Exception handling in communication protocols
SIGCOMM '83 Proceedings of the eighth symposium on Data communications
The distributed V kernel and its performance for diskless workstations
SOSP '83 Proceedings of the ninth ACM symposium on Operating systems principles
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The design of a distributed I/O system is described. The system is distributed in being implemented by server processes, client processes and a message communication mechanism between them. Data transfer between processes is achieved using a ``connectionless'''' object-based protocol. The concept of \underline{file} is generalized to that of a \underline{view} of an object or activity managed by a server. This allows many objects, including application-defined objects, to be viewed or accessed within the program I/O paradigm. Files are instantiated as \underline{file instance} objects to allow access to the associated data. Conventional byte-stream program input/output facilities are supported by a subroutine library which makes the message-based implementation transparent to applications.