1#ifndef HEADER_CURL_SELECT_H 2#define HEADER_CURL_SELECT_H 3/*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2016, 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 https://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 "curl_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 * Definition of pollfd struct and constants for platforms lacking them. 35 */ 36 37#if !defined(HAVE_STRUCT_POLLFD) && \ 38 !defined(HAVE_SYS_POLL_H) && \ 39 !defined(HAVE_POLL_H) 40 41#define POLLIN 0x01 42#define POLLPRI 0x02 43#define POLLOUT 0x04 44#define POLLERR 0x08 45#define POLLHUP 0x10 46#define POLLNVAL 0x20 47 48struct pollfd 49{ 50 curl_socket_t fd; 51 short events; 52 short revents; 53}; 54 55#endif 56 57#ifndef POLLRDNORM 58#define POLLRDNORM POLLIN 59#endif 60 61#ifndef POLLWRNORM 62#define POLLWRNORM POLLOUT 63#endif 64 65#ifndef POLLRDBAND 66#define POLLRDBAND POLLPRI 67#endif 68 69/* there are three CSELECT defines that are defined in the public header that 70 are exposed to users, but this *IN2 bit is only ever used internally and 71 therefore defined here */ 72#define CURL_CSELECT_IN2 (CURL_CSELECT_ERR << 1) 73 74int Curl_socket_check(curl_socket_t readfd, curl_socket_t readfd2, 75 curl_socket_t writefd, 76 time_t timeout_ms); 77 78#define SOCKET_READABLE(x,z) \ 79 Curl_socket_check(x, CURL_SOCKET_BAD, CURL_SOCKET_BAD, z) 80#define SOCKET_WRITABLE(x,z) \ 81 Curl_socket_check(CURL_SOCKET_BAD, CURL_SOCKET_BAD, x, z) 82 83int Curl_poll(struct pollfd ufds[], unsigned int nfds, int timeout_ms); 84 85/* On non-DOS and non-Winsock platforms, when Curl_ack_eintr is set, 86 * EINTR condition is honored and function might exit early without 87 * awaiting full timeout. Otherwise EINTR will be ignored and full 88 * timeout will elapse. */ 89extern int Curl_ack_eintr; 90 91int Curl_wait_ms(int timeout_ms); 92 93#ifdef TPF 94int tpf_select_libcurl(int maxfds, fd_set* reads, fd_set* writes, 95 fd_set* excepts, struct timeval* tv); 96#endif 97 98/* Winsock and TPF sockets are not in range [0..FD_SETSIZE-1], which 99 unfortunately makes it impossible for us to easily check if they're valid 100*/ 101#if defined(USE_WINSOCK) || defined(TPF) 102#define VALID_SOCK(x) 1 103#define VERIFY_SOCK(x) Curl_nop_stmt 104#else 105#define VALID_SOCK(s) (((s) >= 0) && ((s) < FD_SETSIZE)) 106#define VERIFY_SOCK(x) do { \ 107 if(!VALID_SOCK(x)) { \ 108 SET_SOCKERRNO(EINVAL); \ 109 return -1; \ 110 } \ 111} WHILE_FALSE 112#endif 113 114#endif /* HEADER_CURL_SELECT_H */ 115 116