64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
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* Public domain
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*
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* poll(2) emulation for Windows
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*
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* This emulates just-enough poll functionality on Windows to work in the
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* context of the openssl(1) program. This is not a replacement for
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* POSIX.1-2001 poll(2).
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*
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* Dongsheng Song <dongsheng.song@gmail.com>
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* Brent Cook <bcook@openbsd.org>
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*/
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#ifndef LIBCRYPTOCOMPAT_POLL_H
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#define LIBCRYPTOCOMPAT_POLL_H
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#ifdef HAVE_POLL
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#include_next <poll.h>
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#else
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#include <winsock2.h>
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/* Type used for the number of file descriptors. */
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typedef unsigned long int nfds_t;
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#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0600)
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/* Data structure describing a polling request. */
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struct pollfd {
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int fd; /* file descriptor */
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short events; /* requested events */
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short revents; /* returned events */
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};
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/* Event types that can be polled */
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#define POLLIN 0x001 /* There is data to read. */
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#define POLLPRI 0x002 /* There is urgent data to read. */
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#define POLLOUT 0x004 /* Writing now will not block. */
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# define POLLRDNORM 0x040 /* Normal data may be read. */
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# define POLLRDBAND 0x080 /* Priority data may be read. */
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# define POLLWRNORM 0x100 /* Writing now will not block. */
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# define POLLWRBAND 0x200 /* Priority data may be written. */
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/* Event types always implicitly polled. */
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#define POLLERR 0x008 /* Error condition. */
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#define POLLHUP 0x010 /* Hung up. */
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#define POLLNVAL 0x020 /* Invalid polling request. */
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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int poll(struct pollfd *pfds, nfds_t nfds, int timeout);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAVE_POLL */
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#endif /* LIBCRYPTOCOMPAT_POLL_H */
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