mirror of
https://github.com/rubyjs/therubyracer
synced 2023-03-27 23:21:42 -04:00
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
#include "rr.h"
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#include "external.h"
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namespace rr {
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void External::Init() {
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ClassBuilder("External").
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defineSingletonMethod("New", &New).
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defineMethod("Value", &Value).
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store(&Class);
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}
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VALUE External::New(VALUE self, VALUE r_isolate, VALUE object) {
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Isolate isolate(r_isolate);
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// as long as this external is alive within JavaScript, it should not be
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// garbage collected by Ruby.
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isolate.retainObject(object);
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Locker lock(isolate);
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// create the external.
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Container* container = new Container(object);
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v8::Local<v8::External> external(v8::External::New(isolate, (void*)container));
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// next, we create a weak reference to this external so that we can be
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// notified when V8 is done with it. At that point, we can let Ruby know
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// that this external is done with it.
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v8::Global<v8::External>* global(new v8::Global<v8::External>(isolate, external));
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global->SetWeak<Container>(container, &release, v8::WeakCallbackType::kParameter);
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container->global = global;
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return External(isolate, external);
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}
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VALUE External::Value(VALUE self) {
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External external(self);
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Locker lock(external);
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Container* container((Container*)external->Value());
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return container->object;
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}
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}
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