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// **********************************************************************
//
// Copyright (c) 2003-2012 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#ifndef ICE_SELECTOR_H
#define ICE_SELECTOR_H
#include <IceUtil/StringUtil.h>
#include <Ice/Network.h>
#include <Ice/InstanceF.h>
#include <Ice/EventHandlerF.h>
#if defined(ICE_USE_EPOLL)
# include <sys/epoll.h>
#elif defined(ICE_USE_KQUEUE)
# include <sys/event.h>
#elif defined(ICE_USE_IOCP)
// Nothing to include
#elif defined(ICE_USE_POLL)
# include <sys/poll.h>
#endif
#if defined(ICE_OS_WINRT)
# include <deque>
#endif
namespace IceInternal
{
//
// Exception raised if select times out.
//
class SelectorTimeoutException
{
};
#if defined(ICE_OS_WINRT)
struct SelectEvent
{
SelectEvent(IceInternal::EventHandler* handler, SocketOperation status) : handler(handler), status(status)
{
}
IceInternal::EventHandler* handler;
SocketOperation status;
};
class Selector : IceUtil::Monitor<IceUtil::Mutex>
{
public:
Selector(const InstancePtr&);
void destroy();
void initialize(IceInternal::EventHandler*);
void update(IceInternal::EventHandler*, SocketOperation, SocketOperation);
void finish(IceInternal::EventHandler*);
IceInternal::EventHandler* getNextHandler(SocketOperation&, int);
void completed(IceInternal::EventHandler*, SocketOperation);
private:
const InstancePtr _instance;
std::deque<SelectEvent> _events;
};
#elif defined(ICE_USE_IOCP)
class Selector
{
public:
Selector(const InstancePtr&);
~Selector();
void setup(int);
void destroy();
void initialize(EventHandler*);
void update(EventHandler*, SocketOperation, SocketOperation);
void finish(EventHandler*);
EventHandler* getNextHandler(SocketOperation&, int);
HANDLE getIOCPHandle() { return _handle; }
private:
const InstancePtr _instance;
HANDLE _handle;
};
#elif defined(ICE_USE_KQUEUE) || defined(ICE_USE_EPOLL)
class Selector
{
public:
Selector(const InstancePtr&);
~Selector();
void destroy();
void initialize(EventHandler*)
{
// Nothing to do
}
void update(EventHandler*, SocketOperation, SocketOperation);
void enable(EventHandler*, SocketOperation);
void disable(EventHandler*, SocketOperation);
void finish(EventHandler*);
#if defined(ICE_USE_KQUEUE)
void updateSelector();
#endif
void
startSelect()
{
#ifdef ICE_USE_KQUEUE
_selecting = true;
if(!_changes.empty())
{
updateSelector();
}
#endif
}
void
finishSelect()
{
#ifdef ICE_USE_KQUEUE
_selecting = false;
#endif
}
void select(std::vector<std::pair<EventHandler*, SocketOperation> >&, int);
private:
const InstancePtr _instance;
#if defined(ICE_USE_EPOLL)
std::vector<struct epoll_event> _events;
#else
std::vector<struct kevent> _events;
std::vector<struct kevent> _changes;
bool _selecting;
#endif
int _queueFd;
};
#elif defined(ICE_USE_SELECT) || defined(ICE_USE_POLL)
class Selector
{
public:
Selector(const InstancePtr&);
~Selector();
void destroy();
void initialize(EventHandler*)
{
// Nothing to do
}
void update(EventHandler*, SocketOperation, SocketOperation);
void enable(EventHandler*, SocketOperation);
void disable(EventHandler*, SocketOperation);
void finish(EventHandler*);
void startSelect();
void finishSelect();
void select(std::vector<std::pair<EventHandler*, SocketOperation> >&, int);
private:
void updateSelector();
void updateImpl(EventHandler*);
const InstancePtr _instance;
SOCKET _fdIntrRead;
SOCKET _fdIntrWrite;
bool _selecting;
bool _interrupted;
std::vector<std::pair<EventHandler*, SocketOperation> > _changes;
std::map<SOCKET, EventHandler*> _handlers;
#if defined(ICE_USE_SELECT)
fd_set _readFdSet;
fd_set _writeFdSet;
fd_set _errorFdSet;
fd_set _selectedReadFdSet;
fd_set _selectedWriteFdSet;
fd_set _selectedErrorFdSet;
fd_set*
fdSetCopy(fd_set& dest, fd_set& src)
{
if(src.fd_count > 0)
{
dest.fd_count = src.fd_count;
memcpy(dest.fd_array, src.fd_array, sizeof(SOCKET) * src.fd_count);
return &dest;
}
return 0;
}
#else
std::vector<struct pollfd> _pollFdSet;
#endif
};
#endif
}
#endif
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