public ProtoFile(string fileName, CompletionPorts.CompletionPortSafeHandle completionPort, ConcurrentQueue <IntPtr> overlappedStructs)
{
_overlappedStructs = overlappedStructs;
_fileName = fileName;
_fileHandle = CreateFileW(fileName, FileAccess.GENERIC_READ, System.IO.FileShare.Read,
IntPtr.Zero, System.IO.FileMode.Open, FileFlag.OVERLAPPED, IntPtr.Zero);
if (_fileHandle.IsInvalid)
{
var error = Marshal.GetLastWin32Error();
throw new System.IO.FileLoadException($"Unable to load the file {fileName} with error code {error}");
}
_portHandle = CompletionPorts.CreateIoCompletionPort(_fileHandle.DangerousGetHandle(), completionPort.DangerousGetHandle(),
UIntPtr.Zero, (uint)Environment.ProcessorCount);
if (_portHandle.IsInvalid)
{
var error = Marshal.GetLastWin32Error();
throw new System.IO.FileLoadException($"Unable to map to the completion port for the file {fileName} with error code {error}");
}
}
public AsyncBlockCacheFile(string fileName, int blockCount, FileIdentifier id, AsyncBlockCache cache)
{
_cache = cache;
_blocks = new AsyncBlockManager[blockCount];
_fileName = fileName;
_id = id;
_fileHandle = CreateFileW(fileName, FileAccess.GENERIC_READ, System.IO.FileShare.Read,
IntPtr.Zero, System.IO.FileMode.Open, FileFlag.OVERLAPPED, IntPtr.Zero);
if (_fileHandle.IsInvalid)
{
var error = Marshal.GetLastWin32Error();
throw new System.IO.FileLoadException($"Unable to load the file {fileName} with error code {error}");
}
_cpHandle = CompletionPorts.CreateIoCompletionPort(_fileHandle.DangerousGetHandle(), _cache.CompletionPort.DangerousGetHandle(),
UIntPtr.Zero, (uint)Environment.ProcessorCount);
if (_cpHandle.IsInvalid)
{
var error = Marshal.GetLastWin32Error();
throw new System.IO.FileLoadException($"Unable to map to the completion port for the file {fileName} with error code {error}");
}
}