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diff --git a/dep/src/zthread/DeferredInterruptionScope.h b/dep/src/zthread/DeferredInterruptionScope.h
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+++ b/dep/src/zthread/DeferredInterruptionScope.h
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+/*
+ * Copyright (c) 2005, Eric Crahen
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is furnished
+ * to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef __ZTDEFERREDINTERRUPTIONSCOPE_H__
+#define __ZTDEFERREDINTERRUPTIONSCOPE_H__
+
+#include "ThreadImpl.h"
+#include <cassert>
+
+namespace ZThread {
+
+/**
+ * @class DeferredInterruptionScope
+ * @author Eric Crahen <http://www.code-foo.com>
+ * @date <2003-07-16T19:45:18-0400>
+ * @version 2.3.0
+ *
+ * Locking policy for a Guard that will defer any state reported 
+ * for the reported Status of a thread except SIGNALED until the 
+ * scope has ended. This allows a Guard to be used to create an
+ * uninterruptible region in code. 
+ */
+class DeferredInterruptionScope {
+ public:
+  
+  template <class LockType>
+  static void createScope(LockHolder<LockType>& l) {
+
+    l.getLock().interest(Monitor::SIGNALED);
+
+  }
+
+  template <class LockType>
+  static void destroyScope(LockHolder<LockType>& l) {
+
+    l.getLock().interest(Monitor::ANYTHING);
+
+  }
+
+};
+
+}
+
+#endif // __ZTDEFERREDINTERRUPTIONSCOPE_H__