1#ifndef __SELECT_H
2#define __SELECT_H
3/***************************************************************************
4 *                                  _   _ ____  _
5 *  Project                     ___| | | |  _ \| |
6 *                             / __| | | | |_) | |
7 *                            | (__| |_| |  _ <| |___
8 *                             \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
11 *
12 * This software is licensed as described in the file COPYING, which
13 * you should have received as part of this distribution. The terms
14 * are also available at http://curl.haxx.se/docs/copyright.html.
15 *
16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17 * copies of the Software, and permit persons to whom the Software is
18 * furnished to do so, under the terms of the COPYING file.
19 *
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
22 *
23 ***************************************************************************/
24
25#include "setup.h"
26
27#ifdef HAVE_SYS_POLL_H
28#include <sys/poll.h>
29#elif defined(HAVE_POLL_H)
30#include <poll.h>
31#endif
32
33/*
34 * poll() function on Windows Vista and later is called WSAPoll()
35 */
36
37#if defined(USE_WINSOCK) && (USE_WINSOCK > 1) && \
38    defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0600)
39#  undef  HAVE_POLL
40#  define HAVE_POLL 1
41#  undef  HAVE_POLL_FINE
42#  define HAVE_POLL_FINE 1
43#  define poll(x,y,z) WSAPoll((x),(y),(z))
44#  if defined(_MSC_VER) && defined(POLLRDNORM)
45#    undef  POLLPRI
46#    define POLLPRI POLLRDBAND
47#    define HAVE_STRUCT_POLLFD 1
48#  endif
49#endif
50
51/*
52 * Definition of pollfd struct and constants for platforms lacking them.
53 */
54
55#if !defined(HAVE_STRUCT_POLLFD) && \
56    !defined(HAVE_SYS_POLL_H) && \
57    !defined(HAVE_POLL_H)
58
59#define POLLIN      0x01
60#define POLLPRI     0x02
61#define POLLOUT     0x04
62#define POLLERR     0x08
63#define POLLHUP     0x10
64#define POLLNVAL    0x20
65
66struct pollfd
67{
68    curl_socket_t fd;
69    short   events;
70    short   revents;
71};
72
73#endif
74
75#ifndef POLLRDNORM
76#define POLLRDNORM POLLIN
77#endif
78
79#ifndef POLLWRNORM
80#define POLLWRNORM POLLOUT
81#endif
82
83#ifndef POLLRDBAND
84#define POLLRDBAND POLLPRI
85#endif
86
87int Curl_socket_ready(curl_socket_t readfd, curl_socket_t writefd,
88                      long timeout_ms);
89
90int Curl_poll(struct pollfd ufds[], unsigned int nfds, int timeout_ms);
91
92int Curl_wait_ms(int timeout_ms);
93
94#ifdef TPF
95int tpf_select_libcurl(int maxfds, fd_set* reads, fd_set* writes,
96                       fd_set* excepts, struct timeval* tv);
97#endif
98
99/* Winsock and TPF sockets are not in range [0..FD_SETSIZE-1], which
100   unfortunately makes it impossible for us to easily check if they're valid
101*/
102#if defined(USE_WINSOCK) || defined(TPF)
103#define VALID_SOCK(x) 1
104#define VERIFY_SOCK(x) Curl_nop_stmt
105#else
106#define VALID_SOCK(s) (((s) >= 0) && ((s) < FD_SETSIZE))
107#define VERIFY_SOCK(x) do { \
108  if(!VALID_SOCK(x)) { \
109    SET_SOCKERRNO(EINVAL); \
110    return -1; \
111  } \
112} WHILE_FALSE
113#endif
114
115#endif /* __SELECT_H */
116