rocksdb/utilities/transactions/transaction_db_mutex_impl.h
agiardullo 5e94f68f35 TransactionDB Custom Locking API
Summary:
Prototype of API to allow MyRocks to override default Mutex/CondVar used by transactions with their own implementations.  They would simply need to pass their own implementations of Mutex/CondVar to the templated TransactionDB::Open().

Default implementation of TransactionDBMutex/TransactionDBCondVar provided (but the code is not currently changed to use this).

Let me know if this API makes sense or if it should be changed

Test Plan: n/a

Reviewers: yhchiang, rven, igor, sdong, spetrunia

Reviewed By: spetrunia

Subscribers: maykov, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D43761
2015-09-08 17:03:57 -07:00

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// Copyright (c) 2015, 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.
#pragma once
#ifndef ROCKSDB_LITE
#include "rocksdb/utilities/transaction_db_mutex.h"
namespace rocksdb {
class TransactionDBMutex;
class TransactionDBCondVar;
// Default implementation of TransactionDBMutexFactory. May be overridden
// by TransactionDBOptions.custom_mutex_factory.
class TransactionDBMutexFactoryImpl : public TransactionDBMutexFactory {
public:
std::shared_ptr<TransactionDBMutex> AllocateMutex() override;
std::shared_ptr<TransactionDBCondVar> AllocateCondVar() override;
};
} // namespace rocksdb
#endif // ROCKSDB_LITE