ceph/src/boost/libs/interprocess/test/xsi_shared_memory_mapping_test.cpp

   1 //////////////////////////////////////////////////////////////////////////////
   2 //
   3 // (C) Copyright Ion Gaztanaga 2004-2012. Distributed under the Boost
   4 // Software License, Version 1.0. (See accompanying file
   5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7 // See http://www.boost.org/libs/interprocess for documentation.
   8 //
   9 //////////////////////////////////////////////////////////////////////////////
  10
  11 #include <boost/interprocess/detail/workaround.hpp>
  12
  13 #if defined(BOOST_INTERPROCESS_XSI_SHARED_MEMORY_OBJECTS)
  14
  15 #include <fstream>
  16 #include <iostream>
  17 #include <boost/interprocess/xsi_shared_memory.hpp>
  18 #include <boost/interprocess/mapped_region.hpp>
  19 #include <boost/interprocess/file_mapping.hpp>
  20 #include <boost/interprocess/detail/file_wrapper.hpp>
  21 #include <string>
  22 #include <iostream>
  23 #include "get_process_id_name.hpp"
  24
  25 using namespace boost::interprocess;
  26
  27 void remove_shared_memory(const xsi_key &key)
  28 {
  29    BOOST_TRY{
  30       xsi_shared_memory xsi(open_only, key);
  31       xsi_shared_memory::remove(xsi.get_shmid());
  32    }
  33    BOOST_CATCH(interprocess_exception &e){
  34       if(e.get_error_code() != not_found_error)
  35          BOOST_RETHROW
  36    } BOOST_CATCH_END
  37 }
  38
  39 class xsi_shared_memory_remover
  40 {
  41    public:
  42    xsi_shared_memory_remover(xsi_shared_memory &xsi_shm)
  43       : xsi_shm_(xsi_shm)
  44    {}
  45
  46    ~xsi_shared_memory_remover()
  47    {  xsi_shared_memory::remove(xsi_shm_.get_shmid());  }
  48    private:
  49    xsi_shared_memory & xsi_shm_;
  50 };
  51
  52 int main ()
  53 {
  54    std::string filename(get_filename());
  55    const char *names[2] = { filename.c_str(), 0 };
  56
  57    file_mapping::remove(names[0]);
  58    {  ipcdetail::file_wrapper(create_only, names[0], read_write); }
  59    xsi_key key(names[0], 1);
  60    file_mapping::remove(names[0]);
  61    remove_shared_memory(key);
  62
  63    unsigned int i;
  64    BOOST_TRY{
  65       for(i = 0; i < sizeof(names)/sizeof(names[0]); ++i)
  66       {
  67          const std::size_t FileSize = 99999*2;
  68          //Create a file mapping
  69          xsi_shared_memory mapping (create_only, names[i] ? key : xsi_key(), FileSize);
  70          xsi_shared_memory_remover rem(mapping);
  71          BOOST_TRY{
  72             {
  73                //Partial mapping should fail fox XSI shared memory
  74                bool thrown = false;
  75                BOOST_TRY{
  76                   mapped_region region2(mapping, read_write, FileSize/2, FileSize - FileSize/2, 0);
  77                }
  78                BOOST_CATCH(...){
  79                   thrown = true;
  80                } BOOST_CATCH_END
  81                if(thrown == false){
  82                   return 1;
  83                }
  84                //Create a mapped region
  85                mapped_region region (mapping, read_write, 0, FileSize, 0);
  86
  87                //Fill two regions with a pattern
  88                unsigned char *filler = static_cast<unsigned char*>(region.get_address());
  89                for(std::size_t i = 0; i < FileSize; ++i){
  90                   *filler++ = static_cast<unsigned char>(i);
  91                }
  92             }
  93
  94             //Now check the pattern mapping a single read only mapped_region
  95             {
  96                //Create a single region, mapping all the file
  97                mapped_region region (mapping, read_only);
  98
  99                //Check pattern
 100                unsigned char *pattern = static_cast<unsigned char*>(region.get_address());
 101                for(std::size_t i = 0; i < FileSize; ++i, ++pattern){
 102                   if(*pattern != static_cast<unsigned char>(i)){
 103                      return 1;
 104                   }
 105                }
 106             }
 107          }
 108          BOOST_CATCH(std::exception &exc){
 109             std::cout << "Unhandled exception: " << exc.what() << std::endl;
 110             return 1;
 111          } BOOST_CATCH_END
 112       }
 113    }
 114    BOOST_CATCH(std::exception &exc){
 115       std::cout << "Unhandled exception: " << exc.what() << std::endl;
 116       return 1;
 117    } BOOST_CATCH_END
 118    return 0;
 119 }
 120
 121 #else
 122
 123 int main()
 124 {
 125    return 0;
 126 }
 127
 128 #endif   //BOOST_INTERPROCESS_XSI_SHARED_MEMORY_OBJECTS