mirror of
https://github.com/matrix-construct/construct
synced 2024-10-30 18:39:02 +01:00
98 lines
3.8 KiB
C++
98 lines
3.8 KiB
C++
// 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_DB_DATABASE_ENV_WRITABLE_FILE_H
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// This file is not part of the standard include stack because it requires
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// RocksDB symbols which we cannot forward declare. It is used internally
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// and does not need to be included by general users of IRCd.
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struct ircd::db::database::env::writable_file
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:rocksdb::WritableFile
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{
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using Status = rocksdb::Status;
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using Slice = rocksdb::Slice;
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using IOPriority = rocksdb::Env::IOPriority;
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using WriteLifeTimeHint = rocksdb::Env::WriteLifeTimeHint;
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database &d;
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ctx::mutex mutex;
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rocksdb::EnvOptions env_opts;
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fs::fd::opts opts;
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IOPriority prio {IO_LOW};
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int8_t prio_val {0};
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bool nodelay {false};
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WriteLifeTimeHint hint {WriteLifeTimeHint::WLTH_NOT_SET};
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fs::fd fd;
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size_t preallocation_block_size {0};
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ssize_t preallocation_last_block {-1};
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bool IsSyncThreadSafe() const noexcept override;
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size_t GetUniqueId(char* id, size_t max_size) const noexcept override;
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IOPriority GetIOPriority() noexcept override;
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void SetIOPriority(IOPriority pri) noexcept override;
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WriteLifeTimeHint GetWriteLifeTimeHint() noexcept override;
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void SetWriteLifeTimeHint(WriteLifeTimeHint hint) noexcept override;
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uint64_t GetFileSize() noexcept override;
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void SetPreallocationBlockSize(size_t size) noexcept override;
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void GetPreallocationStatus(size_t* block_size, size_t* last_allocated_block) noexcept override;
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void _allocate(const size_t &offset, const size_t &length);
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void PrepareWrite(size_t offset, size_t len) noexcept override;
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Status Allocate(uint64_t offset, uint64_t len) noexcept override;
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Status PositionedAppend(const Slice& data, uint64_t offset) noexcept override;
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Status Append(const Slice& data) noexcept override;
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Status InvalidateCache(size_t offset, size_t length) noexcept override;
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Status Truncate(uint64_t size) noexcept override;
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Status RangeSync(uint64_t offset, uint64_t nbytes) noexcept override;
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Status Fsync() noexcept override;
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Status Sync() noexcept override;
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Status Flush() noexcept override;
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Status Close() noexcept override;
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writable_file(database *const &d, const std::string &name, const EnvOptions &, const bool &trunc);
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writable_file(const writable_file &) = delete;
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writable_file(writable_file &&) = delete;
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~writable_file() noexcept;
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};
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struct ircd::db::database::env::writable_file_direct final
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:writable_file
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{
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size_t alignment {0};
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size_t logical_offset {0};
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unique_buffer<mutable_buffer> buffer;
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bool aligned(const size_t &) const;
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bool aligned(const void *const &) const;
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bool aligned(const const_buffer &) const;
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size_t align(const size_t &) const;
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size_t remain(const size_t &) const;
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size_t blocks(const size_t &) const;
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size_t buffer_remain() const;
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size_t buffer_consumed() const;
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const_buffer _write__aligned(const const_buffer &, const uint64_t &offset);
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const_buffer _write_aligned(const const_buffer &, const uint64_t &offset);
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const_buffer write_aligned(const const_buffer &);
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const_buffer write_unaligned_off(const const_buffer &);
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const_buffer write_unaligned_buf(const const_buffer &);
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const_buffer write(const const_buffer &);
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uint64_t GetFileSize() noexcept override;
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Status PositionedAppend(const Slice& data, uint64_t offset) noexcept override;
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Status Append(const Slice& data) noexcept override;
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Status Truncate(uint64_t size) noexcept override;
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Status Close() noexcept override;
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writable_file_direct(database *const &d, const std::string &name, const EnvOptions &, const bool &trunc);
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};
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