Process Initiation and Startup Operations

• enlist: Start a new process
• init: Initialize CDS
• mkcntxt:  Add cell context
• rmcntxt:  Delete cell context
• myinfo: Get info about who I am

Region Operations

• rgalloc: Allocate region in Comm Heap
• rgrealloc: Shrink or enlarge region in Comm Heap (without copy)
• rgfree: Free region in Comm Heap
• rgmod: Inform CDS1 of impending region modification
• rglen: Return length of region

Communication Operations

• enq: Enqueue a region into cell
• benq:  Enqueue a region into a cell only if deq pending
• write: Write a region into cell
• deq: Dequeue a region from cell
• read: Read first region from cell
• zap: Destroy all regions in cell
• enqm: Enqueue a region to multiple cells
• writem: Write a region to multiple cells
• ideq:  Non-blocking dequeue region from cell
• iread:  Non-blocking read region from cell
• ibenq:  Non-blocking enqueue a region only if deq pending
• wait:  Wait for non-blocking operation to complete (and/or cancel)
• waitm:  Wait for any non-blocking operation to complete

Copying/Translation Operations

• copyfm: Copy data from a region to user address space while performing translation
• copyto: Copy data to a region from user address space while performing translation
• copytofm:  Copy data to a region from another region while performing translation
• typlen: Return number of bytes which would be copied by a copy descriptor
• transtab: Return translation table to translate between two processes
• type:  Parse textual CDS type into internal (integer sequence) form

Message Passing Operations ("Macros")

• send:  Send message
• recv:  Receive message
• sendx:  Send message, destroying old
• recvx:  Receive message, without removing from queue
• bsend:  Send message only if deq pending
• ibsend:  Non-blocking send of message only if deq pending
• irecvx:  Non-blocking receive of message w/o removing
• irecv:  Non-blocking receive of message

Shared Memory Operations ("Macros")

• acqwl:  Acquire write lock
• rlswl:  Release write lock
• acqrl:  Acquire read lock
• rlsrl:  Release read lock
• wl2rl:  Convert write lock to read lock
• iacqrl:  Non-blocking acquire read lock
• iacqwl:  Non-blocking acquire write lock

Handler Operations

• hdlr: Assign a water-mark and handler to a cell
• setpri: Alter the priority of the current handler or mainline
• allow: Allow pending handler requests to be serviced

Many-to-Many Operations

• rb:  Reduce and/or broadcast
• tpose:  Inter-process transpose
• irb:  Non-blocking reduce and/or broadcast
• itpose:  Non-blocking inter-process transpose