void* FileMap::Initialize(const std::string& p_name, const size_t& p_fileMapSize)
{
m_name = p_name;
m_fileMapSize = p_fileMapSize;
bool success;
success = OpenFileMap();
if(!success)
{
// TODORT LOG
// TODOLOG
return nullptr;
}
success = MapFileMapIntoMemory();
if(!success)
{
// TODORT LOG
// TODOLOG
return nullptr;
}
return m_rawMemoryOfMappedFile;
}
bool ShareMemory::Open(unsigned long dwAccess)
{
#ifdef WIN32
if (NULL == m_hFileMap) m_hFileMap = OpenFileMapping( dwAccess, TRUE, m_shareName.c_str() );
if (NULL == m_hFileMap)
{
return false;
}
m_lpFileMapBuffer = MapViewOfFile(m_hFileMap, dwAccess, 0, 0, 0);
if ( NULL == m_lpFileMapBuffer )
{
Close();
return false;
}
MEMORY_BASIC_INFORMATION buffer;
int nRet = VirtualQuery( m_lpFileMapBuffer, &buffer, sizeof(buffer));
if (0 == nRet)
{
Close();
return false;
}
m_dwSize = buffer.RegionSize;
#else
if ( "" != m_mapFilePath ) return OpenFileMap();
if ( -1 == m_digName )
{
if ( "" == m_shareName ) return false;
m_digName = atoi( m_shareName.c_str() );
if ( 0 >= m_digName ) return false;
}
m_shmid = shmget( m_digName, 0, 0666 );
if ( -1 == m_shmid ) return false;
m_lpFileMapBuffer = shmat( m_shmid, 0, 0 );
shmctl( m_shmid, IPC_STAT, &m_ds );
m_dwSize = m_ds.shm_segsz;
#endif
return true;
}
