Pastable version of DataMapper threaded benchmark

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            <pre class="sunburst"><span style="color:#E28964;">require</span> <span style="color:#65B042;"><span style="color:#65B042;">'</span>rubygems<span style="color:#65B042;">'</span></span>
<span style="color:#E28964;">require</span> <span style="color:#65B042;"><span style="color:#65B042;">'</span>data_mapper<span style="color:#65B042;">'</span></span>
<span style="color:#E28964;">require</span> <span style="color:#65B042;"><span style="color:#65B042;">'</span>benchmark<span style="color:#65B042;">'</span></span>

<span style="color:#9B859D;">DataMapper</span>::<span style="color:#89BDFF;">Database</span>.<span style="color:#89BDFF;">setup</span>({ <span style="color:#3387CC;"><span style="color:#3387CC;">:</span>adapter</span> =&gt; <span style="color:#65B042;"><span style="color:#65B042;">'</span>sqlite3<span style="color:#65B042;">'</span></span>, <span style="color:#3387CC;"><span style="color:#3387CC;">:</span>database</span> =&gt; <span style="color:#65B042;"><span style="color:#65B042;">'</span>perf_dm.db<span style="color:#65B042;">'</span></span> })

<span style="color:#AEAEAE;font-style:italic;"><span style="color:#AEAEAE;font-style:italic;">#</span> set up DataMapper</span>
<span style="color:#E28964;">class</span> <span style="text-decoration:underline;">DmItem</span>
  <span style="color:#E28964;">include</span> <span style="color:#9B859D;">DataMapper</span>::<span style="color:#89BDFF;">Persistence</span>
  set_table_name <span style="color:#65B042;"><span style="color:#65B042;">'</span>items<span style="color:#65B042;">'</span></span>
  property <span style="color:#3387CC;"><span style="color:#3387CC;">:</span>name</span>, <span style="color:#3387CC;"><span style="color:#3387CC;">:</span>string</span>
  property <span style="color:#3387CC;"><span style="color:#3387CC;">:</span>description</span>, <span style="color:#3387CC;"><span style="color:#3387CC;">:</span>text</span>
  property <span style="color:#3387CC;"><span style="color:#3387CC;">:</span>active</span>, <span style="color:#3387CC;"><span style="color:#3387CC;">:</span>boolean</span>
  property <span style="color:#3387CC;"><span style="color:#3387CC;">:</span>created_at</span>, <span style="color:#3387CC;"><span style="color:#3387CC;">:</span>datetime</span>
<span style="color:#E28964;">end</span>
database.<span style="color:#89BDFF;">save</span>(<span style="color:#3E87E3;">DmItem</span>)
<span style="color:#AEAEAE;font-style:italic;"><span style="color:#AEAEAE;font-style:italic;">#</span> DataMapper::Persistence.auto_migrate!</span>

<span style="color:#3387CC;">1000</span>.<span style="color:#89BDFF;">times</span> <span style="color:#E28964;">do </span>|<span style="color:#3E87E3;">i</span>|
  x <span style="color:#E28964;">=</span> <span style="color:#9B859D;">DmItem</span>.<span style="color:#89BDFF;">new</span>(<span style="color:#3387CC;"><span style="color:#3387CC;">:</span>name</span> =&gt; <span style="color:#65B042;"><span style="color:#65B042;">&quot;</span>record_<span style="color:#DAEFA3;"><span style="color:#DAEFA3;">#{</span>i<span style="color:#DAEFA3;">}</span></span><span style="color:#65B042;">&quot;</span></span>, <span style="color:#3387CC;"><span style="color:#3387CC;">:</span>description</span> =&gt; <span style="color:#65B042;"><span style="color:#65B042;">&quot;</span>test record<span style="color:#65B042;">&quot;</span></span>, <span style="color:#3387CC;"><span style="color:#3387CC;">:</span>active</span> =&gt; i.<span style="color:#89BDFF;">remainder</span>(<span style="color:#3387CC;">3</span>).<span style="color:#89BDFF;">zero?</span>)
  x.<span style="color:#89BDFF;">save</span>
<span style="color:#E28964;">end</span>

<span style="color:#AEAEAE;font-style:italic;"><span style="color:#AEAEAE;font-style:italic;">#</span> run benchmarks</span>
<span style="color:#9B859D;">Benchmark</span>.<span style="color:#89BDFF;">bmbm</span> <span style="color:#E28964;">do </span>|<span style="color:#3E87E3;">x</span>|
  
  x.<span style="color:#89BDFF;">report</span>(<span style="color:#65B042;"><span style="color:#65B042;">'</span>DataMapper single-thread<span style="color:#65B042;">'</span></span>) <span style="color:#E28964;">do</span>
    <span style="color:#3387CC;">100</span>.<span style="color:#89BDFF;">times</span> <span style="color:#E28964;">do</span>
      <span style="color:#9B859D;">DmItem</span>.<span style="color:#89BDFF;">all</span>(<span style="color:#3387CC;"><span style="color:#3387CC;">:</span>active</span> =&gt; <span style="color:#3387CC;">false</span>)
    <span style="color:#E28964;">end</span>
  <span style="color:#E28964;">end</span>
  
  x.<span style="color:#89BDFF;">report</span>(<span style="color:#65B042;"><span style="color:#65B042;">'</span>DataMapper threaded<span style="color:#65B042;">'</span></span>) <span style="color:#E28964;">do</span>
    threads <span style="color:#E28964;">=</span> []
    <span style="color:#3387CC;">10</span>.<span style="color:#89BDFF;">times</span> <span style="color:#E28964;">do</span>
      t <span style="color:#E28964;">=</span> <span style="color:#9B859D;">Thread</span>.<span style="color:#89BDFF;">new</span> <span style="color:#E28964;">do</span>
        <span style="color:#3387CC;">10</span>.<span style="color:#89BDFF;">times</span> <span style="color:#E28964;">do</span>
          <span style="color:#9B859D;">DmItem</span>.<span style="color:#89BDFF;">all</span>(<span style="color:#3387CC;"><span style="color:#3387CC;">:</span>active</span> =&gt; <span style="color:#3387CC;">false</span>)
        <span style="color:#E28964;">end</span>
      <span style="color:#E28964;">end</span>
      threads.<span style="color:#89BDFF;">push</span>(t)
    <span style="color:#E28964;">end</span>
    threads.<span style="color:#89BDFF;">each</span> { |<span style="color:#3E87E3;">t</span>| t.<span style="color:#89BDFF;">join</span> }
  <span style="color:#E28964;">end</span>
  
<span style="color:#E28964;">end</span>

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