By Abraham Silberschatz
ISBN-10: 1118063333
ISBN-13: 9781118063330
The 9th version of working approach thoughts maintains to conform to supply a pretty good theoretical origin for realizing working structures. This version has been up to date with extra huge assurance of the most up-tp-date themes and purposes, better conceptual insurance and extra content material to bridge the distance among innovations and real implementations. a brand new layout makes it possible for more uncomplicated navigation and complements reader motivation. extra end-of-chapter, routines, overview questions, and programming workouts support to additional toughen very important recommendations. WileyPLUS, together with a attempt financial institution, self-check workouts, and a scholar ideas guide, is additionally a part of the great help package deal.
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Additional info for Operating System Concepts
Sample text
The interrupt service routine executes; on completion, the CPU resumes the interrupted computation. 3. Interrupts are an important part of a computer architecture. Each computer design has its own interrupt mechanism, but several functions are common. The interrupt must transfer control to the appropriate interrupt service routine. The straightforward method for handling this transfer would be to invoke a generic routine to examine the interrupt information. The routine, in turn, would call the interrupt-specific handler.
7 A dual-core design with two cores placed on the same chip. 3 17 Clustered Systems Another type of multiprocessor system is a clustered system, which gathers together multiple CPUs. 2 in that they are composed of two or more individual systems—or nodes—joined together. Such systems are considered loosely coupled. Each node may be a single processor system or a multicore system. We should note that the definition of clustered is not concrete; many commercial packages wrestle to define a clustered system and why one form is better than another.
We emphasize that a program by itself is not a process. 7 Memory Management 25 is an active entity. A single-threaded process has one program counter specifying the next instruction to execute. ) The execution of such a process must be sequential. The CPU executes one instruction of the process after another, until the process completes. Further, at any time, one instruction at most is executed on behalf of the process. Thus, although two processes may be associated with the same program, they are nevertheless considered two separate execution sequences.
Operating System Concepts by Abraham Silberschatz
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