--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Resources/Graveyard/Threading/IThreadSafety.h	Thu Apr 27 16:57:49 2017 +0200
@@ -0,0 +1,57 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017 Osimis, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * 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
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include <boost/noncopyable.hpp>
+
+namespace OrthancStone
+{
+  /**
+   * Dummy interface to explicitely tag the interfaces whose derived
+   * class must be thread-safe. The different methods of such classes
+   * might be simlultaneously invoked by several threads, and should
+   * be properly protected by mutexes.
+   **/
+  class IThreadSafe : public boost::noncopyable
+  {
+  public:
+    virtual ~IThreadSafe()
+    {
+    }
+  };
+
+
+  /**
+   * Dummy interface to explicitely tag the interfaces that are NOT
+   * expected to be thread-safe. The Orthanc Stone framework ensures
+   * that at most one method of such classes will be invoked at a
+   * given time. Such classes are automatically protected by the
+   * Orthanc Stone framework wherever required.
+   **/
+  class IThreadUnsafe : public boost::noncopyable
+  {
+  public:
+    virtual ~IThreadUnsafe()
+    {
+    }
+  };
+}