Книга: Distributed operating systems

9.6.5. Implementation of COOL

9.6.5. Implementation of COOL

The COOL subsystem runs on top of the Chorus microkernel, just like the UNIX one. It consists of a process that implements the COOL base and a COOL generic runtime system that is linked with every COOL program (along with the language library), as shown in Fig. 9-26. This design allows COOL processes to make calls to the COOL subsystem, while at the same time UNIX processes make calls to the UNIX subsystem, without the two interfering. This modularity is a direct result of the microkernel design, and holds for Amoeba and Mach as well, of course.


Fig. 9-26. Implementation of COOL.

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