Perl5Util threadsafe for group() method?

[Duke Tantiprasut <du...@gmail.com>]

Hi All,

Is there any plans to make getMatch() and group() threadsafe?

Duke

Re: Perl5Util threadsafe for group() method?

[Duke Tantiprasut <du...@gmail.com>]

Both will actually be the same for me. I just use the Perl5Util and dont
explicitly create matchers. The first option sounds like an easier way to go
as well as being easy for most people to understand.

On 3/29/06, Daniel F. Savarese <df...@savarese.org> wrote:
>
>
> In message <82...@mail.gmail.com>,
> "Duke
> Tantiprasut" writes:
> >Is there any plans to make getMatch() and group() threadsafe?
>
> They are thread-safe.  Concurrent calls to multiple methods will not leave
> the object in an inconsistent state.  What I think you're asking is for
> the results to be thread-local/thread-specific (i.e., for the last match
> found by the calling thread to be returned).  I'm in favor of making that
> change, but it may have to be a configurable option to avoid breaking
> existing code that depends on the existing behavior.  The alternatives
> are to only store a thread-local match result or to also create a separate
> matcher for each thread, which may actually be the better route as it
> would no longer be necessary for certain (or any?) methods to be
> synchronized.  But it would defeat the intention of having a low memory
> footprint (not that matchers hold a lot of state when not executing).
> We're not JDK 1.1 compatible anymore on account of using HashMap, so it's
> safe to use ThreadLocal.  Supporting J2ME would have required conditional
> compilation anyway and is still easy enough to work in should the demand
> arise.
>
> Is there a preference for just keeping the match results thread local and
> the methods synchronized or using a separate matcher for each thread
> without synchronization (access to the pattern cache would still have
> to be protected in a critical section)?
>
> daniel
>
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