13.10. Summary
In Chapter 9 we considered system structures based on shared memory and no shared memory and established where each type of structure might occur in a system. We considered how processes should be placed and used in both kinds of system. In this chapter we have taken the same theme and have extended the discussion to inter-process communication.
We have seen that any task that can be accomplished using the IPC facilities of one style of system can also be accomplished with the IPC facilities of the other style of system. This has been called the duality property of the two styles of system structure when a mapping between specific primitives is applied.
We have already studied how concurrent processes can use shared data to achieve ...
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