Function libmimalloc_sys::mi_is_in_heap_region

pub unsafe extern "C" fn mi_is_in_heap_region(
    p: *const c_void
) -> bool

Returns true if this is a pointer into a memory region that has been reserved by the mimalloc heap.

This function is described by the mimalloc documentation as “relatively fast”.

See also mi_heap_check_owned, which is (much) slower and slightly more precise, but only concerns a single mi_heap.