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/** \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
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