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Soft Modularity Enforced modularity –Client / Service
Name mapping: - Table - Search gcc f 1 0 … f n 0 Linkerexec
gcc f 1 0 … f n 0 D iDiiDi iUiiUi U D D D i U (U U i ) – D – D
Procedure Contract Stack Discipline SP 1) Callee corrupts stack. 2) Callee crashes Fate sharing
Solution 1: Client / Service Client Service args, procedure Validate msg Unmarshall Run
- Modular - Enforced - Comm. Path messages Watchdog Timer - Trusted intermediary - Clients get enforce modularity
Implementing c/s org: - Remote Procedure Call (RPC) - Sun RPC - XML RPC SOAP
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