PPT Slide

• InterProcess Communication (IPC)

  • Cooperating processes often need to send information between themselves
  • Two main “branches” of IPC - shared memory and message passing
  • SOS implements a simple message passing scheme using separate message queues (Figure 3.12) that permits any arbitrary connections between processes
  • Notice at this level the IPC occurs within the same machine and O/S (no networking)
  • A real world example: “man msgop” on xi

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