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A seguir: Multiprocessadores Acima: Chaves e Camas Anterior: Chaves

Camas

 
class Bed {   
   Queue waiting;
}  
 
void wait(Bed b, Key k) {  
   InterruptStatus is = saveInterruptStatus();
   disableInterrupts(); 
   currentProcess.state = WAITING;  
   unlock(k); 
   b.waiting.put(currentProcess);
   transfer(currentProcess.coroutine, kernel); 
   is.restore(); 
}  
 
void wakeup(Bed b, Key k) {  
   InterruptStatus is = saveInterruptStatus();
   disableInterrupts(); 
   while ((Process p = b.waiting.get()) != null) {   
      p.state = WAITING; 
      k.waiting.put(p); 
   }   
   is.restore(); 
}