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/*
* Public domain
*
* poll(2) emulation for Windows
*
* This emulates just-enough poll functionality on Windows to work in the
* context of the openssl(1) program. This is not a replacement for
* POSIX.1-2001 poll(2).
*
* Dongsheng Song <dongsheng.song@gmail.com>
* Brent Cook <bcook@openbsd.org>
*/
#ifndef LIBCRYPTOCOMPAT_POLL_H
#define LIBCRYPTOCOMPAT_POLL_H
#ifndef _WIN32
#include_next <poll.h>
#else
#include <winsock2.h>
/* Type used for the number of file descriptors. */
typedef unsigned long int nfds_t;
#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0600)
/* Data structure describing a polling request. */
struct pollfd {
int fd; /* file descriptor */
short events; /* requested events */
short revents; /* returned events */
};
/* Event types that can be polled */
#define POLLIN 0x001 /* There is data to read. */
#define POLLPRI 0x002 /* There is urgent data to read. */
#define POLLOUT 0x004 /* Writing now will not block. */
# define POLLRDNORM 0x040 /* Normal data may be read. */
# define POLLRDBAND 0x080 /* Priority data may be read. */
# define POLLWRNORM 0x100 /* Writing now will not block. */
# define POLLWRBAND 0x200 /* Priority data may be written. */
/* Event types always implicitly polled. */
#define POLLERR 0x008 /* Error condition. */
#define POLLHUP 0x010 /* Hung up. */
#define POLLNVAL 0x020 /* Invalid polling request. */
#endif
#ifdef __cplusplus
extern "C" {
#endif
int poll(struct pollfd *pfds, nfds_t nfds, int timeout);
#ifdef __cplusplus
}
#endif
#endif /* HAVE_POLL */
#endif /* LIBCRYPTOCOMPAT_POLL_H */
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