public MMFServer()
{
MMF_SEND_OFFSET = 0;
MMF_SEND_SIZE = sizeof(int) + Marshal.SizeOf(typeof(MMFServerBlock));
MMF_RECEIVE_OFFSET = MMF_SEND_SIZE;
MMF_RECEIVE_SIZE = sizeof(int) + Marshal.SizeOf(typeof(MMFClientBlock));
MMF_CAPACITY_SIZE = MMF_RECEIVE_SIZE + MMF_SEND_SIZE;
_mmf = MemoryMappedFile.CreateOrOpen(MMFDefine.MAP_NAME, MMF_CAPACITY_SIZE, MemoryMappedFileAccess.ReadWrite);
this.ServerBlock = new MMFServerBlock();
this.ClientBlock = new MMFClientBlock();
_mutex = new Mutex(false, MMFDefine.MUTEX_NAME);
ModulesFactory.FlowControlHelper.GetFlowControl("MMF").AddFlowBase(new FlowBase("MMF_Blinding", FlowAction));
}
private void Blinding()
{
if (_mutex.WaitOne(new TimeSpan(100)))
{
try
{
using (MemoryMappedViewStream streamReader = _mmf.CreateViewStream(MMF_RECEIVE_OFFSET, MMF_RECEIVE_SIZE))
{
using (BinaryReader reader = new BinaryReader(streamReader))
{
int len = reader.ReadInt32();
if (len > 0)
{
if (len != (MMF_RECEIVE_SIZE - sizeof(int)))
{
throw new Exception("接收結構大小與MMF分配容量不符");
}
this.ServerBlock = (MMFServerBlock)MarshalEx.BytesToStuct(reader.ReadBytes(len), typeof(MMFServerBlock));
}
}
}
using (MemoryMappedViewStream streamWriter = _mmf.CreateViewStream(MMF_SEND_OFFSET, MMF_SEND_SIZE))
{
using (BinaryWriter writer = new BinaryWriter(streamWriter))
{
byte[] data = MarshalEx.StructToBytes(this.ClientBlock);
if (data.Length > (MMF_SEND_SIZE - sizeof(int)))
{
throw new Exception("傳送結構大小大於MMF分配容量");
}
writer.Write(data.Length);
writer.Write(data);
}
}
}
catch (Exception ex)
{
OnErrorRaised(ex);
}
finally
{
_mutex.ReleaseMutex();
}
}
}