but copying GC can be easily implemented with sbrk, or on the bare metal if no MMU is present. mpirstitz's GC uses mmap but could easily be replaced with sbrk.

but copying GC can be easily implemented with sbrk, or on the bare metal if no MMU is present. mpirstitz's GC uses mmap but could easily be replaced with sbrk. the main challenge of dynamic memory management is fragmentation, which is completely handled by using a copying GC. an implementation on top of malloc is not leaning on malloc's fragmentation handling at all.