operator new / delete, C++ (vc++)

operator new / delete

#include <iostream>

class FOO
{
public:
	FOO()
	{
		std::cout << __FUNCTION__ << std::endl;
	}

FOO(int a) : m_a(a)
	{
		std::cout << __FUNCTION__ << a << std::endl;
	}

FOO(int a, int b) : m_a(a), m_b(b)
	{
		std::cout << __FUNCTION__ << a << b <<std::endl;
	}

~FOO()
	{
		std::cout << __FUNCTION__ << std::endl;
	}

int m_a;
	int m_b;
};

void* operator new(size_t sz, short mid, const char* file, int line, const std::nothrow_t& nt) throw()
{
	std::cout << mid << file << line << std::endl;
	return ::operator new(sz, nt);
}

void* operator new[](size_t sz, int mid, const char* file, long line, const std::nothrow_t& nt) throw()
{
	std::cout << mid << file << line << std::endl;
	return ::operator new(sz, nt);
}

//void operator delete(void* p, short mid, const char* file, int line, const std::nothrow_t& nt) throw()
//{
//	std::cout << mid << file << line << std::endl;
//	::operator delete(p, nt);
//}
//
//void operator delete[](void* p, int mid, const char* file, long line, const std::nothrow_t& nt) throw()
//{
//	std::cout << mid << file << line << std::endl;
//	delete[] p;
//}
//
//void operator delete[](void const* p, int mid, const char* file, long line, const std::nothrow_t& nt) throw()
//{
//	std::cout << mid << file << line << std::endl;
//	delete[] p;
//}

template<class T>
void mDelTemplate(T* t, int mid)
{
	std::cout << __FUNCTION__ << " " << mid << " " << std::endl;
	delete t;
}

template<class T>
void mDelTemplateArray(T* t, int mid)
{
	std::cout << __FUNCTION__ << " " << mid << " " << std::endl;
	delete[] t;
}

#define mNewA1(M, T, A1)		new (M, __FILE__, __LINE__, std::nothrow) T(A1)
#define mNewA2(M, T, A1, A2)	new (M, __FILE__, __LINE__, std::nothrow) T(A1, A2)
#define mNewArray(M, T, C)		new (M, __FILE__, __LINE__, std::nothrow) T[C]

//#define mDel(M, P)				operator delete(P, M, __FILE__, __LINE__, std::nothrow)
//#define mDelArray(M, P)			operator delete[](P, M, __FILE__, __LINE__, std::nothrow)
#define mDel(M, P)				mDelTemplate(P, M)
#define mDelArray(M, P)			mDelTemplateArray(P, M)

int main()
{
	FOO* p = mNewA2(100, FOO, 10, 20);
	mDel(100, p);

FOO* ap = mNewArray(100, FOO, 5);
	mDelArray(100, ap);

const FOO* cap = mNewArray(100, FOO, 15);
	mDelArray(100, cap);

return 0;
}


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