H5Pset_hyper_vector_size

herr_t H5Pset_vlen_mem_manager(hid_t plist_id, H5MM_allocate_t alloc_func, void *alloc_info, H5MM_free_t free_func, void *free_info); herr_t H5Pget_vlen_mem_manager(hid_t plist_id, H5MM_allocate_t *alloc_func, void **alloc_info, H5MM_free_t *free_func, void **free_info);