Advanced Operating Systems   COMP9242 2002/S2

UNSW

Printer-Friendly Version Administration                - Notices - Course Intro - Consultations # On-line Survey (closed) - Survey Results   Work - Lectures - Milestone 0 - Project Admin - Project Spec - Project FAQ - Exam   Documentation - ASysT Lab - L4 source browser - Sulima ISA Simulator - R4x00 ISA Summary  - MIPS R4700 Reference - MIPS R4000 User Manual  - Network Driver - GT64111   Related Info - Aurema OS Prize - OS Hall of Fame   History - 2000 - 1999 - 1998   Staff - Gernot Heiser (LiC)

IPC System Call Overview One system call, variants accessible via separate C library entry points Client functions send() send a message (blocking) to a specific thread receive() ``closed'' receive from specific sender (might be interrupt)-- includes sleeping (if specify invalid sender) wait() ``open'' receive from any thread (incl. interrupt) call() send and wait for reply (usual ``RPC'' operation) reply_and_wait() send message and wait for any new message typical server operation send_deceiving() like send() but substituting sender ID reply_deceiving_and_wait()  like reply_and_wait() but substituting sender ID C bindings for chiefs Alternative bindings which return the ID of the intended destination in the case of redirection: chief_send()  identical to send_deceiving chief_wait()  like wait() but returns ID of intended destination chief_receive()  like receive() but returns ID of intended destination chief_call()  like call() but substitutes sender ID and returns ID of intended destination chief_reply_and_wait()  like reply_deceiving_and_wait() but returns ID of intended destination The ID of the intended destination supports transparent forwarding by chief.