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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "single_raw_attribute.h"
#include "empty_search_context.h"
#include "single_raw_attribute_loader.h"
#include "single_raw_attribute_saver.h"
#include <vespa/searchcommon/attribute/config.h>
#include <vespa/searchlib/attribute/address_space_components.h>
#include <vespa/vespalib/datastore/array_store.hpp>
using vespalib::alloc::MemoryAllocator;
using vespalib::datastore::EntryRef;
namespace search::attribute {
SingleRawAttribute::SingleRawAttribute(const vespalib::string& name, const Config& config)
: RawAttribute(name, config),
_ref_vector(config.getGrowStrategy(), getGenerationHolder()),
_raw_store(get_memory_allocator(), RawBufferStore::array_store_max_type_id, RawBufferStore::array_store_grow_factor)
{
}
SingleRawAttribute::~SingleRawAttribute()
{
getGenerationHolder().reclaim_all();
}
void
SingleRawAttribute::reclaim_memory(generation_t oldest_used_gen)
{
_raw_store.reclaim_memory(oldest_used_gen);
getGenerationHolder().reclaim(oldest_used_gen);
}
void
SingleRawAttribute::before_inc_generation(generation_t current_gen)
{
getGenerationHolder().assign_generation(current_gen);
_raw_store.assign_generation(current_gen);
}
bool
SingleRawAttribute::addDoc(DocId &docId)
{
bool incGen = _ref_vector.isFull();
_ref_vector.push_back(AtomicEntryRef());
AttributeVector::incNumDocs();
docId = AttributeVector::getNumDocs() - 1;
updateUncommittedDocIdLimit(docId);
if (incGen) {
incGeneration();
} else {
reclaim_unused_memory();
}
return true;
}
void
SingleRawAttribute::onCommit()
{
incGeneration();
if (_raw_store.consider_compact()) {
auto context = _raw_store.start_compact(getConfig().getCompactionStrategy());
if (context) {
context->compact(vespalib::ArrayRef<AtomicEntryRef>(&_ref_vector[0], _ref_vector.size()));
}
incGeneration();
updateStat(true);
}
}
void
SingleRawAttribute::onUpdateStat()
{
vespalib::MemoryUsage total = update_stat();
this->updateStatistics(_ref_vector.size(),
_ref_vector.size(),
total.allocatedBytes(),
total.usedBytes(),
total.deadBytes(),
total.allocatedBytesOnHold());
}
vespalib::MemoryUsage
SingleRawAttribute::update_stat()
{
vespalib::MemoryUsage result = _ref_vector.getMemoryUsage();
result.merge(_raw_store.update_stat(getConfig().getCompactionStrategy()));
result.mergeGenerationHeldBytes(getGenerationHolder().get_held_bytes());
return result;
}
vespalib::ConstArrayRef<char>
SingleRawAttribute::get_raw(DocId docid) const
{
EntryRef ref;
if (docid < getCommittedDocIdLimit()) {
ref = acquire_entry_ref(docid);
}
if (!ref.valid()) {
return {};
}
return _raw_store.get(ref);
}
void
SingleRawAttribute::set_raw(DocId docid, vespalib::ConstArrayRef<char> raw)
{
auto ref = _raw_store.set(raw);
assert(docid < _ref_vector.size());
updateUncommittedDocIdLimit(docid);
auto& elem_ref = _ref_vector[docid];
EntryRef old_ref(elem_ref.load_relaxed());
elem_ref.store_release(ref);
if (old_ref.valid()) {
_raw_store.remove(old_ref);
}
}
uint32_t
SingleRawAttribute::clearDoc(DocId docId)
{
updateUncommittedDocIdLimit(docId);
auto& elem_ref = _ref_vector[docId];
EntryRef old_ref(elem_ref.load_relaxed());
elem_ref.store_relaxed(EntryRef());
if (old_ref.valid()) {
_raw_store.remove(old_ref);
return 1u;
}
return 0u;
}
std::unique_ptr<AttributeSaver>
SingleRawAttribute::onInitSave(vespalib::stringref fileName)
{
vespalib::GenerationHandler::Guard guard(getGenerationHandler().takeGuard());
return std::make_unique<SingleRawAttributeSaver>
(std::move(guard),
this->createAttributeHeader(fileName),
make_entry_ref_vector_snapshot(_ref_vector, getCommittedDocIdLimit()),
_raw_store);
}
bool
SingleRawAttribute::onLoad(vespalib::Executor* executor)
{
SingleRawAttributeLoader loader(*this, _ref_vector, _raw_store);
return loader.on_load(executor);
}
bool
SingleRawAttribute::isUndefined(DocId docid) const
{
auto raw = get_raw(docid);
return raw.empty();
}
void
SingleRawAttribute::populate_address_space_usage(AddressSpaceUsage& usage) const
{
usage.set(AddressSpaceComponents::raw_store, _raw_store.get_address_space_usage());
}
std::unique_ptr<attribute::SearchContext>
SingleRawAttribute::getSearch(std::unique_ptr<QueryTermSimple>, const attribute::SearchContextParams&) const
{
return std::make_unique<EmptySearchContext>(*this);
}
}
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