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, frame):
if len(frame) > self._max_frame_size:
raise NIC.FrameTooLarge()
while not self.fit(frame, self.obuffer_used):
mint.wait(0)
self._oframes.append(frame)
self.obuffer_used += len(frame)
def send(self, frame):
if len(frame) > self._max_frame_size:
raise NIC.FrameTooLarge()
while not self.fit(frame, self.obuffer_used):
mint.wait(0)
self._oframes.append(frame)
self.obuffer_used += len(frame)
def run(self):
out0, out1 = self.setup()
while True:
self.ports[1].send(out0.popleft())
self.ports[0].send(out1.popleft())
out0.append(self.ports[0].recv())
out1.append(self.ports[1].recv())
mint.wait(0)
def send(self, frame):
while True:
try:
self.oframes.put(frame, block=False)
break
except Queue.Full:
mint.wait(0)
continue
def recv(self):
while True:
try:
frame = self.iframes.popleft()
self.ibuffer_used -= len(frame)
return frame
except IndexError:
mint.wait(0)
def send(self, frame):
while True:
try:
self.oframes.put(frame, block=False)
break
except Queue.Full:
mint.wait(0)
continue
def recv(self):
while True:
try:
frame = self.iframes.popleft()
self.ibuffer_used -= len(frame)
return frame
except IndexError:
mint.wait(0)
def run(self):
out0, out1 = self.setup()
while True:
self.ports[1].send(out0.popleft())
self.ports[0].send(out1.popleft())
out0.append(self.ports[0].recv())
out1.append(self.ports[1].recv())
mint.wait(0)
def recv(self, n_bits):
bits = deque()
while len(bits) < n_bits:
try:
bit = self.nic.ibuffer.get(block=False)
bits.append(bit)
except Queue.Empty:
mint.wait(0)
return ''.join(map(str, bits))
def send(self, frame, block=True):
if len(frame) > self._max_frame_size:
raise NIC.FrameTooLarge()
if not block and not self.fit(frame, self.obuffer_used):
raise mint.exceptions.WouldBlock
while not self.fit(frame, self.obuffer_used):
mint.wait(0)
self._oframes.append(frame)
self.obuffer_used += len(frame)
def link_layer_sender(self):
while True:
if self.acked:
data = self.pull()
frame = self.NOT_ACK + data
self.nic.send(frame)
self.acked = False
else:
mint.wait(0)
def send(self, frame, block=True):
if len(frame) > self._max_frame_size:
raise NIC.FrameTooLarge()
if not block and not self.fit(frame, self.obuffer_used):
raise mint.exceptions.WouldBlock
while not self.fit(frame, self.obuffer_used):
mint.wait(0)
self._oframes.append(frame)
self.obuffer_used += len(frame)
def recv(self, n_bits):
bits = deque()
while len(bits) < n_bits:
try:
bit = self.nic.ibuffer.get(block=False)
bits.append(bit)
except Queue.Empty:
mint.wait(0)
return ''.join(map(str, bits))
def run(self):
while True:
self.pull_frame()
try:
obit = self.oframe.popleft()
except IndexError:
obit = 0
ibit = self.port.io(obit)
self.push_frame(ibit)
mint.wait(0)
def run(self):
while True:
self.pull_frame()
try:
obit = self.oframe.popleft()
except IndexError:
obit = 0
ibit = self.port.io(obit)
self.push_frame(ibit)
mint.wait(0)
def recv(self, block=True):
while True:
try:
frame = self.iframes.popleft()
self.ibuffer_used -= len(frame)
return frame
except IndexError:
if block:
mint.wait(0)
else:
raise mint.exceptions.WouldBlock
def recv(self, block=True):
while True:
try:
frame = self.iframes.popleft()
self.ibuffer_used -= len(frame)
return frame
except IndexError:
if block:
mint.wait(0)
else:
raise mint.exceptions.WouldBlock
def run(self):
while True:
if not self.oframe:
self.pull_frame()
try:
obit = self.oframe.popleft()
except IndexError:
obit = 0
self.port.send(obit)
mint.wait(0)
ibit = self.port.recv()
self.push_frame(ibit)
mint.wait(0)
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 sender(self):
while True:
if self.acked:
payload = self.master.pull()
header = self.build(
acking=False,
ack=0, # meaningless
seq=self.sending_seq)
self.frame = self.compose(header, payload)
self.servant.send(self.frame)
self.timer.start()
self.acked = False
else:
mint.wait(0)
def sender(self):
while True:
if self.acked:
payload = self.master.pull()
header = self.build(
acking=False,
ack=0, # meaningless
seq=self.sending_seq)
self.frame = self.compose(header, payload)
self.servant.send(self.frame)
self.timer.start()
self.acked = False
else:
mint.wait(0)
def sender(self):
while True:
while self.events:
e = self.events.popleft()
if e.type == RESEND:
self.servant.send(frame)
e.timer.start()
if self.allowed_to_send():
payload = self.master.pull()
header = self.build(seq=self.oseq)
frame = self.compose(header, payload)
self.servant.send(frame)
timer = self.timer(self.resend_timeout,
utils.Bunch(type=RESEND, frame=frame, acked=False))
self.oframes.append(utils.Bunch(seq=self.oseq, timer=timer))
self.oseq = (self.oseq + 1) & self.MAX_SEQ
else:
mint.wait(0)
def pop_from(buf):
while True:
try:
return buf.popleft()
except IndexError:
mint.wait()
def io(self, osymbol=None):
if osymbol is not None:
self.osymbol = osymbol
mint.wait(0)
return self.isymbol
def recver(self):
while True:
self.switch_frames()
mint.wait(0)
def recv(self):
while True:
try:
return self.iframes.get(block=False)
except Queue.Empty:
mint.wait(1)
def pull(self):
while True:
try:
return self.obuffer.popleft()
except IndexError:
mint.wait(0)
def recv(self):
while True:
try:
return self.iframes.get(block=False)
except Queue.Empty:
mint.wait(1)
def pop_from(buf):
while True:
try:
return buf.popleft()
except IndexError:
mint.wait()
def recver(self):
while True:
self.switch_frames()
mint.wait(0)
def io(self, osymbol=None):
if osymbol is not None:
self.osymbol = osymbol
mint.wait(0)
return self.isymbol