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Conference Papers Year : 1986

SOS: a distributed Object-Oriented Operating System

Marc Shapiro


We present SOS, the operating system for SOMIW (Secure Open Multimedia Integrated Workstation). The SOS is object-structured; all services and communication is expressed in terms of passive objects with procedural interfaces.Resources are accessed by clients via a local (to the client) proxy object. The possibly distributed or group nature of the resource is hidden behind the proxy interface.The service and its representatives form a single distributed object (or group); any communication protocol is hidden, as part of its internal representation. The proxy is a programmable capability and may be different per-client. This approach also allows the programmer of a resource to cope with the heterogeneous nature of its clients.The OS is based on a kernel which implements contexts, processes, memory segments and object descriptors. Object invocation normally occurs within one context, but may trap transparently into an other context.


Dates and versions

hal-01248236 , version 1 (24-12-2015)



Marc Shapiro. SOS: a distributed Object-Oriented Operating System. SIGOPS European Workshop on ``Making Distributed Systems Work'', 1986, Amsterdam, the, Netherlands. ⟨10.1145/503956.503997⟩. ⟨hal-01248236⟩


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