mirror of https://github.com/facebook/rocksdb.git
112 lines
3.7 KiB
C++
112 lines
3.7 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#ifndef ROCKSDB_LITE
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#include "utilities/transactions/optimistic_transaction_db_impl.h"
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#include <string>
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#include <vector>
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#include "db/db_impl/db_impl.h"
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#include "rocksdb/db.h"
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#include "rocksdb/options.h"
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#include "rocksdb/utilities/optimistic_transaction_db.h"
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#include "utilities/transactions/optimistic_transaction.h"
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namespace rocksdb {
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Transaction* OptimisticTransactionDBImpl::BeginTransaction(
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const WriteOptions& write_options,
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const OptimisticTransactionOptions& txn_options, Transaction* old_txn) {
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if (old_txn != nullptr) {
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ReinitializeTransaction(old_txn, write_options, txn_options);
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return old_txn;
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} else {
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return new OptimisticTransaction(this, write_options, txn_options);
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}
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}
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std::unique_lock<std::mutex> OptimisticTransactionDBImpl::LockBucket(
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size_t idx) {
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assert(idx < bucketed_locks_.size());
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return std::unique_lock<std::mutex>(*bucketed_locks_[idx]);
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}
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Status OptimisticTransactionDB::Open(const Options& options,
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const std::string& dbname,
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OptimisticTransactionDB** dbptr) {
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DBOptions db_options(options);
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ColumnFamilyOptions cf_options(options);
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std::vector<ColumnFamilyDescriptor> column_families;
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column_families.push_back(
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ColumnFamilyDescriptor(kDefaultColumnFamilyName, cf_options));
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std::vector<ColumnFamilyHandle*> handles;
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Status s = Open(db_options, dbname, column_families, &handles, dbptr);
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if (s.ok()) {
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assert(handles.size() == 1);
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// i can delete the handle since DBImpl is always holding a reference to
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// default column family
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delete handles[0];
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}
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return s;
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}
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Status OptimisticTransactionDB::Open(
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const DBOptions& db_options, const std::string& dbname,
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const std::vector<ColumnFamilyDescriptor>& column_families,
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std::vector<ColumnFamilyHandle*>* handles,
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OptimisticTransactionDB** dbptr) {
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return OptimisticTransactionDB::Open(db_options,
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OptimisticTransactionDBOptions(), dbname,
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column_families, handles, dbptr);
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}
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Status OptimisticTransactionDB::Open(
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const DBOptions& db_options,
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const OptimisticTransactionDBOptions& occ_options,
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const std::string& dbname,
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const std::vector<ColumnFamilyDescriptor>& column_families,
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std::vector<ColumnFamilyHandle*>* handles,
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OptimisticTransactionDB** dbptr) {
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Status s;
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DB* db;
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std::vector<ColumnFamilyDescriptor> column_families_copy = column_families;
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// Enable MemTable History if not already enabled
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for (auto& column_family : column_families_copy) {
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ColumnFamilyOptions* options = &column_family.options;
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if (options->max_write_buffer_size_to_maintain == 0 &&
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options->max_write_buffer_number_to_maintain == 0) {
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// Setting to -1 will set the History size to
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// max_write_buffer_number * write_buffer_size.
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options->max_write_buffer_size_to_maintain = -1;
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}
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}
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s = DB::Open(db_options, dbname, column_families_copy, handles, &db);
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if (s.ok()) {
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*dbptr = new OptimisticTransactionDBImpl(db, occ_options);
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}
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return s;
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}
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void OptimisticTransactionDBImpl::ReinitializeTransaction(
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Transaction* txn, const WriteOptions& write_options,
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const OptimisticTransactionOptions& txn_options) {
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assert(dynamic_cast<OptimisticTransaction*>(txn) != nullptr);
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auto txn_impl = reinterpret_cast<OptimisticTransaction*>(txn);
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txn_impl->Reinitialize(this, write_options, txn_options);
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}
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} // namespace rocksdb
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#endif // ROCKSDB_LITE
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