new trunk (base for 1.5)

windows build only

Net/src/SocketReactor.cpp

@@ -0,0 +1,288 @@
+//
+// SocketReactor.cpp
+//
+// $Id: //poco/1.4/Net/src/SocketReactor.cpp#1 $
+//
+// Library: Net
+// Package: Reactor
+// Module:  SocketReactor
+//
+// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+// 
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+
+
+#include "Poco/Net/SocketReactor.h"
+#include "Poco/Net/SocketNotification.h"
+#include "Poco/Net/SocketNotifier.h"
+#include "Poco/ErrorHandler.h"
+#include "Poco/Thread.h"
+#include "Poco/Exception.h"
+
+
+using Poco::FastMutex;
+using Poco::Exception;
+using Poco::ErrorHandler;
+
+
+namespace Poco {
+namespace Net {
+
+
+SocketReactor::SocketReactor():
+	_stop(false),
+	_timeout(DEFAULT_TIMEOUT),
+	_pReadableNotification(new ReadableNotification(this)),
+	_pWritableNotification(new WritableNotification(this)),
+	_pErrorNotification(new ErrorNotification(this)),
+	_pTimeoutNotification(new TimeoutNotification(this)),
+	_pIdleNotification(new IdleNotification(this)),
+	_pShutdownNotification(new ShutdownNotification(this))
+{
+}
+
+
+SocketReactor::SocketReactor(const Poco::Timespan& timeout):
+	_stop(false),
+	_timeout(timeout),
+	_pReadableNotification(new ReadableNotification(this)),
+	_pWritableNotification(new WritableNotification(this)),
+	_pErrorNotification(new ErrorNotification(this)),
+	_pTimeoutNotification(new TimeoutNotification(this)),
+	_pIdleNotification(new IdleNotification(this)),
+	_pShutdownNotification(new ShutdownNotification(this))
+{
+}
+
+
+SocketReactor::~SocketReactor()
+{
+}
+
+
+void SocketReactor::run()
+{
+	Socket::SocketList readable;
+	Socket::SocketList writable;
+	Socket::SocketList except;
+	
+	while (!_stop)
+	{
+		try
+		{
+			readable.clear();
+			writable.clear();
+			except.clear();
+			int nSockets = 0;
+			{
+				FastMutex::ScopedLock lock(_mutex);
+				for (EventHandlerMap::iterator it = _handlers.begin(); it != _handlers.end(); ++it)
+				{
+					if (it->second->accepts(_pReadableNotification))
+					{
+						readable.push_back(it->first);
+						nSockets++;
+					}
+					if (it->second->accepts(_pWritableNotification))
+					{
+						writable.push_back(it->first);
+						nSockets++;
+					}
+					if (it->second->accepts(_pErrorNotification))
+					{
+						except.push_back(it->first);
+						nSockets++;
+					}
+				}
+			}
+			if (nSockets == 0)
+			{
+				onIdle();
+			}
+			else if (Socket::select(readable, writable, except, _timeout))
+			{
+				onBusy();
+
+				for (Socket::SocketList::iterator it = readable.begin(); it != readable.end(); ++it)
+					dispatch(*it, _pReadableNotification);
+				for (Socket::SocketList::iterator it = writable.begin(); it != writable.end(); ++it)
+					dispatch(*it, _pWritableNotification);
+				for (Socket::SocketList::iterator it = except.begin(); it != except.end(); ++it)
+					dispatch(*it, _pErrorNotification);
+			}
+			else onTimeout();
+		}
+		catch (Exception& exc)
+		{
+			ErrorHandler::handle(exc);
+		}
+		catch (std::exception& exc)
+		{
+			ErrorHandler::handle(exc);
+		}
+		catch (...)
+		{
+			ErrorHandler::handle();
+		}
+	}
+	onShutdown();
+}
+
+	
+void SocketReactor::stop()
+{
+	_stop = true;
+}
+
+
+void SocketReactor::setTimeout(const Poco::Timespan& timeout)
+{
+	_timeout = timeout;
+}
+
+	
+const Poco::Timespan& SocketReactor::getTimeout() const
+{
+	return _timeout;
+}
+
+
+void SocketReactor::addEventHandler(const Socket& socket, const Poco::AbstractObserver& observer)
+{
+	NotifierPtr pNotifier;
+	{
+		FastMutex::ScopedLock lock(_mutex);
+		
+		EventHandlerMap::iterator it = _handlers.find(socket);
+		if (it == _handlers.end())
+		{
+			pNotifier = new SocketNotifier(socket);
+			_handlers[socket] = pNotifier;
+		}
+		else pNotifier = it->second;
+	}
+	pNotifier->addObserver(this, observer);
+}
+
+
+void SocketReactor::removeEventHandler(const Socket& socket, const Poco::AbstractObserver& observer)
+{
+	NotifierPtr pNotifier;
+	{
+		FastMutex::ScopedLock lock(_mutex);
+		
+		EventHandlerMap::iterator it = _handlers.find(socket);
+		if (it != _handlers.end())
+		{
+			pNotifier = it->second;
+			if (pNotifier->countObservers() == 1)
+			{
+				_handlers.erase(it);
+			}
+		}
+	}
+	if (pNotifier)
+	{
+		pNotifier->removeObserver(this, observer);
+	}
+}
+
+
+void SocketReactor::onTimeout()
+{
+	dispatch(_pTimeoutNotification);
+}
+
+
+void SocketReactor::onIdle()
+{
+	dispatch(_pIdleNotification);
+}
+
+
+void SocketReactor::onShutdown()
+{
+	dispatch(_pShutdownNotification);
+}
+
+
+void SocketReactor::onBusy()
+{
+}
+
+
+void SocketReactor::dispatch(const Socket& socket, SocketNotification* pNotification)
+{
+	NotifierPtr pNotifier;
+	{
+		FastMutex::ScopedLock lock(_mutex);
+		EventHandlerMap::iterator it = _handlers.find(socket);
+		if (it != _handlers.end())
+			pNotifier = it->second;
+		else
+			return;
+	}
+	dispatch(pNotifier, pNotification);
+}
+
+
+void SocketReactor::dispatch(SocketNotification* pNotification)
+{
+	std::vector<NotifierPtr> delegates;
+	delegates.reserve(_handlers.size());
+	{
+		FastMutex::ScopedLock lock(_mutex);
+		for (EventHandlerMap::iterator it = _handlers.begin(); it != _handlers.end(); ++it)
+			delegates.push_back(it->second);
+	}
+	for (std::vector<NotifierPtr>::iterator it = delegates.begin(); it != delegates.end(); ++it)
+	{
+		dispatch(*it, pNotification);
+	}
+}
+
+
+void SocketReactor::dispatch(NotifierPtr& pNotifier, SocketNotification* pNotification)
+{
+	try
+	{
+		pNotifier->dispatch(pNotification);
+	}
+	catch (Exception& exc)
+	{
+		ErrorHandler::handle(exc);
+	}
+	catch (std::exception& exc)
+	{
+		ErrorHandler::handle(exc);
+	}
+	catch (...)
+	{
+		ErrorHandler::handle();
+	}
+}
+
+
+} } // namespace Poco::Net