本文整理汇总了Python中multiprocessing.connection.Connection类的典型用法代码示例。如果您正苦于以下问题：Python Connection类的具体用法？Python Connection怎么用？Python Connection使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Connection类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: setup_device
def setup_device(cls, ctrl_connection: Connection, device_identifier):
ret = usrp.open(device_identifier)
ctrl_connection.send("OPEN:" + str(ret))
success = ret == 0
if success:
device_repr = usrp.get_device_representation()
ctrl_connection.send(device_repr)
return success示例2: setup_device
def setup_device(cls, ctrl_connection: Connection, device_identifier):
ret = hackrf.setup(device_identifier)
msg = "SETUP"
if device_identifier:
msg += " ({})".format(device_identifier)
msg += ": "+str(ret)
ctrl_connection.send(msg)
return ret == 0示例3: shutdown_device
def shutdown_device(cls, ctrl_conn: Connection):
logger.debug("HackRF: closing device")
ret = hackrf.close()
ctrl_conn.send("CLOSE:" + str(ret))
ret = hackrf.exit()
ctrl_conn.send("EXIT:" + str(ret))
return True示例4: RawSocketHandler
class RawSocketHandler(socketserver.BaseRequestHandler):
def setup(self):
registry.append(self)
def handle(self):
self.conn = Connection(self.request.detach())
while self.conn._handle:
try:
obj = json.loads(self.conn.recv_bytes().decode('utf-8'))
except EOFError:
break
if obj['type'] == 'message':
bus.post(nt_from_dict(Message, obj['message'], None))
self.conn.send_bytes(json.dumps({'ret': True}).encode('utf-8'))
elif obj['type'] == 'request':
m = bus.post_sync(nt_from_dict(Message, obj['message'], None))
if m:
ret = {"ret": True, "response": m._asdict()}
else:
ret = {"ret": False, "response": None}
self.conn.send_bytes(json.dumps(ret).encode('utf-8'))
def send(self, msg):
if isinstance(msg, Message):
ret = {"type": "message", "message": msg._asdict()}
else:
ret = {"type": "response", "response": msg._asdict()}
self.conn.send_bytes(json.dumps(ret).encode('utf-8'))
def finish(self):
registry.remove(self)
def close(self):
self.conn.close()示例5: prepare_sync_send
def prepare_sync_send(cls, ctrl_connection: Connection):
try:
cls.pyaudio_stream = cls.pyaudio_handle.open(format=pyaudio.paFloat32,
channels=2,
rate=cls.SAMPLE_RATE,
output=True)
ctrl_connection.send("Successfully started pyaudio stream")
return 0
except Exception as e:
logger.exception(e)
ctrl_connection.send("Failed to start pyaudio stream")示例6: setup_device
def setup_device(cls, ctrl_connection: Connection, device_identifier):
ret = limesdr.open()
ctrl_connection.send("OPEN:" + str(ret))
limesdr.disable_all_channels()
if ret != 0:
return False
ret = limesdr.init()
ctrl_connection.send("INIT:" + str(ret))
return ret == 0示例7: prepare_sync_receive
def prepare_sync_receive(cls, ctrl_connection: Connection):
try:
cls.pyaudio_stream = cls.pyaudio_handle.open(format=pyaudio.paFloat32,
channels=2,
rate=cls.SAMPLE_RATE,
input=True,
frames_per_buffer=cls.CHUNK_SIZE)
ctrl_connection.send("Successfully started pyaudio stream")
return 0
except Exception as e:
logger.exception(e)
ctrl_connection.send("Failed to start pyaudio stream")示例8: generate_data
def generate_data(connection: Connection, num_samples=32768):
frequency = 0.1
divisor = 200
pos = 0
while True:
result = np.zeros(num_samples, dtype=np.complex64)
result.real = np.cos(2 * np.pi * frequency * np.arange(pos, pos + num_samples))
result.imag = np.sin(2 * np.pi * frequency * np.arange(pos, pos + num_samples))
pos += num_samples
if pos / num_samples >= divisor:
frequency *= 2
if frequency >= 1:
frequency = 0.1
pos = 0
connection.send(result)示例9: device_send
def device_send(cls, ctrl_connection: Connection, send_config: SendConfig, dev_parameters: OrderedDict):
if not cls.init_device(ctrl_connection, is_tx=True, parameters=dev_parameters):
ctrl_connection.send("failed to start tx mode")
return False
if cls.ASYNCHRONOUS:
ret = cls.enter_async_send_mode(send_config.get_data_to_send)
else:
ret = cls.prepare_sync_send(ctrl_connection)
if ret != 0:
ctrl_connection.send("failed to start tx mode")
return False
exit_requested = False
buffer_size = cls.CONTINUOUS_TX_CHUNK_SIZE if send_config.continuous else cls.SYNC_TX_CHUNK_SIZE
if not cls.ASYNCHRONOUS and buffer_size == 0:
logger.warning("Send buffer size is zero!")
ctrl_connection.send("successfully started tx mode")
while not exit_requested and not send_config.sending_is_finished():
if cls.ASYNCHRONOUS:
try:
time.sleep(0.5)
except KeyboardInterrupt:
pass
else:
cls.send_sync(send_config.get_data_to_send(buffer_size))
while ctrl_connection.poll():
result = cls.process_command(ctrl_connection.recv(), ctrl_connection, is_tx=True)
if result == cls.Command.STOP.name:
exit_requested = True
break
if not cls.ASYNCHRONOUS:
# Some Sync send calls (e.g. USRP) are not blocking, so we wait a bit here to ensure
# that the send buffer on the SDR is cleared
time.sleep(0.75)
if exit_requested:
logger.debug("{}: exit requested. Stopping sending".format(cls.__class__.__name__))
if send_config.sending_is_finished():
logger.debug("{}: sending is finished.".format(cls.__class__.__name__))
cls.shutdown_device(ctrl_connection, is_tx=True)
ctrl_connection.close()示例10: setup_device
def setup_device(cls, ctrl_connection: Connection, device_identifier):
device_identifier = device_identifier if isinstance(device_identifier, str) else ""
try:
device_identifier = re.search("\[.*\]", device_identifier).groups(0)
except (IndexError, AttributeError):
pass
if not device_identifier:
_, uris = plutosdr.scan_devices()
try:
device_identifier = uris[0]
except IndexError:
ctrl_connection.send("Could find a connected PlutoSDR")
return False
ret = plutosdr.open(device_identifier)
ctrl_connection.send("OPEN ({}):{}".format(device_identifier, ret))
return ret == 0示例11: _process
def _process(self, conn_lru_dict: LRUCacheType[multiprocessing_connection.Connection, bool],
handle_pool: ThreadPool,
c_recv: multiprocessing_connection.Connection,
c_send: multiprocessing_connection.Connection,
wait=multiprocessing_connection.wait):
while True:
try:
for conn in wait(list(conn_lru_dict.keys()) + [c_recv]):
if conn == c_recv:
c_recv.recv_bytes()
continue
del conn_lru_dict[conn]
if not conn.closed:
handle_pool.spawn(self._handle, conn_lru_dict, conn, c_send)
else:
self.logger.debug("conn %s was closed" % conn)
except OSError as e:
if getattr(e, "winerror", 0) == 6:
continue
logging.exception("OSError")
except:
logging.exception("error")示例12: shutdown_device
def shutdown_device(cls, ctrl_conn: Connection, is_tx: bool):
if is_tx:
result = hackrf.stop_tx_mode()
ctrl_conn.send("STOP TX MODE:" + str(result))
else:
result = hackrf.stop_rx_mode()
ctrl_conn.send("STOP RX MODE:" + str(result))
result = hackrf.close()
ctrl_conn.send("CLOSE:" + str(result))
result = hackrf.exit()
ctrl_conn.send("EXIT:" + str(result))
return True示例13: setup_device
def setup_device(cls, ctrl_connection: Connection, device_identifier):
ctrl_connection.send("Initializing pyaudio...")
try:
cls.pyaudio_handle = pyaudio.PyAudio()
ctrl_connection.send("Initialized pyaudio")
return True
except Exception as e:
logger.exception(e)
ctrl_connection.send("Failed to initialize pyaudio")示例14: handle
def handle(self):
self.conn = Connection(self.request.detach())
while self.conn._handle:
try:
obj = json.loads(self.conn.recv_bytes().decode('utf-8'))
except EOFError:
break
if obj['type'] == 'message':
bus.post(nt_from_dict(Message, obj['message'], None))
self.conn.send_bytes(json.dumps({'ret': True}).encode('utf-8'))
elif obj['type'] == 'request':
m = bus.post_sync(nt_from_dict(Message, obj['message'], None))
if m:
ret = {"ret": True, "response": m._asdict()}
else:
ret = {"ret": False, "response": None}
self.conn.send_bytes(json.dumps(ret).encode('utf-8'))示例15: init_device
def init_device(cls, ctrl_connection: Connection, is_tx: bool, parameters: OrderedDict):
if not cls.setup_device(ctrl_connection, device_identifier=parameters["identifier"]):
return False
limesdr.enable_channel(True, is_tx, parameters[cls.Command.SET_CHANNEL_INDEX.name])
limesdr.set_tx(is_tx)
for parameter, value in parameters.items():
cls.process_command((parameter, value), ctrl_connection, is_tx)
antennas = limesdr.get_antenna_list()
ctrl_connection.send("Current normalized gain is {0:.2f}".format(limesdr.get_normalized_gain()))
ctrl_connection.send("Current antenna is {0}".format(antennas[limesdr.get_antenna()]))
ctrl_connection.send("Current chip temperature is {0:.2f}°C".format(limesdr.get_chip_temperature()))
return True