Introduce v8::Object::GetIsolate().

API=v8::Object::GetIsolate()
LOG=Y
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/617263003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24376 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

include/v8.h

@@ -2586,6 +2586,11 @@ class V8_EXPORT Object : public Value {
    */
   Local<Value> CallAsConstructor(int argc, Handle<Value> argv[]);
 
+  /**
+   * Return the isolate to which the Object belongs to.
+   */
+  Isolate* GetIsolate();
+
   static Local<Object> New(Isolate* isolate);
 
   V8_INLINE static Object* Cast(Value* obj);

src/api.cc

@@ -5608,6 +5608,12 @@ bool v8::String::CanMakeExternal() {
 }
 
 
+Isolate* v8::Object::GetIsolate() {
+  i::Isolate* i_isolate = Utils::OpenHandle(this)->GetIsolate();
+  return reinterpret_cast<Isolate*>(i_isolate);
+}
+
+
 Local<v8::Object> v8::Object::New(Isolate* isolate) {
   i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
   LOG_API(i_isolate, "Object::New");

test/cctest/test-api.cc

@@ -2824,6 +2824,16 @@ THREADED_TEST(EmbedderData) {
 }
 
 
+THREADED_TEST(GetIsolate) {
+  LocalContext env;
+  v8::Isolate* isolate = env->GetIsolate();
+  v8::HandleScope scope(isolate);
+  Local<v8::Object> obj = v8::Object::New(isolate);
+  CHECK_EQ(isolate, obj->GetIsolate());
+  CHECK_EQ(isolate, CcTest::global()->GetIsolate());
+}
+
+
 THREADED_TEST(IdentityHash) {
   LocalContext env;
   v8::Isolate* isolate = env->GetIsolate();
@@ -22948,6 +22958,7 @@ TEST(Promises) {
   Handle<v8::Promise::Resolver> rr = v8::Promise::Resolver::New(isolate);
   Handle<v8::Promise> p = pr->GetPromise();
   Handle<v8::Promise> r = rr->GetPromise();
+  CHECK_EQ(isolate, p->GetIsolate());
 
   // IsPromise predicate.
   CHECK(p->IsPromise());