FreeBSD Manual Pages
AIO_SUSPEND(2) System Calls Manual AIO_SUSPEND(2) NAME aio_suspend -- suspend until asynchronous I/O operations or timeout com- plete (REALTIME) LIBRARY Standard C Library (libc, -lc) SYNOPSIS #include <aio.h> int aio_suspend(const struct aiocb *const iocbs[], int niocb, const struct timespec *timeout); DESCRIPTION The aio_suspend() system call suspends the calling process until at least one of the specified asynchronous I/O requests have completed, a signal is delivered, or the timeout has passed. The iocbs argument is an array of niocb pointers to asynchronous I/O re- quests. Array members containing null pointers will be silently ignored. If timeout is not a null pointer, it specifies a maximum interval to sus- pend. If timeout is a null pointer, the suspend blocks indefinitely. To effect a poll, the timeout should point to a zero-value timespec structure. RETURN VALUES If one or more of the specified asynchronous I/O requests have completed, aio_suspend() returns 0. Otherwise it returns -1 and sets errno to indi- cate the error, as enumerated below. ERRORS The aio_suspend() system call will fail if: [EAGAIN] the timeout expired before any I/O requests completed. [EINVAL] The iocbs argument contains more asynchronous I/O re- quests than the vfs.aio.max_aio_queue_per_proc sysctl(8) variable, or at least one of the requests is not valid. [EINTR] the suspend was interrupted by a signal. SEE ALSO aio_cancel(2), aio_error(2), aio_return(2), aio_waitcomplete(2), aio_write(2), aio(4) STANDARDS The aio_suspend() system call is expected to conform to the IEEE Std 1003.1 ("POSIX.1") standard. HISTORY The aio_suspend() system call first appeared in FreeBSD 3.0. AUTHORS This manual page was written by Wes Peters <wes@softweyr.com>. FreeBSD ports 15.quarterly October 23, 2017 AIO_SUSPEND(2)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS | HISTORY | AUTHORS
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=aio_suspend&sektion=2&manpath=FreeBSD+15.1-RELEASE+and+Ports.quarterly>