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man:io_destroy

IO_DESTROY(2) Linux Programmer's Manual IO_DESTROY(2)

NAME

     io_destroy - destroy an asynchronous I/O context

SYNOPSIS

     #include <linux/aio_abi.h>          /* Defines needed types */
     int io_destroy(aio_context_t ctx_id);
     Note: There is no glibc wrapper for this system call; see NOTES.

DESCRIPTION

     The  io_destroy()  system  call  will attempt to cancel all outstanding
     asynchronous I/O operations against ctx_id, will block on  the  comple-
     tion of all operations that could not be canceled, and will destroy the
     ctx_id.

RETURN VALUE

     On success, io_destroy() returns 0.  For the failure return, see NOTES.

ERRORS

     EFAULT The context pointed to is invalid.
     EINVAL The AIO context specified by ctx_id is invalid.
     ENOSYS io_destroy() is not implemented on this architecture.

VERSIONS

     The asynchronous I/O system calls first appeared in Linux 2.5.

CONFORMING TO

     io_destroy()  is Linux-specific and should not be used in programs that
     are intended to be portable.

NOTES

     Glibc does not provide a wrapper function for this  system  call.   You
     could  invoke  it  using syscall(2).  But instead, you probably want to
     use the io_destroy() wrapper function provided by libaio.
     Note that the libaio wrapper function uses a  different  type  (io_con-
     text_t)  for  the  ctx_id  argument.  Note also that the libaio wrapper
     does not follow the usual C library conventions for indicating  errors:
     on  error it returns a negated error number (the negative of one of the
     values  listed  in  ERRORS).   If  the  system  call  is  invoked   via
     syscall(2),  then  the  return  value follows the usual conventions for
     indicating an error: -1, with errno set  to  a  (positive)  value  that
     indicates the error.

SEE ALSO

     io_cancel(2), io_getevents(2), io_setup(2), io_submit(2), aio(7)

COLOPHON

     This  page  is  part of release 4.16 of the Linux man-pages project.  A
     description of the project, information about reporting bugs,  and  the
     latest     version     of     this    page,    can    be    found    at
     https://www.kernel.org/doc/man-pages/.

Linux 2017-09-15 IO_DESTROY(2)

/data/webs/external/dokuwiki/data/pages/man/io_destroy.txt · Last modified: 2019/05/17 09:47 by 127.0.0.1

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