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| 1 | /*
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| 2 | * poll.h
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| 3 | *
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| 4 | * Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
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| 5 | * This program is free software; you can redistribute it and/or
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| 6 | * modify it under the same terms as Perl itself.
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| 7 | *
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| 8 | */
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| 9 |
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| 10 | #ifndef POLL_H
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| 11 | # define POLL_H
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| 12 |
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| 13 | #if (defined(HAS_POLL) && defined(I_POLL)) || defined(POLLWRBAND)
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| 14 | # include <poll.h>
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| 15 | #else
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| 16 | #ifdef HAS_SELECT
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| 17 |
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| 18 |
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| 19 | /* We shall emulate poll using select */
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| 20 |
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| 21 | #define EMULATE_POLL_WITH_SELECT
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| 22 |
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| 23 | #ifdef poll
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| 24 | # undef poll
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| 25 | #endif
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| 26 | #define poll Perl_my_poll
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| 27 |
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| 28 | typedef struct pollfd {
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| 29 | int fd;
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| 30 | short events;
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| 31 | short revents;
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| 32 | } pollfd_t;
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| 33 |
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| 34 | #define POLLIN 0x0001
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| 35 | #define POLLPRI 0x0002
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| 36 | #define POLLOUT 0x0004
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| 37 | #define POLLRDNORM 0x0040
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| 38 | #define POLLWRNORM POLLOUT
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| 39 | #define POLLRDBAND 0x0080
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| 40 | #define POLLWRBAND 0x0100
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| 41 | #define POLLNORM POLLRDNORM
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| 42 |
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| 43 | /* Return ONLY events (NON testable) */
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| 44 |
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| 45 | #define POLLERR 0x0008
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| 46 | #define POLLHUP 0x0010
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| 47 | #define POLLNVAL 0x0020
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| 48 |
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| 49 | int poll (struct pollfd *, unsigned long, int);
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| 50 |
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| 51 | #ifndef HAS_POLL
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| 52 | # define HAS_POLL
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| 53 | #endif
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| 54 |
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| 55 | #endif /* HAS_SELECT */
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| 56 |
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| 57 | #endif /* I_POLL */
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| 58 |
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| 59 | #endif /* POLL_H */
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| 60 |
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