Memory Pagination Simulator

Project

Specifications

Language: Java JDK 8

Input data: http://traces.cs.umass.edu/index.php/CpuMem/CpuMem

Pagination size: 2¹² = 4096 bytes (4MB)

Number of bits to displacement: 12 bits

Number of bits to address: 20 bits

Size of logic adress: 32 bits

Use

The program may be call using:

java -jar program.jar [file][method|all][number of frames][size]

Where:

1. java -jar Invokes the JRE to run the program.

2. program.jar The built program location.

3. file The input file.

4.method|all Select which method will be executed (fifo or optimal).

5. number of frames The user select how many frames the memory has.

6. size The size of each page in bytes, the input consists of an integer which represents a power of two number, but has a default value if the user does not put it.

The input file is a txt available on Specification:

  B5E723DC
  B5E723DC
  FEDD98DD
  B5E723DC
  B5E723DC
  B5E723DC
  B5E723DC
  B5E723DC

This represents the memory access, after will be implemented an reference string considering the paging size and address.
In case of the input value does not have 8 hexadecimal digits which represents 32 bits, the program fills zeros while the size of values are less than 8.

Output

Are expected two differents outputs

1. Page Substitution

---------------------------------------
| Deallocated      | Allocated        | 
---------------------------------------
| Page 1           | Page 2           | 
---------------------------------------

2. Final Results

Method: FIFO
Number of frames: 8
Page size: 4096
Offset: 12 bits
Address: 20 bits
----------------------------------------
| Number of page fault |       20      |
----------------------------------------