foundationdb/fdbclient/ISingleThreadTransaction.cpp

/*
 * ISingleThreadTransaction.cpp
 *
 * This source file is part of the FoundationDB open source project
 *
 * Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
 *
 * 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.
 */

#include "fdbclient/DatabaseContext.h"
#include "fdbclient/ISingleThreadTransaction.h"
#include "fdbclient/PaxosConfigTransaction.h"
#include "fdbclient/ReadYourWrites.h"
#include "fdbclient/SimpleConfigTransaction.h"

ISingleThreadTransaction* ISingleThreadTransaction::allocateOnForeignThread(Type type) {
	if (type == Type::RYW) {
		auto tr =
		    (ReadYourWritesTransaction*)(ReadYourWritesTransaction::operator new(sizeof(ReadYourWritesTransaction)));
		tr->preinitializeOnForeignThread();
		return tr;
	} else if (type == Type::SIMPLE_CONFIG) {
		auto tr = (SimpleConfigTransaction*)(SimpleConfigTransaction::operator new(sizeof(SimpleConfigTransaction)));
		return tr;
	} else if (type == Type::PAXOS_CONFIG) {
		auto tr = (PaxosConfigTransaction*)(PaxosConfigTransaction::operator new(sizeof(PaxosConfigTransaction)));
		return tr;
	}
	ASSERT(false);
	return nullptr;
}

void ISingleThreadTransaction::create(ISingleThreadTransaction* tr, Type type, Database db) {
	switch (type) {
	case Type::RYW:
		new (tr) ReadYourWritesTransaction(db);
		break;
	case Type::SIMPLE_CONFIG:
		new (tr) SimpleConfigTransaction(db);
		break;
	case Type::PAXOS_CONFIG:
		new (tr) PaxosConfigTransaction(db);
		break;
	default:
		ASSERT(false);
	}
}