Re: Concurrent bidirectional one-to-many map?

From:
Lew <noone@lewscanon.com>
Newsgroups:
comp.lang.java.programmer
Date:
Wed, 11 May 2011 09:00:23 -0400
Message-ID:
<iqe195$eo9$3@news.albasani.net>
On 05/11/2011 04:51 AM, Sebastian wrote:

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?


Why have you never answered my questions about long locks?

You seem to be going through a lot of gyrations unnecessarily. Just lock the
data you need to lock.

It's kind of rude that you ask for help but don't respond to requests for
further information.

--
Lew
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