https://issues.dlang.org/show_bug.cgi?id=20837

Hiroki Noda <kubo39@gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |kubo39@gmail.com

--- Comment #1 from Hiroki Noda <kubo39@gmail.com> ---
FYI: memory_order_consume is temporarily discouraged. http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0371r1.html

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https://issues.dlang.org/show_bug.cgi?id=20837

--- Comment #2 from Witold Baryluk <witold.baryluk+d@gmail.com> ---
Hiroki,

yes, you are right, I did Hans Boehm other papers, but I did miss this one. To make memory_order_consume worthwile and actually do something better than memory_order_acquire it requires extra support from compiler (including possibly annotations for killing dependencies) and defining precisely how it work. This is missing right now (the current specification is not workable, and not possible to really implement in compilers).

So, yes, to be postponed. And I guess, it is good phobos core.atomics and LLVM didn't blindly pick it up.

Will close it for the time being.

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https://issues.dlang.org/show_bug.cgi?id=20837

Witold Baryluk <witold.baryluk+d@gmail.com> changed:

           What    |Removed                     |Added
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           Priority|P3                          |P5
           Severity|enhancement                 |minor

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https://issues.dlang.org/show_bug.cgi?id=20837

Witold Baryluk <witold.baryluk+d@gmail.com> changed:

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |WONTFIX

--- Comment #3 from Witold Baryluk <witold.baryluk+d@gmail.com> ---
Lets ignore it. Consume is too complex to be really implementable at this point, it requires very sophisticated machinery in compiler to even be possible to done correctly.

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