.. _program_listing_file_umap_PageDescriptor.hpp:

Program Listing for File PageDescriptor.hpp
===========================================

|exhale_lsh| :ref:`Return to documentation for file <file_umap_PageDescriptor.hpp>` (``umap/PageDescriptor.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   //////////////////////////////////////////////////////////////////////////////
   // Copyright 2017-2020 Lawrence Livermore National Security, LLC and other
   // UMAP Project Developers. See the top-level LICENSE file for details.
   //
   // SPDX-License-Identifier: LGPL-2.1-only
   //////////////////////////////////////////////////////////////////////////////
   #ifndef _UMAP_PageDescriptor_HPP
   #define _UMAP_PageDescriptor_HPP
   
   #include <iostream>
   #include <string>
   
   namespace Umap {
     class RegionDescriptor;
   
     struct PageDescriptor {
       enum State { FREE = 0, FILLING, PRESENT, UPDATING, LEAVING };
       char*             page;
       RegionDescriptor* region;
       State             state;
       bool              dirty;
       bool              deferred;
       bool              data_present;
       int               spurious_count;
   
       std::string print_state( void ) const;
       void set_state_free( void );
       void set_state_filling( void );
       void set_state_updating( void );
       void set_state_present( void );
       void set_state_leaving( void );
     };
   
     std::ostream& operator<<(std::ostream& os, const Umap::PageDescriptor::State st);
     std::ostream& operator<<(std::ostream& os, const Umap::PageDescriptor* pd);
   } // end of namespace Umap
   
   #endif // _UMAP_PageDescriptor_HPP