A computer system consists of hardware, system programs, and application programs figs 5

A computer system consists of hardware, system programs, and application programs figs 1

A computer system consists of hardware, system programs, and application programs figs 1

... program and data User program and data Operating System Address 0xFFFFFFFF Limit Base 0 (a) User-2 data User-1 data User program Operating System Base-2 Limit-2 Limit-2 Limit-1 Base-2 Base-1 (b) Limit-1 Base-1 ... model in a distributed system. Banking system Airline reservation Operating system Web browser Compilers Editors Application programs Hardware System progr...
Ngày tải lên : 28/04/2014, 16:35
  • 30
  • 388
  • 0
A computer system consists of hardware, system programs, and application programs figs 2

A computer system consists of hardware, system programs, and application programs figs 2

... of a global vari- able. Thread 1's code Thread 2's code Thread 1's stack Thread 2's stack Thread 1's globals Thread 2's globals Fig. 2-17. Threads can have private ... equal. Now we are engaged in a great civil war testing whether that nation, or any nation so conceived and so dedicated, can long endure. We are met on a great battlefield of t...
Ngày tải lên : 28/04/2014, 16:35
  • 45
  • 346
  • 0
A computer system consists of hardware, system programs, and application programs figs 3

A computer system consists of hardware, system programs, and application programs figs 3

... Demonstration that the state in (a) is safe. A B C 3 2 2 9 4 7 Free: 3 (a) A B C 4 2 2 9 4 7 Free: 2 (b) A B C 4 4 —4 2 9 7 Free: 0 (c) A B C 4 — 2 9 7 Free: 4 (d) Has Max Has Max Has Max Has Max Fig. ... A B C 3 2 2 9 4 7 Free: 3 (a) A B C 3 4 2 9 4 7 Free: 1 (b) A B C 3 0 –– 2 9 7 Free: 5 (c) A B C 3 0 7 9 7 Free: 0 (d) – A B C 3 0 0 9 – Free: 7 (e) Has Max Has Max Has...
Ngày tải lên : 28/04/2014, 16:35
  • 15
  • 306
  • 0
A computer system consists of hardware, system programs, and application programs figs 4

A computer system consists of hardware, system programs, and application programs figs 4

... string 021 0 0 0 0 0 0 021 354 637473 355 31117134 4 423 151 261142 353 P Page faults Distance string PPPPPP P P P P 1 354 637473 355 31117134 1 21 354 6374773 353 3317134 21 354 6334477 755 533713 21 354 666644477 755 577 21 155 555 66644444 455 22 1111111166666666 02 222222222222222 00 00000000000000 Fig. ... function of the number of page frames assigned. Single address spac...
Ngày tải lên : 28/04/2014, 16:35
  • 48
  • 291
  • 0
A computer system consists of hardware, system programs, and application programs figs 5

A computer system consists of hardware, system programs, and application programs figs 5

... I/O SOFTWARE LAYERS 5. 4 DISKS 5. 5 CLOCKS 5. 6 CHARACTER-ORIENTED TERMINALS 5. 7 GRAPHICAL USER INTERFACES 5. 8 NETWORK TERMINALS 5. 9 POWER MANAGEMENT 5. 10 RESEARCH ON INPUT/OUTPUT 5. 11 SUMMARY P16-19 ... to scale). A silver CD-ROM has a similar structure, except without the dye layer and with a pitted aluminum layer instead of a gold layer. Polycarbonate substrate 1 P...
Ngày tải lên : 28/04/2014, 16:35
  • 52
  • 404
  • 0
A computer system consists of hardware, system programs, and application programs figs 6

A computer system consists of hardware, system programs, and application programs figs 6

... 4 Address of disk block 5 Address of disk block 6 Address of disk block 7 Address of block of pointers Disk block containing additional disk addresses Fig. 6- 15. An example i-node. (a) games mail news work attributes attributes attributes attributes Data ... utilization Data rate Block size (bytes) Fig. 6-20. The solid curve (left-hand scale) gives the data rate of a disk....
Ngày tải lên : 28/04/2014, 16:35
  • 40
  • 324
  • 0
A computer system consists of hardware, system programs, and application programs figs 7

A computer system consists of hardware, system programs, and application programs figs 7

... organ-pipe distribution of files on a video server A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 (a) A0 A4 B0 B4 C0 C4 D0 D4 A1 A5 B1 B5 C1 C5 D1 D5 A2 A6 B2 B6 C2 C6 D2 D6 A3 A7 B3 B7 C3 C7 D3 D7 (b) A0 A4 B3 B7 C2 C6 D1 D5 A1 A5 B0 B4 C3 C7 D2 D6 A2 A6 B1 B5 C0 C4 D3 D7 A3 A7 B2 B6 C1 C5 D0 D4 (c) A0 A...
Ngày tải lên : 28/04/2014, 16:35
  • 26
  • 244
  • 0
A computer system consists of hardware, system programs, and application programs figs 8

A computer system consists of hardware, system programs, and application programs figs 8

... 2 Run-time system Operating system Shared memory Application Hardware Run-time system Operating system Application Hardware (b) Machine 1 Machine 2 Run-time system Operating system Shared memory Application Hardware Run-time system Operating system Application Hardware (c) Machine ... memory Application Hardware Run-time system Operating system Application Hard...
Ngày tải lên : 28/04/2014, 16:35
  • 44
  • 285
  • 0
A computer system consists of hardware, system programs, and application programs figs 9

A computer system consists of hardware, system programs, and application programs figs 9

... A cryptographically-protected capability. Goal Threat Data confidentiality Exposure of data Data integrity Tampering with data System availability Denial of service Fig. 9-1. Security goals and ... (b) After the procedure A has been called. (c) Buffer overflow shown in gray. (a) First page (in memory) Second page (not in memory) Page boundary A A A A A A (b) B A A A A...
Ngày tải lên : 28/04/2014, 16:35
  • 36
  • 348
  • 0
A computer system consists of hardware, system programs, and application programs figs 10

A computer system consists of hardware, system programs, and application programs figs 10

... parent Allocate child's stack and user area Fill child's user area from parent Allocate PID for child Set up child to share parent's text Copy page tables for data and stack Set up sharing ... Description s = brk(addr) Change data segment size a = mmap(addr, len, prot, flags, fd, offset) Map a file in s = unmap(addr, len) Unmap a file Fig. 10- 15. Some system calls...
Ngày tải lên : 28/04/2014, 16:35
  • 40
  • 304
  • 0

Xem thêm

Từ khóa: