Multi-Threaded Actors

p r o t e c t e d F o r k J o i n P o o l ma inExecu to r ;p r o t e c t e d P r i o r i t y B l o c k i n g Q u e u e messageQueue ;p r o t e c t e d Concur ren tL inkedQueue lockedQueue ;p r o t e c t e d P r i o r i t y B l o c k i n g Q u e u e a v a i l a b l e W o r k e r s ;p r o t e c t e d Set busyWorkers ;p r o t e c t e d Set busyData ; p u b l i c Acto r ( ) {/ / i n i t i a l i z a t i o n o f i n t e r n a l da ta s t r u c t u r e s} @Overridep u b l i c vo id run ( ) { whi le ( t rue ) {t r y {Message message = messageQueue . t a k e ( ) ;i f ( r e p o r t S y n c h r o n i z e d D a t a ( message . syncDa ta ) ) {synchronized ( busyData ) {busyData . ad dA l l ( message . syncDa ta ) ;}mainExecu to r . su bmi t ( message . f ) ;} e l s e {t h i s . lockedQueue . o f f e r (newM ) ;}} ca tch ( I n t e r r u p t e d E x c e p t i o n e ) {e . p r i n t S t a c k T r a c e ( ) ;}}} / / message f o r m a t : ()−>ge tWorker ( ) . m( )p u b l i c Fu tu re send ( O b j e c t message , Set d a t a ) {Message m = new Message ( message , da t a , name ) ;messageQueue . p u t (m) ;re turn ( Fu tu re) m. f ;} p u b l i c A c t i v e O b j e c t getNewWorker ( O b j e c t . . . p a r a m e t e r s ) {A c t i v e O b j e c t s e l e c t e d w o r k e r = n u l l ; t r y {s e l e c t e d w o r k e r = a v a i l a b l e W o r k e r s . t a k e ( ) ;busyWorkers . add ( s e l e c t e d w o r k e r ) ;} catch ( I n t e r r u p t e d E x c e p t i o n e ) {e . p r i n t S t a c k T r a c e ( ) ;} re turn s e l e c t e d w o r k e r ;} p r i v a t e boolean r e p o r t S y n c h r o n i z e d D a t a ( Set d a t a ) {Set t empSe t = new HashSet ( ) ; synchronized ( busyData ) {t empSet . a dd Al l ( busyData ) ;t empSet . r e t a i n A l l ( d a t a ) ; i f ( t empSet . i sEmpty ( ) ) {re turn true ;}re turn f a l s e ;} } p r o t e c t e d void f r e e W o r k e r ( A c t i v e O b j e c t worker , O b j e c t . . . d a t a ) { synchronized ( busyData ) {busyWorkers . remove ( worker ) ;a v a i l a b l e W o r k e r s . o f f e r ( worker ) ; messageQueue . ad dA l l ( lockedQueue ) ;lockedQueue . c l e a r ( ) ; f o r ( O b j e c t o b j e c t : d a t a ) {busyData . remove ( o b j e c t ) ;} } } p u b l i c i n t e r f a c e A c t i v e O b j e c t ex tends Comparable {/ / t h e a c t i v e o b j e c t s i n charge o f r e q u e s t s}}