Programming JAVA - C++

Price: $40 USD

Question description

C++ or Java Programming assignment.

This program assignment is designed to implement a simulation program which shows the the demand paging scheme with page replacement of virtual memory systems. As the system resource, a certain amout of memory spaces is allocated as the physical memory. In order to provide the demand paging scheme, a frame allocation and a page replacement algorithms are supposed to be incorporated into the system kernel. Page demand will be simulated according to a reference string.

  7, 0, 1, 2, 0, 3, 0, 4, 2, 3, 0, 3, 2, 1, 2, 0, 1, 7, 0, 1

You may or may not create processes or threads to generate the above page faults.

In order to implement virtual memory, you will make the page tables have special bits in each page table entry.

  • valid-invalid bit to tell the machine which virutal pages are resident in memory and which are not resident.

  • reference bit (use bit) to indicate a page is referenced (either a read or a write to any byte in the page). This is associated with each entry in the page table and used as the basis for many page-replacement algorithms.

  • dirty bit to mark whether a process modified the corresponding vitual page and inform the kernel that the page is dirty.

First Phase: Demand paging using page faults should show that the kernel, memory management unit (MMU), dynamically loads virtual pages on demand by allocating a frame from a pool of free frames.

Second Phase: Implement a page replacement algorithm, enabling your system (kernel) to evict any virtual page from physical memory in order to free up a physical page frame to effectively handle a page fault. This demand paging and page replacement together allow the kernel to execute more processes than can fit in the available physical memory. Frame allocation will be simplifed by adopting equal or proportional allocation.

Tutor Answer

(Top Tutor) Daniel C.
School: UCLA
Studypool has helped 1,244,100 students
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1820 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors