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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
#pragma once
#include "rocksdb/memory_allocator.h"
namespace ROCKSDB_NAMESPACE {
struct CustomDeleter {
CustomDeleter(MemoryAllocator* a = nullptr) : allocator(a) {}
void operator()(char* ptr) const {
if (allocator) {
allocator->Deallocate(reinterpret_cast<void*>(ptr));
} else {
delete[] ptr;
}
}
MemoryAllocator* allocator;
};
using CacheAllocationPtr = std::unique_ptr<char[], CustomDeleter>;
inline CacheAllocationPtr AllocateBlock(size_t size,
MemoryAllocator* allocator) {
if (allocator) {
auto block = reinterpret_cast<char*>(allocator->Allocate(size));
return CacheAllocationPtr(block, allocator);
}
return CacheAllocationPtr(new char[size]);
}
} // namespace ROCKSDB_NAMESPACE
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