mbx — Apollo

MBX -- Mailbox Manager (IPC) support information -- 83/08/01

  The MBX (mailbox) manager calls implement a user-callable
  interprocess communication (IPC) facility. This facility is based
  on a server/client model of interprocess communication.

  The server creates a named MBX file and in so doing declares
  his intention to handle incoming service requests.  Through
  this file, the server may control up to 255 full-duplex
  conversations concurrently.  Prospective clients of a particular
  service supply the MBX package with the name of the MBX file
  that the target server has created.  If the server agrees to
  provide service, it accepts the conversation and a full-duplex
  communications channel is opened between them.

  Before INTER-NODE interprocess communication may be used, each
  participating node must initiate the MBX_HELPER program, either
  in a normal process running the Shell or via the Display Manager
  command CPO (CREATE_PROCESS_ONLY).  The MBX program is found in:

              /SYS/MBX/MBX_HELPER

  For information about the progam call interface to the MBX manager,
  type:

              HELP SYSCALLS MBX
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