Hi all,
I am customizing the FunctionTemplate of a constructor, so that the
constructed objects have the necessary bindings. However, I still
have
my C++ callback called by the js constructor, so that I can create
the
native part and set the object's internal fields.
Here is how I create the constructor
Handle<FunctionTemplate> ctor =
FunctionTemplate::New(jsCtorCallback,
External::New(userdata));
Handle <ObjectTemplate> objTempl = ctor->PrototypeTemplate();
customizeObjectTemplate(objTempl);
I cache objTempl to a Persistent<ObjectTemplate> handle in my app, so
that I can avoid re-creating the template eveyr time the ctor is
called.
Later, from inside the the ctor callback, I try to create the object
with:
objTempl->NewInstance();
However, when the constructor callback returns, the app crashes with
access violation. It seems I am doing it wrong, but what exactly?
P.S.
Seems the problem is unrelated to the function. If I create an
ordinary object template:
Persistent<ObjectTemplate> objt(ObjectTemplate::New());
customizeObjectTemplate(objt);
in the place where I obtained one from the constructor function, and
then store the persistent handle, using it later results in the same
crash.
However, if I write the above 2 lines in the ctor callback itself,
when constructing the object, that is - if I construct the object via
a freshly created and customized object template, everything works
fine. I am using this 'caching' with an initially-created template, to
optimize performance. But if I don't find the cause for the crash I
will create the template every time the ctor is called.
Any ideas?
Alex
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