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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 "datastore.hpp"
#include "entry_comparator_wrapper.h"
#include "entry_ref_filter.h"
#include "i_compactable.h"
#include "unique_store_add_result.h"
#include "unique_store_dictionary.h"
#include "unique_store_btree_dictionary_read_snapshot.hpp"
#include "unique_store_hash_dictionary_read_snapshot.hpp"
#include <vespa/vespalib/btree/btree.hpp>
#include <vespa/vespalib/btree/btreebuilder.hpp>
#include <vespa/vespalib/btree/btreeiterator.hpp>
#include <vespa/vespalib/btree/btreenode.hpp>
#include <vespa/vespalib/btree/btreenodeallocator.hpp>
#include <vespa/vespalib/btree/btreeroot.hpp>
namespace vespalib::datastore {
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::UniqueStoreDictionary(std::unique_ptr<EntryComparator> compare)
: ParentT(),
UniqueStoreBTreeDictionaryBase<BTreeDictionaryT>(),
UniqueStoreHashDictionaryBase<HashDictionaryT>(std::move(compare))
{
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::~UniqueStoreDictionary() = default;
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
void
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::freeze()
{
if constexpr (has_btree_dictionary) {
this->_btree_dict.getAllocator().freeze();
}
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
void
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::transfer_hold_lists(generation_t generation)
{
if constexpr (has_btree_dictionary) {
this->_btree_dict.getAllocator().transferHoldLists(generation);
}
if constexpr (has_hash_dictionary) {
this->_hash_dict.transfer_hold_lists(generation);
}
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
void
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::trim_hold_lists(generation_t firstUsed)
{
if constexpr (has_btree_dictionary) {
this->_btree_dict.getAllocator().trimHoldLists(firstUsed);
}
if constexpr (has_hash_dictionary) {
this->_hash_dict.trim_hold_lists(firstUsed);
}
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
UniqueStoreAddResult
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::add(const EntryComparator &comp,
std::function<EntryRef(void)> insertEntry)
{
if constexpr (has_btree_dictionary) {
using DataType = typename BTreeDictionaryType::DataType;
auto itr = this->_btree_dict.lowerBound(AtomicEntryRef(), comp);
if (itr.valid() && !comp.less(EntryRef(), itr.getKey().load_relaxed())) {
if constexpr (has_hash_dictionary) {
auto* result = this->_hash_dict.find(comp, EntryRef());
assert(result != nullptr && result->first.load_relaxed() == itr.getKey().load_relaxed());
}
return UniqueStoreAddResult(itr.getKey().load_relaxed(), false);
} else {
EntryRef newRef = insertEntry();
this->_btree_dict.insert(itr, AtomicEntryRef(newRef), DataType());
if constexpr (has_hash_dictionary) {
std::function<EntryRef(void)> insert_hash_entry([newRef]() noexcept -> EntryRef { return newRef; });
auto& add_result = this->_hash_dict.add(comp, newRef, insert_hash_entry);
assert(add_result.first.load_relaxed() == newRef);
}
return UniqueStoreAddResult(newRef, true);
}
} else {
bool inserted = false;
std::function<EntryRef(void)> insert_hash_entry([&inserted,&insertEntry]() { inserted = true; return insertEntry(); });
auto& add_result = this->_hash_dict.add(comp, EntryRef(), insert_hash_entry);
EntryRef newRef = add_result.first.load_relaxed();
assert(newRef.valid());
return UniqueStoreAddResult(newRef, inserted);
}
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
EntryRef
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::find(const EntryComparator &comp)
{
if constexpr (has_btree_dictionary) {
auto itr = this->_btree_dict.lowerBound(AtomicEntryRef(), comp);
if (itr.valid() && !comp.less(EntryRef(), itr.getKey().load_relaxed())) {
if constexpr (has_hash_dictionary) {
auto* result = this->_hash_dict.find(comp, EntryRef());
assert(result != nullptr && result->first.load_relaxed() == itr.getKey().load_relaxed());
}
return itr.getKey().load_relaxed();
} else {
if constexpr (has_hash_dictionary) {
auto* result = this->_hash_dict.find(comp, EntryRef());
assert(result == nullptr);
}
return EntryRef();
}
} else {
auto* result = this->_hash_dict.find(comp, EntryRef());
return (result == nullptr) ? EntryRef() : result->first.load_relaxed();
}
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
void
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::remove(const EntryComparator &comp, EntryRef ref)
{
assert(ref.valid());
if constexpr (has_btree_dictionary) {
auto itr = this->_btree_dict.lowerBound(AtomicEntryRef(ref), comp);
assert(itr.valid() && itr.getKey().load_relaxed() == ref);
this->_btree_dict.remove(itr);
}
if constexpr (has_hash_dictionary) {
auto *result = this->_hash_dict.remove(comp, ref);
assert(result != nullptr && result->first.load_relaxed() == ref);
}
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
void
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::move_keys(ICompactable &compactable, const EntryRefFilter& compacting_buffers)
{
if constexpr (has_btree_dictionary) {
auto itr = this->_btree_dict.begin();
while (itr.valid()) {
EntryRef oldRef(itr.getKey().load_relaxed());
assert(oldRef.valid());
if (compacting_buffers.has(oldRef)) {
EntryRef newRef(compactable.move(oldRef));
this->_btree_dict.thaw(itr);
itr.writeKey(AtomicEntryRef(newRef));
if constexpr (has_hash_dictionary) {
auto result = this->_hash_dict.find(this->_hash_dict.get_default_comparator(), oldRef);
assert(result != nullptr && result->first.load_relaxed() == oldRef);
result->first.store_release(newRef);
}
}
++itr;
}
} else {
this->_hash_dict.move_keys(compactable, compacting_buffers);
}
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
uint32_t
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::get_num_uniques() const
{
if constexpr (has_btree_dictionary) {
return this->_btree_dict.size();
} else {
return this->_hash_dict.size();
}
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
vespalib::MemoryUsage
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::get_memory_usage() const
{
vespalib::MemoryUsage memory_usage;
if constexpr (has_btree_dictionary) {
memory_usage.merge(this->_btree_dict.getMemoryUsage());
}
if constexpr (has_hash_dictionary) {
memory_usage.merge(this->_hash_dict.get_memory_usage());
}
return memory_usage;
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
void
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::build(vespalib::ConstArrayRef<EntryRef> refs,
vespalib::ConstArrayRef<uint32_t> ref_counts,
std::function<void(EntryRef)> hold)
{
assert(refs.size() == ref_counts.size());
assert(!refs.empty());
if constexpr (has_btree_dictionary) {
using DataType = typename BTreeDictionaryType::DataType;
typename BTreeDictionaryType::Builder builder(this->_btree_dict.getAllocator());
for (size_t i = 1; i < refs.size(); ++i) {
if (ref_counts[i] != 0u) {
builder.insert(AtomicEntryRef(refs[i]), DataType());
} else {
hold(refs[i]);
}
}
this->_btree_dict.assign(builder);
}
if constexpr (has_hash_dictionary) {
for (size_t i = 1; i < refs.size(); ++i) {
if (ref_counts[i] != 0u) {
EntryRef ref = refs[i];
std::function<EntryRef(void)> insert_hash_entry([ref]() noexcept -> EntryRef { return ref; });
auto& add_result = this->_hash_dict.add(this->_hash_dict.get_default_comparator(), ref, insert_hash_entry);
assert(add_result.first.load_relaxed() == ref);
} else if constexpr (!has_btree_dictionary) {
hold(refs[i]);
}
}
}
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
void
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::build(vespalib::ConstArrayRef<EntryRef> refs)
{
if constexpr (has_btree_dictionary) {
using DataType = typename BTreeDictionaryType::DataType;
typename BTreeDictionaryType::Builder builder(this->_btree_dict.getAllocator());
for (const auto& ref : refs) {
builder.insert(AtomicEntryRef(ref), DataType());
}
this->_btree_dict.assign(builder);
}
if constexpr (has_hash_dictionary) {
for (const auto& ref : refs) {
std::function<EntryRef(void)> insert_hash_entry([ref]() noexcept -> EntryRef { return ref; });
auto& add_result = this->_hash_dict.add(this->_hash_dict.get_default_comparator(), ref, insert_hash_entry);
assert(add_result.first.load_relaxed() == ref);
}
}
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
void
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::build_with_payload(vespalib::ConstArrayRef<EntryRef> refs,
vespalib::ConstArrayRef<EntryRef> payloads)
{
assert(refs.size() == payloads.size());
if constexpr (has_btree_dictionary) {
using DataType = typename BTreeDictionaryType::DataType;
typename BTreeDictionaryType::Builder builder(this->_btree_dict.getAllocator());
for (size_t i = 0; i < refs.size(); ++i) {
if constexpr (std::is_same_v<DataType, AtomicEntryRef>) {
builder.insert(AtomicEntryRef(refs[i]), AtomicEntryRef(payloads[i]));
} else {
builder.insert(AtomicEntryRef(refs[i]), DataType());
}
}
this->_btree_dict.assign(builder);
}
if constexpr (has_hash_dictionary) {
for (size_t i = 0; i < refs.size(); ++i) {
EntryRef ref = refs[i];
std::function<EntryRef(void)> insert_hash_entry([ref]() noexcept -> EntryRef { return ref; });
auto& add_result = this->_hash_dict.add(this->_hash_dict.get_default_comparator(), ref, insert_hash_entry);
assert(add_result.first.load_relaxed() == refs[i]);
add_result.second.store_relaxed(payloads[i]);
}
}
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
std::unique_ptr<IUniqueStoreDictionaryReadSnapshot>
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::get_read_snapshot() const
{
if constexpr (has_btree_dictionary) {
return std::make_unique<UniqueStoreBTreeDictionaryReadSnapshot<BTreeDictionaryT>>(this->_btree_dict.getFrozenView());
}
if constexpr (has_hash_dictionary) {
return std::make_unique<UniqueStoreHashDictionaryReadSnapshot<HashDictionaryT>>(this->_hash_dict);
}
return std::unique_ptr<IUniqueStoreDictionaryReadSnapshot>();
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
bool
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::get_has_btree_dictionary() const
{
return has_btree_dictionary;
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
bool
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::get_has_hash_dictionary() const
{
return has_hash_dictionary;
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
vespalib::MemoryUsage
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::get_btree_memory_usage() const
{
if constexpr (has_btree_dictionary) {
return this->_btree_dict.getMemoryUsage();
}
return {};
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
vespalib::MemoryUsage
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::get_hash_memory_usage() const
{
if constexpr (has_hash_dictionary) {
return this->_hash_dict.get_memory_usage();
}
return {};
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
bool
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::has_held_buffers() const
{
if constexpr (has_btree_dictionary) {
if (this->_btree_dict.getAllocator().getNodeStore().has_held_buffers()) {
return true;
}
}
if constexpr (has_hash_dictionary) {
if (this->_hash_dict.has_held_buffers()) {
return true;
}
}
return false;
}
template <typename BTreeDictionaryT, typename ParentT, typename HashDictionaryT>
void
UniqueStoreDictionary<BTreeDictionaryT, ParentT, HashDictionaryT>::compact_worst(bool compact_btree_dictionary, bool compact_hash_dictionary, const CompactionStrategy& compaction_strategy)
{
if constexpr (has_btree_dictionary) {
if (compact_btree_dictionary) {
this->_btree_dict.compact_worst(compaction_strategy);
}
} else {
(void) compact_btree_dictionary;
}
if constexpr (has_hash_dictionary) {
if (compact_hash_dictionary) {
this->_hash_dict.compact_worst_shard();
}
} else {
(void) compact_hash_dictionary;
}
}
}
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