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Subject: Re: [tm-languages] Next transactional memory meeting
From: Hans Boehm (boehm_at_[hidden])
Date: 2019-05-26 23:38:08


Let's try for June 3. If that doesn't work, we'll revisit.

On Sun, May 26, 2019 at 6:16 PM Michael Spear <mfs409_at_[hidden]> wrote:

> Hi Hans,
>
> I won't be able to make a call tomorrow. I'm travelling on the 3rd of
> June, but might still be able to make the call. June 10th I will
> definitely be available.
>
> - Mike
>
> On Fri, May 24, 2019 at 1:24 AM Hans Boehm <boehm_at_[hidden]> wrote:
>
>> Please make sure that you are subscribed to sg5_at_lists.isocpp.org. In
>> case you missed it, we switched mailing lists!
>>
>> We failed to get a quorum on April 29. The next meeting is currently
>> scheduled for Monday, May 27, Memorial Day in the US. I doubt we will get a
>> quorum then either.
>>
>> Can we delay this meeting (only) by a week, and try for June 3? If you're
>> a regular attendee, please let me know if you can or cannot make a meeting
>> on the 3rd, at the usual time.
>>
>> Hans
>>
>> On Sun, Apr 28, 2019 at 9:00 PM Hans Boehm <boehm_at_[hidden]> wrote:
>>
>>>
>>> We are meeting tomorrow April 29th at noon PDT, usual coordinates:
>>>
>>> Join Hangouts Meet
>>> meet.google.com/sbj-cvgh-vnd
>>> Join by phone
>>> ‪+1 208-925-0196‬ PIN: ‪255 542‬#
>>>
>>> The topic will continue to be the TM-lite proposal.
>>>
>>> Notes from March 25:
>>> -----------------------------
>>>
>>> Attendees: Jade Alglave, Hans Boehm, Michael Scott, Michael Spear,
>>> Victor Luchangco
>>>
>>> Discussed Victor's additions to
>>>
>>> M Spear: Synchronized instead?
>>>
>>> Victor: No, want atomic block.
>>>
>>> M Spear: Want to be able to use STL, e.g. map in transaction.
>>>
>>> Hans: trade-off, non constexpr makes it implementation defined
>>>
>>> Victor: Want nested transactions
>>>
>>> M Spear: Should allow proper software engineering in transactions.
>>>
>>> Victor: Should look at what's really allowed in constexpr.
>>>
>>> M Spear: Want everything visible in translation unit to be allowed.
>>>
>>> Hans : trade-off against portability. Constexpr growing.
>>>
>>> M Spear: Not for simplifying implementation. Single global lock always
>>> works.
>>>
>>> All: Aim for subset of atomic_noexcept.
>>>
>>> Do we need to catch transaction-unsafe code that's never executed?
>>>
>>> Hans: Previously decided on undefined behavior when executing
>>> transaction-unsafe code.
>>>
>>> M Scott: Is SGL with no checks conforming?
>>>
>>> Allow either detection or simple SGL?
>>>
>>> M Spear: Real challenge is getting users. This is simpler than existing
>>> implementations.
>>>
>>> M Scott: 2 possible implementations:
>>> HTM-centric plus diagnosis
>>> SGL with no diagnosis
>>>
>>> M Scott: Should warn, but not for atomics
>>>
>>> M Spear: Should prohibit volatile, atomics, inline assembly
>>>
>>> Victor: What about IO?
>>>
>>> M Scott: Don't want to require diagnosis for unexecuted code.
>>>
>>> Jade: Lock-free?
>>>
>>> Victor: Want to allow SGL for now
>>>
>>> Meet next time as scheduled, on April 29.
>>>
>>> --
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>> <https://groups.google.com/d/msgid/tm-languages/CAPUmR1adjFD6n5MtSmz2L_3qzC8kwePTD-tBLYqZLC5eaWTP2Q%40mail.gmail.com?utm_medium=email&utm_source=footer>
>> .
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>>
> --
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> <https://groups.google.com/d/msgid/tm-languages/CAHFPyjCXGjbuqVv%3DsicLyCRovcHwwpB-w6JcV%2ByLP9TrGG3PUA%40mail.gmail.com?utm_medium=email&utm_source=footer>
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