rosmaster zombie

edit

I know zombie node can exist but is zombie master possible too?

With the following step, I keep getting rosgraph.masterapi.Master instance even after I stop master, which is not my intent. What's wrong?

1. Run master (eg. by roscore)
2. Run $ rosrun turtlesim turtlesim_node
3. Run the python script I cite at the bottom. It keeps printing the instance info.
4. Stop master. Surprisingly, print continues with the same content.

After 3, both 2 processes with the names roscore and rosmaster --core don't seem to be running. Stopping turtlesim when master is already stopped doesn't change anything. I suspect rosmaster could be sustaining even after it's shut down?

Code:

#!/usr/bin/env python
import time

import rosgraph
import rosnode


def prv_master_rosnode():
    master = rosgraph.Master('/rosnode')
    print 'master={}'.format(master)
    rosn = rosnode.get_api_uri(master, '/turtlesim')
    print 'rosnode obj={}'.format(rosn)


def prv_master_rosnode_iterate():
    while True:
        prv_master_rosnode()
        time.sleep(1)


if __name__ == '__main__':
    prv_master_rosnode_iterate()

Printed:

master=<rosgraph.masterapi.Master object at 0x7fc400553fd0>
rosnode obj=http://ramenrobot:52240/
master=<rosgraph.masterapi.Master object at 0x7fc400553fd0>
rosnode obj=http://ramenrobot:52240/
master=<rosgraph.masterapi.Master object at 0x7fc400553fd0>
rosnode obj=http://ramenrobot:52240/
: (never changes, never stops)

• ros-groovy-rosnode 1.9.44-0quantal-20130326-0855-+0000
• ros-groovy-rosgraph 1.9.44-0quantal-20130325-0834-+0000