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https://github.com/matrix-construct/construct
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48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
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// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_FS_SYNC_OPTS_H
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namespace ircd::fs
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{
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struct opts extern const opts_default;
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}
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/// Options common to all operations
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struct ircd::fs::opts
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{
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/// Offset in the file.
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off_t offset {0};
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/// Request priority. Lower value takes priority over higher.
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int8_t priority {0};
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/// Submits the I/O request immediately rather than allowing IRCd to
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/// queue requests for a few iterations of the ircd::ios event loop.
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/// (only relevant to aio).
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bool nodelay {false};
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/// Determines whether this operation is conducted via AIO. If not, a
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/// direct syscall is made. Using AIO will only block one ircd::ctx while
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/// a direct syscall will block the thread (all contexts). If AIO is not
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/// available or not enabled, or doesn't support this operation, setting
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/// this has no effect.
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bool aio {true};
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opts(const off_t &);
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opts() = default;
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};
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inline
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ircd::fs::opts::opts(const off_t &offset)
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:offset{offset}
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{}
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