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for proprietary systems-each at considerable expense. Bal
needs and technology, Unix has been modified to provide a staggering number of different mechanisms for managing ob-The Mach operating system can be used as a system software kernel which can support a variety of operating jects and resources. In addition to pipes, Unix versions now system environments. Key elements of the Mach design support facilities… (More)
This paper describes an approach to Unix shared memory and memory mapped files currently in use at CMU under the Mach Operating System. It describes the rationale for Mach's memory sharing and file mapping primitives as well as their impact on other system components and on overall performance.