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io_setup

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io_setup - ÈóƱ´ü I/O ¥³¥ó¥Æ¥­¥¹¥È¤òºîÀ®¤¹¤ë

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#include <libaio.h>



int io_setup(unsigned nr_events, aio_context_t *ctxp);

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io_setup() ¤Ï¡¢¾¯¤Ê¤¯¤È¤â nr_events ¸Ä¤Î¥¤¥Ù¥ó¥È¤ò¼õ¿®²Äǽ¤Ê ÈóƱ´ü I/O (AIO) ¥³¥ó¥Æ¥­¥¹¥È¤ÎºîÀ®¤ò¹Ô¤¦¡£ ctxp ¤Ï¡¢¤¹¤Ç¤Ë¸ºß¤¹¤ë AIO ¥³¥ó¥Æ¥­¥¹¥È¤ò»Ø¤·¤Æ¤¤¤Æ¤Ï¤Ê¤é¤º¡¢ io_setup() ¤Î¸Æ¤Ó½Ð¤·¤ÎÁ°¤Ë 0 ¤Ë½é´ü²½¤µ¤ì¤Æ¤¤¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£ AIO ¥³¥ó¥Æ¥­¥¹¥È¤ÎºîÀ®¤ËÀ®¸ù¤¹¤ë¤È¡¢*ctxp ¤ËºîÀ®¤µ¤ì¤¿ AIO ¥³¥ó¥Æ¥­¥¹¥È¤Ø¤Î¥Ý¥¤¥ó¥¿¤¬¥»¥Ã¥È¤µ¤ì¤ë¡£

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EINVAL

ctxp ¤¬½é´ü²½¤µ¤ì¤Æ¤¤¤Ê¤¤¤«¡¢»ØÄꤵ¤ì¤¿ nr_events ¤¬ ÆâÉô¤ÎÀ©¸ÂÃͤò±Û¤¨¤Æ¤¤¤ë¡£¤Þ¤¿¡¢ nr_events ¤Ï 0 ¤è¤êÂ礭¤¤ÃÍ¤Ë ÀßÄꤹ¤Ù¤­¤Ç¤¢¤ë¡£

EFAULT

ctxp ¤Ë̵¸ú¤Ê¥Ý¥¤¥ó¥¿¤¬»ØÄꤵ¤ì¤Æ¤¤¤ë¡£

ENOMEM

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EAGAIN

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ENOSYS

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io_destroy(2), io_getevents(2), io_submit(2), io_cancel(2)