From 6d4909c74dbcaebc6c5b0513361654987ece6323 Mon Sep 17 00:00:00 2001
From: Eremey Valetov <eremey@valetov.com>
Date: Mon, 16 Feb 2026 18:14:35 -0500
Subject: [PATCH] feat(smp): add SerializableBase wrapper for MPI population
 transfer

Template wrapper making any type T serializable via eoserial::Persistent,
required for transferring populations between MPI ranks in the island model.
---
 smp/src/SerializableBase.h   | 59 ++++++++++++++++++++++++++++++++++++
 smp/src/SerializableBase.tpp | 46 ++++++++++++++++++++++++++++
 smp/src/smp.h                |  1 +
 3 files changed, 106 insertions(+)
 create mode 100644 smp/src/SerializableBase.h
 create mode 100644 smp/src/SerializableBase.tpp

diff --git a/smp/src/SerializableBase.h b/smp/src/SerializableBase.h
new file mode 100644
index 000000000..aeda44f80
--- /dev/null
+++ b/smp/src/SerializableBase.h
@@ -0,0 +1,59 @@
+/*
+<SerializableBase.h>
+Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2012
+
+Eremey Valetov
+
+This software is governed by the CeCILL license under French law and
+abiding by the rules of distribution of free software.  You can  use,
+modify and/ or redistribute the software under the terms of the CeCILL
+license as circulated by CEA, CNRS and INRIA at the following URL
+"http://www.cecill.info".
+
+In this respect, the user's attention is drawn to the risks associated
+with loading,  using,  modifying and/or developing or reproducing the
+software by the user in light of its specific status of free software,
+that may mean  that it is complicated to manipulate,  and  that  also
+therefore means  that it is reserved for developers  and  experienced
+professionals having in-depth computer knowledge. Users are therefore
+encouraged to load and test the software's suitability as regards their
+requirements in conditions enabling the security of their systems and/or
+data to be ensured and,  more generally, to use and operate it in the
+same conditions as regards security.
+The fact that you are presently reading this means that you have had
+knowledge of the CeCILL license and that you accept its terms.
+
+ParadisEO WebSite : http://paradiseo.gforge.inria.fr
+Contact: paradiseo-help@lists.gforge.inria.fr
+*/
+
+#ifndef SERIALIZABLE_BASE_H
+#define SERIALIZABLE_BASE_H
+
+#include <serial/eoSerial.h>
+#include <string>
+
+/**
+ * Wrapper that makes any type T serializable via ParadisEO's eoserial framework.
+ * Used by MPI_IslandModel to serialize/deserialize populations for inter-process transfer.
+ */
+template<class T>
+class SerializableBase : public eoserial::Persistent {
+public:
+    SerializableBase();
+    SerializableBase(T base);
+    virtual ~SerializableBase();
+
+    operator T&();
+    void setValue(const T& newValue);
+
+    void unpack(const eoserial::Object* obj) override;
+    eoserial::Object* pack() const override;
+
+private:
+    T _value;
+};
+
+#include "SerializableBase.tpp"
+
+#endif // SERIALIZABLE_BASE_H
diff --git a/smp/src/SerializableBase.tpp b/smp/src/SerializableBase.tpp
new file mode 100644
index 000000000..a5e7472b6
--- /dev/null
+++ b/smp/src/SerializableBase.tpp
@@ -0,0 +1,46 @@
+/*
+<SerializableBase.tpp>
+Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2012
+
+Eremey Valetov
+
+This software is governed by the CeCILL license under French law and
+abiding by the rules of distribution of free software.  You can  use,
+modify and/ or redistribute the software under the terms of the CeCILL
+license as circulated by CEA, CNRS and INRIA at the following URL
+"http://www.cecill.info".
+
+ParadisEO WebSite : http://paradiseo.gforge.inria.fr
+Contact: paradiseo-help@lists.gforge.inria.fr
+*/
+
+template<class T>
+SerializableBase<T>::SerializableBase() : _value() {}
+
+template<class T>
+SerializableBase<T>::SerializableBase(T base) : _value(std::move(base)) {}
+
+template<class T>
+SerializableBase<T>::~SerializableBase() = default;
+
+template<class T>
+SerializableBase<T>::operator T&() {
+    return _value;
+}
+
+template<class T>
+void SerializableBase<T>::setValue(const T& newValue) {
+    _value = newValue;
+}
+
+template<class T>
+void SerializableBase<T>::unpack(const eoserial::Object* obj) {
+    eoserial::unpack(*obj, "value", _value);
+}
+
+template<class T>
+eoserial::Object* SerializableBase<T>::pack() const {
+    eoserial::Object* obj = new eoserial::Object;
+    obj->add("value", eoserial::make(_value));
+    return obj;
+}
diff --git a/smp/src/smp.h b/smp/src/smp.h
index 7bfb17864..12d76b3d4 100644
--- a/smp/src/smp.h
+++ b/smp/src/smp.h
@@ -32,6 +32,7 @@ Contact: paradiseo-help@lists.gforge.inria.fr
 
 #include <MWModel.h>
 #include <scheduler.h>
+#include <SerializableBase.h>
 #include <islandModel.h>
 #include <islandModelWrapper.h>
 #include <island.h>