Suppose a variant of UNIX provides a system call that returns a pointer to a block of
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Suppose a variant of UNIX provides a system call that returns a pointer to a block of memory in the system address space capable of being read from and written to by any process. Explain how a UNIX user process could use such a facility to define a block of sharable memory to be used by two or more of its children. Assume the children have already been exec-ed at the time the block is set up by the parent.
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Assume that the system call is of the form char smallocunsigned and that it returns a pointer to a b...View the full answer
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