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Operating Systems: Concurrent and Distributed Software Design by Tim Harris, Jean Bacon

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27.2. System structure

Figure 27.1 shows the overall system structure. The majority of operating system functions are provided within the executive running in privileged mode. The executive has components that implement virtual memory management, process management, I/O and the file system (including network drivers), inter-process communication and some security functions. Object management is generic, is used by all of these functions and is abstracted in a separate executive component.

Figure 27.1. Windows 2000 block diagram.

The executive builds on lower-level facilities provided by the kernel. For instance, the mechanics of storing and resuming ...

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