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  508   <body id="ddoc_main" class="ddoc dlang">
  509     <div class="content_wrapper">
  510       <article class="module">
  511         <h1 class="module_name">dmd.root.region</h1>
  512         <section id="module_content"><section class="section ddoc_sections">
  513   <div class="ddoc_summary">
  514   <p class="para">
  515     Region storage allocator implementation.
  516 
  517   </p>
  518 </div>
  519 <div class="ddoc_authors">
  520   <h4>Authors</h4>
  521   <p class="para">
  522     <a href="http://www.digitalmars.com">Walter Bright</a>
  523 
  524   </p>
  525 </div>
  526 <div class="ddoc_license">
  527   <h4>License</h4>
  528   <p class="para">
  529     <a href="http://www.boost.org/LICENSE_1_0.txt">Boost License 1.0</a>
  530 
  531   </p>
  532 </div>
  533 <div class="ddoc_section">
  534   <p class="para">
  535     <span class="ddoc_section_h">Source:</span>
  536 <a href="https://github.com/dlang/dmd/blob/master/src/dmd/root/region.d">root/region.d</a>
  537 
  538   </p>
  539 </div>
  540 <div class="ddoc_section">
  541   <p class="para">
  542     <span class="ddoc_section_h">Documentation:</span>
  543 <a href="https://dlang.org/phobos/dmd_root_region.html">https://dlang.org/phobos/dmd_root_region.html</a>
  544 
  545   </p>
  546 </div>
  547 <div class="ddoc_section">
  548   <p class="para">
  549     <span class="ddoc_section_h">Coverage:</span>
  550 <a href="https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/region.d">https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/region.d</a>
  551   </p>
  552 </div>
  553 
  554 </section>
  555 <section class="section ddoc_module_members_section">
  556   <div class="ddoc_module_members">
  557     <ul class="ddoc_members">
  558   <li class="ddoc_member">
  559   <div class="ddoc_member_header">
  560   <div class="ddoc_header_anchor">
  561   <a href="#Region" id="Region"><code class="code">Region</code></a>
  562 </div>
  563 </div><div class="ddoc_decl">
  564   <section class="section">
  565     <div class="declaration">
  566       <h4>Declaration</h4>
  567       <div class="dlang">
  568         <p class="para">
  569           <code class="code">
  570             <span class="ddoc_anchor" id="Region"></span>struct <code class="code">Region</code>;
  571 
  572           </code>
  573         </p>
  574       </div>
  575     </div>
  576   </section>
  577 </div>
  578 <div class="ddoc_decl">
  579   <section class="section ddoc_sections">
  580   <div class="ddoc_summary">
  581   <p class="para">
  582     Simple region storage allocator.
  583   </p>
  584 </div>
  585 
  586 </section>
  587 <ul class="ddoc_members">
  588   <li class="ddoc_member">
  589   <div class="ddoc_member_header">
  590   <div class="ddoc_header_anchor">
  591   <a href="#Region.malloc" id="Region.malloc"><code class="code">malloc</code></a>
  592 </div>
  593 </div><div class="ddoc_decl">
  594   <section class="section">
  595     <div class="declaration">
  596       <h4>Declaration</h4>
  597       <div class="dlang">
  598         <p class="para">
  599           <code class="code">
  600             <span class="ddoc_anchor" id="Region.malloc"></span>nothrow void* <code class="code">malloc</code>(size_t <code class="code">nbytes</code>);
  601 
  602           </code>
  603         </p>
  604       </div>
  605     </div>
  606   </section>
  607 </div>
  608 <div class="ddoc_decl">
  609   <section class="section ddoc_sections">
  610   <div class="ddoc_summary">
  611   <p class="para">
  612     Allocate <code class="code">nbytes</code>. Aborts on failure.
  613 
  614   </p>
  615 </div>
  616 <div class="ddoc_params">
  617   <h4>Parameters</h4>
  618   <table cellspacing="0" cellpadding="5" border="0" class="graybox">
  619     <tbody>
  620       <tr class="ddoc_param_row">
  621   <td scope="ddoc_param_id">
  622   <code class="code">
  623     <em class="term">size_t <code class="code">nbytes</code></em>
  624   </code>
  625 </td>
  626 <td>
  627   <div class="ddoc_param_desc">
  628     <p class="para">
  629       number of bytes to allocate, can be 0, must be &lt;= than MaxAllocSize
  630     </p>
  631   </div>
  632 </td>
  633 </tr>
  634 
  635     </tbody>
  636   </table>
  637 </div>
  638 <div class="ddoc_returns">
  639   <h4>Return Value</h4>
  640   <p class="para">
  641     allocated data, <code class="code">null</code> for <code class="code">nbytes</code>==0
  642   </p>
  643 </div>
  644 
  645 </section>
  646 
  647 </div>
  648 
  649 </li><li class="ddoc_member">
  650   <div class="ddoc_member_header">
  651   <div class="ddoc_header_anchor">
  652   <a href="#Region.savePos" id="Region.savePos"><code class="code">savePos</code></a>
  653 </div>
  654 </div><div class="ddoc_decl">
  655   <section class="section">
  656     <div class="declaration">
  657       <h4>Declaration</h4>
  658       <div class="dlang">
  659         <p class="para">
  660           <code class="code">
  661             <span class="ddoc_anchor" id="Region.savePos"></span>nothrow RegionPos <code class="code">savePos</code>();
  662 
  663           </code>
  664         </p>
  665       </div>
  666     </div>
  667   </section>
  668 </div>
  669 <div class="ddoc_decl">
  670   <section class="section ddoc_sections">
  671   <div class="ddoc_summary">
  672   <p class="para">
  673     Return stack position for allocations in this region.
  674 
  675   </p>
  676 </div>
  677 <div class="ddoc_returns">
  678   <h4>Return Value</h4>
  679   <p class="para">
  680     an opaque struct to be passed to <code class="code">release()</code>
  681   </p>
  682 </div>
  683 
  684 </section>
  685 
  686 </div>
  687 
  688 </li><li class="ddoc_member">
  689   <div class="ddoc_member_header">
  690   <div class="ddoc_header_anchor">
  691   <a href="#Region.release" id="Region.release"><code class="code">release</code></a>
  692 </div>
  693 </div><div class="ddoc_decl">
  694   <section class="section">
  695     <div class="declaration">
  696       <h4>Declaration</h4>
  697       <div class="dlang">
  698         <p class="para">
  699           <code class="code">
  700             <span class="ddoc_anchor" id="Region.release"></span>nothrow void <code class="code">release</code>(RegionPos <code class="code">pos</code>);
  701 
  702           </code>
  703         </p>
  704       </div>
  705     </div>
  706   </section>
  707 </div>
  708 <div class="ddoc_decl">
  709   <section class="section ddoc_sections">
  710   <div class="ddoc_summary">
  711   <p class="para">
  712     Release the memory that was allocated after the respective call to <code class="code">savePos()</code>.
  713 
  714   </p>
  715 </div>
  716 <div class="ddoc_params">
  717   <h4>Parameters</h4>
  718   <table cellspacing="0" cellpadding="5" border="0" class="graybox">
  719     <tbody>
  720       <tr class="ddoc_param_row">
  721   <td scope="ddoc_param_id">
  722   <code class="code">
  723     <em class="term">RegionPos <code class="code">pos</code></em>
  724   </code>
  725 </td>
  726 <td>
  727   <div class="ddoc_param_desc">
  728     <p class="para">
  729       position returned by <code class="code">savePos()</code>
  730     </p>
  731   </div>
  732 </td>
  733 </tr>
  734 
  735     </tbody>
  736   </table>
  737 </div>
  738 
  739 </section>
  740 
  741 </div>
  742 
  743 </li><li class="ddoc_member">
  744   <div class="ddoc_member_header">
  745   <div class="ddoc_header_anchor">
  746   <a href="#Region.contains" id="Region.contains"><code class="code">contains</code></a>
  747 </div>
  748 </div><div class="ddoc_decl">
  749   <section class="section">
  750     <div class="declaration">
  751       <h4>Declaration</h4>
  752       <div class="dlang">
  753         <p class="para">
  754           <code class="code">
  755             <span class="ddoc_anchor" id="Region.contains"></span>nothrow bool <code class="code">contains</code>(void* <code class="code">p</code>);
  756 
  757           </code>
  758         </p>
  759       </div>
  760     </div>
  761   </section>
  762 </div>
  763 <div class="ddoc_decl">
  764   <section class="section ddoc_sections">
  765   <div class="ddoc_summary">
  766   <p class="para">
  767     If pointer points into Region.
  768 
  769   </p>
  770 </div>
  771 <div class="ddoc_params">
  772   <h4>Parameters</h4>
  773   <table cellspacing="0" cellpadding="5" border="0" class="graybox">
  774     <tbody>
  775       <tr class="ddoc_param_row">
  776   <td scope="ddoc_param_id">
  777   <code class="code">
  778     <em class="term">void* <code class="code">p</code></em>
  779   </code>
  780 </td>
  781 <td>
  782   <div class="ddoc_param_desc">
  783     <p class="para">
  784       pointer to check
  785     </p>
  786   </div>
  787 </td>
  788 </tr>
  789 
  790     </tbody>
  791   </table>
  792 </div>
  793 <div class="ddoc_returns">
  794   <h4>Return Value</h4>
  795   <p class="para">
  796     <code class="code">true</code> if it points into the region
  797   </p>
  798 </div>
  799 
  800 </section>
  801 
  802 </div>
  803 
  804 </li><li class="ddoc_member">
  805   <div class="ddoc_member_header">
  806   <div class="ddoc_header_anchor">
  807   <a href="#Region.size" id="Region.size"><code class="code">size</code></a>
  808 </div>
  809 </div><div class="ddoc_decl">
  810   <section class="section">
  811     <div class="declaration">
  812       <h4>Declaration</h4>
  813       <div class="dlang">
  814         <p class="para">
  815           <code class="code">
  816             <span class="ddoc_anchor" id="Region.size"></span>nothrow size_t <code class="code">size</code>();
  817 
  818           </code>
  819         </p>
  820       </div>
  821     </div>
  822   </section>
  823 </div>
  824 <div class="ddoc_decl">
  825   <section class="section ddoc_sections">
  826   <div class="ddoc_returns">
  827   <h4>Return Value</h4>
  828   <p class="para">
  829     <code class="code">size</code> of Region
  830   </p>
  831 </div>
  832 
  833 </section>
  834 
  835 </div>
  836 
  837 </li>
  838 </ul>
  839 
  840 </div>
  841 
  842 </li>
  843 </ul>
  844   </div>
  845 </section>
  846 </section>
  847       </article>
  848     </div>
  849   </body>
  850 </html>