private static unsafe void ThreadFunc()
{
try
{
int size = 65536;
bool createdMain = false;
var hFile = WinAPI.OpenFileMapping(
WinAPI.FileMapAccess.FileMapAllAccess,
false,
"ulHelper_fm");
if (hFile == IntPtr.Zero)
{
hFile = WinAPI.CreateFileMapping(
new IntPtr(-1),
IntPtr.Zero,
WinAPI.FileMapProtection.PageReadWrite,
(uint)0, (uint)size,
"ulHelper_fm");
createdMain = true;
}
var lpBaseAddress = WinAPI.MapViewOfFile(
hFile,
WinAPI.FileMapAccess.FileMapAllAccess,
0, 0, 0);
Mutex = new Mutex(false, "ulHelper_mutex");
Stream = new UnmanagedMemoryStream((byte*)lpBaseAddress.ToPointer(), size, size, FileAccess.ReadWrite);
eventWH = new EventWaitHandle(false, EventResetMode.AutoReset, "ulHelper_event");
int accCount;
byte[] buf = new byte[size];
if (createdMain)
{
Mutex.WaitOne();
try
{
buf[0] = buf[1] = buf[2] = buf[3] = 0;
Stream.Position = 0;
Stream.Write(buf, 0, 4);
}
finally
{
Mutex.ReleaseMutex();
}
}
eventWH.Set();
while (true)
{
eventWH.WaitOne();
if (MainForm.NeedTerminate)
break;
Mutex.WaitOne();
try
{
Stream.Position = 0;
accCount = Stream.ReadByte();
lock (Accounts.List)
if (Accounts.List.Count != accCount)
{
foreach (var acc in Accounts.List)
acc.Active = false;
for (int i = 0; i < accCount; i++)
{
string accountName = "";
int index = 0;
Stream.Position = 8 + i * 128;
Stream.Read(buf, 0, 128);
while (buf[index] != 0)
accountName += (char)buf[index++];
if (!Accounts.List.Any(acc => acc.Name == accountName))
{
var accData = new AccountData(accountName);
Accounts.List.Add(accData);
}
Accounts.List.First(acc => acc.Name == accountName).Active = true;
}
PerformNewAccount();
}
}
finally
{
Mutex.ReleaseMutex();
}
}
WinAPI.UnmapViewOfFile(lpBaseAddress);
WinAPI.CloseHandle(hFile);
}
catch (ThreadAbortException)
{
throw;
}
catch (Exception ex)
{
var f = new ExceptionForm(ex);
f.ShowDialog();
}
}
public override int ReadByte()
{
return(_unmanagedStream.ReadByte());
}
public void WriteByte ()
{
UnmanagedMemoryStream ums = new
UnmanagedMemoryStream(mem_byteptr, 3, 5, FileAccess.ReadWrite);
ums.WriteByte (testStreamData [0]);
Assert.AreEqual (5, ums.Capacity, "#A1");
Assert.AreEqual (1, ums.Position, "#A2");
Assert.AreEqual (3, ums.Length, "#A3");
ums.WriteByte (testStreamData [1]);
Assert.AreEqual (5, ums.Capacity, "#B1");
Assert.AreEqual (2, ums.Position, "#B2");
Assert.AreEqual (3, ums.Length, "#B3");
ums.WriteByte (testStreamData [2]);
Assert.AreEqual (5, ums.Capacity, "#C1");
Assert.AreEqual (3, ums.Position, "#C2");
Assert.AreEqual (3, ums.Length, "#C3");
ums.WriteByte (testStreamData [3]);
Assert.AreEqual (5, ums.Capacity, "#D1");
Assert.AreEqual (4, ums.Position, "#D2");
Assert.AreEqual (4, ums.Length, "#D3");
ums.WriteByte (testStreamData [4]);
Assert.AreEqual (5, ums.Capacity, "#E1");
Assert.AreEqual (5, ums.Position, "#E2");
Assert.AreEqual (5, ums.Length, "#E3");
ums.Seek (0, SeekOrigin.Begin);
Assert.AreEqual (testStreamData [0], ums.ReadByte (), "#F1");
Assert.AreEqual (testStreamData [1], ums.ReadByte (), "#F2");
Assert.AreEqual (testStreamData [2], ums.ReadByte (), "#F3");
Assert.AreEqual (testStreamData [3], ums.ReadByte (), "#F4");
Assert.AreEqual (testStreamData [4], ums.ReadByte (), "#F5");
ums.Close ();
}
private Bitmap fetchImage(UnmanagedMemoryStream memStream)
{
int buffer;
string id ="";
int width;
int height;
int max;
byte[] rgbValues = null;
Bitmap bitmap;
do
{
buffer = memStream.ReadByte();
id += (char)buffer;
} while (buffer != '\n' && buffer != ' ');
string dimension = "";
do
{
buffer = memStream.ReadByte();
dimension += (char)buffer;
} while (buffer != '\n' && buffer != ' ');
width = Convert.ToInt16(dimension);
dimension = "";
do
{
buffer = memStream.ReadByte();
dimension += (char)buffer;
} while (buffer != '\n' && buffer != ' ');
height = Convert.ToInt16(dimension);
string maxRGB = "";
do
{
buffer = memStream.ReadByte();
maxRGB += (char)buffer;
} while (buffer != '\n' && buffer != ' ');
max = Convert.ToInt16(maxRGB);
rgbValues = new byte[height * width * 3];
for (int i = 0; i < rgbValues.Length; i++)
{
rgbValues[i] = (byte)memStream.ReadByte();
}
memStream.Close();
try
{
bitmap = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Rectangle rect = new Rectangle(0, 0, width, height);
System.Drawing.Imaging.BitmapData bmpData = bitmap.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, bitmap.PixelFormat);
IntPtr ptr = bmpData.Scan0;
byte[] bgrValues = new byte[rgbValues.Length];
for (int i = 0; i < rgbValues.Length; i += 3)
{
bgrValues[i] = rgbValues[i + 2];
bgrValues[i + 1] = rgbValues[i + 1];
bgrValues[i + 2] = rgbValues[i];
}
System.Runtime.InteropServices.Marshal.Copy(bgrValues, 0, ptr, bgrValues.Length);
bitmap.UnlockBits(bmpData);
return bitmap;
}
catch (Exception ex)
{
Console.WriteLine("Error creating new bitmap: " + ex.ToString());
}
return null;
}
public void Seek_Current_Overflow ()
{
using (UnmanagedMemoryStream ums = new UnmanagedMemoryStream (mem_byteptr, 5, 10, FileAccess.Read)) {
ums.ReadByte ();
try {
ums.Seek (Int64.MaxValue, SeekOrigin.Current);
Assert.Fail ("#1");
}
catch (IOException ex) {
Assert.AreEqual (typeof (IOException), ex.GetType (), "#2");
Assert.IsNull (ex.InnerException, "#3");
Assert.IsNotNull (ex.Message, "#4");
}
}
}
public void Write ()
{
UnmanagedMemoryStream ums = new
UnmanagedMemoryStream(mem_byteptr, length, capacity, FileAccess.ReadWrite);
ums.Write (testStreamData, 0, length);
Assert.AreEqual (capacity, ums.Capacity, "#A1");
Assert.AreEqual (length, ums.Position, "#A2");
Assert.AreEqual (length, ums.Length, "#A3");
ums.Position = 0;
ums.Read (readData, 0, length);
Assert.AreEqual (capacity, ums.Capacity, "#B1");
Assert.AreEqual (length, ums.Position, "#B2");
Assert.AreEqual (length, ums.Length, "#B3");
VerifyTestData ("#B4", readData, 0, length);
ums.Write (testStreamData, 2, 2);
Assert.AreEqual (capacity, ums.Capacity, "#C1");
Assert.AreEqual (length + 2, ums.Position, "#C1");
Assert.AreEqual (length + 2, ums.Length, "#C2");
ums.Position = length;
Assert.AreEqual (testStreamData [2], ums.ReadByte (), "#D1");
Assert.AreEqual (testStreamData [3], ums.ReadByte (), "#D2");
ums.Close();
}
public void ReadByte_WriteOnly ()
{
UnmanagedMemoryStream ums = new
UnmanagedMemoryStream(mem_byteptr, length, capacity, FileAccess.Write);
try {
ums.ReadByte ();
Assert.Fail ("#1");
} catch (NotSupportedException ex) {
// Stream does not support reading
Assert.AreEqual (typeof (NotSupportedException), ex.GetType (), "#2");
Assert.IsNull (ex.InnerException, "#3");
Assert.IsNotNull (ex.Message, "#4");
}
ums.Close();
}
public void ReadByte_EndOfStream ()
{
UnmanagedMemoryStream ums = new
UnmanagedMemoryStream(mem_byteptr, length, capacity, FileAccess.ReadWrite);
ums.Write (testStreamData, 0, testStreamData.Length);
ums.Position = 0;
ums.Seek(length, SeekOrigin.Begin);
Assert.AreEqual (-1, ums.ReadByte (), "#3");
ums.Seek(length + 1, SeekOrigin.Begin);
Assert.AreEqual (-1, ums.ReadByte (), "#4");
ums.Seek(capacity, SeekOrigin.Begin);
Assert.AreEqual (-1, ums.ReadByte (), "#5");
ums.Seek(capacity + 1, SeekOrigin.Begin);
Assert.AreEqual (-1, ums.ReadByte (), "#6");
ums.Close();
}
public void ReadByte_Stream_Closed ()
{
UnmanagedMemoryStream ums = new
UnmanagedMemoryStream(mem_byteptr, length);
ums.Close();
ums.ReadByte();
}
public void ReadByte ()
{
UnmanagedMemoryStream ums = new
UnmanagedMemoryStream(mem_byteptr, length, length, FileAccess.ReadWrite);
ums.Write (testStreamData, 0, testStreamData.Length);
ums.Position = 0;
Assert.AreEqual (testStreamData [0], ums.ReadByte (), "#1");
Assert.AreEqual (testStreamData [1], ums.ReadByte (), "#2");
ums.Close();
}
public void PositionPointer_Set ()
{
byte [] n = new byte [8];
n [4] = 65;
fixed (byte* p = n) {
UnmanagedMemoryStream m = new UnmanagedMemoryStream (p, 8, 8, FileAccess.ReadWrite);
m.PositionPointer = p + 4;
Assert.AreEqual (65, m.ReadByte (), "read");
m.WriteByte (42);
}
Assert.AreEqual (42, n [5], "write");
}
