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// **********************************************************************
//
// Copyright (c) 2003-2007 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 <Ice/Config.h>
#include <Ice/InstanceF.h>
#if defined(_WIN32)
# include <winsock2.h>
#else
# define SOCKET int
# if defined(ICE_USE_EPOLL)
# include <sys/epoll.h>
# elif defined(__APPLE__)
# include <sys/event.h>
# else
# include <sys/poll.h>
# endif
#endif
namespace IceInternal
{
enum SocketStatus
{
Finished,
NeedConnect,
NeedRead,
NeedWrite
};
class Selector
{
public:
Selector(const InstancePtr&, int = 0);
~Selector();
void add(SOCKET, SocketStatus);
void remove(SOCKET, SocketStatus);
int select();
SOCKET getNextSelected();
bool isInterrupted()
{
assert(_nSelected > 0);
#if defined(_WIN32)
return FD_ISSET(_fdIntrRead, &_selectedReadFdSet);
#elif defined(ICE_USE_EPOLL)
for(unsigned int i = 0; i < _nSelected; ++i)
{
if(_events[i].data.fd == _fdIntrRead)
{
return true;
}
}
return false;
#elif defined(__APPLE__)
for(unsigned int i = 0; i < _nSelected; ++i)
{
if(_events[i].ident == static_cast<unsigned int>(_fdIntrRead))
{
return true;
}
}
return false;
#else
assert(_pollFdSet[0].fd == _fdIntrRead);
return _pollFdSet[0].revents != 0;
#endif
}
void setInterrupt();
void clearInterrupt();
void updateMinMax(SOCKET minFd, SOCKET maxFd);
void clearMinMax();
#if defined(_WIN32)
void incFdsInUse();
void decFdsInUse();
#endif
private:
InstancePtr _instance;
int _timeout;
SOCKET _maxFd;
SOCKET _lastFd;
unsigned int _nSelected;
unsigned int _nSelectedReturned;
SOCKET _fdIntrRead;
SOCKET _fdIntrWrite;
#if defined(_WIN32)
fd_set _readFdSet;
fd_set _writeFdSet;
fd_set _errorFdSet;
fd_set _selectedReadFdSet;
fd_set _selectedWriteFdSet;
fd_set _selectedErrorFdSet;
int _fdsInUse;
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;
}
#elif defined(ICE_USE_EPOLL)
int _epollFd;
std::vector<struct epoll_event> _events;
#elif defined(__APPLE__)
int _kqueueFd;
std::vector<struct kevent> _events;
#else
std::vector<struct pollfd> _pollFdSet;
#endif
};
}
#endif
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