개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

aiowait(3c)

Standard C Library Functions                                       aiowait(3C)



NAME
       aiowait - wait for completion of asynchronous I/O operation

SYNOPSIS
       #include <sys/asynch.h>
       #include <sys/time.h>

       aio_result_t *aiowait(const struct timeval *timeout);

DESCRIPTION
       The  aiowait()  function  suspends the calling process until one of its
       outstanding asynchronous I/O operations completes, providing a synchro‐
       nous method of notification.


       If  timeout  is  a non-zero pointer, it specifies a maximum interval to
       wait for the completion of an asynchronous I/O operation. If timeout is
       a  zero  pointer,  aiowait() blocks indefinitely. To effect a poll, the
       timeout parameter should be non-zero, pointing to a zero-valued timeval
       structure.


       The  timeval structure is defined in <sys/time.h> and contains the fol‐
       lowing members:

         long  tv_sec;           /* seconds */
         long  tv_usec;          /* and microseconds */


RETURN VALUES
       Upon successful completion, aiowait() returns a pointer to  the  result
       structure  used  when  the  completed  asynchronous  I/O  operation was
       requested. Upon failure, aiowait() returns −1 and sets errno  to  indi‐
       cate the error. aiowait() returns 0 if the time limit expires.

ERRORS
       The aiowait() function will fail if:

       EFAULT    The timeout argument points to an address outside the address
                 space of the requesting process. See NOTES.


       EINTR     The execution of aiowait() was interrupted by a signal.


       EINVAL    There are no outstanding asynchronous I/O requests.


       EINVAL    The tv_secs member of the timeval  structure  pointed  to  by
                 timeout is less than 0 or the tv_usecs member is greater than
                 the number of seconds in a microsecond.


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE VALUE _ MT-LevelSafe


SEE ALSO
       aiocancel(3C), aioread(3C), attributes(7)

NOTES
       The aiowait() function is the only way to dequeue an asynchronous noti‐
       fication. It can be used either inside a SIGIO signal handler or in the
       main program. One SIGIO signal can represent several queued events.


       Passing  an  illegal address as timeout will result in setting errno to
       EFAULT only if detected by the application process.



Oracle Solaris 11.4               5 Feb 2008                       aiowait(3C)