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From: Andrea Bernardini <andrebask@gmail.com>
To: Duncan Mak <duncanmak@gmail.com>
Cc: Per Bothner <per@bothner.com>, kawa mailing list <kawa@sourceware.org>
Subject: Re: First-class continuations in Kawa
Date: Wed, 21 Feb 2018 00:21:00 -0000	[thread overview]
Message-ID: <CAPFJfssx_4j2FSmnkx4sQapOK4Xq_D-sopODJZGheO=cBm0Xqw@mail.gmail.com> (raw)
In-Reply-To: <CAPFJfssefE2Z0bt9PWMfkJEWc7WBTb_aZPJJFkZQk4MLKnRreg@mail.gmail.com>

Hi All,
Regarding delimited continuations, you can see the needed changes here
https://gitlab.com/andrebask/Kawa/compare/callcc...delimited-continuations

Let me know if you are interested in this at all, shouldn't be
difficult to add this once Duncan's pull request is merged in.

In the same fork there's also a branch with the debugger
implementation, however I'm not sure how useful that could be, it was
quite experimental

Thanks,
Andrea

On 20 January 2018 at 23:20, Andrea Bernardini <andrebask@gmail.com> wrote:
> Yep, that's it. The whole work was originally submitted as patch.
>
> It is also my fault If this was never merged into master. I remember
> that I started working on a switch-based variant of my work after
> getting some high level suggestions from Per. That turned out to be a
> fair amount of work and I didn't have much time, so I didn't manage to
> put together anything working.
>
> I also have some working code that I mentioned in my thesis but didn't
> end up in that patch, as it wasn't well tested. This was mainly for
> delimited continuations and for the debugger. I'll share this soon in
> a GitLab fork so it doesn't get lost.
>
> Andrea
>
> On 20 January 2018 at 16:06, Duncan Mak <duncanmak@gmail.com> wrote:
>> Looks interesting.
>>
>> Is the work contained in only these two commits?
>>
>> https://gitlab.com/kashell/Kawa/commit/a8e678ebf7216e9fad9238e0b1c2442ea371c63c
>> https://gitlab.com/kashell/Kawa/commit/f4228b57936de5a84dba0afcfac54196bec86fa4
>>
>>
>> Duncan.
>>
>>
>> On Sat, Jan 20, 2018 at 1:46 AM, Per Bothner <per@bothner.com> wrote:
>>> On 01/19/2018 04:48 PM, Duncan Mak wrote:
>>>>
>>>> Hello,
>>>>
>>>> I came across Andrea Bernardini's thesis called First-Class
>>>> Continuations on the Java Virtual Machine: An Implementation within
>>>> the Kawa Scheme Compiler just the other day.
>>>>
>>>>
>>>> https://www.politesi.polimi.it/bitstream/10589/108685/3/2015_07_Bernardini.pdf
>>>>
>>>> What happened to that work, was it integrated into the mainline release of
>>>> Kawa?
>>>
>>>
>>> Sorry, no. Andrea's work is available in the 'callcc' branch, but it has not
>>> been merged into master.  Worse, updates to master have not been merged
>>> into the callcc branch.
>>>
>>> It would be useful to at least update the callcc branch with recent changes,
>>> and then test, evaluate, and benchmark it. If it is useful, it should be
>>> merged in.
>>> Even if it is slow, as long as it doesn't hurt the default behavior.  It is
>>> my fault
>>> that hasn't been done, but there were always other things to do.
>>>
>>> Long time ago, I started on another implementation of continuations based on
>>> switch statements.  (Each continuation point would be associated with an
>>> index,
>>> and each function would start with a switch statement with jumps to the
>>> continuation points. Capturing a continuation would essentially be saving
>>> the
>>> corresponding switch index.)  Some of that code is still in Kawa, but
>>> commented out.  Following up on that idea might be more efficient.  Which
>>> isn't really a good excuse for not merging in Andrea's work.
>>>
>>> If someone is interested in following up on this work, that would be great.
>>> --
>>>         --Per Bothner
>>> per@bothner.com   http://per.bothner.com/
>>
>>
>>
>> --
>> Duncan.

  reply	other threads:[~2018-02-21  0:21 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-20  0:49 Duncan Mak
2018-01-20  6:47 ` Per Bothner
2018-01-20 16:07   ` Duncan Mak
2018-01-20 23:20     ` Andrea Bernardini
2018-02-21  0:21       ` Andrea Bernardini [this message]
2018-02-22  0:38         ` Duncan Mak
2021-05-01 16:15           ` Duncan Mak
2021-05-01 18:45             ` Arvydas Silanskas
2021-05-01 19:06               ` Sudarshan S Chawathe
2021-05-01 20:38                 ` Per Bothner
2021-06-09  9:04                   ` Arvydas Silanskas
2021-06-09 23:27                     ` Per Bothner
2021-08-08 14:29                       ` Arvydas Silanskas
2021-08-08 15:53                         ` Andrea Bernardini
2021-08-08 23:52                         ` Per Bothner
2021-08-09 19:41                           ` Per Bothner
2022-12-07 23:42                             ` Duncan Mak
2022-12-09 10:53                               ` Arvydas Silanskas

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