1 files changed, 122 insertions, 0 deletions
diff --git a/cpp/include/IceUtil/Lock.h b/cpp/include/IceUtil/Lock.h
new file mode 100644
index 00000000000..4fb921c8a66
--- /dev/null
+++ b/cpp/include/IceUtil/Lock.h
@@ -0,0 +1,122 @@
+// **********************************************************************
+//
+// Copyright (c) 2001
+// MutableRealms, Inc.
+// Huntsville, AL, USA
+//
+// All Rights Reserved
+//
+// **********************************************************************
+
+#ifndef ICE_UTIL_LOCK_H
+#define ICE_UTIL_LOCK_H
+
+#include <IceUtil/Config.h>
+
+namespace IceUtil
+{
+
+//
+// Forward declarations.
+//
+class Cond;
+
+template <typename T>
+class Lock
+{
+public:
+
+    Lock(T& mutex) :
+	_mutex(mutex)
+    {
+	_mutex.lock();
+    }
+
+    ~Lock()
+    {
+	_mutex.unlock();
+    }
+
+private:
+
+    T& _mutex;
+
+    friend class Cond;
+};
+
+template <typename T>
+class TryLock
+{
+public:
+
+    TryLock(T& mutex) :
+	_mutex(mutex)
+    {
+	_mutex.trylock();
+    }
+
+    ~TryLock()
+    {
+	_mutex.unlock();
+    }
+
+private:
+
+    T& _mutex;
+
+    friend class Cond;
+};
+
+//
+// This is for use when a class derives from Mutex, Monitor or
+// RecMutex. Otherwise declare the concurrency primitive mutable.
+//
+template <typename T>
+class ConstLock
+{
+public:
+
+    ConstLock(const T& mutex) :
+	_mutex(const_cast<T&>(mutex))
+    {
+	_mutex.lock();
+    }
+
+    ~ConstLock()
+    {
+	_mutex.unlock();
+    }
+
+private:
+
+    T& _mutex;
+
+    friend class Cond;
+};
+
+template <typename T>
+class ConstTryLock
+{
+public:
+
+    ConstTryLock(const T& mutex) :
+	_mutex(const_cast<T>(mutex))
+    {
+	_mutex.trylock();
+    }
+
+    ~ConstTryLock()
+    {
+	_mutex.unlock();
+    }
+
+private:
+
+    T& _mutex;
+
+    friend class Cond;
+};
+
+} // End namespace IceUtil
+
+#endif