shared_ptr.h

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#ifndef INCLUDED_ALLOCATORS_SHARED_PTR
#define INCLUDED_ALLOCATORS_SHARED_PTR
 
#include "lib/alignment.h"
#include "lib/sysdep/rtl.h" // rtl_AllocateAligned
 
struct DummyDeleter
{
    template<class T>
    void operator()(T*)
    {
    }
};
 
template<class T>
inline std::shared_ptr<T> DummySharedPtr(T* ptr)
{
    return std::shared_ptr<T>(ptr, DummyDeleter());
}
 
struct ArrayDeleter
{
    template<class T>
    void operator()(T* p)
    {
        delete[] p;
    }
};
 
// (note: uses CheckedArrayDeleter)
std::shared_ptr<u8> Allocate(size_t size);
 
 
struct AlignedDeleter
{
    template<class T>
    void operator()(T* t)
    {
        rtl_FreeAligned(t);
    }
};
 
template<class T>
static inline Status AllocateAligned(std::shared_ptr<T>& p, size_t size, size_t alignment = cacheLineSize)
{
    void* mem = rtl_AllocateAligned(size, alignment);
    if(!mem)
        WARN_RETURN(ERR::NO_MEM);
    p.reset((T*)mem, AlignedDeleter());
    return INFO::OK;
}
 
#endif  // #ifndef INCLUDED_ALLOCATORS_SHARED_PTR