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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 "array_store_config.h"
#include "buffer_type.h"
#include <vespa/vespalib/util/array.h>
#include <memory>
namespace vespalib::alloc { class MemoryAllocator; }
namespace vespalib::datastore {
/*
* Class representing buffer type for large arrays in ArrayStore
*/
template <typename ElemT>
class LargeArrayBufferType : public BufferType<Array<ElemT>>
{
using AllocSpec = ArrayStoreConfig::AllocSpec;
using ArrayType = Array<ElemT>;
using ParentType = BufferType<ArrayType>;
using ParentType::empty_entry;
using CleanContext = typename ParentType::CleanContext;
std::shared_ptr<alloc::MemoryAllocator> _memory_allocator;
public:
LargeArrayBufferType(const AllocSpec& spec, std::shared_ptr<alloc::MemoryAllocator> memory_allocator) noexcept;
template <typename TypeMapper>
LargeArrayBufferType(const AllocSpec& spec, std::shared_ptr<alloc::MemoryAllocator> memory_allocator, TypeMapper&) noexcept
: LargeArrayBufferType(spec, std::move(memory_allocator))
{
}
~LargeArrayBufferType() override;
void clean_hold(void* buffer, size_t offset, EntryCount num_entries, CleanContext cleanCtx) override;
const vespalib::alloc::MemoryAllocator* get_memory_allocator() const override;
alloc::Alloc initial_alloc() const noexcept {
return _memory_allocator ? alloc::Alloc::alloc_with_allocator(_memory_allocator.get()) : alloc::Alloc::alloc(0, alloc::MemoryAllocator::HUGEPAGE_SIZE);
}
};
extern template class LargeArrayBufferType<uint8_t>;
extern template class LargeArrayBufferType<uint32_t>;
extern template class LargeArrayBufferType<int32_t>;
extern template class LargeArrayBufferType<std::string>;
extern template class LargeArrayBufferType<AtomicEntryRef>;
}
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