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RocksDB for Erlang

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rocksdb c_src rate_limiter.h
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c_src/rate_limiter.h 

// Copyright (c) 2018 Sergey Yelin

// Copyright (c) 2018-2025 Benoit Chesneau

// /

// This file is provided 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

#ifndef INCL_RATELIMITER_H

#define INCL_RATELIMITER_H



#include <mutex>

#include <memory>



#include "erl_nif.h"



// Forward declaration

namespace rocksdb {

    class RateLimiter;

}



namespace erocksdb {



  class RateLimiter {

    protected:

      static ErlNifResourceType* m_RateLimiter_RESOURCE;



    public:

      std::mutex mu;



      explicit RateLimiter(std::shared_ptr<rocksdb::RateLimiter> rate_limiter);



      ~RateLimiter();



      std::shared_ptr<rocksdb::RateLimiter> rate_limiter();



      static void CreateRateLimiterType(ErlNifEnv * Env);

      static void RateLimiterResourceCleanup(ErlNifEnv *Env, void * Arg);



      static RateLimiter * CreateRateLimiterResource(std::shared_ptr<rocksdb::RateLimiter> rate_limiter);

      static RateLimiter * RetrieveRateLimiterResource(ErlNifEnv * Env, const ERL_NIF_TERM & RateLimiterTerm);



    private:

      std::shared_ptr<rocksdb::RateLimiter> rate_limiter_;

  };



}



#endif // INCL_RATELIMITER_H