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* Add randomized correctness testThomas Vanbesien2026-02-272-2/+191
| | | | | | | test_random allocates N blocks per category (TINY/SMALL/LARGE) with random sizes, fills them with a deterministic pattern, and verifies the data. Run with system malloc and LD_PRELOAD to compare output. Seed and count are parameterized via argv.
* Implement free and add testing notes to READMEThomas Vanbesien2026-02-272-4/+73
| | | | | | free now locates the chunk matching the pointer, marks it as free for TINY/SMALL zones, and munmaps LARGE allocations. Document why ASan is incompatible and list alternatives.
* Add chunk splitting and free-chunk search, use sysconf for page sizeThomas Vanbesien2026-02-272-7/+51
| | | | | | malloc now searches zones for a free chunk, splits it to the requested aligned size, and allocates a new zone when none have space. Replace getpagesize() with sysconf(_SC_PAGESIZE).
* Add show_alloc_mem and test_show, rename test to test_preloadThomas Vanbesien2026-02-275-8/+131
| | | | | | Implement show_alloc_mem() to print all zones and allocations by ascending address. Add test_show binary that links directly against libft_malloc.so to exercise it.
* Add zone allocation, internal data structures, and READMEThomas Vanbesien2026-02-275-6/+181
| | | | | | Implement mmap-based zone allocation for TINY (<=128B) and SMALL (<=1024B) categories. malloc now creates zones on demand and returns a pointer to the first chunk.
* Initial scaffold: Makefile, stub malloc/free/realloc, test harnessThomas Vanbesien2026-02-2212-0/+233
Build system produces libft_malloc_$HOSTTYPE.so shared library with Libft (NOMALLOC=1) as dependency. Stub functions print their name and return NULL. Test runner compares system malloc vs LD_PRELOAD output using write(2) to avoid stdio interference.