bdescr * large_objects; // large objects (doubly linked)
unsigned int n_large_blocks; // no. of blocks used by large objs
+ StgTSO * threads; // threads in this step
+ // linked via global_link
// ------------------------------------
// Fields below are used during GC only
bdescr * bitmap; // bitmap for compacting collection
+ StgTSO * old_threads;
} step;