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https://github.com/pocoproject/poco.git
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88be66972a
* feat(AsyncObserver): Improve NotificationCenter speed and usability #4414 * fix(Notification): add missing header * feat(Any): add checkers for holding nullptr #4447 * feat(NotificationCenter): g++ build and refactoring #4414 * fix(Observer): compile errors on some compilers #4414 * fix(NotificationCenter): compile errors #4414 * chore(ParallelSocketAcceptor): remove unnecessary include and using from header * feat(AsyncNotificationCenter): add #4414 * test(AsyncNotificationCenter): add mixed observer types to the test #4414 * fix(AsyncNotificationCenter): hangs on program exit #4414 * fix(dev): friend not honored, temporarily make private members public * fix(AsyncNotificationCenter); remove default #4414
81 lines
1.7 KiB
C++
Executable File
81 lines
1.7 KiB
C++
Executable File
//
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// AbstractObserver.h
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//
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// Library: Foundation
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// Package: Notifications
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// Module: NotificationCenter
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//
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// Definition of the AbstractObserver class.
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//
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// Copyright (c) 2004-2006, 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_AbstractObserver_INCLUDED
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#define Foundation_AbstractObserver_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/Notification.h"
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namespace Poco {
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class Foundation_API AbstractObserver
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/// The base class for all instantiations of
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/// the Observer and NObserver template classes.
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{
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public:
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AbstractObserver();
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AbstractObserver(const AbstractObserver& observer);
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virtual ~AbstractObserver();
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AbstractObserver& operator = (const AbstractObserver& observer);
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virtual void notify(Notification* pNf) const = 0;
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virtual bool equals(const AbstractObserver& observer) const = 0;
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[[deprecated("use `Poco::Any accepts(Notification*)` instead")]]
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virtual bool accepts(Notification* pNf, const char* pName) const = 0;
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virtual bool accepts(const Notification::Ptr& pNf) const = 0;
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virtual AbstractObserver* clone() const = 0;
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virtual void start();
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/// No-op.
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/// This method can be implemented by inheriting classes which require
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/// explicit start in order to begin processing notifications.
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virtual void disable() = 0;
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virtual int backlog() const;
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/// Returns number of queued messages that this Observer has.
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/// For non-active (synchronous) observers, always returns zero.
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};
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//
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// inlines
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//
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inline void AbstractObserver::start()
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{
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}
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inline int AbstractObserver::backlog() const
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{
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return 0;
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}
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} // namespace Poco
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#endif // Foundation_AbstractObserver_INCLUDED
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