1 | #ifndef HEADER_CURL_SELECT_H
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2 | #define HEADER_CURL_SELECT_H
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3 | /***************************************************************************
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4 | * _ _ ____ _
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5 | * Project ___| | | | _ \| |
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6 | * / __| | | | |_) | |
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7 | * | (__| |_| | _ <| |___
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8 | * \___|\___/|_| \_\_____|
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9 | *
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10 | * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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11 | *
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12 | * This software is licensed as described in the file COPYING, which
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13 | * you should have received as part of this distribution. The terms
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14 | * are also available at https://curl.haxx.se/docs/copyright.html.
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15 | *
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16 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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17 | * copies of the Software, and permit persons to whom the Software is
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18 | * furnished to do so, under the terms of the COPYING file.
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19 | *
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20 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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21 | * KIND, either express or implied.
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22 | *
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23 | ***************************************************************************/
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24 |
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25 | #include "curl_setup.h"
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26 |
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27 | #ifdef HAVE_POLL_H
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28 | #include <poll.h>
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29 | #elif defined(HAVE_SYS_POLL_H)
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30 | #include <sys/poll.h>
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31 | #endif
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32 |
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33 | /*
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34 | * Definition of pollfd struct and constants for platforms lacking them.
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35 | */
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36 |
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37 | #if !defined(HAVE_STRUCT_POLLFD) && \
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38 | !defined(HAVE_SYS_POLL_H) && \
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39 | !defined(HAVE_POLL_H) && \
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40 | !defined(POLLIN)
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41 |
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42 | #define POLLIN 0x01
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43 | #define POLLPRI 0x02
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44 | #define POLLOUT 0x04
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45 | #define POLLERR 0x08
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46 | #define POLLHUP 0x10
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47 | #define POLLNVAL 0x20
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48 |
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49 | struct pollfd
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50 | {
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51 | curl_socket_t fd;
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52 | short events;
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53 | short revents;
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54 | };
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55 |
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56 | #endif
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57 |
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58 | #ifndef POLLRDNORM
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59 | #define POLLRDNORM POLLIN
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60 | #endif
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61 |
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62 | #ifndef POLLWRNORM
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63 | #define POLLWRNORM POLLOUT
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64 | #endif
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65 |
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66 | #ifndef POLLRDBAND
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67 | #define POLLRDBAND POLLPRI
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68 | #endif
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69 |
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70 | /* there are three CSELECT defines that are defined in the public header that
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71 | are exposed to users, but this *IN2 bit is only ever used internally and
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72 | therefore defined here */
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73 | #define CURL_CSELECT_IN2 (CURL_CSELECT_ERR << 1)
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74 |
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75 | int Curl_socket_check(curl_socket_t readfd, curl_socket_t readfd2,
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76 | curl_socket_t writefd,
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77 | time_t timeout_ms);
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78 |
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79 | #define SOCKET_READABLE(x,z) \
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80 | Curl_socket_check(x, CURL_SOCKET_BAD, CURL_SOCKET_BAD, z)
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81 | #define SOCKET_WRITABLE(x,z) \
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82 | Curl_socket_check(CURL_SOCKET_BAD, CURL_SOCKET_BAD, x, z)
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83 |
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84 | int Curl_poll(struct pollfd ufds[], unsigned int nfds, int timeout_ms);
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85 |
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86 | /* On non-DOS and non-Winsock platforms, when Curl_ack_eintr is set,
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87 | * EINTR condition is honored and function might exit early without
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88 | * awaiting full timeout. Otherwise EINTR will be ignored and full
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89 | * timeout will elapse. */
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90 | extern int Curl_ack_eintr;
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91 |
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92 | int Curl_wait_ms(int timeout_ms);
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93 |
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94 | #ifdef TPF
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95 | int tpf_select_libcurl(int maxfds, fd_set* reads, fd_set* writes,
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96 | fd_set* excepts, struct timeval* tv);
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97 | #endif
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98 |
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99 | /* Winsock and TPF sockets are not in range [0..FD_SETSIZE-1], which
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100 | unfortunately makes it impossible for us to easily check if they're valid
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101 | */
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102 | #if defined(USE_WINSOCK) || defined(TPF)
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103 | #define VALID_SOCK(x) 1
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104 | #define VERIFY_SOCK(x) Curl_nop_stmt
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105 | #else
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106 | #define VALID_SOCK(s) (((s) >= 0) && ((s) < FD_SETSIZE))
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107 | #define VERIFY_SOCK(x) do { \
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108 | if(!VALID_SOCK(x)) { \
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109 | SET_SOCKERRNO(EINVAL); \
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110 | return -1; \
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111 | } \
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112 | } WHILE_FALSE
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113 | #endif
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114 |
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115 | #endif /* HEADER_CURL_SELECT_H */
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