On Thu, Nov 20, 2014 at 12:48 AM, Robert Jenks <rje...@universalbits.com> wrote:
> I am working to update Jav8 to the latest V8 APIs and get it working on
> Windows 32bit. I am not the maintainer, but I have been unable to contact
> them and need this working.
>
> I am having a problem creating a second Isolate. The first one works fine,
> but I get a crash when trying to initialize the second one. Here is the
> error:
>
>
>
> #
> # Fatal error in v8::HandleScope::CreateHandle()
> # Cannot create a handle without a HandleScope
> #
>
> The error occurs at:
> Context::global_object() ("this" is NULL)
> Context::native_context()
> Isolate::native_context()
> Execution::InstantiateFunction()
> Execution::InstantiateObject()
> ObjectTemplate::NewInstance()
> env.Wrap() (See call below)
>
>
>
> Here is the init code that runs when the Jav8 DLL is loaded
>
> jint JNICALL JNI_OnLoad(JavaVM *vm, void *reserved)
> {
> v8::V8::InitializeICU();
> v8::Platform* platform = v8::platform::CreateDefaultPlatform();
> v8::V8::InitializePlatform(platform);
> v8::V8::Initialize();
>
> return JNI_VERSION_1_2;
> }
>
>
> Here is the code that runs to create and init a new Isolate:
>
> jlong JNICALL Java_lu_flier_script_V8Context_internalCreateContext(JNIEnv
> *pEnv, jobject pObj)
> {
> jni::Jav8Context* jav8Context = new jni::Jav8Context();
> v8::Isolate* isolate = jav8Context->GetIsolate();
> v8::Isolate::Scope isolateScope(isolate);
> v8::HandleScope handleScope(isolate);
> v8::Handle<v8::Context> ctxt = v8::Local<v8::Context>::New(isolate,
> *jav8Context->GetContext());
> jni::V8Env env(pEnv, jav8Context);
> ctxt->Global()->Set(v8::String::NewFromUtf8(isolate, "__proto__"),
> env.Wrap(pObj));
> return PTR_TO_JLONG(jav8Context);
> }
>
>
> That code uses the following class for some of the init:
>
> class Jav8Context {
> public:
> Jav8Context() {
> // Create a new Isolate and make it the current one.
> isolate_ = v8::Isolate::New();
> v8::Isolate::Scope isolateScope(isolate_);
> isolate_->Enter();
> v8::HandleScope handleScope(isolate_);
> v8::Handle<v8::Context> ctxt = v8::Context::New(isolate_);
> ctxt->Enter();
> context_ = new v8::Persistent<v8::Context>(isolate_, ctxt);
> }
> ~Jav8Context() {
> context_->Reset();
> isolate_->Exit();
> isolate_->Dispose();
> }
> v8::Isolate* GetIsolate() {return isolate_;}
> v8::Persistent<v8::Context>* GetContext() {return context_;}
> private:
> v8::Isolate* isolate_;
> v8::Persistent<v8::Context>* context_;
> };
>
>
> Any advice would be greatly appreciated.
Can you post the source of V8Env? The stack trace suggests the issue
is with V8Env::Wrap().
Does the stack trace always originate from
Java_lu_flier_script_V8Context_internalCreateContext()?
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