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POLL
Section: Linux Programmer's Manual (2)Updated: 7 December 1997
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#include <sys/poll.h>int poll(struct pollfd *ufds, unsigned int nfds, int timeout);
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struct pollfd {
int fd; /* file descriptor */
short events; /* requested events */
short revents; /* returned events */
};
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timeout
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revents
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POLLERR,
POLLHUP,
POLLNVAL
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events
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timeout
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°Ê²¼¤Î¥Þ¥¹¥¯¤È¤·¤Æ»ÈÍѲÄǽ¤Ê¥Ó¥Ã¥È¤Ï <sys/poll.h> ¤ËÄêµÁ¤µ¤ì¤Æ¤¤¤ë:
#define POLLIN 0x0001 /* There is data to read */
#define POLLPRI 0x0002 /* There is urgent data to read */
#define POLLOUT 0x0004 /* Writing now will not block */
#define POLLERR 0x0008 /* Error condition */
#define POLLHUP 0x0010 /* Hung up */
#define POLLNVAL 0x0020 /* Invalid request: fd not open */
<asm/poll.h> ¤Ë¤Ï
POLLRDNORM,
POLLRDBAND,
POLLWRNORM,
POLLWRBAND
POLLMSG
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- EFAULT
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- EINTR
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