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//
// Copyright (c) ZeroC, Inc. All rights reserved.
//
#ifndef ICE_UTIL_SHARED_H
#define ICE_UTIL_SHARED_H
#include <IceUtil/Config.h>
#include <IceUtil/Atomic.h>
//
// Base classes for reference counted types. The IceUtil::Handle
// template can be used for smart pointers to types derived from these
// bases.
//
// IceUtil::SimpleShared
// =====================
//
// A non thread-safe base class for reference-counted types.
//
// IceUtil::Shared
// ===============
//
// A thread-safe base class for reference-counted types.
//
namespace IceUtil
{
class ICE_API SimpleShared
{
public:
SimpleShared();
SimpleShared(const SimpleShared&);
virtual ~SimpleShared();
SimpleShared& operator=(const SimpleShared&)
{
return *this;
}
void __incRef()
{
assert(_ref >= 0);
++_ref;
}
void __decRef()
{
assert(_ref > 0);
if(--_ref == 0)
{
if(!_noDelete)
{
delete this;
}
}
}
int __getRef() const
{
return _ref;
}
void __setNoDelete(bool b)
{
_noDelete = b;
}
private:
int _ref;
bool _noDelete;
};
class ICE_API Shared
{
public:
//
// Flag constant used by the Shared class. Derived classes
// such as GCObject define more flag constants.
//
static const unsigned char NoDelete;
Shared();
Shared(const Shared&);
virtual ~Shared()
{
}
Shared& operator=(const Shared&)
{
return *this;
}
virtual void __incRef();
virtual void __decRef();
virtual int __getRef() const;
virtual void __setNoDelete(bool);
void __setFlag(unsigned char flag)
{
_flags |= flag;
}
void __clearFlag(unsigned char flag)
{
_flags &= ~flag;
}
bool __hasFlag(unsigned char flag)
{
return (_flags & flag) > 0;
}
protected:
IceUtilInternal::Atomic _ref;
unsigned char _flags;
};
}
#endif
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