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   io_destroy    ( 2 )

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Имя (Name)

io_destroy - destroy an asynchronous I/O context

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Синопсис (Synopsis)

#include <linux/aio_abi.h>    /* Definition of aio_context_t */
       #include <sys/syscall.h>      /* Definition of SYS_* constants */
       #include <unistd.h>

       int syscall(SYS_io_destroy, aio_context_t ctx_id);

       Note: glibc provides no wrapper for io_destroy(), necessitating
       the use of syscall(2).

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Описание (Description)

Note: this page describes the raw Linux system call interface.
       The wrapper function provided by libaio uses a different type for
       the ctx_id argument.  See NOTES.

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

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Возвращаемое значение (Return value)

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

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Ошибки (Error)

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.

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Версии (Versions)

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

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Стандарты (Conforming to)

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

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Примечание (Note)

You probably want to use the io_destroy() wrapper function
       provided by libaio.

       Note that the libaio wrapper function uses a different type
       (io_context_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.

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Смотри также (See also)

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

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