Implemented NamedCounter method that allows adding a specific value to the counter.

git-svn-id: http://yate.null.ro/svn/yate/trunk@6541 acf43c95-373e-0410-b603-e72c3f656dc1

engine/TelEngine.cpp

@@ -1436,6 +1436,21 @@ int NamedCounter::dec()
 #endif
 }
 
+int NamedCounter::add(int val)
+{
+#ifdef ATOMIC_OPS
+#ifdef _WINDOWS
+    return InterlockedExchangeAdd((LONG*)&m_count,(LONG)val);
+#else
+    return __sync_add_and_fetch(&m_count,val);
+#endif
+#else
+    Lock lock(m_mutex);
+    m_count += val;
+    return m_count;
+#endif
+}
+
 
 void SysUsage::init()
 {

yateclass.h

@@ -3656,6 +3656,12 @@ public:
      */
     int dec();
 
+    /**
+     * Add a specific value to the counter
+     * @param val Value to add
+     */
+    int add(int val);
+
     /**
      * Get the current value of the counter
      * @return Value of the counter