Yes Adrian,
if I synch ON THE OBJECT and only the access code for that object on both
sides, it works...
Many thanks.
Ionel.
----- Original Message -----
From: "Adrian Janssen" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, November 07, 2002 3:21 PM
Subject: Re: how to lock the access to an array till a method is finished
...
> syncronise all and any code that accesses the array, and make sure that
your
> blocks are "wide" enough.
>
> E.G. this WON'T work because the "syncronized" bock should be out-side of
> the loop.
>
> public void populateBigArray ( long[] bigArray )
> {
> for (i = 0 ; i< VERY_BIG_NUMBER ; i++)
> {
> syncronized (bigArray)
> {
> bigArray[i] = i;
> }
> }
> }
>
>
>
> > -----Original Message-----
> > From: Ionel Condor [SMTP:[EMAIL PROTECTED]]
> > Sent: 07 November 2002 03:16
> > To: [EMAIL PROTECTED]
> > Subject: Re: how to lock the access to an array till a method is
> > finished ...
> >
> > I have already do this but does not help.
> > The synch in this case does not help, as it LOCKS the object that calls
> > the
> > method and NOT THE the array that is used by the method and also by the
> > jsp
> > page.
> > (my use of 'volatile' also does not help).
> >
> > Ionel.
> >
> > > Syncronize the code/method that populates the array as well as the
> > > code/methods that access it. This can either be done using the
> > syncronise
> > > method modifier, or using syncronised blocks, which is better.
> > >
> > > This is however more of an elementary Java issue though, search the
web
> > for
> > > the PDF version of Bruce Eckel's book: "Thinking in Java" and read
> > chapter
> > > 14.
> > >
> > >
> > >
> > > > -----Original Message-----
> > > > From: Ionel Condor [SMTP:[EMAIL PROTECTED]]
> > > > Sent: 07 November 2002 02:43
> > > > To: [EMAIL PROTECTED]
> > > > Subject: how to lock the access to an array till a method is
> > > > finished...
> > > >
> > > > Hi,
> > > > I have the following situation:
> > > > In a bean, I have a method that populates an array with a large,
very
> > > > large
> > > > amount of data (required for some operations).
> > > > From my jsp page I do not want to allow any web clients to see the
> > length
> > > > of
> > > > this array, till the process of population is finished....I mean
that
> > > > otherwise one can see intermediary results and I want to avoid this.
> > > >
> > > > (I have tried to mark volatile the array but this helps me only to
> > keep
> > > > the
> > > > correct value in all the threads, does not lock me also the object).
> > > >
> > > > Do I have to use a complicated wait/notify mechanism to achive this
or
> > how
> > > > can I do ?
> > > >
> > > > Many thanks,
> > > > Ionel C.
> > > >
> > > >
> >
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