.split_at(self.pipes[port], 1)
return bit
def get_bit(self, port):
if port.ibuffer:
self.pipes[port] += port.ibuffer
port.ibuffer = ''
else:
self.pipes[port] += self.noise_bit()
bit, self.pipes[port] = utils.split_at(self.pipes[port], 1)
return bit
def collect_bits(self, port):
# TODO
# self.data += ibuffer.take_bytes()
#
# collect bits at multiples of 8
bits, port.ibuffer = utils.split_at(port.ibuffer,
len(port.ibuffer) // 8 * 8)
if bits:
self.data += utils.unbitify(bits)
def collect_bits(self, port):
# TODO
# self.data += ibuffer.take_bytes()
#
# collect bits at multiples of 8
bits, port.ibuffer = utils.split_at(port.ibuffer, len(port.ibuffer) // 8 * 8)
if bits:
self.data += utils.unbitify(bits)
print '{} Collected: {}'.format(self, utils.format_bytes(self.data))
raw_input()
def recv(self, nbits=None, block=True):
if block:
if nbits is None:
raise Exception('blocking recv must specify the number of bits')
while len(self.entity_buffer) < nbits:
self.entity_buffer += self.fetch_from(self.p2e_queue, block=True)
bits, self.entity_buffer = utils.split_at(self.entity_buffer, nbits)
return bits
else:
self.entity_buffer += self.fetch_from(self.p2e_queue, block=False)
bits, self.entity_buffer = self.entity_buffer, ''
return bits
def handoff(self):
if not self.peer:
return
sent, self.obuffer = utils.split_at(self.obuffer,
min(self.rate, self.peer.rate))
self.peer.ibuffer += sent
# TODO
# this ought to be implemented like this:
# buffer as a descriptor
# when altered, emit the signal
# so bit_arrive then is no need to be emitted here
# writting the ugly self.peer... etc.
self.peer.bit_arrive(self.peer)
def recv(self, nbits):
while True:
while True:
try:
self.ebuffer += self.iqueue.get(block=False)
except Queue.Empty:
break
if len(self.ebuffer) >= nbits:
ret, self.ebuffer = utils.split_at(self.ebuffer, nbits)
return ret
else:
mint.wait(0)
continue
def recv(self, nbits=None, block=True):
if block:
if nbits is None:
raise Exception(
'blocking recv must specify the number of bits')
while len(self.entity_buffer) < nbits:
self.entity_buffer += self.fetch_from(self.p2e_queue,
block=True)
bits, self.entity_buffer = utils.split_at(self.entity_buffer,
nbits)
return bits
else:
self.entity_buffer += self.fetch_from(self.p2e_queue, block=False)
bits, self.entity_buffer = self.entity_buffer, ''
return bits
def get(self, nbits=None):
if not nbits:
nbits = len(self.ibuffer)
ret, self.ibuffer = utils.split_at(self.ibuffer, nbits)
return ret
def output(self):
self.osymbol, self.obuffer = utils.split_at(self.obuffer, 1)
def transfer(self, port1, port2):
data = port1.recv(block=False)
self.pipes[port1] += data or '0' * self.rate
bits, self.pipes[port1] = utils.split_at(self.pipes[port1], self.rate)
port2.send(bits)
def transfer(self, port1, port2):
self.pipes[port1] += port1.recv(1)
bits, self.pipes[port1] = utils.split_at(self.pipes[port1], 1)
port2.send(bits)
def recv(self, nbits=0):
if not nbits:
return iter(functools.partial(self.recv, 1), '')
bits, self.bits = utils.split_at(self.bits, nbits)
return bits
def get(self, nbits=None):
if not nbits:
nbits = len(self.ibuffer)
ret, self.ibuffer = utils.split_at(self.ibuffer, nbits)
return ret
def _recv(self):
# fetch from peer port & send to entity at specified rate
self.ibuffer = self.fetch_from(self.peer.p2p_queue, block=False)
bits, self.ibuffer = utils.split_at(self.ibuffer, self.rate)
if bits:
self.p2e_queue.put(bits)
def _recv(self):
# fetch from peer port & send to entity at specified rate
self.ibuffer = self.fetch_from(self.peer.p2p_queue, block=False)
bits, self.ibuffer = utils.split_at(self.ibuffer, self.rate)
if bits:
self.p2e_queue.put(bits)
def output(self):
bits, self.obuffer = utils.split_at(self.obuffer, 1)
self.osymbol = bits
self.obits += bits
def recv(self, nbytes):
while len(self.data) < nbytes:
yield self.port.bit_arrive.event
ret, self.data = utils.split_at(self.data, nbytes)
mint.ret(ret)
def transfer(self, port1, port2):
self.pipes[port1] += port1.recv(1)
bits, self.pipes[port1] = utils.split_at(self.pipes[port1], 1)
port2.send(bits)
def transfer(self, port1, port2):
data = port1.recv(block=False)
self.pipes[port1] += data or '0' * self.rate
bits, self.pipes[port1] = utils.split_at(self.pipes[port1], self.rate)
port2.send(bits)
def recv(self, nbytes):
while len(self.data) < nbytes:
yield self.port.bit_arrive.event
ret, self.data = utils.split_at(self.data, nbytes)
mint.ret(ret)
def recv(self, nbits=0):
if not nbits:
return iter(functools.partial(self.recv, 1), '')
bits, self.bits = utils.split_at(self.bits, nbits)
return bits
