Re: thread: catch the current thread in a share object

From:

Eric Sosman <esosman@comcast-dot-net.invalid>

Newsgroups:

comp.lang.java.programmer

Date:

Sun, 27 Jul 2014 08:06:30 -0400

Message-ID:

<lr2q06$m1t$1@dont-email.me>

On 7/26/2014 2:19 PM, Eric Sosman wrote:

On 7/26/2014 12:20 PM, Bert_emme wrote:

I try to implement a share object between thread. In the share object
there is a queue. I want that if a condition is realizated the thread
that at the moment lock the object go in wait and I want to put it in
the queue of the shared object. But I don't idea on how referencing to
this thread.
Example

class ObjShare{
     Queue q;

     public synchronized mymethod(){

         if(condition){
            q.put(thecurrentthread)
            wait();
         }

     See markspace's response. Also, this use of wait() is certainly
wrong, for at least two reasons:

     1) It won't compile: wait() is an instance method of Object,
        and you must apply it to some kind of Object reference.
        Perhaps you meant this.wait().

<dope_slap> "Never mind." </dope_slap>

     2) wait() will re-aquire its Object's lock and return after
        some other thread calls notify() or notifyAll() on that
        Object, *or* at any random moment for no reason at all.
        The fact that wait() returns says *nothing* about whether
        the reasons for waiting no longer apply. That's why a
        wait() call should (nearly always) be inside a synchronized
        loop that re-tests the condition after awakening.

This part's right, though.

--
esosman@comcast-dot-net.invalid