mirror of
https://github.com/pocoproject/poco.git
synced 2024-12-22 07:05:03 +01:00
b0581433a7
fix: remove executable flag and change back to 100644 (was 100755) Signed-off-by: Roger Meier <r.meier@siemens.com>
119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
//
|
|
// ActiveDispatcher.h
|
|
//
|
|
// $Id: //poco/1.4/Foundation/include/Poco/ActiveDispatcher.h#1 $
|
|
//
|
|
// Library: Foundation
|
|
// Package: Threading
|
|
// Module: ActiveObjects
|
|
//
|
|
// Definition of the ActiveDispatcher class.
|
|
//
|
|
// Copyright (c) 2006-2007, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#ifndef Foundation_ActiveDispatcher_INCLUDED
|
|
#define Foundation_ActiveDispatcher_INCLUDED
|
|
|
|
|
|
#include "Poco/Foundation.h"
|
|
#include "Poco/Runnable.h"
|
|
#include "Poco/Thread.h"
|
|
#include "Poco/ActiveStarter.h"
|
|
#include "Poco/ActiveRunnable.h"
|
|
#include "Poco/NotificationQueue.h"
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
class Foundation_API ActiveDispatcher: protected Runnable
|
|
/// This class is used to implement an active object
|
|
/// with strictly serialized method execution.
|
|
///
|
|
/// An active object, which is an ordinary object
|
|
/// containing ActiveMethod members, executes all
|
|
/// active methods in their own thread.
|
|
/// This behavior does not fit the "classic"
|
|
/// definition of an active object, which serializes
|
|
/// the execution of active methods (in other words,
|
|
/// only one active method can be running at any given
|
|
/// time).
|
|
///
|
|
/// Using this class as a base class, the serializing
|
|
/// behavior for active objects can be implemented.
|
|
///
|
|
/// The following example shows how this is done:
|
|
///
|
|
/// class ActiveObject: public ActiveDispatcher
|
|
/// {
|
|
/// public:
|
|
/// ActiveObject():
|
|
/// exampleActiveMethod(this, &ActiveObject::exampleActiveMethodImpl)
|
|
/// {
|
|
/// }
|
|
///
|
|
/// ActiveMethod<std::string, std::string, ActiveObject, ActiveStarter<ActiveDispatcher> > exampleActiveMethod;
|
|
///
|
|
/// protected:
|
|
/// std::string exampleActiveMethodImpl(const std::string& arg)
|
|
/// {
|
|
/// ...
|
|
/// }
|
|
/// };
|
|
///
|
|
/// The only things different from the example in
|
|
/// ActiveMethod is that the ActiveObject in this case
|
|
/// inherits from ActiveDispatcher, and that the ActiveMethod
|
|
/// template for exampleActiveMethod has an additional parameter,
|
|
/// specifying the specialized ActiveStarter for ActiveDispatcher.
|
|
{
|
|
public:
|
|
ActiveDispatcher();
|
|
/// Creates the ActiveDispatcher.
|
|
|
|
ActiveDispatcher(Thread::Priority prio);
|
|
/// Creates the ActiveDispatcher and sets
|
|
/// the priority of its thread.
|
|
|
|
virtual ~ActiveDispatcher();
|
|
/// Destroys the ActiveDispatcher.
|
|
|
|
void start(ActiveRunnableBase::Ptr pRunnable);
|
|
/// Adds the Runnable to the dispatch queue.
|
|
|
|
void cancel();
|
|
/// Cancels all queued methods.
|
|
|
|
protected:
|
|
void run();
|
|
void stop();
|
|
|
|
private:
|
|
Thread _thread;
|
|
NotificationQueue _queue;
|
|
};
|
|
|
|
|
|
template <>
|
|
class ActiveStarter<ActiveDispatcher>
|
|
/// A specialization of ActiveStarter
|
|
/// for ActiveDispatcher.
|
|
{
|
|
public:
|
|
static void start(ActiveDispatcher* pOwner, ActiveRunnableBase::Ptr pRunnable)
|
|
{
|
|
pOwner->start(pRunnable);
|
|
}
|
|
};
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_ActiveDispatcher_INCLUDED
|