ACE/examples/APG/Shared_Memory/Mem_Map.cpp

   1 #include "ace/OS_NS_fcntl.h"
   2 #include "ace/OS_NS_string.h"
   3 #include "ace/Mem_Map.h"
   4 #include "ace/Log_Msg.h"
   5
   6 // Listing 1 code/ch17
   7 int ACE_TMAIN (int, ACE_TCHAR *argv[])
   8 {
   9   ACE_HANDLE srcHandle = ACE_OS::open (argv[1], O_RDONLY);
  10   ACE_ASSERT(srcHandle != ACE_INVALID_HANDLE);
  11
  12   ACE_Mem_Map srcMap (srcHandle, static_cast<size_t> (-1), PROT_READ, ACE_MAP_PRIVATE);
  13   ACE_ASSERT(srcMap.addr () != 0);
  14
  15   ACE_Mem_Map destMap (argv[2],
  16                        srcMap.size (),
  17                        O_RDWR | O_CREAT,
  18                        ACE_DEFAULT_FILE_PERMS,
  19                        PROT_RDWR,
  20                        ACE_MAP_SHARED);
  21   ACE_ASSERT(destMap.addr () != 0);
  22
  23   ACE_OS::memcpy (destMap.addr (),
  24                   srcMap.addr (),
  25                   srcMap.size ());
  26   destMap.sync ();
  27
  28   srcMap.close ();
  29   destMap.close ();
  30   return 0;
  31 }
  32 // Listing 1
  33