public FKNative()
{
m_OutBuffer = Marshal.AllocHGlobal((int)OUT_BUFFER_SIZE);
m_InBuffer = Marshal.AllocHGlobal((int)IN_BUFFER_SIZE);
m_DevIOCTL = new FKDeviceIOCTL(FKUsbTracerPath, false);
m_TraceBufferThread = new Thread(Func_TraceBufReadThread);
}
// 新的TraceReader线程
private void Func_TraceBufReadThread()
{
try
{
FKDeviceIOCTL devIO = new FKDeviceIOCTL(FKUsbTracerPath, true);
while (true)
{
uint bytesReturned;
// 向驱动发送 跟踪信息 的请求
bool result = devIO.DeviceIoControl(FKDeviceIOCTL.IOCTL_FKUSBTRACER_GET_BUFFER, IntPtr.Zero,
0, m_OutBuffer, OUT_BUFFER_SIZE, out bytesReturned);
if (!result)
{
int err = Marshal.GetLastWin32Error();
// 检查I/O状态
if (err == ERROR_IO_PENDING)
{
while (true)
{
// 检查 I/O 请求是否被填充( 500ms 后要退出一次，不然线程死锁无法杀掉了 )
if (devIO.WaitForOverlappedIo(500, out bytesReturned))
{
result = true;
break;
}
}
}
else
{
System.Diagnostics.Debug.WriteLine(err);
}
}
if (result)
{
// 收到数据了，我们回调通知
if (FilterTraceArrived != null)
{
FilterTraceArrived(this,
new FKFilterTraceArrivedEventArgs(GetTraceList(m_OutBuffer, OUT_BUFFER_SIZE, bytesReturned)));
}
// 休眠，让出时间给主线程更新下UI
Thread.Sleep(10);
}
}
}
catch (ThreadAbortException)
{
// 在本线程退出前，必须关闭当前pending状态的 IO
m_DevIOCTL.CancelIo();
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
}
