1 | #ifndef HEADER_CURL_SELECT_H |
2 | #define |
3 | /*************************************************************************** |
4 | * _ _ ____ _ |
5 | * Project ___| | | | _ \| | |
6 | * / __| | | | |_) | | |
7 | * | (__| |_| | _ <| |___ |
8 | * \___|\___/|_| \_\_____| |
9 | * |
10 | * Copyright (C) 1998 - 2019, 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_POLL_H |
28 | #include <poll.h> |
29 | #elif defined(HAVE_SYS_POLL_H) |
30 | #include <sys/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 | !defined(POLLIN) |
41 | |
42 | #define POLLIN 0x01 |
43 | #define POLLPRI 0x02 |
44 | #define POLLOUT 0x04 |
45 | #define POLLERR 0x08 |
46 | #define POLLHUP 0x10 |
47 | #define POLLNVAL 0x20 |
48 | |
49 | struct pollfd |
50 | { |
51 | curl_socket_t fd; |
52 | short events; |
53 | short revents; |
54 | }; |
55 | |
56 | #endif |
57 | |
58 | #ifndef POLLRDNORM |
59 | #define POLLRDNORM POLLIN |
60 | #endif |
61 | |
62 | #ifndef POLLWRNORM |
63 | #define POLLWRNORM POLLOUT |
64 | #endif |
65 | |
66 | #ifndef POLLRDBAND |
67 | #define POLLRDBAND POLLPRI |
68 | #endif |
69 | |
70 | /* there are three CSELECT defines that are defined in the public header that |
71 | are exposed to users, but this *IN2 bit is only ever used internally and |
72 | therefore defined here */ |
73 | #define CURL_CSELECT_IN2 (CURL_CSELECT_ERR << 1) |
74 | |
75 | int Curl_socket_check(curl_socket_t readfd, curl_socket_t readfd2, |
76 | curl_socket_t writefd, |
77 | time_t timeout_ms); |
78 | |
79 | #define SOCKET_READABLE(x,z) \ |
80 | Curl_socket_check(x, CURL_SOCKET_BAD, CURL_SOCKET_BAD, (time_t)z) |
81 | #define SOCKET_WRITABLE(x,z) \ |
82 | Curl_socket_check(CURL_SOCKET_BAD, CURL_SOCKET_BAD, x, (time_t)z) |
83 | |
84 | int Curl_poll(struct pollfd ufds[], unsigned int nfds, int timeout_ms); |
85 | |
86 | /* On non-DOS and non-Winsock platforms, when Curl_ack_eintr is set, |
87 | * EINTR condition is honored and function might exit early without |
88 | * awaiting full timeout. Otherwise EINTR will be ignored and full |
89 | * timeout will elapse. */ |
90 | extern int Curl_ack_eintr; |
91 | |
92 | int Curl_wait_ms(int timeout_ms); |
93 | |
94 | #ifdef TPF |
95 | int 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(0) |
113 | #endif |
114 | |
115 | #endif /* HEADER_CURL_SELECT_H */ |
116 | |