Explain garbage collection, Computer Engineering

Assignment Help:

Explain Garbage collection

In this method two passes are made over the memory to identify new areas. In the first pass it traverses all pointers pointing to allocated areas and marks the memory areas which are in use. The second pass finds out all unmarked areas and declares them to be free. The garbage collection overheads are not incremental. They are acquired every time the system runs out of free memory to allocate to new requests.  
Two major approaches to reuse free memory area in a heap are:

First-fit:  Allocate the first hole which is big enough. Searching can start either at the starting of the set of holes or where the previous first-fit search ended. Searching is stopped when a free hole is found that is large enough

Best-fit:  Allocate the smallest hole which is big enough; whole list is searched, unless ordered by size.  This strategy generates the smallest leftover hole.   


Related Discussions:- Explain garbage collection

What is a flip-flop, What is a flip-flop? Ans. Flip-flop is particu...

What is a flip-flop? Ans. Flip-flop is particular bit memory cell. This stores individual bit information in its true and compliment form. It is the basic block of any sequ

Explain FIFO page replacement algorithm, Explain FIFO Page replacement algo...

Explain FIFO Page replacement algorithm. FIFO policy: This policy only removes pages in the order they entered in the main memory. By using this policy we simply eliminate a

What can digital circuits do?, Circuits can be designed to implement a spec...

Circuits can be designed to implement a specifictaske.g. a simple circuit could compare two inputvoltages and give a high output if they matched anda low output if they did not mat

Users to run programs at same time, A computer system that allows multiple ...

A computer system that allows multiple users to run programs at similar time   Multi tasking system

What is recursing downwards, What is recursing downwards? And its ways. ...

What is recursing downwards? And its ways. The design process generally works top-down; you start with the higher level operations and proceed to describe lower level operation

How physical addressing is performed in wan, How physical addressing is per...

How physical addressing is performed in WAN?  WAN networks operate as similar to a LAN. All WAN technology describes the specific frame format a computer uses while sending an

What is directory, What is Directory?   The device directory or simply ...

What is Directory?   The device directory or simply called as directory records information-such as name, location, size, and type for all files on that certain partition. The

DBMS, DEFINE FILE ORGANISATION

DEFINE FILE ORGANISATION

How to add a wait state when creating a verification point, 1. Start to mak...

1. Start to make the verification point. 2. In the confirmation Point Name dialog box, select Apply wait state to confirmation point. 3. Type values for the following option

Real-time systems and control, A group report with no more than three stude...

A group report with no more than three students per group is to be handed in to explain your design procedures and simulation results. Representative graphical system outputs (clea

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