add nanomsg implementations + use factory for nanomsg + lots of small stuff

fairmq/FairMQPollerNN.cxx

@@ -0,0 +1,39 @@
+/**
+ * FairMQPollerNN.cxx
+ *
+ * @since 2014-01-23
+ * @author A. Rybalchenko
+ */
+
+#include <nanomsg/nn.h>
+
+#include "FairMQPollerNN.h"
+
+FairMQPollerNN::FairMQPollerNN(const vector<FairMQSocket*>& inputs)
+{
+  fNumItems = inputs.size();
+  items = new nn_pollfd[fNumItems];
+
+  for (int i = 0; i < fNumItems; i++) {
+    items[i].fd = inputs.at(i)->GetSocket(1);
+    items[i].events = NN_POLLIN;
+  }
+}
+
+void FairMQPollerNN::Poll(int timeout)
+{
+  nn_poll(items, fNumItems, timeout);
+}
+
+bool FairMQPollerNN::CheckInput(int index)
+{
+  if (items[index].revents & NN_POLLIN) 
+    return true;
+
+  return false;
+}
+
+FairMQPollerNN::~FairMQPollerNN()
+{
+  if (items != NULL) delete [] items;
+}