Create the default heap block

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Reference no: EM132409336

Programming Assignment

Goals

Learn how the internal operations of malloc() and free() work.

Complete a heap allocator using the implicit free list data structure.

Implement the allocate, free, split, and coalesce heap operations.

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Allocating the Default Heap Block

When the cis20 library is initialized, you must create the default heap block. This unallocated block will exist to start the heap. It may not be the first block used because it only has a size of 24 bytes. Remember that 8 bytes of every block are reserved for the header and footer. Thus, a 24 byte block only has 8 bytes available to store user program data!

Run the first test file to ensure that the test runs

How to Split a Free Block

Block splitting only occurs during allocation. In fact, block_split is already called by the cis20_alloc function, but it does not do anything useful yet.

By default, the block_split function does not actually split the block, instead it just returns the size of the block.

The intent of the function is to split large blocks when not all of the block space is needed. This is meant to be an optimization so that excessive fragmentation can be avoided.

The split operation takes a few steps:

1. Resize the original block to match the requested size.

2. Create a new block after the original block by writing a header and footer with the block size and marked as unallocated.

3. Return the requested size to indicate that the original block has changed sizes.

The implementation of this algorithm is entirely up to you

Attachment:- Programming Assignment.rar

Reference no: EM132409336

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