public unsafe void Execute(FileWriteResult target)
{
target.Pin(buffer.Data);
Overlapped overlapped = new Overlapped
{
AsyncResult = target,
OffsetLow = (int)(target.Position & 0xffffffff),
OffsetHigh = (int)((target.Position >> 32) & 0xffffffff)
};
NativeOverlapped *native = overlapped.UnsafePack(null, null);
IntPtr array = Marshal.UnsafeAddrOfPinnedArrayElement(buffer.Data, buffer.Offset);
int read;
int result = FileInterop.WriteFile(handle, array, buffer.Count, out read, native);
uint error = FileInterop.GetLastError();
if (result == 0 && error != 997)
{
target.Fail(error);
}
if (result == 1)
{
target.Complete(native, read);
}
}
public File OpenOrCreate(string path)
{
IntPtr handle = FileInterop.CreateFile(path, 0x80000000 | 0x40000000, 0x01 | 0x02, IntPtr.Zero, 0x04, 0x40000000 | 0x00000080, IntPtr.Zero);
uint error = FileInterop.GetLastError();
worker.Add(handle);
return(new FileInstance(handle, worker));
}
public File Open(string path)
{
IntPtr handle = FileInterop.CreateFile(path, 0x80000000 | 0x40000000, 0x01 | 0x02, IntPtr.Zero, 0x03, 0x40000000 | 0x00000080, IntPtr.Zero);
if (handle == new IntPtr(-1))
{
return(null);
}
worker.Add(handle);
return(new FileInstance(handle, worker));
}
public unsafe void Complete(NativeOverlapped *overlapped, int affected)
{
uint ignore;
uint result = FileInterop.GetOverlappedResult(Handle, overlapped, out ignore, false);
Affected = affected;
IsCompleted = true;
if (result != 0 || affected > 0)
{
Release();
Complete();
}
else
{
Fail();
}
}
public void Fail()
{
Fail(FileInterop.GetLastError());
}
public void Dispose()
{
FileInterop.CloseHandle(handle);
}
public bool Flush()
{
return(FileInterop.FlushFileBuffers(handle));
}
public bool SetLength(long length)
{
return
(FileInterop.SetFilePointerEx(handle, length, IntPtr.Zero, 0x00) &&
FileInterop.SetEndOfFile(handle));
}