.TH SENDF 2 .SH NAME sendf \- send a (one-word) message to a process, forcing delivery .SH SYNOPSIS .nf .B int sendf(pid, msg) .B int pid; .B int msg; .fi .SH DESCRIPTION .I Sendf sends the one-word message .I msg to the process with id .I pid. A process may have at most one outstanding message that has not been received. .I Sendf returns SYSERR if process id \f2pid\f1 is invalid. Otherwise, it returns OK. .SH SEE ALSO receive(2), recvtim(2), recvclr(2), preceive(2), psend(2)