ported double tracking from TC

deps/acelite/ace/Dynamic.cpp

@@ -0,0 +1,30 @@
+#include "ace/Dynamic.h"
+#include "ace/Singleton.h"
+#include "ace/TSS_T.h"
+#include "ace/Synch_Traits.h"
+#include "ace/Null_Mutex.h"
+
+#if !defined (__ACE_INLINE__)
+#include "ace/Dynamic.inl"
+#endif /* __ACE_INLINE__ */
+
+
+
+ACE_BEGIN_VERSIONED_NAMESPACE_DECL
+
+ACE_Dynamic::ACE_Dynamic (void)
+  : is_dynamic_ (false)
+{
+  ACE_TRACE ("ACE_Dynamic::ACE_Dynamic");
+}
+
+/* static */ ACE_Dynamic *
+ACE_Dynamic::instance (void)
+{
+  return ACE_TSS_Singleton<ACE_Dynamic, ACE_SYNCH_NULL_MUTEX>::instance ();
+}
+
+ACE_SINGLETON_TEMPLATE_INSTANTIATE(ACE_TSS_Singleton, ACE_Dynamic, ACE_Null_Mutex);
+
+
+ACE_END_VERSIONED_NAMESPACE_DECL