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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 "unique_store_enumerator.h"
#include <vespa/vespalib/datastore/bufferstate.h>
#include <vespa/vespalib/datastore/datastorebase.h>
namespace vespalib::datastore {
template <typename RefT>
UniqueStoreEnumerator<RefT>::UniqueStoreEnumerator(const IUniqueStoreDictionary &dict, const DataStoreBase &store, bool sort_unique_values)
: _dict_snapshot(dict.get_read_snapshot()),
_store(store),
_enumValues(),
_next_enum_val(1)
{
_dict_snapshot->fill();
if (sort_unique_values) {
_dict_snapshot->sort();
}
allocate_enum_values();
}
template <typename RefT>
UniqueStoreEnumerator<RefT>::~UniqueStoreEnumerator() = default;
template <typename RefT>
void
UniqueStoreEnumerator<RefT>::enumerateValue(EntryRef ref)
{
RefType iRef(ref);
assert(iRef.valid());
assert(iRef.unscaled_offset() < _enumValues[iRef.bufferId()].size());
uint32_t &enumVal = _enumValues[iRef.bufferId()][iRef.unscaled_offset()];
assert(enumVal == 0u);
enumVal = _next_enum_val;
++_next_enum_val;
}
template <typename RefT>
void
UniqueStoreEnumerator<RefT>::allocate_enum_values()
{
_enumValues.resize(RefType::numBuffers());
for (uint32_t bufferId = 0; bufferId < RefType::numBuffers(); ++bufferId) {
const BufferState &state = _store.getBufferState(bufferId);
if (state.isActive()) {
_enumValues[bufferId].resize(state.get_used_arrays());
}
}
}
template <typename RefT>
void
UniqueStoreEnumerator<RefT>::enumerateValues()
{
_next_enum_val = 1;
_dict_snapshot->foreach_key([this](EntryRef ref) { enumerateValue(ref); });
}
template <typename RefT>
void
UniqueStoreEnumerator<RefT>::clear()
{
EnumValues().swap(_enumValues);
}
}
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