mirror of
https://github.com/matrix-construct/construct
synced 2024-06-02 10:08:56 +02:00
32 lines
1.1 KiB
C++
32 lines
1.1 KiB
C++
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_FS_IOV_H
|
|
|
|
extern "C"
|
|
{
|
|
struct iovec;
|
|
};
|
|
|
|
namespace ircd::fs
|
|
{
|
|
// utility; count the total bytes of an iov.
|
|
size_t bytes(const vector_view<const struct ::iovec> &);
|
|
|
|
// Transforms our buffers to struct iovec ones. This is done using an
|
|
// internal thread_local array of IOV_MAX. The returned view is of that
|
|
// array. We get away with using a single buffer because the synchronous
|
|
// readv()/writev() calls block the thread and for AIO the iov is copied out
|
|
// of userspace on io_submit().
|
|
vector_view<const struct ::iovec> make_iov(const vector_view<const const_buffer> &);
|
|
vector_view<const struct ::iovec> make_iov(const vector_view<const mutable_buffer> &);
|
|
}
|