Identify free memory areas in allocation and de-allocations, Computer Engineering

Assignment Help:

Name and explain the popular techniques to identify free memory areas as a result of allocation and de-allocations in a heap.

Two well-liked techniques to identify free memory areas like a result of allocation and de-allocations in a heap are as:

1. Reference count: the system relates a reference count with each memory area to show the number of its active users. This number is incremented while a user accesses such area and decrements while user stops using it. The region is free if the reference counts drops to zero. Such scheme is very simple to implement although incurs incremental overheads.

2. Garbage collection: In such technique two passes are done over the memory to identify unused areas. Into the first pass this traverses all pointers pointing to assigned areas and marks the memory areas which are in use. The second pass determines all unmarked areas and declares them to be free. Its overheads are not incremental. They are incurred all time the system runs-out of free memory to assign to fresh requests.


Related Discussions:- Identify free memory areas in allocation and de-allocations

What is scan, What is "Scan"? Scan Insertion and ATPG helps test ASICs ...

What is "Scan"? Scan Insertion and ATPG helps test ASICs (e.g. chips) during manufacture. If you know what JTAG boundary scan is, then Scan is the similar idea except that it i

Transition management system, please help me with psudocode for schedule ma...

please help me with psudocode for schedule management which contains stakeholder and application table

What are the events used for page headers and footers, What are the events ...

What are the events used for page headers and footers? The events TOP-OF-PAGE and END-OF-PAGE are used for pager headers and footers.

Name various work processes of r/3 system, Name various work processes of R...

Name various work processes of R/3 system? A) Dialog or Online (processes only one request at a time). B) Background (Started at a specific time) C) Update (primary or se

Explain switching system of a finite state machine model, Show how finite s...

Show how finite state machine model helps in designing a switching system and give a typical example. Switching system fundamentally belongs to the class of finite state machi

Validate the xml document , As an XML expert you are needed to model a syst...

As an XML expert you are needed to model a system for an online furniture shop. After an interview with the shop manager you have the certain information: The detail of th

Differentiate between protection and security, Differentiate between Protec...

Differentiate between Protection and Security Operating system contains a collection of objects, hardware or software. Every object has a unique name and can be accessed via a

Detail explanation of cryptographic modules, Detail explanation of Cryptogr...

Detail explanation of Cryptographic modules Physical security of the cryptographic modules is also built in order to provide total security of the whole system and protect from

Define dynamic linking, Define dynamic linking.  Dynamic linking is sam...

Define dynamic linking.  Dynamic linking is same to dynamic loading, rather that loading being postponed unless execution time, linking is postponed. This feature is usually us

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