Com 212 intro to system programming book Theory



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com-212-introduction-to-system-programming-theory
9833 SS1 FISHERY LESSON NOTE
REMOTE LIBRARIES
Another solution to the library issue is to use completely separate executables (often in some lightweight form) and call them using a remote procedure call (RPC) over a network to another computer. This approach maximizes operating system reuse the code needed to support the library is the same code being used to provide application support and security for every other program. Additionally, such systems do not require the library to exist on the same machine, but can forward the requests over the network. The downside to such an approach is that every library call requires a considerable amount of overhead. RPC calls are much more expensive than calling a shared library which has already been loaded on the same machine.

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