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comparison USBLib/Communication/WinUsb/WinUsbDevice.cs @ 49:7e4dae99f919

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USBLib: fix unhandled exception in WinUSB shutdown after failure to open device
author Ivo Smits <Ivo@UCIS.nl>
date Mon, 19 Aug 2013 16:56:50 +0200
parents 053cc617af54
children abe0d55a2201
comparison
equal deleted inserted replaced
48:f553f6e0a396 49:7e4dae99f919
58 [DllImport(WIN_USB_DLL, SetLastError = true)] 58 [DllImport(WIN_USB_DLL, SetLastError = true)]
59 private static extern bool WinUsb_WritePipe(SafeWinUsbInterfaceHandle InterfaceHandle, byte PipeID, IntPtr pBuffer, int BufferLength, out int LengthTransferred, IntPtr pOVERLAPPED); 59 private static extern bool WinUsb_WritePipe(SafeWinUsbInterfaceHandle InterfaceHandle, byte PipeID, IntPtr pBuffer, int BufferLength, out int LengthTransferred, IntPtr pOVERLAPPED);
60 //[DllImport(WIN_USB_DLL, SetLastError = true)] 60 //[DllImport(WIN_USB_DLL, SetLastError = true)]
61 //private static extern bool WinUsb_SetPipePolicy(SafeWinUsbInterfaceHandle InterfaceHandle, byte PipeID, UInt32 PolicyType, UInt32 ValueLength, ref Byte Value); 61 //private static extern bool WinUsb_SetPipePolicy(SafeWinUsbInterfaceHandle InterfaceHandle, byte PipeID, UInt32 PolicyType, UInt32 ValueLength, ref Byte Value);
62 SafeFileHandle DeviceHandle; 62 SafeFileHandle DeviceHandle;
63 private SafeWinUsbInterfaceHandle[] InterfaceHandles = null; 63 private SafeWinUsbInterfaceHandle[] InterfaceHandles = new SafeWinUsbInterfaceHandle[0];
64 private int[] EndpointToInterfaceIn = new int[0]; 64 private int[] EndpointToInterfaceIn = new int[0];
65 private int[] EndpointToInterfaceOut = new int[0]; 65 private int[] EndpointToInterfaceOut = new int[0];
66 public IUsbDeviceRegistry Registry { get; private set; } 66 public IUsbDeviceRegistry Registry { get; private set; }
67 67
68 public WinUsbDevice(String path, WinUsbRegistry registry) { 68 public WinUsbDevice(String path, WinUsbRegistry registry) {
130 return GetInterfaceHandle(EndpointToInterfaceOut[epidx]); 130 return GetInterfaceHandle(EndpointToInterfaceOut[epidx]);
131 } 131 }
132 } 132 }
133 133
134 public override void Close() { 134 public override void Close() {
135 foreach (SafeWinUsbInterfaceHandle ih in InterfaceHandles) ih.Close(); 135 foreach (SafeWinUsbInterfaceHandle ih in InterfaceHandles) if (ih != null) ih.Close();
136 InterfaceHandles = new SafeWinUsbInterfaceHandle[0]; 136 InterfaceHandles = new SafeWinUsbInterfaceHandle[0];
137 if (DeviceHandle != null) DeviceHandle.Close(); 137 if (DeviceHandle != null) DeviceHandle.Close();
138 } 138 }
139 139
140 public override Byte Configuration { 140 public override Byte Configuration {