Convert wait into member function

cpp/include/Ice/CtrlCHandler.h

@@ -44,15 +44,13 @@ namespace Ice
         /// Obtains the current signal callback.
         /// @return The callback.
         [[nodiscard]] CtrlCHandlerCallback getCallback() const;
-    };
 
-    /// Waits until the CtrlC-C handler catches a signal.
-    /// @param handler The Ctrl-C handler.
-    /// @return The signal number that was caught.
-    /// @remark This function installs a callback in the CtrlCHandler object. It must not be called when a non-null
-    /// callback is already installed.
-    /// \headerfile Ice/Ice.h
-    ICE_API int wait(CtrlCHandler& handler);
+        /// Waits until this handler catches a signal.
+        /// @return The signal number that was caught.
+        /// @remark This function installs a signal callback. It must not be called when a non-null callback is already
+        /// installed.
+        int wait();
+    };
 }
 
 #endif

cpp/src/Ice/CtrlCHandler.cpp

@@ -205,20 +205,20 @@ CtrlCHandler::~CtrlCHandler()
 #endif
 
 int
-Ice::wait(CtrlCHandler& handler)
+CtrlCHandler::wait()
 {
     promise<int> promise;
 
-    CtrlCHandlerCallback oldCallback = handler.setCallback(
-        [&promise, &handler](int sig)
+    CtrlCHandlerCallback oldCallback = setCallback(
+        [&promise, this](int sig)
         {
-            handler.setCallback(nullptr); // ignore further signals
+            setCallback(nullptr); // ignore further signals
             promise.set_value(sig);
         });
 
     if (oldCallback)
     {
-        handler.setCallback(oldCallback);
+        setCallback(oldCallback);
         throw Ice::LocalException{__FILE__, __LINE__, "do not call wait on a CtrlCHandler with a registered callback"};
     }