Updating async_wrap in 0.12.x

[AndreasMadsen]

How likely is it that the async_wrap implementation in 0.12.x will get updated to correspond to that in 5.x.x / master.

AsyncWrap is an undocumented feature and has it own life outside semver. Because of this it is continuously updated in 4.x.x (see: nodejs/Release#59), but what about 0.12.x?

I'm asking because I got an issue about getting my long-stack-trace module to work in 0.12.x, see: AndreasMadsen/trace#20. This will not be possible without the latest features.

[mscdex]

/cc @trevnorris

[MylesBorins]

@AndreasMadsen I'm adding this to the LTS agenda to be discussed.

/cc @jasnell @rvagg

[jasnell]

I would say that getting the async_wrap stuff into v0.12 is unlikely at this point. We're currently working on getting the impl in v4 in sync with v5 and master but beyond that getting things sync'd up for v0.12 would be a fairly large change

[trevnorris]

I'm not 100% sure it'd be possible to backport to v0.12. After we've hammered async wrap out before it's "official" I'll be happy to at least take a look at how difficult it would be to backport.

[rvagg]

I agree that it's unlikely. We should discuss at an LTS meeting though because I suspect that we'll have agreement that it's not going to happen, saving @trevnorris the effort of looking at it.

[rvagg]

Actually .. It's probably worth pulling in @nodejs/tracing to this discussion too so it's not purely an LTS question—there's two issues here: (1) LTS policy and (2) effort, the LTS WG should probably stick to questions of policy and if we can partition it like that then it's up to @nodejs/tracing (well .. @trevnorris effectively) to answer the question of effort.

[AndreasMadsen]

Looks like this was discussed at the LTS WG Meeting 2015-01-11, was there a resolution?

[mhdawson]

Discussed in latest LTS WG meeting. Async wrap in 0.12.X is far from the latest so the risk is too high so we don't think this should happen, closig