39 lines
1.0 KiB
Groff
39 lines
1.0 KiB
Groff
.\" Copyright (C) 2021 Stefan Roesch <shr@fb.com>
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.\"
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.\" SPDX-License-Identifier: LGPL-2.0-or-later
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.\"
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.TH io_uring_submit_and_wait 3 "November 15, 2021" "liburing-2.1" "liburing Manual"
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.SH NAME
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io_uring_submit_and_wait \- submit requests to the submission queue and wait for completion
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.SH SYNOPSIS
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.nf
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.B #include <liburing.h>
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.PP
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.BI "int io_uring_submit_and_wait(struct io_uring *" ring ","
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.BI " unsigned " wait_nr ");"
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.fi
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.SH DESCRIPTION
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.PP
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The
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.BR io_uring_submit_and_wait (3)
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function submits the next events to the submission queue belonging to the
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.I ring
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and waits for
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.I wait_nr
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completion events.
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After the caller retrieves a submission queue entry (SQE) with
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.BR io_uring_get_sqe (3)
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and prepares the SQE, it can be submitted with
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.BR io_uring_submit_and_wait (3) .
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.SH RETURN VALUE
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On success
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.BR io_uring_submit_and_wait (3)
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returns the number of submitted submission queue entries. On failure it returns
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.BR -errno .
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.SH SEE ALSO
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.BR io_uring_get_sqe (3),
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.BR io_uring_submit (3),
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.BR io_uring_submit_and_wait_timeout (3)
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