Capability *cap = *pcap;
// if we have work, and we don't need to give up the Capability, continue.
- if (!emptyRunQueue(cap) && !shouldYieldCapability(cap,task))
+ if (!shouldYieldCapability(cap,task) &&
+ (!emptyRunQueue(cap) || blackholes_need_checking))
return;
// otherwise yield (sleep), and keep yielding if necessary.