Added stop() method to java object.

It breaks the internal indefinite loop and allows Node process to quit without SIGTERM.

 Solves bug joeferner#539 - The process refuses to quit.

Author: jjuzna

src/java.cpp

@@ -106,6 +106,7 @@ void uvAsyncCb_dynamicProxyJsCall(uv_async_t *handle) {
   Nan::SetPrototypeMethod(t, "getStaticFieldValue", getStaticFieldValue);
   Nan::SetPrototypeMethod(t, "setStaticFieldValue", setStaticFieldValue);
   Nan::SetPrototypeMethod(t, "instanceOf", instanceOf);
+  Nan::SetPrototypeMethod(t, "stop", stop);
 
   Nan::Set(target, Nan::New<v8::String>("Java").ToLocalChecked(), Nan::GetFunction(t).ToLocalChecked());
 
@@ -1239,6 +1240,10 @@ NAN_METHOD(Java::instanceOf) {
   info.GetReturnValue().Set(Nan::New<v8::Boolean>(res));
 }
 
+NAN_METHOD(Java::stop) {
+  uv_close((uv_handle_t *)&uvAsync_dynamicProxyJsCall, NULL);
+}
+
 template <typename T>
 std::string to_string(T value) {
   std::ostringstream os;

src/java.h

@@ -56,6 +56,7 @@ class Java : public Nan::ObjectWrap {
   static NAN_METHOD(getStaticFieldValue);
   static NAN_METHOD(setStaticFieldValue);
   static NAN_METHOD(instanceOf);
+  static NAN_METHOD(stop);
   static NAN_GETTER(AccessorProhibitsOverwritingGetter);
   static NAN_SETTER(AccessorProhibitsOverwritingSetter);
   v8::Local<v8::Value> ensureJvm();