| LIO_LISTIO(3) | Library Functions Manual | LIO_LISTIO(3) | 
lio_listio —
#include <aio.h>
int
  
  lio_listio(int mode,
    struct aiocb * const list[], int
    nent, struct sigevent *sig);
lio_listio() function initiates a list of I/O
  requests with a single function call. The list argument
  is an array of pointers to aiocb structures describing
  each operation to perform, with nent elements.
  NULL elements are ignored.
The aio_lio_opcode field of each aiocb specifies the operation to be performed. The following operations are supported:
LIO_READLIO_NOPLIO_WRITEIf the mode argument is
    LIO_WAIT, lio_listio() does
    not return until all the requested operations have been completed. If
    mode is LIO_NOWAIT, the
    requests are processed asynchronously, and the signal specified by
    sig is sent when all operations have completed. If
    sig is NULL, the calling
    process is not notified of I/O completion.
The order in which the requests are carried out is not specified, and there is no guarantee that they will be executed sequentially.
LIO_WAIT, the
  lio_listio() function returns 0 if the operations
  completed successfully, otherwise -1.
If mode is
    LIO_NOWAIT, the lio_listio()
    function returns 0 if the operations are successfully queued, otherwise
  -1.
lio_listio() function will fail if:
EAGAIN]AIO_MAX to be
      exceeded.EINTR]EINVAL]LIO_WAIT nor LIO_NOWAIT,
      or nent is greater than
      AIO_LISTIO_MAX.EIO]In addition, the lio_listio() function may
    fail for any of the reasons listed for
    aio_read(3) and
    aio_write(3).
If lio_listio() succeeds, or fails with an
    error code of EAGAIN, EINTR,
    or EIO, some of the requests may have been
    initiated. The caller should check the error status of each
    aiocb structure individually by calling
    aio_error(3).
lio_listio() function is expected to conform to
  IEEE Std 1003.1-2001 (“POSIX.1”).
| August 12, 2011 | NetBSD 9.3 |