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aio_cancel(3)
NAME
  aio_cancel - Cancels one or more asynchronous I/O requests pending against
  the specified file descriptor (P1003.1b)

SYNOPSIS
  #include <aio.h>

  int aio_cancel (
  int fildes,
  struct aiocb *aiocbp);

LIBRARY
  Asynchronous I/O Library (libaio, libaio_raw)

PARAMETERS
  fildes
      The file descriptor against which outstanding asynchronous I/O
      operations are canceled.

  *aiocbp
      A pointer to the address of the aiocb structure for a particular
      request to be canceled. If the aiocbp argument is NULL, all queued
      outstanding asynchronous I/O requests against the file descriptor are
      canceled.

DESCRIPTION
  The aio_cancel function cancels asynchronous I/O requests. Normal signal
  delivery occurs for asynchronous I/O operations that are successfully
  canceled. If a request cannot be canceled, then the normal asynchronous
  completion process takes place for those requests when they are completed.

RETURN VALUES
  On a successful call to the aio_cancel function, the requested operation is
  canceled and AIO_CANCELED is returned. If at least one of the requested
  operations is not canceled because it is in progress, AIO_NOTCANCELED is
  returned. If all the operations completed prior to the cancel request,
  AIO_ALLDONE is returned.

  On an unsuccessful call, a value of -1 is returned and errno is set to
  indicate that an error occurred. Note that the value of -1 is returned only
  if the call itself failed.

ERRORS
  The aio_cancel function fails under the following conditions:

  [EBADF]
      The fildes argument is not a valid file descriptor.

SEE ALSO
  Functions: aio_group_completion_np(3), aio_read(3), aio_results_np(3),
  aio_write(3), aio_suspend(3)

  Guide to Realtime Programming

Index for Section 3

Alphabetical listing for A

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