--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Core/FileStorage/MemoryStorageArea.cpp	Tue Jun 05 15:46:02 2018 +0200
@@ -0,0 +1,119 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2018 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "../PrecompiledHeaders.h"
+#include "MemoryStorageArea.h"
+
+#include "../OrthancException.h"
+
+namespace Orthanc
+{
+  MemoryStorageArea::~MemoryStorageArea()
+  {
+    for (Content::iterator it = content_.begin(); it != content_.end(); ++it)
+    {
+      if (it->second != NULL)
+      {
+        delete it->second;
+      }
+    }
+  }
+    
+  void MemoryStorageArea::Create(const std::string& uuid,
+                                 const void* content,
+                                 size_t size,
+                                 FileContentType type)
+  {
+    boost::mutex::scoped_lock lock(mutex_);
+
+    if (size != 0 &&
+        content == NULL)
+    {
+      throw OrthancException(ErrorCode_NullPointer);
+    }
+    else if (content_.find(uuid) != content_.end())
+    {
+      throw OrthancException(ErrorCode_InternalError);
+    }
+    else
+    {
+      content_[uuid] = new std::string(reinterpret_cast<const char*>(content), size);
+    }
+  }
+
+  
+  void MemoryStorageArea::Read(std::string& content,
+                               const std::string& uuid,
+                               FileContentType type)
+  {
+    boost::mutex::scoped_lock lock(mutex_);
+
+    Content::const_iterator found = content_.find(uuid);
+
+    if (found == content_.end())
+    {
+      throw OrthancException(ErrorCode_InexistentFile);
+    }
+    else if (found->second == NULL)
+    {
+      throw OrthancException(ErrorCode_InternalError);
+    }
+    else
+    {
+      content.assign(*found->second);
+    }
+  }
+      
+
+  void MemoryStorageArea::Remove(const std::string& uuid,
+                                 FileContentType type)
+  {
+    boost::mutex::scoped_lock lock(mutex_);
+
+    Content::iterator found = content_.find(uuid);
+    
+    if (found == content_.end())
+    {
+      // Ignore second removal
+    }
+    else if (found->second == NULL)
+    {
+      throw OrthancException(ErrorCode_InternalError);
+    }
+    else
+    {
+      delete found->second;
+      content_.erase(found);
+    }
+  }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Core/FileStorage/MemoryStorageArea.h	Tue Jun 05 15:46:02 2018 +0200
@@ -0,0 +1,66 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2018 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include "IStorageArea.h"
+
+#include <boost/thread/mutex.hpp>
+#include <map>
+
+namespace Orthanc
+{
+  class MemoryStorageArea : public IStorageArea
+  {
+  private:
+    typedef std::map<std::string, std::string*>  Content;
+    
+    boost::mutex  mutex_;
+    Content       content_;
+    
+  public:
+    virtual ~MemoryStorageArea();
+    
+    virtual void Create(const std::string& uuid,
+                        const void* content,
+                        size_t size,
+                        FileContentType type);
+
+    virtual void Read(std::string& content,
+                      const std::string& uuid,
+                      FileContentType type);
+
+    virtual void Remove(const std::string& uuid,
+                        FileContentType type);
+  };
+}

--- a/UnitTestsSources/MultiThreadingTests.cpp	Mon Jun 04 12:36:24 2018 +0200
+++ b/UnitTestsSources/MultiThreadingTests.cpp	Tue Jun 05 15:46:02 2018 +0200
@@ -130,7 +130,7 @@
   protected:
     virtual bool HandleInstance(const std::string& instance)
     {
-      return (instance != "nope");
+      return true;
     }
 
   public:
@@ -777,6 +777,8 @@
 
   std::auto_ptr<IJob> job;
   job.reset(unserializer.UnserializeJob(s));
+  ASSERT_EQ("description", dynamic_cast<DummyInstancesJob&>(*job).GetDescription());
+  //ASSERT_EQ("nope", dynamic_cast<DummyInstancesJob&>(*job).GetInstance(0));
 }