如何使用C ++中的V8同时运行一堆JS代码？

Question

I have to process whole bunch of JS scripts using C++ wrapper around V8 and I need to do it in parallel.

For example, I have two scripts A and B. I've compiled these scripts using C++ V8 functions and want to run it in parallel or at least in async way, so that script B does not wait when script A will be finished.

Now I am thinking to use threads, but in this case I have to use mutex, and that means the code will run consequentially (not what I want at all).

Maybe there is some ability to run js code asynchronously from C++ using V8.. Anyway, is there is any way I could run several scripts and they will work in parallel ?

Answer 1

In order to execute two threads of javascript simultaneously, they must be in different v8::Isolate's. This means they cannot share any data or have any shared dependencies.

This also requires the use of v8::Locker, to lock an isolate from being used by another context while it runs.

Whether you use additional mutexes is up to you program's data requirements, but is not required for running multiple threads of execution within v8 -- just an isolate per thread.