Task *returning_tasks_hd; // Singly-linked, with head/tail
Task *returning_tasks_tl;
#endif
+
+ // Per-capability STM-related data
+ StgTVarWaitQueue *free_tvar_wait_queues;
+ StgTRecChunk *free_trec_chunks;
+ StgTRecHeader *free_trec_headers;
+ nat transaction_tokens;
}; // typedef Capability, defined in RtsAPI.h