mirror of
https://github.com/matrix-construct/construct
synced 2024-11-04 21:08:57 +01:00
47 lines
1.4 KiB
C++
47 lines
1.4 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_SYNC_OPTS_H
|
|
|
|
namespace ircd::fs
|
|
{
|
|
struct opts extern const opts_default;
|
|
}
|
|
|
|
/// Options common to all operations
|
|
struct ircd::fs::opts
|
|
{
|
|
/// Offset in the file.
|
|
off_t offset {0};
|
|
|
|
/// Request priority. Lower value takes priority over higher.
|
|
int8_t priority {0};
|
|
|
|
/// Submits the I/O request immediately rather than allowing IRCd to
|
|
/// queue requests for a few iterations of the ircd::ios event loop.
|
|
/// (only relevant to aio).
|
|
bool nodelay {false};
|
|
|
|
/// Determines whether this operation is conducted via AIO. If not, a
|
|
/// direct syscall is made. Using AIO will only block one ircd::ctx while
|
|
/// a direct syscall will block the thread (all contexts). If AIO is not
|
|
/// available or not enabled, or doesn't support this operation, setting
|
|
/// this has no effect.
|
|
bool aio {true};
|
|
|
|
opts(const off_t &);
|
|
opts() = default;
|
|
};
|
|
|
|
inline
|
|
ircd::fs::opts::opts(const off_t &offset)
|
|
:offset{offset}
|
|
{}
|