Thanks Ben.
I want to re-use my context for performance reasons, but some JavaScript
programs have constant global variables that cannot be re-defined, such as
those declared with let or const. To work around this, I thought I could
just evaluate each program in a closure by artificially enclosing the
script with {}. Do you see any issue with doing it? Is there any better
way to do so?
On Friday, May 11, 2018 at 5:50:07 AM UTC-7, Ben Noordhuis wrote:
>
> On Thu, May 10, 2018 at 10:24 PM, Jane Chen <jxch...@gmail.com
> <javascript:>> wrote:
> > Embedding v8 v5.3.
> >
> > Is there any way to reset global object for a context so that the
> context
> > can be re-used?
> >
> > How is Context::DetachGlobal() is meant to be used?
> >
> > Thanks,
> > Jane
>
> You can't reset a context but you can detach the global object and
> create a new context with it. It will revert to its pristine state in
> the new context. In a nutshell:
>
> auto global = old_context->Global();
> old_context->Exit(); // Need to exit the context before detaching.
> old_context->DetachGlobal();
> auto new_context = v8::Context::New(global->GetIsolate(),
> v8::Local<v8::ObjectTemplate>(), global);
>
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