wasm2c: atomic and shared mem operations using c11

[shravanrn]

Implement wasm2c atomic ops and shared memory ops with C11 atomics as discussed in #2268 (comment)

This is the first of several PRs to fully support the various primitives in the threads/shared_memory/atomics proposal.

[shravanrn]

@keithw @sbc100 any chance you could have a look at this? This is blocking for the next patch for wait/notify

[keithw]

Sure, can we finish tail calls and then land this?

[shravanrn]

Sure, can we finish tail calls and then land this?

@keithw Sure, let's kick off the the review process for now and we can coordinate before landing?

[keithw]

I'm definitely no shared-memory expert, but this looks pretty reasonable % comments.

[shravanrn]

@keithw @sbc100 Since we are waiting for the discussion on the other PRs, can we try landing this? If this looks good, could one of you sign off on this?

[sbc100]

Sorry I didn't get to looking at this yet. I will try to take a look in the morning (PST)

[shravanrn]

@keithw @sbc100 Happy new year all! :) Just a ping to have a look when you get the chance

[shravanrn]

@keithw @sbc100 Happy new year all! :) Just a ping to have a look when you get the chance

@keithw @sbc100 Bumping this up

[sbc100]

Apologies for taking so long to look at this one. Will try to get to it soon/today.

[shravanrn]

@keithw Just bumping this in your inbox. Please have a look at above questions when you have a chance.

[shravanrn]

@sbc100 @keithw Have made all the changes, could you please sign off on the review

[sbc100]

Thanks! I like this method much more, personally

[sbc100]

How about just calling calling these wasm-rt-impl-mem.c (so they share a common prefix with wasm-rt-impl.c?

[shravanrn]

Hmm... this would make it inconsistent with exceptions which is in wasm-rt-exceptions-impl.c. Happy to go with either, but we can maybe do this rename in a follow up PR to since we have to change multiple things