curl/lib/select.h

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C
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#ifndef __SELECT_H
#define __SELECT_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "setup.h"
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#ifdef HAVE_SYS_POLL_H
#include <sys/poll.h>
#elif defined(HAVE_POLL_H)
#include <poll.h>
#endif
/*
* poll() function on Windows Vista and later is called WSAPoll()
*/
#if defined(USE_WINSOCK) && (USE_WINSOCK > 1) && \
defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0600)
# undef HAVE_POLL
# define HAVE_POLL 1
# undef HAVE_POLL_FINE
# define HAVE_POLL_FINE 1
# define poll(x,y,z) WSAPoll((x),(y),(z))
# if defined(_MSC_VER) && defined(POLLRDNORM)
# undef POLLPRI
# define POLLPRI POLLRDBAND
# define HAVE_STRUCT_POLLFD 1
# endif
#endif
/*
* Definition of pollfd struct and constants for platforms lacking them.
*/
#if !defined(HAVE_STRUCT_POLLFD) && \
!defined(HAVE_SYS_POLL_H) && \
!defined(HAVE_POLL_H)
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#define POLLIN 0x01
#define POLLPRI 0x02
#define POLLOUT 0x04
#define POLLERR 0x08
#define POLLHUP 0x10
#define POLLNVAL 0x20
struct pollfd
{
curl_socket_t fd;
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short events;
short revents;
};
#endif
#ifndef POLLRDNORM
#define POLLRDNORM POLLIN
#endif
#ifndef POLLWRNORM
#define POLLWRNORM POLLOUT
#endif
#ifndef POLLRDBAND
#define POLLRDBAND POLLPRI
#endif
int Curl_socket_ready(curl_socket_t readfd, curl_socket_t writefd,
int timeout_ms);
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int Curl_poll(struct pollfd ufds[], unsigned int nfds, int timeout_ms);
#ifdef TPF
int tpf_select_libcurl(int maxfds, fd_set* reads, fd_set* writes,
fd_set* excepts, struct timeval* tv);
#endif
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#endif /* __SELECT_H */