Re: One-shot semantics in GHC event manager

I haven't had a chance to dig into Ben's patch yet, but I expect it will accepted soon - I don't think the change will affect performance. Austin, would it be possible to get a relatively minor change to the event manager into 7.8.4? It may change a semi-public API under GHC.Event, but will not change any public API. What is our time window? Andi On Fri, Oct 17, 2014 at 8:34 AM, Bas van Dijk wrote:

Hi Ben, Austin,

Is there any chance of Ben's event manager patch landing in GHC-7.8.4?

Bas

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Ben Gamari writes:

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Andreas Voellmy writes:

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On Sat, Oct 11, 2014 at 12:17 PM, Ben Gamari wrote:

Ah... so this is not useful to you. I guess we could add `loop` to GHC.Event's export list. On the other hand, I like your LifeTime

On 13 October 2014 21:05, Ben Gamari wrote: proposal

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better and then no one needs `loop`, so let's try this first.

I have a first cut of this here [1]. It compiles but would be I shocked if it ran. All of the pieces are there but I need to change EventLifetime to a more efficient encoding (there's no reason why it needs to be more than an Int).

As it turns out the patch seems to get through the testsuite after a few minor fixes.

What other tests can I subject this to? I'm afraid I don't have the access to any machine even close to the size of those that the original event manager was tested on so checking for performance regressions will be difficult.

Cheers,

- Ben

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