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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#ifndef SMART_SHARED_PTR_H
#define SMART_SHARED_PTR_H
#include <memory>
#include "libsmartmacros.h"
struct SharedPtrBase
{
LIB_SMART_API static void logDefaultConstructor(const char *instantiation, const void *t);
LIB_SMART_API static void logConstructor(const char *instantiation, const void *t, const void *pointee);
LIB_SMART_API static void logCopyConstructor(const char *instantiation, const void *t, const void *refData);
LIB_SMART_API static void logAssignment(const char *instantiation, const void *t, const void *refData);
LIB_SMART_API static void logDestructor(const char *instantiation, const void *t, int remainingRefCount);
};
template <class T>
class SharedPtr : public SharedPtrBase {
public:
LIBMINIMAL_DEFAULT_MOVE(SharedPtr)
SharedPtr() { logDefaultConstructor(typeid(T).name(), this); }
SharedPtr(T *v) : mPtr(v)
{
logConstructor(typeid(T).name(), this, v);
}
SharedPtr(const SharedPtr<T> &other) : mPtr(other.mPtr)
{
logCopyConstructor(typeid(T).name(), this, data());
}
template<class X>
SharedPtr(const SharedPtr<X> &other) : mPtr(other.mPtr)
{
logCopyConstructor(typeid(T).name(), this, data());
}
SharedPtr &operator=(const SharedPtr &other)
{
if (this != &other)
mPtr = other.mPtr;
return *this;
}
T *data() const
{
return mPtr.get();
}
int useCount() const
{
return mPtr.use_count();
}
void dummyMethod1()
{
}
bool isNull() const
{
return mPtr.get() == nullptr;
}
T& operator*() const
{
// Crashes if smart pointer is empty (just like std::shared_ptr).
return *mPtr;
}
T *operator->() const
{
return mPtr.get();
}
bool operator!() const
{
return !mPtr;
}
~SharedPtr()
{
if (mPtr.use_count() >= 1)
logDestructor(typeid(T).name(), this, mPtr.use_count() - 1);
}
std::shared_ptr<T> mPtr;
};
#endif // SMART_SHARED_PTR_H
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