emap_deregister_boundary
emap_deregister_interior
emap_do_assert_mapped
emap_do_assert_not_mapped
emap_init
emap_merge_commit
emap_merge_prepare
emap_register_boundary
emap_register_interior
emap_release_edata
emap_remap
emap_split_commit
emap_split_prepare
emap_try_acquire_edata_neighbor
emap_try_acquire_edata_neighbor_expand
emap_update_edata_state