P1478R1 Byte-wise atomic memcpy (Hans-J. Boehm)

We want another name composed from some combination of {atomic, byte-wise,
race-free, read/write}_memcpy with a veto if it's bad.
-Unanimous consent.

P1478R2 Byte-wise atomic memcpy (Hans Boehm)

SG1 in Belfast.

With changes to the wording requested in the minutes,
we forward P1478R2 to LEWG for Concurrency TS 2:
SF F N A SA
3 10 0 0 0
Unanimous consent

P1478R3 Byte-wise atomic memcpy (Hans Boehm)

P1478R3: Byte-wise atomic memcpy

2020-06-01 Library Evolution Telecon Minutes

Chair: Billy Baker

Champion: Hans Boehm

Minute Taker: Inbal Levi

Start: 2020-06-01 08:02

POLL: P1478 (Byte-wise atomic memcpy) should include a type-safe (std::copy analog) version

Attendance: 24

That has no consensus.

POLL: The design of P1478 (Byte-wise atomic memcpy) is acceptable for continued Library Evolution time.

Attendance: 24

We have unanimous consent for that.

End: 2020-06-01 09:03

SUMMARY: This paper proposes a byte-wise atomic memcpy interface. Library Evolution feels this is a useful feature worth pursuing. Much of our discussion centered around whether the interface should be std::memcpy-like (e.g. byte-centric) or std::copy like (which provides better type safety). There was a related discussion about possible C compatibility, which would need a std::memcpy-like interface. In the end, we did not have consensus for adding a std::copy-like interface to the proposal, because this is a lower-level feature. We need to see and review a version of the proposal with wording before this can proceed further.

OUTCOME: Bring a revision of P1478R3 (Byte-wise atomic memcpy), with the guidance below, to Library Evolution for further design review.

• Add wording including a synopsis.
• Clarify that this feature should live in <atomic>
• Clarify atomic_(load|store)_per_byte_memcpy should return void.
• Make the source parameters pointers-to-const.
• Explore C compatibility with the Standard C committee.

P1478R4 Byte-wise atomic memcpy (Hans Boehm)

P1478R5 Byte-wise atomic memcpy (Hans Boehm)

P1478R5: Byte-wise atomic memcpy

2020-11-30 Library Evolution Telecon Minutes

Chair: Nevin Liber

Champion: Hans Boehm

Minute Taker: Inbal Levi

POLL: Forward P1478R6 (Byte-wise atomic memcpy) to electronic polling for sending to LWG for the inclusion in the Concurrency TS2, pending initial wording approval by Tomasz Kaminski.

Attendance: 25

WA: Since it’s a library addition, I would like to see implementation with useful use case

Author's Position: SF

Outcome: Consensus for forwarding to electric poll.

2021-01-25 Library Evolution Telecon

P1478R6: Byte-wise atomic memcpy

2021-01-25 Library Evolution Telecon Minutes

Chair:

Champion:

Minute Taker:

Outcome

We will proceed with electronic balloting of P1478R6 (Byte-wise atomic memcpy) as planned.

2021 Winter Library Evolution Polls

P2333: 2021 Winter Library Evolution Poll Outcomes

POLL 9: Send P1478R6 (Byte-wise Atomic memcpy) to LWG for the Concurrency TS v2, classified as an addition (P0592R4 bucket 3 item).

Outcome: Consensus in favor.

Outcome

Send P1478R6 (Byte-wise Atomic memcpy) to LWG for the Concurrency TS v2, classified as an addition (P0592R4 bucket 3 item).

P1478R7 Byte-wise atomic memcpy (Hans Boehm)

P1478R8 Byte-wise atomic memcpy (Hans Boehm)

Late status update:

LWG saw this paper in Kona and approved for concurrency TS2

https://wiki.edg.com/bin/view/Wg21kona2022/LWG20221109-EA

This was moved at plenary and approved:

https://wiki.edg.com/bin/view/Wg21kona2022/StrawPolls

This was voted into the Concurrency v2 working paper in Kona 2022, and is present in https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/n4953.pdf