295 lines
11 KiB
C++
295 lines
11 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) 2016-2019 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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/// Internal environment hookup.
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///
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struct [[gnu::visibility("hidden")]]
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ircd::db::database::env final
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:rocksdb::Env
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{
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struct writable_file;
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struct writable_file_direct;
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struct sequential_file;
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struct random_access_file;
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struct random_rw_file;
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struct directory;
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struct file_lock;
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struct state;
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using Status = rocksdb::Status;
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using EnvOptions = rocksdb::EnvOptions;
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using Directory = rocksdb::Directory;
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using FileLock = rocksdb::FileLock;
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using WritableFile = rocksdb::WritableFile;
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using SequentialFile = rocksdb::SequentialFile;
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using RandomAccessFile = rocksdb::RandomAccessFile;
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using RandomRWFile = rocksdb::RandomRWFile;
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using Logger = rocksdb::Logger;
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using ThreadStatus = rocksdb::ThreadStatus;
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using ThreadStatusUpdater = rocksdb::ThreadStatusUpdater;
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static int8_t make_nice(const IOPriority &);
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static int8_t make_nice(const Priority &);
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static ircd::log::log log;
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database &d;
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Env &defaults
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{
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*rocksdb::Env::Default()
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};
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std::unique_ptr<struct state> st;
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Status NewSequentialFile(const std::string& f, std::unique_ptr<SequentialFile>* r, const EnvOptions& options) noexcept override;
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Status NewRandomAccessFile(const std::string& f, std::unique_ptr<RandomAccessFile>* r, const EnvOptions& options) noexcept override;
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Status NewWritableFile(const std::string& f, std::unique_ptr<WritableFile>* r, const EnvOptions& options) noexcept override;
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Status ReopenWritableFile(const std::string& fname, std::unique_ptr<WritableFile>* result, const EnvOptions& options) noexcept override;
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Status ReuseWritableFile(const std::string& fname, const std::string& old_fname, std::unique_ptr<WritableFile>* r, const EnvOptions& options) noexcept override;
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Status NewRandomRWFile(const std::string& fname, std::unique_ptr<RandomRWFile>* result, const EnvOptions& options) noexcept override;
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Status NewDirectory(const std::string& name, std::unique_ptr<Directory>* result) noexcept override;
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Status FileExists(const std::string& f) noexcept override;
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Status GetChildren(const std::string& dir, std::vector<std::string>* r) noexcept override;
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Status GetChildrenFileAttributes(const std::string& dir, std::vector<FileAttributes>* result) noexcept override;
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Status DeleteFile(const std::string& f) noexcept override;
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Status CreateDir(const std::string& d) noexcept override;
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Status CreateDirIfMissing(const std::string& d) noexcept override;
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Status DeleteDir(const std::string& d) noexcept override;
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Status GetFileSize(const std::string& f, uint64_t* s) noexcept override;
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Status GetFileModificationTime(const std::string& fname, uint64_t* file_mtime) noexcept override;
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Status RenameFile(const std::string& s, const std::string& t) noexcept override;
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Status LinkFile(const std::string& s, const std::string& t) noexcept override;
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Status LockFile(const std::string& f, FileLock** l) noexcept override;
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Status UnlockFile(FileLock* l) noexcept override;
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void Schedule(void (*f)(void* arg), void* a, Priority pri, void* tag = nullptr, void (*u)(void* arg) = 0) noexcept override;
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int UnSchedule(void* tag, Priority pri) noexcept override;
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void StartThread(void (*f)(void*), void* a) noexcept override;
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void WaitForJoin() noexcept override;
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unsigned int GetThreadPoolQueueLen(Priority pri = LOW) const noexcept override;
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Status GetTestDirectory(std::string* path) noexcept override;
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Status NewLogger(const std::string& fname, std::shared_ptr<Logger>* result) noexcept override;
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uint64_t NowNanos() noexcept override;
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uint64_t NowMicros() noexcept override;
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void SleepForMicroseconds(int micros) noexcept override;
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Status GetHostName(char* name, uint64_t len) noexcept override;
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Status GetCurrentTime(int64_t* unix_time) noexcept override;
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Status GetAbsolutePath(const std::string& db_path, std::string* output_path) noexcept override;
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void SetBackgroundThreads(int num, Priority pri) noexcept override;
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void IncBackgroundThreadsIfNeeded(int num, Priority pri) noexcept override;
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void LowerThreadPoolIOPriority(Priority pool = LOW) noexcept override;
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std::string TimeToString(uint64_t time) noexcept override;
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Status GetThreadList(std::vector<ThreadStatus>* thread_list) noexcept override;
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ThreadStatusUpdater* GetThreadStatusUpdater() const noexcept override;
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uint64_t GetThreadID() const noexcept override;
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int GetBackgroundThreads(Priority pri) noexcept override;
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env(database *const &d);
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~env() noexcept;
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};
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struct [[gnu::visibility("hidden")]]
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ircd::db::database::env::directory final
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:rocksdb::Directory
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{
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using Status = rocksdb::Status;
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database &d;
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std::unique_ptr<Directory> defaults;
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Status Fsync() noexcept override;
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directory(database *const &d, const std::string &name, std::unique_ptr<Directory> defaults);
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~directory() noexcept;
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};
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struct [[gnu::visibility("hidden")]]
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ircd::db::database::env::file_lock final
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:rocksdb::FileLock
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{
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database &d;
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file_lock(database *const &d);
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~file_lock() noexcept;
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};
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struct [[gnu::visibility("hidden")]]
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ircd::db::database::env::random_access_file final
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:rocksdb::RandomAccessFile
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{
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using Status = rocksdb::Status;
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using Slice = rocksdb::Slice;
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static const fs::fd::opts default_opts;
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database &d;
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fs::fd::opts opts;
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fs::fd fd;
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size_t _buffer_align;
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int8_t ionice {0};
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bool aio;
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bool use_direct_io() const noexcept override;
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size_t GetRequiredBufferAlignment() const noexcept override;
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size_t GetUniqueId(char* id, size_t max_size) const noexcept override;
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void Hint(AccessPattern pattern) noexcept override;
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Status InvalidateCache(size_t offset, size_t length) noexcept override;
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Status Read(uint64_t offset, size_t n, Slice *result, char *scratch) const noexcept override;
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#ifdef IRCD_DB_HAS_ENV_MULTIREAD
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Status MultiRead(rocksdb::ReadRequest *, size_t num) noexcept override;
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#endif
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Status Prefetch(uint64_t offset, size_t n) noexcept override;
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random_access_file(database *const &d, const std::string &name, const EnvOptions &);
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~random_access_file() noexcept;
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};
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struct [[gnu::visibility("hidden")]]
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ircd::db::database::env::random_rw_file final
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:rocksdb::RandomRWFile
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{
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using Status = rocksdb::Status;
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using Slice = rocksdb::Slice;
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static const fs::fd::opts default_opts;
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database &d;
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fs::fd::opts opts;
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fs::fd fd;
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size_t _buffer_align;
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int8_t ionice {0};
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bool nodelay {false};
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bool aio;
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bool use_direct_io() const noexcept override;
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size_t GetRequiredBufferAlignment() const noexcept override;
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Status Read(uint64_t offset, size_t n, Slice *result, char *scratch) const noexcept override;
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Status Write(uint64_t offset, const Slice &data) noexcept override;
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Status Flush() noexcept override;
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Status Sync() noexcept override;
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Status Fsync() noexcept override;
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Status Close() noexcept override;
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random_rw_file(database *const &d, const std::string &name, const EnvOptions &);
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~random_rw_file() noexcept;
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};
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struct [[gnu::visibility("hidden")]]
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ircd::db::database::env::sequential_file final
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:rocksdb::SequentialFile
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{
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using Status = rocksdb::Status;
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using Slice = rocksdb::Slice;
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static const fs::fd::opts default_opts;
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database &d;
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ctx::mutex mutex;
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fs::fd::opts opts;
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fs::fd fd;
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size_t _buffer_align;
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off_t offset {0};
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int8_t ionice {0};
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bool aio;
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bool use_direct_io() const noexcept override;
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size_t GetRequiredBufferAlignment() const noexcept override;
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Status InvalidateCache(size_t offset, size_t length) noexcept override;
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Status PositionedRead(uint64_t offset, size_t n, Slice *result, char *scratch) noexcept override;
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Status Read(size_t n, Slice *result, char *scratch) noexcept override;
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Status Skip(uint64_t size) noexcept override;
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sequential_file(database *const &d, const std::string &name, const EnvOptions &);
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~sequential_file() noexcept;
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};
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struct [[gnu::visibility("hidden")]]
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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 ionice {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, const bool &ate);
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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 [[gnu::visibility("hidden")]]
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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, const bool &ate);
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};
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