aio_suspend man page on SmartOS

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       aio_suspend - wait for asynchronous I/O request

       #include <aio.h>

       int aio_suspend(const struct aiocb * const list[], int nent,
	    const struct timespec *timeout);

       The  aio_suspend() function suspends the calling thread	until at least
       one of the asynchronous I/O operations referenced by the list  argument
       has  completed,	until a signal interrupts the function, or, if timeout
       is not NULL, until the time interval specified by timeout  has  passed.
       If  any	of  the	 aiocb	structures in the list correspond to completed
       asynchronous I/O operations (that is, the error status for  the	opera‐
       tion is not equal to EINPROGRESS) at the time of the call, the function
       returns without suspending the calling thread. The list argument is  an
       array of pointers to asynchronous I/O control blocks. The nent argument
       indicates the number of	elements  in  the  array  and  is  limited  to
       _AIO_LISTIO_MAX	= 4096. Each aiocb structure pointed to will have been
       used in	initiating  an	asynchronous  I/O  request  via	 aio_read(3C),
       aio_write(3C), or lio_listio(3C). This array may contain null pointers,
       which are ignored.  If this array contains pointers that refer to aiocb
       structures  that have not been used in submitting asynchronous I/O, the
       effect is undefined.

       If the time interval indicated in the timespec structure pointed to  by
       timeout	passes before any of the I/O operations referenced by list are
       completed, then aio_suspend() returns with an error.

       If aio_suspend() returns after one or more asynchronous I/O  operations
       have  completed, it returns 0. Otherwise, it returns −1, and sets errno
       to indicate the error.

       The application may determine which asynchronous I/O completed by scan‐
       ning  the  associated  error  and return status using aio_error(3C) and
       aio_return(3C), respectively.

       The aio_suspend() function will fail if:

		  No asynchronous I/O indicated in the list referenced by list
		  completed in the time interval indicated by timeout.

		  A  signal interrupted the aio_suspend() function. Since each
		  asynchronous I/O operation might provoke a  signal  when  it
		  completes, this error return can be caused by the completion
		  of one or more of the very I/O operations being awaited.

		  The nent argument is less than or equal to 0 or greater than
		  _AIO_LISTIO_MAX,  or	the  timespec  structure pointed to by
		  timeout is not properly set because tv_sec is less than 0 or
		  tv_nsec is either less than 0 or greater than 10^9.

		  There is currently not enough available memory; the applica‐
		  tion can try again later.

		  The aio_suspend() function is not supported by the system.

       The aio_suspend() function has a transitional interface for 64-bit file
       offsets.	 See lf64(5).

       See attributes(5) for descriptions of the following attributes:

       │Interface Stability │ Committed		│
       │MT-Level	    │ Async-Signal-Safe │
       │Standard	    │ See standards(5). │

       aio.h(3HEAD),	  aio_fsync(3C),     aio_read(3C),     aio_return(3C),
       aio_write(3C), lio_listio(3C), signal.h(3HEAD), attributes(5), lf64(5),

       Solaris 2.6 was the first release to support the Asynchronous Input and
       Output option. Prior to this release, this function always returned  −1
       and set errno to ENOSYS.

				 Dec 18, 2008		       AIO_SUSPEND(3C)

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