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https://github.com/harshitv21/memory-allocator-in-c
A basic implementation of memory allocation using C.
https://github.com/harshitv21/memory-allocator-in-c
Last synced: 3 days ago
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A basic implementation of memory allocation using C.
- Host: GitHub
- URL: https://github.com/harshitv21/memory-allocator-in-c
- Owner: Harshitv21
- Created: 2023-10-03T15:16:19.000Z (about 1 year ago)
- Default Branch: main
- Last Pushed: 2023-10-03T16:16:17.000Z (about 1 year ago)
- Last Synced: 2023-10-04T14:13:50.594Z (about 1 year ago)
- Language: C
- Size: 1.6 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Memory Allocator in C
The goal of this project was to implement a pretty basic memory allocator to better understand the memory allocation by writting our own `malloc()`, `calloc()`, `realloc()` and `free()`.
By implementing these functions on our own we will be able to understand the intuition behind the working of these functions.
## Docs
A step-by-step beginner friendly guide can be found [here](https://github.com/Harshitv21/Memory-Allocator-In-C/blob/main/Docs/Memory%20Allocator.md) for anyone who wants to implement or try it for yourself.
Source code for this project can be found [here](https://github.com/Harshitv21/Memory-Allocator-In-C/blob/main/src/memAlloc.c).
## Compiling and using our memory allocator
We’ll be compiling our memory allocator and then run a utility like **ls** using our memory allocator.
First compile it as a library file.
```bash
$ gcc -o memAlloc.so -fPIC -shared memAlloc.c
```
Set the environment variable `LD_PRELOAD` to the path of a shared object, this way our file will be loaded before any other library.
```bash
$ export LD_PRELOAD=$PWD/memAlloc.so
```
Now to test,
```bash
$ ls
memAlloc.c memAlloc.so
```
And now our memory allocator is serving `ls`!.