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#pragma once
#include <Havok/Common/Base/Object/hkBaseObject.h>
#include <Havok/Common/Base/Types/hkBaseDefs.h>
#include <Havok/Common/Base/Types/hkBaseTypes.h>
#include "Havok/Common/Base/Thread/Atomic/hkAtomicPrimitives.h"
class hkClass;
class hkReferencedObject : public hkBaseObject {
public:
inline hkReferencedObject();
// NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
explicit hkReferencedObject(hkFinishLoadedObjectFlag flag) {}
/// Dummy copy constructor and copy assignment operator.
inline hkReferencedObject(const hkReferencedObject& other);
inline hkReferencedObject& operator=(const hkReferencedObject& other);
~hkReferencedObject() override = default;
virtual const hkClass* getClassType() const;
inline int getReferenceCount() const;
inline void setReferenceCount(int newRefCount);
inline void addReference() const;
inline void removeReference() const;
inline int getAllocatedSize() const;
inline int getMemorySizeAndFlags() const;
inline void setMemorySizeAndFlags(int newMemSizeAndFlags);
inline void setMemorySizeFlagsAndReferenceCount(int newMemSizeAndFlags, int newRefCount);
protected:
virtual void deleteThisReferencedObject() const;
private:
mutable hkUint32 m_memSizeAndRefCount;
};
inline hkReferencedObject::hkReferencedObject() : m_memSizeAndRefCount(0xFFFF0001) {}
inline hkReferencedObject::hkReferencedObject(const hkReferencedObject& other)
: m_memSizeAndRefCount(0xFFFF0001) {}
inline hkReferencedObject& hkReferencedObject::operator=(const hkReferencedObject& other) {
return *this;
}
inline int hkReferencedObject::getReferenceCount() const {
return int(m_memSizeAndRefCount & 0xFFFF);
}
inline void hkReferencedObject::setReferenceCount(int newRefCount) {
hkAtomic::readModifyWrite(&m_memSizeAndRefCount, [newRefCount](hkUint32 oldVal) {
return (oldVal & 0xFFFF0000) | (newRefCount & 0xFFFF);
});
}
inline void hkReferencedObject::addReference() const {
if (getMemorySizeAndFlags() == 0)
return;
hkAtomic::readModifyWrite(&m_memSizeAndRefCount, [](hkUint32 oldVal) {
return (oldVal & 0xFFFF0000) | (((oldVal & 0xFFFF) + 1) & 0xFFFF);
});
}
inline void hkReferencedObject::removeReference() const {
if (getMemorySizeAndFlags() == 0)
return;
auto newVal = hkAtomic::readModifyWrite(&m_memSizeAndRefCount, [](hkUint32 oldVal) {
return (oldVal & 0xFFFF0000) | (((oldVal & 0xFFFF) - 1) & 0xFFFF);
});
if ((newVal & 0xFFFF) == 0)
deleteThisReferencedObject();
}
inline int hkReferencedObject::getAllocatedSize() const {
return getMemorySizeAndFlags() & 0x7FFF;
}
inline int hkReferencedObject::getMemorySizeAndFlags() const {
return int((m_memSizeAndRefCount >> 16) & 0xFFFF);
}
inline void hkReferencedObject::setMemorySizeAndFlags(int newMemSizeAndFlags) {
hkAtomic::readModifyWrite(&m_memSizeAndRefCount, [=](hkUint32 oldVal) {
return (newMemSizeAndFlags << 16) | (oldVal & 0xFFFF);
});
}
inline void hkReferencedObject::setMemorySizeFlagsAndReferenceCount(int newMemSizeAndFlags,
int newRefCount) {
const hkUint32 newVal = (newMemSizeAndFlags << 16) | (newRefCount & 0xFFFF);
hkAtomic::readModifyWrite(&m_memSizeAndRefCount, [=](auto) { return newVal; });
}
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