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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "raw_allocator.h"
namespace vespalib::datastore {
/**
* Allocator used to allocate raw buffers (EntryT *) in an underlying data store
* with no construction or de-construction of elements in the buffer. Uses free lists if available.
*
* If free lists are enabled this allocator should only be used when
* allocating the same number of elements each time (equal to cluster size).
*/
template <typename EntryT, typename RefT>
class FreeListRawAllocator : public RawAllocator<EntryT, RefT>
{
public:
using ParentType = RawAllocator<EntryT, RefT>;
using HandleType = typename ParentType::HandleType;
private:
using ParentType::_store;
using ParentType::_typeId;
public:
FreeListRawAllocator(DataStoreBase &store, uint32_t typeId);
HandleType alloc(size_t num_entries);
template <typename BufferType>
HandleType alloc_dynamic_array(size_t array_size);
};
}
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