pSOSystem System Calls - Read

pSOS+ System Calls q_send
Notes
See Also
Hex Mnemonic Description
0x3A ERR_VARQ Queue is variable length.
0x65 ERR_STALEID Object's node has failed.
1. If the caller is a task, it may be preempted as a result of this call.
2. q_send() sends a message to an ordinary message queue. Use q_vsend() to
send a message to a variable length message queue.
Multiprocessor Considerations
1. If qid identifies a global queue residing on another processor node, the local
kernel will internally make an RSC to that remote node to post the input
message to that queue.
2. If a task awakened by this call does not reside on the local node, the local kernel
will internally pass the message to the task's node of residence, whose pSOS+m
kernel will ready the task and give it the relayed message. Thus, a q_send()
call, whether it is on the local or a remote queue, may cause pSOS+m activities
on another processor node.
Callable From
■ Task.
■ ISR, if the target queue is local to the node from which the q_send() call is
made.
■ KI, if the target queue is local to the node from which the q_send() call is
made.
■ Callout, if the target queue is local to the node from which the q_send() call is
made.
q_broadcast, q_receive, q_urgent, q_vsend
pSOSystem System Calls 1-85
1