Function _mi_prim_alloc

system/lib/mimalloc/src/prim/emscripten/prim.c:77–91

Note: the `try_alignment` is just a hint and the returned pointer is not guaranteed to be aligned.

// Note: the `try_alignment` is just a hint and the returned pointer is not guaranteed to be aligned.
int _mi_prim_alloc(void* hint_addr, size_t size, size_t try_alignment, bool commit, bool allow_large, bool* is_large, bool* is_zero, void** addr) {
  MI_UNUSED(allow_large); MI_UNUSED(commit); MI_UNUSED(hint_addr);
  *is_large = false;
  // TODO: Track the highest address ever seen; first uses of it are zeroes.
  //       That assumes no one else uses sbrk but us (they could go up,
  //       scribble, and then down), but we could assert on that perhaps.
  *is_zero = false;
  // emmalloc has a minimum alignment size.
  #define MIN_EMMALLOC_ALIGN           8
  if (try_alignment < MIN_EMMALLOC_ALIGN) {
    try_alignment = MIN_EMMALLOC_ALIGN;
  }
  *addr = emmalloc_memalign(try_alignment, size);
  return (*addr != NULL ? 0 : ENOMEM);
}


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