Operating Systems Design and Implementation, Third Edition phần 1 doc

... 2006 Print ISBN -10 : 0 -13 -14 2938-8 Print ISBN -13 : 978-0 -13 -14 2938-3 eText ISBN -10 : 0 -13 -18 59 91- 9 eText ISBN -13 : 978-0 -13 -18 59 91- 3 Pages: 10 80 Copyright Preface Chapter 1. Introduction Section 1. 1. What Is an Operating System? Section 1. 2. ... What Is an Operating System? Section 1. 2. History of Operating Systems Section 1. 3. Operating System...

Ngày tải lên: 12/08/2014, 22:21

... request to handle next. Using FCFS, it would go next to cylinder 1, then to 36, and so on. This algorithm would require arm motions of 10 , 35, 20, 18 , 25, and 3, respectively, for a total of 11 1 cylinders. Alternatively, ... request comes in to read a block on cylinder 11 . While the seek to cylinder 11 is in progress, new requests come in for cylinders 1, 36, 16 , 34, 9, and...

Ngày tải lên: 12/08/2014, 22:21

... */ 16 110 console_t *cons = tp->tty_priv; 16 111 16 112 out_char(cons, c); 16 113 flush(cons); 16 114 } 16 116 /*===========================================================================* 16 117 ... m1_i2 17 712 #define stack_ptr m1_p2 17 713 #define status m1_i1 17 714 #define usr_id m1_i1 17 715 #define request m2_i2 17 716 #define taddr m2_l1 17 717 #define data m2_l2 1...

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... sender and a timestamp added by the kernel. Sometimes this is all that is necessary. For instance, the keyboard uses a notify call when one of the function keys (F1 to F12 and shifted F1 to F12) ... manager and the file system will be found in any operating system. The information server (IS) handles 2 2 Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com 12 1...

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... elements of irq_handlers. Put_irq_handler adds an entry to one of these lists. 51 51 Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com instance, the user command ps needs to ... of possible sources and destinations, and the call may require either sending or receiving or both sending and receiving a message. A number of tests must be made. On lines 7480 and...

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... by the operating system. Even if the hardware has been designed with, for example, 512 -byte pages, the operating system can easily regard pages 0 and 1, 2 and 3, 4 and 5, and so on, as 1- KB pages ... cache, the operating system can substantially reduce the number of TLB misses. [Page 395] 11 11 Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com 6 6...

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... the first clock tick, the R bits are 011 1 (page 0 is 0, the rest are 1) . At subsequent clock ticks, the values are 10 11, 10 10, 11 01, 0 010 , 10 10, 11 00, and 00 01. If the aging algorithm is used with ... D, and F in that order. Their respective load times were 18 , 23, 5, 7, 32, 19 , 3, and 8. Their reference bits are 1, 0, 1, 1, 0, 1, 1, and 0 and their modifie...

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... if the current file position is 600 and 10 24 bytes have been requested, the request is split into two parts, for 600 to 10 23, and for 10 24 to 16 23 (assuming 1- KB blocks). For each of these pieces ... size is determined, for chunk sizes of 6, 2, and 1 bytes, respectively. The actual calculation is done on lines 2 515 9 to 2 516 9. 19 19 Simpo PDF Merge and Split Unregist...

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... September 30, 2004. 013 12 */ 013 13 013 14 #ifndef _TIMERS_H 013 15 #define _TIMERS_H 013 16 013 17 #include <limits.h> 013 18 #include <sys/types.h> 013 19 013 20 struct timer; 013 21 typedef void ... */ 011 10 #define TCIOFLUSH 3 /* flush accumulated input and output data */ 011 11 011 12 /* Action values for tcflow(). POSIX Sec. 7.2.2.2. */ 011 13 #define TCOOFF 1 /* su...

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... include/sys/sigcontext.h 017 00 include/sys/stat.h 014 00 include/sys/types.h 019 00 include/sys/wait.h Drivers 10 800 drivers/drivers.h 12 100 drivers/at_wini/at_wini.c 12 000 drivers/at_wini/at_wini.h 11 000 drivers/libdriver/driver.c 10 800 ... drivers/libdriver/driver.c 10 800 drivers/libdriver/driver.h 11 400 drivers/libdriver/drvlib.c 10 900 drivers/libdriver/drvlib.h 11 600...

Ngày tải lên: 12/08/2014, 22:21