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authorPieter Wuille <sipa@ulyssis.org>2013-08-20 14:03:29 +0200
committerPieter Wuille <sipa@ulyssis.org>2013-08-20 14:03:29 +0200
commit5c739c574fdc9197b317221305e14e7701a452b3 (patch)
treea033f705990fffccaf8b9d2d58d045f8f9c50a5d /src/leveldb/db/db_impl.h
parent20b611770f6900209f125f7cd4bf45fdb1fe4370 (diff)
Remove inline LevelDB to prepare for git-subtree version
Diffstat (limited to 'src/leveldb/db/db_impl.h')
-rw-r--r--src/leveldb/db/db_impl.h202
1 files changed, 0 insertions, 202 deletions
diff --git a/src/leveldb/db/db_impl.h b/src/leveldb/db/db_impl.h
deleted file mode 100644
index bd29dd8055..0000000000
--- a/src/leveldb/db/db_impl.h
+++ /dev/null
@@ -1,202 +0,0 @@
-// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file. See the AUTHORS file for names of contributors.
-
-#ifndef STORAGE_LEVELDB_DB_DB_IMPL_H_
-#define STORAGE_LEVELDB_DB_DB_IMPL_H_
-
-#include <deque>
-#include <set>
-#include "db/dbformat.h"
-#include "db/log_writer.h"
-#include "db/snapshot.h"
-#include "leveldb/db.h"
-#include "leveldb/env.h"
-#include "port/port.h"
-#include "port/thread_annotations.h"
-
-namespace leveldb {
-
-class MemTable;
-class TableCache;
-class Version;
-class VersionEdit;
-class VersionSet;
-
-class DBImpl : public DB {
- public:
- DBImpl(const Options& options, const std::string& dbname);
- virtual ~DBImpl();
-
- // Implementations of the DB interface
- virtual Status Put(const WriteOptions&, const Slice& key, const Slice& value);
- virtual Status Delete(const WriteOptions&, const Slice& key);
- virtual Status Write(const WriteOptions& options, WriteBatch* updates);
- virtual Status Get(const ReadOptions& options,
- const Slice& key,
- std::string* value);
- virtual Iterator* NewIterator(const ReadOptions&);
- virtual const Snapshot* GetSnapshot();
- virtual void ReleaseSnapshot(const Snapshot* snapshot);
- virtual bool GetProperty(const Slice& property, std::string* value);
- virtual void GetApproximateSizes(const Range* range, int n, uint64_t* sizes);
- virtual void CompactRange(const Slice* begin, const Slice* end);
-
- // Extra methods (for testing) that are not in the public DB interface
-
- // Compact any files in the named level that overlap [*begin,*end]
- void TEST_CompactRange(int level, const Slice* begin, const Slice* end);
-
- // Force current memtable contents to be compacted.
- Status TEST_CompactMemTable();
-
- // Return an internal iterator over the current state of the database.
- // The keys of this iterator are internal keys (see format.h).
- // The returned iterator should be deleted when no longer needed.
- Iterator* TEST_NewInternalIterator();
-
- // Return the maximum overlapping data (in bytes) at next level for any
- // file at a level >= 1.
- int64_t TEST_MaxNextLevelOverlappingBytes();
-
- private:
- friend class DB;
- struct CompactionState;
- struct Writer;
-
- Iterator* NewInternalIterator(const ReadOptions&,
- SequenceNumber* latest_snapshot);
-
- Status NewDB();
-
- // Recover the descriptor from persistent storage. May do a significant
- // amount of work to recover recently logged updates. Any changes to
- // be made to the descriptor are added to *edit.
- Status Recover(VersionEdit* edit) EXCLUSIVE_LOCKS_REQUIRED(mutex_);
-
- void MaybeIgnoreError(Status* s) const;
-
- // Delete any unneeded files and stale in-memory entries.
- void DeleteObsoleteFiles();
-
- // Compact the in-memory write buffer to disk. Switches to a new
- // log-file/memtable and writes a new descriptor iff successful.
- Status CompactMemTable()
- EXCLUSIVE_LOCKS_REQUIRED(mutex_);
-
- Status RecoverLogFile(uint64_t log_number,
- VersionEdit* edit,
- SequenceNumber* max_sequence)
- EXCLUSIVE_LOCKS_REQUIRED(mutex_);
-
- Status WriteLevel0Table(MemTable* mem, VersionEdit* edit, Version* base)
- EXCLUSIVE_LOCKS_REQUIRED(mutex_);
-
- Status MakeRoomForWrite(bool force /* compact even if there is room? */)
- EXCLUSIVE_LOCKS_REQUIRED(mutex_);
- WriteBatch* BuildBatchGroup(Writer** last_writer);
-
- void MaybeScheduleCompaction() EXCLUSIVE_LOCKS_REQUIRED(mutex_);
- static void BGWork(void* db);
- void BackgroundCall();
- Status BackgroundCompaction() EXCLUSIVE_LOCKS_REQUIRED(mutex_);
- void CleanupCompaction(CompactionState* compact)
- EXCLUSIVE_LOCKS_REQUIRED(mutex_);
- Status DoCompactionWork(CompactionState* compact)
- EXCLUSIVE_LOCKS_REQUIRED(mutex_);
-
- Status OpenCompactionOutputFile(CompactionState* compact);
- Status FinishCompactionOutputFile(CompactionState* compact, Iterator* input);
- Status InstallCompactionResults(CompactionState* compact)
- EXCLUSIVE_LOCKS_REQUIRED(mutex_);
-
- // Constant after construction
- Env* const env_;
- const InternalKeyComparator internal_comparator_;
- const InternalFilterPolicy internal_filter_policy_;
- const Options options_; // options_.comparator == &internal_comparator_
- bool owns_info_log_;
- bool owns_cache_;
- const std::string dbname_;
-
- // table_cache_ provides its own synchronization
- TableCache* table_cache_;
-
- // Lock over the persistent DB state. Non-NULL iff successfully acquired.
- FileLock* db_lock_;
-
- // State below is protected by mutex_
- port::Mutex mutex_;
- port::AtomicPointer shutting_down_;
- port::CondVar bg_cv_; // Signalled when background work finishes
- MemTable* mem_;
- MemTable* imm_; // Memtable being compacted
- port::AtomicPointer has_imm_; // So bg thread can detect non-NULL imm_
- WritableFile* logfile_;
- uint64_t logfile_number_;
- log::Writer* log_;
-
- // Queue of writers.
- std::deque<Writer*> writers_;
- WriteBatch* tmp_batch_;
-
- SnapshotList snapshots_;
-
- // Set of table files to protect from deletion because they are
- // part of ongoing compactions.
- std::set<uint64_t> pending_outputs_;
-
- // Has a background compaction been scheduled or is running?
- bool bg_compaction_scheduled_;
-
- // Information for a manual compaction
- struct ManualCompaction {
- int level;
- bool done;
- const InternalKey* begin; // NULL means beginning of key range
- const InternalKey* end; // NULL means end of key range
- InternalKey tmp_storage; // Used to keep track of compaction progress
- };
- ManualCompaction* manual_compaction_;
-
- VersionSet* versions_;
-
- // Have we encountered a background error in paranoid mode?
- Status bg_error_;
-
- // Per level compaction stats. stats_[level] stores the stats for
- // compactions that produced data for the specified "level".
- struct CompactionStats {
- int64_t micros;
- int64_t bytes_read;
- int64_t bytes_written;
-
- CompactionStats() : micros(0), bytes_read(0), bytes_written(0) { }
-
- void Add(const CompactionStats& c) {
- this->micros += c.micros;
- this->bytes_read += c.bytes_read;
- this->bytes_written += c.bytes_written;
- }
- };
- CompactionStats stats_[config::kNumLevels];
-
- // No copying allowed
- DBImpl(const DBImpl&);
- void operator=(const DBImpl&);
-
- const Comparator* user_comparator() const {
- return internal_comparator_.user_comparator();
- }
-};
-
-// Sanitize db options. The caller should delete result.info_log if
-// it is not equal to src.info_log.
-extern Options SanitizeOptions(const std::string& db,
- const InternalKeyComparator* icmp,
- const InternalFilterPolicy* ipolicy,
- const Options& src);
-
-} // namespace leveldb
-
-#endif // STORAGE_LEVELDB_DB_DB_IMPL_H_