Implement async class for database operations for better performance, remove 10ms sleep, fixed some crash on sql execute.

--HG--
branch : trunk

src/shared/Database/SqlDelayThread.cpp

@@ -32,15 +32,16 @@ void SqlDelayThread::run()
     mysql_thread_init();
     #endif
 
+    // Lets wait for next async task no more than 2 secs
+    ACE_Time_Value _time(2);
     while (m_running)
     {
         // if the running state gets turned off while sleeping
         // empty the queue before exiting
-        ACE_Based::Thread::Sleep(10);
+        SqlAsyncTask * s = (SqlAsyncTask*)m_sqlQueue.dequeue(/*&_time*/);
-        SqlOperation* s;
+        if(s)
-        while (m_sqlQueue.next(s))
         {
-            s->Execute(m_dbEngine);
+            s->call();
             delete s;
         }
     }
@@ -53,5 +54,11 @@ void SqlDelayThread::run()
 void SqlDelayThread::Stop()
 {
     m_running = false;
+    m_sqlQueue.queue()->deactivate();
 }
 
+bool SqlDelayThread::Delay(SqlOperation* sql)
+{
+    int res = m_sqlQueue.enqueue(new SqlAsyncTask(m_dbEngine, sql));
+    return (res != -1);
+}

src/shared/Database/SqlDelayThread.h

@@ -22,7 +22,7 @@
 #define __SQLDELAYTHREAD_H
 
 #include "ace/Thread_Mutex.h"
-#include "LockedQueue.h"
+#include "ace/Activation_Queue.h"
 #include "Threading.h"
 
 class Database;
@@ -30,7 +30,7 @@ class SqlOperation;
 
 class SqlDelayThread : public ACE_Based::Runnable
 {
-    typedef ACE_Based::LockedQueue<SqlOperation*, ACE_Thread_Mutex> SqlQueue;
+    typedef ACE_Activation_Queue SqlQueue;
 
     private:
         SqlQueue m_sqlQueue;                                ///< Queue of SQL statements
@@ -42,7 +42,7 @@ class SqlDelayThread : public ACE_Based::Runnable
         SqlDelayThread(Database* db);
 
         ///< Put sql statement to delay queue
-        bool Delay(SqlOperation* sql) { m_sqlQueue.add(sql); return true; }
+        bool Delay(SqlOperation* sql);
 
         virtual void Stop();                                ///< Stop event
         virtual void run();                                 ///< Main Thread loop

src/shared/Database/SqlOperations.h

@@ -24,6 +24,7 @@
 #include "Common.h"
 
 #include "ace/Thread_Mutex.h"
+#include "ace/Method_Request.h"
 #include "LockedQueue.h"
 #include <queue>
 #include "Utilities/Callback.h"
@@ -122,5 +123,33 @@ class SqlQueryHolderEx : public SqlOperation
             : m_holder(holder), m_callback(callback), m_queue(queue) {}
         void Execute(Database *db);
 };
+
+class SqlAsyncTask : public ACE_Method_Request
+{
+public:
+	SqlAsyncTask(Database * db, SqlOperation * op) : m_db(db), m_op(op) {}
+	~SqlAsyncTask() { if(!m_op) return; delete m_op; }
+
+	int call()
+	{
+	    if(m_db == NULL || m_op == NULL)
+		return -1;
+
+	    try
+	    {
+		m_op->Execute(m_db);
+	    }
+	    catch(...)
+	    {
+		return -1;
+	    }
+		
+	    return 0;
+	}
+
+private:
+	Database * m_db;
+	SqlOperation * m_op;
+};
 #endif                                                      //__SQLOPERATIONS_H