fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
126 lines
4.0 KiB
126 lines
4.0 KiB
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same directory.
|
|
//
|
|
// 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.
|
|
#pragma once
|
|
|
|
#include <atomic>
|
|
#include <deque>
|
|
#include <limits>
|
|
#include <set>
|
|
#include <utility>
|
|
#include <vector>
|
|
#include <string>
|
|
#include <functional>
|
|
|
|
#include "db/dbformat.h"
|
|
#include "db/log_writer.h"
|
|
#include "db/snapshot.h"
|
|
#include "db/column_family.h"
|
|
#include "db/version_edit.h"
|
|
#include "db/memtable_list.h"
|
|
#include "port/port.h"
|
|
#include "rocksdb/db.h"
|
|
#include "rocksdb/env.h"
|
|
#include "rocksdb/memtablerep.h"
|
|
#include "rocksdb/compaction_filter.h"
|
|
#include "rocksdb/transaction_log.h"
|
|
#include "util/autovector.h"
|
|
#include "util/stop_watch.h"
|
|
#include "util/thread_local.h"
|
|
#include "util/scoped_arena_iterator.h"
|
|
#include "db/internal_stats.h"
|
|
#include "db/write_controller.h"
|
|
#include "db/flush_scheduler.h"
|
|
#include "db/write_thread.h"
|
|
#include "db/job_context.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
class MemTable;
|
|
class TableCache;
|
|
class Version;
|
|
class VersionEdit;
|
|
class VersionSet;
|
|
class Arena;
|
|
|
|
class CompactionJob {
|
|
public:
|
|
// TODO(icanadi) make effort to reduce number of parameters here
|
|
// IMPORTANT: mutable_cf_options needs to be alive while CompactionJob is
|
|
// alive
|
|
CompactionJob(Compaction* compaction, const DBOptions& db_options,
|
|
const MutableCFOptions& mutable_cf_options,
|
|
const EnvOptions& env_options, VersionSet* versions,
|
|
std::atomic<bool>* shutting_down, LogBuffer* log_buffer,
|
|
Directory* db_directory, Statistics* stats,
|
|
SnapshotList* snapshot_list, bool is_snapshot_supported,
|
|
std::shared_ptr<Cache> table_cache,
|
|
std::function<uint64_t()> yield_callback);
|
|
|
|
~CompactionJob() { assert(compact_ == nullptr); }
|
|
|
|
// no copy/move
|
|
CompactionJob(CompactionJob&& job) = delete;
|
|
CompactionJob(const CompactionJob& job) = delete;
|
|
CompactionJob& operator=(const CompactionJob& job) = delete;
|
|
|
|
// REQUIRED: mutex held
|
|
void Prepare();
|
|
// REQUIRED mutex not held
|
|
Status Run();
|
|
// REQUIRED: mutex held
|
|
// status is the return of Run()
|
|
Status Install(Status status, port::Mutex* db_mutex);
|
|
|
|
private:
|
|
void AllocateCompactionOutputFileNumbers();
|
|
// Call compaction filter if is_compaction_v2 is not true. Then iterate
|
|
// through input and compact the kv-pairs
|
|
Status ProcessKeyValueCompaction(int64_t* imm_micros, Iterator* input,
|
|
bool is_compaction_v2);
|
|
// Call compaction_filter_v2->Filter() on kv-pairs in compact
|
|
void CallCompactionFilterV2(CompactionFilterV2* compaction_filter_v2);
|
|
Status FinishCompactionOutputFile(Iterator* input);
|
|
Status InstallCompactionResults(port::Mutex* db_mutex);
|
|
SequenceNumber findEarliestVisibleSnapshot(
|
|
SequenceNumber in, const std::vector<SequenceNumber>& snapshots,
|
|
SequenceNumber* prev_snapshot);
|
|
void RecordCompactionIOStats();
|
|
Status OpenCompactionOutputFile();
|
|
void CleanupCompaction(Status status);
|
|
|
|
// CompactionJob state
|
|
struct CompactionState;
|
|
CompactionState* compact_;
|
|
|
|
bool bottommost_level_;
|
|
SequenceNumber earliest_snapshot_;
|
|
SequenceNumber visible_at_tip_;
|
|
SequenceNumber latest_snapshot_;
|
|
|
|
InternalStats::CompactionStats compaction_stats_;
|
|
|
|
// DBImpl state
|
|
const DBOptions& db_options_;
|
|
const MutableCFOptions& mutable_cf_options_;
|
|
const EnvOptions& env_options_;
|
|
Env* env_;
|
|
VersionSet* versions_;
|
|
std::atomic<bool>* shutting_down_;
|
|
LogBuffer* log_buffer_;
|
|
Directory* db_directory_;
|
|
Statistics* stats_;
|
|
SnapshotList* snapshots_;
|
|
bool is_snapshot_supported_;
|
|
std::shared_ptr<Cache> table_cache_;
|
|
|
|
// yield callback
|
|
std::function<uint64_t()> yield_callback_;
|
|
};
|
|
|
|
} // namespace rocksdb
|
|
|