STMMR - Fixed Size Stack Memory Allocator

Based on public domain code by Eli Bendersky (eliben at gmail.com).

Changes added By - Bhathiya Perera AKA JaDogg. 🌞

Why?

Pretend to use heap memory while using a stack allocated fixed size (during compile time) block of memory.

Usage

1. Rename malloc etc to functions provided here using something like #define malloc stmmr_malloc.
2. For libraries you use override appropriate #defines and point them to stmmr_xxx functions.
3. Do not mix with any other allocator's allocated memory. ☠️☠️
4. Available methods. stmmr_malloc, stmmr_free, stmmr_realloc, stmmr_calloc.
5. Do not use any other function that allocates memory behind the back. ☠️

Tiny modifications added.

1. stmmr_free does not continue if pointer is NULL.
2. Uses stdint.h for unsigned data types. This is now therefore need C99.
3. Added stmmr_realloc(p, size). - This uses the hidden header allocated behind the pointer to get the size of current memory block.
4. Added stmmr_calloc(num, size).
5. Added data type stmmr_int_t.
6. Single header implementation. #define STMMR_IMPL in one C file before including stmmr.h. For other files just include stmmr.h
7. Added support for a custom pool to be provided, Allows usage similar to an arena. #define STMMR_CUSTOM_POOL then pass it to init.
8. Renamed some globals with stmmr_ prefix.

License

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

For more information, please refer to https://unlicense.org