fc::detail::mmap_struct_base Class Reference

#include <mmap_struct.hpp>

Inheritance diagram for fc::detail::mmap_struct_base:

Public Member Functions
size_t	size () const
void	flush ()

Protected Member Functions
void	open (const fc::path &file, size_t s, bool create)

Protected Attributes
std::unique_ptr< fc::file_mapping >	_file_mapping
std::unique_ptr< fc::mapped_region >	_mapped_region

Detailed Description

Base class used to hide common implementation details.

Definition at line 13 of file mmap_struct.hpp.

Member Function Documentation

flush()

void fc::detail::mmap_struct_base::flush

(

)

Definition at line 14 of file mmap_struct.cpp.

      { 
        _mapped_region->flush();  
      }

open()

void fc::detail::mmap_struct_base::open ( const fc::path & file, size_t s, bool create )

protected

Definition at line 19 of file mmap_struct.cpp.

      {
         if( !fc::exists( file ) || fc::file_size(file) != s )
         {
            std::ofstream out( file.generic_string().c_str() );
            char buffer[1024];
            memset( buffer, 0, sizeof(buffer) );
 
            size_t bytes_left = s;
            while( bytes_left > 0 )
            {
               size_t to_write = std::min<size_t>(bytes_left, sizeof(buffer) );
               out.write( buffer, to_write );
               bytes_left -= to_write;
            }
         }
 
         std::string filePath = file.to_native_ansi_path(); 
 
         _file_mapping.reset( new fc::file_mapping( filePath.c_str(), fc::read_write ) );
         _mapped_region.reset( new fc::mapped_region( *_file_mapping, fc::read_write, 0, s ) );
      }

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size()

size_t fc::detail::mmap_struct_base::size

(

)

const

Definition at line 13 of file mmap_struct.cpp.

{ return _mapped_region->get_size(); }

Member Data Documentation

_file_mapping

std::unique_ptr<fc::file_mapping> fc::detail::mmap_struct_base::_file_mapping

protected

Definition at line 21 of file mmap_struct.hpp.

_mapped_region

std::unique_ptr<fc::mapped_region> fc::detail::mmap_struct_base::_mapped_region

protected

Definition at line 22 of file mmap_struct.hpp.

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The documentation for this class was generated from the following files:

• libraries/fc/include/fc/interprocess/mmap_struct.hpp
• libraries/fc/src/interprocess/mmap_struct.cpp