Xenomai 2 to 3 migration says "RTDM drivers implementing differentiated ioctl() support for both domains should serve all real-time only requests from ioctl_rt(), returning -ENOSYS for any unrecognized request, which will cause the adaptive switch to take place automatically to the ioctl_nrt() handler. The ioctl_nrt() should then implement all requests which may be valid from the regular Linux domain exclusively."
/* $Id$ */
digraph eoe {
node [fontname="Helvetica"]
edge [fontname="Helvetica",fontsize=12]
start [shape=point]
start -> query
query [label="Query all Mailboxes"]
query -> check_read
check_read [shape=diamond,label="Frames to read?"]
check_read -> unset_idle_read [label="yes"]
check_read -> check_idle_read [label="no"]
unset_idle_read [label="Reset idle flag"]
unset_idle_read -> read
read [label="Read next segment"]
read -> check_read_finished
check_read_finished [shape=diamond,label="Frame complete?"]
check_read_finished -> read [label="no"]
check_read_finished -> check_write [label="yes"]
check_idle_read [shape=diamond,label="Idle flag set?"]
check_idle_read -> set_idle_read [label="no"]
check_idle_read -> sleep_read [label="yes"]
set_idle_read [label="Set idle flag"]
set_idle_read -> check_write
sleep_read [label="Sleep"]
sleep_read -> check_write
check_write [shape=diamond,label="Frames to write?"]
check_write -> unset_idle_write [label="yes"]
check_write -> check_idle_write [label="no"]
unset_idle_write [label="Reset idle flag"]
unset_idle_write -> write
write [label="Write next segment"]
write -> check_write_finished
check_write_finished [shape=diamond,label="Frame complete?"]
check_write_finished -> check_read_remaining [label="yes"]
check_write_finished -> write [label="no"]
check_read_remaining [shape=diamond,label="Remaining segments to read?"]
check_read_remaining -> query [label="no"]
check_read_remaining -> read [label="yes"]
check_idle_write [shape=diamond,label="Idle flag set?"]
check_idle_write -> set_idle_write [label="no"]
check_idle_write -> sleep_write [label="yes"]
set_idle_write [label="Set idle flag"]
set_idle_write -> check_read_remaining
sleep_write [label="Sleep"]
sleep_write -> query
/*{rank=same; check_read; check_idle_read}
{rank=same; unset_idle_read; set_idle_read; sleep_read}
{rank=same; check_write; check_idle_write}
{rank=same; unset_idle_write; set_idle_write; sleep_write}*/
}