SCM_API struct scm_t_cell_type_statistics scm_i_master_freelist2;
SCM_API unsigned long scm_gc_malloc_collected;
-SCM_API unsigned long scm_gc_ports_collected;
SCM_API unsigned long scm_cells_allocated;
SCM_API int scm_gc_malloc_yield_percentage;
SCM_API unsigned long scm_mallocated;