Suppose I have the following piece of code
bool run (void)
{
HandleScope hande_scope;
Handle<String> source;
Local<Script> script;
Persistent<Context> context;
context = Context::New();
Context::Scope context_scope(context);
script = Script::Compile("var a = 1; var b = 2;");
Local<Value> result = script->Run();
if (result.IsEmpty())
return false;
else
return true;
}
Is it true that one cannot execute this code using multiple threads? It seems like HandleScope
is not designed to be used in multithreaded applications. I can use the v8::Locker
and v8::Unlocker
methodes but that would always give me execution traces as this:
t1: a = 1
t1: b = 2
t2: a = 1
t2: b = 2
I hope someone can give me a hint on getting this code multithreaded so that a possible execution trace could like this:
t1: a = 1
t2: a = 1
t1: b = 2
t2: b = 2
According to v8 issue 510 , a feature called "Isolates" was added to the trunk some months back. This should allow multiple (non-interacting) instances of v8 in a single process.
Look at this post . The v8 engine has a Locker class, that lets you preempt your code. With this you can use multiple threads.
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