IndexOutOfRangeException - 无法使用 PInvoke 查看调用堆栈

我正在开发一个从串行端口获取数据的 C# 应用程序，然后它使用一个C++项目（我无法更改）来计算读取的数据。

C++项目使用一些本机 C 代码，这些代码将在计算数据时调用 C# 函数。

以下是使用 PInvoke 调用 C++ 函数的调用 C# 代码的一些示例：

    [DllImport("MyLib.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
    public static extern void PacketHandler_HandlePacket(IntPtr packetHandler, IntPtr packet, int packetType);
    [SuppressUnmanagedCodeSecurity]
    [DllImport("MyLib.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)]
    private static extern float DeviceManager_AddSampleToBattery(IntPtr self, float sample, double sampleRate);
    [SuppressUnmanagedCodeSecurity]
    [DllImport("MyLib.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)]
    private static extern double DeviceManager_GetTimestamp(IntPtr self, int packetType);
    [DllImport("MyLib.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)]
    private static extern void PacketHandler_AddCallbackBattery(IntPtr self, Delegate @delegate);

然后，C++代码：

extern "C"
{
    __declspec(dllexport) void _cdecl PacketHandler_HandlePacket(int * packetHandler, char * packet, int packetType){
        PacketHandler_handlePacket((PacketHandlerStruct *)packetHandler, packet, (PacketHandlerPacketType)packetType);}
}

这个 C 函数

调用我设置的 C# 函数如下：

__declspec(dllexport) void _cdecl  PacketHandler_AddCallbackBattery(int * packetHandler, void(*f)(void * obj, unsigned short int sample)){
    PacketHandlerStruct * myPointer = ((PacketHandlerStruct *)packetHandler);
    myPointer->delegate.addSampleToBattery = f;
}

最后，C 代码将调用"addSampleToBattery"函数，即这个 C# 回调（其中前两个是 PInvoke 调用，就像我发布的第一个调用一样）

private static float CallbackBattery(IntPtr self, ushort sample)
    {
        var value = DeviceManager_AddSampleToBattery(DeviceManager, sample, Const.BaseBvpSampleRate);
        var timestamp = DeviceManager_GetTimestamp(DeviceManager, (int)PacketHandlerPacketType.Battery);
        SocketManager.OnNewBatteryArrived(value, timestamp);
        return value;
    }

其他细节：

C# 委托声明如下：

 [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 private delegate float DelegateBattery(IntPtr self, short sample);
 private static readonly DelegateBattery DelegateCallbackBattery = CallbackBattery;

并设置如下：

var intptrDelegate = Marshal.GetFunctionPointerForDelegate(DelegateCallbackBattery);
var a = Marshal.GetDelegateForFunctionPointer(intptrDelegate, typeof(DelegateBattery));
PacketHandler_AddCallbackBattery(packetHandler, a);

所以，一切似乎都正常，但很多时候会出现 IndexOutOfRangeException。主要问题是，即使在加载了所有符号的调试模式下，我也看不到引发异常的行，因为只有反汇编视图可用，当然我无法从中获得有意义的信息。

Unhandled Exception: 'MyProgram.exe' (Win32): 
The program '[3000] MyProgram.exe' has exited with code 0 (0x0).
 System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at System.Threading.ThreadPoolWorkQueue.Dequeue(ThreadPoolWorkQueueThreadLocals tl, IThreadPoolWorkItem& callback, Boolean& missedSteal)
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()

谢谢！