foundationdb/flowbench/GlobalData.cpp

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/*
* GlobalData.cpp
*
* This source file is part of the FoundationDB open source project
*
* Copyright 2013-2020 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/FDBTypes.h"
#include "flow/IRandom.h"
static constexpr size_t globalDataSize = 1 << 20;
static uint8_t* globalData = nullptr;
static inline void initGlobalData() {
if (!globalData) {
globalData = static_cast<uint8_t*>(allocateFast(globalDataSize));
}
generateRandomData(globalData, globalDataSize);
}
KeyValueRef getKV(size_t keySize, size_t valueSize) {
initGlobalData();
ASSERT(keySize + valueSize <= globalDataSize);
return KeyValueRef(KeyRef(globalData, keySize), ValueRef(globalData + keySize, valueSize));
}
KeyRef getKey(size_t keySize) {
initGlobalData();
ASSERT(keySize);
return KeyRef(globalData, keySize);
}