1 #ifndef HEADER_CURL_SELECT_H
2 #define HEADER_CURL_SELECT_H
3 /***************************************************************************
5 * Project ___| | | | _ \| |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
10 * Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
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 https://curl.se/docs/copyright.html.
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.
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
23 * SPDX-License-Identifier: curl
25 ***************************************************************************/
27 #include "curl_setup.h"
31 #elif defined(HAVE_SYS_POLL_H)
36 * Definition of pollfd struct and constants for platforms lacking them.
39 #if !defined(HAVE_SYS_POLL_H) && \
40 !defined(HAVE_POLL_H) && \
60 #define POLLRDNORM POLLIN
64 #define POLLWRNORM POLLOUT
68 #define POLLRDBAND POLLPRI
71 /* there are three CSELECT defines that are defined in the public header that
72 are exposed to users, but this *IN2 bit is only ever used internally and
73 therefore defined here */
74 #define CURL_CSELECT_IN2 (CURL_CSELECT_ERR << 1)
76 int Curl_socket_check(curl_socket_t readfd, curl_socket_t readfd2,
77 curl_socket_t writefd,
78 timediff_t timeout_ms);
79 #define SOCKET_READABLE(x,z) \
80 Curl_socket_check(x, CURL_SOCKET_BAD, CURL_SOCKET_BAD, z)
81 #define SOCKET_WRITABLE(x,z) \
82 Curl_socket_check(CURL_SOCKET_BAD, CURL_SOCKET_BAD, x, z)
84 int Curl_poll(struct pollfd ufds[], unsigned int nfds, timediff_t timeout_ms);
85 int Curl_wait_ms(timediff_t timeout_ms);
88 With Winsock the valid range is [0..INVALID_SOCKET-1] according to
89 https://docs.microsoft.com/en-us/windows/win32/winsock/socket-data-type-2
92 #define VALID_SOCK(s) ((s) < INVALID_SOCKET)
93 #define FDSET_SOCK(x) 1
94 #define VERIFY_SOCK(x) do { \
95 if(!VALID_SOCK(x)) { \
96 SET_SOCKERRNO(WSAEINVAL); \
101 #define VALID_SOCK(s) ((s) >= 0)
103 /* If the socket is small enough to get set or read from an fdset */
104 #define FDSET_SOCK(s) ((s) < FD_SETSIZE)
106 #define VERIFY_SOCK(x) do { \
107 if(!VALID_SOCK(x) || !FDSET_SOCK(x)) { \
108 SET_SOCKERRNO(EINVAL); \
114 #endif /* HEADER_CURL_SELECT_H */