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Diffstat (limited to 'Sockets/EventHandler.cpp')
| -rw-r--r-- | Sockets/EventHandler.cpp | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/Sockets/EventHandler.cpp b/Sockets/EventHandler.cpp new file mode 100644 index 0000000..4d90342 --- /dev/null +++ b/Sockets/EventHandler.cpp @@ -0,0 +1,223 @@ +/** \file EventHandler.cpp + ** \date 2005-12-07 + ** \author grymse@alhem.net +**/ +/* +Copyright (C) 2005,2007 Anders Hedstrom + +This library is made available under the terms of the GNU GPL. + +If you would like to use this library in a closed-source application, +a separate license agreement is available. For information about +the closed-source license agreement for the C++ sockets library, +please visit http://www.alhem.net/Sockets/license.html and/or +email license@alhem.net. + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +*/ +#ifdef _MSC_VER +#pragma warning(disable:4786) +#endif +#include "EventHandler.h" +#include "IEventOwner.h" +#include "Event.h" +#include "Socket.h" +#include "TcpSocket.h" +#include "ListenSocket.h" + + +#ifdef SOCKETS_NAMESPACE +namespace SOCKETS_NAMESPACE { +#endif + + +EventHandler::EventHandler(StdLog *p) : SocketHandler(p), m_quit(false), m_socket(NULL) +{ +} + + +EventHandler::EventHandler(Mutex& m,StdLog *p) : SocketHandler(m, p), m_quit(false), m_socket(NULL) +{ +} + + +EventHandler::~EventHandler() +{ + while (m_events.size()) + { + std::list<Event *>::iterator it = m_events.begin(); + Event *e = *it; + e -> GetFrom() -> SetHandlerInvalid(); + delete e; + m_events.erase(it); + } +} + + +bool EventHandler::GetTimeUntilNextEvent(struct timeval *tv) +{ + if (!m_events.size()) + return false; + std::list<Event *>::iterator it = m_events.begin(); + if (it != m_events.end()) + { + EventTime now; + mytime_t diff = (*it) -> GetTime() - now; + if (diff < 1) + { + diff = 1; + } + tv -> tv_sec = static_cast<long>(diff / 1000000); + tv -> tv_usec = static_cast<long>(diff % 1000000); + return true; + } + return false; +} + + +void EventHandler::CheckEvents() +{ + EventTime now; + std::list<Event *>::iterator it = m_events.begin(); + while (it != m_events.end() && (*it) -> GetTime() < now) + { + Event *e = *it; + Socket *s = dynamic_cast<Socket *>(e -> GetFrom()); + /* + s == NULL This is another object implementing 'IEventOwner' and not a socket. + s != NULL This is a Socket implementing IEventOwner, and we can check that the + object instance still is valid using SocketHandler::Valid. + */ + if (!s || (s && Valid(s))) + { + e -> GetFrom() -> OnEvent(e -> GetID()); + } + for (it = m_events.begin(); it != m_events.end(); ++it) + if (*it == e) + break; + delete e; + if (it != m_events.end()) + m_events.erase(it); + it = m_events.begin(); + } +} + + +long EventHandler::AddEvent(IEventOwner *from,long sec,long usec) +{ + Event *e = new Event(from, sec, usec); + std::list<Event *>::iterator it = m_events.begin(); + while (it != m_events.end() && *(*it) < *e) + { + it++; + } + m_events.insert(it, e); + if (m_socket) + { + m_socket -> Send("\n"); + } + return e -> GetID(); +} + + +void EventHandler::ClearEvents(IEventOwner *from) +{ + bool repeat; + do + { + repeat = false; + for (std::list<Event *>::iterator it = m_events.begin(); it != m_events.end(); it++) + { + Event *e = *it; + if (e -> GetFrom() == from) + { + delete e; + m_events.erase(it); + repeat = true; + break; + } + } + } while (repeat); +} + + +void EventHandler::EventLoop() +{ + while (!m_quit) + { + struct timeval tv; + if (GetTimeUntilNextEvent(&tv)) + { + Select(&tv); + CheckEvents(); + } + else + { + Select(); + } + } +} + + +void EventHandler::SetQuit(bool x) +{ + m_quit = x; +} + + +void EventHandler::RemoveEvent(IEventOwner *from, long eid) +{ + for (std::list<Event *>::iterator it = m_events.begin(); it != m_events.end(); it++) + { + Event *e = *it; + if (from == e -> GetFrom() && eid == e -> GetID()) + { + delete e; + m_events.erase(it); + break; + } + } +} + + +void EventHandler::Add(Socket *p) +{ + if (!m_socket) + { + ListenSocket<TcpSocket> *l = new ListenSocket<TcpSocket>(*this); + l -> SetDeleteByHandler(); + l -> Bind("127.0.0.1", 0); + m_port = l -> GetPort(); + SocketHandler::Add(l); + m_socket = new TcpSocket( *this ); + m_socket -> SetDeleteByHandler(); + m_socket -> SetConnectTimeout(5); + m_socket -> SetConnectionRetry(-1); +#ifdef ENABLE_RECONNECT + m_socket -> SetReconnect(true); +#endif + m_socket -> Open("127.0.0.1", m_port); + SocketHandler::Add(m_socket); + } + SocketHandler::Add( p ); +} + + +#ifdef SOCKETS_NAMESPACE +} +#endif + + + |