Groups > comp.lang.java.programmer > #3957

Re: Concurrent bidirectional one-to-many map?

Path	csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.albasani.net!.POSTED!not-for-mail
From	Sebastian <sebastian@undisclosed.invalid>
Newsgroups	comp.lang.java.programmer
Subject	Re: Concurrent bidirectional one-to-many map?
Date	Wed, 11 May 2011 10:51:54 +0200
Organization	albasani.net
Lines	27
Message-ID	<iqdinb$fjv$1@news.albasani.net> (permalink)
References	<iq1kf0$ee2$1@news.albasani.net> <iq1mmc$hbv$1@dont-email.me> <iq348b$iv1$1@news.albasani.net> <nsadnUZcjoF01ljQnZ2dnUVZ_gednZ2d@earthlink.com> <alpine.DEB.2.00.1105080428540.28763@urchin.earth.li> <08586289-8935-4532-93d0-e8c7dd45cb24@c1g2000yqe.googlegroups.com> <alpine.DEB.2.00.1105091825310.18864@urchin.earth.li> <iq9kf7$fr1$1@news.albasani.net> <alpine.DEB.2.00.1105100824001.25309@urchin.earth.li> <iqdg8g$aao$1@news.albasani.net>
Mime-Version	1.0
Content-Type	text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding	7bit
X-Trace	news.albasani.net 8PVVHo7X+At3Ac1WjOa2dnQ++G+fSgUmVqMaADXFcC+tqmRHqt+T5fkTjxANBmfqBbDC4Qb104sSFiolB6s48+MtMsnBk3RlhcSikPtT8AzFr2/Y3WeXfIcEvfr5biee
NNTP-Posting-Date	Wed, 11 May 2011 08:51:55 +0000 (UTC)
Injection-Info	news.albasani.net; logging-data="8JI/DYCkdUwP60CskHxhPmW9yxqHgeFV8fMceBSaqT2uGoApWjJEFS6PDShwFOU/wBzsv/ba7Yg0Mh+Budeq90u+sbwqJvl2MxzjEwZ5EEWyCj2Lmlr16EiQTQyIwZJv"; mail-complaints-to="abuse@albasani.net"
User-Agent	Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.2.15) Gecko/20110303 Thunderbird/3.1.9
In-Reply-To	<iqdg8g$aao$1@news.albasani.net>
Cancel-Lock	sha1:YO3D2ino4KA9zo7y0TOzofcXdqs=
Xref	x330-a1.tempe.blueboxinc.net comp.lang.java.programmer:3957

Show key headers only | View raw

Am 11.05.2011 10:09, schrieb Sebastian:
>
>
> Here's a bit of the WorkspaceManager code referred to above:
>
> public void closeWorkspace( UUID id )
> {
>   writeLock.lock(); // <<<<<<<<<<< necessary ?
>   try {
>    Workspace wp = wpMap.remove( id );
> ...

As afterthought to my immediately preceding post,
let me add that it would be nice if we could process
unrelated workspaces in parallel. How about having a
ReentrantReadWriteLock associated with each workspace,
and using  themlike this:

   Workspace wp = wpMap.get( id );
   wp.writeLock.lock();
   try {
     wpMap.remove( id );
     ...

Wouldn't this improve things?

-- Sebastian

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

Thread

Concurrent bidirectional one-to-many map? Sebastian <sebastian@undisclosed.invalid> - 2011-05-06 22:07 +0200
  Re: Concurrent bidirectional one-to-many map? markspace <-@.> - 2011-05-06 13:45 -0700
    Re: Concurrent bidirectional one-to-many map? Sebastian <sebastian@undisclosed.invalid> - 2011-05-07 11:43 +0200
      Re: Concurrent bidirectional one-to-many map? Lew <noone@lewscanon.com> - 2011-05-07 07:59 -0400
        Re: Concurrent bidirectional one-to-many map? Lew <noone@lewscanon.com> - 2011-05-07 12:49 -0400
          Re: Concurrent bidirectional one-to-many map? Sebastian <sebastian@undisclosed.invalid> - 2011-05-07 21:34 +0200
      Re: Concurrent bidirectional one-to-many map? Patricia Shanahan <pats@acm.org> - 2011-05-07 06:40 -0700
        Re: Concurrent bidirectional one-to-many map? Tom Anderson <twic@urchin.earth.li> - 2011-05-08 04:51 +0100
          Re: Concurrent bidirectional one-to-many map? Robert Klemme <shortcutter@googlemail.com> - 2011-05-09 06:43 -0700
            Re: Concurrent bidirectional one-to-many map? Tom Anderson <twic@urchin.earth.li> - 2011-05-09 18:28 +0100
              Re: Concurrent bidirectional one-to-many map? Sebastian <sebastian@undisclosed.invalid> - 2011-05-09 22:57 +0200
                Re: Concurrent bidirectional one-to-many map? Lew <noone@lewscanon.com> - 2011-05-09 18:36 -0400
                Re: Concurrent bidirectional one-to-many map? Tom Anderson <twic@urchin.earth.li> - 2011-05-10 08:34 +0100
                Re: Concurrent bidirectional one-to-many map? Sebastian <sebastian@undisclosed.invalid> - 2011-05-11 10:09 +0200
                Re: Concurrent bidirectional one-to-many map? Sebastian <sebastian@undisclosed.invalid> - 2011-05-11 10:51 +0200
                Re: Concurrent bidirectional one-to-many map? Robert Klemme <shortcutter@googlemail.com> - 2011-05-11 04:55 -0700
                Re: Concurrent bidirectional one-to-many map? Lew <noone@lewscanon.com> - 2011-05-11 09:00 -0400
                Re: Concurrent bidirectional one-to-many map? Sebastian <sebastian@undisclosed.invalid> - 2011-05-11 20:47 +0200
      Re: Concurrent bidirectional one-to-many map? markspace <-@.> - 2011-05-07 09:35 -0700
      Re: Concurrent bidirectional one-to-many map? Michal Kleczek <kleku75@gmail.com> - 2011-05-09 16:42 +0200
  Re: Concurrent bidirectional one-to-many map? Roedy Green <see_website@mindprod.com.invalid> - 2011-05-07 03:46 -0700

csiph-web