C++ 如何使用多个v8:：Context正确重用全局_对象？

我正在用OpenGL实现重构我的V8，但在执行上下文中遇到了一个问题

概念如下：

• V8GL:：initialize（）

  此方法初始化上下文和全局模板。它还使用glut的上下文，因为运行的几个循环也暴露于JS上下文。（例如，

  glut.mainLoop（）

  ）

• V8GL:：执行（上下文、源、url）

  此方法主要在给定上下文中执行字符串。我认为以后使用间隔/超时时必须采用这种方式

什么不起作用：

V8GL::initialize(...) {
    v8::Persistent<v8::Context> context = v8::Context::New(NULL, globalTemplate);
    v8::Context::Scope context_scope(context);

    // cached for glut mainLoop etc.
    GlutFactory::context_ = v8::Persistent<v8::Context>::New(context);

    execute(context, v8::String::New(...script content...), v8::String::New(...script url path to show for exception stacktraces...);


    // after all the stuff was dispatched to the global context, I want to cache the global object for later usage.
    v8gl::global = v8::Persistent<v8::Object>::New(context->Global());
    context->DetachGlobal();
    context.Dispose();

}

V8GL::execute(context, source, filename) {

    v8::HandleScope scope;
    // Previously, I had v8::Context::Scope(context) in here.
    v8::Local<v8::Script> script = v8::Script::Compile(source, filename);

}

V8GL:：initialize（）

还附加内置JavaScript文件并执行它们。那很好用

简化代码：

V8GL::initialize(...) {
    v8::Persistent<v8::Context> context = v8::Context::New(NULL, globalTemplate);
    v8::Context::Scope context_scope(context);

    // cached for glut mainLoop etc.
    GlutFactory::context_ = v8::Persistent<v8::Context>::New(context);

    execute(context, v8::String::New(...script content...), v8::String::New(...script url path to show for exception stacktraces...);


    // after all the stuff was dispatched to the global context, I want to cache the global object for later usage.
    v8gl::global = v8::Persistent<v8::Object>::New(context->Global());
    context->DetachGlobal();
    context.Dispose();

}

V8GL::execute(context, source, filename) {

    v8::HandleScope scope;
    // Previously, I had v8::Context::Scope(context) in here.
    v8::Local<v8::Script> script = v8::Script::Compile(source, filename);

}

问题：

V8GL::initialize(...) {
    v8::Persistent<v8::Context> context = v8::Context::New(NULL, globalTemplate);
    v8::Context::Scope context_scope(context);

    // cached for glut mainLoop etc.
    GlutFactory::context_ = v8::Persistent<v8::Context>::New(context);

    execute(context, v8::String::New(...script content...), v8::String::New(...script url path to show for exception stacktraces...);


    // after all the stuff was dispatched to the global context, I want to cache the global object for later usage.
    v8gl::global = v8::Persistent<v8::Object>::New(context->Global());
    context->DetachGlobal();
    context.Dispose();

}

V8GL::execute(context, source, filename) {

    v8::HandleScope scope;
    // Previously, I had v8::Context::Scope(context) in here.
    v8::Local<v8::Script> script = v8::Script::Compile(source, filename);

}

• 我是否必须缓存global的objectTemplate以便与

  v8:：Context:：New（）

  一起使用
• 全局_对象必须是持久的还是局部的
• 我如何重复使用它？

  DetachGlobal（）

  和

  resattachglobal（）

  这两个东西只适用于一个上下文，而不适用于多个上下文。我的案例需要多个上下文