def host(app, bind_to):
acceptor = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
acceptor.bind(bind_to)
acceptor.listen(1024)
process_info = dict(
name='Parent',
master_pid=os.getpid()
)
@atexit.register
def on_exit():
acceptor.close()
print "{0} {1} has left the building.".format(process_info['name'], os.getpid())
for i in range(30):
@fork
def child():
process_info['name'] = 'Child'
parent_pid = process_info['master_pid']
@trap(signal.SIGINT)
def exit_when_interrupted():
sys.exit()
server_name, server_port = get_server_address(acceptor)
acceptor.settimeout(0.0)
rlist = [acceptor]
server = Server(app, {
'multicor.process_name': process_info['name']
})
while True:
for ready_sock in rlist:
try:
sock, client_address = ready_sock.accept()
except IOError as ex:
if ex.errno not in (errno.EAGAIN, errno.ECONNABORTED): raise
else:
# TODO: handle errors!
sock.settimeout(None)
with closing(sock):
WSGIRequestHandler(sock, client_address, server)
# Quit if we see that our parent is gone.
if os.getppid() != parent_pid: return
try:
rlist, wlist, xlist = select([acceptor], [], [], 5.0)
except IOError as ex:
if ex.errno == errno.EINTR:
rlist = [acceptor]
elif ex.errno == errno.EBADF:
return
else:
raise
print "Forked child: {0}".format(child.pid)
@trap(signal.SIGINT)
def exit_parent():
print "\nbailing"
sys.exit()
wait_all()
for i in range(3):
@fork
def child():
global name
name = "Child"
@trap(signal.SIGINT)
def exit_when_interrupted():
sys.exit()
done = False
while not done:
sock, addr = acceptor.accept()
sock.sendall("Child {0} echo> ".format(os.getpid()))
with contextlib.closing(sock.makefile('rb')) as sock_input:
message = sock_input.readline()
done = message.strip().lower() == 'quit'
sock.sendall(message)
sock.close()
print "Child {0} echo'd: {1}".format(os.getpid(), message.strip())
print "Forked child: {0}".format(child.pid)
@trap(signal.SIGINT)
def exit_parent():
print "\nbailing"
sys.exit()
wait_all()