From dc407e219f8b0394f3a4d10ea8379b8678d98d1c Mon Sep 17 00:00:00 2001
From: sapier <Sapier at GMX dot net>
Date: Wed, 13 Nov 2013 21:46:14 +0100
Subject: [PATCH] Fix multicaller support in RequestQueue

---
 src/itemdef.cpp   |  9 +++----
 src/shader.cpp    |  8 +-----
 src/tile.cpp      |  8 +-----
 src/util/thread.h | 62 +++++++++++++++++++++++++++++------------------
 4 files changed, 44 insertions(+), 43 deletions(-)

diff --git a/src/itemdef.cpp b/src/itemdef.cpp
index 83a70f1d7..c520ea902 100644
--- a/src/itemdef.cpp
+++ b/src/itemdef.cpp
@@ -638,12 +638,9 @@ public:
 		{
 			GetRequest<std::string, ClientCached*, u8, u8>
 					request = m_get_clientcached_queue.pop();
-			GetResult<std::string, ClientCached*, u8, u8>
-					result;
-			result.key = request.key;
-			result.callers = request.callers;
-			result.item = createClientCachedDirect(request.key, gamedef);
-			request.dest->push_back(result);
+
+			m_get_clientcached_queue.pushResult(request,
+					createClientCachedDirect(request.key, gamedef));
 		}
 #endif
 	}
diff --git a/src/shader.cpp b/src/shader.cpp
index ed8cc5b73..122cbea19 100644
--- a/src/shader.cpp
+++ b/src/shader.cpp
@@ -546,13 +546,7 @@ void ShaderSource::processQueue()
 				<<"name=\""<<request.key<<"\""
 				<<std::endl;*/
 
-		GetResult<std::string, u32, u8, u8>
-				result;
-		result.key = request.key;
-		result.callers = request.callers;
-		result.item = getShaderIdDirect(request.key);
-
-		request.dest->push_back(result);
+		m_get_shader_queue.pushResult(request,getShaderIdDirect(request.key));
 	}
 }
 
diff --git a/src/tile.cpp b/src/tile.cpp
index 3c4989ea8..5dec79a10 100644
--- a/src/tile.cpp
+++ b/src/tile.cpp
@@ -786,13 +786,7 @@ void TextureSource::processQueue()
 				<<"name=\""<<request.key<<"\""
 				<<std::endl;*/
 
-		GetResult<std::string, u32, u8, u8>
-				result;
-		result.key = request.key;
-		result.callers = request.callers;
-		result.item = getTextureIdDirect(request.key);
-
-		request.dest->push_back(result);
+		m_get_texture_queue.pushResult(request,getTextureIdDirect(request.key));
 	}
 }
 
diff --git a/src/util/thread.h b/src/util/thread.h
index 678d9cf9b..70d41aeb9 100644
--- a/src/util/thread.h
+++ b/src/util/thread.h
@@ -106,13 +106,7 @@ public:
 	A single worker thread - multiple client threads queue framework.
 */
 
-template<typename Caller, typename Data>
-class CallerInfo
-{
-public:
-	Caller caller;
-	Data data;
-};
+
 
 template<typename Key, typename T, typename Caller, typename CallerData>
 class GetResult
@@ -120,7 +114,7 @@ class GetResult
 public:
 	Key key;
 	T item;
-	std::list<CallerInfo<Caller, CallerData> > callers;
+	std::pair<Caller, CallerData> caller;
 };
 
 template<typename Key, typename T, typename Caller, typename CallerData>
@@ -128,22 +122,24 @@ class ResultQueue: public MutexedQueue< GetResult<Key, T, Caller, CallerData> >
 {
 };
 
+template<typename Caller, typename Data, typename Key, typename T>
+class CallerInfo
+{
+public:
+	Caller caller;
+	Data data;
+	ResultQueue< Key, T, Caller, Data>* dest;
+};
+
 template<typename Key, typename T, typename Caller, typename CallerData>
 class GetRequest
 {
 public:
 	GetRequest()
 	{
-		dest = NULL;
 	}
-	GetRequest(ResultQueue<Key,T, Caller, CallerData> *a_dest)
+	GetRequest(Key a_key)
 	{
-		dest = a_dest;
-	}
-	GetRequest(ResultQueue<Key,T, Caller, CallerData> *a_dest,
-			Key a_key)
-	{
-		dest = a_dest;
 		key = a_key;
 	}
 	~GetRequest()
@@ -151,8 +147,7 @@ public:
 	}
 	
 	Key key;
-	ResultQueue<Key, T, Caller, CallerData> *dest;
-	std::list<CallerInfo<Caller, CallerData> > callers;
+	std::list<CallerInfo<Caller, CallerData, Key, T> > callers;
 };
 
 template<typename Key, typename T, typename Caller, typename CallerData>
@@ -180,20 +175,21 @@ public:
 
 			if(request.key == key)
 			{
-				for(typename std::list< CallerInfo<Caller, CallerData> >::iterator
+				for(typename std::list< CallerInfo<Caller, CallerData, Key, T> >::iterator
 						i = request.callers.begin();
 						i != request.callers.end(); ++i)
 				{
-					CallerInfo<Caller, CallerData> &ca = *i;
+					CallerInfo<Caller, CallerData, Key, T> &ca = *i;
 					if(ca.caller == caller)
 					{
 						ca.data = callerdata;
 						return;
 					}
 				}
-				CallerInfo<Caller, CallerData> ca;
+				CallerInfo<Caller, CallerData, Key, T> ca;
 				ca.caller = caller;
 				ca.data = callerdata;
+				ca.dest = dest;
 				request.callers.push_back(ca);
 				return;
 			}
@@ -205,11 +201,11 @@ public:
 
 		GetRequest<Key, T, Caller, CallerData> request;
 		request.key = key;
-		CallerInfo<Caller, CallerData> ca;
+		CallerInfo<Caller, CallerData, Key, T> ca;
 		ca.caller = caller;
 		ca.data = callerdata;
+		ca.dest = dest;
 		request.callers.push_back(ca);
-		request.dest = dest;
 		
 		m_queue.getList().push_back(request);
 	}
@@ -219,6 +215,26 @@ public:
 		return m_queue.pop_front(wait_if_empty);
 	}
 
+	void pushResult(GetRequest<Key, T, Caller, CallerData> req,
+					T res) {
+
+		for(typename std::list< CallerInfo<Caller, CallerData, Key, T> >::iterator
+				i = req.callers.begin();
+				i != req.callers.end(); ++i)
+		{
+			CallerInfo<Caller, CallerData, Key, T> &ca = *i;
+
+			GetResult<Key,T,Caller,CallerData> result;
+
+			result.key = req.key;
+			result.item = res;
+			result.caller.first = ca.caller;
+			result.caller.second = ca.data;
+
+			ca.dest->push_back(result);
+		}
+	}
+
 private:
 	MutexedQueue< GetRequest<Key, T, Caller, CallerData> > m_queue;
 };