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/*
Copyright (c) 2012 250bpm s.r.o.
Copyright (c) 2012 Other contributors as noted in the AUTHORS file
This file is part of Crossroads I/O project.
Crossroads I/O is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
Crossroads 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __XS_POLLING_HPP_INCLUDED__
#define __XS_POLLING_HPP_INCLUDED__
#include "platform.hpp"
// This header file contains code that decides what polling mechanisms
// should be used in individual cases. It also includes appropriate headers.
//
// ASYNC polling mechanism to drive event loops in the I/O threads.
// SYNC polling mechanism is used in xs_poll() and for blocking API functions.
#if defined XS_FORCE_SELECT
#define XS_USE_ASYNC_SELECT
#elif defined XS_FORCE_POLL
#define XS_USE_ASYNC_POLL
#elif defined XS_FORCE_EPOLL
#define XS_USE_ASYNC_EPOLL
#elif defined XS_FORCE_DEVPOLL
#define XS_USE_ASYNC_DEVPOLL
#elif defined XS_FORCE_KQUEUE
#define XS_USE_ASYNC_KQUEUE
#elif defined XS_HAVE_EPOLL
#define XS_USE_ASYNC_EPOLL
#elif defined XS_HAVE_DEVPOLL
#define XS_USE_ASYNC_DEVPOLL
#elif defined XS_HAVE_KQUEUE
#define XS_USE_ASYNC_KQUEUE
#elif defined XS_HAVE_POLL
#define XS_USE_ASYNC_POLL
#elif defined XS_HAVE_SELECT
#define XS_USE_ASYNC_SELECT
#else
#error No polling mechanism available!
#endif
#if defined XS_FORCE_SELECT
#define XS_USE_SYNC_SELECT
#elif defined XS_FORCE_POLL
#define XS_USE_SYNC_POLL
#elif defined XS_HAVE_POLL
#define XS_USE_SYNC_POLL
#elif defined XS_HAVE_SELECT
#define XS_USE_SYNC_SELECT
#else
#error No polling mechanism available!
#endif
// Conditionally include header files that might be required to use the poll()
// or select() functions
#if defined XS_HAVE_WINDOWS // Windows-specific header files
# include "windows.h"
# include "winsock2.h"
#else // Header files for Unix-like operating systems
# if HAVE_SYS_TYPES
# include <sys/types.h>
# endif
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# endif
# if HAVE_TIME_H
# include <time.h>
# endif
# if HAVE_UNISTD_H
# include <unistd.h>
# endif
# if HAVE_SYS_SELECT_H
# include <sys/select.h>
# endif
# if HAVE_POLL_H
# include <poll.h>
# elif HAVE_SYS_POLL_H
# include <sys/poll.h>
# endif
#endif
#endif // __XS_POLLING_HPP_INCLUDED__
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