public bool CloseBus(BusInfo busInfo)
{
lock (this.busInstances)
{
IBus bus = this.TryGetCreatedBus(busInfo);
if (bus == null)
{
return(false);
}
bus.Close();
while (busInfo.Parent != null)
{
bus = this.TryGetCreatedBus(busInfo.Parent);
if (bus == null)
{
break;
}
//该总线被其它设备所占用
if (this.busInstances.Keys.Any(obj => MatchBusWithParent(obj, busInfo)))
{
break;
}
bus.Close();
busInfo = busInfo.Parent;
}
return(true);
}
}
/// <summary>
/// 已重写，比较Type,与UniqueValue是否相同
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public override bool Equals(object obj)
{
BusInfo other = (obj) as BusInfo;
if (other == null)
{
return(false);
}
if (this.Type != other.Type)
{
return(false);
}
if (string.Compare(this.UiqueValue, other.UiqueValue) != 0)
{
return(false);
}
if (string.Compare(this.DriverProvider, other.DriverProvider) != 0)
{
return(false);
}
return(true);
}
public IBus TryGetCreatedBus(BusInfo busInfo)
{
lock (this.busInstances)
{
if (this.busInstances.ContainsKey(busInfo))
{
return(this.busInstances[busInfo]);
}
return(null);
}
}
public int Read(BusInfo busInfo, byte[] readBuf, int maxReadLen = 0)
{
IBus bus = this.CreateBusFromBusInfo(busInfo, true);
try
{
return(bus.Read(readBuf, maxReadLen));
}
finally
{
if (bus != null && bus.State != BusState.Closed && busInfo.CacheResource == false)
{
bus.Close();
}
}
}
public void Write(BusInfo busInfo, byte[] writeBuf, int offset, int len)
{
IBus bus = this.CreateBusFromBusInfo(busInfo, true);
try
{
bus.Write(writeBuf, offset, len);
}
finally
{
if (bus != null && bus.State != BusState.Closed && busInfo.CacheResource == false)
{
bus.Close();
}
}
}
private bool MatchBusWithParent(BusInfo matchListRoot, BusInfo busInfo)
{
if (busInfo == null)
{
throw new ArgumentNullException("busInfo");
}
while (matchListRoot != null)
{
if (matchListRoot.Equals(busInfo))
{
return(true);
}
matchListRoot = matchListRoot.Parent;
}
return(false);
}
public int WriteAndRead(BusInfo busInfo, byte[] writeBuf, int offset, int len, byte[] readBuf, int maxReadLen = 0, int waitTimeBeforeRead = 0)
{
IBus bus = this.CreateBusFromBusInfo(busInfo, true);
try
{
bus.Write(writeBuf, offset, len);
if (waitTimeBeforeRead > 0)
{
Thread.Sleep(waitTimeBeforeRead);
}
return(bus.Read(readBuf, maxReadLen));
}
finally
{
if (bus != null && bus.State != BusState.Closed && busInfo.CacheResource == false)
{
bus.Close();
}
}
}
public void Open(BusInfo busInfo)
{
lock (this.busLock)
{
try
{
this.Info = busInfo;
if (this.State != BusState.Closed && this.State != BusState.Error && this.State != BusState.Created)
{
throw new Exception(string.Format("Bus:{0} is {1} could not open", busInfo.ReadableValue, this.State));
}
this.State = BusState.Opening;
this.OpenImplement(busInfo);
this.State = BusState.Opened;
}
catch
{
this.State = BusState.Error;
this.Info = null;
throw;
}
}
}
public IBus CreateBusFromBusInfo(BusInfo busInfo, bool callOpen = false)
{
lock (this.busInstances)
{
IBus bus = null;
if (this.busInstances.ContainsKey(busInfo))
{
bus = this.busInstances[busInfo];
}
else
{
Assembly assembly = Assembly.Load(busInfo.AssemblyName);
Type t = assembly.GetType(busInfo.ClassFullName);
bus = Activator.CreateInstance(t) as IBus;
this.OnBusCreated(new BusEventArgs(bus));
}
if ((bus.State == BusState.Closed || bus.State == BusState.Created) && callOpen == true)
{
bus.Open(busInfo);
}
this.busInstances[busInfo] = bus;
return(bus);
}
}
protected abstract void OpenImplement(BusInfo busInfo);
public T CreateBusFromBusInfo <T>(BusInfo busInfo, bool callOpen = false) where T : IBus
{
return((T)CreateBusFromBusInfo(busInfo, callOpen));
}
