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// **********************************************************************
//
// Copyright (c) 2003-2005 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#ifndef ICE_UTIL_GC_SHARED_H
#define ICE_UTIL_GC_SHARED_H
#include <IceUtil/Config.h>
#include <IceUtil/Shared.h>
#include <IceUtil/GCRecMutex.h>
#include <set>
namespace IceUtil
{
class GC;
class GCShared;
typedef std::set<GCShared*> GCObjectSet;
extern ICE_UTIL_API GCObjectSet gcObjects; // Set of pointers to all existing classes with class data members.
typedef std::multiset<GCShared*> GCObjectMultiSet;
class ICE_UTIL_API GCShared : virtual public Shared
{
public:
GCShared() {}
virtual ~GCShared() {}
virtual void __incRef(); // First derived class with class data members overrides this.
virtual void __decRef(); // Ditto.
int __getRef() const
{
gcRecMutex._m->lock();
int ref = __getRefUnsafe();
gcRecMutex._m->unlock();
return ref;
}
virtual void __setNoDelete(bool);
void __incRefUnsafe()
{
#if defined(_WIN32)
InterlockedIncrement(&_ref);
#elif defined(ICE_HAS_ATOMIC_FUNCTIONS)
ice_atomic_inc(&_ref);
#else
++_ref;
#endif
}
void __decRefUnsafe()
{
#if defined(_WIN32)
InterlockedDecrement(&_ref);
#elif defined(ICE_HAS_ATOMIC_FUNCTIONS)
ice_atomic_dec_and_test(&_ref);
#else
--_ref;
#endif
}
int __getRefUnsafe() const
{
#if defined(_WIN32)
return InterlockedExchangeAdd(const_cast<LONG*>(&_ref), 0);
#elif defined(ICE_HAS_ATOMIC_FUNCTIONS)
return ice_atomic_exchange_add(0, const_cast<ice_atomic_t*>(&_ref));
#else
return _ref;
#endif
}
virtual void __gcReachable(GCObjectMultiSet&) const = 0;
virtual void __gcClear() = 0;
protected:
static void __addObject(GCObjectMultiSet& c, GCShared* p)
{
gcRecMutex._m->lock();
if(p)
{
c.insert(p);
}
gcRecMutex._m->unlock();
}
};
}
#endif
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