public static DiskIo OpenFile(string fileName, MemoryPool pool, bool isReadOnly)
{
CustomFileStream fileStream = CustomFileStream.OpenFile(fileName, pool.PageSize, out int fileStructureBlockSize, isReadOnly, true);
DiskMedium disk = DiskMedium.OpenFile(fileStream, pool, fileStructureBlockSize);
return(new DiskIo(disk, isReadOnly));
}
public static DiskIo CreateFile(string fileName, MemoryPool pool, int fileStructureBlockSize, params Guid[] flags)
{
//Exclusive opening to prevent duplicate opening.
CustomFileStream fileStream = CustomFileStream.CreateFile(fileName, pool.PageSize, fileStructureBlockSize);
DiskMedium disk = DiskMedium.CreateFile(fileStream, pool, fileStructureBlockSize, flags);
return(new DiskIo(disk, false));
}
private DiskIo(DiskMedium stream, bool isReadOnly)
{
if (stream == null)
throw new ArgumentNullException("stream");
m_isReadOnly = isReadOnly;
m_blockSize = stream.BlockSize;
m_stream = stream;
}
private DiskIo(DiskMedium stream, bool isReadOnly)
{
if (stream is null)
{
throw new ArgumentNullException("stream");
}
m_isReadOnly = isReadOnly;
m_blockSize = stream.BlockSize;
m_stream = stream;
}
/// <summary>
/// Releases the unmanaged resources used by the <see cref="DiskIo"/> object and optionally releases the managed resources.
/// </summary>
public void Dispose()
{
if (!m_disposed)
{
try
{
if (m_stream != null)
{
m_stream.Dispose();
}
}
finally
{
GC.SuppressFinalize(this);
m_stream = null;
m_disposed = true;
}
}
}
public static DiskIo CreateMemoryFile(MemoryPool pool, int fileStructureBlockSize, params Guid[] flags)
{
DiskMedium disk = DiskMedium.CreateMemoryFile(pool, fileStructureBlockSize, flags);
return(new DiskIo(disk, false));
}
/// <summary>
/// Releases the unmanaged resources used by the <see cref="DiskIo"/> object and optionally releases the managed resources.
/// </summary>
public void Dispose()
{
if (!m_disposed)
{
try
{
if (m_stream != null)
{
m_stream.Dispose();
}
}
finally
{
GC.SuppressFinalize(this);
m_stream = null;
m_disposed = true;
}
}
}