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#ifndef SLANG_COM_OBJECT_H
#define SLANG_COM_OBJECT_H
#include "slang-basic.h"
#include <atomic>
namespace Slang
{
class ComObject : public RefObject
{
protected:
std::atomic<uint32_t> comRefCount;
public:
ComObject()
: comRefCount(0)
{}
ComObject(const ComObject&) : comRefCount(0) {}
ComObject& operator=(const ComObject&)
{
comRefCount = 0;
return *this;
};
virtual void comFree() {}
uint32_t addRefImpl()
{
auto oldRefCount = comRefCount++;
if (oldRefCount == 0)
addReference();
return oldRefCount + 1;
}
uint32_t releaseImpl()
{
auto oldRefCount = comRefCount--;
if (oldRefCount == 1)
{
comFree();
releaseReference();
}
return oldRefCount - 1;
}
};
#define SLANG_COM_OBJECT_IUNKNOWN_QUERY_INTERFACE \
SLANG_NO_THROW SlangResult SLANG_MCALL queryInterface(SlangUUID const& uuid, void** outObject) \
SLANG_OVERRIDE \
{ \
void* intf = getInterface(uuid); \
if (intf) \
{ \
addRef(); \
*outObject = intf; \
return SLANG_OK; \
} \
return SLANG_E_NO_INTERFACE; \
}
#define SLANG_COM_OBJECT_IUNKNOWN_ADD_REF \
SLANG_NO_THROW uint32_t SLANG_MCALL addRef() SLANG_OVERRIDE { return addRefImpl(); }
#define SLANG_COM_OBJECT_IUNKNOWN_RELEASE \
SLANG_NO_THROW uint32_t SLANG_MCALL release() SLANG_OVERRIDE { return releaseImpl(); }
#define SLANG_COM_OBJECT_IUNKNOWN_ALL \
SLANG_COM_OBJECT_IUNKNOWN_QUERY_INTERFACE \
SLANG_COM_OBJECT_IUNKNOWN_ADD_REF \
SLANG_COM_OBJECT_IUNKNOWN_RELEASE
} // namespace Slang
#endif
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