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1.1 KiB
1.1 KiB
The Memory Manager
The manager will init itself if there are no blocks. The manager is modeled after a double LinkedList and is not a List.
Memory Layout
The layout does not have a preset list or table but rather every item has meta data linking the next and previous item. This allows for a robust system.
The data layout is as follows:
Block|Block|Block etc.
Block =
Meta Data|Data
Meta data =
4 bytes (preveus block address start)|4 bytes (next block address start)|4 bytes (curent[this] block size)| 4 bytes (curent[this] block flag)
```
BlockFlags :
```
Allocated = 0,
Free = 1,
```
the final layout looks like this:
```
4 bytes|4 bytes|4 bytes|4 bytes | (size of Block) bytes | 4 bytes|4 bytes|4 bytes | 4 bytes | (size of Block) bytes | etc
```
Note:
this means the smallest size an Block can occupy is 17 bytes, 16 bytes for the header and 1 for the smallest data type a byte.
# Usage
### Allocation
Allocating a block happens by finding the first free block and split it (if necessary).
## Deallocation
Freeing a block is easy set its flag (in the metadata) to free.