mangos/src/framework/Policies/CreationPolicy.h
2017-01-01 14:19:24 +00:00

188 lines
4.3 KiB
C++

/**
* MaNGOS is a full featured server for World of Warcraft, supporting
* the following clients: 1.12.x, 2.4.3, 3.3.5a, 4.3.4a and 5.4.8
*
* Copyright (C) 2005-2017 MaNGOS project <https://getmangos.eu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* World of Warcraft, and all World of Warcraft or Warcraft art, images,
* and lore are copyrighted by Blizzard Entertainment, Inc.
*/
#ifndef MANGOS_CREATIONPOLICY_H
#define MANGOS_CREATIONPOLICY_H
#include <stdlib.h>
#include "Platform/Define.h"
namespace MaNGOS
{
template<class T>
/**
* @brief OperatorNew policy creates an object on the heap using new.
*
*/
class OperatorNew
{
public:
/**
* @brief
*
* @return T
*/
static T* Create()
{
return (new T);
}
/**
* @brief
*
* @param obj
*/
static void Destroy(T* obj)
{
delete obj;
}
};
template<class T>
/**
* @brief LocalStaticCreation policy creates an object on the stack the first time call Create.
*
*/
class LocalStaticCreation
{
/**
* @brief
*
*/
union MaxAlign
{
char t_[sizeof(T)]; /**< TODO */
short int shortInt_; /**< TODO */
int int_; /**< TODO */
long int longInt_; /**< TODO */
float float_; /**< TODO */
double double_; /**< TODO */
long double longDouble_; /**< TODO */
struct Test;
int Test::* pMember_; /**< TODO */
/**
* @brief
*
* @param Test::pMemberFn_)(int
* @return int
*/
int (Test::*pMemberFn_)(int);
};
public:
/**
* @brief
*
* @return T
*/
static T* Create()
{
static MaxAlign si_localStatic;
return new(&si_localStatic) T;
}
/**
* @brief
*
* @param obj
*/
static void Destroy(T* obj)
{
obj->~T();
}
};
/**
* CreateUsingMalloc by pass the memory manger.
*/
template<class T>
/**
* @brief
*
*/
class CreateUsingMalloc
{
public:
/**
* @brief
*
* @return T
*/
static T* Create()
{
void* p = malloc(sizeof(T));
if (!p)
{ return NULL; }
return new(p) T;
}
/**
* @brief
*
* @param p
*/
static void Destroy(T* p)
{
p->~T();
free(p);
}
};
template<class T, class CALL_BACK>
/**
* @brief CreateOnCallBack creates the object base on the call back.
*
*/
class CreateOnCallBack
{
public:
/**
* @brief
*
* @return T
*/
static T* Create()
{
return CALL_BACK::createCallBack();
}
/**
* @brief
*
* @param p
*/
static void Destroy(T* p)
{
CALL_BACK::destroyCallBack(p);
}
};
}
#endif