[9997] Some changes in HashMapHolder.

* Use ACE_RW_Thread_Mutex, since there's much more reading than writing.
* Use read lock in Find(), and write lock in Insert() and Remove().
* Correctly lock the hashmap on outside calls.

src/game/Level0.cpp

@@ -153,21 +153,23 @@ bool ChatHandler::HandleGMListIngameCommand(const char* /*args*/)
 {
     bool first = true;
 
-    HashMapHolder<Player>::MapType &m = HashMapHolder<Player>::GetContainer();
-    HashMapHolder<Player>::MapType::const_iterator itr = m.begin();
-    for(; itr != m.end(); ++itr)
     {
-        AccountTypes itr_sec = itr->second->GetSession()->GetSecurity();
-        if ((itr->second->isGameMaster() || (itr_sec > SEC_PLAYER && itr_sec <= (AccountTypes)sWorld.getConfig(CONFIG_UINT32_GM_LEVEL_IN_GM_LIST))) &&
-            (!m_session || itr->second->IsVisibleGloballyFor(m_session->GetPlayer())))
+        HashMapHolder<Player>::ReadGuard g(HashMapHolder<Player>::GetLock());
+        HashMapHolder<Player>::MapType &m = sObjectAccessor.GetPlayers();
+        for(HashMapHolder<Player>::MapType::const_iterator itr = m.begin(); itr != m.end(); ++itr)
         {
-            if(first)
+            AccountTypes itr_sec = itr->second->GetSession()->GetSecurity();
+            if ((itr->second->isGameMaster() || (itr_sec > SEC_PLAYER && itr_sec <= (AccountTypes)sWorld.getConfig(CONFIG_UINT32_GM_LEVEL_IN_GM_LIST))) &&
+                (!m_session || itr->second->IsVisibleGloballyFor(m_session->GetPlayer())))
             {
-                SendSysMessage(LANG_GMS_ON_SRV);
-                first = false;
-            }
+                if(first)
+                {
+                    SendSysMessage(LANG_GMS_ON_SRV);
+                    first = false;
+                }
 
-            SendSysMessage(GetNameLink(itr->second).c_str());
+                SendSysMessage(GetNameLink(itr->second).c_str());
+            }
         }
     }
 

src/game/ObjectAccessor.cpp

@@ -92,22 +92,21 @@ ObjectAccessor::FindPlayer(ObjectGuid guid)
 Player*
 ObjectAccessor::FindPlayerByName(const char *name)
 {
-    //TODO: Player Guard
-    HashMapHolder<Player>::MapType& m = HashMapHolder<Player>::GetContainer();
-    HashMapHolder<Player>::MapType::iterator iter = m.begin();
-    for(; iter != m.end(); ++iter)
+    HashMapHolder<Player>::ReadGuard g(HashMapHolder<Player>::GetLock());
+    HashMapHolder<Player>::MapType& m = sObjectAccessor.GetPlayers();
+    for(HashMapHolder<Player>::MapType::iterator iter = m.begin(); iter != m.end(); ++iter)
         if(iter->second->IsInWorld() && ( ::strcmp(name, iter->second->GetName()) == 0 ))
             return iter->second;
+
     return NULL;
 }
 
 void
 ObjectAccessor::SaveAllPlayers()
 {
-    Guard guard(*HashMapHolder<Player>::GetLock());
-    HashMapHolder<Player>::MapType& m = HashMapHolder<Player>::GetContainer();
-    HashMapHolder<Player>::MapType::iterator itr = m.begin();
-    for(; itr != m.end(); ++itr)
+    HashMapHolder<Player>::ReadGuard g(HashMapHolder<Player>::GetLock());
+    HashMapHolder<Player>::MapType& m = sObjectAccessor.GetPlayers();
+    for(HashMapHolder<Player>::MapType::iterator itr = m.begin(); itr != m.end(); ++itr)
         itr->second->SaveToDB();
 }
 
@@ -277,7 +276,7 @@ void ObjectAccessor::RemoveOldCorpses()
 /// Define the static member of HashMapHolder
 
 template <class T> UNORDERED_MAP< uint64, T* > HashMapHolder<T>::m_objectMap;
-template <class T> ACE_Thread_Mutex HashMapHolder<T>::i_lock;
+template <class T> ACE_RW_Thread_Mutex HashMapHolder<T>::i_lock;
 
 /// Global definitions for the hashmap storage
 

src/game/ObjectAccessor.h

@@ -22,6 +22,7 @@
 #include "Platform/Define.h"
 #include "Policies/Singleton.h"
 #include <ace/Thread_Mutex.h>
+#include <ace/RW_Thread_Mutex.h>
 #include "Utilities/UnorderedMap.h"
 #include "Policies/ThreadingModel.h"
 
@@ -47,26 +48,33 @@ class HashMapHolder
     public:
 
         typedef UNORDERED_MAP< uint64, T* >   MapType;
-        typedef ACE_Thread_Mutex LockType;
-        typedef MaNGOS::GeneralLock<LockType > Guard;
+        typedef ACE_RW_Thread_Mutex LockType;
+        typedef ACE_Read_Guard<LockType> ReadGuard;
+        typedef ACE_Write_Guard<LockType> WriteGuard;
 
-        static void Insert(T* o) { m_objectMap[o->GetGUID()] = o; }
+        static void Insert(T* o)
+        {
+            WriteGuard guard(i_lock);
+            m_objectMap[o->GetGUID()] = o;
+        }
 
         static void Remove(T* o)
         {
-            Guard guard(i_lock);
+            WriteGuard guard(i_lock);
             m_objectMap.erase(o->GetGUID());
         }
 
         static T* Find(ObjectGuid guid)
         {
+            ReadGuard guard(i_lock);
             typename MapType::iterator itr = m_objectMap.find(guid.GetRawValue());
             return (itr != m_objectMap.end()) ? itr->second : NULL;
         }
 
         static MapType& GetContainer() { return m_objectMap; }
 
-        static LockType* GetLock() { return &i_lock; }
+        static LockType& GetLock() { return i_lock; }
+
     private:
 
         //Non instanceable only static
@@ -78,8 +86,8 @@ class HashMapHolder
 
 class MANGOS_DLL_DECL ObjectAccessor : public MaNGOS::Singleton<ObjectAccessor, MaNGOS::ClassLevelLockable<ObjectAccessor, ACE_Thread_Mutex> >
 {
-
     friend class MaNGOS::OperatorNew<ObjectAccessor>;
+
     ObjectAccessor();
     ~ObjectAccessor();
     ObjectAccessor(const ObjectAccessor &);

src/shared/revision_nr.h

@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "9996"
+ #define REVISION_NR "9997"
 #endif // __REVISION_NR_H__