////////////////////////////////////////////////////////////////////////////////
/// @brief Implementation part of generic transactions
///
/// @file Transaction.cpp
///
/// DISCLAIMER
///
/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
///     http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Max Neunhoeffer
/// @author Copyright 2014, triagens GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////

#include "Utils/transactions.h"

using namespace triagens::arango;

////////////////////////////////////////////////////////////////////////////////
/// @brief the following is for the runtime protection check, number of
/// transaction objects in scope in the current thread
////////////////////////////////////////////////////////////////////////////////

#ifdef TRI_ENABLE_MAINTAINER_MODE
thread_local int TransactionBase::_numberTrxInScope = 0;
#endif

////////////////////////////////////////////////////////////////////////////////
/// @brief the following is for the runtime protection check, number of
/// transaction objects in the current thread that are active (between
/// begin and commit()/abort().
////////////////////////////////////////////////////////////////////////////////

#ifdef TRI_ENABLE_MAINTAINER_MODE
thread_local int TransactionBase::_numberTrxActive = 0;
#endif

////////////////////////////////////////////////////////////////////////////////
/// @brief if this pointer is set to an actual set, then for each request
/// sent to a shardId using the ClusterComm library, an X-Arango-Nolock
/// header is generated.
////////////////////////////////////////////////////////////////////////////////

thread_local std::unordered_set<std::string>* Transaction::_makeNolockHeaders = nullptr;

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