- !? PID MSG #!optional TIMEOUT DEFAULTprocedure
Send msg to process pid and wait for a reply.
The actual message sent to pid is (list (self) tag msg).
This procedure wait for a reply of the form (list tag reply) and returns reply.
Send msg to process pid and wait for a reply.
The actual message sent to pid is (list (self) tag msg).
This procedure wait for a reply of the form (list tag reply) and returns reply.