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#pragma once
//------------------------------------------------------------------------------
/**
    @file core/win32/win32singleton.h

    Provides helper macros to implement singleton objects:
    
	this mean one instance in one thread
	- __DeclareThreadSingleton             put this into class declaration.        old£º    __DeclareSingleton    
	- __ImplementThreadSingleton           put this into the implemention file.    old:     __ImplementSingleton
	- __ConstructThreadSingleton           put this into the constructor           old:     __ConstructSingleton    
	- __DestructThreadSingleton            put this into the destructor            old:     __DestructSingleton

	this mean one instance in one image 
	- __DeclareImageSingleton             put this into class declaration.         old:     __DeclareInterfaceSingleton    
	- __ImplementImageSingleton           put this into the implemention file.     old:     __ImplementInterfaceSingleton 
	- __ConstructImageInterfaceSingleton  put this into the constructor            old:     __ConstructInterfaceSingleton
	- __DestructImageInterfaceSingleton   put this into the destructor             old:     __DestructInterfaceSingleton

    Get a pointer to a singleton object using the static Instance() method:

    Core::Server* coreServer = Core::Server::Instance();
*/
#include "core/types.h"
#include "threading/ThreadRuntimeInfo.h"

//------------------------------------------------------------------------------
#if 0	//	old code

// ·ÏÆú´úÂë
//#define __DeclareThreadSingleton(type) \
//public: \
//    ThreadLocal static type * Singleton; \
//    static type * Instance() { n_assert(0 != Singleton); return Singleton; }; \
//    static bool HasInstance() { return 0 != Singleton; }; \
//private:
//
//#define __ImplementThreadSingleton(type) \
//	ThreadLocal type * type::Singleton = 0;
//
//#define __DestructThreadSingleton \
//	n_assert(Singleton); Singleton = 0;
//
//#define __ConstructThreadSingleton \
//	n_assert(0 == Singleton); Singleton = this;

#else	// new


#define __DeclareThreadSingleton(type) \
public: \
	static IndexT MyTlsID; \
	static type * Instance() {  Threading::ThreadRunTimeInfo* pInfo = Threading::ThreadRunTimeInfo::GetMyThreadRuntime(); n_assert(pInfo); char* pRef = pInfo->GetInstance(MyTlsID); return (type*)pRef; }; \
	static bool HasInstance() { Threading::ThreadRunTimeInfo* pInfo = Threading::ThreadRunTimeInfo::GetMyThreadRuntime(); if(pInfo) { return pInfo->HasInstance(MyTlsID); } else { return false; } }; \
private:

#define __ImplementThreadSingleton(type) \
	IndexT type::MyTlsID = Threading::ThreadRunTimeInfo::GetThreadInstanceID();\

#define __ConstructThreadSingleton \
	Threading::ThreadRunTimeInfo* pInfo = Threading::ThreadRunTimeInfo::GetMyThreadRuntime(); \
    n_assert(pInfo); \
    pInfo->SetInstance( MyTlsID , (char*)this );

#define __DestructThreadSingleton \
	Threading::ThreadRunTimeInfo* pInfo = Threading::ThreadRunTimeInfo::GetMyThreadRuntime(); \
	n_assert(pInfo); \
	pInfo->SetInstance( MyTlsID , NULL );

#endif





//------------------------------------------------------------------------
#define __DeclareImageSingleton(type) \
public: \
    static type * Singleton; \
    static type * Instance() { n_assert(0 != Singleton); return Singleton; }; \
    static bool HasInstance() { return 0 != Singleton; }; \
private:

#define __ImplementImageSingleton(type) \
    type * type::Singleton = 0;

#define __ConstructImageSingleton \
    n_assert(0 == Singleton); Singleton = this;

#define __DestructImageSingleton \
	n_assert(Singleton); Singleton = 0;
//------------------------------------------------------------------------------