Operating System Concepts with Java by Abraham Silberschatz

By Abraham Silberschatz

* re-creation of the bestseller presents readers with a transparent description of the recommendations that underlie working platforms* makes use of Java to demonstrate many rules and comprises a variety of examples that pertain particularly to well known working structures reminiscent of UNIX, Solaris 2, home windows NT and XP, Mach, the Apple Macintosh OS, IBM's OS/2 and Linux* variety is much more hands-on than the former version, with large programming examples written in Java and C* New assurance contains contemporary advances in home windows 2000/XP, Linux, Solaris nine, and Mac OS X* particular case stories of home windows XP and Linux provide readers complete assurance of 2 very hot working platforms* additionally to be had from an analogous authors, the hugely winning working approach suggestions, 6th version (0-471-25060-0)

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Extra resources for Operating System Concepts with Java

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A user program, or the operating system itself, may request data transfer. The operating system finds a buffer (an empty buffer for input or a full buffer for output) from a pool of buffers for the transfer. ) Next, a portion of the operating system called a device driver sets the DMA controller registers to use appropriate source and destination addresses and transfer length. The DMA controller is then instructed to start the I/O operation. While the DMA controller is performing the data transfer, the CPU is free to perform other tasks.

ROM is located on nonvolatile storage devices that retain their contents even in the case of electric outage; most other types of memory are volatile. Most advanced operating-system features are absent too, since they tend to separate the user from the hardware, and that separation results in uncertainty about the amount of time an operation will take. For instance, virtual memory (Chapter 10) is almost never found on real-time systems. Therefore, hard real-time systems conflict with the operation of time-sharing systems, and the two cannot be mixed.

Blade servers are a recent development in which multiple processor boards, I/O boards, and networking boards can be placed in the same chassis. The difference between these and traditional multiprocessor systems is that each blade processor board boots independently and runs its own operating system. 3. Increased reliability. If functions can be distributed properly among several processors, then the failure of one processor will not halt the system, only slow it down. If we have ten processors and one fails, then each of the remaining nine processors must pick up a share of the work of the failed processor.

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