Sending and receiving async over multiprocessing.Pipe() in Python
I'm having some issues getting the Pipe.send to work in this code. What I would ultimately like to do is send and receive messages to and from the foreign process while its running in a fork. This is eventually going to be integrated into a pexpect loop for talking to interpreter processes.
from multiprocessing import Process, Pipe
from pexpect import spawn
class CockProc(Process):
def start(self):
self.process = spawn('coqtop', ['-emacs-U'])
def run(self, conn):
while True:
if not conn.poll():
cmd = conn.recv()
self.process.send(cmd)
self.process.expect('\<\开发者_StackOverflow社区/prompt\>')
result = self.process.before + self.process.after + " "
conn.send(result)
q, p = Pipe()
proc = CockProc()
proc.start()
proc.run(p)
res = q.recv()
command = raw_input(res + " ")
q.send(command)
res = q.recv()
parent_conn.send('OHHAI')
p.join()
`
This works, but might need some more work. Not sure how many of these i can create and loop over.
from multiprocessing import Process, Pipe
from pexpect import spawn
class CockProc(Process):
def start(self):
self.process = spawn('coqtop', ['-emacs-U'])
def run(self, conn):
if conn.poll():
cmd = conn.recv()
self.process.send(cmd + "\n")
print "sent comm"
self.process.expect('\<\/prompt\>')
result = self.process.before + self.process.after + " "
conn.send(result)
here, there = Pipe(duplex=True)
proc = CockProc()
proc.start()
proc.run(there)
while True:
if here.poll():
res = here.recv()
command = raw_input(res + " ")
here.send(command)
proc.run(there)
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