0ad/source/tools/atlas/GameInterface/SharedMemory.h

#ifndef INCLUDED_SHAREDMEMORY
#define INCLUDED_SHAREDMEMORY

// we want to use placement new without grief
// (Duplicated in Shareable.h)
#undef new

namespace AtlasMessage
{

// Shared pointers need to be allocated and freed from the same heap.
// So, both sides of the Shareable interface should set these function pointers
// to point to the same function. (The game will have to dynamically load them
// from the DLL.)
extern void* (*ShareableMallocFptr) (size_t n);
extern void (*ShareableFreeFptr) (void* p);

// Implement shared new/delete on top of those
template<typename T> T* ShareableNew()
{
	T* p = (T*)ShareableMallocFptr(sizeof(T));
	new (p) T;
	return p;
}
template<typename T> void ShareableDelete(T* p)
{
	p->~T();
	ShareableFreeFptr(p);
}
// Or maybe we want to use a non-default constructor
#define SHAREABLE_NEW(T, data) (new ( (T*)AtlasMessage::ShareableMallocFptr(sizeof(T)) ) T data)

}

#endif // INCLUDED_SHAREDMEMORY