Add timer parameter to DeadlineTimer callback

modules/beast_basics/events/beast_DeadlineTimer.cpp

@@ -97,7 +97,7 @@ public:
                             //
                             // Note that this happens while the lock is held.
                             //
-                            iter->m_listener->onDeadlineTimer ();
+                            iter->m_listener->onDeadlineTimer (*iter);
 
                             // Remove it from the list.
                             m_items.erase (iter);

modules/beast_basics/events/beast_DeadlineTimer.h

@@ -35,7 +35,7 @@ public:
     class Listener
     {
     public:
-        virtual void onDeadlineTimer () { }
+        virtual void onDeadlineTimer (DeadlineTimer&) { }
     };
 
 public:
@@ -64,6 +64,22 @@ public:
     */
     void reset ();
 
+    /** Equality comparison.
+
+        Timers are equal if they have the same address.
+    */
+    inline bool operator== (DeadlineTimer const& other) const
+    {
+        return this == &other;
+    }
+
+    /** Inequality comparison.
+    */
+    inline bool operator!= (DeadlineTimer const& other) const
+    {
+        return this != &other;
+    }
+
 private:
     class Manager;