// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements.  See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership.  The ASF licenses this file

// to you under the Apache License, Version 2.0 (the

// "License"); you may not use this file except in compliance

// with the License.  You may obtain a copy of the License at

//

//   http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing,

// software distributed under the License is distributed on an

// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

// KIND, either express or implied.  See the License for the

// specific language governing permissions and limitations

// under the License.

#pragma once

#include <vector>

#include "gutil/ref_counted.h"

#include "util/countdown_latch.h"

#include "util/thread.h"

namespace doris {

class Daemon {

public:

    Daemon() : _stop_background_threads_latch(1) {}

    ~Daemon() = default;

    // Start background threads

    void start();

    // Stop background threads

    void stop();

private:

    void tcmalloc_gc_thread();

    void memory_maintenance_thread();

    void memory_gc_thread();

    void memtable_memory_limiter_tracker_refresh_thread();

    void calculate_metrics_thread();

    void je_purge_dirty_pages_thread() const;

    void cache_prune_stale_thread();

    void report_runtime_query_statistics_thread();

    void wg_weighted_memory_ratio_refresh_thread();

    void calculate_workload_group_metrics_thread();

    CountDownLatch _stop_background_threads_latch;

    std::vector<scoped_refptr<Thread>> _threads;

};

} // namespace doris