From ee0d482b326e9f3f414d8bd9fc657b244221cc19 Mon Sep 17 00:00:00 2001
From: Arne Morten Kvarving <arne.morten.kvarving@sintef.no>
Date: Tue, 6 Sep 2022 15:36:30 +0200
Subject: [PATCH] added: eclmpiserializer::append

this broadcasts from the root rank, and then appends
the results to existing data on the others
---
 ebos/eclmpiserializer.hh | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/ebos/eclmpiserializer.hh b/ebos/eclmpiserializer.hh
index c59f89931..37f67c39b 100644
--- a/ebos/eclmpiserializer.hh
+++ b/ebos/eclmpiserializer.hh
@@ -386,6 +386,25 @@ public:
         }
     }
 
+    //! \brief Serialize and broadcast on root process, de-serialize and append on
+    //! others.
+    //!
+    //! \tparam T Type of class to broadcast
+    //! \param data Class to broadcast
+    template<class T>
+    void append(T& data)
+    {
+        if (m_comm.size() == 1)
+            return;
+
+        T tmp;
+        T& bcast = m_comm.rank() == 0 ? data : tmp;
+        broadcast(bcast);
+
+        if (m_comm.rank() != 0)
+            data.append(tmp);
+    }
+
     //! \brief Returns current position in buffer.
     size_t position() const
     {