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

Define the types of software life cycle, Define the types of software life ...

Define the types of software life cycle Any system progress refers to the initial part of the software life cycle: analysis, design, and implementation. During object oriented

Estimate the size of the state space, 1. The missionaries and cannibals pro...

1. The missionaries and cannibals problem. Three missionaries and three cannibals are on the left river bank, with a boat that can hold one or two people. If on either side of the

Recursion, Ask qurecurrion for short noteestion

Ask qurecurrion for short noteestion

Major characteristics of a computer family, Q. Major characteristics of a c...

Q. Major characteristics of a computer family? Let us summarise the major characteristics of a computer family. These are as below: Figure: Characteristics of computer

Explain open source software, Explain Open source software? Open Source...

Explain Open source software? Open Source Software is software for which the underlying programming code is available to the users so that they might be read it, make changes t

Implementation of a simple arithmetic, Q. Implementation of a Simple Arithm...

Q. Implementation of a Simple Arithmetic? So, by now we have concerned how logic and arithmetic micro-operations can be applied individually. If we combine these 2 circuits alo

Steps in building the structure chart, Steps in Building the Structure Char...

Steps in Building the Structure Chart 1. Recognize top level modules and decompose them into lower levels 2. Add control connections 3. Add couples 4. Review and revis

Illustration of cache size of a system, Q. Illustration of cache size of a ...

Q. Illustration of cache size of a system? Cache Size: Cache memory is very costly as compared to main memory and therefore its size is generally kept very small.  It has bee

Define syntax of mpi_scan function, Q. Define syntax of MPI_Scan  function...

Q. Define syntax of MPI_Scan  function? MPI_Scan (Sendaddr,, Receiveaddr , count, datatype, op, comm): It merges the partial values in p final results that are received in

What are the two ways in which the system using cache, What are the two way...

What are the two ways in which the system using cache can proceed for a write operation? Write by protocol technique Write-back or Copy-back protocol method

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