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// **********************************************************************
//
// Copyright (c) 2003-2016 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 FREEZE_TRANSACTIONAL_EVICTOR_CONTEXT_H
#define FREEZE_TRANSACTIONAL_EVICTOR_CONTEXT_H
#include <Ice/Ice.h>
#include <Freeze/TransactionalEvictor.h>
#include <Freeze/EvictorStorage.h>
#include <Freeze/EvictorI.h>
#include <Freeze/Initialize.h>
#include <IceUtil/IceUtil.h>
namespace Freeze
{
template<class T> class ObjectStore;
class TransactionalEvictorElement;
class TransactionalEvictorContext : public Ice::DispatchInterceptorAsyncCallback, public PostCompletionCallback,
public IceUtil::Monitor<IceUtil::Mutex>
{
public:
class ServantHolder
{
public:
ServantHolder();
~ServantHolder() ICE_NOEXCEPT_FALSE;
void init(const TransactionalEvictorContextPtr&, const Ice::Current&, ObjectStore<TransactionalEvictorElement>*);
void adopt(ServantHolder&);
void markReadWrite();
bool initialized() const
{
return _ownBody && _body.ctx != 0;
}
const Ice::ObjectPtr& servant() const
{
return _body.rec.servant;
}
struct Body
{
Body();
bool matches(const Ice::Identity& ident, ObjectStore<TransactionalEvictorElement>* s) const
{
return current->id == ident && store == s;
}
bool readOnly;
bool removed;
bool ownServant;
const TransactionalEvictorContextPtr* ctx;
const Ice::Current* current;
ObjectStore<TransactionalEvictorElement>* store;
ObjectRecord rec;
};
private:
Body _body;
bool _ownBody;
};
class ToInvalidate
{
public:
ToInvalidate(const Ice::Identity&, ObjectStore<TransactionalEvictorElement>*);
static void invalidate(ToInvalidate*);
static void destroy(ToInvalidate*);
private:
const Ice::Identity _ident;
ObjectStore<TransactionalEvictorElement>* _store;
EvictorIBasePtr _evictor; // for _guard
DeactivateController::Guard _guard; // ensures store is not dangling
};
TransactionalEvictorContext(const SharedDbEnvPtr&);
TransactionalEvictorContext(const TransactionIPtr&);
virtual ~TransactionalEvictorContext();
virtual void postCompletion(bool, bool, const SharedDbEnvPtr&);
virtual bool response(bool);
virtual bool exception(const std::exception&);
virtual bool exception();
Ice::ObjectPtr servantRemoved(const Ice::Identity&, ObjectStore<TransactionalEvictorElement>*);
void deadlockException();
void checkDeadlockException();
bool clearUserException();
void commit();
void rollback();
const TransactionIPtr& transaction() const
{
return _tx;
}
private:
friend class ServantHolder;
ServantHolder::Body* findServantHolderBody(const Ice::Identity&, ObjectStore<TransactionalEvictorElement>*) const;
void finalize(bool);
//
// Stack of ServantHolder::Body*
//
typedef std::deque<ServantHolder::Body*> Stack;
Stack _stack;
//
// List of objects to invalidate from the caches upon commit
//
std::list<ToInvalidate*> _invalidateList;
TransactionIPtr _tx;
IceUtil::ThreadControl _owner;
IceUtil::UniquePtr<DeadlockException> _deadlockException;
IceUtil::UniquePtr<TransactionalEvictorDeadlockException> _nestedCallDeadlockException;
//
// Protected by this
//
bool _deadlockExceptionDetected;
//
// Not protected (used only by dispatch thread)
//
bool _userExceptionDetected;
};
typedef IceUtil::Handle<TransactionalEvictorContext> TransactionalEvictorContextPtr;
}
#endif
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