Transcription of OPERATING SYSTEMS MEMORY MANAGEMENT - WPI
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OPERATING SYSTEMS MEMORY MANAGEMENT - WPI
8: MEMORY Management1 Jerry BreecherOPERATING SYSTEMS MEMORY MANAGEMENT8: MEMORY Management2 What Is In This Chapter?Just as processes share the CPU, they also share physical MEMORY . This chapter is about mechanisms for doing that SYSTEM MEMORY Management8: MEMORY Management3 MEMORY MANAGEMENTJust as processes share the CPU, they also share physical MEMORY . This section is about mechanisms for doing that OF MEMORY USAGE:Calculation of an effective address Fetch from instruction Use index offsetExample: ( Here index is a pointer to an address )loop:load register, indexadd 42, registerstore register, indexinc indexskip_equal index, final_addressbranch continue ..8: MEMORY Management4 MEMORY MANAGEMENT The concept of a logical address spacethat is bound to a separate physical address spaceis central to proper MEMORY MANAGEMENT .
+ Operating system needed to check if routine is in processes’ memory address. ... If monitor can change in size, start user at high end and move back, OR use fence as base register that requires address binding at execution time. Add base register to every generated user address.
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