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An Elixir DuckDB library

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duckdbex c_src allocator.h
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c_src/allocator.h 

#pragma once

#include <erl_nif.h>

#include "duckdb.hpp"



namespace nif {

  duckdb::data_ptr_t eddb_allocate(duckdb::PrivateAllocatorData *private_data, duckdb::idx_t n) {

    if(n > std::size_t(-1) / sizeof(duckdb::data_t))

      throw std::bad_alloc();



    if(auto p = static_cast<duckdb::data_ptr_t>(enif_alloc(n * sizeof(duckdb::data_t))))

      return p;



    throw std::bad_alloc();

  }



  void eddb_free(duckdb::PrivateAllocatorData *private_data, duckdb::data_ptr_t p, duckdb::idx_t n) {

    enif_free(p);

  }



  duckdb::data_ptr_t eddb_reallocate(duckdb::PrivateAllocatorData *private_data, duckdb::data_ptr_t p, duckdb::idx_t old_size, duckdb::idx_t n) {

    if(auto rp = static_cast<duckdb::data_ptr_t>(enif_realloc(p, n * sizeof(duckdb::data_t))))

      return rp;



    throw std::bad_alloc();

  }

}