def get_a_manager(threadPool_settings=None):
global __singleton_manager<EOL>if __singleton_manager is None:<EOL><INDENT>def _thread_entry():<EOL><INDENT>if prctl:<EOL><INDENT>prctl.set_name('<STR_LIT>')<EOL><DEDENT>m.run()<EOL>l.info('<STR_LIT>')<EOL><DEDENT>l = logging.getLogger('<STR_LIT>')<EOL>l.info("<STR_LIT>")<EOL>m = Manager(logging.getLogger('<STR_LIT>'))<EOL>if threadPool_settings:<EOL><INDENT>m.update_instance('<STR_LIT>', threadPool_settings)<EOL><DEDENT>threading.Thread(target=_thread_entry).start()<EOL>m.running_event.wait()<EOL>__singleton_manager = m<EOL><DEDENT>return __singleton_manager<EOL>
On first call, creates and returns a @mirte.core.Manager.  On
        subsequent calls, returns the previously created instance.

        If it is the first call, it will initialize the threadPool
        with @threadPool_settings.