13.1. Styles of inter-process communication

The general theme of Part II is inter-process communication (IPC). In Chapter 9, Part II was introduced by considering system structure and the placement of processes within systems. We saw that it is often desirable for processes to share memory. For example, a server of many clients is implemented most conveniently as multiple server processes (or threads) sharing an address space.

Chapters 10, 11 and 12 developed the inter-process communication primitives that processes sharing memory might use when programmed in a high-level language. The underlying system primitives may be based on semaphores, event queues or eventcounts and sequencers, but the high-level language programmer need not be aware of ...

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