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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/vespalib/stllike/string.h>
#include <atomic>
namespace search::attribute {
class Status
{
public:
Status();
Status(const Status& rhs);
Status& operator=(const Status& rhs);
void updateStatistics(uint64_t numValues, uint64_t numUniqueValue, uint64_t allocated,
uint64_t used, uint64_t dead, uint64_t onHold);
uint64_t getNumDocs() const { return _numDocs.load(std::memory_order_relaxed); }
uint64_t getNumValues() const { return _numValues.load(std::memory_order_relaxed); }
uint64_t getNumUniqueValues() const { return _numUniqueValues.load(std::memory_order_relaxed); }
uint64_t getAllocated() const { return _allocated.load(std::memory_order_relaxed); }
uint64_t getUsed() const { return _used.load(std::memory_order_relaxed); }
uint64_t getDead() const { return _dead.load(std::memory_order_relaxed); }
uint64_t getOnHold() const { return _onHold.load(std::memory_order_relaxed); }
uint64_t getOnHoldMax() const { return _onHoldMax.load(std::memory_order_relaxed); }
// This might be accessed from other threads than the writer thread.
uint64_t getLastSyncToken() const { return _lastSyncToken.load(std::memory_order_relaxed); }
uint64_t getUpdateCount() const { return _updates; }
uint64_t getNonIdempotentUpdateCount() const { return _nonIdempotentUpdates; }
uint32_t getBitVectors() const { return _bitVectors.load(std::memory_order_relaxed); }
void setNumDocs(uint64_t v) { _numDocs.store(v, std::memory_order_relaxed); }
void incNumDocs() { _numDocs.store(_numDocs.load(std::memory_order_relaxed) + 1u,
std::memory_order_relaxed); }
void setLastSyncToken(uint64_t v) { _lastSyncToken.store(v, std::memory_order_relaxed); }
void incUpdates(uint64_t v=1) { _updates += v; }
void incNonIdempotentUpdates(uint64_t v = 1) { _nonIdempotentUpdates += v; }
void incBitVectors() { _bitVectors.store(getBitVectors() + 1, std::memory_order_relaxed); }
void decBitVectors() { _bitVectors.store(getBitVectors() - 1, std::memory_order_relaxed); }
static vespalib::string
createName(vespalib::stringref index, vespalib::stringref attr);
private:
std::atomic<uint64_t> _numDocs;
std::atomic<uint64_t> _numValues;
std::atomic<uint64_t> _numUniqueValues;
std::atomic<uint64_t> _allocated;
std::atomic<uint64_t> _used;
std::atomic<uint64_t> _dead;
std::atomic<uint64_t> _unused;
std::atomic<uint64_t> _onHold;
std::atomic<uint64_t> _onHoldMax;
std::atomic<uint64_t> _lastSyncToken;
uint64_t _updates;
uint64_t _nonIdempotentUpdates;
std::atomic<uint32_t> _bitVectors;
};
}
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