V8 adds support for top-level await

Re:V8 adds support for top-level await by nitely on Wednesday September 25, 2019 @01:56PM (#21073313)

First look up the definition of a lock and mutual exclusion. There are two types of basic locks: mutexes and semaphores. Both keep two threads or coroutines from executing a block of code/instructions at the same time, and both work in a similar way I already described.

> There simply is no concurrency in JS though,

There is no parallelism in JS (well there is with workers now), concurrency is not parallelism.

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Re:V8 adds support for top-level await by wayneftw on Wednesday September 25, 2019 @05:07PM (#21075486)

Show me a piece of code where you think you need locks I guess.

I will concede that I got the two terms confused, mostly because I haven’t had to think about this kind of stuff in years because there’s literally nothing I’ve ever had to do with JavaScript that’s required me to think about it.

But I’d really love to see some code where you can’t handle concurrently waiting coroutine priorities in a single threaded world. Concurrency without parallelism is not really a problem the way I see it.

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