[infinispan-dev] Time for a tryLock() ?

[Dan Berindei]

On Thu, Apr 26, 2012 at 3:09 PM, Manik Surtani <manik at jboss.org> wrote:
>
> On 26 Apr 2012, at 13:05, Dan Berindei wrote:
>
> What seems to be missing is an overload with a custom timeout, it may
> be useful to try locking with a shorter timeout in the first attempt
> (maybe even 0?) like we do for deadlock detection.
>
>
> There is a flag for that.
>
> https://github.com/infinispan/infinispan/blob/master/core/src/main/java/org/infinispan/context/Flag.java#L79
>

Forgot about that one :)
But still, it only allows a 0 timeout, so it's not exactly what I had
in mind - which would be a custom timeout per operation.

>
>
> But that is a bit orthogonal, as it would be useful for write
> operations as well, so maybe a 6.0 idea...
>
>
> On Thu, Apr 26, 2012 at 2:55 PM, Mircea Markus <mircea.markus at jboss.com>
> wrote:
>
> On 26 Apr 2012, at 14:42, Erik Salter wrote:
>
>
> FWIW, I implement a TryLock like this:
>
>
> boolean success = cache.getAdvancedCache()
>
>            .withFlags(Flag.FAIL_SILENTLY).lock(key);
>
>
> +1, this seems like solving the issue.
>
>
>
> Regards,
>
>
> Erik
>
>
> -----Original Message-----
>
> From: infinispan-dev-bounces at lists.jboss.org
>
> [mailto:infinispan-dev-bounces at lists.jboss.org] On Behalf Of Galder
>
> Zamarreño
>
> Sent: Thursday, April 26, 2012 6:59 AM
>
> To: Mircea Markus
>
> Cc: infinispan -Dev List
>
> Subject: [infinispan-dev] Time for a tryLock() ?
>
>
> Looks like rolling back the transaction when a lock timeout is encountered
>
> can be problematic: https://community.jboss.org/message/731307#731307
>
>
> Maybe time to implement a tryLock() that attempts to acquire the lock but
>
> does not rollback the transaction if it cannot acquire it?
>
>
> Thoughts?
>
> --
>
> Galder Zamarreño
>
> Sr. Software Engineer
>
> Infinispan, JBoss Cache
>
>
>
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> --
> Manik Surtani
> manik at jboss.org
> twitter.com/maniksurtani
>
> Lead, Infinispan
> http://www.infinispan.org
>
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