#1554: example: hack in test NOMERGE

examples/hello_world/hello_world.cc

@@ -42,15 +42,29 @@
 */
 
 #include <vt/transport.h>
+#include <vt/datarep/dr.h>
 
 struct HelloMsg : vt::Message {
-  HelloMsg(vt::NodeType in_from) : from(in_from) { }
+  HelloMsg(vt::NodeType in_from, vt::DataRepIDType handle_id)
+    : from(in_from),
+      handle_id_(handle_id)
+  { }
 
   vt::NodeType from = 0;
+  vt::DataRepIDType handle_id_ = vt::no_datarep;
 };
 
 static void hello_world(HelloMsg* msg) {
   vt::NodeType this_node = vt::theContext()->getNode();
+  fmt::print("{}: Hello from node {} (start)\n", this_node, msg->from);
+  auto han_id = msg->handle_id_;
+  vt::datarep::Reader<std::vector<double>> my_reader{han_id};
+  my_reader.fetch();
+  vt::theSched()->runSchedulerWhile([&]{ return not my_reader.isReady(); });
+  auto const& vec = my_reader.get();
+  for (auto&& elm : vec) {
+    vt_print(gen, "elm={}\n", elm);
+  }
   fmt::print("{}: Hello from node {}\n", this_node, msg->from);
 }
 
@@ -65,7 +79,12 @@ int main(int argc, char** argv) {
   }
 
   if (this_node == 0) {
-    auto msg = vt::makeMessage<HelloMsg>(this_node);
+    std::vector<double> my_vec;
+    for (int i = 0; i < 10; i++) {
+      my_vec.push_back(i*10);
+    }
+    auto my_dr = vt::theDR()->makeHandle(std::move(my_vec));
+    auto msg = vt::makeMessage<HelloMsg>(this_node, my_dr.getHandleID());
     vt::theMsg()->broadcastMsg<HelloMsg, hello_world>(msg);
   }