13, multithreading-producer consumer issues 2

Key Code 1

Private Lock New Reentrantlock (); Private Lock . Newcondition (); Private lock. newcondition ();

Key Code 2

R.getlock (). Lock ();
Try {R.getcondition_pro (). await ();} Catch (Exception e) {}r.getcondition_con (). Signalall ();                R.getlock (). Unlock ();                 

Full code:

Package Songyan;import java.util.concurrent.locks.*; classres{PrivateLockLock=NewReentrantlock ();  PublicLock Getlock () {return Lock; }     Public voidSetlock (LockLock) {         This.Lock=Lock; }    PrivateCondition Condition_pro =Lock. Newcondition ();  PublicCondition Getcondition_pro () {returnCondition_pro; }     Public voidSetcondition_pro (Condition condition_pro) { This. Condition_pro =Condition_pro; }     PublicCondition Getcondition_con () {returnCondition_con; }     Public voidSetcondition_con (Condition condition_con) { This. Condition_con =Condition_con; }    PrivateCondition Condition_con =Lock. Newcondition (); PrivateString name; Private intID; PrivateBoolean flag;  PublicBoolean Getflag () {returnFlag; }      Public voidSetflag (Boolean flag) { This. flag=Flag; }      PublicString GetName () {returnname; }      Public intgetId () {returnID; }      Public voidsetName (String name) { This. name=name; }      Public voidSetId (intID) { This. id=ID; } } classPro implements runnable{PrivateRes R;  Public voidrun () {intx=0;  while(true) {R.getlock ().Lock();  while(R.getflag ())Try{R.getcondition_pro ().await();}Catch(Exception e) {}if(x==0) {R.setname ("Zhang San"); R.setid (R.getid ()+1); System. out. println (R.getname () +"* * Production * * * *"+R.getid ()); }                 Else{r.setname ("Zhangsan"); R.setid (R.getid ()+1); System. out. println (R.getname () +"* * Production * * * *"+R.getid ()); } x= (x+1)%2; R.setflag (true);                 R.getcondition_con (). Signalall ();         R.getlock (). Unlock (); }} Pro (Res r) { This. r=R; } } classCons implements runnable{PrivateRes R;  Public voidrun () { while(true) {R.getlock ().Lock();  while(!R.getflag ())Try{R.getcondition_con ().await();}Catch(Exception e) {} System. out. println (R.getname () +"* * * Consumer * * *"+R.getid ()); R.setflag (false);                R.getcondition_pro (). Signalall ();         R.getlock (). Unlock (); }} Cons (Res r) { This. r=R; } }  Public classtest{ Public Static voidMain (string[] args) {Res R=NewRes (); Pro P=NewPro (R); Cons C=NewCons (R); Thread T1=NewThread (P); Thread T2=NewThread (c); Thread T3=NewThread (P); Thread T4=NewThread (c);         T1.start ();         T2.start ();         T4.start ();             T3.start (); }     }

13, multithreading-producer consumer issues 2