--- a/Resources/Orthanc/Core/SystemToolbox.cpp	Mon Dec 19 12:55:14 2016 +0100
+++ b/Resources/Orthanc/Core/SystemToolbox.cpp	Wed Dec 21 14:19:38 2016 +0100
@@ -123,7 +123,7 @@
     barrierEvent_ = ServerBarrierEvent_Stop;
     while (!(*stopFlag || finish_))
     {
-      Toolbox::USleep(100 * 1000);
+      SystemToolbox::USleep(100 * 1000);
     }
 
 #if defined(_WIN32)
@@ -152,6 +152,18 @@
   }
 
 
+  void SystemToolbox::USleep(uint64_t microSeconds)
+  {
+#if defined(_WIN32)
+    ::Sleep(static_cast<DWORD>(microSeconds / static_cast<uint64_t>(1000)));
+#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__native_client__)
+    usleep(microSeconds);
+#else
+#error Support your platform here
+#endif
+  }
+
+
   static std::streamsize GetStreamSize(std::istream& f)
   {
     // http://www.cplusplus.com/reference/iostream/istream/tellg/