49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
#ifndef _POLL_MSW_H_
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#define _POLL_MSW_H_
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#include <hak.h>
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#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0600)
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/* Event types that can be polled for. These bits may be set in `events'
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to indicate the interesting event types; they will appear in `revents'
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to indicate the status of the file descriptor. */
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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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/* Event types always implicitly polled for. These bits need not be set in
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`events', but they will appear in `revents' to indicate the status of
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the file descriptor. */
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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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/* Data structure describing a polling request. */
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struct pollfd
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{
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int fd; /* File descriptor to poll. */
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short int events; /* Types of events poller cares about. */
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short int revents; /* Types of events that actually occurred. */
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};
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/* Poll the file descriptors described by the NFDS structures starting at
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FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for
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an event to occur; if TIMEOUT is -1, block until an event occurs.
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Returns the number of file descriptors with events, zero if timed out,
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or -1 for errors. */
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#endif
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typedef unsigned long nfds_t;
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#if defined(__cplusplus)
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extern "C" {
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#endif
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int poll (struct pollfd *pfd, nfds_t nfd, int timeout);
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#if defined(__cplusplus)
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}
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#endif
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#endif |