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streaming_child.py
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/
streaming_child.py
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# http://twistedmatrix.com/documents/current/core/examples/stdin.py
# http://twistedmatrix.com/documents/current/api/twisted.internet.stdio.StandardIO.html
# http://twistedmatrix.com/documents/current/core/examples/#auto10
# http://twistedmatrix.com/trac/ticket/4387
# http://stackoverflow.com/questions/10077745/twistedweb-on-multicore-multiprocessor
# http://stackoverflow.com/questions/1006289/how-to-find-out-the-number-of-cpus-in-python
# https://pypi.python.org/pypi/affinity
import os
import choosereactor
from twisted.internet import reactor, protocol, stdio
class StreamingClientProtocol(protocol.Protocol):
def loop(self):
msg = "%d %d\n" % (self.octetsReceived, self.octetsReceived - self.octetsReceivedLast)
self.octetsReceivedLast = self.octetsReceived
self.transport.write(msg)
reactor.callLater(1, self.loop)
def connectionMade(self):
try:
pid = os.getpid()
except:
pid = None
try:
ppid = os.getppid()
except:
ppid = None
self.enableFullDuplex = False
self.octetsReceived = 0
self.octetsReceivedLast = 0
if not self.enableFullDuplex:
msg = "Child PID %s, Parent PID %s\n" % (pid, ppid)
self.transport.write(msg)
self.transport.write("Child is using Twisted reactor class %s" % str(reactor.__class__))
self.loop()
def dataReceived(self, data):
self.octetsReceived += len(data)
if self.enableFullDuplex:
self.transport.write(data)
def connectionLost(self, reason):
reactor.stop()
if __name__ == '__main__':
proto = StreamingClientProtocol()
stdio.StandardIO(proto)
reactor.run()