Dataest & Co: Clear server side caches on internal server reboot

resolves #77

include/FluidSCWrapper.hpp

@@ -698,6 +698,7 @@ struct LifetimePolicy<Client, Wrapper,std::false_type, std::false_type>
   }
   static void destroyClass(Unit* unit) { static_cast<Wrapper*>(unit)->~Wrapper(); }
   static void setup(InterfaceTable*, const char*){}
+  static void unload(){}
 };
 
 /// Model objects
@@ -763,7 +764,18 @@ struct LifetimePolicy<Client, Wrapper,std::true_type, std::false_type>
           auto pos = mRegistry.find(objectID);
           if(pos != mRegistry.end()) mRegistry.erase(objectID);
        }, &mRegistry);
+              
+       auto flushName = std::stringstream(); 
+       flushName << "flush" << name; 
+              
+      ft->fDefinePlugInCmd(flushName.str().c_str(),
+          [](World*, void*, sc_msg_iter*,void*)
+          {
+            unload(); 
+          },nullptr);
   }
+  
+  static void unload(){ mRegistry.clear(); }
 
 private:
   static std::unordered_map<index,CacheRecord> mRegistry;
@@ -825,8 +837,24 @@ struct LifetimePolicy<Client, Wrapper,std::false_type, std::true_type>
           mClientRegistry.erase(objectName);
           mParamsRegistry.erase(objectName);
        }, &mClientRegistry);
-    
+       
+       
+      auto flushName = std::stringstream();
+      flushName << "flush" << name;
+              
+      ft->fDefinePlugInCmd(flushName.str().c_str(),
+          [](World*, void*, sc_msg_iter*,void*)
+          {
+            unload(); 
+          },nullptr);
   }
+  
+  static void unload()
+  { 
+    mClientRegistry.clear(); 
+    mParamsRegistry.clear();     
+  }
+  
 private:
   static  ClientPointer getClientPointer(Wrapper* wrapper)
   {

release-packaging/Classes/FluidManipulationClient.sc

@@ -53,9 +53,18 @@ FluidManipulationClient {
 		if(server.serverRunning.not,{
 			(this.asString + "– server not running").error; ^nil
 		});
+
+        NotificationCenter.register(server, \newAllocators, this, {
+            this.flush(server);
+        });
+
 		^super.newCopyArgs(server ?? {Server.default});//.baseinit(objectID,*args)
 	}
 
+    *flush { |s|
+        s.sendMsg("/cmd","flush"++this.name);
+    }
+
 	makeDef { |defName,objectID,args|
 		var initialVals = [];
 		args!? { if(args.size > 0) {initialVals = args.unlace(2)[1].flatten}};