-/* number of worker threads waiting to do good work within
- the RTS. Used by Task.c (only) to determine whether or not
- new worker threads needs to be created (when an external call
- is made).
+/* number of worker threads waiting for a return capability
extern void grabReturnCapability(Mutex* pMutex, Capability** pCap);
extern void yieldToReturningWorker(Mutex* pMutex, Capability** pCap);
extern void waitForWorkCapability(Mutex* pMutex, Capability** pCap, rtsBool runnable);
extern void grabReturnCapability(Mutex* pMutex, Capability** pCap);
extern void yieldToReturningWorker(Mutex* pMutex, Capability** pCap);
extern void waitForWorkCapability(Mutex* pMutex, Capability** pCap, rtsBool runnable);