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|---|
| cf7fe8a2 |
1 | /* |
| 2 | * poll.h |
| 3 | * |
| 4 | * Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved. |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the same terms as Perl itself. |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | #ifndef POLL_H |
| 11 | # define POLL_H |
| 12 | |
| 69077c19 |
13 | #if (defined(HAS_POLL) && defined(I_POLL)) || defined(POLLWRBAND) |
| cf7fe8a2 |
14 | # include <poll.h> |
| cf7fe8a2 |
15 | #else |
| 16 | #ifdef HAS_SELECT |
| 17 | |
| 18 | |
| 19 | /* We shall emulate poll using select */ |
| 20 | |
| 21 | #define EMULATE_POLL_WITH_SELECT |
| 22 | |
| 23 | typedef struct pollfd { |
| 24 | int fd; |
| 25 | short events; |
| 26 | short revents; |
| 27 | } pollfd_t; |
| 28 | |
| 29 | #define POLLIN 0x0001 |
| 30 | #define POLLPRI 0x0002 |
| 31 | #define POLLOUT 0x0004 |
| 32 | #define POLLRDNORM 0x0040 |
| 33 | #define POLLWRNORM POLLOUT |
| 34 | #define POLLRDBAND 0x0080 |
| 35 | #define POLLWRBAND 0x0100 |
| 36 | #define POLLNORM POLLRDNORM |
| 37 | |
| 38 | /* Return ONLY events (NON testable) */ |
| 39 | |
| 40 | #define POLLERR 0x0008 |
| 41 | #define POLLHUP 0x0010 |
| 42 | #define POLLNVAL 0x0020 |
| 43 | |
| 20ce7b12 |
44 | int poll (struct pollfd *, unsigned long, int); |
| cf7fe8a2 |
45 | |
| 46 | #ifndef HAS_POLL |
| 47 | # define HAS_POLL |
| 48 | #endif |
| 49 | |
| 50 | #endif /* HAS_SELECT */ |
| 51 | |
| 52 | #endif /* I_POLL */ |
| 53 | |
| 54 | #endif /* POLL_H */ |
| 55 | |
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