Design a poll-based interface

[axic]

In case WASM will not support asynchronous methods we might need to take an alternative approach.

A simple way is to have each operation work with polling, storageLoad would become:

• ethereum.storageLoad(args)
• ethereum.storageLoadResult() -> i32 (where 1 means result is written to the specified memory location)

And the following pseudocode in WASM:

ethereum.storageLoad()
do { 
  result = ethereum.storageLoadResult()
} while(!result)

The JS interface would need to do the sleep then. It's not efficient at all, but there's no way to sleep in WASM.

[wanderer]

related WebAssembly/design#720

[wanderer]

The JS interface would need to do the sleep then.

I think This is really more an implementation problem with the current JS prototype. We can assume that other implementations have full control over their VM

[wanderer]

related WebAssembly/design#720

[wanderer]

also an alternative would be to use a callback based interface #48

[wanderer]

related ewasm/ewasm-kernel#2