io_destroy - destroy an asynchronous I/O context

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 VERSIONS. 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.

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

Linux 2.5.

Standard C library (libc, -lc)

io_destroy - destroy an asynchronous I/O context

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

io_cancel(2), io_getevents(2), io_setup(2), io_submit(2), aio(7) Linux man-pages 6.9.1 2024-05-02 io_destroy(2)

Linux.

#include<linux/aio_abi.h> /* Definition of aio_context_t */ #include<sys/syscall.h> /* Definition of SYS_* constants */ #include<unistd.h>intsyscall(SYS_io_destroy,aio_context_tctx_id);Note: glibc provides no wrapper for io_destroy(), necessitating the use of syscall(2).

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.