Determine resources, need matrix using banker's algorithm, Computer Engineering

Assignment Help:

Consider the following system snapshot using data structures in the Banker's algorithm, with resources A, B, C, and D, and process P0 to P4:

                          Max                             Allocation                        Need                             Available

 

P0

A

6

B

0

C

1

D

2

A

4

B

0

C

0

D

1

A    B   C   D

A

B

C   D

P1

1

7

5

0

1

1

0

0

 

 

 

 

P2

2

3

5

6

1

2

5

4

 

 

 

 

P3

1

6

5

3

0

6

3

3

 

 

 

 

P4

1

6

5

6

0

2

1

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

2

1    1

Using Banker's algorithm, answer the following questions.

(a)   How many resources of type A, B, C, and D are there?

(b)   What are the contents of the Need matrix?

(c)   Is the system in a safe state? Why

(d)  If a request from process P4 arrives for additional resources of (1,2,0,0,), can  the  Banker's  algorithm  grant  the  request  immediately? Show the new system state and other criteria.

(a) Resources of type A, B, C, and D are as: A-9; B-13;C-10;D-11

(b) Need[i, j]=Max[i,j]-Allocation[i,j] therefore content of Need matrix is

            A          B          C          D

P0        2          0          1          1

P1        0          6          5          0

P2        1          1          0          2

P3        1          0          2          0

P4        1          4          4          4

(c)  The  system  is  in  a  safe  state  like  the  processes  can  be  complete  in  the sequence P0, P2, P4, P1 and P3.

(d) If a request from process P4 attains for additional resources of (1,2,0,0,), and if such request is granted so the new system state would be in tabulated form asfollows.

                  Max                    Allocation              Need                         Available

             A   B   C    D        A   B   C   D              A   B    C    D               A   B   C   D

P0        6    0    1    2         4    0    0    1          2    0    1    1

P1        1    7    5    0         1    1    0    0          0    6    5    0

P2        2    3    5    6         1    2    5    4          1    1    0    2

P3        1    6    5    3         0    6    3    3          1    0    2    0

P4        1    6    5    6         1    4    1    2          0    2    4    4

2    0    1    1

After PO finishes P3 can be assigned. 1020 from released 6012 and also available 2011(Total 80 23) and is a safe sequence.


Related Discussions:- Determine resources, need matrix using banker's algorithm

What are kinds of processors, Processors can broadly be seperated into the ...

Processors can broadly be seperated into the categories of: CISC, RISC, hybrid, and special purpose.

Where particular header ends & next item begins of ipv6, As IPV6 contain mu...

As IPV6 contain multiple headers, how does it know where particular header ends and next item begins? Several headers types contain fixed size. For illustration a base header h

Define synchronization latency problem, Q. Define Synchronization Latency P...

Q. Define Synchronization Latency Problem? If two simultaneous processes are executing remote loading then it's not recognized by what time two processes will load as issuing p

How putchar function is used within a c program, How putchar function is us...

How putchar function is used within a C Program ? The following program reads each character in the first line of input entered at the terminal's keyboard. It uses putchar to d

What is the scope of public members in all classes, What is the Scope of pu...

What is the Scope of public/private/friend/protected/protected friend?    Scope of public/private/friend/protected/protected friend. Visual Basic/Visual C# Public/pub

Visibility, hidden edge/surface removal

hidden edge/surface removal

Overall computing time, Clustering has been existing since the 1980s when i...

Clustering has been existing since the 1980s when it was used in DEC's VMS systems. IBM's SYSLEX is a cluster approach for a mainframe system. Sun Microsystems, Microsoft, and othe

Requirements of decision support system, Q. Requirements of decision suppor...

Q. Requirements of decision support system? a) Fast computation A decision maker is able to perform a large number of computations very quickly and that too at a low cost

Explain in brief about compact disks, Explain in brief about Compact disks ...

Explain in brief about Compact disks (CD) These are an optical storage media that have basically taken over from floppy disk. Software is now generally supplied on a CD (in for

#title.sequential circuit, design modulo 12 up synchronous counter using t ...

design modulo 12 up synchronous counter using t flip flop

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd