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https://github.com/ClickHouse/ClickHouse.git
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414 lines
11 KiB
C++
414 lines
11 KiB
C++
//
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// Delegate.h
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//
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// Library: Foundation
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// Package: Events
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// Module: Delegate
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//
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// Implementation of the Delegate template.
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//
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// Copyright (c) 2006-2011, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef Foundation_Delegate_INCLUDED
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#define Foundation_Delegate_INCLUDED
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#include "Poco/AbstractDelegate.h"
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#include "Poco/Expire.h"
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#include "Poco/Foundation.h"
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#include "Poco/FunctionDelegate.h"
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#include "Poco/Mutex.h"
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namespace Poco
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{
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template <class TObj, class TArgs, bool withSender = true>
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class Delegate : public AbstractDelegate<TArgs>
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{
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public:
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typedef void (TObj::*NotifyMethod)(const void *, TArgs &);
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Delegate(TObj * obj, NotifyMethod method) : _receiverObject(obj), _receiverMethod(method) { }
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Delegate(const Delegate & delegate)
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: AbstractDelegate<TArgs>(delegate), _receiverObject(delegate._receiverObject), _receiverMethod(delegate._receiverMethod)
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{
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}
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~Delegate() { }
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Delegate & operator=(const Delegate & delegate)
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{
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if (&delegate != this)
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{
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this->_receiverObject = delegate._receiverObject;
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this->_receiverMethod = delegate._receiverMethod;
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}
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return *this;
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}
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bool notify(const void * sender, TArgs & arguments)
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{
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Mutex::ScopedLock lock(_mutex);
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if (_receiverObject)
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{
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(_receiverObject->*_receiverMethod)(sender, arguments);
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return true;
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}
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else
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return false;
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}
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bool equals(const AbstractDelegate<TArgs> & other) const
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{
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const Delegate * pOtherDelegate = dynamic_cast<const Delegate *>(other.unwrap());
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return pOtherDelegate && _receiverObject == pOtherDelegate->_receiverObject && _receiverMethod == pOtherDelegate->_receiverMethod;
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}
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AbstractDelegate<TArgs> * clone() const { return new Delegate(*this); }
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void disable()
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{
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Mutex::ScopedLock lock(_mutex);
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_receiverObject = 0;
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}
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protected:
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TObj * _receiverObject;
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NotifyMethod _receiverMethod;
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Mutex _mutex;
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private:
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Delegate();
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};
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template <class TObj, class TArgs>
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class Delegate<TObj, TArgs, false> : public AbstractDelegate<TArgs>
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{
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public:
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typedef void (TObj::*NotifyMethod)(TArgs &);
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Delegate(TObj * obj, NotifyMethod method) : _receiverObject(obj), _receiverMethod(method) { }
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Delegate(const Delegate & delegate)
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: AbstractDelegate<TArgs>(delegate), _receiverObject(delegate._receiverObject), _receiverMethod(delegate._receiverMethod)
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{
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}
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~Delegate() { }
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Delegate & operator=(const Delegate & delegate)
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{
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if (&delegate != this)
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{
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this->_receiverObject = delegate._receiverObject;
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this->_receiverMethod = delegate._receiverMethod;
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}
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return *this;
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}
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bool notify(const void *, TArgs & arguments)
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{
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Mutex::ScopedLock lock(_mutex);
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if (_receiverObject)
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{
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(_receiverObject->*_receiverMethod)(arguments);
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return true;
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}
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else
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return false;
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}
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bool equals(const AbstractDelegate<TArgs> & other) const
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{
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const Delegate * pOtherDelegate = dynamic_cast<const Delegate *>(other.unwrap());
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return pOtherDelegate && _receiverObject == pOtherDelegate->_receiverObject && _receiverMethod == pOtherDelegate->_receiverMethod;
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}
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AbstractDelegate<TArgs> * clone() const { return new Delegate(*this); }
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void disable()
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{
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Mutex::ScopedLock lock(_mutex);
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_receiverObject = 0;
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}
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protected:
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TObj * _receiverObject;
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NotifyMethod _receiverMethod;
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Mutex _mutex;
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private:
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Delegate();
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};
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template <class TObj, class TArgs>
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inline Delegate<TObj, TArgs, true> delegate(TObj * pObj, void (TObj::*NotifyMethod)(const void *, TArgs &))
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{
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return Delegate<TObj, TArgs, true>(pObj, NotifyMethod);
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}
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template <class TObj, class TArgs>
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inline Delegate<TObj, TArgs, false> delegate(TObj * pObj, void (TObj::*NotifyMethod)(TArgs &))
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{
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return Delegate<TObj, TArgs, false>(pObj, NotifyMethod);
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}
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template <class TObj, class TArgs>
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inline Expire<TArgs> delegate(TObj * pObj, void (TObj::*NotifyMethod)(const void *, TArgs &), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<TArgs>(Delegate<TObj, TArgs, true>(pObj, NotifyMethod), expireMillisecs);
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}
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template <class TObj, class TArgs>
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inline Expire<TArgs> delegate(TObj * pObj, void (TObj::*NotifyMethod)(TArgs &), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<TArgs>(Delegate<TObj, TArgs, false>(pObj, NotifyMethod), expireMillisecs);
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}
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template <class TArgs>
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inline Expire<TArgs> delegate(void (*NotifyMethod)(const void *, TArgs &), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<TArgs>(FunctionDelegate<TArgs, true, true>(NotifyMethod), expireMillisecs);
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}
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template <class TArgs>
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inline Expire<TArgs> delegate(void (*NotifyMethod)(void *, TArgs &), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<TArgs>(FunctionDelegate<TArgs, true, false>(NotifyMethod), expireMillisecs);
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}
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template <class TArgs>
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inline Expire<TArgs> delegate(void (*NotifyMethod)(TArgs &), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<TArgs>(FunctionDelegate<TArgs, false>(NotifyMethod), expireMillisecs);
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}
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template <class TArgs>
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inline FunctionDelegate<TArgs, true, true> delegate(void (*NotifyMethod)(const void *, TArgs &))
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{
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return FunctionDelegate<TArgs, true, true>(NotifyMethod);
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}
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template <class TArgs>
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inline FunctionDelegate<TArgs, true, false> delegate(void (*NotifyMethod)(void *, TArgs &))
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{
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return FunctionDelegate<TArgs, true, false>(NotifyMethod);
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}
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template <class TArgs>
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inline FunctionDelegate<TArgs, false> delegate(void (*NotifyMethod)(TArgs &))
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{
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return FunctionDelegate<TArgs, false>(NotifyMethod);
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}
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template <class TObj>
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class Delegate<TObj, void, true> : public AbstractDelegate<void>
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{
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public:
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typedef void (TObj::*NotifyMethod)(const void *);
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Delegate(TObj * obj, NotifyMethod method) : _receiverObject(obj), _receiverMethod(method) { }
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Delegate(const Delegate & delegate)
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: AbstractDelegate<void>(delegate), _receiverObject(delegate._receiverObject), _receiverMethod(delegate._receiverMethod)
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{
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}
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~Delegate() { }
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Delegate & operator=(const Delegate & delegate)
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{
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if (&delegate != this)
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{
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this->_receiverObject = delegate._receiverObject;
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this->_receiverMethod = delegate._receiverMethod;
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}
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return *this;
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}
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bool notify(const void * sender)
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{
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Mutex::ScopedLock lock(_mutex);
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if (_receiverObject)
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{
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(_receiverObject->*_receiverMethod)(sender);
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return true;
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}
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else
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return false;
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}
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bool equals(const AbstractDelegate<void> & other) const
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{
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const Delegate * pOtherDelegate = dynamic_cast<const Delegate *>(other.unwrap());
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return pOtherDelegate && _receiverObject == pOtherDelegate->_receiverObject && _receiverMethod == pOtherDelegate->_receiverMethod;
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}
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AbstractDelegate<void> * clone() const { return new Delegate(*this); }
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void disable()
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{
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Mutex::ScopedLock lock(_mutex);
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_receiverObject = 0;
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}
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protected:
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TObj * _receiverObject;
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NotifyMethod _receiverMethod;
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Mutex _mutex;
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private:
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Delegate();
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};
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template <class TObj>
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class Delegate<TObj, void, false> : public AbstractDelegate<void>
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{
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public:
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typedef void (TObj::*NotifyMethod)();
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Delegate(TObj * obj, NotifyMethod method) : _receiverObject(obj), _receiverMethod(method) { }
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Delegate(const Delegate & delegate)
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: AbstractDelegate<void>(delegate), _receiverObject(delegate._receiverObject), _receiverMethod(delegate._receiverMethod)
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{
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}
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~Delegate() { }
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Delegate & operator=(const Delegate & delegate)
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{
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if (&delegate != this)
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{
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this->_receiverObject = delegate._receiverObject;
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this->_receiverMethod = delegate._receiverMethod;
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}
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return *this;
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}
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bool notify(const void *)
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{
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Mutex::ScopedLock lock(_mutex);
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if (_receiverObject)
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{
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(_receiverObject->*_receiverMethod)();
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return true;
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}
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else
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return false;
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}
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bool equals(const AbstractDelegate<void> & other) const
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{
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const Delegate * pOtherDelegate = dynamic_cast<const Delegate *>(other.unwrap());
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return pOtherDelegate && _receiverObject == pOtherDelegate->_receiverObject && _receiverMethod == pOtherDelegate->_receiverMethod;
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}
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AbstractDelegate<void> * clone() const { return new Delegate(*this); }
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void disable()
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{
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Mutex::ScopedLock lock(_mutex);
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_receiverObject = 0;
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}
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protected:
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TObj * _receiverObject;
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NotifyMethod _receiverMethod;
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Mutex _mutex;
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private:
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Delegate();
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};
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template <class TObj>
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inline Delegate<TObj, void, true> delegate(TObj * pObj, void (TObj::*NotifyMethod)(const void *))
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{
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return Delegate<TObj, void, true>(pObj, NotifyMethod);
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}
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template <class TObj>
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inline Delegate<TObj, void, false> delegate(TObj * pObj, void (TObj::*NotifyMethod)())
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{
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return Delegate<TObj, void, false>(pObj, NotifyMethod);
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}
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template <class TObj>
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inline Expire<void> delegate(TObj * pObj, void (TObj::*NotifyMethod)(const void *), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<void>(Delegate<TObj, void, true>(pObj, NotifyMethod), expireMillisecs);
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}
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template <class TObj>
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inline Expire<void> delegate(TObj * pObj, void (TObj::*NotifyMethod)(), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<void>(Delegate<TObj, void, false>(pObj, NotifyMethod), expireMillisecs);
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}
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inline Expire<void> delegate(void (*NotifyMethod)(const void *), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<void>(FunctionDelegate<void, true, true>(NotifyMethod), expireMillisecs);
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}
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inline Expire<void> delegate(void (*NotifyMethod)(void *), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<void>(FunctionDelegate<void, true, false>(NotifyMethod), expireMillisecs);
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}
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inline Expire<void> delegate(void (*NotifyMethod)(), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<void>(FunctionDelegate<void, false>(NotifyMethod), expireMillisecs);
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}
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inline FunctionDelegate<void, true, true> delegate(void (*NotifyMethod)(const void *))
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{
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return FunctionDelegate<void, true, true>(NotifyMethod);
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}
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inline FunctionDelegate<void, true, false> delegate(void (*NotifyMethod)(void *))
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{
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return FunctionDelegate<void, true, false>(NotifyMethod);
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}
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inline FunctionDelegate<void, false> delegate(void (*NotifyMethod)())
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{
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return FunctionDelegate<void, false>(NotifyMethod);
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}
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} // namespace Poco
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#endif // Foundation_Delegate_INCLUDED
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