socket_poll.h

#pragma once

#ifndef _WIN32
# include <sys/poll.h>
#else
# if defined(NTDDI_VERSION) && ( !defined(NTDDI_VISTA) || ( NTDDI_VERSION < NTDDI_VISTA ) )
    // These are only defined in winsock2.h on newer windows but we need them everywhere.
#   define POLLRDNORM  0x0100
#   define POLLRDBAND  0x0200
#   define POLLIN      (POLLRDNORM | POLLRDBAND)
#   define POLLPRI     0x0400

#   define POLLWRNORM  0x0010
#   define POLLOUT     (POLLWRNORM)
#   define POLLWRBAND  0x0020

#   define POLLERR     0x0001
#   define POLLHUP     0x0002
#   define POLLNVAL    0x0004

    struct pollfd {
        SOCKET fd;
        SHORT events;
        SHORT revents;
    };
# endif // old windows
#endif // ndef _WIN32

namespace mongo {
    bool isPollSupported();
    int socketPoll(pollfd* fdarray, unsigned long nfds, int timeout);
}