Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.java.programmer > #29360

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

Show all headers | View raw

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

Back to comp.lang.java.programmer | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

thread: catch the current thread in a share object Bert_emme <bertanimauro@gmail.com> - 2014-07-26 09:20 -0700
  Re: thread: catch the current thread in a share object markspace <markspace@nospam.nospam> - 2014-07-26 10:08 -0700
  Re: thread: catch the current thread in a share object Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-26 14:19 -0400
    Re: thread: catch the current thread in a share object Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-27 08:06 -0400
  Re: thread: catch the current thread in a share object Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2014-07-26 14:04 -0700

csiph-web